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