Add 1.6.2 release date.

CHANGES.md

@@ -9,6 +9,7 @@ v1.7.0 - YYYY-MM-DD
 - Added support for basic compound stream filters for ASCII85Decode support
   (Issue #11)
 - Added support for LZWDecode filters (Issue #11)
+- Added support for Unicode filenames on Windows (Issue #18)
 - Added support for writing object streams (Issue #101)
 - Added support for GIF files (Issue #145)
 - Added support for WebP files (Issue #144)
@@ -17,7 +18,7 @@ v1.7.0 - YYYY-MM-DD
 - Fixed a buffer overflow in the (still not enabled) AES-256 code.
 
 
-v1.6.2 - YYYY-MM-DD
+v1.6.2 - 2026-02-15
 -------------------
 
 - Increased the maximum length of a single string to 128k (Issue #146)
@@ -28,6 +29,7 @@ v1.6.2 - YYYY-MM-DD
 - Fixed xref reconstruction for objects lacking a `Type` value.
 - Fixed `pdfioPageOpenStream` for indirect `Contents` arrays.
 - Fixed an error propagation bug when reading too-long values (Issue #146)
+- Fixed a bug when converting Unicode characters above plane 0 (issue #159)
 - Fixed a Clang warning.
 
 

Makefile.in

@@ -235,6 +235,7 @@ pdfio1.def: $(LIBOBJS) Makefile
 	echo "LIBRARY pdfio1" >$@
 	echo "VERSION $(PDFIO_VERSION_MAJOR).$(PDFIO_VERSION_MINOR)" >>$@
 	echo "EXPORTS" >>$@
+	echo "_pdfio_win32_open" >>$@
 	nm $(LIBOBJS) 2>/dev/null | grep "T _" | awk '{print $$3}' | \
 		grep -v '^_ttf' | sed -e '1,$$s/^_//' | sort >>$@
 

pdfio-content.c

@@ -1885,7 +1885,7 @@ pdfioFileCreateFontObjFromFile(
     return (NULL);
   }
 
-  if ((fd = open(filename, O_RDONLY | O_BINARY)) < 0)
+  if ((fd = open(filename, O_RDONLY | O_BINARY, 0)) < 0)
   {
     _pdfioFileError(pdf, "Unable to open font file '%s': %s", filename, strerror(errno));
     return (NULL);
@@ -2021,7 +2021,7 @@ pdfioFileCreateICCObjFromFile(
     return (NULL);
   }
 
-  if ((fd = open(filename, O_RDONLY | O_BINARY)) < 0)
+  if ((fd = open(filename, O_RDONLY | O_BINARY, 0)) < 0)
   {
     _pdfioFileError(pdf, "Unable to open ICC profile '%s': %s", filename, strerror(errno));
     return (NULL);
@@ -2180,7 +2180,7 @@ pdfioFileCreateImageObjFromFile(
     return (NULL);
 
   // Try opening the file...
-  if ((fd = open(filename, O_RDONLY | O_BINARY)) < 0)
+  if ((fd = open(filename, O_RDONLY | O_BINARY, 0)) < 0)
   {
     _pdfioFileError(pdf, "Unable to open image file '%s': %s", filename, strerror(errno));
     return (NULL);

pdfio-file.c

@@ -1166,7 +1166,7 @@ pdfioFileOpen(
   pdf->permissions = PDFIO_PERMISSION_ALL;
 
   // Open the file...
-  if ((pdf->fd = open(filename, O_RDONLY | O_BINARY)) < 0)
+  if ((pdf->fd = open(filename, O_RDONLY | O_BINARY, 0)) < 0)
   {
     _pdfioFileError(pdf, "Unable to open file - %s", strerror(errno));
     free(pdf->filename);
@@ -1414,8 +1414,88 @@ pdfioFileSetTitle(pdfio_file_t *pdf,	// I - PDF file
 }
 
 
+#if _WIN32
 //
-// '_pdfioObjAdd()' - Add an object to a file.
+// '_pdfio_win32_open()' - Open or create a file.
+//
+// This function handles mapping of UTF-8 filenames to UTF-16 on Windows.
+//
+
+int					// O - File descriptor or -1 on error
+_pdfio_win32_open(const char *filename,	// I - UTF-8 filename
+		  int        oflag,	// I - Open flags
+		  int        mode)	// I - File permissions
+{
+  wchar_t	utf16name[1024],	// UTF-16 filename
+		*utf16ptr;		// Pointer into UTF-16 filename
+  int		unich;			// Unicode character
+
+
+  // Convert the UTF-8 string to UTF-16...
+  utf16ptr = utf16name;
+  while (*filename && utf16ptr < (utf16name + sizeof(utf16name) / sizeof(utf16name[0]) - 2))
+  {
+    if ((unich = *filename++) & 0x80)
+    {
+      if ((unich & 0xe0) == 0xc0 && (*filename & 0xc0) == 0x80)
+      {
+        // 2-byte UTF-8
+        unich = ((unich & 0x1f) << 6) | (*filename & 0x3f);
+        filename ++;
+      }
+      else if ((unich & 0xf0) == 0xe0 && (*filename & 0xc0) == 0x80 && (filename[1] & 0xc0) == 0x80)
+      {
+        // 3-byte UTF-8
+        unich = ((unich & 0x0f) << 12) | ((*filename & 0x3f) << 6) | (filename[1] & 0x3f);
+        filename += 2;
+      }
+      else if ((unich & 0xf8) == 0xf0 && (*filename & 0xc0) == 0x80 && (filename[1] & 0xc0) == 0x80 && (filename[2] & 0xc0) == 0x80)
+      {
+        // 4-byte UTF-8
+        unich = ((unich & 0x07) << 18) | ((*filename & 0x3f) << 12) | ((filename[1] & 0x3f) << 6) | (filename[2] & 0x3f);
+        filename += 3;
+      }
+      else
+      {
+        // Invalid UTF-8 char...
+        errno = EINVAL;
+        return (-1);
+      }
+    }
+
+    // Copy the unicode character...
+    if (unich > 0xffff)
+    {
+      // Two-word sequence...
+      *utf16ptr++ = 0xd800 | ((unich >> 10) & 0x03ff);
+      *utf16ptr++ = 0xdc00 | (unich & 0x03ff);
+    }
+    else
+    {
+      // One-word...
+      *utf16ptr++ = unich;
+    }
+  }
+
+  *utf16ptr = '\0';
+
+  if (*filename)
+  {
+    // Filename too long...
+    errno = EINVAL;
+    return (-1);
+  }
+  else
+  {
+    // Pass on to _wopen...
+    return (_wopen(utf16name, oflag, mode));
+  }
+}
+#endif // WIN32
+
+
+//
+// 'add_obj()' - Add an object to a file.
 //
 
 static pdfio_obj_t *			// O - Object

pdfio-page.c

@@ -126,10 +126,10 @@ pdfioPageGetBoolean(pdfio_obj_t *page,	// I - Page object
 					// Dictionary value
 
 
-  if (v && v->type == PDFIO_VALTYPE_ARRAY)
+  if (v && v->type == PDFIO_VALTYPE_BOOLEAN)
     return (v->value.boolean);
   else
-    return (NULL);
+    return (false);
 }
 
 

pdfio-private.h

@@ -30,7 +30,7 @@
 #    define fileno	_fileno
 #    define lseek(f,o,w) (off_t)_lseek((f),(long)(o),(w))
 #    define mkdir(d,p)	_mkdir(d)
-#    define open	_open
+#    define open	_pdfio_win32_open
 #    define read(f,b,s)	_read((f),(b),(unsigned)(s))
 #    define rmdir	_rmdir
 #    define snprintf	_snprintf
@@ -412,6 +412,7 @@ extern size_t		_pdfio_strlcpy(char *dst, const char *src, size_t dstsize) _PDFIO
 extern double		_pdfio_strtod(pdfio_file_t *pdf, const char *s) _PDFIO_INTERNAL;
 extern void		_pdfio_utf16cpy(char *dst, const unsigned char *src, size_t srclen, size_t dstsize) _PDFIO_INTERNAL;
 extern ssize_t		_pdfio_vsnprintf(pdfio_file_t *pdf, char *buffer, size_t bufsize, const char *format, va_list ap) _PDFIO_INTERNAL;
+extern int		_pdfio_win32_open(const char *filename, int oflag, int mode) _PDFIO_INTERNAL;
 
 extern bool		_pdfioArrayDecrypt(pdfio_file_t *pdf, pdfio_obj_t *obj, pdfio_array_t *a, size_t depth) _PDFIO_INTERNAL;
 extern void		_pdfioArrayDebug(pdfio_array_t *a, FILE *fp) _PDFIO_INTERNAL;

pdfio-string.c

@@ -229,7 +229,7 @@ _pdfio_utf16cpy(
     else
     {
       // 4-byte UTF-8
-      *dstptr++ = (char)(0xe0 | (ch >> 18));
+      *dstptr++ = (char)(0xf0 | (ch >> 18));
       *dstptr++ = (char)(0x80 | ((ch >> 12) & 0x3f));
       *dstptr++ = (char)(0x80 | ((ch >> 6) & 0x3f));
       *dstptr++ = (char)(0x80 | (ch & 0x3f));

pdfio1.def

@@ -1,6 +1,7 @@
 LIBRARY pdfio1
 VERSION 1.7
 EXPORTS
+_pdfio_win32_open
 _pdfio_strlcpy
 _pdfio_strtod
 _pdfio_utf16cpy
@@ -64,6 +65,7 @@ _pdfioStreamOpen
 _pdfioStringAllocBuffer
 _pdfioStringFreeBuffer
 _pdfioStringIsAllocated
+_pdfioStringPrintf
 _pdfioTokenClear
 _pdfioTokenFlush
 _pdfioTokenGet