--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/curl/src/tool_convert.c	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,147 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  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"
+
+#ifdef CURL_DOES_CONVERSIONS
+
+#ifdef HAVE_ICONV
+#  include <iconv.h>
+#endif
+
+#include "tool_convert.h"
+
+#include "memdebug.h" /* keep this as LAST include */
+
+#ifdef HAVE_ICONV
+
+/* curl tool iconv conversion descriptors */
+static iconv_t inbound_cd  = (iconv_t)-1;
+static iconv_t outbound_cd = (iconv_t)-1;
+
+/* set default codesets for iconv */
+#ifndef CURL_ICONV_CODESET_OF_NETWORK
+#  define CURL_ICONV_CODESET_OF_NETWORK "ISO8859-1"
+#endif
+
+/*
+ * convert_to_network() is a curl tool function to convert
+ * from the host encoding to ASCII on non-ASCII platforms.
+ */
+CURLcode convert_to_network(char *buffer, size_t length)
+{
+  /* translate from the host encoding to the network encoding */
+  char *input_ptr, *output_ptr;
+  size_t res, in_bytes, out_bytes;
+
+  /* open an iconv conversion descriptor if necessary */
+  if(outbound_cd == (iconv_t)-1) {
+    outbound_cd = iconv_open(CURL_ICONV_CODESET_OF_NETWORK,
+                             CURL_ICONV_CODESET_OF_HOST);
+    if(outbound_cd == (iconv_t)-1) {
+      return CURLE_CONV_FAILED;
+    }
+  }
+  /* call iconv */
+  input_ptr = output_ptr = buffer;
+  in_bytes = out_bytes = length;
+  res = iconv(outbound_cd, &input_ptr,  &in_bytes,
+              &output_ptr, &out_bytes);
+  if((res == (size_t)-1) || (in_bytes != 0)) {
+    return CURLE_CONV_FAILED;
+  }
+
+  return CURLE_OK;
+}
+
+/*
+ * convert_from_network() is a curl tool function
+ * for performing ASCII conversions on non-ASCII platforms.
+ */
+CURLcode convert_from_network(char *buffer, size_t length)
+{
+  /* translate from the network encoding to the host encoding */
+  char *input_ptr, *output_ptr;
+  size_t res, in_bytes, out_bytes;
+
+  /* open an iconv conversion descriptor if necessary */
+  if(inbound_cd == (iconv_t)-1) {
+    inbound_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
+                            CURL_ICONV_CODESET_OF_NETWORK);
+    if(inbound_cd == (iconv_t)-1) {
+      return CURLE_CONV_FAILED;
+    }
+  }
+  /* call iconv */
+  input_ptr = output_ptr = buffer;
+  in_bytes = out_bytes = length;
+  res = iconv(inbound_cd, &input_ptr,  &in_bytes,
+              &output_ptr, &out_bytes);
+  if((res == (size_t)-1) || (in_bytes != 0)) {
+    return CURLE_CONV_FAILED;
+  }
+
+  return CURLE_OK;
+}
+
+void convert_cleanup(void)
+{
+  /* close iconv conversion descriptors */
+  if(inbound_cd != (iconv_t)-1)
+    (void)iconv_close(inbound_cd);
+  if(outbound_cd != (iconv_t)-1)
+    (void)iconv_close(outbound_cd);
+}
+
+#endif /* HAVE_ICONV */
+
+char convert_char(curl_infotype infotype, char this_char)
+{
+/* determine how this specific character should be displayed */
+  switch(infotype) {
+  case CURLINFO_DATA_IN:
+  case CURLINFO_DATA_OUT:
+  case CURLINFO_SSL_DATA_IN:
+  case CURLINFO_SSL_DATA_OUT:
+    /* data, treat as ASCII */
+    if(this_char < 0x20 || this_char >= 0x7f) {
+      /* non-printable ASCII, use a replacement character */
+      return UNPRINTABLE_CHAR;
+    }
+    /* printable ASCII hex value: convert to host encoding */
+    (void)convert_from_network(&this_char, 1);
+    /* FALLTHROUGH */
+  default:
+    /* treat as host encoding */
+    if(ISPRINT(this_char)
+       &&  (this_char != '\t')
+       &&  (this_char != '\r')
+       &&  (this_char != '\n')) {
+      /* printable characters excluding tabs and line end characters */
+      return this_char;
+    }
+    break;
+  }
+  /* non-printable, use a replacement character  */
+  return UNPRINTABLE_CHAR;
+}
+
+#endif /* CURL_DOES_CONVERSIONS */