Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/docs/examples/multi-formadd.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 /* <DESC>
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23 * using the multi interface to do a multipart formpost without blocking
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24 * </DESC>
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25 */
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27 #include <stdio.h>
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28 #include <string.h>
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29 #include <sys/time.h>
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31 #include <curl/curl.h>
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33 int main(void)
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34 {
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35 CURL *curl;
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37 CURLM *multi_handle;
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38 int still_running = 0;
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39
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40 struct curl_httppost *formpost = NULL;
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41 struct curl_httppost *lastptr = NULL;
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42 struct curl_slist *headerlist = NULL;
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43 static const char buf[] = "Expect:";
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44
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45 /* Fill in the file upload field. This makes libcurl load data from
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46 the given file name when curl_easy_perform() is called. */
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47 curl_formadd(&formpost,
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48 &lastptr,
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49 CURLFORM_COPYNAME, "sendfile",
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50 CURLFORM_FILE, "postit2.c",
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51 CURLFORM_END);
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53 /* Fill in the filename field */
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54 curl_formadd(&formpost,
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55 &lastptr,
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56 CURLFORM_COPYNAME, "filename",
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57 CURLFORM_COPYCONTENTS, "postit2.c",
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58 CURLFORM_END);
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59
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60 /* Fill in the submit field too, even if this is rarely needed */
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61 curl_formadd(&formpost,
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62 &lastptr,
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63 CURLFORM_COPYNAME, "submit",
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64 CURLFORM_COPYCONTENTS, "send",
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65 CURLFORM_END);
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66
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67 curl = curl_easy_init();
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68 multi_handle = curl_multi_init();
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70 /* initialize custom header list (stating that Expect: 100-continue is not
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71 wanted */
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72 headerlist = curl_slist_append(headerlist, buf);
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73 if(curl && multi_handle) {
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74
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75 /* what URL that receives this POST */
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76 curl_easy_setopt(curl, CURLOPT_URL, "https://www.example.com/upload.cgi");
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77 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
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78
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79 curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
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80 curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
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81
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82 curl_multi_add_handle(multi_handle, curl);
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83
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84 curl_multi_perform(multi_handle, &still_running);
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86 while(still_running) {
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87 struct timeval timeout;
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88 int rc; /* select() return code */
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89 CURLMcode mc; /* curl_multi_fdset() return code */
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91 fd_set fdread;
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92 fd_set fdwrite;
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93 fd_set fdexcep;
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94 int maxfd = -1;
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96 long curl_timeo = -1;
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98 FD_ZERO(&fdread);
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99 FD_ZERO(&fdwrite);
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100 FD_ZERO(&fdexcep);
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101
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102 /* set a suitable timeout to play around with */
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103 timeout.tv_sec = 1;
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104 timeout.tv_usec = 0;
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105
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106 curl_multi_timeout(multi_handle, &curl_timeo);
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107 if(curl_timeo >= 0) {
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108 timeout.tv_sec = curl_timeo / 1000;
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109 if(timeout.tv_sec > 1)
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110 timeout.tv_sec = 1;
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111 else
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112 timeout.tv_usec = (curl_timeo % 1000) * 1000;
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113 }
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114
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115 /* get file descriptors from the transfers */
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116 mc = curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
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117
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118 if(mc != CURLM_OK) {
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119 fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc);
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120 break;
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121 }
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122
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123 /* On success the value of maxfd is guaranteed to be >= -1. We call
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124 select(maxfd + 1, ...); specially in case of (maxfd == -1) there are
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125 no fds ready yet so we call select(0, ...) --or Sleep() on Windows--
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126 to sleep 100ms, which is the minimum suggested value in the
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127 curl_multi_fdset() doc. */
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128
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129 if(maxfd == -1) {
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130 #ifdef _WIN32
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131 Sleep(100);
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132 rc = 0;
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133 #else
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134 /* Portable sleep for platforms other than Windows. */
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135 struct timeval wait = { 0, 100 * 1000 }; /* 100ms */
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136 rc = select(0, NULL, NULL, NULL, &wait);
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137 #endif
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138 }
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139 else {
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140 /* Note that on some platforms 'timeout' may be modified by select().
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parents:
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141 If you need access to the original value save a copy beforehand. */
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parents:
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142 rc = select(maxfd + 1, &fdread, &fdwrite, &fdexcep, &timeout);
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143 }
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144
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145 switch(rc) {
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146 case -1:
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147 /* select error */
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148 break;
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149 case 0:
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150 default:
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151 /* timeout or readable/writable sockets */
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152 printf("perform!\n");
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153 curl_multi_perform(multi_handle, &still_running);
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parents:
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154 printf("running: %d!\n", still_running);
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diff changeset
155 break;
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parents:
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156 }
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parents:
diff changeset
157 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
158
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parents:
diff changeset
159 curl_multi_cleanup(multi_handle);
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parents:
diff changeset
160
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parents:
diff changeset
161 /* always cleanup */
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
162 curl_easy_cleanup(curl);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
163
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
164 /* then cleanup the formpost chain */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
165 curl_formfree(formpost);
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parents:
diff changeset
166
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parents:
diff changeset
167 /* free slist */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
168 curl_slist_free_all(headerlist);
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parents:
diff changeset
169 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
diff changeset
170 return 0;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
171 }