[PATCH v3 04/16] builtin/multi-pack-index.c: split sub-commands
- From
Taylor Blau <me@ttaylorr.com>
- Date
- Mar 11, 2021, 17:04 UTC
- Message-ID
- <d084f90466813597feb27975654e57de36eb62a4.1615482270.git.me@ttaylorr.com>
- In-Reply-To
- <cover.1615482270.git.me@ttaylorr.com>
Handle sub-commands of the 'git multi-pack-index' builtin (e.g., "write", "repack", etc.) separately from one another. This allows sub-commands with unique options, without forcing cmd_multi_pack_index() to reject invalid combinations itself.
This comes at the cost of some duplication and boilerplate. Luckily, the duplication is reduced to a minimum, since common options are shared among sub-commands due to a suggestion by Ævar. (Sub-commands do have to retain the common options, too, since this builtin accepts common options on either side of the sub-command).
Roughly speaking, cmd_multi_pack_index() parses options (including common ones), and stops at the first non-option, which is the sub-command. It then dispatches to the appropriate sub-command, which parses the remaining options (also including common options).
Unknown options are kept by the sub-commands in order to detect their presence (and complain that too many arguments were given).
Signed-off-by: Taylor Blau <me@ttaylorr.com> --- builtin/multi-pack-index.c | 131 ++++++++++++++++++++++++++++++------- 1 file changed, 106 insertions(+), 25 deletions(-)
diff --git a/builtin/multi-pack-index.c b/builtin/multi-pack-index.c index eea498e026..23e51dfeb4 100644 --- a/builtin/multi-pack-index.c +++ b/builtin/multi-pack-index.c @@ -17,6 +17,22 @@ #define BUILTIN_MIDX_REPACK_USAGE \ N_("git multi-pack-index [<options>] repack [--batch-size=<size>]") +static char const * const builtin_multi_pack_index_write_usage[] = { + BUILTIN_MIDX_WRITE_USAGE, + NULL +}; +static char const * const builtin_multi_pack_index_verify_usage[] = { + BUILTIN_MIDX_VERIFY_USAGE, + NULL +}; +static char const * const builtin_multi_pack_index_expire_usage[] = { + BUILTIN_MIDX_EXPIRE_USAGE, + NULL +}; +static char const * const builtin_multi_pack_index_repack_usage[] = { + BUILTIN_MIDX_REPACK_USAGE, + NULL +}; static char const * const builtin_multi_pack_index_usage[] = { BUILTIN_MIDX_WRITE_USAGE, BUILTIN_MIDX_VERIFY_USAGE, @@ -31,25 +47,99 @@ static struct opts_multi_pack_index { unsigned flags; } opts; -int cmd_multi_pack_index(int argc, const char **argv, - const char *prefix) +static struct option common_opts[] = { + OPT_FILENAME(0, "object-dir", &opts.object_dir, + N_("object directory containing set of packfile and pack-index pairs")), + OPT_BIT(0, "progress", &opts.flags, N_("force progress reporting"), MIDX_PROGRESS), + OPT_END(), +}; + +static struct option *add_common_options(struct option *prev) { - static struct option builtin_multi_pack_index_options[] = { - OPT_FILENAME(0, "object-dir", &opts.object_dir, - N_("object directory containing set of packfile and pack-index pairs")), - OPT_BIT(0, "progress", &opts.flags, N_("force progress reporting"), MIDX_PROGRESS), + struct option *with_common = parse_options_concat(common_opts, prev); + free(prev); + return with_common; +} + +static int cmd_multi_pack_index_write(int argc, const char **argv) +{ + struct option *options = common_opts; + + argc = parse_options(argc, argv, NULL, + options, builtin_multi_pack_index_write_usage, + PARSE_OPT_KEEP_UNKNOWN); + if (argc) + usage_with_options(builtin_multi_pack_index_write_usage, + options); + + return write_midx_file(opts.object_dir, opts.flags); +} + +static int cmd_multi_pack_index_verify(int argc, const char **argv) +{ + struct option *options = common_opts; + + argc = parse_options(argc, argv, NULL, + options, builtin_multi_pack_index_verify_usage, + PARSE_OPT_KEEP_UNKNOWN); + if (argc) + usage_with_options(builtin_multi_pack_index_verify_usage, + options); + + return verify_midx_file(the_repository, opts.object_dir, opts.flags); +} + +static int cmd_multi_pack_index_expire(int argc, const char **argv) +{ + struct option *options = common_opts; + + argc = parse_options(argc, argv, NULL, + options, builtin_multi_pack_index_expire_usage, + PARSE_OPT_KEEP_UNKNOWN); + if (argc) + usage_with_options(builtin_multi_pack_index_expire_usage, + options); + + return expire_midx_packs(the_repository, opts.object_dir, opts.flags); +} + +static int cmd_multi_pack_index_repack(int argc, const char **argv) +{ + struct option *options; + static struct option builtin_multi_pack_index_repack_options[] = { OPT_MAGNITUDE(0, "batch-size", &opts.batch_size, N_("during repack, collect pack-files of smaller size into a batch that is larger than this size")), OPT_END(), }; + options = parse_options_dup(builtin_multi_pack_index_repack_options); + options = add_common_options(options); + + argc = parse_options(argc, argv, NULL, + options, + builtin_multi_pack_index_repack_usage, + PARSE_OPT_KEEP_UNKNOWN); + if (argc) + usage_with_options(builtin_multi_pack_index_repack_usage, + options); + + return midx_repack(the_repository, opts.object_dir, + (size_t)opts.batch_size, opts.flags); +} + +int cmd_multi_pack_index(int argc, const char **argv, + const char *prefix) +{ + struct option *builtin_multi_pack_index_options = common_opts; + git_config(git_default_config, NULL); if (isatty(2)) opts.flags |= MIDX_PROGRESS; argc = parse_options(argc, argv, prefix, builtin_multi_pack_index_options, - builtin_multi_pack_index_usage, 0); + builtin_multi_pack_index_usage, + PARSE_OPT_STOP_AT_NON_OPTION); if (!opts.object_dir) opts.object_dir = get_object_directory(); @@ -58,25 +148,16 @@ int cmd_multi_pack_index(int argc, const char **argv, usage_with_options(builtin_multi_pack_index_usage, builtin_multi_pack_index_options); - if (argc > 1) { - die(_("too many arguments")); - return 1; - } - trace2_cmd_mode(argv[0]); if (!strcmp(argv[0], "repack")) - return midx_repack(the_repository, opts.object_dir, - (size_t)opts.batch_size, opts.flags); - if (opts.batch_size) - die(_("--batch-size option is only for 'repack' subcommand")); - - if (!strcmp(argv[0], "write")) - return write_midx_file(opts.object_dir, opts.flags); - if (!strcmp(argv[0], "verify")) - return verify_midx_file(the_repository, opts.object_dir, opts.flags); - if (!strcmp(argv[0], "expire")) - return expire_midx_packs(the_repository, opts.object_dir, opts.flags); - - die(_("unrecognized subcommand: %s"), argv[0]); + return cmd_multi_pack_index_repack(argc, argv); + else if (!strcmp(argv[0], "write")) + return cmd_multi_pack_index_write(argc, argv); + else if (!strcmp(argv[0], "verify")) + return cmd_multi_pack_index_verify(argc, argv); + else if (!strcmp(argv[0], "expire")) + return cmd_multi_pack_index_expire(argc, argv); + else + die(_("unrecognized subcommand: %s"), argv[0]); }
-- 2.30.0.667.g81c0cbc6fd