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authorPierre Habouzit <madcoder@debian.org>2008-06-23 19:59:37 (GMT)
committerJunio C Hamano <gitster@pobox.com>2008-06-30 21:51:12 (GMT)
commit7e7bbcb4b35cbb4bbb5e65cf057c84b16dbd3d39 (patch)
treeecaf8d36e04e44317936634c0eabdc714f07fc50 /parse-options.c
parent112db553b0db4c4f2b39e5e3e433b2102be10085 (diff)
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parse-opt: have parse_options_{start,end}.
Make the struct optparse_t public under the better name parse_opt_ctx_t. Signed-off-by: Pierre Habouzit <madcoder@debian.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'parse-options.c')
-rw-r--r--parse-options.c69
1 files changed, 39 insertions, 30 deletions
diff --git a/parse-options.c b/parse-options.c
index b8bde2b..9964877 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -4,14 +4,7 @@
#define OPT_SHORT 1
#define OPT_UNSET 2
-struct optparse_t {
- const char **argv;
- const char **out;
- int argc, cpidx;
- const char *opt;
-};
-
-static inline const char *get_arg(struct optparse_t *p)
+static inline const char *get_arg(struct parse_opt_ctx_t *p)
{
if (p->opt) {
const char *res = p->opt;
@@ -37,7 +30,7 @@ static int opterror(const struct option *opt, const char *reason, int flags)
return error("option `%s' %s", opt->long_name, reason);
}
-static int get_value(struct optparse_t *p,
+static int get_value(struct parse_opt_ctx_t *p,
const struct option *opt, int flags)
{
const char *s, *arg;
@@ -131,7 +124,7 @@ static int get_value(struct optparse_t *p,
}
}
-static int parse_short_opt(struct optparse_t *p, const struct option *options)
+static int parse_short_opt(struct parse_opt_ctx_t *p, const struct option *options)
{
for (; options->type != OPTION_END; options++) {
if (options->short_name == *p->opt) {
@@ -142,7 +135,7 @@ static int parse_short_opt(struct optparse_t *p, const struct option *options)
return error("unknown switch `%c'", *p->opt);
}
-static int parse_long_opt(struct optparse_t *p, const char *arg,
+static int parse_long_opt(struct parse_opt_ctx_t *p, const char *arg,
const struct option *options)
{
const char *arg_end = strchr(arg, '=');
@@ -247,45 +240,63 @@ void check_typos(const char *arg, const struct option *options)
}
}
+void parse_options_start(struct parse_opt_ctx_t *ctx,
+ int argc, const char **argv, int flags)
+{
+ memset(ctx, 0, sizeof(*ctx));
+ ctx->argc = argc - 1;
+ ctx->argv = argv + 1;
+ ctx->out = argv;
+ ctx->flags = flags;
+}
+
+int parse_options_end(struct parse_opt_ctx_t *ctx)
+{
+ memmove(ctx->out + ctx->cpidx, ctx->argv, ctx->argc * sizeof(*ctx->out));
+ ctx->out[ctx->cpidx + ctx->argc] = NULL;
+ return ctx->cpidx + ctx->argc;
+}
+
static NORETURN void usage_with_options_internal(const char * const *,
const struct option *, int);
int parse_options(int argc, const char **argv, const struct option *options,
const char * const usagestr[], int flags)
{
- struct optparse_t args = { argv + 1, argv, argc - 1, 0, NULL };
+ struct parse_opt_ctx_t ctx;
- for (; args.argc; args.argc--, args.argv++) {
- const char *arg = args.argv[0];
+ parse_options_start(&ctx, argc, argv, flags);
+ for (; ctx.argc; ctx.argc--, ctx.argv++) {
+ const char *arg = ctx.argv[0];
if (*arg != '-' || !arg[1]) {
- if (flags & PARSE_OPT_STOP_AT_NON_OPTION)
+ if (ctx.flags & PARSE_OPT_STOP_AT_NON_OPTION)
break;
- args.out[args.cpidx++] = args.argv[0];
+ ctx.out[ctx.cpidx++] = ctx.argv[0];
continue;
}
if (arg[1] != '-') {
- args.opt = arg + 1;
- if (*args.opt == 'h')
+ ctx.opt = arg + 1;
+ if (*ctx.opt == 'h')
usage_with_options(usagestr, options);
- if (parse_short_opt(&args, options) < 0)
+ if (parse_short_opt(&ctx, options) < 0)
usage_with_options(usagestr, options);
- if (args.opt)
+ if (ctx.opt)
check_typos(arg + 1, options);
- while (args.opt) {
- if (*args.opt == 'h')
+ while (ctx.opt) {
+ if (*ctx.opt == 'h')
usage_with_options(usagestr, options);
- if (parse_short_opt(&args, options) < 0)
+ if (parse_short_opt(&ctx, options) < 0)
usage_with_options(usagestr, options);
}
continue;
}
if (!arg[2]) { /* "--" */
- if (!(flags & PARSE_OPT_KEEP_DASHDASH)) {
- args.argc--;
- args.argv++;
+ if (!(ctx.flags & PARSE_OPT_KEEP_DASHDASH)) {
+ ctx.argc--;
+ ctx.argv++;
}
break;
}
@@ -294,13 +305,11 @@ int parse_options(int argc, const char **argv, const struct option *options,
usage_with_options_internal(usagestr, options, 1);
if (!strcmp(arg + 2, "help"))
usage_with_options(usagestr, options);
- if (parse_long_opt(&args, arg + 2, options))
+ if (parse_long_opt(&ctx, arg + 2, options))
usage_with_options(usagestr, options);
}
- memmove(args.out + args.cpidx, args.argv, args.argc * sizeof(*args.out));
- args.out[args.cpidx + args.argc] = NULL;
- return args.cpidx + args.argc;
+ return parse_options_end(&ctx);
}
#define USAGE_OPTS_WIDTH 24