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git/diff.h

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/*
* Copyright (C) 2005 Junio C Hamano
*/
#ifndef DIFF_H
#define DIFF_H
#include "tree-walk.h"
#include "pathspec.h"
#include "object.h"
struct rev_info;
struct diff_options;
struct diff_queue_struct;
struct strbuf;
struct diff_filespec;
struct userdiff_driver;
struct oid_array;
struct commit;
struct combine_diff_path;
typedef int (*pathchange_fn_t)(struct diff_options *options,
struct combine_diff_path *path);
typedef void (*change_fn_t)(struct diff_options *options,
unsigned old_mode, unsigned new_mode,
const struct object_id *old_oid,
const struct object_id *new_oid,
int old_oid_valid, int new_oid_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 struct object_id *oid,
int oid_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_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_DEFAULT_FOLLOW_RENAMES (1U << 31)
#define DIFF_OPT_TST(opts, flag) ((opts)->flags & DIFF_OPT_##flag)
#define DIFF_OPT_TOUCHED(opts, flag) ((opts)->touched_flags & DIFF_OPT_##flag)
#define DIFF_OPT_SET(opts, flag) (((opts)->flags |= DIFF_OPT_##flag),((opts)->touched_flags |= DIFF_OPT_##flag))
#define DIFF_OPT_CLR(opts, flag) (((opts)->flags &= ~DIFF_OPT_##flag),((opts)->touched_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
};
enum diff_submodule_format {
DIFF_SUBMODULE_SHORT = 0,
DIFF_SUBMODULE_LOG,
DIFF_SUBMODULE_INLINE_DIFF
};
struct diff_options {
const char *orderfile;
const char *pickaxe;
const char *single_follow;
const char *a_prefix, *b_prefix;
const char *line_prefix;
size_t line_prefix_length;
unsigned flags;
unsigned touched_flags;
/* diff-filter bits */
unsigned int filter;
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;
int ita_invisible_in_index;
/* white-space error highlighting */
#define WSEH_NEW 1
#define WSEH_CONTEXT 2
#define WSEH_OLD 4
unsigned ws_error_highlight;
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;
enum diff_submodule_format submodule_format;
/* this is set by diffcore for DIFF_FORMAT_PATCH */
int found_changes;
/* to support internal diff recursion by --follow hack*/
int found_follow;
void (*set_default)(struct diff_options *);
FILE *file;
int close_file;
struct pathspec pathspec;
pathchange_fn_t pathchange;
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;
void *output_prefix_data;
int diff_path_counter;
};
enum color_diff {
DIFF_RESET = 0,
DIFF_CONTEXT = 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 struct combine_diff_path *diff_tree_paths(
struct combine_diff_path *p, const struct object_id *oid,
const struct object_id **parents_oid, int nparent,
struct strbuf *base, struct diff_options *opt);
extern int diff_tree_oid(const struct object_id *old_oid,
const struct object_id *new_oid,
const char *base, struct diff_options *opt);
extern int diff_root_tree_oid(const struct object_id *new_oid, const char *base,
struct diff_options *opt);
struct combine_diff_path {
struct combine_diff_path *next;
char *path;
unsigned int mode;
struct object_id oid;
struct combine_diff_parent {
char status;
unsigned int mode;
struct object_id oid;
} parent[FLEX_ARRAY];
};
#define combine_diff_path_size(n, l) \
st_add4(sizeof(struct combine_diff_path), (l), 1, \
st_mult(sizeof(struct combine_diff_parent), (n)))
extern void show_combined_diff(struct combine_diff_path *elem, int num_parent,
int dense, struct rev_info *);
extern void diff_tree_combined(const struct object_id *oid, const struct oid_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 struct object_id *oid,
int oid_valid,
const char *fullpath, unsigned dirty_submodule);
extern void diff_change(struct diff_options *,
unsigned mode1, unsigned mode2,
const struct object_id *old_oid,
const struct object_id *new_oid,
int old_oid_valid, int new_oid_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 stuck 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_heuristic_config(const char *var, const char *value, void *cb);
extern void init_diff_ui_defaults(void);
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, const char *);
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'
/*
* This is different from find_unique_abbrev() in that
* it stuffs the result with dots for alignment.
*/
extern const char *diff_aligned_abbrev(const struct object_id *sha1, 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 struct object_id *, struct diff_options *);
extern int diff_flush_patch_id(struct diff_options *, struct object_id *, int);
extern int diff_result_code(struct diff_options *, int);
extern void diff_no_index(struct rev_info *, int, const char **);
extern int index_differs_from(const char *def, int diff_flags, int ita_invisible_in_index);
/*
* Fill the contents of the filespec "df", respecting any textconv defined by
* its userdiff driver. The "driver" parameter must come from a
* previous call to get_textconv(), and therefore should either be NULL or have
* textconv enabled.
*
* Note that the memory ownership of the resulting buffer depends on whether
* the driver field is NULL. If it is, then the memory belongs to the filespec
* struct. If it is non-NULL, then "outbuf" points to a newly allocated buffer
* that should be freed by the caller.
*/
extern size_t fill_textconv(struct userdiff_driver *driver,
struct diff_filespec *df,
char **outbuf);
/*
* Look up the userdiff driver for the given filespec, and return it if
* and only if it has textconv enabled (otherwise return NULL). The result
* can be passed to fill_textconv().
*/
extern struct userdiff_driver *get_textconv(struct diff_filespec *one);
/*
* Prepare diff_filespec and convert it using diff textconv API
* if the textconv driver exists.
* Return 1 if the conversion succeeds, 0 otherwise.
*/
extern int textconv_object(const char *path, unsigned mode, const struct object_id *oid, int oid_valid, char **buf, unsigned long *buf_size);
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 */
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