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Subversion
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Subversion
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Delta-parsing. More...
#include <apr.h>#include <apr_pools.h>#include <apr_hash.h>#include <apr_tables.h>#include <apr_file_io.h>#include "svn_types.h"#include "svn_string.h"#include "svn_io.h"#include "svn_checksum.h"Go to the source code of this file.
Data Structures | |
| struct | svn_txdelta_op_t |
| A single text delta instruction. More... | |
| struct | svn_txdelta_window_t |
| An svn_txdelta_window_t object describes how to reconstruct a contiguous section of the target string (the "target view") using a specified contiguous region of the source string (the "source
view"). More... | |
| struct | svn_delta_editor_t |
| A structure full of callback functions the delta source will invoke as it produces the delta. More... | |
Macros | |
| #define | SVN_DELTA_COMPRESSION_LEVEL_NONE 0 |
| This compression level effectively disables data compression. More... | |
| #define | SVN_DELTA_COMPRESSION_LEVEL_MAX 9 |
| This is the maximum compression level we can pass to zlib. More... | |
| #define | SVN_DELTA_COMPRESSION_LEVEL_DEFAULT 5 |
| This is the default compression level we pass to zlib. More... | |
Typedefs | |
| typedef struct svn_txdelta_op_t | svn_txdelta_op_t |
| A single text delta instruction. More... | |
| typedef struct svn_txdelta_window_t | svn_txdelta_window_t |
| An svn_txdelta_window_t object describes how to reconstruct a contiguous section of the target string (the "target view") using a specified contiguous region of the source string (the "source
view"). More... | |
| typedef svn_error_t *(* | svn_txdelta_window_handler_t) (svn_txdelta_window_t *window, void *baton) |
| A typedef for functions that consume a series of delta windows, for use in caller-pushes interfaces. More... | |
| typedef struct svn_txdelta_stream_t | svn_txdelta_stream_t |
| A delta stream — this is the hat from which we pull a series of svn_txdelta_window_t objects, which, taken in order, describe the entire target string. More... | |
| typedef svn_error_t *(* | svn_txdelta_next_window_fn_t) (svn_txdelta_window_t **window, void *baton, apr_pool_t *pool) |
| A typedef for a function that will set *window to the next window from a svn_txdelta_stream_t object. More... | |
| typedef const unsigned char *(* | svn_txdelta_md5_digest_fn_t) (void *baton) |
| A typedef for a function that will return the md5 checksum of the fulltext deltified by a svn_txdelta_stream_t object. More... | |
| typedef svn_error_t *(* | svn_txdelta_stream_open_func_t) (svn_txdelta_stream_t **txdelta_stream, void *baton, apr_pool_t *result_pool, apr_pool_t *scratch_pool) |
| A typedef for a function that opens an svn_txdelta_stream_t object, allocated in result_pool. More... | |
| typedef struct svn_delta_editor_t | svn_delta_editor_t |
| A structure full of callback functions the delta source will invoke as it produces the delta. More... | |
| typedef svn_error_t *(* | svn_delta_path_driver_cb_func2_t) (void **dir_baton, const svn_delta_editor_t *editor, void *edit_baton, void *parent_baton, void *callback_baton, const char *relpath, apr_pool_t *pool) |
| Callback function type for svn_delta_path_driver(). More... | |
| typedef svn_error_t *(* | svn_delta_path_driver_cb_func_t) (void **dir_baton, void *parent_baton, void *callback_baton, const char *path, apr_pool_t *pool) |
| Like svn_delta_path_driver_cb_func2_t but without the editor and edit_baton parameters. More... | |
| typedef struct svn_delta_path_driver_state_t | svn_delta_path_driver_state_t |
| A state object for the path driver that is obtained from svn_delta_path_driver_start() and driven by svn_delta_path_driver_step() and svn_delta_path_driver_finish(). More... | |
| typedef svn_error_t *(* | svn_file_rev_handler_t) (void *baton, const char *path, svn_revnum_t rev, apr_hash_t *rev_props, svn_boolean_t result_of_merge, svn_txdelta_window_handler_t *delta_handler, void **delta_baton, apr_array_header_t *prop_diffs, apr_pool_t *pool) |
| The callback invoked by file rev loopers, such as svn_ra_plugin_t.get_file_revs2() and svn_repos_get_file_revs2(). More... | |
| typedef svn_error_t *(* | svn_file_rev_handler_old_t) (void *baton, const char *path, svn_revnum_t rev, apr_hash_t *rev_props, svn_txdelta_window_handler_t *delta_handler, void **delta_baton, apr_array_header_t *prop_diffs, apr_pool_t *pool) |
| The old file rev handler interface. More... | |
Enumerations | |
| enum | svn_delta_action { svn_txdelta_source, svn_txdelta_target, svn_txdelta_new } |
| Action codes for text delta instructions. More... | |
Functions | |
| const svn_version_t * | svn_delta_version (void) |
| Get libsvn_delta version information. More... | |
| svn_txdelta_window_t * | svn_txdelta_window_dup (const svn_txdelta_window_t *window, apr_pool_t *pool) |
| Return a deep copy of window, allocated in pool. More... | |
| svn_txdelta_window_t * | svn_txdelta_compose_windows (const svn_txdelta_window_t *window_A, const svn_txdelta_window_t *window_B, apr_pool_t *pool) |
| Compose two delta windows, yielding a third, allocated in pool. More... | |
| void | svn_txdelta_apply_instructions (svn_txdelta_window_t *window, const char *sbuf, char *tbuf, apr_size_t *tlen) |
| Apply the instructions from window to a source view sbuf to produce a target view tbuf. More... | |
| svn_error_t * | svn_txdelta_run (svn_stream_t *source, svn_stream_t *target, svn_txdelta_window_handler_t handler, void *handler_baton, svn_checksum_kind_t checksum_kind, svn_checksum_t **checksum, svn_cancel_func_t cancel_func, void *cancel_baton, apr_pool_t *result_pool, apr_pool_t *scratch_pool) |
| This function will generate delta windows that turn source into target, and pushing these windows into the handler window handler callback (passing handler_baton to each invocation). More... | |
| svn_txdelta_stream_t * | svn_txdelta_stream_create (void *baton, svn_txdelta_next_window_fn_t next_window, svn_txdelta_md5_digest_fn_t md5_digest, apr_pool_t *pool) |
| Create and return a generic text delta stream with baton, next_window and md5_digest. More... | |
| svn_error_t * | svn_txdelta_next_window (svn_txdelta_window_t **window, svn_txdelta_stream_t *stream, apr_pool_t *pool) |
| Set *window to a pointer to the next window from the delta stream stream. More... | |
| const unsigned char * | svn_txdelta_md5_digest (svn_txdelta_stream_t *stream) |
Return the md5 digest for the complete fulltext deltified by stream, or NULL if stream has not yet returned its final NULL window. More... | |
| void | svn_txdelta2 (svn_txdelta_stream_t **stream, svn_stream_t *source, svn_stream_t *target, svn_boolean_t calculate_checksum, apr_pool_t *pool) |
| Set *stream to a pointer to a delta stream that will turn the byte string from source into the byte stream from target. More... | |
| void | svn_txdelta (svn_txdelta_stream_t **stream, svn_stream_t *source, svn_stream_t *target, apr_pool_t *pool) |
| Similar to svn_txdelta2 but always calculating the target checksum. More... | |
| svn_stream_t * | svn_txdelta_target_push (svn_txdelta_window_handler_t handler, void *handler_baton, svn_stream_t *source, apr_pool_t *pool) |
| Return a writable stream which, when fed target data, will send delta windows to handler/handler_baton which transform the data in source to the target data. More... | |
| svn_error_t * | svn_txdelta_send_string (const svn_string_t *string, svn_txdelta_window_handler_t handler, void *handler_baton, apr_pool_t *pool) |
| Send the contents of string to window-handler handler/baton. More... | |
| svn_error_t * | svn_txdelta_send_stream (svn_stream_t *stream, svn_txdelta_window_handler_t handler, void *handler_baton, unsigned char *digest, apr_pool_t *pool) |
| Send the contents of stream to window-handler handler/baton. More... | |
| svn_error_t * | svn_txdelta_send_txstream (svn_txdelta_stream_t *txstream, svn_txdelta_window_handler_t handler, void *handler_baton, apr_pool_t *pool) |
| Send the contents of txstream to window-handler handler/baton. More... | |
| svn_error_t * | svn_txdelta_send_contents (const unsigned char *contents, apr_size_t len, svn_txdelta_window_handler_t handler, void *handler_baton, apr_pool_t *pool) |
| Send the contents of length len as a txdelta against an empty source directly to window-handler handler/handler_baton. More... | |
| void | svn_txdelta_apply (svn_stream_t *source, svn_stream_t *target, unsigned char *result_digest, const char *error_info, apr_pool_t *pool, svn_txdelta_window_handler_t *handler, void **handler_baton) |
| Prepare to apply a text delta. More... | |
| void | svn_txdelta_to_svndiff3 (svn_txdelta_window_handler_t *handler, void **handler_baton, svn_stream_t *output, int svndiff_version, int compression_level, apr_pool_t *pool) |
| Prepare to produce an svndiff-format diff from text delta windows. More... | |
| void | svn_txdelta_to_svndiff2 (svn_txdelta_window_handler_t *handler, void **handler_baton, svn_stream_t *output, int svndiff_version, apr_pool_t *pool) |
| Similar to svn_txdelta_to_svndiff3(), but always using the SVN default compression level (SVN_DELTA_COMPRESSION_LEVEL_DEFAULT). More... | |
| void | svn_txdelta_to_svndiff (svn_stream_t *output, apr_pool_t *pool, svn_txdelta_window_handler_t *handler, void **handler_baton) |
| Similar to svn_txdelta_to_svndiff2, but always using svndiff version 0. More... | |
| svn_stream_t * | svn_txdelta_to_svndiff_stream (svn_txdelta_stream_t *txstream, int svndiff_version, int compression_level, apr_pool_t *pool) |
| Return a readable generic stream which will produce svndiff-encoded text delta from the delta stream txstream. More... | |
| svn_stream_t * | svn_txdelta_parse_svndiff (svn_txdelta_window_handler_t handler, void *handler_baton, svn_boolean_t error_on_early_close, apr_pool_t *pool) |
| Return a writable generic stream which will parse svndiff-format data into a text delta, invoking handler with handler_baton whenever a new window is ready. More... | |
| svn_error_t * | svn_txdelta_read_svndiff_window (svn_txdelta_window_t **window, svn_stream_t *stream, int svndiff_version, apr_pool_t *pool) |
| Read and parse one delta window in svndiff format from the readable stream stream and place it in *window, allocating the result in pool. More... | |
| svn_error_t * | svn_txdelta_skip_svndiff_window (apr_file_t *file, int svndiff_version, apr_pool_t *pool) |
| Read and skip one delta window in svndiff format from the file file. More... | |
| svn_delta_editor_t * | svn_delta_default_editor (apr_pool_t *pool) |
| Return a default delta editor template, allocated in pool. More... | |
| svn_error_t * | svn_delta_noop_window_handler (svn_txdelta_window_t *window, void *baton) |
| A text-delta window handler which does nothing. More... | |
| svn_error_t * | svn_delta_get_cancellation_editor (svn_cancel_func_t cancel_func, void *cancel_baton, const svn_delta_editor_t *wrapped_editor, void *wrapped_baton, const svn_delta_editor_t **editor, void **edit_baton, apr_pool_t *pool) |
| Set *editor and *edit_baton to a cancellation editor that wraps wrapped_editor and wrapped_baton. More... | |
| svn_error_t * | svn_delta_depth_filter_editor (const svn_delta_editor_t **editor, void **edit_baton, const svn_delta_editor_t *wrapped_editor, void *wrapped_edit_baton, svn_depth_t requested_depth, svn_boolean_t has_target, apr_pool_t *pool) |
| Set *editor and *edit_baton to an depth-based filtering editor that wraps wrapped_editor and wrapped_baton. More... | |
| svn_error_t * | svn_delta_path_driver3 (const svn_delta_editor_t *editor, void *edit_baton, const apr_array_header_t *relpaths, svn_boolean_t sort_paths, svn_delta_path_driver_cb_func2_t callback_func, void *callback_baton, apr_pool_t *pool) |
| Drive editor (with its edit_baton) to visit each path in relpaths. More... | |
| svn_error_t * | svn_delta_path_driver2 (const svn_delta_editor_t *editor, void *edit_baton, const apr_array_header_t *paths, svn_boolean_t sort_paths, svn_delta_path_driver_cb_func_t callback_func, void *callback_baton, apr_pool_t *scratch_pool) |
| Like svn_delta_path_driver3() but with a different callback function signature. More... | |
| svn_error_t * | svn_delta_path_driver (const svn_delta_editor_t *editor, void *edit_baton, svn_revnum_t revision, const apr_array_header_t *paths, svn_delta_path_driver_cb_func_t callback_func, void *callback_baton, apr_pool_t *scratch_pool) |
| Similar to svn_delta_path_driver2, but takes an (unused) revision, and will sort the provided paths using svn_sort_compare_paths. More... | |
| svn_error_t * | svn_delta_path_driver_start (svn_delta_path_driver_state_t **state_p, const svn_delta_editor_t *editor, void *edit_baton, svn_delta_path_driver_cb_func2_t callback_func, void *callback_baton, apr_pool_t *result_pool) |
| Return a path driver object that can drive editor (with its edit_baton) to visit a series of paths. More... | |
| svn_error_t * | svn_delta_path_driver_step (svn_delta_path_driver_state_t *state, const char *relpath, apr_pool_t *scratch_pool) |
| Visit relpath. More... | |
| svn_error_t * | svn_delta_path_driver_finish (svn_delta_path_driver_state_t *state, apr_pool_t *scratch_pool) |
| Finish driving the editor. More... | |
| void | svn_compat_wrap_file_rev_handler (svn_file_rev_handler_t *handler2, void **handler2_baton, svn_file_rev_handler_old_t handler, void *handler_baton, apr_pool_t *pool) |
| Return, in *handler2 and *handler2_baton a function/baton that will call handler/handler_baton, allocating the *handler2_baton in pool. More... | |
Delta-parsing.
Definition in file svn_delta.h.
| #define SVN_DELTA_COMPRESSION_LEVEL_DEFAULT 5 |
This is the default compression level we pass to zlib.
It should be between 0 and 9, with higher numbers resulting in better compression rates but slower operation.
Definition at line 70 of file svn_delta.h.
| #define SVN_DELTA_COMPRESSION_LEVEL_MAX 9 |
This is the maximum compression level we can pass to zlib.
Definition at line 62 of file svn_delta.h.
| #define SVN_DELTA_COMPRESSION_LEVEL_NONE 0 |
This compression level effectively disables data compression.
However, the data pre-processing costs may still not be zero.
Definition at line 56 of file svn_delta.h.
| const svn_version_t* svn_delta_version | ( | void | ) |
Get libsvn_delta version information.
1.8.13