diff.h

   1 /*
   2  * Copyright (C) 2005 Junio C Hamano
   3  */
   4 #ifndef DIFF_H
   5 #define DIFF_H
   6
   7 #include "tree-walk.h"
   8
   9 struct rev_info;
  10 struct diff_options;
  11
  12 typedef void (*change_fn_t)(struct diff_options *options,
  13                  unsigned old_mode, unsigned new_mode,
  14                  const unsigned char *old_sha1,
  15                  const unsigned char *new_sha1,
  16                  const char *base, const char *path);
  17
  18 typedef void (*add_remove_fn_t)(struct diff_options *options,
  19                     int addremove, unsigned mode,
  20                     const unsigned char *sha1,
  21                     const char *base, const char *path);
  22
  23 #define DIFF_FORMAT_RAW         0x0001
  24 #define DIFF_FORMAT_DIFFSTAT    0x0002
  25 #define DIFF_FORMAT_SUMMARY     0x0004
  26 #define DIFF_FORMAT_PATCH       0x0008
  27
  28 /* These override all above */
  29 #define DIFF_FORMAT_NAME        0x0010
  30 #define DIFF_FORMAT_NAME_STATUS 0x0020
  31 #define DIFF_FORMAT_CHECKDIFF   0x0040
  32
  33 /* Same as output_format = 0 but we know that -s flag was given
  34  * and we should not give default value to output_format.
  35  */
  36 #define DIFF_FORMAT_NO_OUTPUT   0x0080
  37
  38 struct diff_options {
  39         const char *filter;
  40         const char *orderfile;
  41         const char *pickaxe;
  42         unsigned recursive:1,
  43                  tree_in_recursive:1,
  44                  binary:1,
  45                  full_index:1,
  46                  silent_on_remove:1,
  47                  find_copies_harder:1,
  48                  color_diff:1;
  49         int context;
  50         int break_opt;
  51         int detect_rename;
  52         int line_termination;
  53         int output_format;
  54         int pickaxe_opts;
  55         int rename_score;
  56         int reverse_diff;
  57         int rename_limit;
  58         int setup;
  59         int abbrev;
  60         const char *msg_sep;
  61         const char *stat_sep;
  62         long xdl_opts;
  63
  64         int nr_paths;
  65         const char **paths;
  66         int *pathlens;
  67         change_fn_t change;
  68         add_remove_fn_t add_remove;
  69 };
  70
  71 extern const char mime_boundary_leader[];
  72
  73 extern void diff_tree_setup_paths(const char **paths, struct diff_options *);
  74 extern void diff_tree_release_paths(struct diff_options *);
  75 extern int diff_tree(struct tree_desc *t1, struct tree_desc *t2,
  76                      const char *base, struct diff_options *opt);
  77 extern int diff_tree_sha1(const unsigned char *old, const unsigned char *new,
  78                           const char *base, struct diff_options *opt);
  79
  80 struct combine_diff_path {
  81         struct combine_diff_path *next;
  82         int len;
  83         char *path;
  84         unsigned int mode;
  85         unsigned char sha1[20];
  86         struct combine_diff_parent {
  87                 char status;
  88                 unsigned int mode;
  89                 unsigned char sha1[20];
  90         } parent[FLEX_ARRAY];
  91 };
  92 #define combine_diff_path_size(n, l) \
  93         (sizeof(struct combine_diff_path) + \
  94          sizeof(struct combine_diff_parent) * (n) + (l) + 1)
  95
  96 extern void show_combined_diff(struct combine_diff_path *elem, int num_parent,
  97                               int dense, struct rev_info *);
  98
  99 extern void diff_tree_combined(const unsigned char *sha1, const unsigned char parent[][20], int num_parent, int dense, struct rev_info *rev);
 100
 101 extern void diff_tree_combined_merge(const unsigned char *sha1, int, struct rev_info *);
 102
 103 extern void diff_addremove(struct diff_options *,
 104                            int addremove,
 105                            unsigned mode,
 106                            const unsigned char *sha1,
 107                            const char *base,
 108                            const char *path);
 109
 110 extern void diff_change(struct diff_options *,
 111                         unsigned mode1, unsigned mode2,
 112                         const unsigned char *sha1,
 113                         const unsigned char *sha2,
 114                         const char *base, const char *path);
 115
 116 extern void diff_unmerge(struct diff_options *,
 117                          const char *path);
 118
 119 extern int diff_scoreopt_parse(const char *opt);
 120
 121 #define DIFF_SETUP_REVERSE              1
 122 #define DIFF_SETUP_USE_CACHE            2
 123 #define DIFF_SETUP_USE_SIZE_CACHE       4
 124
 125 extern int git_diff_config(const char *var, const char *value);
 126 extern void diff_setup(struct diff_options *);
 127 extern int diff_opt_parse(struct diff_options *, const char **, int);
 128 extern int diff_setup_done(struct diff_options *);
 129
 130 #define DIFF_DETECT_RENAME      1
 131 #define DIFF_DETECT_COPY        2
 132
 133 #define DIFF_PICKAXE_ALL        1
 134 #define DIFF_PICKAXE_REGEX      2
 135
 136 extern void diffcore_std(struct diff_options *);
 137
 138 extern void diffcore_std_no_resolve(struct diff_options *);
 139
 140 #define COMMON_DIFF_OPTIONS_HELP \
 141 "\ncommon diff options:\n" \
 142 "  -z            output diff-raw with lines terminated with NUL.\n" \
 143 "  -p            output patch format.\n" \
 144 "  -u            synonym for -p.\n" \
 145 "  --patch-with-raw\n" \
 146 "                output both a patch and the diff-raw format.\n" \
 147 "  --stat        show diffstat instead of patch.\n" \
 148 "  --patch-with-stat\n" \
 149 "                output a patch and prepend its diffstat.\n" \
 150 "  --name-only   show only names of changed files.\n" \
 151 "  --name-status show names and status of changed files.\n" \
 152 "  --full-index  show full object name on index lines.\n" \
 153 "  --abbrev=<n>  abbreviate object names in diff-tree header and diff-raw.\n" \
 154 "  -R            swap input file pairs.\n" \
 155 "  -B            detect complete rewrites.\n" \
 156 "  -M            detect renames.\n" \
 157 "  -C            detect copies.\n" \
 158 "  --find-copies-harder\n" \
 159 "                try unchanged files as candidate for copy detection.\n" \
 160 "  -l<n>         limit rename attempts up to <n> paths.\n" \
 161 "  -O<file>      reorder diffs according to the <file>.\n" \
 162 "  -S<string>    find filepair whose only one side contains the string.\n" \
 163 "  --pickaxe-all\n" \
 164 "                show all files diff when -S is used and hit is found.\n"
 165
 166 extern int diff_queue_is_empty(void);
 167 extern void diff_flush(struct diff_options*);
 168
 169 /* diff-raw status letters */
 170 #define DIFF_STATUS_ADDED               'A'
 171 #define DIFF_STATUS_COPIED              'C'
 172 #define DIFF_STATUS_DELETED             'D'
 173 #define DIFF_STATUS_MODIFIED            'M'
 174 #define DIFF_STATUS_RENAMED             'R'
 175 #define DIFF_STATUS_TYPE_CHANGED        'T'
 176 #define DIFF_STATUS_UNKNOWN             'X'
 177 #define DIFF_STATUS_UNMERGED            'U'
 178
 179 /* these are not diff-raw status letters proper, but used by
 180  * diffcore-filter insn to specify additional restrictions.
 181  */
 182 #define DIFF_STATUS_FILTER_AON          '*'
 183 #define DIFF_STATUS_FILTER_BROKEN       'B'
 184
 185 extern const char *diff_unique_abbrev(const unsigned char *, int);
 186
 187 extern int run_diff_files(struct rev_info *revs, int silent_on_removed);
 188
 189 extern int run_diff_index(struct rev_info *revs, int cached);
 190
 191 #endif /* DIFF_H */