log: convert to parse-options

Use parse-options in cmd_log_init instead of manually iterating
through them. This makes the code a bit cleaner but more importantly
allows us to catch the "--quiet" option which causes some of the
log-related commands to misbehave as it would otherwise get passed on
to the diff.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/log.c b/builtin/log.c
index 9a15d6961718481339417f973cac0a4a5fc9b26a..ca353402a6984b6fc122c712173f4f061dd5bf20 100644 (file)
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -25,12 +25,15 @@ static const char *default_date_mode = NULL;
 
 static int default_show_root = 1;
 static int decoration_style;
+static int decoration_given;
 static const char *fmt_patch_subject_prefix = "PATCH";
 static const char *fmt_pretty;
 
-static const char * const builtin_log_usage =
+static const char * const builtin_log_usage[] = {
        "git log [<options>] [<since>..<until>] [[--] <path>...]\n"
-       "   or: git show [options] <object>...";
+       "   or: git show [options] <object>...",
+       NULL
+};
 
 static int parse_decoration_style(const char *var, const char *value)
 {
@@ -49,12 +52,41 @@ static int parse_decoration_style(const char *var, const char *value)
        return -1;
 }
 
+static int decorate_callback(const struct option *opt, const char *arg, int unset)
+{
+       if (unset)
+               decoration_style = 0;
+       else if (arg)
+               decoration_style = parse_decoration_style("command line", arg);
+       else
+               decoration_style = DECORATE_SHORT_REFS;
+
+       if (decoration_style < 0)
+               die("invalid --decorate option: %s", arg);
+
+       decoration_given = 1;
+
+       return 0;
+}
+
 static void cmd_log_init(int argc, const char **argv, const char *prefix,
                         struct rev_info *rev, struct setup_revision_opt *opt)
 {
-       int i;
-       int decoration_given = 0;
        struct userformat_want w;
+       int quiet = 0, source = 0;
+
+       const struct option builtin_log_options[] = {
+               OPT_BOOLEAN(0, "quiet", &quiet, "supress diff output"),
+               OPT_BOOLEAN(0, "source", &source, "show source"),
+               { OPTION_CALLBACK, 0, "decorate", NULL, NULL, "decorate options",
+                 PARSE_OPT_OPTARG, decorate_callback},
+               OPT_END()
+       };
+
+       argc = parse_options(argc, argv, prefix,
+                            builtin_log_options, builtin_log_usage,
+                            PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN |
+                            PARSE_OPT_KEEP_DASHDASH);
 
        rev->abbrev = DEFAULT_ABBREV;
        rev->commit_format = CMIT_FMT_DEFAULT;
@@ -69,14 +101,12 @@ static void cmd_log_init(int argc, const char **argv, const char *prefix,
        if (default_date_mode)
                rev->date_mode = parse_date_format(default_date_mode);
 
-       /*
-        * Check for -h before setup_revisions(), or "git log -h" will
-        * fail when run without a git directory.
-        */
-       if (argc == 2 && !strcmp(argv[1], "-h"))
-               usage(builtin_log_usage);
        argc = setup_revisions(argc, argv, rev, opt);
 
+       /* Any arguments at this point are not recognized */
+       if (argc > 1)
+               die("unrecognized argument: %s", argv[1]);
+
        memset(&w, 0, sizeof(w));
        userformat_find_requirements(NULL, &w);
 
@@ -92,26 +122,9 @@ static void cmd_log_init(int argc, const char **argv, const char *prefix,
                if (rev->diffopt.nr_paths != 1)
                        usage("git logs can only follow renames on one pathname at a time");
        }
-       for (i = 1; i < argc; i++) {
-               const char *arg = argv[i];
-               if (!strcmp(arg, "--decorate")) {
-                       decoration_style = DECORATE_SHORT_REFS;
-                       decoration_given = 1;
-               } else if (!prefixcmp(arg, "--decorate=")) {
-                       const char *v = skip_prefix(arg, "--decorate=");
-                       decoration_style = parse_decoration_style(arg, v);
-                       if (decoration_style < 0)
-                               die("invalid --decorate option: %s", arg);
-                       decoration_given = 1;
-               } else if (!strcmp(arg, "--no-decorate")) {
-                       decoration_style = 0;
-               } else if (!strcmp(arg, "--source")) {
-                       rev->show_source = 1;
-               } else if (!strcmp(arg, "-h")) {
-                       usage(builtin_log_usage);
-               } else
-                       die("unrecognized argument: %s", arg);
-       }
+
+       if (source)
+               rev->show_source = 1;
 
        /*
         * defeat log.decorate configuration interacting with --pretty=raw