From: "Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>
To: git@vger.kernel.org
Cc: "Stefan Beller" <sbeller@google.com>,
"Junio C Hamano" <gitster@pobox.com>,
"Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>
Subject: [PATCH 07/14] parse-options: allow ll_callback with OPTION_CALLBACK
Date: Sun, 27 Jan 2019 07:35:28 +0700 [thread overview]
Message-ID: <20190127003535.28341-8-pclouds@gmail.com> (raw)
In-Reply-To: <20190127003535.28341-1-pclouds@gmail.com>
OPTION_CALLBACK is much simpler/safer to use, but parse_opt_cb does
not allow access to parse_opt_ctx_t, which sometimes is useful
(e.g. to obtain the prefix).
Extending parse_opt_cb to take parse_opt_cb could result in a lot of
changes. Instead let's just allow ll_callback to be used with
OPTION_CALLBACK. The user will have to be careful, not to change
anything in ctx, or return wrong result code. But that's the price for
ll_callback.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
builtin/merge.c | 2 ++
builtin/update-index.c | 20 +++++++++++++++-----
parse-options-cb.c | 4 +++-
parse-options.c | 42 ++++++++++++++++++++++++++++--------------
parse-options.h | 5 +++--
5 files changed, 51 insertions(+), 22 deletions(-)
diff --git a/builtin/merge.c b/builtin/merge.c
index de64d7850e..563a16f38a 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -114,11 +114,13 @@ static int option_parse_message(const struct option *opt,
static enum parse_opt_result option_read_message(struct parse_opt_ctx_t *ctx,
const struct option *opt,
+ const char *arg_not_used,
int unset)
{
struct strbuf *buf = opt->value;
const char *arg;
+ BUG_ON_OPT_ARG(arg_not_used);
if (unset)
BUG("-F cannot be negated");
diff --git a/builtin/update-index.c b/builtin/update-index.c
index 21c84e5590..7abde20169 100644
--- a/builtin/update-index.c
+++ b/builtin/update-index.c
@@ -848,13 +848,15 @@ static int parse_new_style_cacheinfo(const char *arg,
}
static enum parse_opt_result cacheinfo_callback(
- struct parse_opt_ctx_t *ctx, const struct option *opt, int unset)
+ struct parse_opt_ctx_t *ctx, const struct option *opt,
+ const char *arg, int unset)
{
struct object_id oid;
unsigned int mode;
const char *path;
BUG_ON_OPT_NEG(unset);
+ BUG_ON_OPT_ARG(arg);
if (!parse_new_style_cacheinfo(ctx->argv[1], &mode, &oid, &path)) {
if (add_cacheinfo(mode, &oid, path, 0))
@@ -874,11 +876,13 @@ static enum parse_opt_result cacheinfo_callback(
}
static enum parse_opt_result stdin_cacheinfo_callback(
- struct parse_opt_ctx_t *ctx, const struct option *opt, int unset)
+ struct parse_opt_ctx_t *ctx, const struct option *opt,
+ const char *arg, int unset)
{
int *nul_term_line = opt->value;
BUG_ON_OPT_NEG(unset);
+ BUG_ON_OPT_ARG(arg);
if (ctx->argc != 1)
return error("option '%s' must be the last argument", opt->long_name);
@@ -888,11 +892,13 @@ static enum parse_opt_result stdin_cacheinfo_callback(
}
static enum parse_opt_result stdin_callback(
- struct parse_opt_ctx_t *ctx, const struct option *opt, int unset)
+ struct parse_opt_ctx_t *ctx, const struct option *opt,
+ const char *arg, int unset)
{
int *read_from_stdin = opt->value;
BUG_ON_OPT_NEG(unset);
+ BUG_ON_OPT_ARG(arg);
if (ctx->argc != 1)
return error("option '%s' must be the last argument", opt->long_name);
@@ -901,12 +907,14 @@ static enum parse_opt_result stdin_callback(
}
static enum parse_opt_result unresolve_callback(
- struct parse_opt_ctx_t *ctx, const struct option *opt, int unset)
+ struct parse_opt_ctx_t *ctx, const struct option *opt,
+ const char *arg, int unset)
{
int *has_errors = opt->value;
const char *prefix = startup_info->prefix;
BUG_ON_OPT_NEG(unset);
+ BUG_ON_OPT_ARG(arg);
/* consume remaining arguments. */
*has_errors = do_unresolve(ctx->argc, ctx->argv,
@@ -920,12 +928,14 @@ static enum parse_opt_result unresolve_callback(
}
static enum parse_opt_result reupdate_callback(
- struct parse_opt_ctx_t *ctx, const struct option *opt, int unset)
+ struct parse_opt_ctx_t *ctx, const struct option *opt,
+ const char *arg, int unset)
{
int *has_errors = opt->value;
const char *prefix = startup_info->prefix;
BUG_ON_OPT_NEG(unset);
+ BUG_ON_OPT_ARG(arg);
/* consume remaining arguments. */
setup_work_tree();
diff --git a/parse-options-cb.c b/parse-options-cb.c
index ec01ef722b..2733393546 100644
--- a/parse-options-cb.c
+++ b/parse-options-cb.c
@@ -171,8 +171,10 @@ int parse_opt_noop_cb(const struct option *opt, const char *arg, int unset)
* parse_options().
*/
enum parse_opt_result parse_opt_unknown_cb(struct parse_opt_ctx_t *ctx,
- const struct option *opt, int unset)
+ const struct option *opt,
+ const char *arg, int unset)
{
+ BUG_ON_OPT_ARG(arg);
return PARSE_OPT_UNKNOWN;
}
diff --git a/parse-options.c b/parse-options.c
index 50c340474c..cec74522e5 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -95,7 +95,7 @@ static enum parse_opt_result get_value(struct parse_opt_ctx_t *p,
switch (opt->type) {
case OPTION_LOWLEVEL_CALLBACK:
- return opt->ll_callback(p, opt, unset);
+ return opt->ll_callback(p, opt, NULL, unset);
case OPTION_BIT:
if (unset)
@@ -161,16 +161,27 @@ static enum parse_opt_result get_value(struct parse_opt_ctx_t *p,
return err;
case OPTION_CALLBACK:
+ {
+ const char *p_arg = NULL;
+ int p_unset;
+
if (unset)
- return (*opt->callback)(opt, NULL, 1) ? (-1) : 0;
- if (opt->flags & PARSE_OPT_NOARG)
- return (*opt->callback)(opt, NULL, 0) ? (-1) : 0;
- if (opt->flags & PARSE_OPT_OPTARG && !p->opt)
- return (*opt->callback)(opt, NULL, 0) ? (-1) : 0;
- if (get_arg(p, opt, flags, &arg))
+ p_unset = 1;
+ else if (opt->flags & PARSE_OPT_NOARG)
+ p_unset = 0;
+ else if (opt->flags & PARSE_OPT_OPTARG && !p->opt)
+ p_unset = 0;
+ else if (get_arg(p, opt, flags, &arg))
return -1;
- return (*opt->callback)(opt, arg, 0) ? (-1) : 0;
-
+ else {
+ p_unset = 0;
+ p_arg = arg;
+ }
+ if (opt->callback)
+ return (*opt->callback)(opt, p_arg, p_unset) ? (-1) : 0;
+ else
+ return (*opt->ll_callback)(p, opt, p_arg, p_unset);
+ }
case OPTION_INTEGER:
if (unset) {
*(int *)opt->value = 0;
@@ -238,7 +249,10 @@ static enum parse_opt_result parse_short_opt(struct parse_opt_ctx_t *p,
len++;
arg = xmemdupz(p->opt, len);
p->opt = p->opt[len] ? p->opt + len : NULL;
- rc = (*numopt->callback)(numopt, arg, 0) ? (-1) : 0;
+ if (numopt->callback)
+ rc = (*numopt->callback)(numopt, arg, 0) ? (-1) : 0;
+ else
+ rc = (*numopt->ll_callback)(p, numopt, arg, 0);
free(arg);
return rc;
}
@@ -414,10 +428,10 @@ static void parse_options_check(const struct option *opts)
err |= optbug(opts, "should not accept an argument");
break;
case OPTION_CALLBACK:
- if (!opts->callback)
- BUG("OPTION_CALLBACK needs a callback");
- if (opts->ll_callback)
- BUG("OPTION_CALLBACK needs no ll_callback");
+ if (!opts->callback && !opts->ll_callback)
+ BUG("OPTION_CALLBACK needs one callback");
+ if (opts->callback && opts->ll_callback)
+ BUG("OPTION_CALLBACK can't have two callbacks");
break;
case OPTION_LOWLEVEL_CALLBACK:
if (!opts->ll_callback)
diff --git a/parse-options.h b/parse-options.h
index 4e49185027..ce75278804 100644
--- a/parse-options.h
+++ b/parse-options.h
@@ -50,7 +50,8 @@ typedef int parse_opt_cb(const struct option *, const char *arg, int unset);
struct parse_opt_ctx_t;
typedef enum parse_opt_result parse_opt_ll_cb(struct parse_opt_ctx_t *ctx,
- const struct option *opt, int unset);
+ const struct option *opt,
+ const char *arg, int unset);
/*
* `type`::
@@ -267,7 +268,7 @@ int parse_opt_commits(const struct option *, const char *, int);
int parse_opt_tertiary(const struct option *, const char *, int);
int parse_opt_string_list(const struct option *, const char *, int);
int parse_opt_noop_cb(const struct option *, const char *, int);
-int parse_opt_unknown_cb(struct parse_opt_ctx_t *ctx, const struct option *, int);
+int parse_opt_unknown_cb(struct parse_opt_ctx_t *ctx, const struct option *, const char *, int);
int parse_opt_passthru(const struct option *, const char *, int);
int parse_opt_passthru_argv(const struct option *, const char *, int);
--
2.20.1.560.g70ca8b83ee
next prev parent reply other threads:[~2019-01-27 0:36 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-27 0:35 [PATCH 00/14] nd/diff-parseopt part 1 Nguyễn Thái Ngọc Duy
2019-01-27 0:35 ` [PATCH 01/14] parse-options.h: remove extern on function prototypes Nguyễn Thái Ngọc Duy
2019-01-27 0:35 ` [PATCH 02/14] parse-options: add one-shot mode Nguyễn Thái Ngọc Duy
2019-01-27 0:35 ` [PATCH 03/14] parse-options: disable option abbreviation with PARSE_OPT_KEEP_UNKNOWN Nguyễn Thái Ngọc Duy
2019-01-27 0:35 ` [PATCH 04/14] parse-options: add OPT_BITOP() Nguyễn Thái Ngọc Duy
2019-01-27 0:35 ` [PATCH 05/14] parse-options: stop abusing 'callback' for lowlevel callbacks Nguyễn Thái Ngọc Duy
2019-01-27 0:35 ` [PATCH 06/14] parse-options: avoid magic return codes Nguyễn Thái Ngọc Duy
2019-01-27 0:35 ` Nguyễn Thái Ngọc Duy [this message]
2019-04-15 14:06 ` [PATCH 07/14] parse-options: allow ll_callback with OPTION_CALLBACK Derrick Stolee
2019-04-16 8:52 ` Duy Nguyen
2019-04-16 14:24 ` Derrick Stolee
2019-01-27 0:35 ` [PATCH 08/14] diff.h: keep forward struct declarations sorted Nguyễn Thái Ngọc Duy
2019-01-27 0:35 ` [PATCH 09/14] diff.h: avoid bit fields in struct diff_flags Nguyễn Thái Ngọc Duy
2019-01-27 0:35 ` [PATCH 10/14] diff.c: prepare to use parse_options() for parsing Nguyễn Thái Ngọc Duy
2019-01-27 0:35 ` [PATCH 11/14] diff.c: convert -u|-p|--patch Nguyễn Thái Ngọc Duy
2019-01-27 0:35 ` [PATCH 12/14] diff.c: convert -U|--unified Nguyễn Thái Ngọc Duy
2019-01-27 0:35 ` [PATCH 13/14] diff.c: convert -W|--[no-]function-context Nguyễn Thái Ngọc Duy
2019-01-27 0:35 ` [PATCH 14/14] diff.c: convert --raw Nguyễn Thái Ngọc Duy
2019-01-28 0:33 ` [PATCH 00/14] nd/diff-parseopt part 1 Junio C Hamano
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