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strl.cpp
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86 lines (64 loc) · 1.71 KB
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// https://gist.github.com/Fonger/98cc95ac39fbe1a7e4d9
#ifndef HAVE_STRLCAT
/*
'_cups_strlcat()' - Safely concatenate two strings.
*/
size_t /* O - Length of string */
strlcat(char *dst, /* O - Destination string */
const char *src, /* I - Source string */
size_t size) /* I - Size of destination string buffer */
{
size_t srclen; /* Length of source string */
size_t dstlen; /* Length of destination string */
/*
Figure out how much room is left...
*/
dstlen = strlen(dst);
size -= dstlen + 1;
if (!size)
{
return (dstlen); /* No room, return immediately... */
}
/*
Figure out how much room is needed...
*/
srclen = strlen(src);
/*
Copy the appropriate amount...
*/
if (srclen > size)
{
srclen = size;
}
memcpy(dst + dstlen, src, srclen);
dst[dstlen + srclen] = '\0';
return (dstlen + srclen);
}
#endif /* !HAVE_STRLCAT */
#ifndef HAVE_STRLCPY
/*
'_cups_strlcpy()' - Safely copy two strings.
*/
size_t /* O - Length of string */
strlcpy(char *dst, /* O - Destination string */
const char *src, /* I - Source string */
size_t size) /* I - Size of destination string buffer */
{
size_t srclen; /* Length of source string */
/*
Figure out how much room is needed...
*/
size --;
srclen = strlen(src);
/*
Copy the appropriate amount...
*/
if (srclen > size)
{
srclen = size;
}
memcpy(dst, src, srclen);
dst[srclen] = '\0';
return (srclen);
}
#endif /* !HAVE_STRLCPY */