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strbuf: add a case insensitive starts_with()

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Check in a case insensitive manner if one string is a prefix of another
string.

This function is used in a subsequent commit.

Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Lars Schneider 2018-03-09 18:35:29 +01:00 committed by Junio C Hamano
parent 13ecb4638e
commit 66b8af3e12
2 changed files with 10 additions and 0 deletions

1
git-compat-util.h
View File

@ -455,6 +455,7 @@ extern void (*get_warn_routine(void))(const char *warn, va_list params);
extern void set_die_is_recursing_routine(int (*routine)(void));
extern int starts_with(const char *str, const char *prefix);
extern int istarts_with(const char *str, const char *prefix);
/*
* If the string "str" begins with the string found in "prefix", return 1.

9
strbuf.c
View File

@ -11,6 +11,15 @@ int starts_with(const char *str, const char *prefix)
return 0;
}
int istarts_with(const char *str, const char *prefix)
{
for (; ; str++, prefix++)
if (!*prefix)
return 1;
else if (tolower(*str) != tolower(*prefix))
return 0;
}
int skip_to_optional_arg_default(const char *str, const char *prefix,
const char **arg, const char *def)
{