74 lines
2 KiB
C
74 lines
2 KiB
C
/* Utility to pick a temporary filename prefix.
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Copyright (C) 1996-2022 Free Software Foundation, Inc.
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This file is part of the libiberty library.
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Libiberty is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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Libiberty is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with libiberty; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdio.h> /* May get P_tmpdir. */
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#include <sys/types.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#include "libiberty.h"
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/* Name of temporary file.
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mktemp requires 6 trailing X's. */
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#define TEMP_FILE "ccXXXXXX"
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#define TEMP_FILE_LEN (sizeof(TEMP_FILE) - 1)
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/*
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@deftypefn Extension char* choose_temp_base (void)
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Return a prefix for temporary file names or @code{NULL} if unable to
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find one. The current directory is chosen if all else fails so the
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program is exited if a temporary directory can't be found (@code{mktemp}
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fails). The buffer for the result is obtained with @code{xmalloc}.
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This function is provided for backwards compatibility only. Its use is
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not recommended.
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@end deftypefn
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*/
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char *
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choose_temp_base (void)
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{
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const char *base = choose_tmpdir ();
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char *temp_filename;
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int len;
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len = strlen (base);
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temp_filename = XNEWVEC (char, len + TEMP_FILE_LEN + 1);
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strcpy (temp_filename, base);
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strcpy (temp_filename + len, TEMP_FILE);
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if (mktemp (temp_filename) == 0)
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abort ();
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return temp_filename;
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}
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