git log/diff: add -G<regexp> that greps in the patch text

diff --git a/diff.h b/diff.h
index 2ef3341fb0852fc8958fa5c5eacab69ee68c0ad9..1fd44f5e47604b94c28a673e6cadc6ec870da9df 100644 (file)
--- a/diff.h
+++ b/diff.h
@@ -9,6 +9,9 @@
 struct rev_info;
 struct diff_options;
 struct diff_queue_struct;
+struct strbuf;
+struct diff_filespec;
+struct userdiff_driver;
 
 typedef void (*change_fn_t)(struct diff_options *options,
                 unsigned old_mode, unsigned new_mode,
@@ -25,6 +28,8 @@ typedef void (*add_remove_fn_t)(struct diff_options *options,
 typedef void (*diff_format_fn_t)(struct diff_queue_struct *q,
                struct diff_options *options, void *data);
 
+typedef struct strbuf *(*diff_prefix_fn_t)(struct diff_options *opt, void *data);
+
 #define DIFF_FORMAT_RAW                0x0001
 #define DIFF_FORMAT_DIFFSTAT   0x0002
 #define DIFF_FORMAT_NUMSTAT    0x0004
@@ -54,7 +59,7 @@ typedef void (*diff_format_fn_t)(struct diff_queue_struct *q,
 #define DIFF_OPT_FIND_COPIES_HARDER  (1 <<  6)
 #define DIFF_OPT_FOLLOW_RENAMES      (1 <<  7)
 #define DIFF_OPT_COLOR_DIFF          (1 <<  8)
-#define DIFF_OPT_COLOR_DIFF_WORDS    (1 <<  9)
+/* (1 <<  9) unused */
 #define DIFF_OPT_HAS_CHANGES         (1 << 10)
 #define DIFF_OPT_QUICK               (1 << 11)
 #define DIFF_OPT_NO_INDEX            (1 << 12)
@@ -69,6 +74,10 @@ typedef void (*diff_format_fn_t)(struct diff_queue_struct *q,
 #define DIFF_OPT_ALLOW_TEXTCONV      (1 << 21)
 #define DIFF_OPT_DIFF_FROM_CONTENTS  (1 << 22)
 #define DIFF_OPT_SUBMODULE_LOG       (1 << 23)
+#define DIFF_OPT_DIRTY_SUBMODULES    (1 << 24)
+#define DIFF_OPT_IGNORE_UNTRACKED_IN_SUBMODULES (1 << 25)
+#define DIFF_OPT_IGNORE_DIRTY_SUBMODULES (1 << 26)
+#define DIFF_OPT_OVERRIDE_SUBMODULE_CONFIG (1 << 27)
 
 #define DIFF_OPT_TST(opts, flag)    ((opts)->flags & DIFF_OPT_##flag)
 #define DIFF_OPT_SET(opts, flag)    ((opts)->flags |= DIFF_OPT_##flag)
@@ -77,6 +86,13 @@ typedef void (*diff_format_fn_t)(struct diff_queue_struct *q,
 #define DIFF_XDL_SET(opts, flag)    ((opts)->xdl_opts |= XDF_##flag)
 #define DIFF_XDL_CLR(opts, flag)    ((opts)->xdl_opts &= ~XDF_##flag)
 
+enum diff_words_type {
+       DIFF_WORDS_NONE = 0,
+       DIFF_WORDS_PORCELAIN,
+       DIFF_WORDS_PLAIN,
+       DIFF_WORDS_COLOR
+};
+
 struct diff_options {
        const char *filter;
        const char *orderfile;
@@ -106,10 +122,14 @@ struct diff_options {
        int stat_width;
        int stat_name_width;
        const char *word_regex;
+       enum diff_words_type word_diff;
 
        /* this is set by diffcore for DIFF_FORMAT_PATCH */
        int found_changes;
 
+       /* to support internal diff recursion by --follow hack*/
+       int found_follow;
+
        FILE *file;
        int close_file;
 
@@ -120,6 +140,8 @@ struct diff_options {
        add_remove_fn_t add_remove;
        diff_format_fn_t format_callback;
        void *format_callback_data;
+       diff_prefix_fn_t output_prefix;
+       void *output_prefix_data;
 };
 
 enum color_diff {
@@ -131,7 +153,7 @@ enum color_diff {
        DIFF_FILE_NEW = 5,
        DIFF_COMMIT = 6,
        DIFF_WHITESPACE = 7,
-       DIFF_FUNCINFO = 8,
+       DIFF_FUNCINFO = 8
 };
 const char *diff_get_color(int diff_use_color, enum color_diff ix);
 #define diff_get_color_opt(o, ix) \
@@ -196,6 +218,13 @@ extern void diff_unmerge(struct diff_options *,
 #define DIFF_SETUP_USE_CACHE           2
 #define DIFF_SETUP_USE_SIZE_CACHE      4
 
+/*
+ * Poor man's alternative to parse-option, to allow both sticked form
+ * (--option=value) and separate form (--option value).
+ */
+extern int parse_long_opt(const char *opt, const char **argv,
+                        const char **optarg);
+
 extern int git_diff_basic_config(const char *var, const char *value, void *cb);
 extern int git_diff_ui_config(const char *var, const char *value, void *cb);
 extern int diff_use_color_default;
@@ -209,6 +238,9 @@ extern int diff_setup_done(struct diff_options *);
 #define DIFF_PICKAXE_ALL       1
 #define DIFF_PICKAXE_REGEX     2
 
+#define DIFF_PICKAXE_KIND_S    4 /* traditional plumbing counter */
+#define DIFF_PICKAXE_KIND_G    8 /* grep in the patch */
+
 extern void diffcore_std(struct diff_options *);
 extern void diffcore_fix_diff_index(struct diff_options *);
 
@@ -277,4 +309,10 @@ extern void diff_no_index(struct rev_info *, int, const char **, int, const char
 
 extern int index_differs_from(const char *def, int diff_flags);
 
+extern size_t fill_textconv(struct userdiff_driver *driver,
+                           struct diff_filespec *df,
+                           char **outbuf);
+
+extern struct userdiff_driver *get_textconv(struct diff_filespec *one);
+
 #endif /* DIFF_H */