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util: add git__ishex

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git__ishex allows to check if a string is a hexadecimal representation.

Signed-off-by: schu <schu-github@schulog.org>
This commit is contained in:
schu 2012-02-14 20:44:22 +01:00
parent b4b79ac3db
commit 905919e63b
1 changed files with 9 additions and 0 deletions
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9
src/util.h
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@ -169,4 +169,13 @@ GIT_INLINE(int) git__fromhex(char h)
return from_hex[(unsigned char) h];
}
GIT_INLINE(int) git__ishex(const char *str)
{
unsigned i;
for (i=0; i<strlen(str); i++)
if (git__fromhex(str[i]) < 0)
return 0;
return 1;
}
#endif /* INCLUDE_util_h__ */