Fix Unicode font handling (Issue #16)

CHANGES.md

@@ -2,6 +2,12 @@ Changes in PDFio
 ================
 
 
+v1.1.3 (Month DD, YYYY)
+-----------------------
+
+- Fixed Unicode font support (Issue #16)
+
+
 v1.1.2 (October 10, 2023)
 -------------------------
 

Makefile

@@ -29,7 +29,7 @@ DSONAME		=
 LDFLAGS		=
 LIBS		=	-lm -lz
 RANLIB		=	ranlib
-VERSION		=	1.1.2
+VERSION		=	1.1.3
 prefix		=	/usr/local
 
 

pdfio-content.c

@@ -1526,7 +1526,7 @@ pdfioFileCreateFontObjFromFile(
       {
         // Encode a repeating sequence...
         pdfioArrayAppendNumber(w_array, start);
-        pdfioArrayAppendNumber(w_array, i);
+        pdfioArrayAppendNumber(w_array, i - 1);
         pdfioArrayAppendNumber(w_array, w0);
       }
       else
@@ -1551,6 +1551,8 @@ pdfioFileCreateFontObjFromFile(
 
         if (i == 65536)
 	  pdfioArrayAppendNumber(temp_array, w0);
+	else
+	  i --;
 
         pdfioArrayAppendArray(w_array, temp_array);
       }

pdfio.h

@@ -23,7 +23,7 @@ extern "C" {
 // Version number...
 //
 
-#  define PDFIO_VERSION		"1.1.2"
+#  define PDFIO_VERSION		"1.1.3"
 
 
 //

pdfio_native.nuspec

@@ -3,7 +3,7 @@
     <metadata>
         <id>pdfio_native</id>
         <title>PDFio Library for VS2019+</title>
-        <version>1.1.2</version>
+        <version>1.1.3</version>
         <authors>Michael R Sweet</authors>
         <owners>michaelrsweet</owners>
         <projectUrl>https://github.com/michaelrsweet/pappl</projectUrl>
@@ -16,7 +16,7 @@
         <copyright>Copyright © 2019-2023 by Michael R Sweet</copyright>
         <tags>pdf file native</tags>
 	<dependencies>
-	    <dependency id="pdfio_native.redist" version="1.1.2" />
+	    <dependency id="pdfio_native.redist" version="1.1.3" />
 	    <dependency id="zlib_native.redist" version="1.2.11" />
 	</dependencies>
     </metadata>

pdfio_native.redist.nuspec

@@ -3,7 +3,7 @@
     <metadata>
         <id>pdfio_native.redist</id>
         <title>PDFio Library for VS2019+</title>
-        <version>1.1.2</version>
+        <version>1.1.3</version>
         <authors>Michael R Sweet</authors>
         <owners>michaelrsweet</owners>
         <projectUrl>https://github.com/michaelrsweet/pappl</projectUrl>

testpdfio.c

@@ -2391,24 +2391,11 @@ write_font_test(pdfio_file_t *pdf,	// I - PDF file
   };
 
 
-#if 0
+  fputs("pdfioFileCreateFontObjFromFile(OpenSans-Regular.ttf): ", stdout);
-  if (unicode)
+  if ((opensans = pdfioFileCreateFontObjFromFile(pdf, "testfiles/OpenSans-Regular.ttf", unicode)) != NULL)
-  {
+    puts("PASS");
-    fputs("pdfioFileCreateFontObjFromFile(NotoSansJP-Regular.otf): ", stdout);
-    if ((opensans = pdfioFileCreateFontObjFromFile(pdf, "testfiles/NotoSansJP-Regular.otf", true)) != NULL)
-      puts("PASS");
-    else
-      return (1);
-  }
   else
-#endif // 0
+    return (1);
-  {
-    fputs("pdfioFileCreateFontObjFromFile(OpenSans-Regular.ttf): ", stdout);
-    if ((opensans = pdfioFileCreateFontObjFromFile(pdf, "testfiles/OpenSans-Regular.ttf", unicode)) != NULL)
-      puts("PASS");
-    else
-      return (1);
-  }
 
   fputs("pdfioDictCreate: ", stdout);
   if ((dict = pdfioDictCreate(pdf)) != NULL)

ttf.c

@@ -71,11 +71,10 @@ typedef __int64 ssize_t;		// POSIX type not present on Windows...
 
 
 //
-// DEBUG is typically defined for debug builds.  TTF_DEBUG maps to printf when
+// DEBUG is typically defined for debug builds.  TTF_DEBUG maps to fprintf when
 // DEBUG is defined and is a no-op otherwise...
 //
 
-#define DEBUG
 #ifdef DEBUG
 #  define TTF_DEBUG(...) fprintf(stderr, __VA_ARGS__)
 #else
@@ -459,8 +458,7 @@ ttfCreate(const char   *filename,	// I - Filename
     if (font->cmap[i] >= 0)
     {
       int	bin = (int)i / 256,	// Sub-array bin
-		glyph = font->cmap[i] + 1;
+		glyph = font->cmap[i];	// Glyph index
-					// Glyph index (+1 to get past .notdef)
 
       // Update min/max...
       if (font->min_char < 0)
@@ -479,6 +477,11 @@ ttfCreate(const char   *filename,	// I - Filename
       else
 	font->widths[bin][i & 255] = widths[glyph];
     }
+
+#ifdef DEBUG
+    if (i >= ' ' && i < 127)
+      TTF_DEBUG("ttfCreate: width['%c']=%d(%d)\n", (char)i, font->widths[0][i].width, font->widths[0][i].left_bearingx);
+#endif // DEBUG
   }
 
   // Cleanup and return the font...
@@ -735,17 +738,6 @@ ttfGetFamily(ttf_t *font)		// I - Font
 }
 
 
-//
-// 'ttfIsFixedPitch()' - Determine whether a font is fixedpitch.
-//
-
-bool					// O - `true` if fixed pitch, `false` otherwise
-ttfIsFixedPitch(ttf_t *font)		// I - Font
-{
-  return (font ? font->is_fixed : false);
-}
-
-
 //
 // 'ttfGetItalicAngle()' - Get the italic angle.
 //
@@ -854,7 +846,6 @@ int					// O - Width in 1000ths
 ttfGetWidth(ttf_t *font,		// I - Font
             int   ch)			// I - Unicode character
 {
-  ch --;
   int	bin =  ch >> 8;			// Bin in widths array
 
 
@@ -882,6 +873,17 @@ ttfGetXHeight(ttf_t *font)		// I - Font
 }
 
 
+//
+// 'ttfIsFixedPitch()' - Determine whether a font is fixedpitch.
+//
+
+bool					// O - `true` if fixed pitch, `false` otherwise
+ttfIsFixedPitch(ttf_t *font)		// I - Font
+{
+  return (font ? font->is_fixed : false);
+}
+
+
 //
 // 'copy_name()' - Copy a name string from a font.
 //
@@ -1582,6 +1584,8 @@ read_hmtx(ttf_t           *font,	// I - Font
   {
     widths[i].width        = (short)read_ushort(font);
     widths[i].left_bearing = (short)read_short(font);
+
+    TTF_DEBUG("read_hmtx: widths[%d].width=%d, .left_bearing=%d\n", i, widths[i].width, widths[i].left_bearing);
   }
 
   return (widths);