1 /* Utility to pick a temporary filename prefix. 2 Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc. 3 4 This file is part of the libiberty library. 5 Libiberty is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Library General Public 7 License as published by the Free Software Foundation; either 8 version 2 of the License, or (at your option) any later version. 9 10 Libiberty is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Library General Public License for more details. 14 15 You should have received a copy of the GNU Library General Public 16 License along with libiberty; see the file COPYING.LIB. If not, 17 write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, 18 Boston, MA 02110-1301, USA. */ 19 20 #ifdef HAVE_CONFIG_H 21 #include "config.h" 22 #endif 23 24 #include <stdio.h> /* May get P_tmpdir. */ 25 #ifdef HAVE_STDLIB_H 26 #include <stdlib.h> 27 #endif 28 #ifdef HAVE_STRING_H 29 #include <string.h> 30 #endif 31 32 #include "libiberty.h" 33 extern char *choose_tmpdir (void); 34 35 /* Name of temporary file. 36 mktemp requires 6 trailing X's. */ 37 #define TEMP_FILE "ccXXXXXX" 38 #define TEMP_FILE_LEN (sizeof(TEMP_FILE) - 1) 39 40 /* 41 42 @deftypefn Extension char* choose_temp_base (void) 43 44 Return a prefix for temporary file names or @code{NULL} if unable to 45 find one. The current directory is chosen if all else fails so the 46 program is exited if a temporary directory can't be found (@code{mktemp} 47 fails). The buffer for the result is obtained with @code{xmalloc}. 48 49 This function is provided for backwards compatibility only. Its use is 50 not recommended. 51 52 @end deftypefn 53 54 */ 55 56 char * 57 choose_temp_base (void) 58 { 59 const char *base = choose_tmpdir (); 60 char *temp_filename; 61 int len; 62 63 len = strlen (base); 64 temp_filename = XNEWVEC (char, len + TEMP_FILE_LEN + 1); 65 strcpy (temp_filename, base); 66 strcpy (temp_filename + len, TEMP_FILE); 67 68 if (mktemp (temp_filename) == 0) 69 abort (); 70 return temp_filename; 71 } 72