Add unzipfx as extra vendored dependency, for CI builds

Signed-off-by: falkTX <falktx@falktx.com>

deps/unzipfx/win32/win32i64.c

@@ -0,0 +1,129 @@
+/*
+  Copyright (c) 1990-2009 Info-ZIP.  All rights reserved.
+
+  See the accompanying file LICENSE, version 2009-Jan-02 or later
+  (the contents of which are also included in zip.h) for terms of use.
+  If, for some reason, all these files are missing, the Info-ZIP license
+  also may be found at:  ftp://ftp.info-zip.org/pub/infozip/license.html
+*/
+/*---------------------------------------------------------------------------
+
+  win32/win32i64.c - UnZip 6
+
+  64-bit filesize support for WIN32 Zip and UnZip.
+  ---------------------------------------------------------------------------*/
+
+#include "../zip.h"
+
+/* --------------------------------------------------- */
+/* Large File Support
+ *
+ * Initial functions by E. Gordon and R. Nausedat
+ * 9/10/2003
+ *
+ * These implement 64-bit file support for Windows.  The
+ * defines and headers are in win32/osdep.h.
+ *
+ * These moved from win32.c by Mike White to avoid conflicts
+ * in WiZ of same name functions in UnZip and Zip libraries.
+ * 9/25/04 EG
+ */
+
+#if defined(LARGE_FILE_SUPPORT) && !defined(__CYGWIN__)
+# ifdef USE_STRM_INPUT
+
+#  ifndef zftello
+/* 64-bit buffered ftello
+ *
+ * Win32 does not provide a 64-bit buffered
+ * ftell (in the published api anyway) so below provides
+ * hopefully close version.
+ * We have not gotten _telli64 to work with buffered
+ * streams.  Below cheats by using fgetpos improperly and
+ * may not work on other ports.
+ */
+
+zoff_t zftello(stream)
+  FILE *stream;
+{
+  fpos_t fpos = 0;
+
+  if (fgetpos(stream, &fpos) != 0) {
+    return -1L;
+  } else {
+    return fpos;
+  }
+}
+#  endif /* ndef zftello */
+
+
+#  ifndef zfseeko
+/* 64-bit buffered fseeko
+ *
+ * Win32 does not provide a 64-bit buffered
+ * fseeko, so use _lseeki64 and fflush.  Note
+ * that SEEK_CUR can lose track of location
+ * if fflush is done between the last buffered
+ * io and this call.
+ */
+
+int zfseeko(stream, offset, origin)
+  FILE *stream;
+  zoff_t offset;
+  int origin;
+{
+
+  /* fseek() or its replacements are supposed to clear the eof status
+     of the stream. fflush() and _lseeki64() do not touch the stream's
+     eof flag, so we have to do it manually. */
+#if ((defined(_MSC_VER) && (_MSC_VER >= 1200)) || \
+     (defined(__MINGW32__) && defined(__MSVCRT_VERSION__)))
+  /* For the MSC environment (VS 6 or higher), and for recent releases of
+     the MinGW environment, we "know" the internals of the FILE structure.
+     So, we can clear just the EOF bit of the status flag. */
+  stream->_flag &= ~_IOEOF;
+#else
+  /* Unfortunately, there is no standard "cleareof()" function, so we have
+     to use clearerr().  This has the unwanted side effect of clearing the
+     ferror() state as well. */
+  clearerr(stream);
+#endif
+
+  if (origin == SEEK_CUR) {
+    /* instead of synching up lseek easier just to figure and
+       use an absolute offset */
+    offset += zftello(stream);
+    origin = SEEK_SET;
+  }
+  fflush(stream);
+  if (_lseeki64(fileno(stream), offset, origin) == (zoff_t)-1L) {
+    return -1;
+  } else {
+    return 0;
+  }
+}
+#  endif  /* ndef fseeko */
+# endif /* USE_STRM_INPUT */
+#endif  /* Win32 LARGE_FILE_SUPPORT */
+
+#if 0
+FILE* zfopen(filename, mode)
+const char *filename;
+const char *mode;
+{
+  FILE* fTemp;
+
+  fTemp = fopen(filename, mode);
+  if( fTemp == NULL )
+    return NULL;
+
+  /* sorry, could not make VC60 and its rtl work properly without setting the
+   * file buffer to NULL. the problem seems to be _telli64 which seems to
+   * return the max stream position, comments are welcome
+   */
+  setbuf(fTemp, NULL);
+
+  return fTemp;
+}
+#endif
+/* --------------------------------------------------- */