105436638acc7c010349a69c3395f1a57c642dc62Ying Wang/* Formatted output to a stream. 205436638acc7c010349a69c3395f1a57c642dc62Ying Wang Copyright (C) 2004, 2006-2012 Free Software Foundation, Inc. 305436638acc7c010349a69c3395f1a57c642dc62Ying Wang 405436638acc7c010349a69c3395f1a57c642dc62Ying Wang This program is free software: you can redistribute it and/or modify 505436638acc7c010349a69c3395f1a57c642dc62Ying Wang it under the terms of the GNU General Public License as published by 605436638acc7c010349a69c3395f1a57c642dc62Ying Wang the Free Software Foundation; either version 3 of the License, or 705436638acc7c010349a69c3395f1a57c642dc62Ying Wang (at your option) any later version. 805436638acc7c010349a69c3395f1a57c642dc62Ying Wang 905436638acc7c010349a69c3395f1a57c642dc62Ying Wang This program is distributed in the hope that it will be useful, 1005436638acc7c010349a69c3395f1a57c642dc62Ying Wang but WITHOUT ANY WARRANTY; without even the implied warranty of 1105436638acc7c010349a69c3395f1a57c642dc62Ying Wang MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1205436638acc7c010349a69c3395f1a57c642dc62Ying Wang GNU General Public License for more details. 1305436638acc7c010349a69c3395f1a57c642dc62Ying Wang 1405436638acc7c010349a69c3395f1a57c642dc62Ying Wang You should have received a copy of the GNU General Public License 1505436638acc7c010349a69c3395f1a57c642dc62Ying Wang along with this program. If not, see <http://www.gnu.org/licenses/>. */ 1605436638acc7c010349a69c3395f1a57c642dc62Ying Wang 1705436638acc7c010349a69c3395f1a57c642dc62Ying Wang#if 1 1805436638acc7c010349a69c3395f1a57c642dc62Ying Wang# include <config.h> 1905436638acc7c010349a69c3395f1a57c642dc62Ying Wang#endif 2005436638acc7c010349a69c3395f1a57c642dc62Ying Wang 2105436638acc7c010349a69c3395f1a57c642dc62Ying Wang/* Specification. */ 2205436638acc7c010349a69c3395f1a57c642dc62Ying Wang#include <stdio.h> 2305436638acc7c010349a69c3395f1a57c642dc62Ying Wang 2405436638acc7c010349a69c3395f1a57c642dc62Ying Wang#include <errno.h> 2505436638acc7c010349a69c3395f1a57c642dc62Ying Wang#include <limits.h> 2605436638acc7c010349a69c3395f1a57c642dc62Ying Wang#include <stdarg.h> 2705436638acc7c010349a69c3395f1a57c642dc62Ying Wang#include <stdlib.h> 2805436638acc7c010349a69c3395f1a57c642dc62Ying Wang 2905436638acc7c010349a69c3395f1a57c642dc62Ying Wang#include "fseterr.h" 3005436638acc7c010349a69c3395f1a57c642dc62Ying Wang#include "vasnprintf.h" 3105436638acc7c010349a69c3395f1a57c642dc62Ying Wang 3205436638acc7c010349a69c3395f1a57c642dc62Ying Wang/* Print formatted output to the stream FP. 3305436638acc7c010349a69c3395f1a57c642dc62Ying Wang Return string length of formatted string. On error, return a negative 3405436638acc7c010349a69c3395f1a57c642dc62Ying Wang value. */ 3505436638acc7c010349a69c3395f1a57c642dc62Ying Wangint 3605436638acc7c010349a69c3395f1a57c642dc62Ying Wangfprintf (FILE *fp, const char *format, ...) 3705436638acc7c010349a69c3395f1a57c642dc62Ying Wang{ 3805436638acc7c010349a69c3395f1a57c642dc62Ying Wang char buf[2000]; 3905436638acc7c010349a69c3395f1a57c642dc62Ying Wang char *output; 4005436638acc7c010349a69c3395f1a57c642dc62Ying Wang size_t len; 4105436638acc7c010349a69c3395f1a57c642dc62Ying Wang size_t lenbuf = sizeof (buf); 4205436638acc7c010349a69c3395f1a57c642dc62Ying Wang va_list args; 4305436638acc7c010349a69c3395f1a57c642dc62Ying Wang 4405436638acc7c010349a69c3395f1a57c642dc62Ying Wang va_start (args, format); 4505436638acc7c010349a69c3395f1a57c642dc62Ying Wang output = vasnprintf (buf, &lenbuf, format, args); 4605436638acc7c010349a69c3395f1a57c642dc62Ying Wang len = lenbuf; 4705436638acc7c010349a69c3395f1a57c642dc62Ying Wang va_end (args); 4805436638acc7c010349a69c3395f1a57c642dc62Ying Wang 4905436638acc7c010349a69c3395f1a57c642dc62Ying Wang if (!output) 5005436638acc7c010349a69c3395f1a57c642dc62Ying Wang { 5105436638acc7c010349a69c3395f1a57c642dc62Ying Wang fseterr (fp); 5205436638acc7c010349a69c3395f1a57c642dc62Ying Wang return -1; 5305436638acc7c010349a69c3395f1a57c642dc62Ying Wang } 5405436638acc7c010349a69c3395f1a57c642dc62Ying Wang 5505436638acc7c010349a69c3395f1a57c642dc62Ying Wang if (fwrite (output, 1, len, fp) < len) 5605436638acc7c010349a69c3395f1a57c642dc62Ying Wang { 5705436638acc7c010349a69c3395f1a57c642dc62Ying Wang if (output != buf) 5805436638acc7c010349a69c3395f1a57c642dc62Ying Wang { 5905436638acc7c010349a69c3395f1a57c642dc62Ying Wang int saved_errno = errno; 6005436638acc7c010349a69c3395f1a57c642dc62Ying Wang free (output); 6105436638acc7c010349a69c3395f1a57c642dc62Ying Wang errno = saved_errno; 6205436638acc7c010349a69c3395f1a57c642dc62Ying Wang } 6305436638acc7c010349a69c3395f1a57c642dc62Ying Wang return -1; 6405436638acc7c010349a69c3395f1a57c642dc62Ying Wang } 6505436638acc7c010349a69c3395f1a57c642dc62Ying Wang 6605436638acc7c010349a69c3395f1a57c642dc62Ying Wang if (output != buf) 6705436638acc7c010349a69c3395f1a57c642dc62Ying Wang free (output); 6805436638acc7c010349a69c3395f1a57c642dc62Ying Wang 6905436638acc7c010349a69c3395f1a57c642dc62Ying Wang if (len > INT_MAX) 7005436638acc7c010349a69c3395f1a57c642dc62Ying Wang { 7105436638acc7c010349a69c3395f1a57c642dc62Ying Wang errno = EOVERFLOW; 7205436638acc7c010349a69c3395f1a57c642dc62Ying Wang fseterr (fp); 7305436638acc7c010349a69c3395f1a57c642dc62Ying Wang return -1; 7405436638acc7c010349a69c3395f1a57c642dc62Ying Wang } 7505436638acc7c010349a69c3395f1a57c642dc62Ying Wang 7605436638acc7c010349a69c3395f1a57c642dc62Ying Wang return len; 7705436638acc7c010349a69c3395f1a57c642dc62Ying Wang} 78