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

diff --git a/log-tree.c b/log-tree.c
index 2e2be7c40f996949a69f597168b620976cf55b2f..b46ed3baef7d9d9971a3886d700059217fbe974a 100644 (file)
--- a/log-tree.c
+++ b/log-tree.c
@@ -7,32 +7,113 @@
 #include "reflog-walk.h"
 #include "refs.h"
 #include "string-list.h"
+#include "color.h"
 
 struct decoration name_decoration = { "object names" };
 
-static void add_name_decoration(const char *prefix, const char *name, struct object *obj)
+enum decoration_type {
+       DECORATION_NONE = 0,
+       DECORATION_REF_LOCAL,
+       DECORATION_REF_REMOTE,
+       DECORATION_REF_TAG,
+       DECORATION_REF_STASH,
+       DECORATION_REF_HEAD,
+};
+
+static char decoration_colors[][COLOR_MAXLEN] = {
+       GIT_COLOR_RESET,
+       GIT_COLOR_BOLD_GREEN,   /* REF_LOCAL */
+       GIT_COLOR_BOLD_RED,     /* REF_REMOTE */
+       GIT_COLOR_BOLD_YELLOW,  /* REF_TAG */
+       GIT_COLOR_BOLD_MAGENTA, /* REF_STASH */
+       GIT_COLOR_BOLD_CYAN,    /* REF_HEAD */
+};
+
+static const char *decorate_get_color(int decorate_use_color, enum decoration_type ix)
+{
+       if (decorate_use_color)
+               return decoration_colors[ix];
+       return "";
+}
+
+static int parse_decorate_color_slot(const char *slot)
+{
+       /*
+        * We're comparing with 'ignore-case' on
+        * (because config.c sets them all tolower),
+        * but let's match the letters in the literal
+        * string values here with how they are
+        * documented in Documentation/config.txt, for
+        * consistency.
+        *
+        * We love being consistent, don't we?
+        */
+       if (!strcasecmp(slot, "branch"))
+               return DECORATION_REF_LOCAL;
+       if (!strcasecmp(slot, "remoteBranch"))
+               return DECORATION_REF_REMOTE;
+       if (!strcasecmp(slot, "tag"))
+               return DECORATION_REF_TAG;
+       if (!strcasecmp(slot, "stash"))
+               return DECORATION_REF_STASH;
+       if (!strcasecmp(slot, "HEAD"))
+               return DECORATION_REF_HEAD;
+       return -1;
+}
+
+int parse_decorate_color_config(const char *var, const int ofs, const char *value)
+{
+       int slot = parse_decorate_color_slot(var + ofs);
+       if (slot < 0)
+               return 0;
+       if (!value)
+               return config_error_nonbool(var);
+       color_parse(value, var, decoration_colors[slot]);
+       return 0;
+}
+
+/*
+ * log-tree.c uses DIFF_OPT_TST for determining whether to use color
+ * for showing the commit sha1, use the same check for --decorate
+ */
+#define decorate_get_color_opt(o, ix) \
+       decorate_get_color(DIFF_OPT_TST((o), COLOR_DIFF), ix)
+
+static void add_name_decoration(enum decoration_type type, const char *name, struct object *obj)
 {
-       int plen = strlen(prefix);
        int nlen = strlen(name);
-       struct name_decoration *res = xmalloc(sizeof(struct name_decoration) + plen + nlen);
-       memcpy(res->name, prefix, plen);
-       memcpy(res->name + plen, name, nlen + 1);
+       struct name_decoration *res = xmalloc(sizeof(struct name_decoration) + nlen);
+       memcpy(res->name, name, nlen + 1);
+       res->type = type;
        res->next = add_decoration(&name_decoration, obj, res);
 }
 
 static int add_ref_decoration(const char *refname, const unsigned char *sha1, int flags, void *cb_data)
 {
        struct object *obj = parse_object(sha1);
+       enum decoration_type type = DECORATION_NONE;
        if (!obj)
                return 0;
+
+       if (!prefixcmp(refname, "refs/heads"))
+               type = DECORATION_REF_LOCAL;
+       else if (!prefixcmp(refname, "refs/remotes"))
+               type = DECORATION_REF_REMOTE;
+       else if (!prefixcmp(refname, "refs/tags"))
+               type = DECORATION_REF_TAG;
+       else if (!prefixcmp(refname, "refs/stash"))
+               type = DECORATION_REF_STASH;
+       else if (!prefixcmp(refname, "HEAD"))
+               type = DECORATION_REF_HEAD;
+
        if (!cb_data || *(int *)cb_data == DECORATE_SHORT_REFS)
                refname = prettify_refname(refname);
-       add_name_decoration("", refname, obj);
+       add_name_decoration(type, refname, obj);
        while (obj->type == OBJ_TAG) {
                obj = ((struct tag *)obj)->tagged;
                if (!obj)
                        break;
-               add_name_decoration("tag: ", refname, obj);
+               add_name_decoration(DECORATION_REF_TAG, refname, obj);
        }
        return 0;
 }
@@ -60,6 +141,10 @@ void show_decorations(struct rev_info *opt, struct commit *commit)
 {
        const char *prefix;
        struct name_decoration *decoration;
+       const char *color_commit =
+               diff_get_color_opt(&opt->diffopt, DIFF_COMMIT);
+       const char *color_reset =
+               decorate_get_color_opt(&opt->diffopt, DECORATION_NONE);
 
        if (opt->show_source && commit->util)
                printf("\t%s", (char *) commit->util);
@@ -70,7 +155,14 @@ void show_decorations(struct rev_info *opt, struct commit *commit)
                return;
        prefix = " (";
        while (decoration) {
-               printf("%s%s", prefix, decoration->name);
+               printf("%s", prefix);
+               fputs(decorate_get_color_opt(&opt->diffopt, decoration->type),
+                     stdout);
+               if (decoration->type == DECORATION_REF_TAG)
+                       fputs("tag: ", stdout);
+               printf("%s", decoration->name);
+               fputs(color_reset, stdout);
+               fputs(color_commit, stdout);
                prefix = ", ";
                decoration = decoration->next;
        }