Use a *real* built-in diff generator
[gitweb.git] / diff.h
diff --git a/diff.h b/diff.h
index aebf3f1ab52c75e09e3a7da0a663cf12f68d197e..8fac465a9df9b1d8789d17f008968295baa27ad1 100644 (file)
--- a/diff.h
+++ b/diff.h
@@ -8,27 +8,94 @@
        (S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \
        S_ISLNK(mode) ? S_IFLNK : S_IFDIR)
 
-extern void diff_addremove(int addremove,
+struct tree_desc {
+       void *buf;
+       unsigned long size;
+};
+
+extern void update_tree_entry(struct tree_desc *);
+extern const unsigned char *tree_entry_extract(struct tree_desc *, const char **, unsigned int *);
+
+struct diff_options;
+
+typedef void (*change_fn_t)(struct diff_options *options,
+                unsigned old_mode, unsigned new_mode,
+                const unsigned char *old_sha1,
+                const unsigned char *new_sha1,
+                const char *base, const char *path);
+
+typedef void (*add_remove_fn_t)(struct diff_options *options,
+                   int addremove, unsigned mode,
+                   const unsigned char *sha1,
+                   const char *base, const char *path);
+
+struct diff_options {
+       const char **paths;
+       const char *filter;
+       const char *orderfile;
+       const char *pickaxe;
+       unsigned recursive:1,
+                tree_in_recursive:1,
+                full_index:1;
+       int break_opt;
+       int detect_rename;
+       int find_copies_harder;
+       int line_termination;
+       int output_format;
+       int pickaxe_opts;
+       int rename_score;
+       int reverse_diff;
+       int rename_limit;
+       int setup;
+       int abbrev;
+
+       change_fn_t change;
+       add_remove_fn_t add_remove;
+};
+
+extern void diff_tree_setup_paths(const char **paths);
+extern int diff_tree(struct tree_desc *t1, struct tree_desc *t2,
+                    const char *base, struct diff_options *opt);
+extern int diff_tree_sha1(const unsigned char *old, const unsigned char *new,
+                         const char *base, struct diff_options *opt);
+
+struct combine_diff_path {
+       struct combine_diff_path *next;
+       int len;
+       char *path;
+       unsigned int mode;
+       unsigned char sha1[20];
+       struct combine_diff_parent {
+               char status;
+               unsigned int mode;
+               unsigned char sha1[20];
+       } parent[FLEX_ARRAY];
+};
+#define combine_diff_path_size(n, l) \
+       (sizeof(struct combine_diff_path) + \
+        sizeof(struct combine_diff_parent) * (n) + (l) + 1)
+
+extern int show_combined_diff(struct combine_diff_path *elem, int num_parent,
+                             int dense, const char *header,
+                             struct diff_options *);
+
+extern const char *diff_tree_combined_merge(const unsigned char *sha1, const char *, int, struct diff_options *opt);
+
+extern void diff_addremove(struct diff_options *,
+                          int addremove,
                           unsigned mode,
                           const unsigned char *sha1,
                           const char *base,
                           const char *path);
 
-extern void diff_change(unsigned mode1, unsigned mode2,
-                            const unsigned char *sha1,
-                            const unsigned char *sha2,
-                            const char *base, const char *path);
+extern void diff_change(struct diff_options *,
+                       unsigned mode1, unsigned mode2,
+                       const unsigned char *sha1,
+                       const unsigned char *sha2,
+                       const char *base, const char *path);
 
-extern void diff_helper_input(unsigned mode1,
-                             unsigned mode2,
-                             const unsigned char *sha1,
-                             const unsigned char *sha2,
-                             const char *path1,
-                             int status,
-                             int score,
-                             const char *path2);
-
-extern void diff_unmerge(const char *path);
+extern void diff_unmerge(struct diff_options *,
+                        const char *path);
 
 extern int diff_scoreopt_parse(const char *opt);
 
@@ -36,42 +103,40 @@ extern int diff_scoreopt_parse(const char *opt);
 #define DIFF_SETUP_USE_CACHE           2
 #define DIFF_SETUP_USE_SIZE_CACHE      4
 
-extern void diff_setup(int flags);
+extern int git_diff_config(const char *var, const char *value);
+extern void diff_setup(struct diff_options *);
+extern int diff_opt_parse(struct diff_options *, const char **, int);
+extern int diff_setup_done(struct diff_options *);
 
 #define DIFF_DETECT_RENAME     1
 #define DIFF_DETECT_COPY       2
 
 #define DIFF_PICKAXE_ALL       1
 
-extern void diffcore_std(const char **paths,
-                        int detect_rename, int rename_score,
-                        const char *pickaxe, int pickaxe_opts,
-                        int break_opt,
-                        const char *orderfile, const char *filter);
+extern void diffcore_std(struct diff_options *);
 
-extern void diffcore_std_no_resolve(const char **paths,
-                                   const char *pickaxe, int pickaxe_opts,
-                                   const char *orderfile, const char *filter);
+extern void diffcore_std_no_resolve(struct diff_options *);
 
 #define COMMON_DIFF_OPTIONS_HELP \
 "\ncommon diff options:\n" \
-"  -r          diff recursively (only meaningful in diff-tree)\n" \
-"  -z          output diff-raw with lines terminated with NUL.\n" \
-"  -p          output patch format.\n" \
-"  -u          synonym for -p.\n" \
-"  --name-only show only names of changed files.\n" \
-"  --name-only-z\n" \
-"              same as --name-only but terminate lines with NUL.\n" \
-"  -R          swap input file pairs.\n" \
-"  -B          detect complete rewrites.\n" \
-"  -M          detect renames.\n" \
-"  -C          detect copies.\n" \
+"  -z            output diff-raw with lines terminated with NUL.\n" \
+"  -p            output patch format.\n" \
+"  -u            synonym for -p.\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" \
-"  -O<file>    reorder diffs according to the <file>.\n" \
-"  -S<string>  find filepair whose only one side contains the string.\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"
+"                show all files diff when -S is used and hit is found.\n"
 
 extern int diff_queue_is_empty(void);
 
@@ -79,11 +144,12 @@ extern int diff_queue_is_empty(void);
 #define DIFF_FORMAT_PATCH      2
 #define DIFF_FORMAT_NO_OUTPUT  3
 #define DIFF_FORMAT_NAME       4
+#define DIFF_FORMAT_NAME_STATUS        5
 
-extern void diff_flush(int output_style, int line_terminator);
+extern void diff_flush(struct diff_options*);
 
 /* diff-raw status letters */
-#define DIFF_STATUS_ADDED              'N'
+#define DIFF_STATUS_ADDED              'A'
 #define DIFF_STATUS_COPIED             'C'
 #define DIFF_STATUS_DELETED            'D'
 #define DIFF_STATUS_MODIFIED           'M'
@@ -95,7 +161,9 @@ extern void diff_flush(int output_style, int line_terminator);
 /* these are not diff-raw status letters proper, but used by
  * diffcore-filter insn to specify additional restrictions.
  */
-#define DIFF_STATUS_FILTER_AON         'A'
+#define DIFF_STATUS_FILTER_AON         '*'
 #define DIFF_STATUS_FILTER_BROKEN      'B'
 
+extern const char *diff_unique_abbrev(const unsigned char *, int);
+
 #endif /* DIFF_H */