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/* |
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* linux/lib/string.c |
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* |
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* Copyright (C) 1991, 1992 Linus Torvalds |
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*/ |
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/* |
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* stupid library routines.. The optimized versions should generally be found |
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* as inline code in |
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* |
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* These are buggy as well.. |
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* |
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* * Fri Jun 25 1999, Ingo Oeser |
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* - Added strsep() which will replace strtok() soon (because strsep() is |
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* reentrant and should be faster). Use only strsep() in new code, please. |
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* |
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* * Sat Feb 09 2002, Jason Thomas , |
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* Matthew Hawkins |
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* - Kissed strtok() goodbye |
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*/ |
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#include |
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#include |
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#include |
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#include |
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#include |
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#include |
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#include |
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#ifndef __HAVE_ARCH_STRLCPY |
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/** |
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* strlcpy - Copy a C-string into a sized buffer |
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* @dest: Where to copy the string to |
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* @src: Where to copy the string from |
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* @size: size of destination buffer |
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* |
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* Compatible with *BSD: the result is always a valid |
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* NUL-terminated string that fits in the buffer (unless, |
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* of course, the buffer size is zero). It does not pad |
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* out the result like strncpy() does. |
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*/ |
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size_t strlcpy(char *dest, const char *src, size_t size) |
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{ |
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size_t ret = strlen(src); |
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if (size) { |
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size_t len = (ret >= size) ? size - 1 : ret; |
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memcpy(dest, src, len); |
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dest[len] = '\0'; |
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} |
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return ret; |
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} |
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#ifndef __HAVE_ARCH_STRLCAT |
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/** |
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* strlcat - Append a length-limited, C-string to another |
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* @dest: The string to be appended to |
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* @src: The string to append to it |
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* @count: The size of the destination buffer. |
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*/ |
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size_t strlcat(char *dest, const char *src, size_t count) |
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{ |
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size_t dsize = strlen(dest); |
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size_t len = strlen(src); |
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size_t res = dsize + len; |
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/* This would be a bug */ |
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BUG_ON(dsize >= count); |
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dest += dsize; |
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count -= dsize; |
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if (len >= count) |
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len = count-1; |
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memcpy(dest, src, len); |
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dest[len] = 0; |
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return res; |
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} |
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#endif |
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#endif |
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