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116 lines
3.2 KiB
116 lines
3.2 KiB
/* libSoX internal functions that apply to both formats and effects
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* All public functions & data are prefixed with lsx_ .
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*
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* Copyright (c) 2008 robs@users.sourceforge.net
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*
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* This library is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or (at
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* your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
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* General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "sox_i.h"
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#ifdef HAVE_IO_H
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#include <io.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#if defined(_MSC_VER) || defined(__MINGW32__)
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#define MKTEMP_X _O_BINARY|_O_TEMPORARY
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#else
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#define MKTEMP_X 0
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#endif
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#ifndef HAVE_MKSTEMP
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#define mkstemp(t) open(mktemp(t), MKTEMP_X|O_RDWR|O_TRUNC|O_CREAT, S_IREAD|S_IWRITE)
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#define FAKE_MKSTEMP "fake "
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#else
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#define FAKE_MKSTEMP
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#endif
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#ifdef WIN32
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static int check_dir(char * buf, size_t buflen, char const * name)
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{
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struct stat st;
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if (!name || stat(name, &st) || (st.st_mode & S_IFMT) != S_IFDIR)
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{
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return 0;
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}
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else
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{
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strncpy(buf, name, buflen);
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buf[buflen - 1] = 0;
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return strlen(name) == strlen(buf);
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}
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}
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#endif
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FILE * lsx_tmpfile(void)
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{
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char const * path = sox_globals.tmp_path;
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/*
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On Win32, tmpfile() is broken - it creates the file in the root directory of
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the current drive (the user probably doesn't have permission to write there!)
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instead of in a valid temporary directory (like TEMP or TMP). So if tmp_path
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is null, figure out a reasonable default.
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To force use of tmpfile(), set sox_globals.tmp_path = "".
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*/
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#ifdef WIN32
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if (!path)
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{
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static char default_path[260] = "";
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if (default_path[0] == 0
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&& !check_dir(default_path, sizeof(default_path), getenv("TEMP"))
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&& !check_dir(default_path, sizeof(default_path), getenv("TMP"))
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#ifdef __CYGWIN__
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&& !check_dir(default_path, sizeof(default_path), "/tmp")
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#endif
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)
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{
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strcpy(default_path, ".");
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}
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path = default_path;
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}
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#endif
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if (path && path[0]) {
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/* Emulate tmpfile (delete on close); tmp dir is given tmp_path: */
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char const * const end = "/libSoX.tmp.XXXXXX";
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char * name = lsx_malloc(strlen(path) + strlen(end) + 1);
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int fildes;
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strcpy(name, path);
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strcat(name, end);
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fildes = mkstemp(name);
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#ifdef HAVE_UNISTD_H
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lsx_debug(FAKE_MKSTEMP "mkstemp, name=%s (unlinked)", name);
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unlink(name);
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#else
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lsx_debug(FAKE_MKSTEMP "mkstemp, name=%s (O_TEMPORARY)", name);
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#endif
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free(name);
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return fildes == -1? NULL : fdopen(fildes, "w+b");
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}
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/* Use standard tmpfile (delete on close); tmp dir is undefined: */
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lsx_debug("tmpfile()");
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return tmpfile();
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}
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