653 lines
22 KiB
C++
653 lines
22 KiB
C++
/*
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*******************************************************************************
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*
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* Copyright (C) 2003, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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*******************************************************************************
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* file name: icuswap.cpp
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* encoding: US-ASCII
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* tab size: 8 (not used)
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* indentation:4
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*
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* created on: 2003aug08
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* created by: Markus W. Scherer
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*
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* This tool takes an ICU data file and "swaps" it, that is, changes its
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* platform properties between big-/little-endianness and ASCII/EBCDIC charset
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* families.
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* The modified data file is written to a new file.
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* Useful as an install-time tool for shipping only one flavor of ICU data
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* and preparing data files for the target platform.
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* Will not work with data DLLs (shared libraries).
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "unicode/utypes.h"
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#include "unicode/udata.h"
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#include "cmemory.h"
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#include "cstring.h"
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#include "uarrsort.h"
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#include "ucmndata.h"
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#include "udataswp.h"
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#include "uoptions.h"
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/* swapping implementations in common */
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#include "uresdata.h"
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#include "ucnv_io.h"
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#include "uprops.h"
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#include "ucol_swp.h"
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#include "ucnv_bld.h"
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#include "unormimp.h"
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#include "sprpimpl.h"
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#include "propname.h"
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#include "rbbidata.h"
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/* swapping implementations in i18n */
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/* definitions */
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#define LENGTHOF(array) (int32_t)(sizeof(array)/sizeof((array)[0]))
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static UOption options[]={
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UOPTION_HELP_H,
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UOPTION_HELP_QUESTION_MARK,
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UOPTION_DEF("type", 't', UOPT_REQUIRES_ARG)
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};
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enum {
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OPT_HELP_H,
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OPT_HELP_QUESTION_MARK,
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OPT_OUT_TYPE
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};
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static int32_t
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fileSize(FILE *f) {
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int32_t size;
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fseek(f, 0, SEEK_END);
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size=(int32_t)ftell(f);
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fseek(f, 0, SEEK_SET);
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return size;
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}
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/**
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* Identifies and then transforms the ICU data piece in-place, or determines
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* its length. See UDataSwapFn.
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* This function handles .dat data packages as well as single data pieces
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* and internally dispatches to per-type swap functions.
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* Sets a U_UNSUPPORTED_ERROR if the data format is not recognized.
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*
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* @see UDataSwapFn
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* @see udata_openSwapper
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* @see udata_openSwapperForInputData
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* @draft ICU 2.8
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*/
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static int32_t
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udata_swap(const UDataSwapper *ds,
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const void *inData, int32_t length, void *outData,
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UErrorCode *pErrorCode);
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/**
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* Swap an ICU .dat package, including swapping of enclosed items.
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*/
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U_CAPI int32_t U_EXPORT2
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udata_swapPackage(const UDataSwapper *ds,
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const void *inData, int32_t length, void *outData,
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UErrorCode *pErrorCode);
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static void U_CALLCONV
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printError(void *context, const char *fmt, va_list args) {
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vfprintf((FILE *)context, fmt, args);
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}
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static int
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printUsage(const char *pname, UBool ishelp) {
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fprintf(stderr,
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"%csage: %s [ -h, -?, --help ] -tl|-tb|-te|--type=b|... infilename outfilename\n",
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ishelp ? 'U' : 'u', pname);
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if(ishelp) {
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fprintf(stderr,
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"\nOptions: -h, -?, --help print this message and exit\n"
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" Read the input file, swap its platform properties according\n"
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" to the -t or --type option, and write the result to the output file.\n"
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" -tl change to little-endian/ASCII charset family\n"
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" -tb change to big-endian/ASCII charset family\n"
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" -te change to little-endian/EBCDIC charset family\n");
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}
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return !ishelp;
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}
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extern int
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main(int argc, char *argv[]) {
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FILE *in, *out;
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const char *pname;
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char *data;
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int32_t length;
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UBool ishelp;
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int rc;
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UDataSwapper *ds;
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UErrorCode errorCode;
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uint8_t outCharset;
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UBool outIsBigEndian;
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U_MAIN_INIT_ARGS(argc, argv);
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/* get the program basename */
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pname=strrchr(argv[0], U_FILE_SEP_CHAR);
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if(pname==NULL) {
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pname=strrchr(argv[0], '/');
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}
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if(pname!=NULL) {
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++pname;
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} else {
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pname=argv[0];
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}
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argc=u_parseArgs(argc, argv, LENGTHOF(options), options);
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ishelp=options[OPT_HELP_H].doesOccur || options[OPT_HELP_QUESTION_MARK].doesOccur;
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if(ishelp || argc!=3) {
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return printUsage(pname, ishelp);
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}
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/* parse the output type option */
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data=(char *)options[OPT_OUT_TYPE].value;
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if(data[0]==0 || data[1]!=0) {
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/* the type must be exactly one letter */
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return printUsage(pname, FALSE);
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}
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switch(data[0]) {
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case 'l':
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outIsBigEndian=FALSE;
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outCharset=U_ASCII_FAMILY;
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break;
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case 'b':
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outIsBigEndian=TRUE;
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outCharset=U_ASCII_FAMILY;
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break;
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case 'e':
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outIsBigEndian=TRUE;
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outCharset=U_EBCDIC_FAMILY;
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break;
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default:
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return printUsage(pname, FALSE);
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}
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in=out=NULL;
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data=NULL;
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/* open the input file, get its length, allocate memory for it, read the file */
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in=fopen(argv[1], "rb");
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if(in==NULL) {
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fprintf(stderr, "%s: unable to open input file \"%s\"\n", pname, argv[1]);
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rc=2;
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goto done;
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}
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length=fileSize(in);
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if(length<=0) {
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fprintf(stderr, "%s: empty input file \"%s\"\n", pname, argv[1]);
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rc=2;
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goto done;
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}
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/*
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* +15: udata_swapPackage() may need to add a few padding bytes to the
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* last item if charset swapping is done,
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* because the last item may be resorted into the middle and then needs
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* additional padding bytes
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*/
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data=(char *)malloc(length+15);
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if(data==NULL) {
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fprintf(stderr, "%s: error allocating memory for \"%s\"\n", pname, argv[1]);
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rc=2;
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goto done;
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}
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/* set the last 15 bytes to the usual padding byte, see udata_swapPackage() */
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uprv_memset(data+length-15, 0xaa, 15);
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if(length!=(int32_t)fread(data, 1, length, in)) {
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fprintf(stderr, "%s: error reading \"%s\"\n", pname, argv[1]);
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rc=3;
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goto done;
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}
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fclose(in);
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in=NULL;
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/* swap the data in-place */
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errorCode=U_ZERO_ERROR;
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ds=udata_openSwapperForInputData(data, length, outIsBigEndian, outCharset, &errorCode);
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if(U_FAILURE(errorCode)) {
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fprintf(stderr, "%s: udata_openSwapperForInputData(\"%s\") failed - %s\n",
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pname, argv[1], u_errorName(errorCode));
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rc=4;
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goto done;
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}
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ds->printError=printError;
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ds->printErrorContext=stderr;
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length=udata_swap(ds, data, length, data, &errorCode);
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udata_closeSwapper(ds);
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if(U_FAILURE(errorCode)) {
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fprintf(stderr, "%s: udata_swap(\"%s\") failed - %s\n",
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pname, argv[1], u_errorName(errorCode));
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rc=4;
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goto done;
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}
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out=fopen(argv[2], "wb");
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if(out==NULL) {
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fprintf(stderr, "%s: unable to open output file \"%s\"\n", pname, argv[2]);
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rc=5;
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goto done;
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}
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if(length!=(int32_t)fwrite(data, 1, length, out)) {
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fprintf(stderr, "%s: error writing \"%s\"\n", pname, argv[2]);
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rc=6;
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goto done;
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}
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fclose(out);
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out=NULL;
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/* all done */
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rc=0;
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done:
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if(in!=NULL) {
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fclose(in);
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}
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if(out!=NULL) {
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fclose(out);
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}
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if(data!=NULL) {
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free(data);
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}
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return rc;
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}
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/* swap the data ------------------------------------------------------------ */
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static const struct {
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uint8_t dataFormat[4];
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UDataSwapFn *swapFn;
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} swapFns[]={
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{ { 0x52, 0x65, 0x73, 0x42 }, ures_swap }, /* dataFormat="ResB" */
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#if !UCONFIG_NO_LEGACY_CONVERSION
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{ { 0x63, 0x6e, 0x76, 0x74 }, ucnv_swap }, /* dataFormat="cnvt" */
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{ { 0x43, 0x76, 0x41, 0x6c }, ucnv_swapAliases }, /* dataFormat="CvAl" */
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#endif
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{ { 0x43, 0x6d, 0x6e, 0x44 }, udata_swapPackage }, /* dataFormat="CmnD" */
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#if !UCONFIG_NO_IDNA
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{ { 0x53, 0x50, 0x52, 0x50 }, usprep_swap }, /* dataFormat="SPRP" */
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#endif
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/* insert data formats here, descending by expected frequency of occurrence */
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{ { 0x55, 0x50, 0x72, 0x6f }, uprops_swap }, /* dataFormat="UPro" */
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#if !UCONFIG_NO_NORMALIZATION
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{ { 0x4e, 0x6f, 0x72, 0x6d }, unorm_swap }, /* dataFormat="Norm" */
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#endif
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#if !UCONFIG_NO_COLLATION
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{ { 0x55, 0x43, 0x6f, 0x6c }, ucol_swap }, /* dataFormat="UCol" */
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{ { 0x49, 0x6e, 0x76, 0x43 }, ucol_swapInverseUCA },/* dataFormat="InvC" */
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#endif
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#if !UCONFIG_NO_BREAK_ITERATION
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{ { 0x42, 0x72, 0x6b, 0x20 }, ubrk_swap }, /* dataFormat="Brk " */
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#endif
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{ { 0x70, 0x6e, 0x61, 0x6d }, upname_swap }, /* dataFormat="pnam" */
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{ { 0x75, 0x6e, 0x61, 0x6d }, uchar_swapNames } /* dataFormat="unam" */
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};
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static int32_t
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udata_swap(const UDataSwapper *ds,
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const void *inData, int32_t length, void *outData,
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UErrorCode *pErrorCode) {
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char dataFormatChars[4];
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const UDataInfo *pInfo;
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int32_t headerSize, i, swappedLength;
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if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
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return 0;
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}
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/*
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* Preflight the header first; checks for illegal arguments, too.
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* Do not swap the header right away because the format-specific swapper
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* will swap it, get the headerSize again, and also use the header
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* information. Otherwise we would have to pass some of the information
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* and not be able to use the UDataSwapFn signature.
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*/
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headerSize=udata_swapDataHeader(ds, inData, -1, NULL, pErrorCode);
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/*
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* If we wanted udata_swap() to also handle non-loadable data like a UTrie,
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* then we could check here for further known magic values and structures.
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*/
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if(U_FAILURE(*pErrorCode)) {
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return 0; /* the data format was not recognized */
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}
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pInfo=(const UDataInfo *)((const char *)inData+4);
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{
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/* convert the data format from ASCII to Unicode to the system charset */
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UChar u[4]={
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pInfo->dataFormat[0], pInfo->dataFormat[1],
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pInfo->dataFormat[2], pInfo->dataFormat[3]
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};
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if(uprv_isInvariantUString(u, 4)) {
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u_UCharsToChars(u, dataFormatChars, 4);
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} else {
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dataFormatChars[0]=dataFormatChars[1]=dataFormatChars[2]=dataFormatChars[3]='?';
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}
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}
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/* dispatch to the swap function for the dataFormat */
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for(i=0; i<LENGTHOF(swapFns); ++i) {
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if(0==memcmp(swapFns[i].dataFormat, pInfo->dataFormat, 4)) {
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swappedLength=swapFns[i].swapFn(ds, inData, length, outData, pErrorCode);
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if(U_FAILURE(*pErrorCode)) {
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udata_printError(ds, "udata_swap(): failure swapping data format %02x.%02x.%02x.%02x (\"%c%c%c%c\") - %s\n",
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pInfo->dataFormat[0], pInfo->dataFormat[1],
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pInfo->dataFormat[2], pInfo->dataFormat[3],
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dataFormatChars[0], dataFormatChars[1],
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dataFormatChars[2], dataFormatChars[3],
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u_errorName(*pErrorCode));
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} else if(swappedLength<(length-15)) {
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/* swapped less than expected */
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udata_printError(ds, "udata_swap() warning: swapped only %d out of %d bytes - data format %02x.%02x.%02x.%02x (\"%c%c%c%c\")\n",
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swappedLength, length,
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pInfo->dataFormat[0], pInfo->dataFormat[1],
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pInfo->dataFormat[2], pInfo->dataFormat[3],
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dataFormatChars[0], dataFormatChars[1],
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dataFormatChars[2], dataFormatChars[3],
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u_errorName(*pErrorCode));
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}
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return swappedLength;
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}
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}
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/* the dataFormat was not recognized */
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udata_printError(ds, "udata_swap(): unknown data format %02x.%02x.%02x.%02x (\"%c%c%c%c\")\n",
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pInfo->dataFormat[0], pInfo->dataFormat[1],
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pInfo->dataFormat[2], pInfo->dataFormat[3],
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dataFormatChars[0], dataFormatChars[1],
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dataFormatChars[2], dataFormatChars[3]);
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*pErrorCode=U_UNSUPPORTED_ERROR;
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return 0;
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}
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struct ToCEntry {
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uint32_t nameOffset, inOffset, outOffset, length;
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};
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static int32_t
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compareToCEntries(const void *context, const void *left, const void *right) {
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const char *chars=(const char *)context;
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return (int32_t)uprv_strcmp(chars+((const ToCEntry *)left)->nameOffset,
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chars+((const ToCEntry *)right)->nameOffset);
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}
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U_CAPI int32_t U_EXPORT2
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udata_swapPackage(const UDataSwapper *ds,
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const void *inData, int32_t length, void *outData,
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UErrorCode *pErrorCode) {
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const UDataInfo *pInfo;
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int32_t headerSize;
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const uint8_t *inBytes;
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uint8_t *outBytes;
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uint32_t itemCount, offset, i;
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int32_t itemLength;
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const UDataOffsetTOCEntry *inEntries;
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UDataOffsetTOCEntry *outEntries;
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ToCEntry *table;
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/* udata_swapDataHeader checks the arguments */
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headerSize=udata_swapDataHeader(ds, inData, length, outData, pErrorCode);
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if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
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return 0;
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}
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/* check data format and format version */
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pInfo=(const UDataInfo *)((const char *)inData+4);
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if(!(
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pInfo->dataFormat[0]==0x43 && /* dataFormat="CmnD" */
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pInfo->dataFormat[1]==0x6d &&
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pInfo->dataFormat[2]==0x6e &&
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pInfo->dataFormat[3]==0x44 &&
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pInfo->formatVersion[0]==1
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)) {
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udata_printError(ds, "udata_swapPackage(): data format %02x.%02x.%02x.%02x (format version %02x) is not recognized as an ICU .dat package\n",
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pInfo->dataFormat[0], pInfo->dataFormat[1],
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pInfo->dataFormat[2], pInfo->dataFormat[3],
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pInfo->formatVersion[0]);
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*pErrorCode=U_UNSUPPORTED_ERROR;
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return 0;
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}
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inBytes=(const uint8_t *)inData+headerSize;
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inEntries=(const UDataOffsetTOCEntry *)(inBytes+4);
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if(length<0) {
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/* preflighting */
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itemCount=ds->readUInt32(*(const uint32_t *)inBytes);
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if(itemCount==0) {
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/* no items: count only the item count and return */
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return headerSize+4;
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}
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/* read the last item's offset and preflight it */
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offset=ds->readUInt32(inEntries[itemCount-1].dataOffset);
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itemLength=udata_swap(ds, inBytes+offset, -1, NULL, pErrorCode);
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if(U_SUCCESS(*pErrorCode)) {
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return headerSize+offset+(uint32_t)itemLength;
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} else {
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return 0;
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}
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} else {
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/* check that the itemCount fits, then the ToC table, then at least the header of the last item */
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length-=headerSize;
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if(length<4) {
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/* itemCount does not fit */
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offset=0xffffffff;
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itemCount=0; /* make compilers happy */
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} else {
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itemCount=ds->readUInt32(*(const uint32_t *)inBytes);
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if(itemCount==0) {
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offset=4;
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} else if((uint32_t)length<(4+8*itemCount)) {
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/* ToC table does not fit */
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offset=0xffffffff;
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} else {
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/* offset of the last item plus at least 20 bytes for its header */
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offset=20+ds->readUInt32(inEntries[itemCount-1].dataOffset);
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}
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}
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if((uint32_t)length<offset) {
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udata_printError(ds, "udata_swapPackage(): too few bytes (%d after header) for unames.icu\n",
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length);
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*pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
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return 0;
|
|
}
|
|
|
|
outBytes=(uint8_t *)outData+headerSize;
|
|
|
|
/* swap the item count */
|
|
ds->swapArray32(ds, inBytes, 4, outBytes, pErrorCode);
|
|
|
|
if(itemCount==0) {
|
|
/* no items: just return now */
|
|
return headerSize+4;
|
|
}
|
|
|
|
/* swap the item name strings */
|
|
offset=4+8*itemCount;
|
|
itemLength=(int32_t)(ds->readUInt32(inEntries[0].dataOffset)-offset);
|
|
udata_swapInvStringBlock(ds, inBytes+offset, itemLength, outBytes+offset, pErrorCode);
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
udata_printError(ds, "udata_swapPackage() failed to swap the data item name strings\n");
|
|
return 0;
|
|
}
|
|
/* keep offset and itemLength in case we allocate and copy the strings below */
|
|
|
|
/*
|
|
* Allocate the ToC table and, if necessary, a temporary buffer for
|
|
* pseudo-in-place swapping.
|
|
*
|
|
* We cannot swap in-place because:
|
|
*
|
|
* 1. If the swapping of an item fails mid-way, then in-place swapping
|
|
* has destroyed its data.
|
|
* Out-of-place swapping allows us to then copy its original data.
|
|
*
|
|
* 2. If swapping changes the charset family, then we must resort
|
|
* not only the ToC table but also the data items themselves.
|
|
* This requires a permutation and is best done with separate in/out
|
|
* buffers.
|
|
*
|
|
* We swapped the strings above to avoid the malloc below if string swapping fails.
|
|
*/
|
|
if(inData==outData) {
|
|
/* +15: prepare for extra padding of a newly-last item */
|
|
table=(ToCEntry *)uprv_malloc(itemCount*sizeof(ToCEntry)+length+15);
|
|
if(table!=NULL) {
|
|
outBytes=(uint8_t *)(table+itemCount);
|
|
|
|
/* copy the item count and the swapped strings */
|
|
uprv_memcpy(outBytes, inBytes, 4);
|
|
uprv_memcpy(outBytes+offset, inBytes+offset, itemLength);
|
|
}
|
|
} else {
|
|
table=(ToCEntry *)uprv_malloc(itemCount*sizeof(ToCEntry));
|
|
}
|
|
if(table==NULL) {
|
|
udata_printError(ds, "udata_swapPackage(): out of memory allocating %d bytes\n",
|
|
inData==outData ?
|
|
itemCount*sizeof(ToCEntry)+length+15 :
|
|
itemCount*sizeof(ToCEntry));
|
|
*pErrorCode=U_MEMORY_ALLOCATION_ERROR;
|
|
return 0;
|
|
}
|
|
outEntries=(UDataOffsetTOCEntry *)(outBytes+4);
|
|
|
|
/* read the ToC table */
|
|
for(i=0; i<itemCount; ++i) {
|
|
table[i].nameOffset=ds->readUInt32(inEntries[i].nameOffset);
|
|
table[i].inOffset=ds->readUInt32(inEntries[i].dataOffset);
|
|
if(i>0) {
|
|
table[i-1].length=table[i].inOffset-table[i-1].inOffset;
|
|
}
|
|
}
|
|
table[itemCount-1].length=(uint32_t)length-table[itemCount-1].inOffset;
|
|
|
|
if(ds->inCharset==ds->outCharset) {
|
|
/* no charset swapping, no resorting: keep item offsets the same */
|
|
for(i=0; i<itemCount; ++i) {
|
|
table[i].outOffset=table[i].inOffset;
|
|
}
|
|
} else {
|
|
/* charset swapping: resort items by their swapped names */
|
|
|
|
/*
|
|
* Before the actual sorting, we need to make sure that each item
|
|
* has a length that is a multiple of 16 bytes so that all items
|
|
* are 16-aligned.
|
|
* Only the old last item may be missing up to 15 padding bytes.
|
|
* Add padding bytes for it.
|
|
* Since the icuswap main() function has already allocated enough
|
|
* input buffer space and set the last 15 bytes there to 0xaa,
|
|
* we only need to increase the total data length and the length
|
|
* of the last item here.
|
|
*/
|
|
if((length&0xf)!=0) {
|
|
int32_t delta=16-(length&0xf);
|
|
length+=delta;
|
|
table[itemCount-1].length+=(uint32_t)delta;
|
|
}
|
|
|
|
uprv_sortArray(table, (int32_t)itemCount, (int32_t)sizeof(ToCEntry),
|
|
compareToCEntries, outBytes, FALSE, pErrorCode);
|
|
|
|
/*
|
|
* Note: Before sorting, the inOffset values were in order.
|
|
* Now the outOffset values are in order.
|
|
*/
|
|
|
|
/* assign outOffset values */
|
|
offset=table[0].inOffset;
|
|
for(i=0; i<itemCount; ++i) {
|
|
table[i].outOffset=offset;
|
|
offset+=table[i].length;
|
|
}
|
|
}
|
|
|
|
/* write the output ToC table */
|
|
for(i=0; i<itemCount; ++i) {
|
|
ds->writeUInt32(&outEntries[i].nameOffset, table[i].nameOffset);
|
|
ds->writeUInt32(&outEntries[i].dataOffset, table[i].outOffset);
|
|
}
|
|
|
|
/* swap each data item */
|
|
for(i=0; i<itemCount; ++i) {
|
|
/* first copy the item bytes to make sure that unreachable bytes are copied */
|
|
uprv_memcpy(outBytes+table[i].outOffset, inBytes+table[i].inOffset, table[i].length);
|
|
|
|
/* swap the item */
|
|
udata_swap(ds, inBytes+table[i].inOffset, (int32_t)table[i].length,
|
|
outBytes+table[i].outOffset, pErrorCode);
|
|
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
if(ds->outCharset==U_CHARSET_FAMILY) {
|
|
udata_printError(ds, "warning: udata_swapPackage() failed to swap item \"%s\"\n"
|
|
" at inOffset 0x%x length 0x%x - %s\n"
|
|
" the data item will be copied, not swapped\n\n",
|
|
(char *)outBytes+table[i].nameOffset,
|
|
table[i].inOffset, table[i].length, u_errorName(*pErrorCode));
|
|
} else {
|
|
udata_printError(ds, "warning: udata_swapPackage() failed to swap an item\n"
|
|
" at inOffset 0x%x length 0x%x - %s\n"
|
|
" the data item will be copied, not swapped\n\n",
|
|
table[i].inOffset, table[i].length, u_errorName(*pErrorCode));
|
|
}
|
|
/* reset the error code, copy the data item, and continue */
|
|
*pErrorCode=U_ZERO_ERROR;
|
|
uprv_memcpy(outBytes+table[i].outOffset, inBytes+table[i].inOffset, table[i].length);
|
|
}
|
|
}
|
|
|
|
if(inData==outData) {
|
|
/* copy the data from the temporary buffer to the in-place buffer */
|
|
uprv_memcpy((uint8_t *)outData+headerSize, outBytes, length);
|
|
}
|
|
uprv_free(table);
|
|
|
|
return headerSize+length;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Hey, Emacs, please set the following:
|
|
*
|
|
* Local Variables:
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
*/
|