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| /************************************************************************** |
| * |
| * Copyright 2008 VMware, Inc. |
| * 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 VMWARE 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 <jfonseca@vmware.com> |
| */ |
| |
| #ifndef U_STRING_H_ |
| #define U_STRING_H_ |
| |
| #if !defined(_MSC_VER) && !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 _GNU_SOURCE |
| |
| #define util_strchrnul strchrnul |
| |
| #else |
| |
| static INLINE char * |
| util_strchrnul(const char *s, char c) |
| { |
| for (; *s && *s != c; ++s); |
| |
| return (char *)s; |
| } |
| |
| #endif |
| |
| #ifdef _MSC_VER |
| |
| 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) |
| { |
| char *p = util_strchrnul(s, c); |
| |
| return *p ? p : 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; |
| size_t 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_ */ |