/************************************************************************** * * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * **************************************************************************/ /** * @file * Platform independent functions for string manipulation. * * @author Jose Fonseca <jrfonseca@tungstengraphics.com> */ #ifndef U_STRING_H_ #define U_STRING_H_ #if !defined(WIN32) && !defined(XF86_LIBC_H) #include <stdio.h> #endif #include <stddef.h> #include <stdarg.h> #include "pipe/p_compiler.h" #ifdef __cplusplus extern "C" { #endif #ifdef WIN32 int util_vsnprintf(char *, size_t, const char *, va_list); int util_snprintf(char *str, size_t size, const char *format, ...); static INLINE void util_vsprintf(char *str, const char *format, va_list ap) { util_vsnprintf(str, (size_t)-1, format, ap); } static INLINE void util_sprintf(char *str, const char *format, ...) { va_list ap; va_start(ap, format); util_vsnprintf(str, (size_t)-1, format, ap); va_end(ap); } static INLINE char * util_strchr(const char *s, char c) { while(*s) { if(*s == c) return (char *)s; ++s; } return NULL; } static INLINE char* util_strncat(char *dst, const char *src, size_t n) { char *p = dst + strlen(dst); const char *q = src; size_t i; for (i = 0; i < n && *q != '\0'; ++i) *p++ = *q++; *p = '\0'; return dst; } static INLINE int util_strcmp(const char *s1, const char *s2) { unsigned char u1, u2; while (1) { u1 = (unsigned char) *s1++; u2 = (unsigned char) *s2++; if (u1 != u2) return u1 - u2; if (u1 == '\0') return 0; } return 0; } static INLINE int util_strncmp(const char *s1, const char *s2, size_t n) { unsigned char u1, u2; while (n-- > 0) { u1 = (unsigned char) *s1++; u2 = (unsigned char) *s2++; if (u1 != u2) return u1 - u2; if (u1 == '\0') return 0; } return 0; } static INLINE char * util_strstr(const char *haystack, const char *needle) { const char *p = haystack; int len = strlen(needle); for (; (p = util_strchr(p, *needle)) != 0; p++) { if (util_strncmp(p, needle, len) == 0) { return (char *)p; } } return NULL; } static INLINE void * util_memmove(void *dest, const void *src, size_t n) { char *p = (char *)dest; const char *q = (const char *)src; if (dest < src) { while (n--) *p++ = *q++; } else { p += n; q += n; while (n--) *--p = *--q; } return dest; } #else #define util_vsnprintf vsnprintf #define util_snprintf snprintf #define util_vsprintf vsprintf #define util_sprintf sprintf #define util_strchr strchr #define util_strcmp strcmp #define util_strncmp strncmp #define util_strncat strncat #define util_strstr strstr #define util_memmove memmove #endif /** * Printable string buffer */ struct util_strbuf { char *str; char *ptr; size_t left; }; static INLINE void util_strbuf_init(struct util_strbuf *sbuf, char *str, size_t size) { sbuf->str = str; sbuf->str[0] = 0; sbuf->ptr = sbuf->str; sbuf->left = size; } static INLINE void util_strbuf_printf(struct util_strbuf *sbuf, const char *format, ...) { if(sbuf->left > 1) { size_t written; va_list ap; va_start(ap, format); written = util_vsnprintf(sbuf->ptr, sbuf->left, format, ap); va_end(ap); sbuf->ptr += written; sbuf->left -= written; } } #ifdef __cplusplus } #endif #endif /* U_STRING_H_ */