Built-in git-whatchanged.

Split internal "git log" into reusable piece and add "git
whatchanged".  This is based on the option parsing unification
work Linus did.

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/git.c b/git.c
index d172626..9a89b0a 100644 (file)
--- a/git.c
+++ b/git.c
@@ -278,36 +278,33 @@ static int cmd_help(int argc, const char **argv, char **envp)
 
 #define LOGSIZE (65536)
 
-static int cmd_log(int argc, const char **argv, char **envp)
+static int cmd_log_wc(int argc, const char **argv, char **envp,
+                     struct rev_info *rev)
 {
-       struct rev_info rev;
        struct commit *commit;
        char *buf = xmalloc(LOGSIZE);
        const char *commit_prefix = "commit ";
        int shown = 0;
 
-       init_revisions(&rev);
-       rev.abbrev = DEFAULT_ABBREV;
-       argc = setup_revisions(argc, argv, &rev, "HEAD");
        if (argc > 1)
                die("unrecognized argument: %s", argv[1]);
-
-       rev.no_commit_id = 1;
-       if (rev.commit_format == CMIT_FMT_ONELINE)
+       if (rev->commit_format == CMIT_FMT_ONELINE)
                commit_prefix = "";
 
-       prepare_revision_walk(&rev);
+       prepare_revision_walk(rev);
        setup_pager();
-       while ((commit = get_revision(&rev)) != NULL) {
-               if (shown && rev.diff && rev.commit_format != CMIT_FMT_ONELINE)
+       while ((commit = get_revision(rev)) != NULL) {
+               if (shown && rev->diff &&
+                   rev->commit_format != CMIT_FMT_ONELINE)
                        putchar('\n');
                fputs(commit_prefix, stdout);
-               if (rev.abbrev_commit && rev.abbrev)
-                       fputs(find_unique_abbrev(commit->object.sha1, rev.abbrev),
+               if (rev->abbrev_commit && rev->abbrev)
+                       fputs(find_unique_abbrev(commit->object.sha1,
+                                                rev->abbrev),
                              stdout);
                else
                        fputs(sha1_to_hex(commit->object.sha1), stdout);
-               if (rev.parents) {
+               if (rev->parents) {
                        struct commit_list *parents = commit->parents;
                        while (parents) {
                                struct object *o = &(parents->item->object);
@@ -326,15 +323,15 @@ static int cmd_log(int argc, const char **argv, char **envp)
                             parents = parents->next)
                                parents->item->object.flags &= ~TMP_MARK;
                }
-               if (rev.commit_format == CMIT_FMT_ONELINE)
+               if (rev->commit_format == CMIT_FMT_ONELINE)
                        putchar(' ');
                else
                        putchar('\n');
-               pretty_print_commit(rev.commit_format, commit, ~0, buf,
-                                   LOGSIZE, rev.abbrev);
+               pretty_print_commit(rev->commit_format, commit, ~0, buf,
+                                   LOGSIZE, rev->abbrev);
                printf("%s\n", buf);
-               if (rev.diff)
-                       log_tree_commit(&rev, commit);
+               if (rev->diff)
+                       log_tree_commit(rev, commit);
                shown = 1;
                free(commit->buffer);
                commit->buffer = NULL;
@@ -343,6 +340,32 @@ static int cmd_log(int argc, const char **argv, char **envp)
        return 0;
 }
 
+static int cmd_wc(int argc, const char **argv, char **envp)
+{
+       struct rev_info rev;
+
+       init_revisions(&rev);
+       rev.abbrev = DEFAULT_ABBREV;
+       rev.no_commit_id = 1;
+       rev.commit_format = CMIT_FMT_DEFAULT;
+       rev.diff = 1;
+       rev.diffopt.recursive = 1;
+       argc = setup_revisions(argc, argv, &rev, "HEAD");
+       return cmd_log_wc(argc, argv, envp, &rev);
+}
+
+static int cmd_log(int argc, const char **argv, char **envp)
+{
+       struct rev_info rev;
+
+       init_revisions(&rev);
+       rev.abbrev = DEFAULT_ABBREV;
+       rev.no_commit_id = 1;
+       rev.commit_format = CMIT_FMT_DEFAULT;
+       argc = setup_revisions(argc, argv, &rev, "HEAD");
+       return cmd_log_wc(argc, argv, envp, &rev);
+}
+
 static void handle_internal_command(int argc, const char **argv, char **envp)
 {
        const char *cmd = argv[0];
@@ -353,6 +376,7 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
                { "version", cmd_version },
                { "help", cmd_help },
                { "log", cmd_log },
+               { "whatchanged", cmd_wc },
        };
        int i;