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Diffstat (limited to 'src/gallium/auxiliary/util/u_string.h')
| -rw-r--r-- | src/gallium/auxiliary/util/u_string.h | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_string.h b/src/gallium/auxiliary/util/u_string.h new file mode 100644 index 00000000000..08c89bbf770 --- /dev/null +++ b/src/gallium/auxiliary/util/u_string.h @@ -0,0 +1,220 @@ +/************************************************************************** + * + * 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 <[email protected]> + */ + +#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_ */ |