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