From: Patrick Steinhardt <ps@pks.im>
To: git@vger.kernel.org
Cc: "Simon Ruderich" <simon@ruderich.org>,
"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
"Junio C Hamano" <gitster@pobox.com>, "Jeff King" <peff@peff.net>,
"brian m. carlson" <sandals@crustytoothpaste.net>,
"Philip Oakley" <philipoakley@iee.email>
Subject: [PATCH v8 3/8] quote: make sq_dequote_step() a public function
Date: Tue, 12 Jan 2021 13:26:49 +0100 [thread overview]
Message-ID: <7a7a4ae234d30c56e04c19a5e5b47afaa8680c72.1610453228.git.ps@pks.im> (raw)
In-Reply-To: <cover.1610453228.git.ps@pks.im>
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From: Jeff King <peff@peff.net>
We provide a function for dequoting an entire string, as well as one for
handling a space-separated list of quoted strings. But there's no way
for a caller to parse a string like 'foo'='bar', even though it is easy
to generate one using sq_quote_buf() or similar.
Let's make the single-step function available to callers outside of
quote.c. Note that we do need to adjust its implementation slightly: it
insists on seeing whitespace between items, and we'd like to be more
flexible than that. Since it only has a single caller, we can move that
check (and slurping up any extra whitespace) into that caller.
Signed-off-by: Jeff King <peff@peff.net>
---
quote.c | 15 ++++++++++-----
quote.h | 18 ++++++++++++++++--
2 files changed, 26 insertions(+), 7 deletions(-)
diff --git a/quote.c b/quote.c
index 69f4ca45da..8a3a5e39eb 100644
--- a/quote.c
+++ b/quote.c
@@ -116,7 +116,7 @@ void sq_append_quote_argv_pretty(struct strbuf *dst, const char **argv)
}
}
-static char *sq_dequote_step(char *arg, char **next)
+char *sq_dequote_step(char *arg, char **next)
{
char *dst = arg;
char *src = arg;
@@ -153,11 +153,8 @@ static char *sq_dequote_step(char *arg, char **next)
}
/* Fallthrough */
default:
- if (!next || !isspace(*src))
+ if (!next)
return NULL;
- do {
- c = *++src;
- } while (isspace(c));
*dst = 0;
*next = src;
return arg;
@@ -182,6 +179,14 @@ static int sq_dequote_to_argv_internal(char *arg,
char *dequoted = sq_dequote_step(next, &next);
if (!dequoted)
return -1;
+ if (next) {
+ char c;
+ if (!isspace(*next))
+ return -1;
+ do {
+ c = *++next;
+ } while (isspace(c));
+ }
if (argv) {
ALLOC_GROW(*argv, *nr + 1, *alloc);
(*argv)[(*nr)++] = dequoted;
diff --git a/quote.h b/quote.h
index 4b72a583cf..768cc6338e 100644
--- a/quote.h
+++ b/quote.h
@@ -42,12 +42,26 @@ void sq_quote_buf_pretty(struct strbuf *, const char *src);
void sq_quote_argv_pretty(struct strbuf *, const char **argv);
void sq_append_quote_argv_pretty(struct strbuf *dst, const char **argv);
-/* This unwraps what sq_quote() produces in place, but returns
+/*
+ * This unwraps what sq_quote() produces in place, but returns
* NULL if the input does not look like what sq_quote would have
- * produced.
+ * produced (the full string must be a single quoted item).
*/
char *sq_dequote(char *);
+/*
+ * Like sq_dequote(), but dequote a single item, and leave "next" pointing to
+ * the next character. E.g., in the string:
+ *
+ * 'one' 'two' 'three'
+ *
+ * after the first call, the return value would be the unquoted string "one",
+ * with "next" pointing to the space between "one" and "two"). The caller is
+ * responsible for advancing the pointer to the start of the next item before
+ * calling sq_dequote_step() again.
+ */
+char *sq_dequote_step(char *src, char **next);
+
/*
* Same as the above, but can be used to unwrap many arguments in the
* same string separated by space. Like sq_quote, it works in place,
--
2.30.0
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next prev parent reply other threads:[~2021-01-12 12:28 UTC|newest]
Thread overview: 116+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-24 10:50 [PATCH v2 0/2] config: allow specifying config entries via envvar pairs Patrick Steinhardt
2020-11-24 10:50 ` [PATCH v2 1/2] config: extract function to parse config pairs Patrick Steinhardt
2020-11-24 10:50 ` [PATCH v2 2/2] config: allow specifying config entries via envvar pairs Patrick Steinhardt
2020-11-25 3:39 ` Junio C Hamano
2020-11-25 7:06 ` Patrick Steinhardt
2020-11-25 7:41 ` Junio C Hamano
2020-11-25 7:57 ` Patrick Steinhardt
2020-11-25 8:47 ` Ævar Arnfjörð Bjarmason
2020-11-25 9:00 ` Ævar Arnfjörð Bjarmason
2020-11-25 19:50 ` Junio C Hamano
2020-11-25 10:41 ` [PATCH v2 0/2] " Jeff King
2020-11-25 13:16 ` Patrick Steinhardt
2020-11-26 0:36 ` Jeff King
2020-11-25 20:28 ` Junio C Hamano
2020-11-25 22:47 ` brian m. carlson
2020-11-26 6:31 ` Patrick Steinhardt
2020-12-01 9:47 ` Patrick Steinhardt
2020-12-01 11:30 ` Jeff King
2020-12-01 9:55 ` [PATCH v3 0/4] " Patrick Steinhardt
2020-12-01 9:55 ` [PATCH v3 1/4] environment: make `getenv_safe()` non-static Patrick Steinhardt
2020-12-01 9:56 ` [PATCH v3 2/4] config: extract function to parse config pairs Patrick Steinhardt
2020-12-01 9:56 ` [PATCH v3 3/4] config: refactor parsing of GIT_CONFIG_PARAMETERS Patrick Steinhardt
2020-12-01 9:56 ` [PATCH v3 4/4] config: allow specifying config entries via envvar pairs Patrick Steinhardt
2020-12-09 11:52 ` [PATCH v4 0/6] config: allow specifying config entries via env Patrick Steinhardt
2020-12-09 11:52 ` [PATCH v4 1/6] git: add `--super-prefix` to usage string Patrick Steinhardt
2020-12-09 11:52 ` [PATCH v4 2/6] config: add new way to pass config via `--config-env` Patrick Steinhardt
2020-12-09 14:40 ` Ævar Arnfjörð Bjarmason
2020-12-09 16:24 ` Jeff King
2020-12-11 13:24 ` Patrick Steinhardt
2020-12-11 14:21 ` Jeff King
2020-12-11 14:54 ` Patrick Steinhardt
2020-12-11 16:10 ` Jeff King
2020-12-09 16:10 ` Jeff King
2020-12-09 16:12 ` [PATCH 1/3] quote: make sq_dequote_step() a public function Jeff King
2020-12-09 16:17 ` [PATCH 2/3] config: parse more robust format in GIT_CONFIG_PARAMETERS Jeff King
2020-12-09 16:20 ` [PATCH 3/3] config: store "git -c" variables using more robust format Jeff King
2020-12-09 16:34 ` Jeff King
2020-12-10 20:55 ` Ævar Arnfjörð Bjarmason
2020-12-10 21:49 ` Junio C Hamano
2020-12-11 13:21 ` Jeff King
2020-12-10 0:00 ` [PATCH v4 2/6] config: add new way to pass config via `--config-env` Junio C Hamano
2020-12-10 0:09 ` Jeff King
2020-12-10 0:57 ` Junio C Hamano
2020-12-11 13:24 ` Patrick Steinhardt
2020-12-11 14:20 ` Jeff King
2020-12-09 11:52 ` [PATCH v4 3/6] environment: make `getenv_safe()` non-static Patrick Steinhardt
2020-12-09 11:52 ` [PATCH v4 4/6] config: extract function to parse config pairs Patrick Steinhardt
2020-12-09 13:12 ` Ævar Arnfjörð Bjarmason
2020-12-09 11:52 ` [PATCH v4 5/6] config: refactor parsing of GIT_CONFIG_PARAMETERS Patrick Steinhardt
2020-12-09 11:52 ` [PATCH v4 6/6] config: allow specifying config entries via envvar pairs Patrick Steinhardt
2020-12-09 15:29 ` [PATCH v4 0/6] config: allow specifying config entries via env Ævar Arnfjörð Bjarmason
2020-12-11 13:35 ` Patrick Steinhardt
2020-12-11 14:27 ` Jeff King
2020-12-11 14:42 ` Jeff King
2020-12-11 14:58 ` Patrick Steinhardt
2020-12-11 14:47 ` Patrick Steinhardt
2020-12-11 15:21 ` Ævar Arnfjörð Bjarmason
2020-12-11 16:02 ` Jeff King
2020-12-16 7:52 ` [PATCH v5 0/8] " Patrick Steinhardt
2020-12-16 7:52 ` [PATCH v5 1/8] git: add `--super-prefix` to usage string Patrick Steinhardt
2020-12-16 7:52 ` [PATCH v5 2/8] config: add new way to pass config via `--config-env` Patrick Steinhardt
2020-12-23 21:35 ` Junio C Hamano
2020-12-16 7:54 ` [PATCH v5 4/8] config: extract function to parse config pairs Patrick Steinhardt
2020-12-16 7:54 ` [PATCH v5 7/8] environment: make `getenv_safe()` a public function Patrick Steinhardt
2020-12-16 7:54 ` [PATCH v5 8/8] config: allow specifying config entries via envvar pairs Patrick Steinhardt
2020-12-23 21:14 ` Junio C Hamano
2020-12-23 21:55 ` Junio C Hamano
2021-01-06 10:28 ` Patrick Steinhardt
2021-01-06 21:07 ` Junio C Hamano
2020-12-16 7:56 ` [PATCH v5 3/8] quote: make sq_dequote_step() a public function Patrick Steinhardt
2020-12-16 7:56 ` [PATCH v5 5/8] config: store "git -c" variables using more robust format Patrick Steinhardt
2020-12-16 7:57 ` [PATCH v5 6/8] config: parse more robust format in GIT_CONFIG_PARAMETERS Patrick Steinhardt
2020-12-16 20:01 ` Phillip Wood
2021-01-07 6:36 ` [PATCH v6 0/8] config: allow specifying config entries via env Patrick Steinhardt
2021-01-07 6:36 ` [PATCH v6 1/8] git: add `--super-prefix` to usage string Patrick Steinhardt
2021-01-07 6:36 ` [PATCH v6 2/8] config: add new way to pass config via `--config-env` Patrick Steinhardt
2021-01-10 20:29 ` Simon Ruderich
2021-01-11 0:29 ` Junio C Hamano
2021-01-11 8:24 ` Patrick Steinhardt
2021-01-07 6:36 ` [PATCH v6 3/8] quote: make sq_dequote_step() a public function Patrick Steinhardt
2021-01-07 6:37 ` [PATCH v6 4/8] config: extract function to parse config pairs Patrick Steinhardt
2021-01-07 6:37 ` [PATCH v6 5/8] config: store "git -c" variables using more robust format Patrick Steinhardt
2021-01-07 6:37 ` [PATCH v6 6/8] config: parse more robust format in GIT_CONFIG_PARAMETERS Patrick Steinhardt
2021-01-07 6:37 ` [PATCH v6 7/8] environment: make `getenv_safe()` a public function Patrick Steinhardt
2021-01-07 6:37 ` [PATCH v6 8/8] config: allow specifying config entries via envvar pairs Patrick Steinhardt
2021-01-11 8:36 ` [PATCH v7 0/8] " Patrick Steinhardt
2021-01-11 8:36 ` [PATCH v7 1/8] git: add `--super-prefix` to usage string Patrick Steinhardt
2021-01-11 8:36 ` [PATCH v7 2/8] config: add new way to pass config via `--config-env` Patrick Steinhardt
2021-01-11 22:34 ` Junio C Hamano
2021-01-11 8:36 ` [PATCH v7 3/8] quote: make sq_dequote_step() a public function Patrick Steinhardt
2021-01-11 8:36 ` [PATCH v7 4/8] config: extract function to parse config pairs Patrick Steinhardt
2021-01-11 8:37 ` [PATCH v7 5/8] config: store "git -c" variables using more robust format Patrick Steinhardt
2021-01-11 8:37 ` [PATCH v7 6/8] config: parse more robust format in GIT_CONFIG_PARAMETERS Patrick Steinhardt
2021-01-11 8:37 ` [PATCH v7 7/8] environment: make `getenv_safe()` a public function Patrick Steinhardt
2021-01-11 8:37 ` [PATCH v7 8/8] config: allow specifying config entries via envvar pairs Patrick Steinhardt
2021-01-12 12:26 ` [PATCH v8 0/8] " Patrick Steinhardt
2021-01-12 12:26 ` [PATCH v8 1/8] git: add `--super-prefix` to usage string Patrick Steinhardt
2021-01-12 12:26 ` [PATCH v8 2/8] config: add new way to pass config via `--config-env` Patrick Steinhardt
2021-04-16 15:40 ` Ævar Arnfjörð Bjarmason
2021-04-17 8:38 ` Jeff King
2021-04-19 15:28 ` Patrick Steinhardt
2021-04-20 11:01 ` Ævar Arnfjörð Bjarmason
2021-04-20 10:59 ` Ævar Arnfjörð Bjarmason
2021-04-23 10:05 ` Jeff King
2021-05-19 11:36 ` Ævar Arnfjörð Bjarmason
2021-01-12 12:26 ` Patrick Steinhardt [this message]
2021-01-12 12:26 ` [PATCH v8 4/8] config: extract function to parse config pairs Patrick Steinhardt
2021-01-12 12:27 ` [PATCH v8 5/8] config: store "git -c" variables using more robust format Patrick Steinhardt
2021-01-15 19:16 ` Jeff King
2021-01-20 6:29 ` Patrick Steinhardt
2021-01-20 6:55 ` Junio C Hamano
2021-01-20 7:42 ` Patrick Steinhardt
2021-01-20 22:28 ` Junio C Hamano
2021-01-12 12:27 ` [PATCH v8 6/8] config: parse more robust format in GIT_CONFIG_PARAMETERS Patrick Steinhardt
2021-01-12 12:27 ` [PATCH v8 7/8] environment: make `getenv_safe()` a public function Patrick Steinhardt
2021-01-12 12:27 ` [PATCH v8 8/8] config: allow specifying config entries via envvar pairs Patrick Steinhardt
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