From 309be813c9b75fed70f3a03bf803bf47c6670cfc Mon Sep 17 00:00:00 2001 From: Jonathan Nieder Date: Wed, 1 Dec 2010 17:34:06 -0600 Subject: [PATCH] update-index: migrate to parse-options API --refresh and --really-refresh accept flags (like -q) and modify an error indicator. It might make sense to make the error indicator global, but just pass the flags and a pointer to the error indicator in a struct instead. --cacheinfo wants 3 arguments. Use the OPTION_LOWLEVEL_CALLBACK extension to grab them and PARSE_OPT_NOARG to disallow the "sticked" --cacheinfo=foo form. (The resulting message $ git update-index --cacheinfo=foo error: option `cacheinfo' takes no value is unfortunately incorrect.) --assume-unchanged and --no-assume-unchanged probably should use the OPT_UYN feature; but use a callback for now so the existing MARK_FLAG and UNMARK_FLAG values can be used. --stdin and --index-info are still constrained to be the last argument (implemented using the OPTION_LOWLEVEL_CALLBACK extension). --unresolve and --again consume all arguments that come after them (also using OPTION_LOWLEVEL_CALLBACK). The order of options matters. Each path on the command line is affected only by the options that come before it. A custom argument-parsing loop with parse_options_step() brings that about. In exchange for all the fuss, we get the usual perks: support for un-sticked options, better usage error messages, more useful -h output, and argument parsing code that should be easier to tweak in the future. Signed-off-by: Jonathan Nieder Signed-off-by: Junio C Hamano --- builtin/update-index.c | 392 +++++++++++++++++++++++++---------------- 1 file changed, 243 insertions(+), 149 deletions(-) diff --git a/builtin/update-index.c b/builtin/update-index.c index 62d9f3f0f..571b57964 100644 --- a/builtin/update-index.c +++ b/builtin/update-index.c @@ -10,6 +10,7 @@ #include "builtin.h" #include "refs.h" #include "resolve-undo.h" +#include "parse-options.h" /* * Default to not allowing changes to the list of files. The @@ -397,8 +398,10 @@ static void read_index_info(int line_termination) strbuf_release(&uq); } -static const char update_index_usage[] = -"git update-index [-q] [--add] [--replace] [--remove] [--unmerged] [--refresh] [--really-refresh] [--cacheinfo] [--chmod=(+|-)x] [--assume-unchanged] [--skip-worktree|--no-skip-worktree] [--info-only] [--force-remove] [--stdin] [--index-info] [--unresolve] [--again | -g] [--ignore-missing] [-z] [--verbose] [--] [...]"; +static const char * const update_index_usage[] = { + "git update-index [options] [--] [...]", + NULL +}; static unsigned char head_sha1[20]; static unsigned char merge_head_sha1[20]; @@ -578,16 +581,211 @@ static int do_reupdate(int ac, const char **av, return 0; } +struct refresh_params { + unsigned int flags; + int *has_errors; +}; + +static int refresh(struct refresh_params *o, unsigned int flag) +{ + setup_work_tree(); + *o->has_errors |= refresh_cache(o->flags | flag); + return 0; +} + +static int refresh_callback(const struct option *opt, + const char *arg, int unset) +{ + return refresh(opt->value, 0); +} + +static int really_refresh_callback(const struct option *opt, + const char *arg, int unset) +{ + return refresh(opt->value, REFRESH_REALLY); +} + +static int chmod_callback(const struct option *opt, + const char *arg, int unset) +{ + char *flip = opt->value; + if ((arg[0] != '-' && arg[0] != '+') || arg[1] != 'x' || arg[2]) + return error("option 'chmod' expects \"+x\" or \"-x\""); + *flip = arg[0]; + return 0; +} + +static int resolve_undo_clear_callback(const struct option *opt, + const char *arg, int unset) +{ + resolve_undo_clear(); + return 0; +} + +static int cacheinfo_callback(struct parse_opt_ctx_t *ctx, + const struct option *opt, int unset) +{ + unsigned char sha1[20]; + unsigned int mode; + + if (ctx->argc <= 3) + return error("option 'cacheinfo' expects three arguments"); + if (strtoul_ui(*++ctx->argv, 8, &mode) || + get_sha1_hex(*++ctx->argv, sha1) || + add_cacheinfo(mode, sha1, *++ctx->argv, 0)) + die("git update-index: --cacheinfo cannot add %s", *ctx->argv); + ctx->argc -= 3; + return 0; +} + +static int stdin_cacheinfo_callback(struct parse_opt_ctx_t *ctx, + const struct option *opt, int unset) +{ + int *line_termination = opt->value; + + if (ctx->argc != 1) + return error("option '%s' must be the last argument", opt->long_name); + allow_add = allow_replace = allow_remove = 1; + read_index_info(*line_termination); + return 0; +} + +static int stdin_callback(struct parse_opt_ctx_t *ctx, + const struct option *opt, int unset) +{ + int *read_from_stdin = opt->value; + + if (ctx->argc != 1) + return error("option '%s' must be the last argument", opt->long_name); + *read_from_stdin = 1; + return 0; +} + +static int unresolve_callback(struct parse_opt_ctx_t *ctx, + const struct option *opt, int flags) +{ + int *has_errors = opt->value; + const char *prefix = startup_info->prefix; + + /* consume remaining arguments. */ + *has_errors = do_unresolve(ctx->argc, ctx->argv, + prefix, prefix ? strlen(prefix) : 0); + if (*has_errors) + active_cache_changed = 0; + + ctx->argv += ctx->argc - 1; + ctx->argc = 1; + return 0; +} + +static int reupdate_callback(struct parse_opt_ctx_t *ctx, + const struct option *opt, int flags) +{ + int *has_errors = opt->value; + const char *prefix = startup_info->prefix; + + /* consume remaining arguments. */ + setup_work_tree(); + *has_errors = do_reupdate(ctx->argc, ctx->argv, + prefix, prefix ? strlen(prefix) : 0); + if (*has_errors) + active_cache_changed = 0; + + ctx->argv += ctx->argc - 1; + ctx->argc = 1; + return 0; +} + int cmd_update_index(int argc, const char **argv, const char *prefix) { - int i, newfd, entries, has_errors = 0, line_termination = '\n'; - int allow_options = 1; + int newfd, entries, has_errors = 0, line_termination = '\n'; int read_from_stdin = 0; int prefix_length = prefix ? strlen(prefix) : 0; char set_executable_bit = 0; - unsigned int refresh_flags = 0; + struct refresh_params refresh_args = {0, &has_errors}; int lock_error = 0; struct lock_file *lock_file; + struct parse_opt_ctx_t ctx; + int parseopt_state = PARSE_OPT_UNKNOWN; + struct option options[] = { + OPT_BIT('q', NULL, &refresh_args.flags, + "continue refresh even when index needs update", + REFRESH_QUIET), + OPT_BIT(0, "ignore-submodules", &refresh_args.flags, + "refresh: ignore submodules", + REFRESH_IGNORE_SUBMODULES), + OPT_SET_INT(0, "add", &allow_add, + "do not ignore new files", 1), + OPT_SET_INT(0, "replace", &allow_replace, + "let files replace directories and vice-versa", 1), + OPT_SET_INT(0, "remove", &allow_remove, + "notice files missing from worktree", 1), + OPT_BIT(0, "unmerged", &refresh_args.flags, + "refresh even if index contains unmerged entries", + REFRESH_UNMERGED), + {OPTION_CALLBACK, 0, "refresh", &refresh_args, NULL, + "refresh stat information", + PARSE_OPT_NOARG | PARSE_OPT_NONEG, + refresh_callback}, + {OPTION_CALLBACK, 0, "really-refresh", &refresh_args, NULL, + "like --refresh, but ignore assume-unchanged setting", + PARSE_OPT_NOARG | PARSE_OPT_NONEG, + really_refresh_callback}, + {OPTION_LOWLEVEL_CALLBACK, 0, "cacheinfo", NULL, + " ", + "add the specified entry to the index", + PARSE_OPT_NOARG | /* disallow --cacheinfo= form */ + PARSE_OPT_NONEG | PARSE_OPT_LITERAL_ARGHELP, + (parse_opt_cb *) cacheinfo_callback}, + {OPTION_CALLBACK, 0, "chmod", &set_executable_bit, "(+/-)x", + "override the executable bit of the listed files", + PARSE_OPT_NONEG | PARSE_OPT_LITERAL_ARGHELP, + chmod_callback}, + {OPTION_SET_INT, 0, "assume-unchanged", &mark_valid_only, NULL, + "mark files as \"not changing\"", + PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, MARK_FLAG}, + {OPTION_SET_INT, 0, "no-assume-unchanged", &mark_valid_only, NULL, + "clear assumed-unchanged bit", + PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, UNMARK_FLAG}, + {OPTION_SET_INT, 0, "skip-worktree", &mark_skip_worktree_only, NULL, + "mark files as \"index-only\"", + PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, MARK_FLAG}, + {OPTION_SET_INT, 0, "no-skip-worktree", &mark_skip_worktree_only, NULL, + "clear skip-worktree bit", + PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, UNMARK_FLAG}, + OPT_SET_INT(0, "info-only", &info_only, + "add to index only; do not add content to object database", 1), + OPT_SET_INT(0, "force-remove", &force_remove, + "remove named paths even if present in worktree", 1), + OPT_SET_INT('z', NULL, &line_termination, + "with --stdin: input lines are terminated by null bytes", '\0'), + {OPTION_LOWLEVEL_CALLBACK, 0, "stdin", &read_from_stdin, NULL, + "read list of paths to be updated from standard input", + PARSE_OPT_NONEG | PARSE_OPT_NOARG, + (parse_opt_cb *) stdin_callback}, + {OPTION_LOWLEVEL_CALLBACK, 0, "index-info", &line_termination, NULL, + "add entries from standard input to the index", + PARSE_OPT_NONEG | PARSE_OPT_NOARG, + (parse_opt_cb *) stdin_cacheinfo_callback}, + {OPTION_LOWLEVEL_CALLBACK, 0, "unresolve", &has_errors, NULL, + "repopulate stages #2 and #3 for the listed paths", + PARSE_OPT_NONEG | PARSE_OPT_NOARG, + (parse_opt_cb *) unresolve_callback}, + {OPTION_LOWLEVEL_CALLBACK, 'g', "again", &has_errors, NULL, + "only update entries that differ from HEAD", + PARSE_OPT_NONEG | PARSE_OPT_NOARG, + (parse_opt_cb *) reupdate_callback}, + OPT_BIT(0, "ignore-missing", &refresh_args.flags, + "ignore files missing from worktree", + REFRESH_IGNORE_MISSING), + OPT_SET_INT(0, "verbose", &verbose, + "report actions to standard output", 1), + {OPTION_CALLBACK, 0, "clear-resolve-undo", NULL, NULL, + "(for porcelains) forget saved unresolved conflicts", + PARSE_OPT_NOARG | PARSE_OPT_NONEG, + resolve_undo_clear_callback}, + OPT_END() + }; git_config(git_default_config, NULL); @@ -602,151 +800,48 @@ int cmd_update_index(int argc, const char **argv, const char *prefix) if (entries < 0) die("cache corrupted"); - for (i = 1 ; i < argc; i++) { - const char *path = argv[i]; - const char *p; + /* + * Custom copy of parse_options() because we want to handle + * filename arguments as they come. + */ + parse_options_start(&ctx, argc, argv, prefix, + options, PARSE_OPT_STOP_AT_NON_OPTION); + while (ctx.argc) { + if (parseopt_state != PARSE_OPT_DONE) + parseopt_state = parse_options_step(&ctx, options, + update_index_usage); + if (!ctx.argc) + break; + switch (parseopt_state) { + case PARSE_OPT_HELP: + exit(129); + case PARSE_OPT_NON_OPTION: + case PARSE_OPT_DONE: + { + const char *path = ctx.argv[0]; + const char *p; - if (allow_options && *path == '-') { - if (!strcmp(path, "--")) { - allow_options = 0; - continue; - } - if (!strcmp(path, "-q")) { - refresh_flags |= REFRESH_QUIET; - continue; - } - if (!strcmp(path, "--ignore-submodules")) { - refresh_flags |= REFRESH_IGNORE_SUBMODULES; - continue; - } - if (!strcmp(path, "--add")) { - allow_add = 1; - continue; - } - if (!strcmp(path, "--replace")) { - allow_replace = 1; - continue; - } - if (!strcmp(path, "--remove")) { - allow_remove = 1; - continue; - } - if (!strcmp(path, "--unmerged")) { - refresh_flags |= REFRESH_UNMERGED; - continue; - } - if (!strcmp(path, "--refresh")) { - setup_work_tree(); - has_errors |= refresh_cache(refresh_flags); - continue; - } - if (!strcmp(path, "--really-refresh")) { - setup_work_tree(); - has_errors |= refresh_cache(REFRESH_REALLY | refresh_flags); - continue; - } - if (!strcmp(path, "--cacheinfo")) { - unsigned char sha1[20]; - unsigned int mode; - - if (i+3 >= argc) - die("git update-index: --cacheinfo "); - - if (strtoul_ui(argv[i+1], 8, &mode) || - get_sha1_hex(argv[i+2], sha1) || - add_cacheinfo(mode, sha1, argv[i+3], 0)) - die("git update-index: --cacheinfo" - " cannot add %s", argv[i+3]); - i += 3; - continue; - } - if (!strcmp(path, "--chmod=-x") || - !strcmp(path, "--chmod=+x")) { - if (argc <= i+1) - die("git update-index: %s ", path); - set_executable_bit = path[8]; - continue; - } - if (!strcmp(path, "--assume-unchanged")) { - mark_valid_only = MARK_FLAG; - continue; - } - if (!strcmp(path, "--no-assume-unchanged")) { - mark_valid_only = UNMARK_FLAG; - continue; - } - if (!strcmp(path, "--no-skip-worktree")) { - mark_skip_worktree_only = UNMARK_FLAG; - continue; - } - if (!strcmp(path, "--skip-worktree")) { - mark_skip_worktree_only = MARK_FLAG; - continue; - } - if (!strcmp(path, "--info-only")) { - info_only = 1; - continue; - } - if (!strcmp(path, "--force-remove")) { - force_remove = 1; - continue; - } - if (!strcmp(path, "-z")) { - line_termination = 0; - continue; - } - if (!strcmp(path, "--stdin")) { - if (i != argc - 1) - die("--stdin must be at the end"); - read_from_stdin = 1; - break; - } - if (!strcmp(path, "--index-info")) { - if (i != argc - 1) - die("--index-info must be at the end"); - allow_add = allow_replace = allow_remove = 1; - read_index_info(line_termination); - break; - } - if (!strcmp(path, "--unresolve")) { - has_errors = do_unresolve(argc - i, argv + i, - prefix, prefix_length); - if (has_errors) - active_cache_changed = 0; - goto finish; - } - if (!strcmp(path, "--again") || !strcmp(path, "-g")) { - setup_work_tree(); - has_errors = do_reupdate(argc - i, argv + i, - prefix, prefix_length); - if (has_errors) - active_cache_changed = 0; - goto finish; - } - if (!strcmp(path, "--ignore-missing")) { - refresh_flags |= REFRESH_IGNORE_MISSING; - continue; - } - if (!strcmp(path, "--verbose")) { - verbose = 1; - continue; - } - if (!strcmp(path, "--clear-resolve-undo")) { - resolve_undo_clear(); - continue; - } - if (!strcmp(path, "-h") || !strcmp(path, "--help")) - usage(update_index_usage); - die("unknown option %s", path); + setup_work_tree(); + p = prefix_path(prefix, prefix_length, path); + update_one(p, NULL, 0); + if (set_executable_bit) + chmod_path(set_executable_bit, p); + if (p < path || p > path + strlen(path)) + free((char *)p); + ctx.argc--; + ctx.argv++; + break; + } + case PARSE_OPT_UNKNOWN: + if (ctx.argv[0][1] == '-') + error("unknown option '%s'", ctx.argv[0] + 2); + else + error("unknown switch '%c'", *ctx.opt); + usage_with_options(update_index_usage, options); } - setup_work_tree(); - p = prefix_path(prefix, prefix_length, path); - update_one(p, NULL, 0); - if (set_executable_bit) - chmod_path(set_executable_bit, p); - if (p < path || p > path + strlen(path)) - free((char *)p); } + argc = parse_options_end(&ctx); + if (read_from_stdin) { struct strbuf buf = STRBUF_INIT, nbuf = STRBUF_INIT; @@ -770,10 +865,9 @@ int cmd_update_index(int argc, const char **argv, const char *prefix) strbuf_release(&buf); } - finish: if (active_cache_changed) { if (newfd < 0) { - if (refresh_flags & REFRESH_QUIET) + if (refresh_args.flags & REFRESH_QUIET) exit(128); unable_to_lock_index_die(get_index_file(), lock_error); } -- 2.26.2