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quote: make sq_dequote_step() a public function

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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>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King
2021-01-12 13:26:49 +01:00
committed by Junio C Hamano
parent ce81b1da23
commit 13c44953fb
2 changed files with 26 additions and 7 deletions
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15
quote.c
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@@ -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;