Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/src/tool_filetime.c @ 40:aa33339d6b8a upstream

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ADD: MuPDF v1.26.10: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.5.
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 11:31:38 +0200
parents b50eed0cc0ef
children
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1 /***************************************************************************
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2 * _ _ ____ _
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3 * Project ___| | | | _ \| |
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4 * / __| | | | |_) | |
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5 * | (__| |_| | _ <| |___
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6 * \___|\___/|_| \_\_____|
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7 *
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8 * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 *
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10 * This software is licensed as described in the file COPYING, which
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11 * you should have received as part of this distribution. The terms
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12 * are also available at https://curl.haxx.se/docs/copyright.html.
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13 *
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14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 * copies of the Software, and permit persons to whom the Software is
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16 * furnished to do so, under the terms of the COPYING file.
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17 *
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18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 * KIND, either express or implied.
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20 *
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21 ***************************************************************************/
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22 #include "tool_filetime.h"
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23
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24 #ifdef HAVE_UTIME_H
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25 # include <utime.h>
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26 #elif defined(HAVE_SYS_UTIME_H)
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27 # include <sys/utime.h>
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28 #endif
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29
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30 curl_off_t getfiletime(const char *filename, FILE *error_stream)
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31 {
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32 curl_off_t result = -1;
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33
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34 /* Windows stat() may attempt to adjust the unix GMT file time by a daylight
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35 saving time offset and since it's GMT that is bad behavior. When we have
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36 access to a 64-bit type we can bypass stat and get the times directly. */
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37 #if defined(WIN32) && (SIZEOF_CURL_OFF_T >= 8)
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38 HANDLE hfile;
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39
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40 hfile = CreateFileA(filename, FILE_READ_ATTRIBUTES,
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41 (FILE_SHARE_READ | FILE_SHARE_WRITE |
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42 FILE_SHARE_DELETE),
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43 NULL, OPEN_EXISTING, 0, NULL);
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44 if(hfile != INVALID_HANDLE_VALUE) {
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45 FILETIME ft;
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46 if(GetFileTime(hfile, NULL, NULL, &ft)) {
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47 curl_off_t converted = (curl_off_t)ft.dwLowDateTime
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48 | ((curl_off_t)ft.dwHighDateTime) << 32;
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49
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50 if(converted < CURL_OFF_T_C(116444736000000000)) {
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51 fprintf(error_stream,
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52 "Failed to get filetime: underflow\n");
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53 }
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54 else {
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55 result = (converted - CURL_OFF_T_C(116444736000000000)) / 10000000;
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56 }
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57 }
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58 else {
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59 fprintf(error_stream,
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60 "Failed to get filetime: "
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61 "GetFileTime failed: GetLastError %u\n",
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62 (unsigned int)GetLastError());
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63 }
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64 CloseHandle(hfile);
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65 }
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66 else if(GetLastError() != ERROR_FILE_NOT_FOUND) {
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67 fprintf(error_stream,
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68 "Failed to get filetime: "
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69 "CreateFile failed: GetLastError %u\n",
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70 (unsigned int)GetLastError());
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71 }
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72 #else
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73 struct_stat statbuf;
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74 if(-1 != stat(filename, &statbuf)) {
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75 result = (curl_off_t)statbuf.st_mtime;
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76 }
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77 else if(errno != ENOENT) {
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78 fprintf(error_stream,
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79 "Failed to get filetime: %s\n", strerror(errno));
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80 }
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81 #endif
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82 return result;
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83 }
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84
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85 #if defined(HAVE_UTIME) || defined(HAVE_UTIMES) || \
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86 (defined(WIN32) && (SIZEOF_CURL_OFF_T >= 8))
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87 void setfiletime(curl_off_t filetime, const char *filename,
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88 FILE *error_stream)
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89 {
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90 if(filetime >= 0) {
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91 /* Windows utime() may attempt to adjust the unix GMT file time by a daylight
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92 saving time offset and since it's GMT that is bad behavior. When we have
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93 access to a 64-bit type we can bypass utime and set the times directly. */
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94 #if defined(WIN32) && (SIZEOF_CURL_OFF_T >= 8)
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95 HANDLE hfile;
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96
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97 /* 910670515199 is the maximum unix filetime that can be used as a
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98 Windows FILETIME without overflow: 30827-12-31T23:59:59. */
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99 if(filetime > CURL_OFF_T_C(910670515199)) {
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100 fprintf(error_stream,
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101 "Failed to set filetime %" CURL_FORMAT_CURL_OFF_T
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102 " on outfile: overflow\n", filetime);
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103 return;
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104 }
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105
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106 hfile = CreateFileA(filename, FILE_WRITE_ATTRIBUTES,
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107 (FILE_SHARE_READ | FILE_SHARE_WRITE |
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108 FILE_SHARE_DELETE),
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109 NULL, OPEN_EXISTING, 0, NULL);
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110 if(hfile != INVALID_HANDLE_VALUE) {
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111 curl_off_t converted = ((curl_off_t)filetime * 10000000) +
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112 CURL_OFF_T_C(116444736000000000);
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113 FILETIME ft;
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114 ft.dwLowDateTime = (DWORD)(converted & 0xFFFFFFFF);
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115 ft.dwHighDateTime = (DWORD)(converted >> 32);
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116 if(!SetFileTime(hfile, NULL, &ft, &ft)) {
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117 fprintf(error_stream,
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118 "Failed to set filetime %" CURL_FORMAT_CURL_OFF_T
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119 " on outfile: SetFileTime failed: GetLastError %u\n",
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120 filetime, (unsigned int)GetLastError());
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121 }
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122 CloseHandle(hfile);
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123 }
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124 else {
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125 fprintf(error_stream,
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126 "Failed to set filetime %" CURL_FORMAT_CURL_OFF_T
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127 " on outfile: CreateFile failed: GetLastError %u\n",
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128 filetime, (unsigned int)GetLastError());
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129 }
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130
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131 #elif defined(HAVE_UTIMES)
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132 struct timeval times[2];
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133 times[0].tv_sec = times[1].tv_sec = (time_t)filetime;
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134 times[0].tv_usec = times[1].tv_usec = 0;
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135 if(utimes(filename, times)) {
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136 fprintf(error_stream,
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137 "Failed to set filetime %" CURL_FORMAT_CURL_OFF_T
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138 " on outfile: %s\n", filetime, strerror(errno));
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139 }
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140
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141 #elif defined(HAVE_UTIME)
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142 struct utimbuf times;
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143 times.actime = (time_t)filetime;
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144 times.modtime = (time_t)filetime;
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145 if(utime(filename, &times)) {
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146 fprintf(error_stream,
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147 "Failed to set filetime %" CURL_FORMAT_CURL_OFF_T
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148 " on outfile: %s\n", filetime, strerror(errno));
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149 }
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150 #endif
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151 }
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152 }
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153 #endif /* defined(HAVE_UTIME) || defined(HAVE_UTIMES) || \
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154 (defined(WIN32) && (SIZEOF_CURL_OFF_T >= 8)) */