4d1955c43a
Change-Id: I8c66e4e3e857227aed3d0bc497982f4c0d96d917 Reviewed-on: https://skia-review.googlesource.com/9498 Commit-Queue: Ben Wagner <bungeman@google.com> Reviewed-by: Leon Scroggins <scroggo@google.com>
100 lines
2.8 KiB
C++
100 lines
2.8 KiB
C++
/*
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* Copyright 2006 The Android Open Source Project
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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// TODO: add unittests for all these operations
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#ifndef SkOSFile_DEFINED
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#define SkOSFile_DEFINED
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#include <stdio.h>
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#include "SkString.h"
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enum SkFILE_Flags {
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kRead_SkFILE_Flag = 0x01,
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kWrite_SkFILE_Flag = 0x02
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};
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FILE* sk_fopen(const char path[], SkFILE_Flags);
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void sk_fclose(FILE*);
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size_t sk_fgetsize(FILE*);
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size_t sk_fwrite(const void* buffer, size_t byteCount, FILE*);
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void sk_fflush(FILE*);
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void sk_fsync(FILE*);
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size_t sk_ftell(FILE*);
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/** Maps a file into memory. Returns the address and length on success, NULL otherwise.
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* The mapping is read only.
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* When finished with the mapping, free the returned pointer with sk_fmunmap.
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*/
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void* sk_fmmap(FILE* f, size_t* length);
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/** Maps a file descriptor into memory. Returns the address and length on success, NULL otherwise.
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* The mapping is read only.
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* When finished with the mapping, free the returned pointer with sk_fmunmap.
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*/
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void* sk_fdmmap(int fd, size_t* length);
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/** Unmaps a file previously mapped by sk_fmmap or sk_fdmmap.
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* The length parameter must be the same as returned from sk_fmmap.
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*/
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void sk_fmunmap(const void* addr, size_t length);
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/** Returns true if the two point at the exact same filesystem object. */
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bool sk_fidentical(FILE* a, FILE* b);
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/** Returns the underlying file descriptor for the given file.
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* The return value will be < 0 on failure.
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*/
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int sk_fileno(FILE* f);
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/** Returns true if something (file, directory, ???) exists at this path,
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* and has the specified access flags.
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*/
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bool sk_exists(const char *path, SkFILE_Flags = (SkFILE_Flags)0);
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// Returns true if a directory exists at this path.
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bool sk_isdir(const char *path);
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// Like pread, but may affect the file position marker.
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// Returns the number of bytes read or SIZE_MAX if failed.
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size_t sk_qread(FILE*, void* buffer, size_t count, size_t offset);
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// Create a new directory at this path; returns true if successful.
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// If the directory already existed, this will return true.
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// Description of the error, if any, will be written to stderr.
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bool sk_mkdir(const char* path);
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class SkOSFile {
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public:
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class Iter {
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public:
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Iter();
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Iter(const char path[], const char suffix[] = NULL);
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~Iter();
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void reset(const char path[], const char suffix[] = NULL);
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/** If getDir is true, only returns directories.
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Results are undefined if true and false calls are
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interleaved on a single iterator.
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*/
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bool next(SkString* name, bool getDir = false);
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static const size_t kStorageSize = 40;
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private:
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SkAlignedSStorage<kStorageSize> fSelf;
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};
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};
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#endif
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