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git-blame: migrate to incremental parse-option [2/2]

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Now use handle_revision_args instead of parse_revisions, and simplify the
handling of old-style arguments a lot thanks to the filtering.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Pierre Habouzit 2008-07-08 15:19:35 +02:00 committed by Junio C Hamano
parent 5817da0143
commit 3f8d520489
1 changed files with 38 additions and 92 deletions
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130
builtin-blame.c
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@ -2262,8 +2262,7 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
struct scoreboard sb;
struct origin *o;
struct blame_entry *ent;
int i, seen_dashdash, unk;
long bottom, top, lno;
long dashdash_pos, bottom, top, lno;
const char *final_commit_name = NULL;
enum object_type type;
@ -2301,6 +2300,7 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
git_config(git_blame_config, NULL);
init_revisions(&revs, NULL);
save_commit_buffer = 0;
dashdash_pos = 0;
parse_options_start(&ctx, argc, argv, PARSE_OPT_KEEP_DASHDASH |
PARSE_OPT_KEEP_ARGV0);
@ -2311,6 +2311,8 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
case PARSE_OPT_HELP:
exit(129);
case PARSE_OPT_DONE:
if (ctx.argv[0])
dashdash_pos = ctx.cpidx;
goto parse_done;
}
@ -2330,20 +2332,6 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
parse_done:
argc = parse_options_end(&ctx);
seen_dashdash = 0;
for (unk = i = 1; i < argc; i++) {
const char *arg = argv[i];
if (*arg != '-')
break;
else if (!strcmp("--", arg)) {
seen_dashdash = 1;
i++;
break;
}
else
argv[unk++] = arg;
}
if (!blame_move_score)
blame_move_score = BLAME_DEFAULT_MOVE_SCORE;
if (!blame_copy_score)
@ -2356,92 +2344,50 @@ parse_done:
*
* The remaining are:
*
* (1) if seen_dashdash, its either
* "-options -- <path>" or
* "-options -- <path> <rev>".
* but the latter is allowed only if there is no
* options that we passed to revision machinery.
* (1) if dashdash_pos != 0, its either
* "blame [revisions] -- <path>" or
* "blame -- <path> <rev>"
*
* (2) otherwise, we may have "--" somewhere later and
* might be looking at the first one of multiple 'rev'
* parameters (e.g. " master ^next ^maint -- path").
* See if there is a dashdash first, and give the
* arguments before that to revision machinery.
* After that there must be one 'path'.
* (2) otherwise, its one of the two:
* "blame [revisions] <path>"
* "blame <path> <rev>"
*
* (3) otherwise, its one of the three:
* "-options <path> <rev>"
* "-options <rev> <path>"
* "-options <path>"
* but again the first one is allowed only if
* there is no options that we passed to revision
* machinery.
* Note that we must strip out <path> from the arguments: we do not
* want the path pruning but we may want "bottom" processing.
*/
if (seen_dashdash) {
/* (1) */
if (argc <= i)
if (dashdash_pos) {
switch (argc - dashdash_pos - 1) {
case 2: /* (1b) */
if (argc != 4)
usage_with_options(blame_opt_usage, options);
/* reorder for the new way: <rev> -- <path> */
argv[1] = argv[3];
argv[3] = argv[2];
argv[2] = "--";
/* FALLTHROUGH */
case 1: /* (1a) */
path = add_prefix(prefix, argv[--argc]);
argv[argc] = NULL;
break;
default:
usage_with_options(blame_opt_usage, options);
path = add_prefix(prefix, argv[i]);
if (i + 1 == argc - 1) {
if (unk != 1)
usage_with_options(blame_opt_usage, options);
argv[unk++] = argv[i + 1];
}
else if (i + 1 != argc)
/* garbage at end */
} else {
if (argc < 2)
usage_with_options(blame_opt_usage, options);
}
else {
int j;
for (j = i; !seen_dashdash && j < argc; j++)
if (!strcmp(argv[j], "--"))
seen_dashdash = j;
if (seen_dashdash) {
/* (2) */
if (seen_dashdash + 1 != argc - 1)
usage_with_options(blame_opt_usage, options);
path = add_prefix(prefix, argv[seen_dashdash + 1]);
for (j = i; j < seen_dashdash; j++)
argv[unk++] = argv[j];
path = add_prefix(prefix, argv[argc - 1]);
if (argc == 3 && !has_path_in_work_tree(path)) { /* (2b) */
path = add_prefix(prefix, argv[1]);
argv[1] = argv[2];
}
else {
/* (3) */
if (argc <= i)
usage_with_options(blame_opt_usage, options);
path = add_prefix(prefix, argv[i]);
if (i + 1 == argc - 1) {
final_commit_name = argv[i + 1];
argv[argc - 1] = "--";
/* if (unk == 1) we could be getting
* old-style
*/
if (unk == 1 && !has_path_in_work_tree(path)) {
path = add_prefix(prefix, argv[i + 1]);
final_commit_name = argv[i];
}
}
else if (i != argc - 1)
usage_with_options(blame_opt_usage, options);
setup_work_tree();
if (!has_path_in_work_tree(path))
die("cannot stat path %s: %s",
path, strerror(errno));
}
setup_work_tree();
if (!has_path_in_work_tree(path))
die("cannot stat path %s: %s", path, strerror(errno));
}
if (final_commit_name)
argv[unk++] = final_commit_name;
/*
* Now we got rev and path. We do not want the path pruning
* but we may want "bottom" processing.
*/
argv[unk++] = "--"; /* terminate the rev name */
argv[unk] = NULL;
setup_revisions(unk, argv, &revs, NULL);
setup_revisions(argc, argv, &revs, NULL);
memset(&sb, 0, sizeof(sb));
sb.revs = &revs;