summaryrefslogtreecommitdiff
path: root/parse-options.c
diff options
context:
space:
mode:
Diffstat (limited to 'parse-options.c')
-rw-r--r--parse-options.c160
1 files changed, 132 insertions, 28 deletions
diff --git a/parse-options.c b/parse-options.c
index cf71bcffd2..79de18b37e 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -31,11 +31,20 @@ static int get_arg(struct parse_opt_ctx_t *p, const struct option *opt,
return 0;
}
+static void fix_filename(const char *prefix, const char **file)
+{
+ if (!file || !*file || !prefix || is_absolute_path(*file)
+ || !strcmp("-", *file))
+ return;
+ *file = xstrdup(prefix_filename(prefix, strlen(prefix), *file));
+}
+
static int get_value(struct parse_opt_ctx_t *p,
const struct option *opt, int flags)
{
const char *s, *arg;
const int unset = flags & OPT_UNSET;
+ int err;
if (unset && p->opt)
return opterror(opt, "takes no value", flags);
@@ -50,6 +59,7 @@ static int get_value(struct parse_opt_ctx_t *p,
/* 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);
@@ -66,6 +76,13 @@ static int get_value(struct parse_opt_ctx_t *p,
*(int *)opt->value |= opt->defval;
return 0;
+ case OPTION_NEGBIT:
+ if (unset)
+ *(int *)opt->value |= opt->defval;
+ else
+ *(int *)opt->value &= ~opt->defval;
+ return 0;
+
case OPTION_BOOLEAN:
*(int *)opt->value = unset ? 0 : *(int *)opt->value + 1;
return 0;
@@ -87,6 +104,19 @@ static int get_value(struct parse_opt_ctx_t *p,
return get_arg(p, opt, flags, (const char **)opt->value);
return 0;
+ case OPTION_FILENAME:
+ err = 0;
+ if (unset)
+ *(const char **)opt->value = NULL;
+ else if (opt->flags & PARSE_OPT_OPTARG && !p->opt)
+ *(const char **)opt->value = (const char *)opt->defval;
+ else
+ err = get_arg(p, opt, flags, (const char **)opt->value);
+
+ if (!err)
+ fix_filename(p->prefix, (const char **)opt->value);
+ return err;
+
case OPTION_CALLBACK:
if (unset)
return (*opt->callback)(opt, NULL, 1) ? (-1) : 0;
@@ -121,11 +151,33 @@ 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 *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);
}
+
+ /*
+ * Handle the numerical option later, explicit one-digit
+ * options take precedence over it.
+ */
+ if (options->type == OPTION_NUMBER)
+ numopt = options;
+ }
+ if (numopt && isdigit(*p->opt)) {
+ size_t len = 1;
+ char *arg;
+ int rc;
+
+ while (isdigit(p->opt[len]))
+ len++;
+ arg = xmemdupz(p->opt, len);
+ p->opt = p->opt[len] ? p->opt + len : NULL;
+ rc = (*numopt->callback)(numopt, arg, 0) ? (-1) : 0;
+ free(arg);
+ return rc;
}
return -2;
}
@@ -215,6 +267,25 @@ is_abbreviated:
return -2;
}
+static int parse_nodash_opt(struct parse_opt_ctx_t *p, const char *arg,
+ const struct option *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 -2;
+}
+
static void check_typos(const char *arg, const struct option *options)
{
if (strlen(arg) < 3)
@@ -235,13 +306,37 @@ static void check_typos(const char *arg, const struct option *options)
}
}
+static void parse_options_check(const struct option *opts)
+{
+ int err = 0;
+
+ 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;
+ }
+ }
+
+ if (err)
+ exit(129);
+}
+
void parse_options_start(struct parse_opt_ctx_t *ctx,
- int argc, const char **argv, int flags)
+ int argc, const char **argv, const char *prefix,
+ int flags)
{
memset(ctx, 0, sizeof(*ctx));
ctx->argc = argc - 1;
ctx->argv = argv + 1;
ctx->out = argv;
+ ctx->prefix = prefix;
ctx->cpidx = ((flags & PARSE_OPT_KEEP_ARGV0) != 0);
ctx->flags = flags;
if ((flags & PARSE_OPT_KEEP_UNKNOWN) &&
@@ -258,6 +353,8 @@ 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;
@@ -265,6 +362,8 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
const char *arg = ctx->argv[0];
if (*arg != '-' || !arg[1]) {
+ if (parse_nodash_opt(ctx, arg, options) == 0)
+ continue;
if (ctx->flags & PARSE_OPT_STOP_AT_NON_OPTION)
break;
ctx->out[ctx->cpidx++] = ctx->argv[0];
@@ -338,12 +437,13 @@ int parse_options_end(struct parse_opt_ctx_t *ctx)
return ctx->cpidx + ctx->argc;
}
-int parse_options(int argc, const char **argv, const struct option *options,
- const char * const usagestr[], int flags)
+int parse_options(int argc, const char **argv, const char *prefix,
+ const struct option *options, const char * const usagestr[],
+ int flags)
{
struct parse_opt_ctx_t ctx;
- parse_options_start(&ctx, argc, argv, flags);
+ parse_options_start(&ctx, argc, argv, prefix, flags);
switch (parse_options_step(&ctx, options, usagestr)) {
case PARSE_OPT_HELP:
exit(129);
@@ -361,6 +461,20 @@ int parse_options(int argc, const char **argv, const struct option *options,
return parse_options_end(&ctx);
}
+static int usage_argh(const struct option *opts)
+{
+ const char *s;
+ int literal = opts->flags & PARSE_OPT_LITERAL_ARGHELP;
+ if (opts->flags & PARSE_OPT_OPTARG)
+ if (opts->long_name)
+ s = literal ? "[=%s]" : "[=<%s>]";
+ else
+ s = literal ? "[%s]" : "[<%s>]";
+ else
+ s = literal ? " %s" : " <%s>";
+ return fprintf(stderr, s, opts->argh);
+}
+
#define USAGE_OPTS_WIDTH 24
#define USAGE_GAP 2
@@ -397,12 +511,18 @@ int usage_with_options_internal(const char * const *usagestr,
continue;
pos = fprintf(stderr, " ");
- if (opts->short_name)
- pos += fprintf(stderr, "-%c", opts->short_name);
+ if (opts->short_name) {
+ if (opts->flags & PARSE_OPT_NODASH)
+ pos += fprintf(stderr, "%c", opts->short_name);
+ else
+ pos += fprintf(stderr, "-%c", opts->short_name);
+ }
if (opts->long_name && opts->short_name)
pos += fprintf(stderr, ", ");
if (opts->long_name)
pos += fprintf(stderr, "--%s", opts->long_name);
+ if (opts->type == OPTION_NUMBER)
+ pos += fprintf(stderr, "-NUM");
switch (opts->type) {
case OPTION_ARGUMENT:
@@ -420,16 +540,12 @@ int usage_with_options_internal(const char * const *usagestr,
if (opts->flags & PARSE_OPT_NOARG)
break;
/* FALLTHROUGH */
+ case OPTION_FILENAME:
+ /* FALLTHROUGH */
case OPTION_STRING:
- if (opts->argh) {
- if (opts->flags & PARSE_OPT_OPTARG)
- if (opts->long_name)
- pos += fprintf(stderr, "[=<%s>]", opts->argh);
- else
- pos += fprintf(stderr, "[<%s>]", opts->argh);
- else
- pos += fprintf(stderr, " <%s>", opts->argh);
- } else {
+ if (opts->argh)
+ pos += usage_argh(opts);
+ else {
if (opts->flags & PARSE_OPT_OPTARG)
if (opts->long_name)
pos += fprintf(stderr, "[=...]");
@@ -439,7 +555,7 @@ int usage_with_options_internal(const char * const *usagestr,
pos += fprintf(stderr, " ...");
}
break;
- default: /* OPTION_{BIT,BOOLEAN,SET_INT,SET_PTR} */
+ default: /* OPTION_{BIT,BOOLEAN,NUMBER,SET_INT,SET_PTR} */
break;
}
@@ -536,15 +652,3 @@ int parse_opt_with_commit(const struct option *opt, const char *arg, int unset)
commit_list_insert(commit, opt->value);
return 0;
}
-
-/*
- * This should really be OPTION_FILENAME type as a part of
- * parse_options that take prefix to do this while parsing.
- */
-extern const char *parse_options_fix_filename(const char *prefix, const char *file)
-{
- if (!file || !prefix || is_absolute_path(file) || !strcmp("-", file))
- return file;
- return prefix_filename(prefix, strlen(prefix), file);
-}
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-24 08:32:02 +0000