[thirdparty/git.git] / diff.h

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

#include "tree-walk.h"

struct rev_info;
struct diff_options;
struct diff_queue_struct;
struct strbuf;
struct diff_filespec;
struct userdiff_driver;
struct sha1_array;
struct commit;

typedef void (*change_fn_t)(struct diff_options *options,
		 unsigned old_mode, unsigned new_mode,
		 const unsigned char *old_sha1,
		 const unsigned char *new_sha1,
		 int old_sha1_valid, int new_sha1_valid,
		 const char *fullpath,
		 unsigned old_dirty_submodule, unsigned new_dirty_submodule);

typedef void (*add_remove_fn_t)(struct diff_options *options,
		    int addremove, unsigned mode,
		    const unsigned char *sha1,
		    int sha1_valid,
		    const char *fullpath, unsigned dirty_submodule);

typedef void (*diff_format_fn_t)(struct diff_queue_struct *q,
		struct diff_options *options, void *data);

typedef struct strbuf *(*diff_prefix_fn_t)(struct diff_options *opt, void *data);

#define DIFF_FORMAT_RAW		0x0001
#define DIFF_FORMAT_DIFFSTAT	0x0002
#define DIFF_FORMAT_NUMSTAT	0x0004
#define DIFF_FORMAT_SUMMARY	0x0008
#define DIFF_FORMAT_PATCH	0x0010
#define DIFF_FORMAT_SHORTSTAT	0x0020
#define DIFF_FORMAT_DIRSTAT	0x0040

/* These override all above */
#define DIFF_FORMAT_NAME	0x0100
#define DIFF_FORMAT_NAME_STATUS	0x0200
#define DIFF_FORMAT_CHECKDIFF	0x0400

/* Same as output_format = 0 but we know that -s flag was given
 * and we should not give default value to output_format.
 */
#define DIFF_FORMAT_NO_OUTPUT	0x0800

#define DIFF_FORMAT_CALLBACK	0x1000

#define DIFF_OPT_RECURSIVE           (1 <<  0)
#define DIFF_OPT_TREE_IN_RECURSIVE   (1 <<  1)
#define DIFF_OPT_BINARY              (1 <<  2)
#define DIFF_OPT_TEXT                (1 <<  3)
#define DIFF_OPT_FULL_INDEX          (1 <<  4)
#define DIFF_OPT_SILENT_ON_REMOVE    (1 <<  5)
#define DIFF_OPT_FIND_COPIES_HARDER  (1 <<  6)
#define DIFF_OPT_FOLLOW_RENAMES      (1 <<  7)
#define DIFF_OPT_RENAME_EMPTY        (1 <<  8)
/* (1 <<  9) unused */
#define DIFF_OPT_HAS_CHANGES         (1 << 10)
#define DIFF_OPT_QUICK               (1 << 11)
#define DIFF_OPT_NO_INDEX            (1 << 12)
#define DIFF_OPT_ALLOW_EXTERNAL      (1 << 13)
#define DIFF_OPT_EXIT_WITH_STATUS    (1 << 14)
#define DIFF_OPT_REVERSE_DIFF        (1 << 15)
#define DIFF_OPT_CHECK_FAILED        (1 << 16)
#define DIFF_OPT_RELATIVE_NAME       (1 << 17)
#define DIFF_OPT_IGNORE_SUBMODULES   (1 << 18)
#define DIFF_OPT_DIRSTAT_CUMULATIVE  (1 << 19)
#define DIFF_OPT_DIRSTAT_BY_FILE     (1 << 20)
#define DIFF_OPT_ALLOW_TEXTCONV      (1 << 21)
#define DIFF_OPT_DIFF_FROM_CONTENTS  (1 << 22)
#define DIFF_OPT_SUBMODULE_LOG       (1 << 23)
#define DIFF_OPT_DIRTY_SUBMODULES    (1 << 24)
#define DIFF_OPT_IGNORE_UNTRACKED_IN_SUBMODULES (1 << 25)
#define DIFF_OPT_IGNORE_DIRTY_SUBMODULES (1 << 26)
#define DIFF_OPT_OVERRIDE_SUBMODULE_CONFIG (1 << 27)
#define DIFF_OPT_DIRSTAT_BY_LINE     (1 << 28)
#define DIFF_OPT_FUNCCONTEXT         (1 << 29)
#define DIFF_OPT_PICKAXE_IGNORE_CASE (1 << 30)

#define DIFF_OPT_TST(opts, flag)    ((opts)->flags & DIFF_OPT_##flag)
#define DIFF_OPT_SET(opts, flag)    ((opts)->flags |= DIFF_OPT_##flag)
#define DIFF_OPT_CLR(opts, flag)    ((opts)->flags &= ~DIFF_OPT_##flag)
#define DIFF_XDL_TST(opts, flag)    ((opts)->xdl_opts & XDF_##flag)
#define DIFF_XDL_SET(opts, flag)    ((opts)->xdl_opts |= XDF_##flag)
#define DIFF_XDL_CLR(opts, flag)    ((opts)->xdl_opts &= ~XDF_##flag)

#define DIFF_WITH_ALG(opts, flag)   (((opts)->xdl_opts & ~XDF_DIFF_ALGORITHM_MASK) | XDF_##flag)

enum diff_words_type {
	DIFF_WORDS_NONE = 0,
	DIFF_WORDS_PORCELAIN,
	DIFF_WORDS_PLAIN,
	DIFF_WORDS_COLOR
};

struct diff_options {
	const char *filter;
	const char *orderfile;
	const char *pickaxe;
	const char *single_follow;
	const char *a_prefix, *b_prefix;
	unsigned flags;
	int use_color;
	int context;
	int interhunkcontext;
	int break_opt;
	int detect_rename;
	int irreversible_delete;
	int skip_stat_unmatch;
	int line_termination;
	int output_format;
	int pickaxe_opts;
	int rename_score;
	int rename_limit;
	int needed_rename_limit;
	int degraded_cc_to_c;
	int show_rename_progress;
	int dirstat_permille;
	int setup;
	int abbrev;
	const char *prefix;
	int prefix_length;
	const char *stat_sep;
	long xdl_opts;

	int stat_width;
	int stat_name_width;
	int stat_graph_width;
	int stat_count;
	const char *word_regex;
	enum diff_words_type word_diff;

	/* this is set by diffcore for DIFF_FORMAT_PATCH */
	int found_changes;

	/* to support internal diff recursion by --follow hack*/
	int found_follow;

	FILE *file;
	int close_file;

	struct pathspec pathspec;
	change_fn_t change;
	add_remove_fn_t add_remove;
	diff_format_fn_t format_callback;
	void *format_callback_data;
	diff_prefix_fn_t output_prefix;
	int output_prefix_length;
	void *output_prefix_data;
};

enum color_diff {
	DIFF_RESET = 0,
	DIFF_PLAIN = 1,
	DIFF_METAINFO = 2,
	DIFF_FRAGINFO = 3,
	DIFF_FILE_OLD = 4,
	DIFF_FILE_NEW = 5,
	DIFF_COMMIT = 6,
	DIFF_WHITESPACE = 7,
	DIFF_FUNCINFO = 8
};
const char *diff_get_color(int diff_use_color, enum color_diff ix);
#define diff_get_color_opt(o, ix) \
	diff_get_color((o)->use_color, ix)


const char *diff_line_prefix(struct diff_options *);


extern const char mime_boundary_leader[];

extern void diff_tree_setup_paths(const char **paths, struct diff_options *);
extern void diff_tree_release_paths(struct diff_options *);
extern int diff_tree(struct tree_desc *t1, struct tree_desc *t2,
		     const char *base, struct diff_options *opt);
extern int diff_tree_sha1(const unsigned char *old, const unsigned char *new,
			  const char *base, struct diff_options *opt);
extern int diff_root_tree_sha1(const unsigned char *new, const char *base,
                               struct diff_options *opt);

struct combine_diff_path {
	struct combine_diff_path *next;
	int len;
	char *path;
	unsigned int mode;
	unsigned char sha1[20];
	struct combine_diff_parent {
		char status;
		unsigned int mode;
		unsigned char sha1[20];
	} parent[FLEX_ARRAY];
};
#define combine_diff_path_size(n, l) \
	(sizeof(struct combine_diff_path) + \
	 sizeof(struct combine_diff_parent) * (n) + (l) + 1)

extern void show_combined_diff(struct combine_diff_path *elem, int num_parent,
			      int dense, struct rev_info *);

extern void diff_tree_combined(const unsigned char *sha1, const struct sha1_array *parents, int dense, struct rev_info *rev);

extern void diff_tree_combined_merge(const struct commit *commit, int dense, struct rev_info *rev);

void diff_set_mnemonic_prefix(struct diff_options *options, const char *a, const char *b);

extern int diff_can_quit_early(struct diff_options *);

extern void diff_addremove(struct diff_options *,
			   int addremove,
			   unsigned mode,
			   const unsigned char *sha1,
			   int sha1_valid,
			   const char *fullpath, unsigned dirty_submodule);

extern void diff_change(struct diff_options *,
			unsigned mode1, unsigned mode2,
			const unsigned char *sha1,
			const unsigned char *sha2,
			int sha1_valid,
			int sha2_valid,
			const char *fullpath,
			unsigned dirty_submodule1, unsigned dirty_submodule2);

extern struct diff_filepair *diff_unmerge(struct diff_options *, const char *path);

#define DIFF_SETUP_REVERSE      	1
#define DIFF_SETUP_USE_CACHE		2
#define DIFF_SETUP_USE_SIZE_CACHE	4

/*
 * Poor man's alternative to parse-option, to allow both sticked form
 * (--option=value) and separate form (--option value).
 */
extern int parse_long_opt(const char *opt, const char **argv,
			 const char **optarg);

extern int git_diff_basic_config(const char *var, const char *value, void *cb);
extern int git_diff_ui_config(const char *var, const char *value, void *cb);
extern void diff_setup(struct diff_options *);
extern int diff_opt_parse(struct diff_options *, const char **, int);
extern void diff_setup_done(struct diff_options *);

#define DIFF_DETECT_RENAME	1
#define DIFF_DETECT_COPY	2

#define DIFF_PICKAXE_ALL	1
#define DIFF_PICKAXE_REGEX	2

#define DIFF_PICKAXE_KIND_S	4 /* traditional plumbing counter */
#define DIFF_PICKAXE_KIND_G	8 /* grep in the patch */

extern void diffcore_std(struct diff_options *);
extern void diffcore_fix_diff_index(struct diff_options *);

#define COMMON_DIFF_OPTIONS_HELP \
"\ncommon diff options:\n" \
"  -z            output diff-raw with lines terminated with NUL.\n" \
"  -p            output patch format.\n" \
"  -u            synonym for -p.\n" \
"  --patch-with-raw\n" \
"                output both a patch and the diff-raw format.\n" \
"  --stat        show diffstat instead of patch.\n" \
"  --numstat     show numeric diffstat instead of patch.\n" \
"  --patch-with-stat\n" \
"                output a patch and prepend its diffstat.\n" \
"  --name-only   show only names of changed files.\n" \
"  --name-status show names and status of changed files.\n" \
"  --full-index  show full object name on index lines.\n" \
"  --abbrev=<n>  abbreviate object names in diff-tree header and diff-raw.\n" \
"  -R            swap input file pairs.\n" \
"  -B            detect complete rewrites.\n" \
"  -M            detect renames.\n" \
"  -C            detect copies.\n" \
"  --find-copies-harder\n" \
"                try unchanged files as candidate for copy detection.\n" \
"  -l<n>         limit rename attempts up to <n> paths.\n" \
"  -O<file>      reorder diffs according to the <file>.\n" \
"  -S<string>    find filepair whose only one side contains the string.\n" \
"  --pickaxe-all\n" \
"                show all files diff when -S is used and hit is found.\n" \
"  -a  --text    treat all files as text.\n"

extern int diff_queue_is_empty(void);
extern void diff_flush(struct diff_options*);
extern void diff_warn_rename_limit(const char *varname, int needed, int degraded_cc);

/* diff-raw status letters */
#define DIFF_STATUS_ADDED		'A'
#define DIFF_STATUS_COPIED		'C'
#define DIFF_STATUS_DELETED		'D'
#define DIFF_STATUS_MODIFIED		'M'
#define DIFF_STATUS_RENAMED		'R'
#define DIFF_STATUS_TYPE_CHANGED	'T'
#define DIFF_STATUS_UNKNOWN		'X'
#define DIFF_STATUS_UNMERGED		'U'

/* these are not diff-raw status letters proper, but used by
 * diffcore-filter insn to specify additional restrictions.
 */
#define DIFF_STATUS_FILTER_AON		'*'
#define DIFF_STATUS_FILTER_BROKEN	'B'

extern const char *diff_unique_abbrev(const unsigned char *, int);

/* do not report anything on removed paths */
#define DIFF_SILENT_ON_REMOVED 01
/* report racily-clean paths as modified */
#define DIFF_RACY_IS_MODIFIED 02
extern int run_diff_files(struct rev_info *revs, unsigned int option);
extern int run_diff_index(struct rev_info *revs, int cached);

extern int do_diff_cache(const unsigned char *, struct diff_options *);
extern int diff_flush_patch_id(struct diff_options *, unsigned char *);

extern int diff_result_code(struct diff_options *, int);

extern void diff_no_index(struct rev_info *, int, const char **, int, const char *);

extern int index_differs_from(const char *def, int diff_flags);

extern size_t fill_textconv(struct userdiff_driver *driver,
			    struct diff_filespec *df,
			    char **outbuf);

extern struct userdiff_driver *get_textconv(struct diff_filespec *one);

extern int parse_rename_score(const char **cp_p);

extern long parse_algorithm_value(const char *value);

extern int print_stat_summary(FILE *fp, int files,
			      int insertions, int deletions);
extern void setup_diff_pager(struct diff_options *);

#endif /* DIFF_H */
Commit	Line	Data
be3cfa85 JH	1	/*
	2	* Copyright (C) 2005 Junio C Hamano
	3	*/
86436c28 JH	4	#ifndef DIFF_H
	5	#define DIFF_H
	6
1b0c7174	7	#include "tree-walk.h"
50f9a858	8
91539833	9	struct rev_info;
ac1b3d12	10	struct diff_options;
04245581	11	struct diff_queue_struct;
a3c158d4	12	struct strbuf;
a788d7d5 AB	13	struct diff_filespec;
a788d7d5 AB	14	struct userdiff_driver;
0041f09d	15	struct sha1_array;
82889295	16	struct commit;
ac1b3d12 LT	17
	18	typedef void (change_fn_t)(struct diff_options options,
	19	unsigned old_mode, unsigned new_mode,
	20	const unsigned char *old_sha1,
	21	const unsigned char *new_sha1,
e5450100	22	int old_sha1_valid, int new_sha1_valid,
e3d42c47 JL	23	const char *fullpath,
e3d42c47 JL	24	unsigned old_dirty_submodule, unsigned new_dirty_submodule);
ac1b3d12 LT	25
	26	typedef void (add_remove_fn_t)(struct diff_options options,
	27	int addremove, unsigned mode,
	28	const unsigned char *sha1,
e5450100	29	int sha1_valid,
e3d42c47	30	const char *fullpath, unsigned dirty_submodule);
ac1b3d12	31
04245581 JK	32	typedef void (diff_format_fn_t)(struct diff_queue_struct q,
	33	struct diff_options options, void data);
	34
a3c158d4 BY	35	typedef struct strbuf (diff_prefix_fn_t)(struct diff_options opt, void data);
a3c158d4 BY	36
c6744349 TH	37	#define DIFF_FORMAT_RAW 0x0001
c6744349 TH	38	#define DIFF_FORMAT_DIFFSTAT 0x0002
74e2abe5 JH	39	#define DIFF_FORMAT_NUMSTAT 0x0004
	40	#define DIFF_FORMAT_SUMMARY 0x0008
	41	#define DIFF_FORMAT_PATCH 0x0010
ebd124c6	42	#define DIFF_FORMAT_SHORTSTAT 0x0020
7df7c019	43	#define DIFF_FORMAT_DIRSTAT 0x0040
c6744349 TH	44
c6744349 TH	45	/* These override all above */
74e2abe5 JH	46	#define DIFF_FORMAT_NAME 0x0100
	47	#define DIFF_FORMAT_NAME_STATUS 0x0200
	48	#define DIFF_FORMAT_CHECKDIFF 0x0400
c6744349 TH	49
	50	/* Same as output_format = 0 but we know that -s flag was given
	51	* and we should not give default value to output_format.
	52	*/
74e2abe5	53	#define DIFF_FORMAT_NO_OUTPUT 0x0800
c6744349	54
74e2abe5	55	#define DIFF_FORMAT_CALLBACK 0x1000
04245581	56
8f67f8ae PH	57	#define DIFF_OPT_RECURSIVE (1 << 0)
	58	#define DIFF_OPT_TREE_IN_RECURSIVE (1 << 1)
	59	#define DIFF_OPT_BINARY (1 << 2)
	60	#define DIFF_OPT_TEXT (1 << 3)
	61	#define DIFF_OPT_FULL_INDEX (1 << 4)
	62	#define DIFF_OPT_SILENT_ON_REMOVE (1 << 5)
	63	#define DIFF_OPT_FIND_COPIES_HARDER (1 << 6)
	64	#define DIFF_OPT_FOLLOW_RENAMES (1 << 7)
90d43b07	65	#define DIFF_OPT_RENAME_EMPTY (1 << 8)
882749a0	66	/* (1 << 9) unused */
8f67f8ae	67	#define DIFF_OPT_HAS_CHANGES (1 << 10)
90b19941	68	#define DIFF_OPT_QUICK (1 << 11)
8f67f8ae PH	69	#define DIFF_OPT_NO_INDEX (1 << 12)
	70	#define DIFF_OPT_ALLOW_EXTERNAL (1 << 13)
	71	#define DIFF_OPT_EXIT_WITH_STATUS (1 << 14)
	72	#define DIFF_OPT_REVERSE_DIFF (1 << 15)
62c64895	73	#define DIFF_OPT_CHECK_FAILED (1 << 16)
cd676a51	74	#define DIFF_OPT_RELATIVE_NAME (1 << 17)
50fd9bd8	75	#define DIFF_OPT_IGNORE_SUBMODULES (1 << 18)
f88d225f	76	#define DIFF_OPT_DIRSTAT_CUMULATIVE (1 << 19)
fd33777b	77	#define DIFF_OPT_DIRSTAT_BY_FILE (1 << 20)
c7534ef4	78	#define DIFF_OPT_ALLOW_TEXTCONV (1 << 21)
f245194f	79	#define DIFF_OPT_DIFF_FROM_CONTENTS (1 << 22)
752c0c24	80	#define DIFF_OPT_SUBMODULE_LOG (1 << 23)
9297f77e	81	#define DIFF_OPT_DIRTY_SUBMODULES (1 << 24)
3bfc4504	82	#define DIFF_OPT_IGNORE_UNTRACKED_IN_SUBMODULES (1 << 25)
4af574db	83	#define DIFF_OPT_IGNORE_DIRTY_SUBMODULES (1 << 26)
aee9c7d6	84	#define DIFF_OPT_OVERRIDE_SUBMODULE_CONFIG (1 << 27)
1c57a627	85	#define DIFF_OPT_DIRSTAT_BY_LINE (1 << 28)
14937c2c	86	#define DIFF_OPT_FUNCCONTEXT (1 << 29)
accccde4	87	#define DIFF_OPT_PICKAXE_IGNORE_CASE (1 << 30)
752c0c24	88
8f67f8ae PH	89	#define DIFF_OPT_TST(opts, flag) ((opts)->flags & DIFF_OPT_##flag)
	90	#define DIFF_OPT_SET(opts, flag) ((opts)->flags \|= DIFF_OPT_##flag)
	91	#define DIFF_OPT_CLR(opts, flag) ((opts)->flags &= ~DIFF_OPT_##flag)
628d5c2b KC	92	#define DIFF_XDL_TST(opts, flag) ((opts)->xdl_opts & XDF_##flag)
	93	#define DIFF_XDL_SET(opts, flag) ((opts)->xdl_opts \|= XDF_##flag)
	94	#define DIFF_XDL_CLR(opts, flag) ((opts)->xdl_opts &= ~XDF_##flag)
8f67f8ae	95
307ab20b JH	96	#define DIFF_WITH_ALG(opts, flag) (((opts)->xdl_opts & ~XDF_DIFF_ALGORITHM_MASK) \| XDF_##flag)
307ab20b JH	97
882749a0 TR	98	enum diff_words_type {
	99	DIFF_WORDS_NONE = 0,
	100	DIFF_WORDS_PORCELAIN,
	101	DIFF_WORDS_PLAIN,
	102	DIFF_WORDS_COLOR
	103	};
	104
6b5ee137	105	struct diff_options {
6b5ee137 JH	106	const char *filter;
	107	const char *orderfile;
	108	const char *pickaxe;
2f3f8b21	109	const char *single_follow;
eab9a40b	110	const char a_prefix, b_prefix;
8f67f8ae	111	unsigned flags;
f1c96261	112	int use_color;
ee1e5412	113	int context;
6d0e674a	114	int interhunkcontext;
6b5ee137 JH	115	int break_opt;
6b5ee137 JH	116	int detect_rename;
467ddc14	117	int irreversible_delete;
fb13227e	118	int skip_stat_unmatch;
6b5ee137 JH	119	int line_termination;
	120	int output_format;
	121	int pickaxe_opts;
	122	int rename_score;
8082d8d3	123	int rename_limit;
bf0ab10f	124	int needed_rename_limit;
f31027c9	125	int degraded_cc_to_c;
3ac942d4	126	int show_rename_progress;
712d2c7d	127	int dirstat_permille;
6b5ee137	128	int setup;
47dd0d59	129	int abbrev;
cd676a51 JH	130	const char *prefix;
cd676a51 JH	131	int prefix_length;
698ce6f8	132	const char *stat_sep;
0d21efa5	133	long xdl_opts;
ac1b3d12	134
a2540023 JH	135	int stat_width;
a2540023 JH	136	int stat_name_width;
969fe57b	137	int stat_graph_width;
808e1db2	138	int stat_count;
2b6a5417	139	const char *word_regex;
882749a0	140	enum diff_words_type word_diff;
a2540023	141
34a5e1a2 JS	142	/* this is set by diffcore for DIFF_FORMAT_PATCH */
	143	int found_changes;
	144
44c48a90 JH	145	/* to support internal diff recursion by --follow hack*/
	146	int found_follow;
	147
c0c77734 DB	148	FILE *file;
	149	int close_file;
	150
66f13625	151	struct pathspec pathspec;
ac1b3d12 LT	152	change_fn_t change;
ac1b3d12 LT	153	add_remove_fn_t add_remove;
04245581 JK	154	diff_format_fn_t format_callback;
04245581 JK	155	void *format_callback_data;
a3c158d4	156	diff_prefix_fn_t output_prefix;
5e71a84a	157	int output_prefix_length;
a3c158d4	158	void *output_prefix_data;
6b5ee137 JH	159	};
6b5ee137 JH	160
ce436973 JK	161	enum color_diff {
	162	DIFF_RESET = 0,
	163	DIFF_PLAIN = 1,
	164	DIFF_METAINFO = 2,
	165	DIFF_FRAGINFO = 3,
	166	DIFF_FILE_OLD = 4,
	167	DIFF_FILE_NEW = 5,
	168	DIFF_COMMIT = 6,
448c3ef1	169	DIFF_WHITESPACE = 7,
4b05548f	170	DIFF_FUNCINFO = 8
ce436973 JK	171	};
ce436973 JK	172	const char *diff_get_color(int diff_use_color, enum color_diff ix);
8f67f8ae	173	#define diff_get_color_opt(o, ix) \
f1c96261	174	diff_get_color((o)->use_color, ix)
8f67f8ae	175
ce436973	176
f1922234 JK	177	const char diff_line_prefix(struct diff_options );
	178
	179
698ce6f8 JS	180	extern const char mime_boundary_leader[];
698ce6f8 JS	181
a8baa7b9 JH	182	extern void diff_tree_setup_paths(const char *paths, struct diff_options );
a8baa7b9 JH	183	extern void diff_tree_release_paths(struct diff_options *);
ac1b3d12 LT	184	extern int diff_tree(struct tree_desc t1, struct tree_desc t2,
	185	const char base, struct diff_options opt);
	186	extern int diff_tree_sha1(const unsigned char old, const unsigned char new,
	187	const char base, struct diff_options opt);
2b60356d RS	188	extern int diff_root_tree_sha1(const unsigned char new, const char base,
2b60356d RS	189	struct diff_options *opt);
ac1b3d12	190
ea726d02 JH	191	struct combine_diff_path {
	192	struct combine_diff_path *next;
	193	int len;
	194	char *path;
2454c962	195	unsigned int mode;
ea726d02	196	unsigned char sha1[20];
2454c962	197	struct combine_diff_parent {
d416df88	198	char status;
2454c962 JH	199	unsigned int mode;
	200	unsigned char sha1[20];
	201	} parent[FLEX_ARRAY];
ea726d02	202	};
2454c962 JH	203	#define combine_diff_path_size(n, l) \
	204	(sizeof(struct combine_diff_path) + \
	205	sizeof(struct combine_diff_parent) * (n) + (l) + 1)
ea726d02	206
91539833 LT	207	extern void show_combined_diff(struct combine_diff_path *elem, int num_parent,
91539833 LT	208	int dense, struct rev_info *);
ea726d02	209
0041f09d	210	extern void diff_tree_combined(const unsigned char sha1, const struct sha1_array parents, int dense, struct rev_info *rev);
0fe7c1de	211
82889295	212	extern void diff_tree_combined_merge(const struct commit commit, int dense, struct rev_info rev);
af3feefa	213
a5a818ee JH	214	void diff_set_mnemonic_prefix(struct diff_options options, const char a, const char *b);
a5a818ee JH	215
28b9264d JH	216	extern int diff_can_quit_early(struct diff_options *);
28b9264d JH	217
6b5ee137 JH	218	extern void diff_addremove(struct diff_options *,
6b5ee137 JH	219	int addremove,
77eb2720 JH	220	unsigned mode,
77eb2720 JH	221	const unsigned char *sha1,
e5450100	222	int sha1_valid,
e3d42c47	223	const char *fullpath, unsigned dirty_submodule);
77eb2720	224
6b5ee137 JH	225	extern void diff_change(struct diff_options *,
	226	unsigned mode1, unsigned mode2,
	227	const unsigned char *sha1,
	228	const unsigned char *sha2,
e5450100 JK	229	int sha1_valid,
e5450100 JK	230	int sha2_valid,
e3d42c47 JL	231	const char *fullpath,
e3d42c47 JL	232	unsigned dirty_submodule1, unsigned dirty_submodule2);
77eb2720	233
fa7b2908	234	extern struct diff_filepair diff_unmerge(struct diff_options , const char *path);
77eb2720	235
19feebc8	236	#define DIFF_SETUP_REVERSE 1
f0c6b2a2 JH	237	#define DIFF_SETUP_USE_CACHE 2
f0c6b2a2 JH	238	#define DIFF_SETUP_USE_SIZE_CACHE 4
ce240675	239
dea007fb MM	240	/*
	241	* Poor man's alternative to parse-option, to allow both sticked form
	242	* (--option=value) and separate form (--option value).
	243	*/
	244	extern int parse_long_opt(const char opt, const char *argv,
	245	const char **optarg);
	246
ef90d6d4 JS	247	extern int git_diff_basic_config(const char var, const char value, void *cb);
ef90d6d4 JS	248	extern int git_diff_ui_config(const char var, const char value, void *cb);
6b5ee137 JH	249	extern void diff_setup(struct diff_options *);
6b5ee137 JH	250	extern int diff_opt_parse(struct diff_options , const char *, int);
28452655	251	extern void diff_setup_done(struct diff_options *);
86436c28	252
6b14d7fa JH	253	#define DIFF_DETECT_RENAME 1
	254	#define DIFF_DETECT_COPY 2
	255
367cec1c	256	#define DIFF_PICKAXE_ALL 1
d01d8c67	257	#define DIFF_PICKAXE_REGEX 2
f345b0a0	258
f506b8e8 JH	259	#define DIFF_PICKAXE_KIND_S 4 /* traditional plumbing counter */
	260	#define DIFF_PICKAXE_KIND_G 8 /* grep in the patch */
	261
6b5ee137	262	extern void diffcore_std(struct diff_options *);
730f7284	263	extern void diffcore_fix_diff_index(struct diff_options *);
f2ce9fde	264
dda2d79a JH	265	#define COMMON_DIFF_OPTIONS_HELP \
dda2d79a JH	266	"\ncommon diff options:\n" \
8082d8d3 JH	267	" -z output diff-raw with lines terminated with NUL.\n" \
	268	" -p output patch format.\n" \
	269	" -u synonym for -p.\n" \
5c91da25 PB	270	" --patch-with-raw\n" \
5c91da25 PB	271	" output both a patch and the diff-raw format.\n" \
d75f7952	272	" --stat show diffstat instead of patch.\n" \
74e2abe5	273	" --numstat show numeric diffstat instead of patch.\n" \
29353273 JS	274	" --patch-with-stat\n" \
29353273 JS	275	" output a patch and prepend its diffstat.\n" \
8082d8d3	276	" --name-only show only names of changed files.\n" \
946f5f7c	277	" --name-status show names and status of changed files.\n" \
47dd0d59	278	" --full-index show full object name on index lines.\n" \
913419fc	279	" --abbrev=<n> abbreviate object names in diff-tree header and diff-raw.\n" \
8082d8d3 JH	280	" -R swap input file pairs.\n" \
	281	" -B detect complete rewrites.\n" \
	282	" -M detect renames.\n" \
	283	" -C detect copies.\n" \
dda2d79a	284	" --find-copies-harder\n" \
8082d8d3 JH	285	" try unchanged files as candidate for copy detection.\n" \
	286	" -l<n> limit rename attempts up to <n> paths.\n" \
	287	" -O<file> reorder diffs according to the <file>.\n" \
	288	" -S<string> find filepair whose only one side contains the string.\n" \
dda2d79a	289	" --pickaxe-all\n" \
ca49920f SF	290	" show all files diff when -S is used and hit is found.\n" \
ca49920f SF	291	" -a --text treat all files as text.\n"
dda2d79a	292
38c6f780	293	extern int diff_queue_is_empty(void);
6b5ee137	294	extern void diff_flush(struct diff_options*);
f31027c9	295	extern void diff_warn_rename_limit(const char *varname, int needed, int degraded_cc);
86436c28	296
e7baa4f4	297	/* diff-raw status letters */
ca8c9156	298	#define DIFF_STATUS_ADDED 'A'
e7baa4f4 JH	299	#define DIFF_STATUS_COPIED 'C'
	300	#define DIFF_STATUS_DELETED 'D'
	301	#define DIFF_STATUS_MODIFIED 'M'
	302	#define DIFF_STATUS_RENAMED 'R'
	303	#define DIFF_STATUS_TYPE_CHANGED 'T'
	304	#define DIFF_STATUS_UNKNOWN 'X'
	305	#define DIFF_STATUS_UNMERGED 'U'
	306
	307	/* these are not diff-raw status letters proper, but used by
	308	* diffcore-filter insn to specify additional restrictions.
	309	*/
0b34379a	310	#define DIFF_STATUS_FILTER_AON '*'
e7baa4f4 JH	311	#define DIFF_STATUS_FILTER_BROKEN 'B'
e7baa4f4 JH	312
47dd0d59 JH	313	extern const char diff_unique_abbrev(const unsigned char , int);
47dd0d59 JH	314
4bd5b7da JH	315	/* do not report anything on removed paths */
4bd5b7da JH	316	#define DIFF_SILENT_ON_REMOVED 01
fb63d7f8 JH	317	/* report racily-clean paths as modified */
fb63d7f8 JH	318	#define DIFF_RACY_IS_MODIFIED 02
4bd5b7da	319	extern int run_diff_files(struct rev_info *revs, unsigned int option);
5c21ac0e	320	extern int run_diff_index(struct rev_info *revs, int cached);
e09ad6e1	321
1cfe7733	322	extern int do_diff_cache(const unsigned char , struct diff_options );
fcb3d0ad JS	323	extern int diff_flush_patch_id(struct diff_options , unsigned char );
fcb3d0ad JS	324
da31b358 JH	325	extern int diff_result_code(struct diff_options *, int);
da31b358 JH	326
0569e9b8 JH	327	extern void diff_no_index(struct rev_info , int, const char , int, const char );
0569e9b8 JH	328
75f3ff2e SB	329	extern int index_differs_from(const char *def, int diff_flags);
75f3ff2e SB	330
a788d7d5 AB	331	extern size_t fill_textconv(struct userdiff_driver *driver,
	332	struct diff_filespec *df,
	333	char **outbuf);
	334
	335	extern struct userdiff_driver get_textconv(struct diff_filespec one);
	336
10ae7526 KB	337	extern int parse_rename_score(const char **cp_p);
10ae7526 KB	338
07924d4d MP	339	extern long parse_algorithm_value(const char *value);
07924d4d MP	340
7f814632 NTND	341	extern int print_stat_summary(FILE *fp, int files,
7f814632 NTND	342	int insertions, int deletions);
4914c962	343	extern void setup_diff_pager(struct diff_options *);
7f814632	344
86436c28	345	#endif /* DIFF_H */