basestring_vsnprintf.c
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:2k
源码类别:
MySQL数据库
开发平台:
Visual C++
- /* Copyright (C) 2003 MySQL AB
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- #ifdef __sgi
- /* define on IRIX to get posix compliant vsnprintf */
- #define _XOPEN_SOURCE 500
- #endif
- #include <stdio.h>
- #include <basestring_vsnprintf.h>
- #include <my_config.h>
- #ifdef _WINDOWS
- #define SNPRINTF_RETURN_TRUNC
- #define snprintf _snprintf
- #define vsnprintf _vsnprintf
- #endif
- int
- basestring_snprintf(char *str, size_t size, const char *format, ...)
- {
- int ret;
- va_list ap;
- va_start(ap, format);
- ret= basestring_vsnprintf(str, size, format, ap);
- va_end(ap);
- return(ret);
- }
- #ifdef SNPRINTF_RETURN_TRUNC
- static char basestring_vsnprintf_buf[16*1024];
- #endif
- int
- basestring_vsnprintf(char *str, size_t size, const char *format, va_list ap)
- {
- if (size == 0)
- {
- #ifdef SNPRINTF_RETURN_TRUNC
- return vsnprintf(basestring_vsnprintf_buf,
- sizeof(basestring_vsnprintf_buf),
- format, ap);
- #else
- char buf[1];
- return vsnprintf(buf, 1, format, ap);
- #endif
- }
- {
- int ret= vsnprintf(str, size, format, ap);
- #ifdef SNPRINTF_RETURN_TRUNC
- if (ret == size-1 || ret == -1)
- {
- ret= vsnprintf(basestring_vsnprintf_buf,
- sizeof(basestring_vsnprintf_buf),
- format, ap);
- }
- #endif
- return ret;
- }
- }