[PATCH 3/5] parseopt: add PARSE_OPT_NODASH
From: René Scharfe <hidden>
Date: 2016-06-15 22:46:43
Subsystem:
the rest · Maintainer:
Linus Torvalds
Add support for options that don't start with a dash. Initially, they don't accept arguments and can only be short options, i.e. consist of a single character. Signed-off-by: Rene Scharfe <redacted> --- parse-options.c | 29 +++++++++++++++++++++++++++-- parse-options.h | 8 ++++++-- t/t0040-parse-options.sh | 7 +++++++ test-parse-options.c | 2 ++ 4 files changed, 42 insertions(+), 4 deletions(-)
diff --git a/parse-options.c b/parse-options.c
index aaa218d..c52b8cc 100644
--- a/parse-options.c
+++ b/parse-options.c@@ -245,6 +245,25 @@ 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)
@@ -295,6 +314,8 @@ 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];
@@ -427,8 +448,12 @@ 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)
diff --git a/parse-options.h b/parse-options.h
index 77919a7..919b9b4 100644
--- a/parse-options.h
+++ b/parse-options.h@@ -33,6 +33,7 @@ enum parse_opt_option_flags { PARSE_OPT_NONEG = 4, PARSE_OPT_HIDDEN = 8, PARSE_OPT_LASTARG_DEFAULT = 16, + PARSE_OPT_NODASH = 32, }; struct option;
@@ -66,8 +67,11 @@ typedef int parse_opt_cb(const struct option *, const char *arg, int unset); * PARSE_OPT_OPTARG: says that the argument is optional (not for BOOLEANs) * PARSE_OPT_NOARG: says that this option takes no argument, for CALLBACKs * PARSE_OPT_NONEG: says that this option cannot be negated - * PARSE_OPT_HIDDEN this option is skipped in the default usage, showed in - * the long one. + * PARSE_OPT_HIDDEN: this option is skipped in the default usage, and + * shown only in the full usage. + * PARSE_OPT_LASTARG_DEFAULT: if no argument is given, the default value + * is used. + * PARSE_OPT_NODASH: this option doesn't start with a dash. * * `callback`:: * pointer to the callback to use for OPTION_CALLBACK.
diff --git a/t/t0040-parse-options.sh b/t/t0040-parse-options.sh
index 8ca62ef..a40c123 100755
--- a/t/t0040-parse-options.sh
+++ b/t/t0040-parse-options.sh@@ -31,6 +31,7 @@ String options Magic arguments --quux means --quux -NUM set integer to NUM + + same as -b Standard options --abbrev[=<n>] use <n> digits to display SHA-1s
@@ -276,6 +277,12 @@ test_expect_success 'OPT_NEGBIT() works' ' test_cmp expect output ' +test_expect_success 'OPT_BOOLEAN() with PARSE_OPT_NODASH works' ' + test-parse-options + + + + + + > output 2> output.err && + test ! -s output.err && + test_cmp expect output +' + cat > expect <<EOF boolean: 0 integer: 12345
diff --git a/test-parse-options.c b/test-parse-options.c
index d46eac2..e0669dc 100644
--- a/test-parse-options.c
+++ b/test-parse-options.c@@ -54,6 +54,8 @@ int main(int argc, const char **argv) OPT_ARGUMENT("quux", "means --quux"), OPT_NUMBER_CALLBACK(&integer, "set integer to NUM", number_callback), + { OPTION_BOOLEAN, '+', NULL, &boolean, NULL, "same as -b", + PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH }, OPT_GROUP("Standard options"), OPT__ABBREV(&abbrev), OPT__VERBOSE(&verbose),
--
1.6.3