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Diffstat (limited to 'include/git2/buffer.h')
-rw-r--r-- | include/git2/buffer.h | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/include/git2/buffer.h b/include/git2/buffer.h deleted file mode 100644 index 926f1332d..000000000 --- a/include/git2/buffer.h +++ /dev/null @@ -1,134 +0,0 @@ -/* - * Copyright (C) the libgit2 contributors. All rights reserved. - * - * This file is part of libgit2, distributed under the GNU GPL v2 with - * a Linking Exception. For full terms see the included COPYING file. - */ -#ifndef INCLUDE_git_buf_h__ -#define INCLUDE_git_buf_h__ - -#include "common.h" - -/** - * @file git2/buffer.h - * @brief Buffer export structure - * - * @ingroup Git - * @{ - */ -GIT_BEGIN_DECL - -/** - * A data buffer for exporting data from libgit2 - * - * Sometimes libgit2 wants to return an allocated data buffer to the - * caller and have the caller take responsibility for freeing that memory. - * This can be awkward if the caller does not have easy access to the same - * allocation functions that libgit2 is using. In those cases, libgit2 - * will fill in a `git_buf` and the caller can use `git_buf_dispose()` to - * release it when they are done. - * - * A `git_buf` may also be used for the caller to pass in a reference to - * a block of memory they hold. In this case, libgit2 will not resize or - * free the memory, but will read from it as needed. - * - * Some APIs may occasionally do something slightly unusual with a buffer, - * such as setting `ptr` to a value that was passed in by the user. In - * those cases, the behavior will be clearly documented by the API. - */ -typedef struct { - /** - * The buffer contents. - * - * `ptr` points to the start of the allocated memory. If it is NULL, - * then the `git_buf` is considered empty and libgit2 will feel free - * to overwrite it with new data. - */ - char *ptr; - - /** - * `asize` holds the known total amount of allocated memory if the `ptr` - * was allocated by libgit2. It may be larger than `size`. If `ptr` - * was not allocated by libgit2 and should not be resized and/or freed, - * then `asize` will be set to zero. - */ - size_t asize; - - /** - * `size` holds the size (in bytes) of the data that is actually used. - */ - size_t size; -} git_buf; - -/** - * Static initializer for git_buf from static buffer - */ -#define GIT_BUF_INIT_CONST(STR,LEN) { (char *)(STR), 0, (size_t)(LEN) } - -/** - * Free the memory referred to by the git_buf. - * - * Note that this does not free the `git_buf` itself, just the memory - * pointed to by `buffer->ptr`. This will not free the memory if it looks - * like it was not allocated internally, but it will clear the buffer back - * to the empty state. - * - * @param buffer The buffer to deallocate - */ -GIT_EXTERN(void) git_buf_dispose(git_buf *buffer); - -/** - * Resize the buffer allocation to make more space. - * - * This will attempt to grow the buffer to accommodate the target size. - * - * If the buffer refers to memory that was not allocated by libgit2 (i.e. - * the `asize` field is zero), then `ptr` will be replaced with a newly - * allocated block of data. Be careful so that memory allocated by the - * caller is not lost. As a special variant, if you pass `target_size` as - * 0 and the memory is not allocated by libgit2, this will allocate a new - * buffer of size `size` and copy the external data into it. - * - * Currently, this will never shrink a buffer, only expand it. - * - * If the allocation fails, this will return an error and the buffer will be - * marked as invalid for future operations, invaliding the contents. - * - * @param buffer The buffer to be resized; may or may not be allocated yet - * @param target_size The desired available size - * @return 0 on success, -1 on allocation failure - */ -GIT_EXTERN(int) git_buf_grow(git_buf *buffer, size_t target_size); - -/** - * Set buffer to a copy of some raw data. - * - * @param buffer The buffer to set - * @param data The data to copy into the buffer - * @param datalen The length of the data to copy into the buffer - * @return 0 on success, -1 on allocation failure - */ -GIT_EXTERN(int) git_buf_set( - git_buf *buffer, const void *data, size_t datalen); - -/** -* Check quickly if buffer looks like it contains binary data -* -* @param buf Buffer to check -* @return 1 if buffer looks like non-text data -*/ -GIT_EXTERN(int) git_buf_is_binary(const git_buf *buf); - -/** -* Check quickly if buffer contains a NUL byte -* -* @param buf Buffer to check -* @return 1 if buffer contains a NUL byte -*/ -GIT_EXTERN(int) git_buf_contains_nul(const git_buf *buf); - -GIT_END_DECL - -/** @} */ - -#endif |