/* * linux/lib/string.c * * Copyright (C) 1991, 1992 Linus Torvalds */ #include #include #include #ifndef __HAVE_ARCH_STRNICMP /** * strnicmp - Case insensitive, length-limited string comparison * @s1: One string * @s2: The other string * @len: the maximum number of characters to compare */ int strnicmp(const char *s1, const char *s2, size_t len) { /* Yes, Virginia, it had better be unsigned */ unsigned char c1, c2; c1 = 0; c2 = 0; if (len) { do { c1 = *s1; c2 = *s2; s1++; s2++; if (!c1) break; if (!c2) break; if (c1 == c2) continue; c1 = tolower(c1); c2 = tolower(c2); if (c1 != c2) break; } while (--len); } return (int)c1 - (int)c2; } #endif #ifndef __HAVE_ARCH_STRCPY /** * strcpy - Copy a %NUL terminated string * @dest: Where to copy the string to * @src: Where to copy the string from */ char * strcpy(char * dest,const char *src) { char *tmp = dest; while ((*dest++ = *src++) != '\0') /* nothing */; return tmp; } #endif #ifndef __HAVE_ARCH_STRNCPY /** * strncpy - Copy a length-limited, %NUL-terminated string * @dest: Where to copy the string to * @src: Where to copy the string from * @count: The maximum number of bytes to copy * * Note that unlike userspace strncpy, this does not %NUL-pad the buffer. * However, the result is not %NUL-terminated if the source exceeds * @count bytes. */ char * strncpy(char * dest,const char *src,size_t count) { char *tmp = dest; while (count-- && (*dest++ = *src++) != '\0') /* nothing */; return tmp; } #endif #ifndef __HAVE_ARCH_STRLCPY /** * strlcpy - Copy a %NUL terminated string into a sized buffer * @dest: Where to copy the string to * @src: Where to copy the string from * @size: size of destination buffer * * Compatible with *BSD: the result is always a valid * NUL-terminated string that fits in the buffer (unless, * of course, the buffer size is zero). It does not pad * out the result like strncpy() does. */ size_t strlcpy(char *dest, const char *src, size_t size) { size_t ret = strlen(src); if (size) { size_t len = (ret >= size) ? size-1 : ret; memcpy(dest, src, len); dest[len] = '\0'; } return ret; } EXPORT_SYMBOL(strlcpy); #endif #ifndef __HAVE_ARCH_STRCAT /** * strcat - Append one %NUL-terminated string to another * @dest: The string to be appended to * @src: The string to append to it */ char * strcat(char * dest, const char * src) { char *tmp = dest; while (*dest) dest++; while ((*dest++ = *src++) != '\0') ; return tmp; } #endif #ifndef __HAVE_ARCH_STRNCAT /** * strncat - Append a length-limited, %NUL-terminated string to another * @dest: The string to be appended to * @src: The string to append to it * @count: The maximum numbers of bytes to copy * * Note that in contrast to strncpy, strncat ensures the result is * terminated. */ char * strncat(char *dest, const char *src, size_t count) { char *tmp = dest; if (count) { while (*dest) dest++; while ((*dest++ = *src++)) { if (--count == 0) { *dest = '\0'; break; } } } return tmp; } #endif #ifndef __HAVE_ARCH_STRCMP /** * strcmp - Compare two strings * @cs: One string * @ct: Another string */ int strcmp(const char * cs,const char * ct) { register signed char __res; while (1) { if ((__res = *cs - *ct++) != 0 || !*cs++) break; } return __res; } #endif #ifndef __HAVE_ARCH_STRNCMP /** * strncmp - Compare two length-limited strings * @cs: One string * @ct: Another string * @count: The maximum number of bytes to compare */ int strncmp(const char * cs,const char * ct,size_t count) { register signed char __res = 0; while (count) { if ((__res = *cs - *ct++) != 0 || !*cs++) break; count--; } return __res; } #endif #ifndef __HAVE_ARCH_STRCHR /** * strchr - Find the first occurrence of a character in a string * @s: The string to be searched * @c: The character to search for */ char * strchr(const char * s, int c) { for(; *s != (char) c; ++s) if (*s == '\0') return NULL; return (char *) s; } #endif #ifndef __HAVE_ARCH_STRRCHR /** * strrchr - Find the last occurrence of a character in a string * @s: The string to be searched * @c: The character to search for */ char * strrchr(const char * s, int c) { 
#!/usr/bin/env bash
[ -n "$1" -a -n "$2" ] || {
	echo "Usage: $0 <file> <directory>"
	exit 1
}
[ -f "$1" -a -d "$2" ] || {
	echo "File/directory not found"
	exit 1
}
cat "$1" | (
	cd "$2"
	while read entry; do
		[ -n "$entry" ] || break
		[ -f "$entry" ] && rm -f $entry
	done
)
cat "$1" | (
	cd "$2"
	while read entry; do
		[ -n "$entry" ] || break
		[ -d "$entry" ] && rmdir "$entry" > /dev/null 2>&1
	done
)
true
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