--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/curl/src/tool_helpers.c	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,122 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+#include "tool_setup.h"
+
+#include "strcase.h"
+
+#define ENABLE_CURLX_PRINTF
+/* use our own printf() functions */
+#include "curlx.h"
+
+#include "tool_cfgable.h"
+#include "tool_msgs.h"
+#include "tool_getparam.h"
+#include "tool_helpers.h"
+
+#include "memdebug.h" /* keep this as LAST include */
+
+/*
+** Helper functions that are used from more than one source file.
+*/
+
+const char *param2text(int res)
+{
+  ParameterError error = (ParameterError)res;
+  switch(error) {
+  case PARAM_GOT_EXTRA_PARAMETER:
+    return "had unsupported trailing garbage";
+  case PARAM_OPTION_UNKNOWN:
+    return "is unknown";
+  case PARAM_OPTION_AMBIGUOUS:
+    return "is ambiguous";
+  case PARAM_REQUIRES_PARAMETER:
+    return "requires parameter";
+  case PARAM_BAD_USE:
+    return "is badly used here";
+  case PARAM_BAD_NUMERIC:
+    return "expected a proper numerical parameter";
+  case PARAM_NEGATIVE_NUMERIC:
+    return "expected a positive numerical parameter";
+  case PARAM_LIBCURL_DOESNT_SUPPORT:
+    return "the installed libcurl version doesn't support this";
+  case PARAM_LIBCURL_UNSUPPORTED_PROTOCOL:
+    return "a specified protocol is unsupported by libcurl";
+  case PARAM_NO_MEM:
+    return "out of memory";
+  case PARAM_NO_PREFIX:
+    return "the given option can't be reversed with a --no- prefix";
+  case PARAM_NUMBER_TOO_LARGE:
+    return "too large number";
+  case PARAM_NO_NOT_BOOLEAN:
+    return "used '--no-' for option that isn't a boolean";
+  default:
+    return "unknown error";
+  }
+}
+
+int SetHTTPrequest(struct OperationConfig *config, HttpReq req, HttpReq *store)
+{
+  /* this mirrors the HttpReq enum in tool_sdecls.h */
+  const char *reqname[]= {
+    "", /* unspec */
+    "GET (-G, --get)",
+    "HEAD (-I, --head)",
+    "multipart formpost (-F, --form)",
+    "POST (-d, --data)"
+  };
+
+  if((*store == HTTPREQ_UNSPEC) ||
+     (*store == req)) {
+    *store = req;
+    return 0;
+  }
+  warnf(config->global, "You can only select one HTTP request method! "
+        "You asked for both %s and %s.\n",
+        reqname[req], reqname[*store]);
+
+  return 1;
+}
+
+void customrequest_helper(struct OperationConfig *config, HttpReq req,
+                          char *method)
+{
+  /* this mirrors the HttpReq enum in tool_sdecls.h */
+  const char *dflt[]= {
+    "GET",
+    "GET",
+    "HEAD",
+    "POST",
+    "POST"
+  };
+
+  if(!method)
+    ;
+  else if(curl_strequal(method, dflt[req])) {
+    notef(config->global, "Unnecessary use of -X or --request, %s is already "
+          "inferred.\n", dflt[req]);
+  }
+  else if(curl_strequal(method, "head")) {
+    warnf(config->global,
+          "Setting custom HTTP method to HEAD with -X/--request may not work "
+          "the way you want. Consider using -I/--head instead.\n");
+  }
+}