diff options
Diffstat (limited to 'gfx/skia/skia/src/core/SkOSFile.h')
-rw-r--r-- | gfx/skia/skia/src/core/SkOSFile.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/gfx/skia/skia/src/core/SkOSFile.h b/gfx/skia/skia/src/core/SkOSFile.h new file mode 100644 index 0000000000..2f9eccf193 --- /dev/null +++ b/gfx/skia/skia/src/core/SkOSFile.h @@ -0,0 +1,101 @@ +/* + * Copyright 2006 The Android Open Source Project + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + + +// TODO: add unittests for all these operations + +#ifndef SkOSFile_DEFINED +#define SkOSFile_DEFINED + +#include <stdio.h> + +#include "include/core/SkString.h" +#include "include/private/base/SkTemplates.h" + +enum SkFILE_Flags { + kRead_SkFILE_Flag = 0x01, + kWrite_SkFILE_Flag = 0x02 +}; + +FILE* sk_fopen(const char path[], SkFILE_Flags); +void sk_fclose(FILE*); + +size_t sk_fgetsize(FILE*); + +size_t sk_fwrite(const void* buffer, size_t byteCount, FILE*); + +void sk_fflush(FILE*); +void sk_fsync(FILE*); + +size_t sk_ftell(FILE*); + +/** Maps a file into memory. Returns the address and length on success, NULL otherwise. + * The mapping is read only. + * When finished with the mapping, free the returned pointer with sk_fmunmap. + */ +void* sk_fmmap(FILE* f, size_t* length); + +/** Maps a file descriptor into memory. Returns the address and length on success, NULL otherwise. + * The mapping is read only. + * When finished with the mapping, free the returned pointer with sk_fmunmap. + */ +void* sk_fdmmap(int fd, size_t* length); + +/** Unmaps a file previously mapped by sk_fmmap or sk_fdmmap. + * The length parameter must be the same as returned from sk_fmmap. + */ +void sk_fmunmap(const void* addr, size_t length); + +/** Returns true if the two point at the exact same filesystem object. */ +bool sk_fidentical(FILE* a, FILE* b); + +/** Returns the underlying file descriptor for the given file. + * The return value will be < 0 on failure. + */ +int sk_fileno(FILE* f); + +/** Returns true if something (file, directory, ???) exists at this path, + * and has the specified access flags. + */ +bool sk_exists(const char *path, SkFILE_Flags = (SkFILE_Flags)0); + +// Returns true if a directory exists at this path. +bool sk_isdir(const char *path); + +// Like pread, but may affect the file position marker. +// Returns the number of bytes read or SIZE_MAX if failed. +size_t sk_qread(FILE*, void* buffer, size_t count, size_t offset); + + +// Create a new directory at this path; returns true if successful. +// If the directory already existed, this will return true. +// Description of the error, if any, will be written to stderr. +bool sk_mkdir(const char* path); + +class SkOSFile { +public: + class Iter { + public: + // SPI for module use. + SK_SPI Iter(); + SK_SPI Iter(const char path[], const char suffix[] = nullptr); + SK_SPI ~Iter(); + + SK_SPI void reset(const char path[], const char suffix[] = nullptr); + /** If getDir is true, only returns directories. + Results are undefined if true and false calls are + interleaved on a single iterator. + */ + SK_SPI bool next(SkString* name, bool getDir = false); + + static const size_t kStorageSize = 40; + private: + alignas(void*) alignas(double) char fSelf[kStorageSize]; + }; +}; + +#endif |