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- /*
- * 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"
- 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:
- Iter();
- Iter(const char path[], const char suffix[] = nullptr);
- ~Iter();
- 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.
- */
- bool next(SkString* name, bool getDir = false);
- static const size_t kStorageSize = 40;
- private:
- SkAlignedSStorage<kStorageSize> fSelf;
- };
- };
- #endif
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