Andrew's git - gitweb.git/blob

   1/*
   2 * Copyright (C) 2005 Junio C Hamano
   3 */
   4#ifndef DIFF_H
   5#define DIFF_H
   6
   7#include "tree-walk.h"
   8
   9struct rev_info;
  10struct diff_options;
  11struct diff_queue_struct;
  12
  13typedef void (*change_fn_t)(struct diff_options *options,
  14                 unsigned old_mode, unsigned new_mode,
  15                 const unsigned char *old_sha1,
  16                 const unsigned char *new_sha1,
  17                 const char *base, const char *path);
  18
  19typedef void (*add_remove_fn_t)(struct diff_options *options,
  20                    int addremove, unsigned mode,
  21                    const unsigned char *sha1,
  22                    const char *base, const char *path);
  23
  24typedef void (*diff_format_fn_t)(struct diff_queue_struct *q,
  25                struct diff_options *options, void *data);
  26
  27#define DIFF_FORMAT_RAW         0x0001
  28#define DIFF_FORMAT_DIFFSTAT    0x0002
  29#define DIFF_FORMAT_NUMSTAT     0x0004
  30#define DIFF_FORMAT_SUMMARY     0x0008
  31#define DIFF_FORMAT_PATCH       0x0010
  32#define DIFF_FORMAT_SHORTSTAT   0x0020
  33
  34/* These override all above */
  35#define DIFF_FORMAT_NAME        0x0100
  36#define DIFF_FORMAT_NAME_STATUS 0x0200
  37#define DIFF_FORMAT_CHECKDIFF   0x0400
  38
  39/* Same as output_format = 0 but we know that -s flag was given
  40 * and we should not give default value to output_format.
  41 */
  42#define DIFF_FORMAT_NO_OUTPUT   0x0800
  43
  44#define DIFF_FORMAT_CALLBACK    0x1000
  45
  46struct diff_options {
  47        const char *filter;
  48        const char *orderfile;
  49        const char *pickaxe;
  50        const char *single_follow;
  51        unsigned recursive:1,
  52                 tree_in_recursive:1,
  53                 binary:1,
  54                 text:1,
  55                 full_index:1,
  56                 silent_on_remove:1,
  57                 find_copies_harder:1,
  58                 color_diff:1,
  59                 color_diff_words:1,
  60                 has_changes:1,
  61                 quiet:1,
  62                 allow_external:1,
  63                 exit_with_status:1;
  64        int context;
  65        int break_opt;
  66        int detect_rename;
  67        int line_termination;
  68        int output_format;
  69        int pickaxe_opts;
  70        int rename_score;
  71        int reverse_diff;
  72        int rename_limit;
  73        int setup;
  74        int abbrev;
  75        const char *msg_sep;
  76        const char *stat_sep;
  77        long xdl_opts;
  78
  79        int stat_width;
  80        int stat_name_width;
  81
  82        /* this is set by diffcore for DIFF_FORMAT_PATCH */
  83        int found_changes;
  84
  85        int nr_paths;
  86        const char **paths;
  87        int *pathlens;
  88        change_fn_t change;
  89        add_remove_fn_t add_remove;
  90        diff_format_fn_t format_callback;
  91        void *format_callback_data;
  92};
  93
  94enum color_diff {
  95        DIFF_RESET = 0,
  96        DIFF_PLAIN = 1,
  97        DIFF_METAINFO = 2,
  98        DIFF_FRAGINFO = 3,
  99        DIFF_FILE_OLD = 4,
 100        DIFF_FILE_NEW = 5,
 101        DIFF_COMMIT = 6,
 102        DIFF_WHITESPACE = 7,
 103};
 104const char *diff_get_color(int diff_use_color, enum color_diff ix);
 105
 106extern const char mime_boundary_leader[];
 107
 108extern void diff_tree_setup_paths(const char **paths, struct diff_options *);
 109extern void diff_tree_release_paths(struct diff_options *);
 110extern int diff_tree(struct tree_desc *t1, struct tree_desc *t2,
 111                     const char *base, struct diff_options *opt);
 112extern int diff_tree_sha1(const unsigned char *old, const unsigned char *new,
 113                          const char *base, struct diff_options *opt);
 114extern int diff_root_tree_sha1(const unsigned char *new, const char *base,
 115                               struct diff_options *opt);
 116
 117struct combine_diff_path {
 118        struct combine_diff_path *next;
 119        int len;
 120        char *path;
 121        unsigned int mode;
 122        unsigned char sha1[20];
 123        struct combine_diff_parent {
 124                char status;
 125                unsigned int mode;
 126                unsigned char sha1[20];
 127        } parent[FLEX_ARRAY];
 128};
 129#define combine_diff_path_size(n, l) \
 130        (sizeof(struct combine_diff_path) + \
 131         sizeof(struct combine_diff_parent) * (n) + (l) + 1)
 132
 133extern void show_combined_diff(struct combine_diff_path *elem, int num_parent,
 134                              int dense, struct rev_info *);
 135
 136extern void diff_tree_combined(const unsigned char *sha1, const unsigned char parent[][20], int num_parent, int dense, struct rev_info *rev);
 137
 138extern void diff_tree_combined_merge(const unsigned char *sha1, int, struct rev_info *);
 139
 140extern void diff_addremove(struct diff_options *,
 141                           int addremove,
 142                           unsigned mode,
 143                           const unsigned char *sha1,
 144                           const char *base,
 145                           const char *path);
 146
 147extern void diff_change(struct diff_options *,
 148                        unsigned mode1, unsigned mode2,
 149                        const unsigned char *sha1,
 150                        const unsigned char *sha2,
 151                        const char *base, const char *path);
 152
 153extern void diff_unmerge(struct diff_options *,
 154                         const char *path,
 155                         unsigned mode,
 156                         const unsigned char *sha1);
 157
 158extern int diff_scoreopt_parse(const char *opt);
 159
 160#define DIFF_SETUP_REVERSE              1
 161#define DIFF_SETUP_USE_CACHE            2
 162#define DIFF_SETUP_USE_SIZE_CACHE       4
 163
 164extern int git_diff_ui_config(const char *var, const char *value);
 165extern void diff_setup(struct diff_options *);
 166extern int diff_opt_parse(struct diff_options *, const char **, int);
 167extern int diff_setup_done(struct diff_options *);
 168
 169#define DIFF_DETECT_RENAME      1
 170#define DIFF_DETECT_COPY        2
 171
 172#define DIFF_PICKAXE_ALL        1
 173#define DIFF_PICKAXE_REGEX      2
 174
 175extern void diffcore_std(struct diff_options *);
 176
 177#define COMMON_DIFF_OPTIONS_HELP \
 178"\ncommon diff options:\n" \
 179"  -z            output diff-raw with lines terminated with NUL.\n" \
 180"  -p            output patch format.\n" \
 181"  -u            synonym for -p.\n" \
 182"  --patch-with-raw\n" \
 183"                output both a patch and the diff-raw format.\n" \
 184"  --stat        show diffstat instead of patch.\n" \
 185"  --numstat     show numeric diffstat instead of patch.\n" \
 186"  --patch-with-stat\n" \
 187"                output a patch and prepend its diffstat.\n" \
 188"  --name-only   show only names of changed files.\n" \
 189"  --name-status show names and status of changed files.\n" \
 190"  --full-index  show full object name on index lines.\n" \
 191"  --abbrev=<n>  abbreviate object names in diff-tree header and diff-raw.\n" \
 192"  -R            swap input file pairs.\n" \
 193"  -B            detect complete rewrites.\n" \
 194"  -M            detect renames.\n" \
 195"  -C            detect copies.\n" \
 196"  --find-copies-harder\n" \
 197"                try unchanged files as candidate for copy detection.\n" \
 198"  -l<n>         limit rename attempts up to <n> paths.\n" \
 199"  -O<file>      reorder diffs according to the <file>.\n" \
 200"  -S<string>    find filepair whose only one side contains the string.\n" \
 201"  --pickaxe-all\n" \
 202"                show all files diff when -S is used and hit is found.\n" \
 203"  -a  --text    treat all files as text.\n"
 204
 205extern int diff_queue_is_empty(void);
 206extern void diff_flush(struct diff_options*);
 207
 208/* diff-raw status letters */
 209#define DIFF_STATUS_ADDED               'A'
 210#define DIFF_STATUS_COPIED              'C'
 211#define DIFF_STATUS_DELETED             'D'
 212#define DIFF_STATUS_MODIFIED            'M'
 213#define DIFF_STATUS_RENAMED             'R'
 214#define DIFF_STATUS_TYPE_CHANGED        'T'
 215#define DIFF_STATUS_UNKNOWN             'X'
 216#define DIFF_STATUS_UNMERGED            'U'
 217
 218/* these are not diff-raw status letters proper, but used by
 219 * diffcore-filter insn to specify additional restrictions.
 220 */
 221#define DIFF_STATUS_FILTER_AON          '*'
 222#define DIFF_STATUS_FILTER_BROKEN       'B'
 223
 224extern const char *diff_unique_abbrev(const unsigned char *, int);
 225
 226extern int run_diff_files(struct rev_info *revs, int silent_on_removed);
 227extern int setup_diff_no_index(struct rev_info *revs,
 228                int argc, const char ** argv, int nongit, const char *prefix);
 229extern int run_diff_files_cmd(struct rev_info *revs, int argc, const char **argv);
 230
 231extern int run_diff_index(struct rev_info *revs, int cached);
 232
 233extern int do_diff_cache(const unsigned char *, struct diff_options *);
 234extern int diff_flush_patch_id(struct diff_options *, unsigned char *);
 235
 236#endif /* DIFF_H */