2874 lines
111 KiB
C
2874 lines
111 KiB
C
/*
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* Copyright (c) 2016-2020, Yann Collet, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under both the BSD-style license (found in the
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* LICENSE file in the root directory of this source tree) and the GPLv2 (found
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* in the COPYING file in the root directory of this source tree).
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* You may select, at your option, one of the above-listed licenses.
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*/
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/* *************************************
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* Compiler Options
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***************************************/
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#ifdef _MSC_VER /* Visual */
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# pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */
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# pragma warning(disable : 4204) /* non-constant aggregate initializer */
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#endif
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#if defined(__MINGW32__) && !defined(_POSIX_SOURCE)
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# define _POSIX_SOURCE 1 /* disable %llu warnings with MinGW on Windows */
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#endif
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/*-*************************************
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* Includes
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***************************************/
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#include "platform.h" /* Large Files support, SET_BINARY_MODE */
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#include "util.h" /* UTIL_getFileSize, UTIL_isRegularFile, UTIL_isSameFile */
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#include <stdio.h> /* fprintf, fopen, fread, _fileno, stdin, stdout */
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#include <stdlib.h> /* malloc, free */
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#include <string.h> /* strcmp, strlen */
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#include <assert.h>
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#include <errno.h> /* errno */
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#include <limits.h> /* INT_MAX */
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#include <signal.h>
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#include "timefn.h" /* UTIL_getTime, UTIL_clockSpanMicro */
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#if defined (_MSC_VER)
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# include <sys/stat.h>
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# include <io.h>
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#endif
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#include "../lib/common/mem.h" /* U32, U64 */
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#include "fileio.h"
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#define ZSTD_STATIC_LINKING_ONLY /* ZSTD_magicNumber, ZSTD_frameHeaderSize_max */
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#include "../lib/zstd.h"
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#include "../lib/common/zstd_errors.h" /* ZSTD_error_frameParameter_windowTooLarge */
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#include "../lib/compress/zstd_compress_internal.h"
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#if defined(ZSTD_GZCOMPRESS) || defined(ZSTD_GZDECOMPRESS)
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# include <zlib.h>
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# if !defined(z_const)
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# define z_const
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# endif
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#endif
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#if defined(ZSTD_LZMACOMPRESS) || defined(ZSTD_LZMADECOMPRESS)
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# include <lzma.h>
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#endif
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#define LZ4_MAGICNUMBER 0x184D2204
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#if defined(ZSTD_LZ4COMPRESS) || defined(ZSTD_LZ4DECOMPRESS)
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# define LZ4F_ENABLE_OBSOLETE_ENUMS
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# include <lz4frame.h>
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# include <lz4.h>
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#endif
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/*-*************************************
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* Constants
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***************************************/
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#define ADAPT_WINDOWLOG_DEFAULT 23 /* 8 MB */
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#define DICTSIZE_MAX (32 MB) /* protection against large input (attack scenario) */
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#define FNSPACE 30
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/*-*************************************
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* Macros
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***************************************/
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struct FIO_display_prefs_s {
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int displayLevel; /* 0 : no display; 1: errors; 2: + result + interaction + warnings; 3: + progression; 4: + information */
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U32 noProgress;
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};
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static FIO_display_prefs_t g_display_prefs = {2, 0};
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#define DISPLAY(...) fprintf(stderr, __VA_ARGS__)
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#define DISPLAYOUT(...) fprintf(stdout, __VA_ARGS__)
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#define DISPLAYLEVEL(l, ...) { if (g_display_prefs.displayLevel>=l) { DISPLAY(__VA_ARGS__); } }
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static const U64 g_refreshRate = SEC_TO_MICRO / 6;
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static UTIL_time_t g_displayClock = UTIL_TIME_INITIALIZER;
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#define READY_FOR_UPDATE() (!g_display_prefs.noProgress && UTIL_clockSpanMicro(g_displayClock) > g_refreshRate)
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#define DELAY_NEXT_UPDATE() { g_displayClock = UTIL_getTime(); }
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#define DISPLAYUPDATE(l, ...) { \
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if (g_display_prefs.displayLevel>=l && !g_display_prefs.noProgress) { \
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if (READY_FOR_UPDATE() || (g_display_prefs.displayLevel>=4)) { \
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DELAY_NEXT_UPDATE(); \
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DISPLAY(__VA_ARGS__); \
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if (g_display_prefs.displayLevel>=4) fflush(stderr); \
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} } }
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#undef MIN /* in case it would be already defined */
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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#define EXM_THROW(error, ...) \
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{ \
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DISPLAYLEVEL(1, "zstd: "); \
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DISPLAYLEVEL(5, "Error defined at %s, line %i : \n", __FILE__, __LINE__); \
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DISPLAYLEVEL(1, "error %i : ", error); \
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DISPLAYLEVEL(1, __VA_ARGS__); \
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DISPLAYLEVEL(1, " \n"); \
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exit(error); \
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}
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#define CHECK_V(v, f) \
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v = f; \
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if (ZSTD_isError(v)) { \
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DISPLAYLEVEL(5, "%s \n", #f); \
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EXM_THROW(11, "%s", ZSTD_getErrorName(v)); \
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}
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#define CHECK(f) { size_t err; CHECK_V(err, f); }
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/*-************************************
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* Signal (Ctrl-C trapping)
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**************************************/
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static const char* g_artefact = NULL;
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static void INThandler(int sig)
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{
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assert(sig==SIGINT); (void)sig;
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#if !defined(_MSC_VER)
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signal(sig, SIG_IGN); /* this invocation generates a buggy warning in Visual Studio */
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#endif
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if (g_artefact) {
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assert(UTIL_isRegularFile(g_artefact));
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remove(g_artefact);
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}
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DISPLAY("\n");
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exit(2);
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}
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static void addHandler(char const* dstFileName)
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{
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if (UTIL_isRegularFile(dstFileName)) {
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g_artefact = dstFileName;
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signal(SIGINT, INThandler);
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} else {
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g_artefact = NULL;
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}
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}
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/* Idempotent */
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static void clearHandler(void)
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{
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if (g_artefact) signal(SIGINT, SIG_DFL);
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g_artefact = NULL;
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}
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/*-*********************************************************
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* Termination signal trapping (Print debug stack trace)
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***********************************************************/
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#if defined(__has_feature) && !defined(BACKTRACE_ENABLE) /* Clang compiler */
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# if (__has_feature(address_sanitizer))
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# define BACKTRACE_ENABLE 0
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# endif /* __has_feature(address_sanitizer) */
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#elif defined(__SANITIZE_ADDRESS__) && !defined(BACKTRACE_ENABLE) /* GCC compiler */
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# define BACKTRACE_ENABLE 0
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#endif
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#if !defined(BACKTRACE_ENABLE)
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/* automatic detector : backtrace enabled by default on linux+glibc and osx */
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# if (defined(__linux__) && (defined(__GLIBC__) && !defined(__UCLIBC__))) \
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|| (defined(__APPLE__) && defined(__MACH__))
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# define BACKTRACE_ENABLE 1
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# else
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# define BACKTRACE_ENABLE 0
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# endif
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#endif
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/* note : after this point, BACKTRACE_ENABLE is necessarily defined */
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#if BACKTRACE_ENABLE
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#include <execinfo.h> /* backtrace, backtrace_symbols */
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#define MAX_STACK_FRAMES 50
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static void ABRThandler(int sig) {
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const char* name;
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void* addrlist[MAX_STACK_FRAMES];
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char** symbollist;
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int addrlen, i;
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switch (sig) {
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case SIGABRT: name = "SIGABRT"; break;
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case SIGFPE: name = "SIGFPE"; break;
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case SIGILL: name = "SIGILL"; break;
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case SIGINT: name = "SIGINT"; break;
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case SIGSEGV: name = "SIGSEGV"; break;
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default: name = "UNKNOWN";
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}
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DISPLAY("Caught %s signal, printing stack:\n", name);
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/* Retrieve current stack addresses. */
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addrlen = backtrace(addrlist, MAX_STACK_FRAMES);
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if (addrlen == 0) {
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DISPLAY("\n");
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return;
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}
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/* Create readable strings to each frame. */
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symbollist = backtrace_symbols(addrlist, addrlen);
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/* Print the stack trace, excluding calls handling the signal. */
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for (i = ZSTD_START_SYMBOLLIST_FRAME; i < addrlen; i++) {
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DISPLAY("%s\n", symbollist[i]);
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}
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free(symbollist);
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/* Reset and raise the signal so default handler runs. */
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signal(sig, SIG_DFL);
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raise(sig);
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}
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#endif
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void FIO_addAbortHandler()
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{
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#if BACKTRACE_ENABLE
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signal(SIGABRT, ABRThandler);
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signal(SIGFPE, ABRThandler);
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signal(SIGILL, ABRThandler);
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signal(SIGSEGV, ABRThandler);
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signal(SIGBUS, ABRThandler);
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#endif
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}
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/*-************************************************************
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* Avoid fseek()'s 2GiB barrier with MSVC, macOS, *BSD, MinGW
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***************************************************************/
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#if defined(_MSC_VER) && _MSC_VER >= 1400
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# define LONG_SEEK _fseeki64
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# define LONG_TELL _ftelli64
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#elif !defined(__64BIT__) && (PLATFORM_POSIX_VERSION >= 200112L) /* No point defining Large file for 64 bit */
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# define LONG_SEEK fseeko
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# define LONG_TELL ftello
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#elif defined(__MINGW32__) && !defined(__STRICT_ANSI__) && !defined(__NO_MINGW_LFS) && defined(__MSVCRT__)
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# define LONG_SEEK fseeko64
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# define LONG_TELL ftello64
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#elif defined(_WIN32) && !defined(__DJGPP__)
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# include <windows.h>
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static int LONG_SEEK(FILE* file, __int64 offset, int origin) {
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LARGE_INTEGER off;
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DWORD method;
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off.QuadPart = offset;
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if (origin == SEEK_END)
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method = FILE_END;
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else if (origin == SEEK_CUR)
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method = FILE_CURRENT;
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else
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method = FILE_BEGIN;
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if (SetFilePointerEx((HANDLE) _get_osfhandle(_fileno(file)), off, NULL, method))
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return 0;
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else
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return -1;
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}
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static __int64 LONG_TELL(FILE* file) {
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LARGE_INTEGER off, newOff;
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off.QuadPart = 0;
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newOff.QuadPart = 0;
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SetFilePointerEx((HANDLE) _get_osfhandle(_fileno(file)), off, &newOff, FILE_CURRENT);
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return newOff.QuadPart;
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}
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#else
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# define LONG_SEEK fseek
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# define LONG_TELL ftell
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#endif
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/*-*************************************
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* Parameters: FIO_prefs_t
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***************************************/
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/* typedef'd to FIO_prefs_t within fileio.h */
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struct FIO_prefs_s {
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/* Algorithm preferences */
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FIO_compressionType_t compressionType;
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U32 sparseFileSupport; /* 0: no sparse allowed; 1: auto (file yes, stdout no); 2: force sparse */
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int dictIDFlag;
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int checksumFlag;
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int blockSize;
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int overlapLog;
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U32 adaptiveMode;
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int rsyncable;
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int minAdaptLevel;
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int maxAdaptLevel;
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int ldmFlag;
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int ldmHashLog;
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int ldmMinMatch;
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int ldmBucketSizeLog;
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int ldmHashRateLog;
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size_t streamSrcSize;
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size_t targetCBlockSize;
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int srcSizeHint;
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int testMode;
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ZSTD_literalCompressionMode_e literalCompressionMode;
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/* IO preferences */
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U32 removeSrcFile;
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U32 overwrite;
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/* Computation resources preferences */
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unsigned memLimit;
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int nbWorkers;
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int excludeCompressedFiles;
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int patchFromMode;
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int contentSize;
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};
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/*-*************************************
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* Parameters: Initialization
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***************************************/
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#define FIO_OVERLAP_LOG_NOTSET 9999
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#define FIO_LDM_PARAM_NOTSET 9999
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FIO_prefs_t* FIO_createPreferences(void)
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{
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FIO_prefs_t* const ret = (FIO_prefs_t*)malloc(sizeof(FIO_prefs_t));
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if (!ret) EXM_THROW(21, "Allocation error : not enough memory");
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ret->compressionType = FIO_zstdCompression;
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ret->overwrite = 0;
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ret->sparseFileSupport = ZSTD_SPARSE_DEFAULT;
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ret->dictIDFlag = 1;
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ret->checksumFlag = 1;
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ret->removeSrcFile = 0;
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ret->memLimit = 0;
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ret->nbWorkers = 1;
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ret->blockSize = 0;
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ret->overlapLog = FIO_OVERLAP_LOG_NOTSET;
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ret->adaptiveMode = 0;
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ret->rsyncable = 0;
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ret->minAdaptLevel = -50; /* initializing this value requires a constant, so ZSTD_minCLevel() doesn't work */
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ret->maxAdaptLevel = 22; /* initializing this value requires a constant, so ZSTD_maxCLevel() doesn't work */
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ret->ldmFlag = 0;
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ret->ldmHashLog = 0;
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ret->ldmMinMatch = 0;
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ret->ldmBucketSizeLog = FIO_LDM_PARAM_NOTSET;
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ret->ldmHashRateLog = FIO_LDM_PARAM_NOTSET;
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ret->streamSrcSize = 0;
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ret->targetCBlockSize = 0;
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ret->srcSizeHint = 0;
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ret->testMode = 0;
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ret->literalCompressionMode = ZSTD_lcm_auto;
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ret->excludeCompressedFiles = 0;
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return ret;
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}
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void FIO_freePreferences(FIO_prefs_t* const prefs)
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{
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free(prefs);
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}
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/*-*************************************
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* Parameters: Display Options
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***************************************/
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void FIO_setNotificationLevel(int level) { g_display_prefs.displayLevel=level; }
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void FIO_setNoProgress(unsigned noProgress) { g_display_prefs.noProgress = noProgress; }
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/*-*************************************
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* Parameters: Setters
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***************************************/
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void FIO_setCompressionType(FIO_prefs_t* const prefs, FIO_compressionType_t compressionType) { prefs->compressionType = compressionType; }
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void FIO_overwriteMode(FIO_prefs_t* const prefs) { prefs->overwrite = 1; }
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void FIO_setSparseWrite(FIO_prefs_t* const prefs, unsigned sparse) { prefs->sparseFileSupport = sparse; }
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void FIO_setDictIDFlag(FIO_prefs_t* const prefs, int dictIDFlag) { prefs->dictIDFlag = dictIDFlag; }
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void FIO_setChecksumFlag(FIO_prefs_t* const prefs, int checksumFlag) { prefs->checksumFlag = checksumFlag; }
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void FIO_setRemoveSrcFile(FIO_prefs_t* const prefs, unsigned flag) { prefs->removeSrcFile = (flag>0); }
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void FIO_setMemLimit(FIO_prefs_t* const prefs, unsigned memLimit) { prefs->memLimit = memLimit; }
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void FIO_setNbWorkers(FIO_prefs_t* const prefs, int nbWorkers) {
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#ifndef ZSTD_MULTITHREAD
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if (nbWorkers > 0) DISPLAYLEVEL(2, "Note : multi-threading is disabled \n");
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#endif
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prefs->nbWorkers = nbWorkers;
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}
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void FIO_setExcludeCompressedFile(FIO_prefs_t* const prefs, int excludeCompressedFiles) { prefs->excludeCompressedFiles = excludeCompressedFiles; }
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void FIO_setBlockSize(FIO_prefs_t* const prefs, int blockSize) {
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if (blockSize && prefs->nbWorkers==0)
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DISPLAYLEVEL(2, "Setting block size is useless in single-thread mode \n");
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prefs->blockSize = blockSize;
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}
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void FIO_setOverlapLog(FIO_prefs_t* const prefs, int overlapLog){
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if (overlapLog && prefs->nbWorkers==0)
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DISPLAYLEVEL(2, "Setting overlapLog is useless in single-thread mode \n");
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prefs->overlapLog = overlapLog;
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}
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void FIO_setAdaptiveMode(FIO_prefs_t* const prefs, unsigned adapt) {
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if ((adapt>0) && (prefs->nbWorkers==0))
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EXM_THROW(1, "Adaptive mode is not compatible with single thread mode \n");
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prefs->adaptiveMode = adapt;
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}
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void FIO_setRsyncable(FIO_prefs_t* const prefs, int rsyncable) {
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if ((rsyncable>0) && (prefs->nbWorkers==0))
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EXM_THROW(1, "Rsyncable mode is not compatible with single thread mode \n");
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prefs->rsyncable = rsyncable;
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}
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void FIO_setStreamSrcSize(FIO_prefs_t* const prefs, size_t streamSrcSize) {
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prefs->streamSrcSize = streamSrcSize;
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}
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void FIO_setTargetCBlockSize(FIO_prefs_t* const prefs, size_t targetCBlockSize) {
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prefs->targetCBlockSize = targetCBlockSize;
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}
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void FIO_setSrcSizeHint(FIO_prefs_t* const prefs, size_t srcSizeHint) {
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prefs->srcSizeHint = (int)MIN((size_t)INT_MAX, srcSizeHint);
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}
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void FIO_setTestMode(FIO_prefs_t* const prefs, int testMode) {
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prefs->testMode = (testMode!=0);
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}
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void FIO_setLiteralCompressionMode(
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FIO_prefs_t* const prefs,
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ZSTD_literalCompressionMode_e mode) {
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prefs->literalCompressionMode = mode;
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}
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void FIO_setAdaptMin(FIO_prefs_t* const prefs, int minCLevel)
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{
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#ifndef ZSTD_NOCOMPRESS
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assert(minCLevel >= ZSTD_minCLevel());
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#endif
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prefs->minAdaptLevel = minCLevel;
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}
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void FIO_setAdaptMax(FIO_prefs_t* const prefs, int maxCLevel)
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{
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prefs->maxAdaptLevel = maxCLevel;
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}
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void FIO_setLdmFlag(FIO_prefs_t* const prefs, unsigned ldmFlag) {
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prefs->ldmFlag = (ldmFlag>0);
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}
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void FIO_setLdmHashLog(FIO_prefs_t* const prefs, int ldmHashLog) {
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prefs->ldmHashLog = ldmHashLog;
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}
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void FIO_setLdmMinMatch(FIO_prefs_t* const prefs, int ldmMinMatch) {
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prefs->ldmMinMatch = ldmMinMatch;
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}
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void FIO_setLdmBucketSizeLog(FIO_prefs_t* const prefs, int ldmBucketSizeLog) {
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prefs->ldmBucketSizeLog = ldmBucketSizeLog;
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}
|
|
|
|
|
|
void FIO_setLdmHashRateLog(FIO_prefs_t* const prefs, int ldmHashRateLog) {
|
|
prefs->ldmHashRateLog = ldmHashRateLog;
|
|
}
|
|
|
|
void FIO_setPatchFromMode(FIO_prefs_t* const prefs, int value)
|
|
{
|
|
prefs->patchFromMode = value != 0;
|
|
}
|
|
|
|
void FIO_setContentSize(FIO_prefs_t* const prefs, int value)
|
|
{
|
|
prefs->contentSize = value != 0;
|
|
}
|
|
|
|
/*-*************************************
|
|
* Functions
|
|
***************************************/
|
|
/** FIO_remove() :
|
|
* @result : Unlink `fileName`, even if it's read-only */
|
|
static int FIO_remove(const char* path)
|
|
{
|
|
if (!UTIL_isRegularFile(path)) {
|
|
DISPLAYLEVEL(2, "zstd: Refusing to remove non-regular file %s \n", path);
|
|
return 0;
|
|
}
|
|
#if defined(_WIN32) || defined(WIN32)
|
|
/* windows doesn't allow remove read-only files,
|
|
* so try to make it writable first */
|
|
UTIL_chmod(path, _S_IWRITE);
|
|
#endif
|
|
return remove(path);
|
|
}
|
|
|
|
/** FIO_openSrcFile() :
|
|
* condition : `srcFileName` must be non-NULL.
|
|
* @result : FILE* to `srcFileName`, or NULL if it fails */
|
|
static FILE* FIO_openSrcFile(const char* srcFileName)
|
|
{
|
|
assert(srcFileName != NULL);
|
|
if (!strcmp (srcFileName, stdinmark)) {
|
|
DISPLAYLEVEL(4,"Using stdin for input \n");
|
|
SET_BINARY_MODE(stdin);
|
|
return stdin;
|
|
}
|
|
|
|
if (!UTIL_fileExist(srcFileName)) {
|
|
DISPLAYLEVEL(1, "zstd: can't stat %s : %s -- ignored \n",
|
|
srcFileName, strerror(errno));
|
|
return NULL;
|
|
}
|
|
|
|
if (!UTIL_isRegularFile(srcFileName)
|
|
&& !UTIL_isFIFO(srcFileName)
|
|
) {
|
|
DISPLAYLEVEL(1, "zstd: %s is not a regular file -- ignored \n",
|
|
srcFileName);
|
|
return NULL;
|
|
}
|
|
|
|
{ FILE* const f = fopen(srcFileName, "rb");
|
|
if (f == NULL)
|
|
DISPLAYLEVEL(1, "zstd: %s: %s \n", srcFileName, strerror(errno));
|
|
return f;
|
|
}
|
|
}
|
|
|
|
/** FIO_openDstFile() :
|
|
* condition : `dstFileName` must be non-NULL.
|
|
* @result : FILE* to `dstFileName`, or NULL if it fails */
|
|
static FILE*
|
|
FIO_openDstFile(FIO_prefs_t* const prefs,
|
|
const char* srcFileName, const char* dstFileName)
|
|
{
|
|
if (prefs->testMode) return NULL; /* do not open file in test mode */
|
|
|
|
assert(dstFileName != NULL);
|
|
if (!strcmp (dstFileName, stdoutmark)) {
|
|
DISPLAYLEVEL(4,"Using stdout for output \n");
|
|
SET_BINARY_MODE(stdout);
|
|
if (prefs->sparseFileSupport == 1) {
|
|
prefs->sparseFileSupport = 0;
|
|
DISPLAYLEVEL(4, "Sparse File Support is automatically disabled on stdout ; try --sparse \n");
|
|
}
|
|
return stdout;
|
|
}
|
|
|
|
/* ensure dst is not the same as src */
|
|
if (srcFileName != NULL && UTIL_isSameFile(srcFileName, dstFileName)) {
|
|
DISPLAYLEVEL(1, "zstd: Refusing to open an output file which will overwrite the input file \n");
|
|
return NULL;
|
|
}
|
|
|
|
if (prefs->sparseFileSupport == 1) {
|
|
prefs->sparseFileSupport = ZSTD_SPARSE_DEFAULT;
|
|
}
|
|
|
|
if (UTIL_isRegularFile(dstFileName)) {
|
|
/* Check if destination file already exists */
|
|
FILE* const fCheck = fopen( dstFileName, "rb" );
|
|
#if !defined(_WIN32)
|
|
/* this test does not work on Windows :
|
|
* `NUL` and `nul` are detected as regular files */
|
|
if (!strcmp(dstFileName, nulmark)) {
|
|
EXM_THROW(40, "%s is unexpectedly categorized as a regular file",
|
|
dstFileName);
|
|
}
|
|
#endif
|
|
if (fCheck != NULL) { /* dst file exists, authorization prompt */
|
|
fclose(fCheck);
|
|
if (!prefs->overwrite) {
|
|
if (g_display_prefs.displayLevel <= 1) {
|
|
/* No interaction possible */
|
|
DISPLAY("zstd: %s already exists; not overwritten \n",
|
|
dstFileName);
|
|
return NULL;
|
|
}
|
|
DISPLAY("zstd: %s already exists; overwrite (y/N) ? ",
|
|
dstFileName);
|
|
{ int ch = getchar();
|
|
if ((ch!='Y') && (ch!='y')) {
|
|
DISPLAY(" not overwritten \n");
|
|
return NULL;
|
|
}
|
|
/* flush rest of input line */
|
|
while ((ch!=EOF) && (ch!='\n')) ch = getchar();
|
|
} }
|
|
/* need to unlink */
|
|
FIO_remove(dstFileName);
|
|
} }
|
|
|
|
{ FILE* const f = fopen( dstFileName, "wb" );
|
|
if (f == NULL) {
|
|
DISPLAYLEVEL(1, "zstd: %s: %s\n", dstFileName, strerror(errno));
|
|
} else if (srcFileName != NULL
|
|
&& strcmp (srcFileName, stdinmark)
|
|
&& strcmp(dstFileName, nulmark) ) {
|
|
/* reduce rights on newly created dst file while compression is ongoing */
|
|
UTIL_chmod(dstFileName, 00600);
|
|
}
|
|
return f;
|
|
}
|
|
}
|
|
|
|
|
|
/*! FIO_createDictBuffer() :
|
|
* creates a buffer, pointed by `*bufferPtr`,
|
|
* loads `filename` content into it, up to DICTSIZE_MAX bytes.
|
|
* @return : loaded size
|
|
* if fileName==NULL, returns 0 and a NULL pointer
|
|
*/
|
|
static size_t FIO_createDictBuffer(void** bufferPtr, const char* fileName, FIO_prefs_t* const prefs)
|
|
{
|
|
FILE* fileHandle;
|
|
U64 fileSize;
|
|
|
|
assert(bufferPtr != NULL);
|
|
*bufferPtr = NULL;
|
|
if (fileName == NULL) return 0;
|
|
|
|
DISPLAYLEVEL(4,"Loading %s as dictionary \n", fileName);
|
|
fileHandle = fopen(fileName, "rb");
|
|
if (fileHandle==NULL) EXM_THROW(31, "%s: %s", fileName, strerror(errno));
|
|
|
|
fileSize = UTIL_getFileSize(fileName);
|
|
{
|
|
size_t const dictSizeMax = prefs->patchFromMode ? prefs->memLimit : DICTSIZE_MAX;
|
|
if (fileSize > dictSizeMax) {
|
|
EXM_THROW(32, "Dictionary file %s is too large (> %u bytes)",
|
|
fileName, (unsigned)dictSizeMax); /* avoid extreme cases */
|
|
}
|
|
}
|
|
*bufferPtr = malloc((size_t)fileSize);
|
|
if (*bufferPtr==NULL) EXM_THROW(34, "%s", strerror(errno));
|
|
{ size_t const readSize = fread(*bufferPtr, 1, (size_t)fileSize, fileHandle);
|
|
if (readSize != fileSize)
|
|
EXM_THROW(35, "Error reading dictionary file %s : %s",
|
|
fileName, strerror(errno));
|
|
}
|
|
fclose(fileHandle);
|
|
return (size_t)fileSize;
|
|
}
|
|
|
|
|
|
|
|
/* FIO_checkFilenameCollisions() :
|
|
* Checks for and warns if there are any files that would have the same output path
|
|
*/
|
|
int FIO_checkFilenameCollisions(const char** filenameTable, unsigned nbFiles) {
|
|
const char **filenameTableSorted, *c, *prevElem, *filename;
|
|
unsigned u;
|
|
|
|
#if defined(_MSC_VER) || defined(__MINGW32__) || defined (__MSVCRT__) /* windows support */
|
|
c = "\\";
|
|
#else
|
|
c = "/";
|
|
#endif
|
|
|
|
filenameTableSorted = (const char**) malloc(sizeof(char*) * nbFiles);
|
|
if (!filenameTableSorted) {
|
|
DISPLAY("Unable to malloc new str array, not checking for name collisions\n");
|
|
return 1;
|
|
}
|
|
|
|
for (u = 0; u < nbFiles; ++u) {
|
|
filename = strrchr(filenameTable[u], c[0]);
|
|
if (filename == NULL) {
|
|
filenameTableSorted[u] = filenameTable[u];
|
|
} else {
|
|
filenameTableSorted[u] = filename+1;
|
|
}
|
|
}
|
|
|
|
qsort((void*)filenameTableSorted, nbFiles, sizeof(char*), UTIL_compareStr);
|
|
prevElem = filenameTableSorted[0];
|
|
for (u = 1; u < nbFiles; ++u) {
|
|
if (strcmp(prevElem, filenameTableSorted[u]) == 0) {
|
|
DISPLAY("WARNING: Two files have same filename: %s\n", prevElem);
|
|
}
|
|
prevElem = filenameTableSorted[u];
|
|
}
|
|
|
|
free((void*)filenameTableSorted);
|
|
return 0;
|
|
}
|
|
|
|
static const char*
|
|
extractFilename(const char* path, char separator)
|
|
{
|
|
const char* search = strrchr(path, separator);
|
|
if (search == NULL) return path;
|
|
return search+1;
|
|
}
|
|
|
|
/* FIO_createFilename_fromOutDir() :
|
|
* Takes a source file name and specified output directory, and
|
|
* allocates memory for and returns a pointer to final path.
|
|
* This function never returns an error (it may abort() in case of pb)
|
|
*/
|
|
static char*
|
|
FIO_createFilename_fromOutDir(const char* path, const char* outDirName, const size_t suffixLen)
|
|
{
|
|
const char* filenameStart;
|
|
char separator;
|
|
char* result;
|
|
|
|
#if defined(_MSC_VER) || defined(__MINGW32__) || defined (__MSVCRT__) /* windows support */
|
|
separator = '\\';
|
|
#else
|
|
separator = '/';
|
|
#endif
|
|
|
|
filenameStart = extractFilename(path, separator);
|
|
#if defined(_MSC_VER) || defined(__MINGW32__) || defined (__MSVCRT__) /* windows support */
|
|
filenameStart = extractFilename(filenameStart, '/'); /* sometimes, '/' separator is also used on Windows (mingw+msys2) */
|
|
#endif
|
|
|
|
result = (char*) calloc(1, strlen(outDirName) + 1 + strlen(filenameStart) + suffixLen + 1);
|
|
if (!result) {
|
|
EXM_THROW(30, "zstd: FIO_createFilename_fromOutDir: %s", strerror(errno));
|
|
}
|
|
|
|
memcpy(result, outDirName, strlen(outDirName));
|
|
if (outDirName[strlen(outDirName)-1] == separator) {
|
|
memcpy(result + strlen(outDirName), filenameStart, strlen(filenameStart));
|
|
} else {
|
|
memcpy(result + strlen(outDirName), &separator, 1);
|
|
memcpy(result + strlen(outDirName) + 1, filenameStart, strlen(filenameStart));
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* FIO_highbit64() :
|
|
* gives position of highest bit.
|
|
* note : only works for v > 0 !
|
|
*/
|
|
static unsigned FIO_highbit64(unsigned long long v)
|
|
{
|
|
unsigned count = 0;
|
|
assert(v != 0);
|
|
v >>= 1;
|
|
while (v) { v >>= 1; count++; }
|
|
return count;
|
|
}
|
|
|
|
static void FIO_adjustMemLimitForPatchFromMode(FIO_prefs_t* const prefs,
|
|
unsigned long long const dictSize,
|
|
unsigned long long const maxSrcFileSize)
|
|
{
|
|
unsigned long long maxSize = MAX(prefs->memLimit, MAX(dictSize, maxSrcFileSize));
|
|
assert(maxSize != UTIL_FILESIZE_UNKNOWN);
|
|
if (maxSize > UINT_MAX)
|
|
EXM_THROW(42, "Can't handle files larger than %u GB\n", UINT_MAX/(1 GB) + 1);
|
|
FIO_setMemLimit(prefs, (unsigned)maxSize);
|
|
}
|
|
|
|
#ifndef ZSTD_NOCOMPRESS
|
|
|
|
/* **********************************************************************
|
|
* Compression
|
|
************************************************************************/
|
|
typedef struct {
|
|
FILE* srcFile;
|
|
FILE* dstFile;
|
|
void* srcBuffer;
|
|
size_t srcBufferSize;
|
|
void* dstBuffer;
|
|
size_t dstBufferSize;
|
|
void* dictBuffer;
|
|
size_t dictBufferSize;
|
|
const char* dictFileName;
|
|
ZSTD_CStream* cctx;
|
|
} cRess_t;
|
|
|
|
static void FIO_adjustParamsForPatchFromMode(FIO_prefs_t* const prefs,
|
|
ZSTD_compressionParameters* comprParams,
|
|
unsigned long long const dictSize,
|
|
unsigned long long const maxSrcFileSize,
|
|
int cLevel)
|
|
{
|
|
unsigned const fileWindowLog = FIO_highbit64(maxSrcFileSize) + 1;
|
|
ZSTD_compressionParameters const cParams = ZSTD_getCParams(cLevel, (size_t)maxSrcFileSize, (size_t)dictSize);
|
|
FIO_adjustMemLimitForPatchFromMode(prefs, dictSize, maxSrcFileSize);
|
|
if (fileWindowLog > ZSTD_WINDOWLOG_MAX)
|
|
DISPLAYLEVEL(1, "Max window log exceeded by file (compression ratio will suffer)\n");
|
|
comprParams->windowLog = MIN(ZSTD_WINDOWLOG_MAX, fileWindowLog);
|
|
if (fileWindowLog > ZSTD_cycleLog(cParams.hashLog, cParams.strategy)) {
|
|
if (!prefs->ldmFlag)
|
|
DISPLAYLEVEL(1, "long mode automaticaly triggered\n");
|
|
FIO_setLdmFlag(prefs, 1);
|
|
}
|
|
if (cParams.strategy >= ZSTD_btopt) {
|
|
DISPLAYLEVEL(1, "[Optimal parser notes] Consider the following to improve patch size at the cost of speed:\n");
|
|
DISPLAYLEVEL(1, "- Use --single-thread mode in the zstd cli\n");
|
|
DISPLAYLEVEL(1, "- Set a larger targetLength (eg. --zstd=targetLength=4096)\n");
|
|
DISPLAYLEVEL(1, "- Set a larger chainLog (eg. --zstd=chainLog=%u)\n", ZSTD_CHAINLOG_MAX);
|
|
DISPLAYLEVEL(1, "Also consdier playing around with searchLog and hashLog\n");
|
|
}
|
|
}
|
|
|
|
static cRess_t FIO_createCResources(FIO_prefs_t* const prefs,
|
|
const char* dictFileName, unsigned long long const maxSrcFileSize,
|
|
int cLevel, ZSTD_compressionParameters comprParams) {
|
|
cRess_t ress;
|
|
memset(&ress, 0, sizeof(ress));
|
|
|
|
DISPLAYLEVEL(6, "FIO_createCResources \n");
|
|
ress.cctx = ZSTD_createCCtx();
|
|
if (ress.cctx == NULL)
|
|
EXM_THROW(30, "allocation error (%s): can't create ZSTD_CCtx",
|
|
strerror(errno));
|
|
ress.srcBufferSize = ZSTD_CStreamInSize();
|
|
ress.srcBuffer = malloc(ress.srcBufferSize);
|
|
ress.dstBufferSize = ZSTD_CStreamOutSize();
|
|
|
|
/* need to update memLimit before calling createDictBuffer
|
|
* because of memLimit check inside it */
|
|
if (prefs->patchFromMode)
|
|
FIO_adjustParamsForPatchFromMode(prefs, &comprParams, UTIL_getFileSize(dictFileName), maxSrcFileSize, cLevel);
|
|
ress.dstBuffer = malloc(ress.dstBufferSize);
|
|
ress.dictBufferSize = FIO_createDictBuffer(&ress.dictBuffer, dictFileName, prefs); /* works with dictFileName==NULL */
|
|
if (!ress.srcBuffer || !ress.dstBuffer)
|
|
EXM_THROW(31, "allocation error : not enough memory");
|
|
|
|
/* Advanced parameters, including dictionary */
|
|
if (dictFileName && (ress.dictBuffer==NULL))
|
|
EXM_THROW(32, "allocation error : can't create dictBuffer");
|
|
ress.dictFileName = dictFileName;
|
|
|
|
if (prefs->adaptiveMode && !prefs->ldmFlag && !comprParams.windowLog)
|
|
comprParams.windowLog = ADAPT_WINDOWLOG_DEFAULT;
|
|
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_contentSizeFlag, prefs->contentSize) ); /* always enable content size when available (note: supposed to be default) */
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_dictIDFlag, prefs->dictIDFlag) );
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_checksumFlag, prefs->checksumFlag) );
|
|
/* compression level */
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_compressionLevel, cLevel) );
|
|
/* max compressed block size */
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_targetCBlockSize, (int)prefs->targetCBlockSize) );
|
|
/* source size hint */
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_srcSizeHint, (int)prefs->srcSizeHint) );
|
|
/* long distance matching */
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_enableLongDistanceMatching, prefs->ldmFlag) );
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_ldmHashLog, prefs->ldmHashLog) );
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_ldmMinMatch, prefs->ldmMinMatch) );
|
|
if (prefs->ldmBucketSizeLog != FIO_LDM_PARAM_NOTSET) {
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_ldmBucketSizeLog, prefs->ldmBucketSizeLog) );
|
|
}
|
|
if (prefs->ldmHashRateLog != FIO_LDM_PARAM_NOTSET) {
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_ldmHashRateLog, prefs->ldmHashRateLog) );
|
|
}
|
|
/* compression parameters */
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_windowLog, (int)comprParams.windowLog) );
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_chainLog, (int)comprParams.chainLog) );
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_hashLog, (int)comprParams.hashLog) );
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_searchLog, (int)comprParams.searchLog) );
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_minMatch, (int)comprParams.minMatch) );
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_targetLength, (int)comprParams.targetLength) );
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_strategy, comprParams.strategy) );
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_literalCompressionMode, (int)prefs->literalCompressionMode) );
|
|
/* multi-threading */
|
|
#ifdef ZSTD_MULTITHREAD
|
|
DISPLAYLEVEL(5,"set nb workers = %u \n", prefs->nbWorkers);
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_nbWorkers, prefs->nbWorkers) );
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_jobSize, prefs->blockSize) );
|
|
if (prefs->overlapLog != FIO_OVERLAP_LOG_NOTSET) {
|
|
DISPLAYLEVEL(3,"set overlapLog = %u \n", prefs->overlapLog);
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_overlapLog, prefs->overlapLog) );
|
|
}
|
|
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_rsyncable, prefs->rsyncable) );
|
|
#endif
|
|
/* dictionary */
|
|
if (prefs->patchFromMode) {
|
|
CHECK( ZSTD_CCtx_refPrefix(ress.cctx, ress.dictBuffer, ress.dictBufferSize) );
|
|
} else {
|
|
CHECK( ZSTD_CCtx_loadDictionary(ress.cctx, ress.dictBuffer, ress.dictBufferSize) );
|
|
}
|
|
|
|
return ress;
|
|
}
|
|
|
|
static void FIO_freeCResources(cRess_t ress)
|
|
{
|
|
free(ress.srcBuffer);
|
|
free(ress.dstBuffer);
|
|
free(ress.dictBuffer);
|
|
ZSTD_freeCStream(ress.cctx); /* never fails */
|
|
}
|
|
|
|
|
|
#ifdef ZSTD_GZCOMPRESS
|
|
static unsigned long long
|
|
FIO_compressGzFrame(const cRess_t* ress, /* buffers & handlers are used, but not changed */
|
|
const char* srcFileName, U64 const srcFileSize,
|
|
int compressionLevel, U64* readsize)
|
|
{
|
|
unsigned long long inFileSize = 0, outFileSize = 0;
|
|
z_stream strm;
|
|
|
|
if (compressionLevel > Z_BEST_COMPRESSION)
|
|
compressionLevel = Z_BEST_COMPRESSION;
|
|
|
|
strm.zalloc = Z_NULL;
|
|
strm.zfree = Z_NULL;
|
|
strm.opaque = Z_NULL;
|
|
|
|
{ int const ret = deflateInit2(&strm, compressionLevel, Z_DEFLATED,
|
|
15 /* maxWindowLogSize */ + 16 /* gzip only */,
|
|
8, Z_DEFAULT_STRATEGY); /* see http://www.zlib.net/manual.html */
|
|
if (ret != Z_OK) {
|
|
EXM_THROW(71, "zstd: %s: deflateInit2 error %d \n", srcFileName, ret);
|
|
} }
|
|
|
|
strm.next_in = 0;
|
|
strm.avail_in = 0;
|
|
strm.next_out = (Bytef*)ress->dstBuffer;
|
|
strm.avail_out = (uInt)ress->dstBufferSize;
|
|
|
|
while (1) {
|
|
int ret;
|
|
if (strm.avail_in == 0) {
|
|
size_t const inSize = fread(ress->srcBuffer, 1, ress->srcBufferSize, ress->srcFile);
|
|
if (inSize == 0) break;
|
|
inFileSize += inSize;
|
|
strm.next_in = (z_const unsigned char*)ress->srcBuffer;
|
|
strm.avail_in = (uInt)inSize;
|
|
}
|
|
ret = deflate(&strm, Z_NO_FLUSH);
|
|
if (ret != Z_OK)
|
|
EXM_THROW(72, "zstd: %s: deflate error %d \n", srcFileName, ret);
|
|
{ size_t const cSize = ress->dstBufferSize - strm.avail_out;
|
|
if (cSize) {
|
|
if (fwrite(ress->dstBuffer, 1, cSize, ress->dstFile) != cSize)
|
|
EXM_THROW(73, "Write error : cannot write to output file : %s ", strerror(errno));
|
|
outFileSize += cSize;
|
|
strm.next_out = (Bytef*)ress->dstBuffer;
|
|
strm.avail_out = (uInt)ress->dstBufferSize;
|
|
} }
|
|
if (srcFileSize == UTIL_FILESIZE_UNKNOWN) {
|
|
DISPLAYUPDATE(2, "\rRead : %u MB ==> %.2f%% ",
|
|
(unsigned)(inFileSize>>20),
|
|
(double)outFileSize/inFileSize*100)
|
|
} else {
|
|
DISPLAYUPDATE(2, "\rRead : %u / %u MB ==> %.2f%% ",
|
|
(unsigned)(inFileSize>>20), (unsigned)(srcFileSize>>20),
|
|
(double)outFileSize/inFileSize*100);
|
|
} }
|
|
|
|
while (1) {
|
|
int const ret = deflate(&strm, Z_FINISH);
|
|
{ size_t const cSize = ress->dstBufferSize - strm.avail_out;
|
|
if (cSize) {
|
|
if (fwrite(ress->dstBuffer, 1, cSize, ress->dstFile) != cSize)
|
|
EXM_THROW(75, "Write error : %s ", strerror(errno));
|
|
outFileSize += cSize;
|
|
strm.next_out = (Bytef*)ress->dstBuffer;
|
|
strm.avail_out = (uInt)ress->dstBufferSize;
|
|
} }
|
|
if (ret == Z_STREAM_END) break;
|
|
if (ret != Z_BUF_ERROR)
|
|
EXM_THROW(77, "zstd: %s: deflate error %d \n", srcFileName, ret);
|
|
}
|
|
|
|
{ int const ret = deflateEnd(&strm);
|
|
if (ret != Z_OK) {
|
|
EXM_THROW(79, "zstd: %s: deflateEnd error %d \n", srcFileName, ret);
|
|
} }
|
|
*readsize = inFileSize;
|
|
return outFileSize;
|
|
}
|
|
#endif
|
|
|
|
|
|
#ifdef ZSTD_LZMACOMPRESS
|
|
static unsigned long long
|
|
FIO_compressLzmaFrame(cRess_t* ress,
|
|
const char* srcFileName, U64 const srcFileSize,
|
|
int compressionLevel, U64* readsize, int plain_lzma)
|
|
{
|
|
unsigned long long inFileSize = 0, outFileSize = 0;
|
|
lzma_stream strm = LZMA_STREAM_INIT;
|
|
lzma_action action = LZMA_RUN;
|
|
lzma_ret ret;
|
|
|
|
if (compressionLevel < 0) compressionLevel = 0;
|
|
if (compressionLevel > 9) compressionLevel = 9;
|
|
|
|
if (plain_lzma) {
|
|
lzma_options_lzma opt_lzma;
|
|
if (lzma_lzma_preset(&opt_lzma, compressionLevel))
|
|
EXM_THROW(81, "zstd: %s: lzma_lzma_preset error", srcFileName);
|
|
ret = lzma_alone_encoder(&strm, &opt_lzma); /* LZMA */
|
|
if (ret != LZMA_OK)
|
|
EXM_THROW(82, "zstd: %s: lzma_alone_encoder error %d", srcFileName, ret);
|
|
} else {
|
|
ret = lzma_easy_encoder(&strm, compressionLevel, LZMA_CHECK_CRC64); /* XZ */
|
|
if (ret != LZMA_OK)
|
|
EXM_THROW(83, "zstd: %s: lzma_easy_encoder error %d", srcFileName, ret);
|
|
}
|
|
|
|
strm.next_in = 0;
|
|
strm.avail_in = 0;
|
|
strm.next_out = (BYTE*)ress->dstBuffer;
|
|
strm.avail_out = ress->dstBufferSize;
|
|
|
|
while (1) {
|
|
if (strm.avail_in == 0) {
|
|
size_t const inSize = fread(ress->srcBuffer, 1, ress->srcBufferSize, ress->srcFile);
|
|
if (inSize == 0) action = LZMA_FINISH;
|
|
inFileSize += inSize;
|
|
strm.next_in = (BYTE const*)ress->srcBuffer;
|
|
strm.avail_in = inSize;
|
|
}
|
|
|
|
ret = lzma_code(&strm, action);
|
|
|
|
if (ret != LZMA_OK && ret != LZMA_STREAM_END)
|
|
EXM_THROW(84, "zstd: %s: lzma_code encoding error %d", srcFileName, ret);
|
|
{ size_t const compBytes = ress->dstBufferSize - strm.avail_out;
|
|
if (compBytes) {
|
|
if (fwrite(ress->dstBuffer, 1, compBytes, ress->dstFile) != compBytes)
|
|
EXM_THROW(85, "Write error : %s", strerror(errno));
|
|
outFileSize += compBytes;
|
|
strm.next_out = (BYTE*)ress->dstBuffer;
|
|
strm.avail_out = ress->dstBufferSize;
|
|
} }
|
|
if (srcFileSize == UTIL_FILESIZE_UNKNOWN)
|
|
DISPLAYUPDATE(2, "\rRead : %u MB ==> %.2f%%",
|
|
(unsigned)(inFileSize>>20),
|
|
(double)outFileSize/inFileSize*100)
|
|
else
|
|
DISPLAYUPDATE(2, "\rRead : %u / %u MB ==> %.2f%%",
|
|
(unsigned)(inFileSize>>20), (unsigned)(srcFileSize>>20),
|
|
(double)outFileSize/inFileSize*100);
|
|
if (ret == LZMA_STREAM_END) break;
|
|
}
|
|
|
|
lzma_end(&strm);
|
|
*readsize = inFileSize;
|
|
|
|
return outFileSize;
|
|
}
|
|
#endif
|
|
|
|
#ifdef ZSTD_LZ4COMPRESS
|
|
|
|
#if LZ4_VERSION_NUMBER <= 10600
|
|
#define LZ4F_blockLinked blockLinked
|
|
#define LZ4F_max64KB max64KB
|
|
#endif
|
|
|
|
static int FIO_LZ4_GetBlockSize_FromBlockId (int id) { return (1 << (8 + (2 * id))); }
|
|
|
|
static unsigned long long
|
|
FIO_compressLz4Frame(cRess_t* ress,
|
|
const char* srcFileName, U64 const srcFileSize,
|
|
int compressionLevel, int checksumFlag,
|
|
U64* readsize)
|
|
{
|
|
const size_t blockSize = FIO_LZ4_GetBlockSize_FromBlockId(LZ4F_max64KB);
|
|
unsigned long long inFileSize = 0, outFileSize = 0;
|
|
|
|
LZ4F_preferences_t prefs;
|
|
LZ4F_compressionContext_t ctx;
|
|
|
|
LZ4F_errorCode_t const errorCode = LZ4F_createCompressionContext(&ctx, LZ4F_VERSION);
|
|
if (LZ4F_isError(errorCode))
|
|
EXM_THROW(31, "zstd: failed to create lz4 compression context");
|
|
|
|
memset(&prefs, 0, sizeof(prefs));
|
|
|
|
assert(blockSize <= ress->srcBufferSize);
|
|
|
|
prefs.autoFlush = 1;
|
|
prefs.compressionLevel = compressionLevel;
|
|
prefs.frameInfo.blockMode = LZ4F_blockLinked;
|
|
prefs.frameInfo.blockSizeID = LZ4F_max64KB;
|
|
prefs.frameInfo.contentChecksumFlag = (contentChecksum_t)checksumFlag;
|
|
#if LZ4_VERSION_NUMBER >= 10600
|
|
prefs.frameInfo.contentSize = (srcFileSize==UTIL_FILESIZE_UNKNOWN) ? 0 : srcFileSize;
|
|
#endif
|
|
assert(LZ4F_compressBound(blockSize, &prefs) <= ress->dstBufferSize);
|
|
|
|
{
|
|
size_t readSize;
|
|
size_t headerSize = LZ4F_compressBegin(ctx, ress->dstBuffer, ress->dstBufferSize, &prefs);
|
|
if (LZ4F_isError(headerSize))
|
|
EXM_THROW(33, "File header generation failed : %s",
|
|
LZ4F_getErrorName(headerSize));
|
|
if (fwrite(ress->dstBuffer, 1, headerSize, ress->dstFile) != headerSize)
|
|
EXM_THROW(34, "Write error : %s (cannot write header)", strerror(errno));
|
|
outFileSize += headerSize;
|
|
|
|
/* Read first block */
|
|
readSize = fread(ress->srcBuffer, (size_t)1, (size_t)blockSize, ress->srcFile);
|
|
inFileSize += readSize;
|
|
|
|
/* Main Loop */
|
|
while (readSize>0) {
|
|
size_t const outSize = LZ4F_compressUpdate(ctx,
|
|
ress->dstBuffer, ress->dstBufferSize,
|
|
ress->srcBuffer, readSize, NULL);
|
|
if (LZ4F_isError(outSize))
|
|
EXM_THROW(35, "zstd: %s: lz4 compression failed : %s",
|
|
srcFileName, LZ4F_getErrorName(outSize));
|
|
outFileSize += outSize;
|
|
if (srcFileSize == UTIL_FILESIZE_UNKNOWN) {
|
|
DISPLAYUPDATE(2, "\rRead : %u MB ==> %.2f%%",
|
|
(unsigned)(inFileSize>>20),
|
|
(double)outFileSize/inFileSize*100)
|
|
} else {
|
|
DISPLAYUPDATE(2, "\rRead : %u / %u MB ==> %.2f%%",
|
|
(unsigned)(inFileSize>>20), (unsigned)(srcFileSize>>20),
|
|
(double)outFileSize/inFileSize*100);
|
|
}
|
|
|
|
/* Write Block */
|
|
{ size_t const sizeCheck = fwrite(ress->dstBuffer, 1, outSize, ress->dstFile);
|
|
if (sizeCheck != outSize)
|
|
EXM_THROW(36, "Write error : %s", strerror(errno));
|
|
}
|
|
|
|
/* Read next block */
|
|
readSize = fread(ress->srcBuffer, (size_t)1, (size_t)blockSize, ress->srcFile);
|
|
inFileSize += readSize;
|
|
}
|
|
if (ferror(ress->srcFile)) EXM_THROW(37, "Error reading %s ", srcFileName);
|
|
|
|
/* End of Stream mark */
|
|
headerSize = LZ4F_compressEnd(ctx, ress->dstBuffer, ress->dstBufferSize, NULL);
|
|
if (LZ4F_isError(headerSize))
|
|
EXM_THROW(38, "zstd: %s: lz4 end of file generation failed : %s",
|
|
srcFileName, LZ4F_getErrorName(headerSize));
|
|
|
|
{ size_t const sizeCheck = fwrite(ress->dstBuffer, 1, headerSize, ress->dstFile);
|
|
if (sizeCheck != headerSize)
|
|
EXM_THROW(39, "Write error : %s (cannot write end of stream)",
|
|
strerror(errno));
|
|
}
|
|
outFileSize += headerSize;
|
|
}
|
|
|
|
*readsize = inFileSize;
|
|
LZ4F_freeCompressionContext(ctx);
|
|
|
|
return outFileSize;
|
|
}
|
|
#endif
|
|
|
|
|
|
static unsigned long long
|
|
FIO_compressZstdFrame(FIO_prefs_t* const prefs,
|
|
const cRess_t* ressPtr,
|
|
const char* srcFileName, U64 fileSize,
|
|
int compressionLevel, U64* readsize)
|
|
{
|
|
cRess_t const ress = *ressPtr;
|
|
FILE* const srcFile = ress.srcFile;
|
|
FILE* const dstFile = ress.dstFile;
|
|
U64 compressedfilesize = 0;
|
|
ZSTD_EndDirective directive = ZSTD_e_continue;
|
|
|
|
/* stats */
|
|
ZSTD_frameProgression previous_zfp_update = { 0, 0, 0, 0, 0, 0 };
|
|
ZSTD_frameProgression previous_zfp_correction = { 0, 0, 0, 0, 0, 0 };
|
|
typedef enum { noChange, slower, faster } speedChange_e;
|
|
speedChange_e speedChange = noChange;
|
|
unsigned flushWaiting = 0;
|
|
unsigned inputPresented = 0;
|
|
unsigned inputBlocked = 0;
|
|
unsigned lastJobID = 0;
|
|
|
|
DISPLAYLEVEL(6, "compression using zstd format \n");
|
|
|
|
/* init */
|
|
if (fileSize != UTIL_FILESIZE_UNKNOWN) {
|
|
CHECK(ZSTD_CCtx_setPledgedSrcSize(ress.cctx, fileSize));
|
|
} else if (prefs->streamSrcSize > 0) {
|
|
/* unknown source size; use the declared stream size */
|
|
CHECK( ZSTD_CCtx_setPledgedSrcSize(ress.cctx, prefs->streamSrcSize) );
|
|
}
|
|
(void)srcFileName;
|
|
|
|
/* Main compression loop */
|
|
do {
|
|
size_t stillToFlush;
|
|
/* Fill input Buffer */
|
|
size_t const inSize = fread(ress.srcBuffer, (size_t)1, ress.srcBufferSize, srcFile);
|
|
ZSTD_inBuffer inBuff = { ress.srcBuffer, inSize, 0 };
|
|
DISPLAYLEVEL(6, "fread %u bytes from source \n", (unsigned)inSize);
|
|
*readsize += inSize;
|
|
|
|
if ((inSize == 0) || (*readsize == fileSize))
|
|
directive = ZSTD_e_end;
|
|
|
|
stillToFlush = 1;
|
|
while ((inBuff.pos != inBuff.size) /* input buffer must be entirely ingested */
|
|
|| (directive == ZSTD_e_end && stillToFlush != 0) ) {
|
|
|
|
size_t const oldIPos = inBuff.pos;
|
|
ZSTD_outBuffer outBuff = { ress.dstBuffer, ress.dstBufferSize, 0 };
|
|
size_t const toFlushNow = ZSTD_toFlushNow(ress.cctx);
|
|
CHECK_V(stillToFlush, ZSTD_compressStream2(ress.cctx, &outBuff, &inBuff, directive));
|
|
|
|
/* count stats */
|
|
inputPresented++;
|
|
if (oldIPos == inBuff.pos) inputBlocked++; /* input buffer is full and can't take any more : input speed is faster than consumption rate */
|
|
if (!toFlushNow) flushWaiting = 1;
|
|
|
|
/* Write compressed stream */
|
|
DISPLAYLEVEL(6, "ZSTD_compress_generic(end:%u) => input pos(%u)<=(%u)size ; output generated %u bytes \n",
|
|
(unsigned)directive, (unsigned)inBuff.pos, (unsigned)inBuff.size, (unsigned)outBuff.pos);
|
|
if (outBuff.pos) {
|
|
size_t const sizeCheck = fwrite(ress.dstBuffer, 1, outBuff.pos, dstFile);
|
|
if (sizeCheck != outBuff.pos)
|
|
EXM_THROW(25, "Write error : %s (cannot write compressed block)",
|
|
strerror(errno));
|
|
compressedfilesize += outBuff.pos;
|
|
}
|
|
|
|
/* display notification; and adapt compression level */
|
|
if (READY_FOR_UPDATE()) {
|
|
ZSTD_frameProgression const zfp = ZSTD_getFrameProgression(ress.cctx);
|
|
double const cShare = (double)zfp.produced / (zfp.consumed + !zfp.consumed/*avoid div0*/) * 100;
|
|
|
|
/* display progress notifications */
|
|
if (g_display_prefs.displayLevel >= 3) {
|
|
DISPLAYUPDATE(3, "\r(L%i) Buffered :%4u MB - Consumed :%4u MB - Compressed :%4u MB => %.2f%% ",
|
|
compressionLevel,
|
|
(unsigned)((zfp.ingested - zfp.consumed) >> 20),
|
|
(unsigned)(zfp.consumed >> 20),
|
|
(unsigned)(zfp.produced >> 20),
|
|
cShare );
|
|
} else { /* summarized notifications if == 2; */
|
|
DISPLAYLEVEL(2, "\rRead : %u ", (unsigned)(zfp.consumed >> 20));
|
|
if (fileSize != UTIL_FILESIZE_UNKNOWN)
|
|
DISPLAYLEVEL(2, "/ %u ", (unsigned)(fileSize >> 20));
|
|
DISPLAYLEVEL(2, "MB ==> %2.f%% ", cShare);
|
|
DELAY_NEXT_UPDATE();
|
|
}
|
|
|
|
/* adaptive mode : statistics measurement and speed correction */
|
|
if (prefs->adaptiveMode) {
|
|
|
|
/* check output speed */
|
|
if (zfp.currentJobID > 1) { /* only possible if nbWorkers >= 1 */
|
|
|
|
unsigned long long newlyProduced = zfp.produced - previous_zfp_update.produced;
|
|
unsigned long long newlyFlushed = zfp.flushed - previous_zfp_update.flushed;
|
|
assert(zfp.produced >= previous_zfp_update.produced);
|
|
assert(prefs->nbWorkers >= 1);
|
|
|
|
/* test if compression is blocked
|
|
* either because output is slow and all buffers are full
|
|
* or because input is slow and no job can start while waiting for at least one buffer to be filled.
|
|
* note : exclude starting part, since currentJobID > 1 */
|
|
if ( (zfp.consumed == previous_zfp_update.consumed) /* no data compressed : no data available, or no more buffer to compress to, OR compression is really slow (compression of a single block is slower than update rate)*/
|
|
&& (zfp.nbActiveWorkers == 0) /* confirmed : no compression ongoing */
|
|
) {
|
|
DISPLAYLEVEL(6, "all buffers full : compression stopped => slow down \n")
|
|
speedChange = slower;
|
|
}
|
|
|
|
previous_zfp_update = zfp;
|
|
|
|
if ( (newlyProduced > (newlyFlushed * 9 / 8)) /* compression produces more data than output can flush (though production can be spiky, due to work unit : (N==4)*block sizes) */
|
|
&& (flushWaiting == 0) /* flush speed was never slowed by lack of production, so it's operating at max capacity */
|
|
) {
|
|
DISPLAYLEVEL(6, "compression faster than flush (%llu > %llu), and flushed was never slowed down by lack of production => slow down \n", newlyProduced, newlyFlushed);
|
|
speedChange = slower;
|
|
}
|
|
flushWaiting = 0;
|
|
}
|
|
|
|
/* course correct only if there is at least one new job completed */
|
|
if (zfp.currentJobID > lastJobID) {
|
|
DISPLAYLEVEL(6, "compression level adaptation check \n")
|
|
|
|
/* check input speed */
|
|
if (zfp.currentJobID > (unsigned)(prefs->nbWorkers+1)) { /* warm up period, to fill all workers */
|
|
if (inputBlocked <= 0) {
|
|
DISPLAYLEVEL(6, "input is never blocked => input is slower than ingestion \n");
|
|
speedChange = slower;
|
|
} else if (speedChange == noChange) {
|
|
unsigned long long newlyIngested = zfp.ingested - previous_zfp_correction.ingested;
|
|
unsigned long long newlyConsumed = zfp.consumed - previous_zfp_correction.consumed;
|
|
unsigned long long newlyProduced = zfp.produced - previous_zfp_correction.produced;
|
|
unsigned long long newlyFlushed = zfp.flushed - previous_zfp_correction.flushed;
|
|
previous_zfp_correction = zfp;
|
|
assert(inputPresented > 0);
|
|
DISPLAYLEVEL(6, "input blocked %u/%u(%.2f) - ingested:%u vs %u:consumed - flushed:%u vs %u:produced \n",
|
|
inputBlocked, inputPresented, (double)inputBlocked/inputPresented*100,
|
|
(unsigned)newlyIngested, (unsigned)newlyConsumed,
|
|
(unsigned)newlyFlushed, (unsigned)newlyProduced);
|
|
if ( (inputBlocked > inputPresented / 8) /* input is waiting often, because input buffers is full : compression or output too slow */
|
|
&& (newlyFlushed * 33 / 32 > newlyProduced) /* flush everything that is produced */
|
|
&& (newlyIngested * 33 / 32 > newlyConsumed) /* input speed as fast or faster than compression speed */
|
|
) {
|
|
DISPLAYLEVEL(6, "recommend faster as in(%llu) >= (%llu)comp(%llu) <= out(%llu) \n",
|
|
newlyIngested, newlyConsumed, newlyProduced, newlyFlushed);
|
|
speedChange = faster;
|
|
}
|
|
}
|
|
inputBlocked = 0;
|
|
inputPresented = 0;
|
|
}
|
|
|
|
if (speedChange == slower) {
|
|
DISPLAYLEVEL(6, "slower speed , higher compression \n")
|
|
compressionLevel ++;
|
|
if (compressionLevel > ZSTD_maxCLevel()) compressionLevel = ZSTD_maxCLevel();
|
|
if (compressionLevel > prefs->maxAdaptLevel) compressionLevel = prefs->maxAdaptLevel;
|
|
compressionLevel += (compressionLevel == 0); /* skip 0 */
|
|
ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_compressionLevel, compressionLevel);
|
|
}
|
|
if (speedChange == faster) {
|
|
DISPLAYLEVEL(6, "faster speed , lighter compression \n")
|
|
compressionLevel --;
|
|
if (compressionLevel < prefs->minAdaptLevel) compressionLevel = prefs->minAdaptLevel;
|
|
compressionLevel -= (compressionLevel == 0); /* skip 0 */
|
|
ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_compressionLevel, compressionLevel);
|
|
}
|
|
speedChange = noChange;
|
|
|
|
lastJobID = zfp.currentJobID;
|
|
} /* if (zfp.currentJobID > lastJobID) */
|
|
} /* if (g_adaptiveMode) */
|
|
} /* if (READY_FOR_UPDATE()) */
|
|
} /* while ((inBuff.pos != inBuff.size) */
|
|
} while (directive != ZSTD_e_end);
|
|
|
|
if (ferror(srcFile)) {
|
|
EXM_THROW(26, "Read error : I/O error");
|
|
}
|
|
if (fileSize != UTIL_FILESIZE_UNKNOWN && *readsize != fileSize) {
|
|
EXM_THROW(27, "Read error : Incomplete read : %llu / %llu B",
|
|
(unsigned long long)*readsize, (unsigned long long)fileSize);
|
|
}
|
|
|
|
return compressedfilesize;
|
|
}
|
|
|
|
/*! FIO_compressFilename_internal() :
|
|
* same as FIO_compressFilename_extRess(), with `ress.desFile` already opened.
|
|
* @return : 0 : compression completed correctly,
|
|
* 1 : missing or pb opening srcFileName
|
|
*/
|
|
static int
|
|
FIO_compressFilename_internal(FIO_prefs_t* const prefs,
|
|
cRess_t ress,
|
|
const char* dstFileName, const char* srcFileName,
|
|
int compressionLevel)
|
|
{
|
|
UTIL_time_t const timeStart = UTIL_getTime();
|
|
clock_t const cpuStart = clock();
|
|
U64 readsize = 0;
|
|
U64 compressedfilesize = 0;
|
|
U64 const fileSize = UTIL_getFileSize(srcFileName);
|
|
DISPLAYLEVEL(5, "%s: %u bytes \n", srcFileName, (unsigned)fileSize);
|
|
|
|
/* compression format selection */
|
|
switch (prefs->compressionType) {
|
|
default:
|
|
case FIO_zstdCompression:
|
|
compressedfilesize = FIO_compressZstdFrame(prefs, &ress, srcFileName, fileSize, compressionLevel, &readsize);
|
|
break;
|
|
|
|
case FIO_gzipCompression:
|
|
#ifdef ZSTD_GZCOMPRESS
|
|
compressedfilesize = FIO_compressGzFrame(&ress, srcFileName, fileSize, compressionLevel, &readsize);
|
|
#else
|
|
(void)compressionLevel;
|
|
EXM_THROW(20, "zstd: %s: file cannot be compressed as gzip (zstd compiled without ZSTD_GZCOMPRESS) -- ignored \n",
|
|
srcFileName);
|
|
#endif
|
|
break;
|
|
|
|
case FIO_xzCompression:
|
|
case FIO_lzmaCompression:
|
|
#ifdef ZSTD_LZMACOMPRESS
|
|
compressedfilesize = FIO_compressLzmaFrame(&ress, srcFileName, fileSize, compressionLevel, &readsize, prefs->compressionType==FIO_lzmaCompression);
|
|
#else
|
|
(void)compressionLevel;
|
|
EXM_THROW(20, "zstd: %s: file cannot be compressed as xz/lzma (zstd compiled without ZSTD_LZMACOMPRESS) -- ignored \n",
|
|
srcFileName);
|
|
#endif
|
|
break;
|
|
|
|
case FIO_lz4Compression:
|
|
#ifdef ZSTD_LZ4COMPRESS
|
|
compressedfilesize = FIO_compressLz4Frame(&ress, srcFileName, fileSize, compressionLevel, prefs->checksumFlag, &readsize);
|
|
#else
|
|
(void)compressionLevel;
|
|
EXM_THROW(20, "zstd: %s: file cannot be compressed as lz4 (zstd compiled without ZSTD_LZ4COMPRESS) -- ignored \n",
|
|
srcFileName);
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
/* Status */
|
|
DISPLAYLEVEL(2, "\r%79s\r", "");
|
|
if (readsize == 0) {
|
|
DISPLAYLEVEL(2,"%-20s : (%6llu => %6llu bytes, %s) \n",
|
|
srcFileName,
|
|
(unsigned long long)readsize, (unsigned long long) compressedfilesize,
|
|
dstFileName);
|
|
} else {
|
|
DISPLAYLEVEL(2,"%-20s :%6.2f%% (%6llu => %6llu bytes, %s) \n",
|
|
srcFileName,
|
|
(double)compressedfilesize / readsize * 100,
|
|
(unsigned long long)readsize, (unsigned long long) compressedfilesize,
|
|
dstFileName);
|
|
}
|
|
|
|
/* Elapsed Time and CPU Load */
|
|
{ clock_t const cpuEnd = clock();
|
|
double const cpuLoad_s = (double)(cpuEnd - cpuStart) / CLOCKS_PER_SEC;
|
|
U64 const timeLength_ns = UTIL_clockSpanNano(timeStart);
|
|
double const timeLength_s = (double)timeLength_ns / 1000000000;
|
|
double const cpuLoad_pct = (cpuLoad_s / timeLength_s) * 100;
|
|
DISPLAYLEVEL(4, "%-20s : Completed in %.2f sec (cpu load : %.0f%%)\n",
|
|
srcFileName, timeLength_s, cpuLoad_pct);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*! FIO_compressFilename_dstFile() :
|
|
* open dstFileName, or pass-through if ress.dstFile != NULL,
|
|
* then start compression with FIO_compressFilename_internal().
|
|
* Manages source removal (--rm) and file permissions transfer.
|
|
* note : ress.srcFile must be != NULL,
|
|
* so reach this function through FIO_compressFilename_srcFile().
|
|
* @return : 0 : compression completed correctly,
|
|
* 1 : pb
|
|
*/
|
|
static int FIO_compressFilename_dstFile(FIO_prefs_t* const prefs,
|
|
cRess_t ress,
|
|
const char* dstFileName,
|
|
const char* srcFileName,
|
|
int compressionLevel)
|
|
{
|
|
int closeDstFile = 0;
|
|
int result;
|
|
stat_t statbuf;
|
|
int transfer_permissions = 0;
|
|
assert(ress.srcFile != NULL);
|
|
if (ress.dstFile == NULL) {
|
|
closeDstFile = 1;
|
|
DISPLAYLEVEL(6, "FIO_compressFilename_dstFile: opening dst: %s \n", dstFileName);
|
|
ress.dstFile = FIO_openDstFile(prefs, srcFileName, dstFileName);
|
|
if (ress.dstFile==NULL) return 1; /* could not open dstFileName */
|
|
/* Must only be added after FIO_openDstFile() succeeds.
|
|
* Otherwise we may delete the destination file if it already exists,
|
|
* and the user presses Ctrl-C when asked if they wish to overwrite.
|
|
*/
|
|
addHandler(dstFileName);
|
|
|
|
if ( strcmp (srcFileName, stdinmark)
|
|
&& UTIL_getFileStat(srcFileName, &statbuf))
|
|
transfer_permissions = 1;
|
|
}
|
|
|
|
result = FIO_compressFilename_internal(prefs, ress, dstFileName, srcFileName, compressionLevel);
|
|
|
|
if (closeDstFile) {
|
|
FILE* const dstFile = ress.dstFile;
|
|
ress.dstFile = NULL;
|
|
|
|
clearHandler();
|
|
|
|
DISPLAYLEVEL(6, "FIO_compressFilename_dstFile: closing dst: %s \n", dstFileName);
|
|
if (fclose(dstFile)) { /* error closing dstFile */
|
|
DISPLAYLEVEL(1, "zstd: %s: %s \n", dstFileName, strerror(errno));
|
|
result=1;
|
|
}
|
|
if ( (result != 0) /* operation failure */
|
|
&& strcmp(dstFileName, nulmark) /* special case : don't remove() /dev/null */
|
|
&& strcmp(dstFileName, stdoutmark) /* special case : don't remove() stdout */
|
|
) {
|
|
FIO_remove(dstFileName); /* remove compression artefact; note don't do anything special if remove() fails */
|
|
} else if ( strcmp(dstFileName, stdoutmark)
|
|
&& strcmp(dstFileName, nulmark)
|
|
&& transfer_permissions) {
|
|
DISPLAYLEVEL(6, "FIO_compressFilename_dstFile: transfering permissions into dst: %s \n", dstFileName);
|
|
UTIL_setFileStat(dstFileName, &statbuf);
|
|
} else {
|
|
DISPLAYLEVEL(6, "FIO_compressFilename_dstFile: do not transfer permissions into dst: %s \n", dstFileName);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* List used to compare file extensions (used with --exclude-compressed flag)
|
|
* Different from the suffixList and should only apply to ZSTD compress operationResult
|
|
*/
|
|
static const char *compressedFileExtensions[] = {
|
|
ZSTD_EXTENSION,
|
|
TZSTD_EXTENSION,
|
|
GZ_EXTENSION,
|
|
TGZ_EXTENSION,
|
|
LZMA_EXTENSION,
|
|
XZ_EXTENSION,
|
|
TXZ_EXTENSION,
|
|
LZ4_EXTENSION,
|
|
TLZ4_EXTENSION,
|
|
NULL
|
|
};
|
|
|
|
/*! FIO_compressFilename_srcFile() :
|
|
* @return : 0 : compression completed correctly,
|
|
* 1 : missing or pb opening srcFileName
|
|
*/
|
|
static int
|
|
FIO_compressFilename_srcFile(FIO_prefs_t* const prefs,
|
|
cRess_t ress,
|
|
const char* dstFileName,
|
|
const char* srcFileName,
|
|
int compressionLevel)
|
|
{
|
|
int result;
|
|
DISPLAYLEVEL(6, "FIO_compressFilename_srcFile: %s \n", srcFileName);
|
|
|
|
/* ensure src is not a directory */
|
|
if (UTIL_isDirectory(srcFileName)) {
|
|
DISPLAYLEVEL(1, "zstd: %s is a directory -- ignored \n", srcFileName);
|
|
return 1;
|
|
}
|
|
|
|
/* ensure src is not the same as dict (if present) */
|
|
if (ress.dictFileName != NULL && UTIL_isSameFile(srcFileName, ress.dictFileName)) {
|
|
DISPLAYLEVEL(1, "zstd: cannot use %s as an input file and dictionary \n", srcFileName);
|
|
return 1;
|
|
}
|
|
|
|
/* Check if "srcFile" is compressed. Only done if --exclude-compressed flag is used
|
|
* YES => ZSTD will skip compression of the file and will return 0.
|
|
* NO => ZSTD will resume with compress operation.
|
|
*/
|
|
if (prefs->excludeCompressedFiles == 1 && UTIL_isCompressedFile(srcFileName, compressedFileExtensions)) {
|
|
DISPLAYLEVEL(4, "File is already compressed : %s \n", srcFileName);
|
|
return 0;
|
|
}
|
|
|
|
ress.srcFile = FIO_openSrcFile(srcFileName);
|
|
if (ress.srcFile == NULL) return 1; /* srcFile could not be opened */
|
|
|
|
result = FIO_compressFilename_dstFile(prefs, ress, dstFileName, srcFileName, compressionLevel);
|
|
|
|
fclose(ress.srcFile);
|
|
ress.srcFile = NULL;
|
|
if ( prefs->removeSrcFile /* --rm */
|
|
&& result == 0 /* success */
|
|
&& strcmp(srcFileName, stdinmark) /* exception : don't erase stdin */
|
|
) {
|
|
/* We must clear the handler, since after this point calling it would
|
|
* delete both the source and destination files.
|
|
*/
|
|
clearHandler();
|
|
if (FIO_remove(srcFileName))
|
|
EXM_THROW(1, "zstd: %s: %s", srcFileName, strerror(errno));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
int FIO_compressFilename(FIO_prefs_t* const prefs, const char* dstFileName,
|
|
const char* srcFileName, const char* dictFileName,
|
|
int compressionLevel, ZSTD_compressionParameters comprParams)
|
|
{
|
|
cRess_t const ress = FIO_createCResources(prefs, dictFileName, UTIL_getFileSize(srcFileName), compressionLevel, comprParams);
|
|
int const result = FIO_compressFilename_srcFile(prefs, ress, dstFileName, srcFileName, compressionLevel);
|
|
|
|
|
|
FIO_freeCResources(ress);
|
|
return result;
|
|
}
|
|
|
|
/* FIO_determineCompressedName() :
|
|
* create a destination filename for compressed srcFileName.
|
|
* @return a pointer to it.
|
|
* This function never returns an error (it may abort() in case of pb)
|
|
*/
|
|
static const char*
|
|
FIO_determineCompressedName(const char* srcFileName, const char* outDirName, const char* suffix)
|
|
{
|
|
static size_t dfnbCapacity = 0;
|
|
static char* dstFileNameBuffer = NULL; /* using static allocation : this function cannot be multi-threaded */
|
|
char* outDirFilename = NULL;
|
|
size_t sfnSize = strlen(srcFileName);
|
|
size_t const srcSuffixLen = strlen(suffix);
|
|
if (outDirName) {
|
|
outDirFilename = FIO_createFilename_fromOutDir(srcFileName, outDirName, srcSuffixLen);
|
|
sfnSize = strlen(outDirFilename);
|
|
assert(outDirFilename != NULL);
|
|
}
|
|
|
|
if (dfnbCapacity <= sfnSize+srcSuffixLen+1) {
|
|
/* resize buffer for dstName */
|
|
free(dstFileNameBuffer);
|
|
dfnbCapacity = sfnSize + srcSuffixLen + 30;
|
|
dstFileNameBuffer = (char*)malloc(dfnbCapacity);
|
|
if (!dstFileNameBuffer) {
|
|
EXM_THROW(30, "zstd: %s", strerror(errno));
|
|
}
|
|
}
|
|
assert(dstFileNameBuffer != NULL);
|
|
|
|
if (outDirFilename) {
|
|
memcpy(dstFileNameBuffer, outDirFilename, sfnSize);
|
|
free(outDirFilename);
|
|
} else {
|
|
memcpy(dstFileNameBuffer, srcFileName, sfnSize);
|
|
}
|
|
memcpy(dstFileNameBuffer+sfnSize, suffix, srcSuffixLen+1 /* Include terminating null */);
|
|
return dstFileNameBuffer;
|
|
}
|
|
|
|
static unsigned long long FIO_getLargestFileSize(const char** inFileNames, unsigned nbFiles)
|
|
{
|
|
size_t i;
|
|
unsigned long long fileSize, maxFileSize = 0;
|
|
for (i = 0; i < nbFiles; i++) {
|
|
fileSize = UTIL_getFileSize(inFileNames[i]);
|
|
maxFileSize = fileSize > maxFileSize ? fileSize : maxFileSize;
|
|
}
|
|
return maxFileSize;
|
|
}
|
|
|
|
/* FIO_compressMultipleFilenames() :
|
|
* compress nbFiles files
|
|
* into either one destination (outFileName),
|
|
* or into one file each (outFileName == NULL, but suffix != NULL),
|
|
* or into a destination folder (specified with -O)
|
|
*/
|
|
int FIO_compressMultipleFilenames(FIO_prefs_t* const prefs,
|
|
const char** inFileNamesTable, unsigned nbFiles,
|
|
const char* outDirName,
|
|
const char* outFileName, const char* suffix,
|
|
const char* dictFileName, int compressionLevel,
|
|
ZSTD_compressionParameters comprParams)
|
|
{
|
|
int error = 0;
|
|
cRess_t ress = FIO_createCResources(prefs, dictFileName,
|
|
FIO_getLargestFileSize(inFileNamesTable, nbFiles),
|
|
compressionLevel, comprParams);
|
|
|
|
/* init */
|
|
assert(outFileName != NULL || suffix != NULL);
|
|
if (outFileName != NULL) { /* output into a single destination (stdout typically) */
|
|
ress.dstFile = FIO_openDstFile(prefs, NULL, outFileName);
|
|
if (ress.dstFile == NULL) { /* could not open outFileName */
|
|
error = 1;
|
|
} else {
|
|
unsigned u;
|
|
for (u=0; u<nbFiles; u++)
|
|
error |= FIO_compressFilename_srcFile(prefs, ress, outFileName, inFileNamesTable[u], compressionLevel);
|
|
if (fclose(ress.dstFile))
|
|
EXM_THROW(29, "Write error (%s) : cannot properly close %s",
|
|
strerror(errno), outFileName);
|
|
ress.dstFile = NULL;
|
|
}
|
|
} else {
|
|
unsigned u;
|
|
for (u=0; u<nbFiles; u++) {
|
|
const char* const srcFileName = inFileNamesTable[u];
|
|
const char* const dstFileName = FIO_determineCompressedName(srcFileName, outDirName, suffix); /* cannot fail */
|
|
error |= FIO_compressFilename_srcFile(prefs, ress, dstFileName, srcFileName, compressionLevel);
|
|
}
|
|
if (outDirName)
|
|
FIO_checkFilenameCollisions(inFileNamesTable ,nbFiles);
|
|
}
|
|
|
|
FIO_freeCResources(ress);
|
|
return error;
|
|
}
|
|
|
|
#endif /* #ifndef ZSTD_NOCOMPRESS */
|
|
|
|
|
|
|
|
#ifndef ZSTD_NODECOMPRESS
|
|
|
|
/* **************************************************************************
|
|
* Decompression
|
|
***************************************************************************/
|
|
typedef struct {
|
|
void* srcBuffer;
|
|
size_t srcBufferSize;
|
|
size_t srcBufferLoaded;
|
|
void* dstBuffer;
|
|
size_t dstBufferSize;
|
|
ZSTD_DStream* dctx;
|
|
FILE* dstFile;
|
|
} dRess_t;
|
|
|
|
static dRess_t FIO_createDResources(FIO_prefs_t* const prefs, const char* dictFileName)
|
|
{
|
|
dRess_t ress;
|
|
memset(&ress, 0, sizeof(ress));
|
|
|
|
if (prefs->patchFromMode)
|
|
FIO_adjustMemLimitForPatchFromMode(prefs, UTIL_getFileSize(dictFileName), 0 /* just use the dict size */);
|
|
|
|
/* Allocation */
|
|
ress.dctx = ZSTD_createDStream();
|
|
if (ress.dctx==NULL)
|
|
EXM_THROW(60, "Error: %s : can't create ZSTD_DStream", strerror(errno));
|
|
CHECK( ZSTD_DCtx_setMaxWindowSize(ress.dctx, prefs->memLimit) );
|
|
ress.srcBufferSize = ZSTD_DStreamInSize();
|
|
ress.srcBuffer = malloc(ress.srcBufferSize);
|
|
ress.dstBufferSize = ZSTD_DStreamOutSize();
|
|
ress.dstBuffer = malloc(ress.dstBufferSize);
|
|
if (!ress.srcBuffer || !ress.dstBuffer)
|
|
EXM_THROW(61, "Allocation error : not enough memory");
|
|
|
|
/* dictionary */
|
|
{ void* dictBuffer;
|
|
size_t const dictBufferSize = FIO_createDictBuffer(&dictBuffer, dictFileName, prefs);
|
|
CHECK( ZSTD_initDStream_usingDict(ress.dctx, dictBuffer, dictBufferSize) );
|
|
free(dictBuffer);
|
|
}
|
|
|
|
return ress;
|
|
}
|
|
|
|
static void FIO_freeDResources(dRess_t ress)
|
|
{
|
|
CHECK( ZSTD_freeDStream(ress.dctx) );
|
|
free(ress.srcBuffer);
|
|
free(ress.dstBuffer);
|
|
}
|
|
|
|
|
|
/** FIO_fwriteSparse() :
|
|
* @return : storedSkips,
|
|
* argument for next call to FIO_fwriteSparse() or FIO_fwriteSparseEnd() */
|
|
static unsigned
|
|
FIO_fwriteSparse(FILE* file,
|
|
const void* buffer, size_t bufferSize,
|
|
const FIO_prefs_t* const prefs,
|
|
unsigned storedSkips)
|
|
{
|
|
const size_t* const bufferT = (const size_t*)buffer; /* Buffer is supposed malloc'ed, hence aligned on size_t */
|
|
size_t bufferSizeT = bufferSize / sizeof(size_t);
|
|
const size_t* const bufferTEnd = bufferT + bufferSizeT;
|
|
const size_t* ptrT = bufferT;
|
|
static const size_t segmentSizeT = (32 KB) / sizeof(size_t); /* check every 32 KB */
|
|
|
|
if (prefs->testMode) return 0; /* do not output anything in test mode */
|
|
|
|
if (!prefs->sparseFileSupport) { /* normal write */
|
|
size_t const sizeCheck = fwrite(buffer, 1, bufferSize, file);
|
|
if (sizeCheck != bufferSize)
|
|
EXM_THROW(70, "Write error : cannot write decoded block : %s",
|
|
strerror(errno));
|
|
return 0;
|
|
}
|
|
|
|
/* avoid int overflow */
|
|
if (storedSkips > 1 GB) {
|
|
if (LONG_SEEK(file, 1 GB, SEEK_CUR) != 0)
|
|
EXM_THROW(91, "1 GB skip error (sparse file support)");
|
|
storedSkips -= 1 GB;
|
|
}
|
|
|
|
while (ptrT < bufferTEnd) {
|
|
size_t nb0T;
|
|
|
|
/* adjust last segment if < 32 KB */
|
|
size_t seg0SizeT = segmentSizeT;
|
|
if (seg0SizeT > bufferSizeT) seg0SizeT = bufferSizeT;
|
|
bufferSizeT -= seg0SizeT;
|
|
|
|
/* count leading zeroes */
|
|
for (nb0T=0; (nb0T < seg0SizeT) && (ptrT[nb0T] == 0); nb0T++) ;
|
|
storedSkips += (unsigned)(nb0T * sizeof(size_t));
|
|
|
|
if (nb0T != seg0SizeT) { /* not all 0s */
|
|
size_t const nbNon0ST = seg0SizeT - nb0T;
|
|
/* skip leading zeros */
|
|
if (LONG_SEEK(file, storedSkips, SEEK_CUR) != 0)
|
|
EXM_THROW(92, "Sparse skip error ; try --no-sparse");
|
|
storedSkips = 0;
|
|
/* write the rest */
|
|
if (fwrite(ptrT + nb0T, sizeof(size_t), nbNon0ST, file) != nbNon0ST)
|
|
EXM_THROW(93, "Write error : cannot write decoded block : %s",
|
|
strerror(errno));
|
|
}
|
|
ptrT += seg0SizeT;
|
|
}
|
|
|
|
{ static size_t const maskT = sizeof(size_t)-1;
|
|
if (bufferSize & maskT) {
|
|
/* size not multiple of sizeof(size_t) : implies end of block */
|
|
const char* const restStart = (const char*)bufferTEnd;
|
|
const char* restPtr = restStart;
|
|
const char* const restEnd = (const char*)buffer + bufferSize;
|
|
assert(restEnd > restStart && restEnd < restStart + sizeof(size_t));
|
|
for ( ; (restPtr < restEnd) && (*restPtr == 0); restPtr++) ;
|
|
storedSkips += (unsigned) (restPtr - restStart);
|
|
if (restPtr != restEnd) {
|
|
/* not all remaining bytes are 0 */
|
|
size_t const restSize = (size_t)(restEnd - restPtr);
|
|
if (LONG_SEEK(file, storedSkips, SEEK_CUR) != 0)
|
|
EXM_THROW(92, "Sparse skip error ; try --no-sparse");
|
|
if (fwrite(restPtr, 1, restSize, file) != restSize)
|
|
EXM_THROW(95, "Write error : cannot write end of decoded block : %s",
|
|
strerror(errno));
|
|
storedSkips = 0;
|
|
} } }
|
|
|
|
return storedSkips;
|
|
}
|
|
|
|
static void
|
|
FIO_fwriteSparseEnd(const FIO_prefs_t* const prefs, FILE* file, unsigned storedSkips)
|
|
{
|
|
if (prefs->testMode) assert(storedSkips == 0);
|
|
if (storedSkips>0) {
|
|
assert(prefs->sparseFileSupport > 0); /* storedSkips>0 implies sparse support is enabled */
|
|
(void)prefs; /* assert can be disabled, in which case prefs becomes unused */
|
|
if (LONG_SEEK(file, storedSkips-1, SEEK_CUR) != 0)
|
|
EXM_THROW(69, "Final skip error (sparse file support)");
|
|
/* last zero must be explicitly written,
|
|
* so that skipped ones get implicitly translated as zero by FS */
|
|
{ const char lastZeroByte[1] = { 0 };
|
|
if (fwrite(lastZeroByte, 1, 1, file) != 1)
|
|
EXM_THROW(69, "Write error : cannot write last zero : %s", strerror(errno));
|
|
} }
|
|
}
|
|
|
|
|
|
/** FIO_passThrough() : just copy input into output, for compatibility with gzip -df mode
|
|
@return : 0 (no error) */
|
|
static int FIO_passThrough(const FIO_prefs_t* const prefs,
|
|
FILE* foutput, FILE* finput,
|
|
void* buffer, size_t bufferSize,
|
|
size_t alreadyLoaded)
|
|
{
|
|
size_t const blockSize = MIN(64 KB, bufferSize);
|
|
size_t readFromInput;
|
|
unsigned storedSkips = 0;
|
|
|
|
/* assumption : ress->srcBufferLoaded bytes already loaded and stored within buffer */
|
|
{ size_t const sizeCheck = fwrite(buffer, 1, alreadyLoaded, foutput);
|
|
if (sizeCheck != alreadyLoaded) {
|
|
DISPLAYLEVEL(1, "Pass-through write error : %s\n", strerror(errno));
|
|
return 1;
|
|
} }
|
|
|
|
do {
|
|
readFromInput = fread(buffer, 1, blockSize, finput);
|
|
storedSkips = FIO_fwriteSparse(foutput, buffer, readFromInput, prefs, storedSkips);
|
|
} while (readFromInput == blockSize);
|
|
if (ferror(finput)) {
|
|
DISPLAYLEVEL(1, "Pass-through read error : %s\n", strerror(errno));
|
|
return 1;
|
|
}
|
|
assert(feof(finput));
|
|
|
|
FIO_fwriteSparseEnd(prefs, foutput, storedSkips);
|
|
return 0;
|
|
}
|
|
|
|
/* FIO_zstdErrorHelp() :
|
|
* detailed error message when requested window size is too large */
|
|
static void
|
|
FIO_zstdErrorHelp(const FIO_prefs_t* const prefs,
|
|
const dRess_t* ress,
|
|
size_t err, const char* srcFileName)
|
|
{
|
|
ZSTD_frameHeader header;
|
|
|
|
/* Help message only for one specific error */
|
|
if (ZSTD_getErrorCode(err) != ZSTD_error_frameParameter_windowTooLarge)
|
|
return;
|
|
|
|
/* Try to decode the frame header */
|
|
err = ZSTD_getFrameHeader(&header, ress->srcBuffer, ress->srcBufferLoaded);
|
|
if (err == 0) {
|
|
unsigned long long const windowSize = header.windowSize;
|
|
unsigned const windowLog = FIO_highbit64(windowSize) + ((windowSize & (windowSize - 1)) != 0);
|
|
assert(prefs->memLimit > 0);
|
|
DISPLAYLEVEL(1, "%s : Window size larger than maximum : %llu > %u \n",
|
|
srcFileName, windowSize, prefs->memLimit);
|
|
if (windowLog <= ZSTD_WINDOWLOG_MAX) {
|
|
unsigned const windowMB = (unsigned)((windowSize >> 20) + ((windowSize & ((1 MB) - 1)) != 0));
|
|
assert(windowSize < (U64)(1ULL << 52)); /* ensure now overflow for windowMB */
|
|
DISPLAYLEVEL(1, "%s : Use --long=%u or --memory=%uMB \n",
|
|
srcFileName, windowLog, windowMB);
|
|
return;
|
|
} }
|
|
DISPLAYLEVEL(1, "%s : Window log larger than ZSTD_WINDOWLOG_MAX=%u; not supported \n",
|
|
srcFileName, ZSTD_WINDOWLOG_MAX);
|
|
}
|
|
|
|
/** FIO_decompressFrame() :
|
|
* @return : size of decoded zstd frame, or an error code
|
|
*/
|
|
#define FIO_ERROR_FRAME_DECODING ((unsigned long long)(-2))
|
|
static unsigned long long
|
|
FIO_decompressZstdFrame(dRess_t* ress, FILE* finput,
|
|
const FIO_prefs_t* const prefs,
|
|
const char* srcFileName,
|
|
U64 alreadyDecoded) /* for multi-frames streams */
|
|
{
|
|
U64 frameSize = 0;
|
|
U32 storedSkips = 0;
|
|
|
|
/* display last 20 characters only */
|
|
{ size_t const srcFileLength = strlen(srcFileName);
|
|
if (srcFileLength>20) srcFileName += srcFileLength-20;
|
|
}
|
|
|
|
ZSTD_resetDStream(ress->dctx);
|
|
|
|
/* Header loading : ensures ZSTD_getFrameHeader() will succeed */
|
|
{ size_t const toDecode = ZSTD_FRAMEHEADERSIZE_MAX;
|
|
if (ress->srcBufferLoaded < toDecode) {
|
|
size_t const toRead = toDecode - ress->srcBufferLoaded;
|
|
void* const startPosition = (char*)ress->srcBuffer + ress->srcBufferLoaded;
|
|
ress->srcBufferLoaded += fread(startPosition, 1, toRead, finput);
|
|
} }
|
|
|
|
/* Main decompression Loop */
|
|
while (1) {
|
|
ZSTD_inBuffer inBuff = { ress->srcBuffer, ress->srcBufferLoaded, 0 };
|
|
ZSTD_outBuffer outBuff= { ress->dstBuffer, ress->dstBufferSize, 0 };
|
|
size_t const readSizeHint = ZSTD_decompressStream(ress->dctx, &outBuff, &inBuff);
|
|
if (ZSTD_isError(readSizeHint)) {
|
|
DISPLAYLEVEL(1, "%s : Decoding error (36) : %s \n",
|
|
srcFileName, ZSTD_getErrorName(readSizeHint));
|
|
FIO_zstdErrorHelp(prefs, ress, readSizeHint, srcFileName);
|
|
return FIO_ERROR_FRAME_DECODING;
|
|
}
|
|
|
|
/* Write block */
|
|
storedSkips = FIO_fwriteSparse(ress->dstFile, ress->dstBuffer, outBuff.pos, prefs, storedSkips);
|
|
frameSize += outBuff.pos;
|
|
DISPLAYUPDATE(2, "\r%-20.20s : %u MB... ",
|
|
srcFileName, (unsigned)((alreadyDecoded+frameSize)>>20) );
|
|
|
|
if (inBuff.pos > 0) {
|
|
memmove(ress->srcBuffer, (char*)ress->srcBuffer + inBuff.pos, inBuff.size - inBuff.pos);
|
|
ress->srcBufferLoaded -= inBuff.pos;
|
|
}
|
|
|
|
if (readSizeHint == 0) break; /* end of frame */
|
|
|
|
/* Fill input buffer */
|
|
{ size_t const toDecode = MIN(readSizeHint, ress->srcBufferSize); /* support large skippable frames */
|
|
if (ress->srcBufferLoaded < toDecode) {
|
|
size_t const toRead = toDecode - ress->srcBufferLoaded; /* > 0 */
|
|
void* const startPosition = (char*)ress->srcBuffer + ress->srcBufferLoaded;
|
|
size_t const readSize = fread(startPosition, 1, toRead, finput);
|
|
if (readSize==0) {
|
|
DISPLAYLEVEL(1, "%s : Read error (39) : premature end \n",
|
|
srcFileName);
|
|
return FIO_ERROR_FRAME_DECODING;
|
|
}
|
|
ress->srcBufferLoaded += readSize;
|
|
} } }
|
|
|
|
FIO_fwriteSparseEnd(prefs, ress->dstFile, storedSkips);
|
|
|
|
return frameSize;
|
|
}
|
|
|
|
|
|
#ifdef ZSTD_GZDECOMPRESS
|
|
static unsigned long long
|
|
FIO_decompressGzFrame(dRess_t* ress, FILE* srcFile,
|
|
const FIO_prefs_t* const prefs,
|
|
const char* srcFileName)
|
|
{
|
|
unsigned long long outFileSize = 0;
|
|
z_stream strm;
|
|
int flush = Z_NO_FLUSH;
|
|
int decodingError = 0;
|
|
unsigned storedSkips = 0;
|
|
|
|
strm.zalloc = Z_NULL;
|
|
strm.zfree = Z_NULL;
|
|
strm.opaque = Z_NULL;
|
|
strm.next_in = 0;
|
|
strm.avail_in = 0;
|
|
/* see http://www.zlib.net/manual.html */
|
|
if (inflateInit2(&strm, 15 /* maxWindowLogSize */ + 16 /* gzip only */) != Z_OK)
|
|
return FIO_ERROR_FRAME_DECODING;
|
|
|
|
strm.next_out = (Bytef*)ress->dstBuffer;
|
|
strm.avail_out = (uInt)ress->dstBufferSize;
|
|
strm.avail_in = (uInt)ress->srcBufferLoaded;
|
|
strm.next_in = (z_const unsigned char*)ress->srcBuffer;
|
|
|
|
for ( ; ; ) {
|
|
int ret;
|
|
if (strm.avail_in == 0) {
|
|
ress->srcBufferLoaded = fread(ress->srcBuffer, 1, ress->srcBufferSize, srcFile);
|
|
if (ress->srcBufferLoaded == 0) flush = Z_FINISH;
|
|
strm.next_in = (z_const unsigned char*)ress->srcBuffer;
|
|
strm.avail_in = (uInt)ress->srcBufferLoaded;
|
|
}
|
|
ret = inflate(&strm, flush);
|
|
if (ret == Z_BUF_ERROR) {
|
|
DISPLAYLEVEL(1, "zstd: %s: premature gz end \n", srcFileName);
|
|
decodingError = 1; break;
|
|
}
|
|
if (ret != Z_OK && ret != Z_STREAM_END) {
|
|
DISPLAYLEVEL(1, "zstd: %s: inflate error %d \n", srcFileName, ret);
|
|
decodingError = 1; break;
|
|
}
|
|
{ size_t const decompBytes = ress->dstBufferSize - strm.avail_out;
|
|
if (decompBytes) {
|
|
storedSkips = FIO_fwriteSparse(ress->dstFile, ress->dstBuffer, decompBytes, prefs, storedSkips);
|
|
outFileSize += decompBytes;
|
|
strm.next_out = (Bytef*)ress->dstBuffer;
|
|
strm.avail_out = (uInt)ress->dstBufferSize;
|
|
}
|
|
}
|
|
if (ret == Z_STREAM_END) break;
|
|
}
|
|
|
|
if (strm.avail_in > 0)
|
|
memmove(ress->srcBuffer, strm.next_in, strm.avail_in);
|
|
ress->srcBufferLoaded = strm.avail_in;
|
|
if ( (inflateEnd(&strm) != Z_OK) /* release resources ; error detected */
|
|
&& (decodingError==0) ) {
|
|
DISPLAYLEVEL(1, "zstd: %s: inflateEnd error \n", srcFileName);
|
|
decodingError = 1;
|
|
}
|
|
FIO_fwriteSparseEnd(prefs, ress->dstFile, storedSkips);
|
|
return decodingError ? FIO_ERROR_FRAME_DECODING : outFileSize;
|
|
}
|
|
#endif
|
|
|
|
|
|
#ifdef ZSTD_LZMADECOMPRESS
|
|
static unsigned long long
|
|
FIO_decompressLzmaFrame(dRess_t* ress, FILE* srcFile,
|
|
const FIO_prefs_t* const prefs,
|
|
const char* srcFileName, int plain_lzma)
|
|
{
|
|
unsigned long long outFileSize = 0;
|
|
lzma_stream strm = LZMA_STREAM_INIT;
|
|
lzma_action action = LZMA_RUN;
|
|
lzma_ret initRet;
|
|
int decodingError = 0;
|
|
unsigned storedSkips = 0;
|
|
|
|
strm.next_in = 0;
|
|
strm.avail_in = 0;
|
|
if (plain_lzma) {
|
|
initRet = lzma_alone_decoder(&strm, UINT64_MAX); /* LZMA */
|
|
} else {
|
|
initRet = lzma_stream_decoder(&strm, UINT64_MAX, 0); /* XZ */
|
|
}
|
|
|
|
if (initRet != LZMA_OK) {
|
|
DISPLAYLEVEL(1, "zstd: %s: %s error %d \n",
|
|
plain_lzma ? "lzma_alone_decoder" : "lzma_stream_decoder",
|
|
srcFileName, initRet);
|
|
return FIO_ERROR_FRAME_DECODING;
|
|
}
|
|
|
|
strm.next_out = (BYTE*)ress->dstBuffer;
|
|
strm.avail_out = ress->dstBufferSize;
|
|
strm.next_in = (BYTE const*)ress->srcBuffer;
|
|
strm.avail_in = ress->srcBufferLoaded;
|
|
|
|
for ( ; ; ) {
|
|
lzma_ret ret;
|
|
if (strm.avail_in == 0) {
|
|
ress->srcBufferLoaded = fread(ress->srcBuffer, 1, ress->srcBufferSize, srcFile);
|
|
if (ress->srcBufferLoaded == 0) action = LZMA_FINISH;
|
|
strm.next_in = (BYTE const*)ress->srcBuffer;
|
|
strm.avail_in = ress->srcBufferLoaded;
|
|
}
|
|
ret = lzma_code(&strm, action);
|
|
|
|
if (ret == LZMA_BUF_ERROR) {
|
|
DISPLAYLEVEL(1, "zstd: %s: premature lzma end \n", srcFileName);
|
|
decodingError = 1; break;
|
|
}
|
|
if (ret != LZMA_OK && ret != LZMA_STREAM_END) {
|
|
DISPLAYLEVEL(1, "zstd: %s: lzma_code decoding error %d \n",
|
|
srcFileName, ret);
|
|
decodingError = 1; break;
|
|
}
|
|
{ size_t const decompBytes = ress->dstBufferSize - strm.avail_out;
|
|
if (decompBytes) {
|
|
storedSkips = FIO_fwriteSparse(ress->dstFile, ress->dstBuffer, decompBytes, prefs, storedSkips);
|
|
outFileSize += decompBytes;
|
|
strm.next_out = (BYTE*)ress->dstBuffer;
|
|
strm.avail_out = ress->dstBufferSize;
|
|
} }
|
|
if (ret == LZMA_STREAM_END) break;
|
|
}
|
|
|
|
if (strm.avail_in > 0)
|
|
memmove(ress->srcBuffer, strm.next_in, strm.avail_in);
|
|
ress->srcBufferLoaded = strm.avail_in;
|
|
lzma_end(&strm);
|
|
FIO_fwriteSparseEnd(prefs, ress->dstFile, storedSkips);
|
|
return decodingError ? FIO_ERROR_FRAME_DECODING : outFileSize;
|
|
}
|
|
#endif
|
|
|
|
#ifdef ZSTD_LZ4DECOMPRESS
|
|
static unsigned long long
|
|
FIO_decompressLz4Frame(dRess_t* ress, FILE* srcFile,
|
|
const FIO_prefs_t* const prefs,
|
|
const char* srcFileName)
|
|
{
|
|
unsigned long long filesize = 0;
|
|
LZ4F_errorCode_t nextToLoad;
|
|
LZ4F_decompressionContext_t dCtx;
|
|
LZ4F_errorCode_t const errorCode = LZ4F_createDecompressionContext(&dCtx, LZ4F_VERSION);
|
|
int decodingError = 0;
|
|
unsigned storedSkips = 0;
|
|
|
|
if (LZ4F_isError(errorCode)) {
|
|
DISPLAYLEVEL(1, "zstd: failed to create lz4 decompression context \n");
|
|
return FIO_ERROR_FRAME_DECODING;
|
|
}
|
|
|
|
/* Init feed with magic number (already consumed from FILE* sFile) */
|
|
{ size_t inSize = 4;
|
|
size_t outSize= 0;
|
|
MEM_writeLE32(ress->srcBuffer, LZ4_MAGICNUMBER);
|
|
nextToLoad = LZ4F_decompress(dCtx, ress->dstBuffer, &outSize, ress->srcBuffer, &inSize, NULL);
|
|
if (LZ4F_isError(nextToLoad)) {
|
|
DISPLAYLEVEL(1, "zstd: %s: lz4 header error : %s \n",
|
|
srcFileName, LZ4F_getErrorName(nextToLoad));
|
|
LZ4F_freeDecompressionContext(dCtx);
|
|
return FIO_ERROR_FRAME_DECODING;
|
|
} }
|
|
|
|
/* Main Loop */
|
|
for (;nextToLoad;) {
|
|
size_t readSize;
|
|
size_t pos = 0;
|
|
size_t decodedBytes = ress->dstBufferSize;
|
|
|
|
/* Read input */
|
|
if (nextToLoad > ress->srcBufferSize) nextToLoad = ress->srcBufferSize;
|
|
readSize = fread(ress->srcBuffer, 1, nextToLoad, srcFile);
|
|
if (!readSize) break; /* reached end of file or stream */
|
|
|
|
while ((pos < readSize) || (decodedBytes == ress->dstBufferSize)) { /* still to read, or still to flush */
|
|
/* Decode Input (at least partially) */
|
|
size_t remaining = readSize - pos;
|
|
decodedBytes = ress->dstBufferSize;
|
|
nextToLoad = LZ4F_decompress(dCtx, ress->dstBuffer, &decodedBytes, (char*)(ress->srcBuffer)+pos, &remaining, NULL);
|
|
if (LZ4F_isError(nextToLoad)) {
|
|
DISPLAYLEVEL(1, "zstd: %s: lz4 decompression error : %s \n",
|
|
srcFileName, LZ4F_getErrorName(nextToLoad));
|
|
decodingError = 1; nextToLoad = 0; break;
|
|
}
|
|
pos += remaining;
|
|
|
|
/* Write Block */
|
|
if (decodedBytes) {
|
|
storedSkips = FIO_fwriteSparse(ress->dstFile, ress->dstBuffer, decodedBytes, prefs, storedSkips);
|
|
filesize += decodedBytes;
|
|
DISPLAYUPDATE(2, "\rDecompressed : %u MB ", (unsigned)(filesize>>20));
|
|
}
|
|
|
|
if (!nextToLoad) break;
|
|
}
|
|
}
|
|
/* can be out because readSize == 0, which could be an fread() error */
|
|
if (ferror(srcFile)) {
|
|
DISPLAYLEVEL(1, "zstd: %s: read error \n", srcFileName);
|
|
decodingError=1;
|
|
}
|
|
|
|
if (nextToLoad!=0) {
|
|
DISPLAYLEVEL(1, "zstd: %s: unfinished lz4 stream \n", srcFileName);
|
|
decodingError=1;
|
|
}
|
|
|
|
LZ4F_freeDecompressionContext(dCtx);
|
|
ress->srcBufferLoaded = 0; /* LZ4F will reach exact frame boundary */
|
|
FIO_fwriteSparseEnd(prefs, ress->dstFile, storedSkips);
|
|
|
|
return decodingError ? FIO_ERROR_FRAME_DECODING : filesize;
|
|
}
|
|
#endif
|
|
|
|
|
|
|
|
/** FIO_decompressFrames() :
|
|
* Find and decode frames inside srcFile
|
|
* srcFile presumed opened and valid
|
|
* @return : 0 : OK
|
|
* 1 : error
|
|
*/
|
|
static int FIO_decompressFrames(dRess_t ress, FILE* srcFile,
|
|
const FIO_prefs_t* const prefs,
|
|
const char* dstFileName, const char* srcFileName)
|
|
{
|
|
unsigned readSomething = 0;
|
|
unsigned long long filesize = 0;
|
|
assert(srcFile != NULL);
|
|
|
|
/* for each frame */
|
|
for ( ; ; ) {
|
|
/* check magic number -> version */
|
|
size_t const toRead = 4;
|
|
const BYTE* const buf = (const BYTE*)ress.srcBuffer;
|
|
if (ress.srcBufferLoaded < toRead) /* load up to 4 bytes for header */
|
|
ress.srcBufferLoaded += fread((char*)ress.srcBuffer + ress.srcBufferLoaded,
|
|
(size_t)1, toRead - ress.srcBufferLoaded, srcFile);
|
|
if (ress.srcBufferLoaded==0) {
|
|
if (readSomething==0) { /* srcFile is empty (which is invalid) */
|
|
DISPLAYLEVEL(1, "zstd: %s: unexpected end of file \n", srcFileName);
|
|
return 1;
|
|
} /* else, just reached frame boundary */
|
|
break; /* no more input */
|
|
}
|
|
readSomething = 1; /* there is at least 1 byte in srcFile */
|
|
if (ress.srcBufferLoaded < toRead) {
|
|
DISPLAYLEVEL(1, "zstd: %s: unknown header \n", srcFileName);
|
|
return 1;
|
|
}
|
|
if (ZSTD_isFrame(buf, ress.srcBufferLoaded)) {
|
|
unsigned long long const frameSize = FIO_decompressZstdFrame(&ress, srcFile, prefs, srcFileName, filesize);
|
|
if (frameSize == FIO_ERROR_FRAME_DECODING) return 1;
|
|
filesize += frameSize;
|
|
} else if (buf[0] == 31 && buf[1] == 139) { /* gz magic number */
|
|
#ifdef ZSTD_GZDECOMPRESS
|
|
unsigned long long const frameSize = FIO_decompressGzFrame(&ress, srcFile, prefs, srcFileName);
|
|
if (frameSize == FIO_ERROR_FRAME_DECODING) return 1;
|
|
filesize += frameSize;
|
|
#else
|
|
DISPLAYLEVEL(1, "zstd: %s: gzip file cannot be uncompressed (zstd compiled without HAVE_ZLIB) -- ignored \n", srcFileName);
|
|
return 1;
|
|
#endif
|
|
} else if ((buf[0] == 0xFD && buf[1] == 0x37) /* xz magic number */
|
|
|| (buf[0] == 0x5D && buf[1] == 0x00)) { /* lzma header (no magic number) */
|
|
#ifdef ZSTD_LZMADECOMPRESS
|
|
unsigned long long const frameSize = FIO_decompressLzmaFrame(&ress, srcFile, prefs, srcFileName, buf[0] != 0xFD);
|
|
if (frameSize == FIO_ERROR_FRAME_DECODING) return 1;
|
|
filesize += frameSize;
|
|
#else
|
|
DISPLAYLEVEL(1, "zstd: %s: xz/lzma file cannot be uncompressed (zstd compiled without HAVE_LZMA) -- ignored \n", srcFileName);
|
|
return 1;
|
|
#endif
|
|
} else if (MEM_readLE32(buf) == LZ4_MAGICNUMBER) {
|
|
#ifdef ZSTD_LZ4DECOMPRESS
|
|
unsigned long long const frameSize = FIO_decompressLz4Frame(&ress, srcFile, prefs, srcFileName);
|
|
if (frameSize == FIO_ERROR_FRAME_DECODING) return 1;
|
|
filesize += frameSize;
|
|
#else
|
|
DISPLAYLEVEL(1, "zstd: %s: lz4 file cannot be uncompressed (zstd compiled without HAVE_LZ4) -- ignored \n", srcFileName);
|
|
return 1;
|
|
#endif
|
|
} else if ((prefs->overwrite) && !strcmp (dstFileName, stdoutmark)) { /* pass-through mode */
|
|
return FIO_passThrough(prefs,
|
|
ress.dstFile, srcFile,
|
|
ress.srcBuffer, ress.srcBufferSize,
|
|
ress.srcBufferLoaded);
|
|
} else {
|
|
DISPLAYLEVEL(1, "zstd: %s: unsupported format \n", srcFileName);
|
|
return 1;
|
|
} } /* for each frame */
|
|
|
|
/* Final Status */
|
|
DISPLAYLEVEL(2, "\r%79s\r", "");
|
|
DISPLAYLEVEL(2, "%-20s: %llu bytes \n", srcFileName, filesize);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** FIO_decompressDstFile() :
|
|
open `dstFileName`,
|
|
or path-through if ress.dstFile is already != 0,
|
|
then start decompression process (FIO_decompressFrames()).
|
|
@return : 0 : OK
|
|
1 : operation aborted
|
|
*/
|
|
static int FIO_decompressDstFile(FIO_prefs_t* const prefs,
|
|
dRess_t ress, FILE* srcFile,
|
|
const char* dstFileName, const char* srcFileName)
|
|
{
|
|
int result;
|
|
stat_t statbuf;
|
|
int transfer_permissions = 0;
|
|
int releaseDstFile = 0;
|
|
|
|
if ((ress.dstFile == NULL) && (prefs->testMode==0)) {
|
|
releaseDstFile = 1;
|
|
|
|
ress.dstFile = FIO_openDstFile(prefs, srcFileName, dstFileName);
|
|
if (ress.dstFile==NULL) return 1;
|
|
|
|
/* Must only be added after FIO_openDstFile() succeeds.
|
|
* Otherwise we may delete the destination file if it already exists,
|
|
* and the user presses Ctrl-C when asked if they wish to overwrite.
|
|
*/
|
|
addHandler(dstFileName);
|
|
|
|
if ( strcmp(srcFileName, stdinmark) /* special case : don't transfer permissions from stdin */
|
|
&& UTIL_getFileStat(srcFileName, &statbuf) )
|
|
transfer_permissions = 1;
|
|
}
|
|
|
|
result = FIO_decompressFrames(ress, srcFile, prefs, dstFileName, srcFileName);
|
|
|
|
if (releaseDstFile) {
|
|
FILE* const dstFile = ress.dstFile;
|
|
clearHandler();
|
|
ress.dstFile = NULL;
|
|
if (fclose(dstFile)) {
|
|
DISPLAYLEVEL(1, "zstd: %s: %s \n", dstFileName, strerror(errno));
|
|
result = 1;
|
|
}
|
|
|
|
if ( (result != 0) /* operation failure */
|
|
&& strcmp(dstFileName, nulmark) /* special case : don't remove() /dev/null (#316) */
|
|
&& strcmp(dstFileName, stdoutmark) /* special case : don't remove() stdout */
|
|
) {
|
|
FIO_remove(dstFileName); /* remove decompression artefact; note: don't do anything special if remove() fails */
|
|
} else { /* operation success */
|
|
if ( strcmp(dstFileName, stdoutmark) /* special case : don't chmod stdout */
|
|
&& strcmp(dstFileName, nulmark) /* special case : don't chmod /dev/null */
|
|
&& transfer_permissions ) /* file permissions correctly extracted from src */
|
|
UTIL_setFileStat(dstFileName, &statbuf); /* transfer file permissions from src into dst */
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/** FIO_decompressSrcFile() :
|
|
Open `srcFileName`, transfer control to decompressDstFile()
|
|
@return : 0 : OK
|
|
1 : error
|
|
*/
|
|
static int FIO_decompressSrcFile(FIO_prefs_t* const prefs, dRess_t ress, const char* dstFileName, const char* srcFileName)
|
|
{
|
|
FILE* srcFile;
|
|
int result;
|
|
|
|
if (UTIL_isDirectory(srcFileName)) {
|
|
DISPLAYLEVEL(1, "zstd: %s is a directory -- ignored \n", srcFileName);
|
|
return 1;
|
|
}
|
|
|
|
srcFile = FIO_openSrcFile(srcFileName);
|
|
if (srcFile==NULL) return 1;
|
|
ress.srcBufferLoaded = 0;
|
|
|
|
result = FIO_decompressDstFile(prefs, ress, srcFile, dstFileName, srcFileName);
|
|
|
|
/* Close file */
|
|
if (fclose(srcFile)) {
|
|
DISPLAYLEVEL(1, "zstd: %s: %s \n", srcFileName, strerror(errno)); /* error should not happen */
|
|
return 1;
|
|
}
|
|
if ( prefs->removeSrcFile /* --rm */
|
|
&& (result==0) /* decompression successful */
|
|
&& strcmp(srcFileName, stdinmark) ) /* not stdin */ {
|
|
/* We must clear the handler, since after this point calling it would
|
|
* delete both the source and destination files.
|
|
*/
|
|
clearHandler();
|
|
if (FIO_remove(srcFileName)) {
|
|
/* failed to remove src file */
|
|
DISPLAYLEVEL(1, "zstd: %s: %s \n", srcFileName, strerror(errno));
|
|
return 1;
|
|
} }
|
|
return result;
|
|
}
|
|
|
|
|
|
|
|
int FIO_decompressFilename(FIO_prefs_t* const prefs,
|
|
const char* dstFileName, const char* srcFileName,
|
|
const char* dictFileName)
|
|
{
|
|
dRess_t const ress = FIO_createDResources(prefs, dictFileName);
|
|
|
|
int const decodingError = FIO_decompressSrcFile(prefs, ress, dstFileName, srcFileName);
|
|
|
|
FIO_freeDResources(ress);
|
|
return decodingError;
|
|
}
|
|
|
|
static const char *suffixList[] = {
|
|
ZSTD_EXTENSION,
|
|
TZSTD_EXTENSION,
|
|
#ifdef ZSTD_GZDECOMPRESS
|
|
GZ_EXTENSION,
|
|
TGZ_EXTENSION,
|
|
#endif
|
|
#ifdef ZSTD_LZMADECOMPRESS
|
|
LZMA_EXTENSION,
|
|
XZ_EXTENSION,
|
|
TXZ_EXTENSION,
|
|
#endif
|
|
#ifdef ZSTD_LZ4DECOMPRESS
|
|
LZ4_EXTENSION,
|
|
TLZ4_EXTENSION,
|
|
#endif
|
|
NULL
|
|
};
|
|
|
|
static const char *suffixListStr =
|
|
ZSTD_EXTENSION "/" TZSTD_EXTENSION
|
|
#ifdef ZSTD_GZDECOMPRESS
|
|
"/" GZ_EXTENSION "/" TGZ_EXTENSION
|
|
#endif
|
|
#ifdef ZSTD_LZMADECOMPRESS
|
|
"/" LZMA_EXTENSION "/" XZ_EXTENSION "/" TXZ_EXTENSION
|
|
#endif
|
|
#ifdef ZSTD_LZ4DECOMPRESS
|
|
"/" LZ4_EXTENSION "/" TLZ4_EXTENSION
|
|
#endif
|
|
;
|
|
|
|
/* FIO_determineDstName() :
|
|
* create a destination filename from a srcFileName.
|
|
* @return a pointer to it.
|
|
* @return == NULL if there is an error */
|
|
static const char*
|
|
FIO_determineDstName(const char* srcFileName, const char* outDirName)
|
|
{
|
|
static size_t dfnbCapacity = 0;
|
|
static char* dstFileNameBuffer = NULL; /* using static allocation : this function cannot be multi-threaded */
|
|
size_t dstFileNameEndPos;
|
|
char* outDirFilename = NULL;
|
|
const char* dstSuffix = "";
|
|
size_t dstSuffixLen = 0;
|
|
|
|
size_t sfnSize = strlen(srcFileName);
|
|
|
|
size_t srcSuffixLen;
|
|
const char* const srcSuffix = strrchr(srcFileName, '.');
|
|
if (srcSuffix == NULL) {
|
|
DISPLAYLEVEL(1,
|
|
"zstd: %s: unknown suffix (%s expected). "
|
|
"Can't derive the output file name. "
|
|
"Specify it with -o dstFileName. Ignoring.\n",
|
|
srcFileName, suffixListStr);
|
|
return NULL;
|
|
}
|
|
srcSuffixLen = strlen(srcSuffix);
|
|
|
|
{
|
|
const char** matchedSuffixPtr;
|
|
for (matchedSuffixPtr = suffixList; *matchedSuffixPtr != NULL; matchedSuffixPtr++) {
|
|
if (!strcmp(*matchedSuffixPtr, srcSuffix)) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* check suffix is authorized */
|
|
if (sfnSize <= srcSuffixLen || *matchedSuffixPtr == NULL) {
|
|
DISPLAYLEVEL(1,
|
|
"zstd: %s: unknown suffix (%s expected). "
|
|
"Can't derive the output file name. "
|
|
"Specify it with -o dstFileName. Ignoring.\n",
|
|
srcFileName, suffixListStr);
|
|
return NULL;
|
|
}
|
|
|
|
if ((*matchedSuffixPtr)[1] == 't') {
|
|
dstSuffix = ".tar";
|
|
dstSuffixLen = strlen(dstSuffix);
|
|
}
|
|
}
|
|
|
|
if (outDirName) {
|
|
outDirFilename = FIO_createFilename_fromOutDir(srcFileName, outDirName, 0);
|
|
sfnSize = strlen(outDirFilename);
|
|
assert(outDirFilename != NULL);
|
|
}
|
|
|
|
if (dfnbCapacity+srcSuffixLen <= sfnSize+1+dstSuffixLen) {
|
|
/* allocate enough space to write dstFilename into it */
|
|
free(dstFileNameBuffer);
|
|
dfnbCapacity = sfnSize + 20;
|
|
dstFileNameBuffer = (char*)malloc(dfnbCapacity);
|
|
if (dstFileNameBuffer==NULL)
|
|
EXM_THROW(74, "%s : not enough memory for dstFileName",
|
|
strerror(errno));
|
|
}
|
|
|
|
/* return dst name == src name truncated from suffix */
|
|
assert(dstFileNameBuffer != NULL);
|
|
dstFileNameEndPos = sfnSize - srcSuffixLen;
|
|
if (outDirFilename) {
|
|
memcpy(dstFileNameBuffer, outDirFilename, dstFileNameEndPos);
|
|
free(outDirFilename);
|
|
} else {
|
|
memcpy(dstFileNameBuffer, srcFileName, dstFileNameEndPos);
|
|
}
|
|
|
|
/* The short tar extensions tzst, tgz, txz and tlz4 files should have "tar"
|
|
* extension on decompression. Also writes terminating null. */
|
|
strcpy(dstFileNameBuffer + dstFileNameEndPos, dstSuffix);
|
|
return dstFileNameBuffer;
|
|
|
|
/* note : dstFileNameBuffer memory is not going to be free */
|
|
}
|
|
|
|
|
|
int
|
|
FIO_decompressMultipleFilenames(FIO_prefs_t* const prefs,
|
|
const char** srcNamesTable, unsigned nbFiles,
|
|
const char* outDirName, const char* outFileName,
|
|
const char* dictFileName)
|
|
{
|
|
int error = 0;
|
|
dRess_t ress = FIO_createDResources(prefs, dictFileName);
|
|
|
|
if (outFileName) {
|
|
unsigned u;
|
|
if (!prefs->testMode) {
|
|
ress.dstFile = FIO_openDstFile(prefs, NULL, outFileName);
|
|
if (ress.dstFile == 0) EXM_THROW(19, "cannot open %s", outFileName);
|
|
}
|
|
for (u=0; u<nbFiles; u++)
|
|
error |= FIO_decompressSrcFile(prefs, ress, outFileName, srcNamesTable[u]);
|
|
if ((!prefs->testMode) && (fclose(ress.dstFile)))
|
|
EXM_THROW(72, "Write error : %s : cannot properly close output file",
|
|
strerror(errno));
|
|
} else {
|
|
unsigned u;
|
|
for (u=0; u<nbFiles; u++) { /* create dstFileName */
|
|
const char* const srcFileName = srcNamesTable[u];
|
|
const char* const dstFileName = FIO_determineDstName(srcFileName, outDirName);
|
|
if (dstFileName == NULL) { error=1; continue; }
|
|
|
|
error |= FIO_decompressSrcFile(prefs, ress, dstFileName, srcFileName);
|
|
}
|
|
if (outDirName)
|
|
FIO_checkFilenameCollisions(srcNamesTable ,nbFiles);
|
|
}
|
|
|
|
FIO_freeDResources(ress);
|
|
return error;
|
|
}
|
|
|
|
/* **************************************************************************
|
|
* .zst file info (--list command)
|
|
***************************************************************************/
|
|
|
|
typedef struct {
|
|
U64 decompressedSize;
|
|
U64 compressedSize;
|
|
U64 windowSize;
|
|
int numActualFrames;
|
|
int numSkippableFrames;
|
|
int decompUnavailable;
|
|
int usesCheck;
|
|
U32 nbFiles;
|
|
} fileInfo_t;
|
|
|
|
typedef enum {
|
|
info_success=0,
|
|
info_frame_error=1,
|
|
info_not_zstd=2,
|
|
info_file_error=3,
|
|
info_truncated_input=4,
|
|
} InfoError;
|
|
|
|
#define ERROR_IF(c,n,...) { \
|
|
if (c) { \
|
|
DISPLAYLEVEL(1, __VA_ARGS__); \
|
|
DISPLAYLEVEL(1, " \n"); \
|
|
return n; \
|
|
} \
|
|
}
|
|
|
|
static InfoError
|
|
FIO_analyzeFrames(fileInfo_t* info, FILE* const srcFile)
|
|
{
|
|
/* begin analyzing frame */
|
|
for ( ; ; ) {
|
|
BYTE headerBuffer[ZSTD_FRAMEHEADERSIZE_MAX];
|
|
size_t const numBytesRead = fread(headerBuffer, 1, sizeof(headerBuffer), srcFile);
|
|
if (numBytesRead < ZSTD_FRAMEHEADERSIZE_MIN(ZSTD_f_zstd1)) {
|
|
if ( feof(srcFile)
|
|
&& (numBytesRead == 0)
|
|
&& (info->compressedSize > 0)
|
|
&& (info->compressedSize != UTIL_FILESIZE_UNKNOWN) ) {
|
|
unsigned long long file_position = (unsigned long long) LONG_TELL(srcFile);
|
|
unsigned long long file_size = (unsigned long long) info->compressedSize;
|
|
ERROR_IF(file_position != file_size, info_truncated_input,
|
|
"Error: seeked to position %llu, which is beyond file size of %llu\n",
|
|
file_position,
|
|
file_size);
|
|
break; /* correct end of file => success */
|
|
}
|
|
ERROR_IF(feof(srcFile), info_not_zstd, "Error: reached end of file with incomplete frame");
|
|
ERROR_IF(1, info_frame_error, "Error: did not reach end of file but ran out of frames");
|
|
}
|
|
{ U32 const magicNumber = MEM_readLE32(headerBuffer);
|
|
/* Zstandard frame */
|
|
if (magicNumber == ZSTD_MAGICNUMBER) {
|
|
ZSTD_frameHeader header;
|
|
U64 const frameContentSize = ZSTD_getFrameContentSize(headerBuffer, numBytesRead);
|
|
if ( frameContentSize == ZSTD_CONTENTSIZE_ERROR
|
|
|| frameContentSize == ZSTD_CONTENTSIZE_UNKNOWN ) {
|
|
info->decompUnavailable = 1;
|
|
} else {
|
|
info->decompressedSize += frameContentSize;
|
|
}
|
|
ERROR_IF(ZSTD_getFrameHeader(&header, headerBuffer, numBytesRead) != 0,
|
|
info_frame_error, "Error: could not decode frame header");
|
|
info->windowSize = header.windowSize;
|
|
/* move to the end of the frame header */
|
|
{ size_t const headerSize = ZSTD_frameHeaderSize(headerBuffer, numBytesRead);
|
|
ERROR_IF(ZSTD_isError(headerSize), info_frame_error, "Error: could not determine frame header size");
|
|
ERROR_IF(fseek(srcFile, ((long)headerSize)-((long)numBytesRead), SEEK_CUR) != 0,
|
|
info_frame_error, "Error: could not move to end of frame header");
|
|
}
|
|
|
|
/* skip all blocks in the frame */
|
|
{ int lastBlock = 0;
|
|
do {
|
|
BYTE blockHeaderBuffer[3];
|
|
ERROR_IF(fread(blockHeaderBuffer, 1, 3, srcFile) != 3,
|
|
info_frame_error, "Error while reading block header");
|
|
{ U32 const blockHeader = MEM_readLE24(blockHeaderBuffer);
|
|
U32 const blockTypeID = (blockHeader >> 1) & 3;
|
|
U32 const isRLE = (blockTypeID == 1);
|
|
U32 const isWrongBlock = (blockTypeID == 3);
|
|
long const blockSize = isRLE ? 1 : (long)(blockHeader >> 3);
|
|
ERROR_IF(isWrongBlock, info_frame_error, "Error: unsupported block type");
|
|
lastBlock = blockHeader & 1;
|
|
ERROR_IF(fseek(srcFile, blockSize, SEEK_CUR) != 0,
|
|
info_frame_error, "Error: could not skip to end of block");
|
|
}
|
|
} while (lastBlock != 1);
|
|
}
|
|
|
|
/* check if checksum is used */
|
|
{ BYTE const frameHeaderDescriptor = headerBuffer[4];
|
|
int const contentChecksumFlag = (frameHeaderDescriptor & (1 << 2)) >> 2;
|
|
if (contentChecksumFlag) {
|
|
info->usesCheck = 1;
|
|
ERROR_IF(fseek(srcFile, 4, SEEK_CUR) != 0,
|
|
info_frame_error, "Error: could not skip past checksum");
|
|
} }
|
|
info->numActualFrames++;
|
|
}
|
|
/* Skippable frame */
|
|
else if ((magicNumber & ZSTD_MAGIC_SKIPPABLE_MASK) == ZSTD_MAGIC_SKIPPABLE_START) {
|
|
U32 const frameSize = MEM_readLE32(headerBuffer + 4);
|
|
long const seek = (long)(8 + frameSize - numBytesRead);
|
|
ERROR_IF(LONG_SEEK(srcFile, seek, SEEK_CUR) != 0,
|
|
info_frame_error, "Error: could not find end of skippable frame");
|
|
info->numSkippableFrames++;
|
|
}
|
|
/* unknown content */
|
|
else {
|
|
return info_not_zstd;
|
|
}
|
|
} /* magic number analysis */
|
|
} /* end analyzing frames */
|
|
return info_success;
|
|
}
|
|
|
|
|
|
static InfoError
|
|
getFileInfo_fileConfirmed(fileInfo_t* info, const char* inFileName)
|
|
{
|
|
InfoError status;
|
|
FILE* const srcFile = FIO_openSrcFile(inFileName);
|
|
ERROR_IF(srcFile == NULL, info_file_error, "Error: could not open source file %s", inFileName);
|
|
|
|
info->compressedSize = UTIL_getFileSize(inFileName);
|
|
status = FIO_analyzeFrames(info, srcFile);
|
|
|
|
fclose(srcFile);
|
|
info->nbFiles = 1;
|
|
return status;
|
|
}
|
|
|
|
|
|
/** getFileInfo() :
|
|
* Reads information from file, stores in *info
|
|
* @return : InfoError status
|
|
*/
|
|
static InfoError
|
|
getFileInfo(fileInfo_t* info, const char* srcFileName)
|
|
{
|
|
ERROR_IF(!UTIL_isRegularFile(srcFileName),
|
|
info_file_error, "Error : %s is not a file", srcFileName);
|
|
return getFileInfo_fileConfirmed(info, srcFileName);
|
|
}
|
|
|
|
|
|
static void
|
|
displayInfo(const char* inFileName, const fileInfo_t* info, int displayLevel)
|
|
{
|
|
unsigned const unit = info->compressedSize < (1 MB) ? (1 KB) : (1 MB);
|
|
const char* const unitStr = info->compressedSize < (1 MB) ? "KB" : "MB";
|
|
double const windowSizeUnit = (double)info->windowSize / unit;
|
|
double const compressedSizeUnit = (double)info->compressedSize / unit;
|
|
double const decompressedSizeUnit = (double)info->decompressedSize / unit;
|
|
double const ratio = (info->compressedSize == 0) ? 0 : ((double)info->decompressedSize)/info->compressedSize;
|
|
const char* const checkString = (info->usesCheck ? "XXH64" : "None");
|
|
if (displayLevel <= 2) {
|
|
if (!info->decompUnavailable) {
|
|
DISPLAYOUT("%6d %5d %7.2f %2s %9.2f %2s %5.3f %5s %s\n",
|
|
info->numSkippableFrames + info->numActualFrames,
|
|
info->numSkippableFrames,
|
|
compressedSizeUnit, unitStr, decompressedSizeUnit, unitStr,
|
|
ratio, checkString, inFileName);
|
|
} else {
|
|
DISPLAYOUT("%6d %5d %7.2f %2s %5s %s\n",
|
|
info->numSkippableFrames + info->numActualFrames,
|
|
info->numSkippableFrames,
|
|
compressedSizeUnit, unitStr,
|
|
checkString, inFileName);
|
|
}
|
|
} else {
|
|
DISPLAYOUT("%s \n", inFileName);
|
|
DISPLAYOUT("# Zstandard Frames: %d\n", info->numActualFrames);
|
|
if (info->numSkippableFrames)
|
|
DISPLAYOUT("# Skippable Frames: %d\n", info->numSkippableFrames);
|
|
DISPLAYOUT("Window Size: %.2f %2s (%llu B)\n",
|
|
windowSizeUnit, unitStr,
|
|
(unsigned long long)info->windowSize);
|
|
DISPLAYOUT("Compressed Size: %.2f %2s (%llu B)\n",
|
|
compressedSizeUnit, unitStr,
|
|
(unsigned long long)info->compressedSize);
|
|
if (!info->decompUnavailable) {
|
|
DISPLAYOUT("Decompressed Size: %.2f %2s (%llu B)\n",
|
|
decompressedSizeUnit, unitStr,
|
|
(unsigned long long)info->decompressedSize);
|
|
DISPLAYOUT("Ratio: %.4f\n", ratio);
|
|
}
|
|
DISPLAYOUT("Check: %s\n", checkString);
|
|
DISPLAYOUT("\n");
|
|
}
|
|
}
|
|
|
|
static fileInfo_t FIO_addFInfo(fileInfo_t fi1, fileInfo_t fi2)
|
|
{
|
|
fileInfo_t total;
|
|
memset(&total, 0, sizeof(total));
|
|
total.numActualFrames = fi1.numActualFrames + fi2.numActualFrames;
|
|
total.numSkippableFrames = fi1.numSkippableFrames + fi2.numSkippableFrames;
|
|
total.compressedSize = fi1.compressedSize + fi2.compressedSize;
|
|
total.decompressedSize = fi1.decompressedSize + fi2.decompressedSize;
|
|
total.decompUnavailable = fi1.decompUnavailable | fi2.decompUnavailable;
|
|
total.usesCheck = fi1.usesCheck & fi2.usesCheck;
|
|
total.nbFiles = fi1.nbFiles + fi2.nbFiles;
|
|
return total;
|
|
}
|
|
|
|
static int
|
|
FIO_listFile(fileInfo_t* total, const char* inFileName, int displayLevel)
|
|
{
|
|
fileInfo_t info;
|
|
memset(&info, 0, sizeof(info));
|
|
{ InfoError const error = getFileInfo(&info, inFileName);
|
|
switch (error) {
|
|
case info_frame_error:
|
|
/* display error, but provide output */
|
|
DISPLAYLEVEL(1, "Error while parsing \"%s\" \n", inFileName);
|
|
break;
|
|
case info_not_zstd:
|
|
DISPLAYOUT("File \"%s\" not compressed by zstd \n", inFileName);
|
|
if (displayLevel > 2) DISPLAYOUT("\n");
|
|
return 1;
|
|
case info_file_error:
|
|
/* error occurred while opening the file */
|
|
if (displayLevel > 2) DISPLAYOUT("\n");
|
|
return 1;
|
|
case info_truncated_input:
|
|
DISPLAYOUT("File \"%s\" is truncated \n", inFileName);
|
|
if (displayLevel > 2) DISPLAYOUT("\n");
|
|
return 1;
|
|
case info_success:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
displayInfo(inFileName, &info, displayLevel);
|
|
*total = FIO_addFInfo(*total, info);
|
|
assert(error == info_success || error == info_frame_error);
|
|
return (int)error;
|
|
}
|
|
}
|
|
|
|
int FIO_listMultipleFiles(unsigned numFiles, const char** filenameTable, int displayLevel)
|
|
{
|
|
/* ensure no specified input is stdin (needs fseek() capability) */
|
|
{ unsigned u;
|
|
for (u=0; u<numFiles;u++) {
|
|
ERROR_IF(!strcmp (filenameTable[u], stdinmark),
|
|
1, "zstd: --list does not support reading from standard input");
|
|
} }
|
|
|
|
if (numFiles == 0) {
|
|
if (!IS_CONSOLE(stdin)) {
|
|
DISPLAYLEVEL(1, "zstd: --list does not support reading from standard input \n");
|
|
}
|
|
DISPLAYLEVEL(1, "No files given \n");
|
|
return 1;
|
|
}
|
|
|
|
if (displayLevel <= 2) {
|
|
DISPLAYOUT("Frames Skips Compressed Uncompressed Ratio Check Filename\n");
|
|
}
|
|
{ int error = 0;
|
|
fileInfo_t total;
|
|
memset(&total, 0, sizeof(total));
|
|
total.usesCheck = 1;
|
|
/* --list each file, and check for any error */
|
|
{ unsigned u;
|
|
for (u=0; u<numFiles;u++) {
|
|
error |= FIO_listFile(&total, filenameTable[u], displayLevel);
|
|
} }
|
|
if (numFiles > 1 && displayLevel <= 2) { /* display total */
|
|
unsigned const unit = total.compressedSize < (1 MB) ? (1 KB) : (1 MB);
|
|
const char* const unitStr = total.compressedSize < (1 MB) ? "KB" : "MB";
|
|
double const compressedSizeUnit = (double)total.compressedSize / unit;
|
|
double const decompressedSizeUnit = (double)total.decompressedSize / unit;
|
|
double const ratio = (total.compressedSize == 0) ? 0 : ((double)total.decompressedSize)/total.compressedSize;
|
|
const char* const checkString = (total.usesCheck ? "XXH64" : "");
|
|
DISPLAYOUT("----------------------------------------------------------------- \n");
|
|
if (total.decompUnavailable) {
|
|
DISPLAYOUT("%6d %5d %7.2f %2s %5s %u files\n",
|
|
total.numSkippableFrames + total.numActualFrames,
|
|
total.numSkippableFrames,
|
|
compressedSizeUnit, unitStr,
|
|
checkString, (unsigned)total.nbFiles);
|
|
} else {
|
|
DISPLAYOUT("%6d %5d %7.2f %2s %9.2f %2s %5.3f %5s %u files\n",
|
|
total.numSkippableFrames + total.numActualFrames,
|
|
total.numSkippableFrames,
|
|
compressedSizeUnit, unitStr, decompressedSizeUnit, unitStr,
|
|
ratio, checkString, (unsigned)total.nbFiles);
|
|
} }
|
|
return error;
|
|
}
|
|
}
|
|
|
|
|
|
#endif /* #ifndef ZSTD_NODECOMPRESS */
|