summaryrefslogtreecommitdiff
path: root/parse-options.c
diff options
context:
space:
mode:
Diffstat (limited to 'parse-options.c')
-rw-r--r--parse-options.c384
1 files changed, 203 insertions, 181 deletions
diff --git a/parse-options.c b/parse-options.c
index f559411..80106c0 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -2,17 +2,25 @@
#include "parse-options.h"
#include "cache.h"
#include "commit.h"
+#include "color.h"
+#include "utf8.h"
+
+static int parse_options_usage(struct parse_opt_ctx_t *ctx,
+ const char * const *usagestr,
+ const struct option *opts, int err);
#define OPT_SHORT 1
#define OPT_UNSET 2
-static int opterror(const struct option *opt, const char *reason, int flags)
+int optbug(const struct option *opt, const char *reason)
{
- if (flags & OPT_SHORT)
- return error("switch `%c' %s", opt->short_name, reason);
- if (flags & OPT_UNSET)
- return error("option `no-%s' %s", opt->long_name, reason);
- return error("option `%s' %s", opt->long_name, reason);
+ if (opt->long_name) {
+ if (opt->short_name)
+ return error("BUG: switch '%c' (--%s) %s",
+ opt->short_name, opt->long_name, reason);
+ return error("BUG: option '%s' %s", opt->long_name, reason);
+ }
+ return error("BUG: switch '%c' %s", opt->short_name, reason);
}
static int get_arg(struct parse_opt_ctx_t *p, const struct option *opt,
@@ -39,8 +47,42 @@ static void fix_filename(const char *prefix, const char **file)
*file = xstrdup(prefix_filename(prefix, strlen(prefix), *file));
}
+static int opt_command_mode_error(const struct option *opt,
+ const struct option *all_opts,
+ int flags)
+{
+ const struct option *that;
+ struct strbuf message = STRBUF_INIT;
+ struct strbuf that_name = STRBUF_INIT;
+
+ /*
+ * Find the other option that was used to set the variable
+ * already, and report that this is not compatible with it.
+ */
+ for (that = all_opts; that->type != OPTION_END; that++) {
+ if (that == opt ||
+ that->type != OPTION_CMDMODE ||
+ that->value != opt->value ||
+ that->defval != *(int *)opt->value)
+ continue;
+
+ if (that->long_name)
+ strbuf_addf(&that_name, "--%s", that->long_name);
+ else
+ strbuf_addf(&that_name, "-%c", that->short_name);
+ strbuf_addf(&message, ": incompatible with %s", that_name.buf);
+ strbuf_release(&that_name);
+ opterror(opt, message.buf, flags);
+ strbuf_release(&message);
+ return -1;
+ }
+ return opterror(opt, ": incompatible with something else", flags);
+}
+
static int get_value(struct parse_opt_ctx_t *p,
- const struct option *opt, int flags)
+ const struct option *opt,
+ const struct option *all_opts,
+ int flags)
{
const char *s, *arg;
const int unset = flags & OPT_UNSET;
@@ -50,25 +92,13 @@ static int get_value(struct parse_opt_ctx_t *p,
return opterror(opt, "takes no value", flags);
if (unset && (opt->flags & PARSE_OPT_NONEG))
return opterror(opt, "isn't available", flags);
-
- if (!(flags & OPT_SHORT) && p->opt) {
- switch (opt->type) {
- case OPTION_CALLBACK:
- if (!(opt->flags & PARSE_OPT_NOARG))
- break;
- /* FALLTHROUGH */
- case OPTION_BOOLEAN:
- case OPTION_BIT:
- case OPTION_NEGBIT:
- case OPTION_SET_INT:
- case OPTION_SET_PTR:
- return opterror(opt, "takes no value", flags);
- default:
- break;
- }
- }
+ if (!(flags & OPT_SHORT) && p->opt && (opt->flags & PARSE_OPT_NOARG))
+ return opterror(opt, "takes no value", flags);
switch (opt->type) {
+ case OPTION_LOWLEVEL_CALLBACK:
+ return (*(parse_opt_ll_cb *)opt->callback)(p, opt, unset);
+
case OPTION_BIT:
if (unset)
*(int *)opt->value &= ~opt->defval;
@@ -83,7 +113,7 @@ static int get_value(struct parse_opt_ctx_t *p,
*(int *)opt->value &= ~opt->defval;
return 0;
- case OPTION_BOOLEAN:
+ case OPTION_COUNTUP:
*(int *)opt->value = unset ? 0 : *(int *)opt->value + 1;
return 0;
@@ -91,8 +121,14 @@ static int get_value(struct parse_opt_ctx_t *p,
*(int *)opt->value = unset ? 0 : opt->defval;
return 0;
- case OPTION_SET_PTR:
- *(void **)opt->value = unset ? NULL : (void *)opt->defval;
+ case OPTION_CMDMODE:
+ /*
+ * Giving the same mode option twice, although is unnecessary,
+ * is not a grave error, so let it pass.
+ */
+ if (*(int *)opt->value && *(int *)opt->value != opt->defval)
+ return opt_command_mode_error(opt, all_opts, flags);
+ *(int *)opt->value = opt->defval;
return 0;
case OPTION_STRING:
@@ -151,12 +187,13 @@ static int get_value(struct parse_opt_ctx_t *p,
static int parse_short_opt(struct parse_opt_ctx_t *p, const struct option *options)
{
+ const struct option *all_opts = options;
const struct option *numopt = NULL;
for (; options->type != OPTION_END; options++) {
if (options->short_name == *p->opt) {
p->opt = p->opt[1] ? p->opt + 1 : NULL;
- return get_value(p, options, OPT_SHORT);
+ return get_value(p, options, all_opts, OPT_SHORT);
}
/*
@@ -185,21 +222,21 @@ static int parse_short_opt(struct parse_opt_ctx_t *p, const struct option *optio
static int parse_long_opt(struct parse_opt_ctx_t *p, const char *arg,
const struct option *options)
{
- const char *arg_end = strchr(arg, '=');
+ const struct option *all_opts = options;
+ const char *arg_end = strchrnul(arg, '=');
const struct option *abbrev_option = NULL, *ambiguous_option = NULL;
int abbrev_flags = 0, ambiguous_flags = 0;
- if (!arg_end)
- arg_end = arg + strlen(arg);
-
for (; options->type != OPTION_END; options++) {
- const char *rest;
- int flags = 0;
+ const char *rest, *long_name = options->long_name;
+ int flags = 0, opt_flags = 0;
- if (!options->long_name)
+ if (!long_name)
continue;
- rest = skip_prefix(arg, options->long_name);
+again:
+ if (!skip_prefix(arg, long_name, &rest))
+ rest = NULL;
if (options->type == OPTION_ARGUMENT) {
if (!rest)
continue;
@@ -212,7 +249,7 @@ static int parse_long_opt(struct parse_opt_ctx_t *p, const char *arg,
}
if (!rest) {
/* abbreviated? */
- if (!strncmp(options->long_name, arg, arg_end - arg)) {
+ if (!strncmp(long_name, arg, arg_end - arg)) {
is_abbreviated:
if (abbrev_option) {
/*
@@ -227,34 +264,41 @@ is_abbreviated:
if (!(flags & OPT_UNSET) && *arg_end)
p->opt = arg_end + 1;
abbrev_option = options;
- abbrev_flags = flags;
+ abbrev_flags = flags ^ opt_flags;
continue;
}
/* negation allowed? */
if (options->flags & PARSE_OPT_NONEG)
continue;
/* negated and abbreviated very much? */
- if (!prefixcmp("no-", arg)) {
+ if (starts_with("no-", arg)) {
flags |= OPT_UNSET;
goto is_abbreviated;
}
/* negated? */
- if (strncmp(arg, "no-", 3))
+ if (!starts_with(arg, "no-")) {
+ if (starts_with(long_name, "no-")) {
+ long_name += 3;
+ opt_flags |= OPT_UNSET;
+ goto again;
+ }
continue;
+ }
flags |= OPT_UNSET;
- rest = skip_prefix(arg + 3, options->long_name);
- /* abbreviated and negated? */
- if (!rest && !prefixcmp(options->long_name, arg + 3))
- goto is_abbreviated;
- if (!rest)
- continue;
+ if (!skip_prefix(arg + 3, long_name, &rest)) {
+ /* abbreviated and negated? */
+ if (starts_with(long_name, arg + 3))
+ goto is_abbreviated;
+ else
+ continue;
+ }
}
if (*rest) {
if (*rest != '=')
continue;
p->opt = rest + 1;
}
- return get_value(p, options, flags);
+ return get_value(p, options, all_opts, flags ^ opt_flags);
}
if (ambiguous_option)
@@ -266,25 +310,20 @@ is_abbreviated:
(abbrev_flags & OPT_UNSET) ? "no-" : "",
abbrev_option->long_name);
if (abbrev_option)
- return get_value(p, abbrev_option, abbrev_flags);
+ return get_value(p, abbrev_option, all_opts, abbrev_flags);
return -2;
}
static int parse_nodash_opt(struct parse_opt_ctx_t *p, const char *arg,
const struct option *options)
{
+ const struct option *all_opts = options;
+
for (; options->type != OPTION_END; options++) {
if (!(options->flags & PARSE_OPT_NODASH))
continue;
- if ((options->flags & PARSE_OPT_OPTARG) ||
- !(options->flags & PARSE_OPT_NOARG))
- die("BUG: dashless options don't support arguments");
- if (!(options->flags & PARSE_OPT_NONEG))
- die("BUG: dashless options don't support negation");
- if (options->long_name)
- die("BUG: dashless options can't be long");
if (options->short_name == arg[0] && arg[1] == '\0')
- return get_value(p, options, OPT_SHORT);
+ return get_value(p, options, all_opts, OPT_SHORT);
}
return -2;
}
@@ -294,7 +333,7 @@ static void check_typos(const char *arg, const struct option *options)
if (strlen(arg) < 3)
return;
- if (!prefixcmp(arg, "no-")) {
+ if (starts_with(arg, "no-")) {
error ("did you mean `--%s` (with two dashes ?)", arg);
exit(129);
}
@@ -302,7 +341,7 @@ static void check_typos(const char *arg, const struct option *options)
for (; options->type != OPTION_END; options++) {
if (!options->long_name)
continue;
- if (!prefixcmp(options->long_name, arg)) {
+ if (starts_with(options->long_name, arg)) {
error ("did you mean `--%s` (with two dashes ?)", arg);
exit(129);
}
@@ -312,28 +351,50 @@ static void check_typos(const char *arg, const struct option *options)
static void parse_options_check(const struct option *opts)
{
int err = 0;
+ char short_opts[128];
+ memset(short_opts, '\0', sizeof(short_opts));
for (; opts->type != OPTION_END; opts++) {
if ((opts->flags & PARSE_OPT_LASTARG_DEFAULT) &&
- (opts->flags & PARSE_OPT_OPTARG)) {
- if (opts->long_name) {
- error("`--%s` uses incompatible flags "
- "LASTARG_DEFAULT and OPTARG", opts->long_name);
- } else {
- error("`-%c` uses incompatible flags "
- "LASTARG_DEFAULT and OPTARG", opts->short_name);
- }
- err |= 1;
+ (opts->flags & PARSE_OPT_OPTARG))
+ err |= optbug(opts, "uses incompatible flags "
+ "LASTARG_DEFAULT and OPTARG");
+ if (opts->short_name) {
+ if (0x7F <= opts->short_name)
+ err |= optbug(opts, "invalid short name");
+ else if (short_opts[opts->short_name]++)
+ err |= optbug(opts, "short name already used");
}
+ if (opts->flags & PARSE_OPT_NODASH &&
+ ((opts->flags & PARSE_OPT_OPTARG) ||
+ !(opts->flags & PARSE_OPT_NOARG) ||
+ !(opts->flags & PARSE_OPT_NONEG) ||
+ opts->long_name))
+ err |= optbug(opts, "uses feature "
+ "not supported for dashless options");
+ switch (opts->type) {
+ case OPTION_COUNTUP:
+ case OPTION_BIT:
+ case OPTION_NEGBIT:
+ case OPTION_SET_INT:
+ case OPTION_NUMBER:
+ if ((opts->flags & PARSE_OPT_OPTARG) ||
+ !(opts->flags & PARSE_OPT_NOARG))
+ err |= optbug(opts, "should not accept an argument");
+ default:
+ ; /* ok. (usually accepts an argument) */
+ }
+ if (opts->argh &&
+ strcspn(opts->argh, " _") != strlen(opts->argh))
+ err |= optbug(opts, "multi-word argh should use dash to separate words");
}
-
if (err)
- exit(129);
+ exit(128);
}
void parse_options_start(struct parse_opt_ctx_t *ctx,
int argc, const char **argv, const char *prefix,
- int flags)
+ const struct option *options, int flags)
{
memset(ctx, 0, sizeof(*ctx));
ctx->argc = argc - 1;
@@ -345,10 +406,12 @@ void parse_options_start(struct parse_opt_ctx_t *ctx,
if ((flags & PARSE_OPT_KEEP_UNKNOWN) &&
(flags & PARSE_OPT_STOP_AT_NON_OPTION))
die("STOP_AT_NON_OPTION and KEEP_UNKNOWN don't go together");
+ parse_options_check(options);
}
-static int usage_with_options_internal(const char * const *,
- const struct option *, int);
+static int usage_with_options_internal(struct parse_opt_ctx_t *,
+ const char * const *,
+ const struct option *, int, int);
int parse_options_step(struct parse_opt_ctx_t *ctx,
const struct option *options,
@@ -356,8 +419,6 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
{
int internal_help = !(ctx->flags & PARSE_OPT_NO_INTERNAL_HELP);
- parse_options_check(options);
-
/* we must reset ->opt, unknown short option leave it dangling */
ctx->opt = NULL;
@@ -368,7 +429,7 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
if (parse_nodash_opt(ctx, arg, options) == 0)
continue;
if (ctx->flags & PARSE_OPT_STOP_AT_NON_OPTION)
- break;
+ return PARSE_OPT_NON_OPTION;
ctx->out[ctx->cpidx++] = ctx->argv[0];
continue;
}
@@ -376,21 +437,23 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
if (arg[1] != '-') {
ctx->opt = arg + 1;
if (internal_help && *ctx->opt == 'h')
- return parse_options_usage(usagestr, options);
+ return parse_options_usage(ctx, usagestr, options, 0);
switch (parse_short_opt(ctx, options)) {
case -1:
- return parse_options_usage(usagestr, options);
+ return parse_options_usage(ctx, usagestr, options, 1);
case -2:
+ if (ctx->opt)
+ check_typos(arg + 1, options);
goto unknown;
}
if (ctx->opt)
check_typos(arg + 1, options);
while (ctx->opt) {
if (internal_help && *ctx->opt == 'h')
- return parse_options_usage(usagestr, options);
+ return parse_options_usage(ctx, usagestr, options, 0);
switch (parse_short_opt(ctx, options)) {
case -1:
- return parse_options_usage(usagestr, options);
+ return parse_options_usage(ctx, usagestr, options, 1);
case -2:
/* fake a short option thing to hide the fact that we may have
* started to parse aggregated stuff
@@ -414,12 +477,12 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
}
if (internal_help && !strcmp(arg + 2, "help-all"))
- return usage_with_options_internal(usagestr, options, 1);
+ return usage_with_options_internal(ctx, usagestr, options, 1, 0);
if (internal_help && !strcmp(arg + 2, "help"))
- return parse_options_usage(usagestr, options);
+ return parse_options_usage(ctx, usagestr, options, 0);
switch (parse_long_opt(ctx, arg + 2, options)) {
case -1:
- return parse_options_usage(usagestr, options);
+ return parse_options_usage(ctx, usagestr, options, 1);
case -2:
goto unknown;
}
@@ -446,25 +509,30 @@ int parse_options(int argc, const char **argv, const char *prefix,
{
struct parse_opt_ctx_t ctx;
- parse_options_start(&ctx, argc, argv, prefix, flags);
+ parse_options_start(&ctx, argc, argv, prefix, options, flags);
switch (parse_options_step(&ctx, options, usagestr)) {
case PARSE_OPT_HELP:
exit(129);
+ case PARSE_OPT_NON_OPTION:
case PARSE_OPT_DONE:
break;
default: /* PARSE_OPT_UNKNOWN */
if (ctx.argv[0][1] == '-') {
error("unknown option `%s'", ctx.argv[0] + 2);
- } else {
+ } else if (isascii(*ctx.opt)) {
error("unknown switch `%c'", *ctx.opt);
+ } else {
+ error("unknown non-ascii option in string: `%s'",
+ ctx.argv[0]);
}
usage_with_options(usagestr, options);
}
+ precompose_argv(argc, argv);
return parse_options_end(&ctx);
}
-static int usage_argh(const struct option *opts)
+static int usage_argh(const struct option *opts, FILE *outfile)
{
const char *s;
int literal = (opts->flags & PARSE_OPT_LITERAL_ARGHELP) || !opts->argh;
@@ -475,84 +543,95 @@ static int usage_argh(const struct option *opts)
s = literal ? "[%s]" : "[<%s>]";
else
s = literal ? " %s" : " <%s>";
- return fprintf(stderr, s, opts->argh ? opts->argh : "...");
+ return utf8_fprintf(outfile, s, opts->argh ? _(opts->argh) : _("..."));
}
#define USAGE_OPTS_WIDTH 24
#define USAGE_GAP 2
-static int usage_with_options_internal(const char * const *usagestr,
- const struct option *opts, int full)
+static int usage_with_options_internal(struct parse_opt_ctx_t *ctx,
+ const char * const *usagestr,
+ const struct option *opts, int full, int err)
{
+ FILE *outfile = err ? stderr : stdout;
+
if (!usagestr)
return PARSE_OPT_HELP;
- fprintf(stderr, "usage: %s\n", *usagestr++);
+ if (!err && ctx && ctx->flags & PARSE_OPT_SHELL_EVAL)
+ fprintf(outfile, "cat <<\\EOF\n");
+
+ fprintf_ln(outfile, _("usage: %s"), _(*usagestr++));
while (*usagestr && **usagestr)
- fprintf(stderr, " or: %s\n", *usagestr++);
+ /* TRANSLATORS: the colon here should align with the
+ one in "usage: %s" translation */
+ fprintf_ln(outfile, _(" or: %s"), _(*usagestr++));
while (*usagestr) {
- fprintf(stderr, "%s%s\n",
- **usagestr ? " " : "",
- *usagestr);
+ if (**usagestr)
+ fprintf_ln(outfile, _(" %s"), _(*usagestr));
+ else
+ putchar('\n');
usagestr++;
}
if (opts->type != OPTION_GROUP)
- fputc('\n', stderr);
+ fputc('\n', outfile);
for (; opts->type != OPTION_END; opts++) {
size_t pos;
int pad;
if (opts->type == OPTION_GROUP) {
- fputc('\n', stderr);
+ fputc('\n', outfile);
if (*opts->help)
- fprintf(stderr, "%s\n", opts->help);
+ fprintf(outfile, "%s\n", _(opts->help));
continue;
}
if (!full && (opts->flags & PARSE_OPT_HIDDEN))
continue;
- pos = fprintf(stderr, " ");
- if (opts->short_name && !(opts->flags & PARSE_OPT_NEGHELP)) {
+ pos = fprintf(outfile, " ");
+ if (opts->short_name) {
if (opts->flags & PARSE_OPT_NODASH)
- pos += fprintf(stderr, "%c", opts->short_name);
+ pos += fprintf(outfile, "%c", opts->short_name);
else
- pos += fprintf(stderr, "-%c", opts->short_name);
+ pos += fprintf(outfile, "-%c", opts->short_name);
}
if (opts->long_name && opts->short_name)
- pos += fprintf(stderr, ", ");
+ pos += fprintf(outfile, ", ");
if (opts->long_name)
- pos += fprintf(stderr, "--%s%s",
- (opts->flags & PARSE_OPT_NEGHELP) ? "no-" : "",
- opts->long_name);
+ pos += fprintf(outfile, "--%s", opts->long_name);
if (opts->type == OPTION_NUMBER)
- pos += fprintf(stderr, "-NUM");
+ pos += utf8_fprintf(outfile, _("-NUM"));
- if (!(opts->flags & PARSE_OPT_NOARG))
- pos += usage_argh(opts);
+ if ((opts->flags & PARSE_OPT_LITERAL_ARGHELP) ||
+ !(opts->flags & PARSE_OPT_NOARG))
+ pos += usage_argh(opts, outfile);
if (pos <= USAGE_OPTS_WIDTH)
pad = USAGE_OPTS_WIDTH - pos;
else {
- fputc('\n', stderr);
+ fputc('\n', outfile);
pad = USAGE_OPTS_WIDTH;
}
- fprintf(stderr, "%*s%s\n", pad + USAGE_GAP, "", opts->help);
+ fprintf(outfile, "%*s%s\n", pad + USAGE_GAP, "", _(opts->help));
}
- fputc('\n', stderr);
+ fputc('\n', outfile);
+
+ if (!err && ctx && ctx->flags & PARSE_OPT_SHELL_EVAL)
+ fputs("EOF\n", outfile);
return PARSE_OPT_HELP;
}
-void usage_with_options(const char * const *usagestr,
+void NORETURN usage_with_options(const char * const *usagestr,
const struct option *opts)
{
- usage_with_options_internal(usagestr, opts, 0);
+ usage_with_options_internal(NULL, usagestr, opts, 0, 1);
exit(129);
}
-void usage_msg_opt(const char *msg,
+void NORETURN usage_msg_opt(const char *msg,
const char * const *usagestr,
const struct option *options)
{
@@ -560,76 +639,19 @@ void usage_msg_opt(const char *msg,
usage_with_options(usagestr, options);
}
-int parse_options_usage(const char * const *usagestr,
- const struct option *opts)
-{
- return usage_with_options_internal(usagestr, opts, 0);
-}
-
-
-/*----- some often used options -----*/
-#include "cache.h"
-
-int parse_opt_abbrev_cb(const struct option *opt, const char *arg, int unset)
-{
- int v;
-
- if (!arg) {
- v = unset ? 0 : DEFAULT_ABBREV;
- } else {
- v = strtol(arg, (char **)&arg, 10);
- if (*arg)
- return opterror(opt, "expects a numerical value", 0);
- if (v && v < MINIMUM_ABBREV)
- v = MINIMUM_ABBREV;
- else if (v > 40)
- v = 40;
- }
- *(int *)(opt->value) = v;
- return 0;
-}
-
-int parse_opt_approxidate_cb(const struct option *opt, const char *arg,
- int unset)
-{
- *(unsigned long *)(opt->value) = approxidate(arg);
- return 0;
-}
-
-int parse_opt_verbosity_cb(const struct option *opt, const char *arg,
- int unset)
+static int parse_options_usage(struct parse_opt_ctx_t *ctx,
+ const char * const *usagestr,
+ const struct option *opts, int err)
{
- int *target = opt->value;
-
- if (unset)
- /* --no-quiet, --no-verbose */
- *target = 0;
- else if (opt->short_name == 'v') {
- if (*target >= 0)
- (*target)++;
- else
- *target = 1;
- } else {
- if (*target <= 0)
- (*target)--;
- else
- *target = -1;
- }
- return 0;
+ return usage_with_options_internal(ctx, usagestr, opts, 0, err);
}
-int parse_opt_with_commit(const struct option *opt, const char *arg, int unset)
+#undef opterror
+int opterror(const struct option *opt, const char *reason, int flags)
{
- unsigned char sha1[20];
- struct commit *commit;
-
- if (!arg)
- return -1;
- if (get_sha1(arg, sha1))
- return error("malformed object name %s", arg);
- commit = lookup_commit_reference(sha1);
- if (!commit)
- return error("no such commit %s", arg);
- commit_list_insert(commit, opt->value);
- return 0;
+ if (flags & OPT_SHORT)
+ return error("switch `%c' %s", opt->short_name, reason);
+ if (flags & OPT_UNSET)
+ return error("option `no-%s' %s", opt->long_name, reason);
+ return error("option `%s' %s", opt->long_name, reason);
}
generated by cgit v0.10.2-6-g49f6 at 2024-04-19 14:35:56 (GMT)