log --decorate: Colorize commit decorations

This makes the decorations stand out more and easier to distinguish
and spot because they are colored differently depending on their type.

Signed-off-by: Nazri Ramliy <ayiehere@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/log-tree.c b/log-tree.c
index bec609676e1cee18d25b3158ac3049e886e19860..61680f4664e5be109b9e1471ea18ee1818f2f9c9 100644 (file)
--- a/log-tree.c
+++ b/log-tree.c
@@ -7,6 +7,7 @@
 #include "reflog-walk.h"
 #include "refs.h"
 #include "string-list.h"
+#include "color.h"
 
 struct decoration name_decoration = { "object names" };
 
@@ -19,6 +20,29 @@ enum decoration_type {
        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 "";
+}
+
+/*
+ * 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 nlen = strlen(name);
@@ -81,6 +105,10 @@ 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);
@@ -92,9 +120,13 @@ void show_decorations(struct rev_info *opt, struct commit *commit)
        prefix = " (";
        while (decoration) {
                printf("%s", prefix);
+               fputs(decorate_get_color_opt(&opt->diffopt, decoration->type),
+                     stdout);
                if (decoration->type == DECORATION_REF_TAG)
-                       printf("tag: ");
+                       fputs("tag: ", stdout);
                printf("%s", decoration->name);
+               fputs(color_reset, stdout);
+               fputs(color_commit, stdout);
                prefix = ", ";
                decoration = decoration->next;
        }