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annotate libmlk-util/mlk/util/fmemopen.c @ 571:cba66f7d8a53

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misc: various windows fixes
author David Demelier <markand@malikania.fr>
date Thu, 09 Mar 2023 22:33:46 +0100
parents ecb158cbdd67
children 64150963f567
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1 /*
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2 * fmemopen.h -- fmemopen polyfill
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3 *
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4 * Copyright (c) 2020-2023 David Demelier <markand@malikania.fr>
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5 *
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6 * Permission to use, copy, modify, and/or distribute this software for any
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7 * purpose with or without fee is hereby granted, provided that the above
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8 * copyright notice and this permission notice appear in all copies.
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9 *
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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17 */
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18
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19 #include "sysconfig.h"
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20
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21 #include <stdio.h>
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22
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23 #if !defined(MLK_HAVE_FMEMOPEN)
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24
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25 #if defined(_WIN32)
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26
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27 #include <sys/stat.h>
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28 #include <sys/types.h>
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29 #include <fcntl.h>
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30 #include <io.h>
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31 #include <share.h>
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32 #include <stdio.h>
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33 #include <string.h>
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34 #include <windows.h>
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35
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36 FILE *
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37 mlk_util_fmemopen(void *buf, size_t size, const char *mode)
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38 {
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39 char temppath[MAX_PATH + 1], filename[MAX_PATH + 1];
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40 FILE *fp;
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41 int fd, flags;
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42
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43 flags = _O_CREAT |
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44 _O_SHORT_LIVED |
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45 _O_TEMPORARY |
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46 _O_RDWR |
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47 _O_NOINHERIT;
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48
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49 if (strchr(mode, 'b'))
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50 flags |= _O_BINARY;
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51
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52 if (!GetTempPathA(sizeof (temppath), temppath))
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53 return NULL;
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54 if (!GetTempFileNameA(temppath, "MLK", 0, filename))
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55 return NULL;
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56 if (_sopen_s(&fd, filename, flags, _SH_DENYRW, _S_IREAD | _S_IWRITE) < 0)
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57 return NULL;
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58 if (!(fp = _fdopen(fd, mode))) {
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59 _close(fd);
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60 return NULL;
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61 }
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62
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63 fwrite(buf, size, 1, fp);
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64 rewind(fp);
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65
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66 return fp;
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67 }
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68
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69 #else
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71 FILE *
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72 mlk_util_fmemopen(void *buf, size_t len, const char *type)
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73 {
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74 (void)buf;
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75 (void)len;
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76 (void)type;
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77
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78 /* Unsupported platform. */
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79 return NULL;
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80 }
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81
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82 #endif
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83
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84 #else
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85
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86 FILE *
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87 mlk_util_fmemopen(void *buf, size_t len, const char *type)
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88 {
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89 return fmemopen(buf, len, type);
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90 }
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91
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92 #endif