Why? I did some more size statistics, and 'cmd_blame()' was the biggest
function in all of git. Admittedly my script for finding sizes is probably
broken, but it does look very messy.
Just cleaning up the option parsing actually cuts down the size a bit, and
while parse_options() isn't really perfect for what cmd_blame() wants,
it's manageable.
I think I'll want to add a PARSE_OPT_IGNORE_UNRECOGNIZED flag, and also
make it not write the resulting array into argv[0..] but back into
argv[1..] (so that you can use parse_options() as a _filter_ for options
parsing and make it easier to do partial conversions), but in the meantime
this mostly works.
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
---
That builtin-blame option parsing is really ugly, trying to then move
unrecognized options to be parsed by a secondary
setup_revisions(unk, argv, &revs, NULL);
which parses the rest. This is _really_ not what parse_options() was
written with in mind, and to give strictly the same behaviour as before
you really do need some kind of PARSE_OPT_IGNORE_UNRECOGNIZED flag, but I
think this is already a good enough halfway point.
Hmm?
Btw, making the "struct options" array be 'static' avoids having to build
it up at run-time on the stack, which is why it's usually a good idea. Of
course, it means that the option variables themselves have to be static,
which has its own set of downsides, so it's a balancing act.
builtin-blame.c | 177 +++++++++++++++++++++++++++----------------------------
1 files changed, 86 insertions(+), 91 deletions(-)
diff --git a/builtin-blame.c b/builtin-blame.c
index b451f6c..f04bd93 100644
--- a/builtin-blame.c
+++ b/builtin-blame.c
@@ -18,24 +18,11 @@
#include "cache-tree.h"
#include "path-list.h"
#include "mailmap.h"
+#include "parse-options.h"
-static char blame_usage[] =
-"git-blame [-c] [-b] [-l] [--root] [-t] [-f] [-n] [-s] [-p] [-w] [-L n,m] [-S <revs-file>] [-M] [-C] [-C] [--contents <filename>] [--incremental] [commit] [--] file\n"
-" -c Use the same output mode as git-annotate (Default: off)\n"
-" -b Show blank SHA-1 for boundary commits (Default: off)\n"
-" -l Show long commit SHA1 (Default: off)\n"
-" --root Do not treat root commits as boundaries (Default: off)\n"
-" -t Show raw timestamp (Default: off)\n"
-" -f, --show-name Show original filename (Default: auto)\n"
-" -n, --show-number Show original linenumber (Default: off)\n"
-" -s Suppress author name and timestamp (Default: off)\n"
-" -p, --porcelain Show in a format designed for machine consumption\n"
-" -w Ignore whitespace differences\n"
-" -L n,m Process only line range n,m, counting from 1\n"
-" -M, -C Find line movements within and across files\n"
-" --incremental Show blame entries as we find them, incrementally\n"
-" --contents file Use <file>'s contents as the final image\n"
-" -S revs-file Use revisions from revs-file instead of calling git-rev-list\n";
+static char blame_usage[] = "git-blame [-c] [-b] [-l] [--root] [-t] [-f] [-n] [-s] [-p] [-w] [-L n,m] [-S <revs-file>] [-M] [-C] [-C] [--contents <filename>] [--incremental] [commit] [--] file";
+
+static const char *blame_opt_usage[] = { blame_usage, NULL };
static int longest_file;
static int longest_author;
@@ -2122,6 +2109,50 @@ static struct commit *fake_working_tree_commit(const char *path, const char *con
return commit;
}
+static int blame_copy_callback(const struct option *option, const char *arg, int unset)
+{
+ int *opt = option->value;
+
+ /*
+ * -C enables copy from removed files;
+ * -C -C enables copy from existing files, but only
+ * when blaming a new file;
+ * -C -C -C enables copy from existing files for
+ * everybody
+ */
+ if (*opt & PICKAXE_BLAME_COPY_HARDER)
+ *opt |= PICKAXE_BLAME_COPY_HARDEST;
+ if (*opt & PICKAXE_BLAME_COPY)
+ *opt |= PICKAXE_BLAME_COPY_HARDER;
+ *opt |= PICKAXE_BLAME_COPY | PICKAXE_BLAME_MOVE;
+
+ if (arg)
+ blame_copy_score = parse_score(arg);
+ return 0;
+}
+
+static int blame_move_callback(const struct option *option, const char *arg, int unset)
+{
+ int *opt = option->value;
+
+ *opt |= PICKAXE_BLAME_MOVE;
+
+ if (arg)
+ blame_move_score = parse_score(arg);
+ return 0;
+}
+
+static int blame_bottomtop_callback(const struct option *option, const char *arg, int unset)
+{
+ const char **bottomtop = option->value;
+ if (!arg)
+ return -1;
+ if (*bottomtop)
+ die("More than one '-L n,m' option given");
+ *bottomtop = arg;
+ return 0;
+}
+
int cmd_blame(int argc, const char **argv, const char *prefix)
{
struct rev_info revs;
@@ -2129,94 +2160,58 @@ 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, opt;
+ int i, seen_dashdash, unk;
long bottom, top, lno;
- int output_option = 0;
- int show_stats = 0;
- const char *revs_file = NULL;
const char *final_commit_name = NULL;
enum object_type type;
- const char *bottomtop = NULL;
- const char *contents_from = NULL;
+
+ static const char *bottomtop = NULL;
+ static int output_option = 0, opt = 0;
+ static int show_stats = 0;
+ static const char *revs_file = NULL;
+ static const char *contents_from = NULL;
+ static const struct option options[] = {
+ OPT_BOOLEAN(0, "incremental", &incremental, "Show blame entries as we find them, incrementally"),
+ OPT_BOOLEAN('b', NULL, &blank_boundary, "Show blank SHA-1 for boundary commits (Default: off)"),
+ OPT_BOOLEAN(0, "root", &show_root, "Do not treat root commits as boundaries (Default: off)"),
+ OPT_BOOLEAN(0, "show-stats", &show_stats, "Show work cost statistics"),
+ OPT_BIT(0, "score-debug", &output_option, "Show output score for blame entries", OUTPUT_SHOW_SCORE),
+ OPT_BIT('f', "show-name", &output_option, "Show original filename (Default: auto)", OUTPUT_SHOW_NAME),
+ OPT_BIT('n', "show-number", &output_option, "Show original linenumber (Default: off)", OUTPUT_SHOW_NUMBER),
+ OPT_BIT('p', "porcelain", &output_option, "Show in a format designed for machine consumption", OUTPUT_PORCELAIN),
+ OPT_BIT('c', NULL, &output_option, "Use the same output mode as git-annotate (Default: off)", OUTPUT_ANNOTATE_COMPAT),
+ OPT_BIT('t', NULL, &output_option, "Show raw timestamp (Default: off)", OUTPUT_RAW_TIMESTAMP),
+ OPT_BIT('l', NULL, &output_option, "Show long commit SHA1 (Default: off)", OUTPUT_LONG_OBJECT_NAME),
+ OPT_BIT('s', NULL, &output_option, "Suppress author name and timestamp (Default: off)", OUTPUT_NO_AUTHOR),
+ OPT_BIT('w', NULL, &xdl_opts, "Ignore whitespace differences", XDF_IGNORE_WHITESPACE),
+ OPT_STRING('S', NULL, &revs_file, "file", "Use revisions from <file> instead of calling git-rev-list"),
+ OPT_STRING(0, "contents", &contents_from, "file", "Use <file>'s contents as the final image"),
+ { OPTION_CALLBACK, 'C', NULL, &opt, "score", "Find line copies within and across files", PARSE_OPT_OPTARG, blame_copy_callback },
+ { OPTION_CALLBACK, 'M', NULL, &opt, "score", "Find line movements within and across files", PARSE_OPT_OPTARG, blame_move_callback },
+ OPT_CALLBACK('L', NULL, &bottomtop, "n,m", "Process only line range n,m, counting from 1", blame_bottomtop_callback),
+ OPT_END()
+ };
cmd_is_annotate = !strcmp(argv[0], "annotate");
+ argc = parse_options(argc, argv, options, blame_opt_usage,
+ PARSE_OPT_STOP_AT_NON_OPTION | PARSE_OPT_KEEP_DASHDASH);
+
+ /*
+ * parse_options() offsets things by one - undo for now to make
+ * old code happy.
+ */
+ argc++;
+ argv--;
+
git_config(git_blame_config, NULL);
save_commit_buffer = 0;
- opt = 0;
seen_dashdash = 0;
for (unk = i = 1; i < argc; i++) {
const char *arg = argv[i];
if (*arg != '-')
break;
- else if (!strcmp("-b", arg))
- blank_boundary = 1;
- else if (!strcmp("--root", arg))
- show_root = 1;
- else if (!strcmp(arg, "--show-stats"))
- show_stats = 1;
- else if (!strcmp("-c", arg))
- output_option |= OUTPUT_ANNOTATE_COMPAT;
- else if (!strcmp("-t", arg))
- output_option |= OUTPUT_RAW_TIMESTAMP;
- else if (!strcmp("-l", arg))
- output_option |= OUTPUT_LONG_OBJECT_NAME;
- else if (!strcmp("-s", arg))
- output_option |= OUTPUT_NO_AUTHOR;
- else if (!strcmp("-w", arg))
- xdl_opts |= XDF_IGNORE_WHITESPACE;
- else if (!strcmp("-S", arg) && ++i < argc)
- revs_file = argv[i];
- else if (!prefixcmp(arg, "-M")) {
- opt |= PICKAXE_BLAME_MOVE;
- blame_move_score = parse_score(arg+2);
- }
- else if (!prefixcmp(arg, "-C")) {
- /*
- * -C enables copy from removed files;
- * -C -C enables copy from existing files, but only
- * when blaming a new file;
- * -C -C -C enables copy from existing files for
- * everybody
- */
- if (opt & PICKAXE_BLAME_COPY_HARDER)
- opt |= PICKAXE_BLAME_COPY_HARDEST;
- if (opt & PICKAXE_BLAME_COPY)
- opt |= PICKAXE_BLAME_COPY_HARDER;
- opt |= PICKAXE_BLAME_COPY | PICKAXE_BLAME_MOVE;
- blame_copy_score = parse_score(arg+2);
- }
- else if (!prefixcmp(arg, "-L")) {
- if (!arg[2]) {
- if (++i >= argc)
- usage(blame_usage);
- arg = argv[i];
- }
- else
- arg += 2;
- if (bottomtop)
- die("More than one '-L n,m' option given");
- bottomtop = arg;
- }
- else if (!strcmp("--contents", arg)) {
- if (++i >= argc)
- usage(blame_usage);
- contents_from = argv[i];
- }
- else if (!strcmp("--incremental", arg))
- incremental = 1;
- else if (!strcmp("--score-debug", arg))
- output_option |= OUTPUT_SHOW_SCORE;
- else if (!strcmp("-f", arg) ||
- !strcmp("--show-name", arg))
- output_option |= OUTPUT_SHOW_NAME;
- else if (!strcmp("-n", arg) ||
- !strcmp("--show-number", arg))
- output_option |= OUTPUT_SHOW_NUMBER;
- else if (!strcmp("-p", arg) ||
- !strcmp("--porcelain", arg))
- output_option |= OUTPUT_PORCELAIN;
else if (!strcmp("--", arg)) {
seen_dashdash = 1;
i++;
--
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
