OPT_SUBCMD can be used for parsing git commands which has not only
short/long options, but subcomands. For example: git bundle (create,
verify and etc...) or git remote (add, rename and etc...)
Signed-off-by: Alexander Kuleshov <kuleshovm...@gmail.com>
---
parse-options.c | 25 +++++++++++++++++++++++++
parse-options.h | 8 ++++++++
t/t0040-parse-options.sh | 13 +++++++++++++
test-parse-options.c | 3 +++
4 files changed, 49 insertions(+)
diff --git a/parse-options.c b/parse-options.c
index 80106c0..79f971e 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -121,6 +121,10 @@ static int get_value(struct parse_opt_ctx_t *p,
*(int *)opt->value = unset ? 0 : opt->defval;
return 0;
+ case OPTION_SUBCMD:
+ *(int *)opt->value = 1;
+ return 0;
+
case OPTION_CMDMODE:
/*
* Giving the same mode option twice, although is unnecessary,
@@ -314,6 +318,17 @@ is_abbreviated:
return -2;
}
+static int parse_subcmd_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->long_name && !strcmp(options->long_name, arg))
+ return get_value(p, options, all_opts, 0);
+ }
+
+ return -2;
+}
+
static int parse_nodash_opt(struct parse_opt_ctx_t *p, const char *arg,
const struct option *options)
{
@@ -417,6 +432,7 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
const struct option *options,
const char * const usagestr[])
{
+ int argc = ctx->argc;
int internal_help = !(ctx->flags & PARSE_OPT_NO_INTERNAL_HELP);
/* we must reset ->opt, unknown short option leave it dangling */
@@ -426,6 +442,11 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
const char *arg = ctx->argv[0];
if (*arg != '-' || !arg[1]) {
+ if (ctx->argc == argc &&
+ options->type == OPTION_SUBCMD &&
+ parse_subcmd_opt(ctx, arg, options) == 0){
+ continue;
+ }
if (parse_nodash_opt(ctx, arg, options) == 0)
continue;
if (ctx->flags & PARSE_OPT_STOP_AT_NON_OPTION)
@@ -581,6 +602,10 @@ static int usage_with_options_internal(struct
parse_opt_ctx_t *ctx,
size_t pos;
int pad;
+ if (opts->type == OPTION_SUBCMD) {
+ continue;
+ }
+
if (opts->type == OPTION_GROUP) {
fputc('\n', outfile);
if (*opts->help)
diff --git a/parse-options.h b/parse-options.h
index 7940bc7..0e75a85 100644
--- a/parse-options.h
+++ b/parse-options.h
@@ -13,6 +13,8 @@ enum parse_opt_type {
OPTION_COUNTUP,
OPTION_SET_INT,
OPTION_CMDMODE,
+ OPTION_SUBCMD,
+
/* options with arguments (usually) */
OPTION_STRING,
OPTION_INTEGER,
@@ -115,6 +117,10 @@ struct option {
#define OPT_END() { OPTION_END }
#define OPT_ARGUMENT(l, h) { OPTION_ARGUMENT, 0, (l), NULL, NULL, \
(h), PARSE_OPT_NOARG}
+
+#define OPT_SUBCMD(l, v, h) { OPTION_SUBCMD, 0, (l), (v), NULL, \
+ (h), PARSE_OPT_NOARG}
+
#define OPT_GROUP(h) { OPTION_GROUP, 0, NULL, NULL, NULL, (h) }
#define OPT_BIT(s, l, v, h, b) { OPTION_BIT, (s), (l), (v), NULL, (h), \
PARSE_OPT_NOARG, NULL, (b) }
@@ -125,8 +131,10 @@ struct option {
#define OPT_SET_INT(s, l, v, h, i) { OPTION_SET_INT, (s), (l), (v), NULL, \
(h), PARSE_OPT_NOARG, NULL, (i) }
#define OPT_BOOL(s, l, v, h) OPT_SET_INT(s, l, v, h, 1)
+
#define OPT_HIDDEN_BOOL(s, l, v, h) { OPTION_SET_INT, (s), (l), (v), NULL, \
(h), PARSE_OPT_NOARG | PARSE_OPT_HIDDEN,
NULL, 1}
+
#define OPT_CMDMODE(s, l, v, h, i) { OPTION_CMDMODE, (s), (l), (v), NULL, \
(h), PARSE_OPT_NOARG|PARSE_OPT_NONEG,
NULL, (i) }
#define OPT_INTEGER(s, l, v, h) { OPTION_INTEGER, (s), (l), (v), N_("n"),
(h) }
diff --git a/t/t0040-parse-options.sh b/t/t0040-parse-options.sh
index a90c86b..7898a5a 100755
--- a/t/t0040-parse-options.sh
+++ b/t/t0040-parse-options.sh
@@ -65,6 +65,7 @@ verbose: 0
quiet: no
dry run: no
file: (not set)
+subcommand: 1
EOF
check() {
@@ -142,6 +143,7 @@ verbose: 2
quiet: no
dry run: yes
file: prefix/my.file
+subcommand: 1
EOF
test_expect_success 'short options' '
@@ -161,6 +163,7 @@ verbose: 2
quiet: no
dry run: no
file: prefix/fi.le
+subcommand: 1
EOF
test_expect_success 'long options' '
@@ -190,6 +193,7 @@ verbose: 0
quiet: no
dry run: no
file: (not set)
+subcommand: 1
arg 00: a1
arg 01: b1
arg 02: --boolean
@@ -212,6 +216,7 @@ verbose: 0
quiet: no
dry run: no
file: (not set)
+subcommand: 1
EOF
test_expect_success 'unambiguously abbreviated option' '
@@ -241,6 +246,7 @@ verbose: 0
quiet: no
dry run: no
file: (not set)
+subcommand: 1
EOF
test_expect_success 'non ambiguous option (after two options it abbreviates)' '
@@ -279,6 +285,7 @@ verbose: 0
quiet: no
dry run: no
file: (not set)
+subcommand: 1
arg 00: --quux
EOF
@@ -298,6 +305,7 @@ verbose: 0
quiet: yes
dry run: no
file: (not set)
+subcommand: 1
arg 00: foo
EOF
@@ -319,6 +327,7 @@ verbose: 0
quiet: no
dry run: no
file: (not set)
+subcommand: 1
EOF
test_expect_success 'OPT_CALLBACK() and OPT_BIT() work' '
@@ -347,6 +356,7 @@ verbose: 0
quiet: no
dry run: no
file: (not set)
+subcommand: 1
EOF
test_expect_success 'OPT_BIT() and OPT_SET_INT() work' '
@@ -371,6 +381,7 @@ verbose: 0
quiet: no
dry run: no
file: (not set)
+subcommand: 1
EOF
test_expect_success 'OPT_BIT() works' '
@@ -401,6 +412,7 @@ verbose: 0
quiet: no
dry run: no
file: (not set)
+subcommand: 1
EOF
test_expect_success 'OPT_NUMBER_CALLBACK() works' '
@@ -419,6 +431,7 @@ verbose: 0
quiet: no
dry run: no
file: (not set)
+subcommand: 1
EOF
test_expect_success 'negation of OPT_NONEG flags is not ambiguous' '
diff --git a/test-parse-options.c b/test-parse-options.c
index 5dabce6..96e2a21 100644
--- a/test-parse-options.c
+++ b/test-parse-options.c
@@ -11,6 +11,7 @@ static char *string = NULL;
static char *file = NULL;
static int ambiguous;
static struct string_list list;
+static int subcommand = 0;
static int length_callback(const struct option *opt, const char *arg, int
unset)
{
@@ -52,6 +53,7 @@ int main(int argc, char **argv)
OPT_DATE('t', NULL, ×tamp, "get timestamp of <time>"),
OPT_CALLBACK('L', "length", &integer, "str",
"get length of <str>", length_callback),
+ OPT_SUBCMD("subcommand", &subcommand, "get a subcommand"),
OPT_FILENAME('F', "file", &file, "set file to <file>"),
OPT_GROUP("String options"),
OPT_STRING('s', "string", &string, "string", "get a string"),
@@ -90,6 +92,7 @@ int main(int argc, char **argv)
printf("quiet: %s\n", quiet ? "yes" : "no");
printf("dry run: %s\n", dry_run ? "yes" : "no");
printf("file: %s\n", file ? file : "(not set)");
+ printf("subcommand: %d\n", 1);
for (i = 0; i < list.nr; i++)
printf("list: %s\n", list.items[i].string);
--
2.3.0.rc1.275.g028c360.dirty
--
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