git/diff.h

/*
 * Copyright (C) 2005 Junio C Hamano
 */
#ifndef DIFF_H
#define DIFF_H

extern void diff_addremove(int addremove,
			   unsigned mode,
			   const unsigned char *sha1,
			   const char *base,
			   const char *path);

extern void diff_change(unsigned mode1, unsigned mode2,
			     const unsigned char *sha1,
			     const unsigned char *sha2,
			     const char *base, const char *path);

extern void diff_helper_input(unsigned mode1,
			      unsigned mode2,
			      const unsigned char *sha1,
			      const unsigned char *sha2,
			      const char *path1,
			      int status,
			      int score,
			      const char *path2);

extern void diff_unmerge(const char *path);

extern int diff_scoreopt_parse(const char *opt);

#define DIFF_FORMAT_HUMAN	0
#define DIFF_FORMAT_MACHINE	1
#define DIFF_FORMAT_PATCH	2
#define DIFF_FORMAT_NO_OUTPUT	3
extern void diff_setup(int reverse);

#define DIFF_DETECT_RENAME	1
#define DIFF_DETECT_COPY	2

extern void diffcore_rename(int rename_copy, int minimum_score);

extern void diffcore_pickaxe(const char *needle);
extern void diffcore_pathspec(const char **pathspec);

extern int diff_queue_is_empty(void);

extern void diff_flush(int output_style, int resolve_rename_copy);

#endif /* DIFF_H */
[PATCH] Diff-tree-helper take two. This reworks the diff-tree-helper and show-diff to further make external diff command interface simpler. These commands now honor GIT_EXTERNAL_DIFF environment variable which can point at an arbitrary program that takes 7 parameters: name file1 file1-sha1 file1-mode file2 file2-sha1 file2-mode The parameters for an external diff command are as follows: name this invocation of the command is to emit diff for the named cache/tree entry. file1 pathname that holds the contents of the first file. This can be a file inside the working tree, or a temporary file created from the blob object, or /dev/null. The command should not attempt to unlink it -- the temporary is unlinked by the caller. file1-sha1 sha1 hash if file1 is a blob object, or "." otherwise. file1-mode mode bits for file1, or "." for a deleted file. If GIT_EXTERNAL_DIFF environment variable is not set, the default is to invoke diff with the set of parameters old show-diff used to use. This built-in implementation honors the GIT_DIFF_CMD and GIT_DIFF_OPTS environment variables as before. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 20 years ago			`/*`
			`* Copyright (C) 2005 Junio C Hamano`
			`*/`
[PATCH] Split external diff command interface to a separate file. With this patch, the non-core'ish part of show-diff command that invokes an external "diff" comand to obtain patches is split into a separate file. The next patch will introduce a new command, diff-tree-helper, which uses this common diff interface to format diff-tree and diff-cache output into a patch form. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 20 years ago			`#ifndef DIFF_H`
			`#define DIFF_H`

[PATCH] Reworked external diff interface. This introduces three public functions for diff-cache and friends can use to call out to the GIT_EXTERNAL_DIFF program when they wish to. A normal "add/remove/change" entry is turned into 7-parameter process invocation of GIT_EXTERNAL_DIFF program as before. In addition, the program can now be called with a single parameter when diff-cache and friends want to report an unmerged path. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 20 years ago			`extern void diff_addremove(int addremove,`
			`unsigned mode,`
			`const unsigned char *sha1,`
			`const char *base,`
			`const char *path);`

			`extern void diff_change(unsigned mode1, unsigned mode2,`
			`const unsigned char *sha1,`
			`const unsigned char *sha2,`
			`const char base, const char path);`

[PATCH] diff-raw format update take #2. This changes the diff-raw format again, following the mailing list discussion. The new format explicitly expresses which one is a rename and which one is a copy. The documentation and tests are updated to match this change. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 20 years ago			`extern void diff_helper_input(unsigned mode1,`
			`unsigned mode2,`
			`const unsigned char *sha1,`
			`const unsigned char *sha2,`
			`const char *path1,`
			`int status,`
			`int score,`
			`const char *path2);`
[PATCH] The diff-raw format updates. Update the diff-raw format as Linus and I discussed, except that it does not use sequence of underscore '_' letters to express nonexistence. All '0' mode is used for that purpose instead. The new diff-raw format can express rename/copy, and the earlier restriction that -M and -C _must_ be used with the patch format output is no longer necessary. The patch makes -M and -C flags independent of -p flag, so you need to say git-whatchanged -M -p to get the diff/patch format. Updated are both documentations and tests. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 20 years ago
[PATCH] Reworked external diff interface. This introduces three public functions for diff-cache and friends can use to call out to the GIT_EXTERNAL_DIFF program when they wish to. A normal "add/remove/change" entry is turned into 7-parameter process invocation of GIT_EXTERNAL_DIFF program as before. In addition, the program can now be called with a single parameter when diff-cache and friends want to report an unmerged path. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 20 years ago			`extern void diff_unmerge(const char *path);`

[PATCH] diff overhaul This cleans up the way calls are made into the diff core from diff-tree family and diff-helper. Earlier, these programs had "if (generating_patch)" sprinkled all over the place, but those ugliness are gone and handled uniformly from the diff core, even when not generating patch format. This also allowed diff-cache and diff-files to acquire -R (reverse) option to generate diff in reverse. Users of diff-tree can swap two trees easily so I did not add -R there. [ Linus' note: I'll add -R to "diff-tree" too, since a "commit diff" doesn't have another tree to switch around: the other tree is always the parent(s) of the commit ] Also -M<digits-as-mantissa> suggestion made by Linus has been implemented. Documentation updates are also included. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 20 years ago			`extern int diff_scoreopt_parse(const char *opt);`

[PATCH] Diffcore updates. This moves the path selection logic from individual programs to a new diffcore transformer (diff-tree still needs to have its own for performance reasons). Also the header printing code in diff-tree was tweaked not to produce anything when pickaxe is in effect and there is nothing interesting to report. An interesting example is the following in the GIT archive itself: $ git-whatchanged -p -C -S'or something in a real script' Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 20 years ago			`#define DIFF_FORMAT_HUMAN 0`
			`#define DIFF_FORMAT_MACHINE 1`
			`#define DIFF_FORMAT_PATCH 2`
			`#define DIFF_FORMAT_NO_OUTPUT 3`
			`extern void diff_setup(int reverse);`
[PATCH] Split external diff command interface to a separate file. With this patch, the non-core'ish part of show-diff command that invokes an external "diff" comand to obtain patches is split into a separate file. The next patch will introduce a new command, diff-tree-helper, which uses this common diff interface to format diff-tree and diff-cache output into a patch form. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 20 years ago
[PATCH] Diffcore updates. This moves the path selection logic from individual programs to a new diffcore transformer (diff-tree still needs to have its own for performance reasons). Also the header printing code in diff-tree was tweaked not to produce anything when pickaxe is in effect and there is nothing interesting to report. An interesting example is the following in the GIT archive itself: $ git-whatchanged -p -C -S'or something in a real script' Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 20 years ago			`#define DIFF_DETECT_RENAME 1`
			`#define DIFF_DETECT_COPY 2`

			`extern void diffcore_rename(int rename_copy, int minimum_score);`

			`extern void diffcore_pickaxe(const char *needle);`
			`extern void diffcore_pathspec(const char **pathspec);`
[PATCH] Prepare diffcore interface for diff-tree header supression. This does not actually supress the extra headers when pickaxe is used, but prepares enough support for diff-tree to implement it. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 20 years ago
			`extern int diff_queue_is_empty(void);`

[PATCH] diff-raw format update take #2. This changes the diff-raw format again, following the mailing list discussion. The new format explicitly expresses which one is a rename and which one is a copy. The documentation and tests are updated to match this change. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 20 years ago			`extern void diff_flush(int output_style, int resolve_rename_copy);`
[PATCH] Split external diff command interface to a separate file. With this patch, the non-core'ish part of show-diff command that invokes an external "diff" comand to obtain patches is split into a separate file. The next patch will introduce a new command, diff-tree-helper, which uses this common diff interface to format diff-tree and diff-cache output into a patch form. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 20 years ago
			`#endif /* DIFF_H */`