Bump version.

Specifically to support Unicode Title and Author values.

.gitignore

@@ -14,6 +14,7 @@
 /examples/code128
 /examples/image2pdf
 /examples/md2pdf
+/examples/pdf2text
 /examples/pdfioinfo
 /Makefile
 /packages
@@ -21,7 +22,6 @@
 /pdfio.xcodeproj/xcshareddata
 /pdfio-*.tar.gz*
 /pdfio-*.zip*
-/pdfiototext
 /testpdfio
 /testpdfio-*.pdf
 /testttf

CHANGES.md

@@ -1,8 +1,19 @@
 Changes in PDFio
 ================
 
+v1.4.1 - 2025-01-24
+-------------------
 
-v1.4.0 - YYYY-MM-DD
+- Added license files for the example fonts now bundled with PDFio (Issue #91)
+- Fixed the link libraries for the example source code (Issue #86)
+- Fixed handling of the Info object (Issue #87)
+- Fixed opening of PDF files less than 1024 bytes in length (Issue #87)
+- Fixed potential `NULL` dereference when reading (Issue #89)
+- Fixed reading of compressed object streams (Issue #92)
+- Fixed reading of UTF-16 string values (Issue #92)
+
+
+v1.4.0 - 2024-12-26
 -------------------
 
 - Added new `pdfioDictGetKey` and `pdfioDictGetNumPairs` APIs (Issue #63)

Makefile.in

@@ -1,7 +1,7 @@
 #
 # Makefile for PDFio.
 #
-# Copyright © 2021-2024 by Michael R Sweet.
+# Copyright © 2021-2025 by Michael R Sweet.
 #
 # Licensed under Apache License v2.0.  See the file "LICENSE" for more
 # information.
@@ -103,15 +103,35 @@ LIBOBJS		=	\
 			ttf.o
 OBJS		=	\
 			$(LIBOBJS) \
-			pdfiototext.o \
 			testpdfio.o \
 			testttf.o
 TARGETS		=	\
 			$(LIBPDFIO) \
 			$(LIBPDFIO_STATIC) \
-			pdfiototext \
 			testpdfio \
 			testttf
+DOCFILES	=	\
+			doc/pdfio.html \
+			doc/pdfio-512.png \
+			LICENSE \
+			NOTICE
+EXAMPLES	=	\
+			examples/Makefile \
+			examples/Roboto-LICENSE.txt \
+			examples/Roboto-Bold.ttf \
+			examples/Roboto-Italic.ttf \
+			examples/Roboto-Regular.ttf \
+			examples/RobotoMono-Regular.ttf \
+			examples/code128.c \
+			examples/code128.ttf \
+			examples/code128-LICENSE.txt \
+			examples/image2pdf.c \
+			examples/md2pdf.c \
+			examples/md2pdf.md \
+			examples/mmd.c \
+			examples/mmd.h \
+			examples/pdf2text.c \
+			examples/pdfioinfo.c
 
 
 # Make everything
@@ -152,9 +172,14 @@ install:	$(TARGETS)
 	$(INSTALL) -c -m 644 pdfio.pc $(BUILDROOT)$(libdir)/pkgconfig
 	echo Installing documentation to $(BUILDROOT)$(datadir)/doc/pdfio...
 	$(INSTALL) -d -m 755 $(BUILDROOT)$(datadir)/doc/pdfio
-	for file in doc/pdfio.html doc/pdfio-512.png LICENSE NOTICE; do \
+	for file in $(DOCFILES); do \
 		$(INSTALL) -c -m 644 $$file $(BUILDROOT)$(datadir)/doc/pdfio; \
 	done
+	echo Installing examples to $(BUILDROOT)$(datadir)/doc/pdfio/examples...
+	$(INSTALL) -d -m 755 $(BUILDROOT)$(datadir)/doc/pdfio/examples
+	for file in $(EXAMPLES); do \
+		$(INSTALL) -c -m 644 $$file $(BUILDROOT)$(datadir)/doc/pdfio/examples; \
+	done
 	echo Installing man page to $(BUILDROOT)$(mandir)/man3...
 	$(INSTALL) -d -m 755 $(BUILDROOT)$(mandir)/man3
 	$(INSTALL) -c -m 644 doc/pdfio.3 $(BUILDROOT)$(mandir)/man3
@@ -201,12 +226,6 @@ pdfio1.def: $(LIBOBJS) Makefile
 		grep -v '^_ttf' | sed -e '1,$$s/^_//' | sort >>$@
 
 
-# pdfio text extraction (demo, doesn't handle a lot of things yet)
-pdfiototext:		pdfiototext.o libpdfio.a
-	echo Linking $@...
-	$(CC) $(LDFLAGS) -o $@ pdfiototext.o libpdfio.a $(LIBS)
-
-
 # pdfio test program
 testpdfio:		testpdfio.o libpdfio.a
 	echo Linking $@...
@@ -229,7 +248,7 @@ ttf.o:			ttf.h
 # Make documentation using Codedoc <https://www.msweet.org/codedoc>
 DOCFLAGS	=	\
 			--author "Michael R Sweet" \
-			--copyright "Copyright (c) 2021-2024 by Michael R Sweet" \
+			--copyright "Copyright (c) 2021-2025 by Michael R Sweet" \
 			--docversion $(PDFIO_VERSION)
 
 .PHONY: doc

NOTICE

@@ -1,6 +1,6 @@
 PDFio - PDF Read/Write Library
 
-Copyright © 2021-2024 by Michael R Sweet.
+Copyright © 2021-2025 by Michael R Sweet.
 
 (Optional) Exceptions to the Apache 2.0 License:
 ================================================

README.md

@@ -89,7 +89,7 @@ generates a static library that will be installed under "/usr/local" with:
 Legal Stuff
 -----------
 
-PDFio is Copyright © 2021-2024 by Michael R Sweet.
+PDFio is Copyright © 2021-2025 by Michael R Sweet.
 
 This software is licensed under the Apache License Version 2.0 with an
 (optional) exception to allow linking against GPL2/LGPL2 software.  See the

configure

@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.71 for pdfio 1.4.0.
+# Generated by GNU Autoconf 2.71 for pdfio 1.4.1.
 #
 # Report bugs to <https://github.com/michaelrsweet/pdfio/issues>.
 #
@@ -610,8 +610,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='pdfio'
 PACKAGE_TARNAME='pdfio'
-PACKAGE_VERSION='1.4.0'
+PACKAGE_VERSION='1.4.1'
-PACKAGE_STRING='pdfio 1.4.0'
+PACKAGE_STRING='pdfio 1.4.1'
 PACKAGE_BUGREPORT='https://github.com/michaelrsweet/pdfio/issues'
 PACKAGE_URL='https://www.msweet.org/pdfio'
 
@@ -1293,7 +1293,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures pdfio 1.4.0 to adapt to many kinds of systems.
+\`configure' configures pdfio 1.4.1 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1359,7 +1359,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of pdfio 1.4.0:";;
+     short | recursive ) echo "Configuration of pdfio 1.4.1:";;
    esac
   cat <<\_ACEOF
 
@@ -1456,7 +1456,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-pdfio configure 1.4.0
+pdfio configure 1.4.1
 generated by GNU Autoconf 2.71
 
 Copyright (C) 2021 Free Software Foundation, Inc.
@@ -1612,7 +1612,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by pdfio $as_me 1.4.0, which was
+It was created by pdfio $as_me 1.4.1, which was
 generated by GNU Autoconf 2.71.  Invocation command line was
 
   $ $0$ac_configure_args_raw
@@ -2368,9 +2368,9 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 
-PDFIO_VERSION="1.4.0"
+PDFIO_VERSION="1.4.1"
-PDFIO_VERSION_MAJOR="`echo 1.4.0 | awk -F. '{print $1}'`"
+PDFIO_VERSION_MAJOR="`echo 1.4.1 | awk -F. '{print $1}'`"
-PDFIO_VERSION_MINOR="`echo 1.4.0 | awk -F. '{printf("%d\n",$2);}'`"
+PDFIO_VERSION_MINOR="`echo 1.4.1 | awk -F. '{printf("%d\n",$2);}'`"
 
 
 
@@ -4935,7 +4935,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by pdfio $as_me 1.4.0, which was
+This file was extended by pdfio $as_me 1.4.1, which was
 generated by GNU Autoconf 2.71.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -4991,7 +4991,7 @@ ac_cs_config_escaped=`printf "%s\n" "$ac_cs_config" | sed "s/^ //; s/'/'\\\\\\\\
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
-pdfio config.status 1.4.0
+pdfio config.status 1.4.1
 configured by $0, generated by GNU Autoconf 2.71,
   with options \\"\$ac_cs_config\\"
 

configure.ac

@@ -21,7 +21,7 @@ AC_PREREQ([2.70])
 
 
 dnl Package name and version...
-AC_INIT([pdfio], [1.4.0], [https://github.com/michaelrsweet/pdfio/issues], [pdfio], [https://www.msweet.org/pdfio])
+AC_INIT([pdfio], [1.4.1], [https://github.com/michaelrsweet/pdfio/issues], [pdfio], [https://www.msweet.org/pdfio])
 
 PDFIO_VERSION="AC_PACKAGE_VERSION"
 PDFIO_VERSION_MAJOR="`echo AC_PACKAGE_VERSION | awk -F. '{print $1}'`"

doc/pdfio.3

@@ -1,4 +1,4 @@
-.TH pdfio 3 "pdf read/write library" "2024-12-22" "pdf read/write library"
+.TH pdfio 3 "pdf read/write library" "2025-01-24" "pdf read/write library"
 .SH NAME
 pdfio \- pdf read/write library
 .SH Introduction
@@ -1028,6 +1028,8 @@ pdfioContentTextShowJustified draws an array of literal strings with offsets bet
 
 
 .SH Examples
+.PP
+PDFio includes several example programs that are typically installed to the /usr/share/doc/pdfio/examples or /usr/local/share/doc/pdfio/examples directories. A makefile is included to build them.
 .SS Read PDF Metadata
 .PP
 The pdfioinfo.c example program opens a PDF file and prints the title, author, creation date, and number of pages:
@@ -1043,9 +1045,11 @@ The pdfioinfo.c example program opens a PDF file and prints the title, author, c
     {
       const char    *filename;              // PDF filename
       pdfio_file_t  *pdf;                   // PDF file
+      const char    *author;                // Author name
       time_t        creation_date;          // Creation date
       struct tm     *creation_tm;           // Creation date/time information
       char          creation_text[256];     // Creation date/time as a string
+      const char    *title;                 // Title
     
     
       // Get the filename from the command\-line...
@@ -1063,15 +1067,25 @@ The pdfioinfo.c example program opens a PDF file and prints the title, author, c
       if (pdf == NULL)
         return (1);
     
+      // Get the title and author...
+      author = pdfioFileGetAuthor(pdf);
+      title  = pdfioFileGetTitle(pdf);
+    
       // Get the creation date and convert to a string...
-      creation_date = pdfioFileGetCreationDate(pdf);
+      if ((creation_date = pdfioFileGetCreationDate(pdf)) > 0)
+      {
         creation_tm   = localtime(&creation_date);
         strftime(creation_text, sizeof(creation_text), "%c", creation_tm);
+      }
+      else
+      {
+        snprintf(creation_text, sizeof(creation_text), "\-\- not set \-\-");
+      }
     
       // Print file information to stdout...
       printf("%s:\\n", filename);
-      printf("         Title: %s\\n", pdfioFileGetTitle(pdf));
+      printf("         Title: %s\\n", title ? title : "\-\- not set \-\-");
-      printf("        Author: %s\\n", pdfioFileGetAuthor(pdf));
+      printf("        Author: %s\\n", author ? author : "\-\- not set \-\-");
       printf("    Created On: %s\\n", creation_text);
       printf("  Number Pages: %u\\n", (unsigned)pdfioFileGetNumPages(pdf));
     
@@ -1081,7 +1095,43 @@ The pdfioinfo.c example program opens a PDF file and prints the title, author, c
       return (0);
     }
 .fi
-.SS Create PDF File With Text and Image
+.SS Extract Text from PDF File
+.PP
+The pdf2text.c example code extracts non\-Unicode text from a PDF file by scanning each page for strings and text drawing commands. Since it doesn't look at the font encoding or support Unicode text, it is really only useful to extract plain ASCII text from a PDF file. And since it writes text in the order it appears in the page stream, it may not come out in the same order as appears on the page.
+.PP
+The pdfioStreamGetToken function is used to read individual tokens from the page streams. Tokens starting with the open parenthesis are text strings, while PDF operators are left as\-is. We use some simple logic to make sure that we include spaces between text strings and add newlines for the text operators that start a new line in a text block:
+.nf
+
+    pdfio_stream_t *st;              // Page stream
+    bool           first = true;     // First string on line?
+    char           buffer[1024];     // Token buffer
+    
+    // Read PDF tokens from the page stream...
+    while (pdfioStreamGetToken(st, buffer, sizeof(buffer)))
+    {
+      if (buffer[0] == '(')
+      {
+        // Text string using an 8\-bit encoding
+        if (first)
+          first = false;
+        else if (buffer[1] != ' ')
+          putchar(' ');
+    
+        fputs(buffer + 1, stdout);
+      }
+      else if (!strcmp(buffer, "Td") || !strcmp(buffer, "TD") || !strcmp(buffer, "T*") ||
+               !strcmp(buffer, "\\'") || !strcmp(buffer, "\\""))
+      {
+        // Text operators that advance to the next line in the block
+        putchar('\\n');
+        first = true;
+      }
+    }
+    
+    if (!first)
+      putchar('\\n');
+.fi
+.SS Create a PDF File With Text and an Image
 .PP
 The image2pdf.c example code creates a PDF file containing a JPEG or PNG image file and optional caption on a single page. The create_pdf_image_file function creates the PDF file, embeds a base font and the named JPEG or PNG image file, and then creates a page with the image centered on the page with any text centered below:
 .nf
@@ -2024,7 +2074,7 @@ The render_line function adds content from the linefrag_t array to a PDF page. I
     }
 .fi
 .PP
-We then loops through the fragments for the current line, drawing checkboxes, images, and text as needed. When a hyperlink is present, we add the link to the links array in the docdata_t structure, mapping "@" and "@@" to an internal link corresponding to the linked text:
+We then loop through the fragments for the current line, drawing checkboxes, images, and text as needed. When a hyperlink is present, we add the link to the links array in the docdata_t structure, mapping "@" and "@@" to an internal link corresponding to the linked text:
 .nf
 
     if (frag\->url && dd\->num_links < DOCLINK_MAX)
@@ -2099,7 +2149,7 @@ Then it formats each cell using the format_block function described previously.
     
     for (col = 0; col < num_cols; col ++)
     {
-      dd|>y = row_y;
+      dd\->y = row_y;
     
       format_block(dd, row\->cells[col], deffont, SIZE_TABLE, cols[col].left,
                    cols[col].right, /*leader*/NULL);
@@ -4517,4 +4567,4 @@ typedef enum pdfio_valtype_e pdfio_valtype_t;
 Michael R Sweet
 .SH COPYRIGHT
 .PP
-Copyright (c) 2021-2024 by Michael R Sweet
+Copyright (c) 2021-2025 by Michael R Sweet

doc/pdfio.html

@@ -1,13 +1,13 @@
 <!DOCTYPE html>
 <html lang="en-US">
 <head>
-<title>PDFio Programming Manual v1.4.0</title>
+<title>PDFio Programming Manual v1.4.1</title>
 <meta http-equiv="Content-Type" content="text/html;charset=utf-8">
 <meta name="generator" content="codedoc v3.8">
 <meta name="author" content="Michael R Sweet">
 <meta name="language" content="en-US">
-<meta name="copyright" content="Copyright © 2021-2024 by Michael R Sweet">
+<meta name="copyright" content="Copyright © 2021-2025 by Michael R Sweet">
-<meta name="version" content="1.4.0">
+<meta name="version" content="1.4.1">
 <style type="text/css"><!--
 body {
   background: white;
@@ -251,9 +251,9 @@ span.string {
 <body>
 <div class="header">
 <p><img class="title" src="pdfio-512.png"></p>
-<h1 class="title">PDFio Programming Manual v1.4.0</h1>
+<h1 class="title">PDFio Programming Manual v1.4.1</h1>
 <p>Michael R Sweet</p>
-<p>Copyright © 2021-2024 by Michael R Sweet</p>
+<p>Copyright © 2021-2025 by Michael R Sweet</p>
 </div>
 <div class="contents">
 <h2 class="title">Contents</h2>
@@ -276,7 +276,8 @@ span.string {
 </ul></li>
 <li><a href="#examples">Examples</a><ul class="subcontents">
 <li><a href="#read-pdf-metadata">Read PDF Metadata</a></li>
-<li><a href="#create-pdf-file-with-text-and-image">Create PDF File With Text and Image</a></li>
+<li><a href="#extract-text-from-pdf-file">Extract Text from PDF File</a></li>
+<li><a href="#create-a-pdf-file-with-text-and-an-image">Create a PDF File With Text and an Image</a></li>
 <li><a href="#generate-a-code-128-barcode">Generate a Code 128 Barcode</a></li>
 <li><a href="#convert-markdown-to-pdf">Convert Markdown to PDF</a></li>
 </ul></li>
@@ -1147,6 +1148,7 @@ pdfio_obj_t *img =
 </li>
 </ul>
 <h2 class="title" id="examples">Examples</h2>
+<p>PDFio includes several example programs that are typically installed to the <code>/usr/share/doc/pdfio/examples</code> or <code>/usr/local/share/doc/pdfio/examples</code> directories. A makefile is included to build them.</p>
 <h3 class="title" id="read-pdf-metadata">Read PDF Metadata</h3>
 <p>The <code>pdfioinfo.c</code> example program opens a PDF file and prints the title, author, creation date, and number of pages:</p>
 <pre><code class="language-c"><span class="directive">#include &lt;pdfio.h&gt;</span>
@@ -1159,9 +1161,11 @@ main(<span class="reserved">int</span>  argc,                         <span clas
 {
   <span class="reserved">const</span> <span class="reserved">char</span>    *filename;              <span class="comment">// PDF filename</span>
   pdfio_file_t  *pdf;                   <span class="comment">// PDF file</span>
+  <span class="reserved">const</span> <span class="reserved">char</span>    *author;                <span class="comment">// Author name</span>
   time_t        creation_date;          <span class="comment">// Creation date</span>
   <span class="reserved">struct</span> tm     *creation_tm;           <span class="comment">// Creation date/time information</span>
   <span class="reserved">char</span>          creation_text[<span class="number">256</span>];     <span class="comment">// Creation date/time as a string</span>
+  <span class="reserved">const</span> <span class="reserved">char</span>    *title;                 <span class="comment">// Title</span>
 
 
   <span class="comment">// Get the filename from the command-line...</span>
@@ -1179,15 +1183,25 @@ main(<span class="reserved">int</span>  argc,                         <span clas
   <span class="reserved">if</span> (pdf == NULL)
     <span class="reserved">return</span> (<span class="number">1</span>);
 
+  <span class="comment">// Get the title and author...</span>
+  author = pdfioFileGetAuthor(pdf);
+  title  = pdfioFileGetTitle(pdf);
+
   <span class="comment">// Get the creation date and convert to a string...</span>
-  creation_date = pdfioFileGetCreationDate(pdf);
+  <span class="reserved">if</span> ((creation_date = pdfioFileGetCreationDate(pdf)) &gt; <span class="number">0</span>)
+  {
     creation_tm   = localtime(&amp;creation_date);
     strftime(creation_text, <span class="reserved">sizeof</span>(creation_text), <span class="string">&quot;%c&quot;</span>, creation_tm);
+  }
+  <span class="reserved">else</span>
+  {
+    snprintf(creation_text, <span class="reserved">sizeof</span>(creation_text), <span class="string">&quot;-- not set --&quot;</span>);
+  }
 
   <span class="comment">// Print file information to stdout...</span>
   printf(<span class="string">&quot;%s:\n&quot;</span>, filename);
-  printf(<span class="string">&quot;         Title: %s\n&quot;</span>, pdfioFileGetTitle(pdf));
+  printf(<span class="string">&quot;         Title: %s\n&quot;</span>, title ? title : <span class="string">&quot;-- not set --&quot;</span>);
-  printf(<span class="string">&quot;        Author: %s\n&quot;</span>, pdfioFileGetAuthor(pdf));
+  printf(<span class="string">&quot;        Author: %s\n&quot;</span>, author ? author : <span class="string">&quot;-- not set --&quot;</span>);
   printf(<span class="string">&quot;    Created On: %s\n&quot;</span>, creation_text);
   printf(<span class="string">&quot;  Number Pages: %u\n&quot;</span>, (<span class="reserved">unsigned</span>)pdfioFileGetNumPages(pdf));
 
@@ -1197,7 +1211,39 @@ main(<span class="reserved">int</span>  argc,                         <span clas
   <span class="reserved">return</span> (<span class="number">0</span>);
 }
 </code></pre>
-<h3 class="title" id="create-pdf-file-with-text-and-image">Create PDF File With Text and Image</h3>
+<h3 class="title" id="extract-text-from-pdf-file">Extract Text from PDF File</h3>
+<p>The <code>pdf2text.c</code> example code extracts non-Unicode text from a PDF file by scanning each page for strings and text drawing commands. Since it doesn't look at the font encoding or support Unicode text, it is really only useful to extract plain ASCII text from a PDF file. And since it writes text in the order it appears in the page stream, it may not come out in the same order as appears on the page.</p>
+<p>The <a href="#pdfioStreamGetToken"><code>pdfioStreamGetToken</code></a> function is used to read individual tokens from the page streams. Tokens starting with the open parenthesis are text strings, while PDF operators are left as-is. We use some simple logic to make sure that we include spaces between text strings and add newlines for the text operators that start a new line in a text block:</p>
+<pre><code class="language-c">pdfio_stream_t *st;              <span class="comment">// Page stream</span>
+<span class="reserved">bool</span>           first = <span class="reserved">true</span>;     <span class="comment">// First string on line?</span>
+<span class="reserved">char</span>           buffer[<span class="number">1024</span>];     <span class="comment">// Token buffer</span>
+
+<span class="comment">// Read PDF tokens from the page stream...</span>
+<span class="reserved">while</span> (pdfioStreamGetToken(st, buffer, <span class="reserved">sizeof</span>(buffer)))
+{
+  <span class="reserved">if</span> (buffer[<span class="number">0</span>] == <span class="string">'('</span>)
+  {
+    <span class="comment">// Text string using an 8-bit encoding</span>
+    <span class="reserved">if</span> (first)
+      first = <span class="reserved">false</span>;
+    <span class="reserved">else</span> <span class="reserved">if</span> (buffer[<span class="number">1</span>] != <span class="string">' '</span>)
+      putchar(<span class="string">' '</span>);
+
+    fputs(buffer + <span class="number">1</span>, stdout);
+  }
+  <span class="reserved">else</span> <span class="reserved">if</span> (!strcmp(buffer, <span class="string">&quot;Td&quot;</span>) || !strcmp(buffer, <span class="string">&quot;TD&quot;</span>) || !strcmp(buffer, <span class="string">&quot;T*&quot;</span>) ||
+           !strcmp(buffer, <span class="string">&quot;\'&quot;</span>) || !strcmp(buffer, <span class="string">&quot;\&quot;&quot;</span>))
+  {
+    <span class="comment">// Text operators that advance to the next line in the block</span>
+    putchar(<span class="string">'\n'</span>);
+    first = <span class="reserved">true</span>;
+  }
+}
+
+<span class="reserved">if</span> (!first)
+  putchar(<span class="string">'\n'</span>);
+</code></pre>
+<h3 class="title" id="create-a-pdf-file-with-text-and-an-image">Create a PDF File With Text and an Image</h3>
 <p>The <code>image2pdf.c</code> example code creates a PDF file containing a JPEG or PNG image file and optional caption on a single page. The <code>create_pdf_image_file</code> function creates the PDF file, embeds a base font and the named JPEG or PNG image file, and then creates a page with the image centered on the page with any text centered below:</p>
 <pre><code class="language-c"><span class="directive">#include &lt;pdfio.h&gt;</span>
 <span class="directive">#include &lt;pdfio-content.h&gt;</span>
@@ -1988,7 +2034,7 @@ dd-&gt;y -= margin_top + lineheight;
   dd-&gt;y -= lineheight;
 }
 </code></pre>
-<p>We then loops through the fragments for the current line, drawing checkboxes, images, and text as needed. When a hyperlink is present, we add the link to the <code>links</code> array in the <code>docdata_t</code> structure, mapping &quot;@&quot; and &quot;@@&quot; to an internal link corresponding to the linked text:</p>
+<p>We then loop through the fragments for the current line, drawing checkboxes, images, and text as needed. When a hyperlink is present, we add the link to the <code>links</code> array in the <code>docdata_t</code> structure, mapping &quot;@&quot; and &quot;@@&quot; to an internal link corresponding to the linked text:</p>
 <pre><code class="language-c"><span class="reserved">if</span> (frag-&gt;url &amp;&amp; dd-&gt;num_links &lt; DOCLINK_MAX)
 {
   doclink_t *l = dd-&gt;links + dd-&gt;num_links;
@@ -2053,7 +2099,7 @@ dd-&gt;y -= margin_top + lineheight;
 
 <span class="reserved">for</span> (col = <span class="number">0</span>; col &lt; num_cols; col ++)
 {
-  dd<EFBFBD>&gt;y = row_y;
+  dd-&gt;y = row_y;
 
   format_block(dd, row-&gt;cells[col], deffont, SIZE_TABLE, cols[col].left,
                cols[col].right, <span class="comment">/*leader*/</span>NULL);

doc/pdfio.md

@@ -864,6 +864,10 @@ escaping, as needed:
 Examples
 ========
 
+PDFio includes several example programs that are typically installed to the
+`/usr/share/doc/pdfio/examples` or `/usr/local/share/doc/pdfio/examples`
+directories.  A makefile is included to build them.
+
 
 Read PDF Metadata
 -----------------
@@ -882,9 +886,11 @@ main(int  argc,                         // I - Number of command-line arguments
 {
   const char    *filename;              // PDF filename
   pdfio_file_t  *pdf;                   // PDF file
+  const char    *author;                // Author name
   time_t        creation_date;          // Creation date
   struct tm     *creation_tm;           // Creation date/time information
   char          creation_text[256];     // Creation date/time as a string
+  const char    *title;                 // Title
 
 
   // Get the filename from the command-line...
@@ -902,15 +908,25 @@ main(int  argc,                         // I - Number of command-line arguments
   if (pdf == NULL)
     return (1);
 
+  // Get the title and author...
+  author = pdfioFileGetAuthor(pdf);
+  title  = pdfioFileGetTitle(pdf);
+
   // Get the creation date and convert to a string...
-  creation_date = pdfioFileGetCreationDate(pdf);
+  if ((creation_date = pdfioFileGetCreationDate(pdf)) > 0)
+  {
     creation_tm   = localtime(&creation_date);
     strftime(creation_text, sizeof(creation_text), "%c", creation_tm);
+  }
+  else
+  {
+    snprintf(creation_text, sizeof(creation_text), "-- not set --");
+  }
 
   // Print file information to stdout...
   printf("%s:\n", filename);
-  printf("         Title: %s\n", pdfioFileGetTitle(pdf));
+  printf("         Title: %s\n", title ? title : "-- not set --");
-  printf("        Author: %s\n", pdfioFileGetAuthor(pdf));
+  printf("        Author: %s\n", author ? author : "-- not set --");
   printf("    Created On: %s\n", creation_text);
   printf("  Number Pages: %u\n", (unsigned)pdfioFileGetNumPages(pdf));
 
@@ -922,8 +938,56 @@ main(int  argc,                         // I - Number of command-line arguments
 ```
 
 
-Create PDF File With Text and Image
+Extract Text from PDF File
------------------------------------
+--------------------------
+
+The `pdf2text.c` example code extracts non-Unicode text from a PDF file by
+scanning each page for strings and text drawing commands.  Since it doesn't
+look at the font encoding or support Unicode text, it is really only useful to
+extract plain ASCII text from a PDF file.  And since it writes text in the order
+it appears in the page stream, it may not come out in the same order as appears
+on the page.
+
+The [`pdfioStreamGetToken`](@@) function is used to read individual tokens from
+the page streams.  Tokens starting with the open parenthesis are text strings,
+while PDF operators are left as-is.  We use some simple logic to make sure that
+we include spaces between text strings and add newlines for the text operators
+that start a new line in a text block:
+
+```c
+pdfio_stream_t *st;              // Page stream
+bool           first = true;     // First string on line?
+char           buffer[1024];     // Token buffer
+
+// Read PDF tokens from the page stream...
+while (pdfioStreamGetToken(st, buffer, sizeof(buffer)))
+{
+  if (buffer[0] == '(')
+  {
+    // Text string using an 8-bit encoding
+    if (first)
+      first = false;
+    else if (buffer[1] != ' ')
+      putchar(' ');
+
+    fputs(buffer + 1, stdout);
+  }
+  else if (!strcmp(buffer, "Td") || !strcmp(buffer, "TD") || !strcmp(buffer, "T*") ||
+           !strcmp(buffer, "\'") || !strcmp(buffer, "\""))
+  {
+    // Text operators that advance to the next line in the block
+    putchar('\n');
+    first = true;
+  }
+}
+
+if (!first)
+  putchar('\n');
+```
+
+
+Create a PDF File With Text and an Image
+----------------------------------------
 
 The `image2pdf.c` example code creates a PDF file containing a JPEG or PNG
 image file and optional caption on a single page.  The `create_pdf_image_file`
@@ -1941,7 +2005,7 @@ if ((dd->y - need_bottom) < dd->art_box.y1)
 }
 ```
 
-We then loops through the fragments for the current line, drawing checkboxes,
+We then loop through the fragments for the current line, drawing checkboxes,
 images, and text as needed.  When a hyperlink is present, we add the link to the
 `links` array in the `docdata_t` structure, mapping "@" and "@@" to an internal
 link corresponding to the linked text:

examples/Makefile

@@ -1,7 +1,7 @@
 #
 # Makefile for PDFio examples.
 #
-# Copyright © 2024 by Michael R Sweet.
+# Copyright © 2024-2025 by Michael R Sweet.
 #
 # Licensed under Apache License v2.0.  See the file "LICENSE" for more
 # information.
@@ -12,10 +12,10 @@
 
 
 # Common options
-#CFLAGS		=	-g $(CPPFLAGS)
+CFLAGS		=	-g $(CPPFLAGS)
-CFLAGS		=	-g -fsanitize=address $(CPPFLAGS)
+#CFLAGS		=	-g -fsanitize=address $(CPPFLAGS)
-CPPFLAGS	=	-I..
+CPPFLAGS	=	-I.. -I/usr/local/include
-LIBS		=	-L.. -lpdfio -lz
+LIBS		=	-L.. -L/usr/local/lib -lpdfio -lz -lm
 
 
 # Targets
@@ -23,6 +23,7 @@ TARGETS		=	\
 			code128 \
 			image2pdf \
 			md2pdf \
+			pdf2text \
 			pdfioinfo
 
 
@@ -50,6 +51,11 @@ md2pdf:		md2pdf.c mmd.c mmd.h
 	$(CC) $(CFLAGS) -o $@ md2pdf.c mmd.c $(LIBS)
 
 
+# pdfio text extraction (demo, doesn't handle a lot of things yet)
+pdf2text:	pdf2text.c
+	$(CC) $(CFLAGS) -o $@ pdf2text.c $(LIBS)
+
+
 # pdfioinfo
 pdfioinfo:	pdfioinfo.c
 	$(CC) $(CFLAGS) -o $@ pdfioinfo.c $(LIBS)

examples/Roboto-LICENSE.txt

@@ -0,0 +1,93 @@
+Copyright 2011 The Roboto Project Authors (https://github.com/googlefonts/roboto-classic)
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at:
+https://openfontlicense.org
+
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded, 
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components,
+in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the corresponding
+Copyright Holder. This restriction only applies to the primary font name as
+presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created
+using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.

examples/code128-LICENSE.txt

@@ -0,0 +1,343 @@
+Copyright 2003 Grandzebu, All Rights Reserved
+
+http://grandzebu.net/informatique/codbar-en/code128.htm
+
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
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+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
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+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
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+in new free programs; and that you know you can do these things.
+
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+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.

examples/pdf2text.c

@@ -1,17 +1,17 @@
 //
 // PDF to text program for PDFio.
 //
-// Copyright © 2022 by Michael R Sweet.
+// Copyright © 2022-2024 by Michael R Sweet.
 //
 // Licensed under Apache License v2.0.  See the file "LICENSE" for more
 // information.
 //
 // Usage:
 //
-//   ./pdfiototext FILENAME.pdf > FILENAME.txt
+//   ./pdf2text FILENAME.pdf > FILENAME.txt
 //
 
-#include "pdfio.h"
+#include <pdfio.h>
 #include <string.h>
 
 
@@ -36,16 +36,14 @@ main(int  argc,				// I - Number of command-line arguments
   // Verify command-line arguments...
   if (argc != 2)
   {
-    puts("Usage: pdfiototext FILENAME.pdf > FILENAME.txt");
+    puts("Usage: pdf2text FILENAME.pdf > FILENAME.txt");
     return (1);
   }
 
   // Open the PDF file...
-  if ((file = pdfioFileOpen(argv[1], NULL, NULL, NULL, NULL)) == NULL)
+  if ((file = pdfioFileOpen(argv[1], /*password_cb*/NULL, /*password_data*/NULL, /*error_cb*/NULL, /*error_data*/NULL)) == NULL)
     return (1);
 
-//  printf("%s: %u pages\n", argv[1], (unsigned)pdfioFileGetNumPages(file));
-
   // Try grabbing content from all of the pages...
   for (i = 0, num_pages = pdfioFileGetNumPages(file); i < num_pages; i ++)
   {
@@ -54,29 +52,28 @@ main(int  argc,				// I - Number of command-line arguments
 
     num_streams = pdfioPageGetNumStreams(obj);
 
-//    printf("%s: page%u=%p, num_streams=%u\n", argv[1], (unsigned)i, obj, (unsigned)num_streams);
-
     for (j = 0; j < num_streams; j ++)
     {
       if ((st = pdfioPageOpenStream(obj, j, true)) == NULL)
 	continue;
 
-//      printf("%s: page%u st%u=%p\n", argv[1], (unsigned)i, (unsigned)j, st);
+      // Read PDF tokens from the page stream...
-
       first = true;
       while (pdfioStreamGetToken(st, buffer, sizeof(buffer)))
       {
 	if (buffer[0] == '(')
 	{
+          // Text string using an 8-bit encoding
 	  if (first)
 	    first = false;
-	  else
+	  else if (buffer[1] != ' ')
 	    putchar(' ');
 
 	  fputs(buffer + 1, stdout);
 	}
 	else if (!strcmp(buffer, "Td") || !strcmp(buffer, "TD") || !strcmp(buffer, "T*") || !strcmp(buffer, "\'") || !strcmp(buffer, "\""))
 	{
+	  // Text operators that advance to the next line in the block
 	  putchar('\n');
 	  first = true;
 	}

examples/pdfioinfo.c

@@ -1,7 +1,7 @@
 //
 // PDF metadata example for PDFio.
 //
-// Copyright © 2023-2024 by Michael R Sweet.
+// Copyright © 2023-2025 by Michael R Sweet.
 //
 // Licensed under Apache License v2.0.  See the file "LICENSE" for more
 // information.
@@ -25,9 +25,11 @@ main(int  argc,				// I - Number of command-line arguments
 {
   const char	*filename;		// PDF filename
   pdfio_file_t	*pdf;			// PDF file
+  const char	*author;		// Author name
   time_t	creation_date;		// Creation date
   struct tm	*creation_tm;		// Creation date/time information
   char		creation_text[256];	// Creation date/time as a string
+  const char	*title;			// Title
 
 
   // Get the filename from the command-line...
@@ -46,15 +48,25 @@ main(int  argc,				// I - Number of command-line arguments
   if (pdf == NULL)
     return (1);
 
+  // Get the title and author...
+  author = pdfioFileGetAuthor(pdf);
+  title  = pdfioFileGetTitle(pdf);
+
   // Get the creation date and convert to a string...
-  creation_date = pdfioFileGetCreationDate(pdf);
+  if ((creation_date = pdfioFileGetCreationDate(pdf)) > 0)
+  {
     creation_tm   = localtime(&creation_date);
     strftime(creation_text, sizeof(creation_text), "%c", creation_tm);
+  }
+  else
+  {
+    snprintf(creation_text, sizeof(creation_text), "-- not set --");
+  }
 
   // Print file information to stdout...
   printf("%s:\n", filename);
-  printf("         Title: %s\n", pdfioFileGetTitle(pdf));
+  printf("         Title: %s\n", title ? title : "-- not set --");
-  printf("        Author: %s\n", pdfioFileGetAuthor(pdf));
+  printf("        Author: %s\n", author ? author : "-- not set --");
   printf("    Created On: %s\n", creation_text);
   printf("  Number Pages: %u\n", (unsigned)pdfioFileGetNumPages(pdf));
 

makesrcdist

@@ -29,6 +29,15 @@ if test $(grep AC_INIT configure.ac | awk '{print $2}') != "[$version],"; then
     exit 1
 fi
 
+if test $(head -4 CHANGES.md | tail -1 | awk '{print $1}') != "v$version"; then
+    echo "Still need to update CHANGES.md version number."
+    exit 1
+fi
+if test $(head -4 CHANGES.md | tail -1 | awk '{print $3}') = "YYYY-MM-DD"; then
+    echo "Still need to update CHANGES.md release date."
+    exit 1
+fi
+
 if test $(grep PDFIO_VERSION= configure | awk -F \" '{print $2}') != "$version"; then
     echo "Still need to run 'autoconf -f'."
     exit 1

pdfio-common.c

@@ -1,7 +1,7 @@
 //
 // Common support functions for pdfio.
 //
-// Copyright © 2021-2024 by Michael R Sweet.
+// Copyright © 2021-2025 by Michael R Sweet.
 //
 // Licensed under Apache License v2.0.  See the file "LICENSE" for more
 // information.
@@ -368,7 +368,7 @@ _pdfioFileSeek(pdfio_file_t *pdf,	// I - PDF file
   if (pdf->mode == _PDFIO_MODE_READ)
   {
     // Reading, see if we already have the data we need...
-    if (whence != SEEK_END && offset >= pdf->bufpos && offset < (pdf->bufpos + pdf->bufend - pdf->buffer))
+    if (whence != SEEK_END && offset >= pdf->bufpos && pdf->bufend && offset < (pdf->bufpos + pdf->bufend - pdf->buffer))
     {
       // Yes, seek within existing buffer...
       pdf->bufptr = pdf->buffer + (offset - pdf->bufpos);
@@ -398,7 +398,10 @@ _pdfioFileSeek(pdfio_file_t *pdf,	// I - PDF file
   }
 
   // Seek within the file...
-  if ((offset = lseek(pdf->fd, offset, whence)) < 0)
+  if ((offset = lseek(pdf->fd, offset, whence)) < 0 && whence == SEEK_END && errno == EINVAL)
+    offset = lseek(pdf->fd, 0, SEEK_SET);
+
+  if (offset < 0)
   {
     _pdfioFileError(pdf, "Unable to seek within file - %s", strerror(errno));
     return (-1);

pdfio-content.c

@@ -1132,7 +1132,7 @@ pdfioContentTextMeasure(
 	  }
 
 	  if (i < (sizeof(_pdfio_cp1252) / sizeof(_pdfio_cp1252[0])))
-	    ch = i + 0x80;		// Extra characters from 0x80 to 0x9f
+	    ch = (int)(i + 0x80);	// Extra characters from 0x80 to 0x9f
 	  else
 	    ch = '?';			// Unsupported chars map to ?
 	}

pdfio-dict.c

@@ -465,10 +465,134 @@ pdfioDictGetString(pdfio_dict_t *dict,	// I - Dictionary
   else if (value && value->type == PDFIO_VALTYPE_BINARY && value->value.binary.datalen < 4096)
   {
     // Convert binary string to regular string...
-    char	temp[4096];		// Temporary string
+    char	temp[4096],		// Temporary string
+		*tempptr;		// Pointer into temporary string
+    unsigned char *dataptr;		// Pointer into the data string
 
+    if (!(value->value.binary.datalen & 1) && !memcmp(value->value.binary.data, "\377\376", 2))
+    {
+      // Copy UTF-16 BE
+      int	ch;			// Unicode character
+      size_t	remaining;		// Remaining bytes
+
+      for (dataptr = value->value.binary.data + 2, remaining = value->value.binary.datalen - 2, tempptr = temp; remaining > 1 && tempptr < (temp + sizeof(temp) - 5); dataptr += 2, remaining -= 2)
+      {
+        ch = (dataptr[0] << 8) | dataptr[1];
+
+        if (ch >= 0xd800 && ch <= 0xdbff && remaining > 3)
+	{
+	  // Multi-word UTF-16 char...
+          int lch;			// Lower bits
+
+	  lch = (dataptr[2] << 8) | dataptr[3];
+
+          if (lch < 0xdc00 || lch >= 0xdfff)
+	    break;
+
+          ch        = (((ch & 0x3ff) << 10) | (lch & 0x3ff)) + 0x10000;
+          dataptr   += 2;
+          remaining -= 2;
+	}
+	else if (ch >= 0xfffe)
+	{
+	  continue;
+	}
+
+        if (ch < 128)
+        {
+          // ASCII
+          *tempptr++ = (char)ch;
+        }
+        else if (ch < 4096)
+        {
+          // 2-byte UTF-8
+          *tempptr++ = (char)(0xc0 | (ch >> 6));
+          *tempptr++ = (char)(0x80 | (ch & 0x3f));
+        }
+        else if (ch < 65536)
+        {
+          // 3-byte UTF-8
+          *tempptr++ = (char)(0xe0 | (ch >> 12));
+          *tempptr++ = (char)(0x80 | ((ch >> 6) & 0x3f));
+          *tempptr++ = (char)(0x80 | (ch & 0x3f));
+        }
+        else
+        {
+          // 4-byte UTF-8
+          *tempptr++ = (char)(0xe0 | (ch >> 18));
+          *tempptr++ = (char)(0x80 | ((ch >> 12) & 0x3f));
+          *tempptr++ = (char)(0x80 | ((ch >> 6) & 0x3f));
+          *tempptr++ = (char)(0x80 | (ch & 0x3f));
+        }
+      }
+
+      *tempptr = '\0';
+    }
+    else if (!(value->value.binary.datalen & 1) && !memcmp(value->value.binary.data, "\376\377", 2))
+    {
+      // Copy UTF-16 LE
+      int	ch;			// Unicode character
+      size_t	remaining;		// Remaining bytes
+
+      for (dataptr = value->value.binary.data + 2, remaining = value->value.binary.datalen - 2, tempptr = temp; remaining > 1 && tempptr < (temp + sizeof(temp) - 5); dataptr += 2, remaining -= 2)
+      {
+        ch = (dataptr[1] << 8) | dataptr[0];
+
+        if (ch >= 0xd800 && ch <= 0xdbff && remaining > 3)
+	{
+	  // Multi-word UTF-16 char...
+          int lch;			// Lower bits
+
+	  lch = (dataptr[3] << 8) | dataptr[2];
+
+          if (lch < 0xdc00 || lch >= 0xdfff)
+	    break;
+
+          ch        = (((ch & 0x3ff) << 10) | (lch & 0x3ff)) + 0x10000;
+          dataptr   += 2;
+          remaining -= 2;
+	}
+	else if (ch >= 0xfffe)
+	{
+	  continue;
+	}
+
+        if (ch < 128)
+        {
+          // ASCII
+          *tempptr++ = (char)ch;
+        }
+        else if (ch < 4096)
+        {
+          // 2-byte UTF-8
+          *tempptr++ = (char)(0xc0 | (ch >> 6));
+          *tempptr++ = (char)(0x80 | (ch & 0x3f));
+        }
+        else if (ch < 65536)
+        {
+          // 3-byte UTF-8
+          *tempptr++ = (char)(0xe0 | (ch >> 12));
+          *tempptr++ = (char)(0x80 | ((ch >> 6) & 0x3f));
+          *tempptr++ = (char)(0x80 | (ch & 0x3f));
+        }
+        else
+        {
+          // 4-byte UTF-8
+          *tempptr++ = (char)(0xe0 | (ch >> 18));
+          *tempptr++ = (char)(0x80 | ((ch >> 12) & 0x3f));
+          *tempptr++ = (char)(0x80 | ((ch >> 6) & 0x3f));
+          *tempptr++ = (char)(0x80 | (ch & 0x3f));
+        }
+      }
+
+      *tempptr = '\0';
+    }
+    else
+    {
+      // Copy as-is...
       memcpy(temp, value->value.binary.data, value->value.binary.datalen);
       temp[value->value.binary.datalen] = '\0';
+    }
 
     free(value->value.binary.data);
     value->type         = PDFIO_VALTYPE_STRING;

pdfio-file.c

@@ -1,7 +1,7 @@
 //
 // PDF file functions for PDFio.
 //
-// Copyright © 2021-2024 by Michael R Sweet.
+// Copyright © 2021-2025 by Michael R Sweet.
 //
 // Licensed under Apache License v2.0.  See the file "LICENSE" for more
 // information.
@@ -1517,6 +1517,7 @@ load_obj_stream(pdfio_obj_t *obj)	// I - Object to load
 			cur_obj,	// Current object
 			num_objs = 0;	// Number of objects
   pdfio_obj_t		*objs[16384];	// Objects
+  int			count;		// Count of objects
 
 
   PDFIO_DEBUG("load_obj_stream(obj=%p(%d))\n", obj, (int)obj->number);
@@ -1528,12 +1529,17 @@ load_obj_stream(pdfio_obj_t *obj)	// I - Object to load
     return (false);
   }
 
+  count = (int)pdfioDictGetNumber(pdfioObjGetDict(obj), "N");
+
+  PDFIO_DEBUG("load_obj_stream: N=%d\n", count);
+
   _pdfioTokenInit(&tb, obj->pdf, (_pdfio_tconsume_cb_t)pdfioStreamConsume, (_pdfio_tpeek_cb_t)pdfioStreamPeek, st);
 
   // Read the object numbers from the beginning of the stream...
-  while (_pdfioTokenGet(&tb, buffer, sizeof(buffer)))
+  while (count > 0 && _pdfioTokenGet(&tb, buffer, sizeof(buffer)))
   {
     // Stop if this isn't an object number...
+    PDFIO_DEBUG("load_obj_stream: %s\n", buffer);
     if (!isdigit(buffer[0] & 255))
       break;
 
@@ -1556,21 +1562,19 @@ load_obj_stream(pdfio_obj_t *obj)	// I - Object to load
     // Skip offset
     _pdfioTokenGet(&tb, buffer, sizeof(buffer));
     PDFIO_DEBUG("load_obj_stream: %ld at offset %s\n", (long)number, buffer);
+
+    // One less compressed object...
+    count --;
   }
 
-  if (!buffer[0])
+  PDFIO_DEBUG("load_obj_stream: num_objs=%lu\n", (unsigned long)num_objs);
-  {
-    pdfioStreamClose(st);
-    return (false);
-  }
-
-  _pdfioTokenPush(&tb, buffer);
 
   // Read the objects themselves...
   for (cur_obj = 0; cur_obj < num_objs; cur_obj ++)
   {
     if (!_pdfioValueRead(obj->pdf, obj, &tb, &(objs[cur_obj]->value), 0))
     {
+      _pdfioFileError(obj->pdf, "Unable to read compressed object.");
       pdfioStreamClose(st);
       return (false);
     }
@@ -1720,7 +1724,7 @@ load_xref(
       pdfio_stream_t	*st;		// Stream
       unsigned char	buffer[32];	// Read buffer
       size_t		num_sobjs = 0,	// Number of object streams
-			sobjs[8192];	// Object streams to load
+			sobjs[16384];	// Object streams to load
       pdfio_obj_t	*current;	// Current object
 
       if ((number = strtoimax(line, &ptr, 10)) < 1)
@@ -1938,7 +1942,6 @@ load_xref(
 	// Save the trailer dictionary and grab the root (catalog) and info
 	// objects...
 	pdf->trailer_dict = trailer.value.dict;
-	pdf->info_obj     = pdfioDictGetObj(pdf->trailer_dict, "Info");
 	pdf->encrypt_obj  = pdfioDictGetObj(pdf->trailer_dict, "Encrypt");
 	pdf->id_array     = pdfioDictGetArray(pdf->trailer_dict, "ID");
 
@@ -2086,7 +2089,6 @@ load_xref(
 	// Save the trailer dictionary and grab the root (catalog) and info
 	// objects...
 	pdf->trailer_dict = trailer.value.dict;
-	pdf->info_obj     = pdfioDictGetObj(pdf->trailer_dict, "Info");
 	pdf->encrypt_obj  = pdfioDictGetObj(pdf->trailer_dict, "Encrypt");
 	pdf->id_array     = pdfioDictGetArray(pdf->trailer_dict, "ID");
 
@@ -2123,6 +2125,8 @@ load_xref(
 
   // Once we have all of the xref tables loaded, get the important objects and
   // build the pages array...
+  pdf->info_obj = pdfioDictGetObj(pdf->trailer_dict, "Info");
+
   if ((pdf->root_obj = pdfioDictGetObj(pdf->trailer_dict, "Root")) == NULL)
   {
     _pdfioFileError(pdf, "Missing Root object.");

pdfio.h

@@ -1,7 +1,7 @@
 //
 // Public header file for PDFio.
 //
-// Copyright © 2021-2024 by Michael R Sweet.
+// Copyright © 2021-2025 by Michael R Sweet.
 //
 // Licensed under Apache License v2.0.  See the file "LICENSE" for more
 // information.
@@ -23,7 +23,7 @@ extern "C" {
 // Version number...
 //
 
-#  define PDFIO_VERSION		"1.4.0"
+#  define PDFIO_VERSION		"1.4.1"
 
 
 //

pdfio.xcodeproj/project.pbxproj

@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 50;
+	objectVersion = 54;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -31,6 +31,7 @@
 		27F2F0612710BE92008ECD36 /* pdfio-rc4.c in Sources */ = {isa = PBXBuildFile; fileRef = 27F2F05E2710BE92008ECD36 /* pdfio-rc4.c */; };
 		27F2F0622710BE92008ECD36 /* pdfio-crypto.c in Sources */ = {isa = PBXBuildFile; fileRef = 27F2F05F2710BE92008ECD36 /* pdfio-crypto.c */; };
 		27F2F0642711243D008ECD36 /* pdfio-sha256.c in Sources */ = {isa = PBXBuildFile; fileRef = 27F2F0632711243D008ECD36 /* pdfio-sha256.c */; };
+		27FCBDE42D19F9B300485EEE /* pdfio-base-font-widths.h in Headers */ = {isa = PBXBuildFile; fileRef = 27FCBDE32D19F9B300485EEE /* pdfio-base-font-widths.h */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -89,6 +90,7 @@
 		27F2F05E2710BE92008ECD36 /* pdfio-rc4.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = "pdfio-rc4.c"; sourceTree = "<group>"; };
 		27F2F05F2710BE92008ECD36 /* pdfio-crypto.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = "pdfio-crypto.c"; sourceTree = "<group>"; };
 		27F2F0632711243D008ECD36 /* pdfio-sha256.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = "pdfio-sha256.c"; sourceTree = "<group>"; };
+		27FCBDE32D19F9B300485EEE /* pdfio-base-font-widths.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "pdfio-base-font-widths.h"; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -162,6 +164,7 @@
 			children = (
 				27CF90432711DFFE00E50FE4 /* pdfio-aes.c */,
 				273440BA263D727800FBFD63 /* pdfio-array.c */,
+				27FCBDE32D19F9B300485EEE /* pdfio-base-font-widths.h */,
 				273440BB263D727800FBFD63 /* pdfio-common.c */,
 				271EA703265B2B1000ACDD39 /* pdfio-content.c */,
 				27F2F05F2710BE92008ECD36 /* pdfio-crypto.c */,
@@ -205,6 +208,7 @@
 			isa = PBXHeadersBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				27FCBDE42D19F9B300485EEE /* pdfio-base-font-widths.h in Headers */,
 				273440CC263D727800FBFD63 /* pdfio.h in Headers */,
 				271EA706265B2B1000ACDD39 /* pdfio-content.h in Headers */,
 				273440C3263D727800FBFD63 /* pdfio-private.h in Headers */,
@@ -256,7 +260,8 @@
 		273440A8263D6FE200FBFD63 /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 1300;
+				BuildIndependentTargetsInParallel = YES;
+				LastUpgradeCheck = 1600;
 				TargetAttributes = {
 					273440AF263D6FE200FBFD63 = {
 						CreatedOnToolsVersion = 12.5;
@@ -373,9 +378,11 @@
 				CODE_SIGN_IDENTITY = "Apple Development";
 				COPY_PHASE_STRIP = NO;
 				CURRENT_PROJECT_VERSION = 1.1.2;
+				DEAD_CODE_STRIPPING = YES;
 				DEBUG_INFORMATION_FORMAT = dwarf;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				ENABLE_TESTABILITY = YES;
+				ENABLE_USER_SCRIPT_SANDBOXING = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				GCC_NO_COMMON_BLOCKS = YES;
 				GCC_PREPROCESSOR_DEFINITIONS = (
@@ -450,15 +457,15 @@
 				CODE_SIGN_IDENTITY = "Apple Development";
 				COPY_PHASE_STRIP = NO;
 				CURRENT_PROJECT_VERSION = 1.1.2;
+				DEAD_CODE_STRIPPING = YES;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				ENABLE_HARDENED_RUNTIME = YES;
 				ENABLE_NS_ASSERTIONS = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_USER_SCRIPT_SANDBOXING = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				GCC_NO_COMMON_BLOCKS = YES;
-				GCC_PREPROCESSOR_DEFINITIONS = (
+				GCC_PREPROCESSOR_DEFINITIONS = "$(inherited)";
-					"$(inherited)",
-				);
 				GCC_TREAT_IMPLICIT_FUNCTION_DECLARATIONS_AS_ERRORS = YES;
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
 				GCC_WARN_ABOUT_MISSING_FIELD_INITIALIZERS = YES;
@@ -486,6 +493,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CODE_SIGN_STYLE = Automatic;
+				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_TEAM = RU58A2256H;
 				EXECUTABLE_PREFIX = lib;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -497,6 +505,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CODE_SIGN_STYLE = Automatic;
+				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_TEAM = RU58A2256H;
 				EXECUTABLE_PREFIX = lib;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -509,6 +518,7 @@
 			buildSettings = {
 				CODE_SIGN_IDENTITY = "-";
 				CODE_SIGN_STYLE = Automatic;
+				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_TEAM = "";
 				ENABLE_HARDENED_RUNTIME = YES;
 				GCC_DYNAMIC_NO_PIC = NO;
@@ -525,6 +535,7 @@
 			buildSettings = {
 				CODE_SIGN_IDENTITY = "-";
 				CODE_SIGN_STYLE = Automatic;
+				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_TEAM = "";
 				ENABLE_HARDENED_RUNTIME = YES;
 				MACOSX_DEPLOYMENT_TARGET = 11.0;

pdfio_native.nuspec

@@ -3,7 +3,7 @@
     <metadata>
         <id>pdfio_native</id>
         <title>PDFio Library for VS2019+</title>
-        <version>1.3.2</version>
+        <version>1.4.1</version>
         <authors>Michael R Sweet</authors>
         <owners>michaelrsweet</owners>
         <projectUrl>https://github.com/michaelrsweet/pappl</projectUrl>
@@ -13,10 +13,10 @@
         <requireLicenseAcceptance>false</requireLicenseAcceptance>
         <description>PDFio Library for VS2019+</description>
         <summary>PDFio is a simple C library for reading and writing PDF files. PDFio is licensed under the Apache License Version 2.0 with an (optional) exception to allow linking against GNU GPL2-only software.</summary>
-        <copyright>Copyright © 2019-2024 by Michael R Sweet</copyright>
+        <copyright>Copyright © 2019-2025 by Michael R Sweet</copyright>
         <tags>pdf file native</tags>
 	<dependencies>
-	    <dependency id="pdfio_native.redist" version="1.3.2" />
+	    <dependency id="pdfio_native.redist" version="1.4.1" />
 	    <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>1.3.2</version>
+        <version>1.4.1</version>
         <authors>Michael R Sweet</authors>
         <owners>michaelrsweet</owners>
         <projectUrl>https://github.com/michaelrsweet/pappl</projectUrl>
@@ -13,7 +13,7 @@
         <requireLicenseAcceptance>false</requireLicenseAcceptance>
         <description>PDFio Library for VS2019+</description>
         <summary>PDFio is a simple C library for reading and writing PDF files. This package provides the redistributable content for the PDFio library. PDFio is licensed under the Apache License Version 2.0 with an (optional) exception to allow linking against GNU GPL2-only software.</summary>
-        <copyright>Copyright © 2019-2024 by Michael R Sweet</copyright>
+        <copyright>Copyright © 2019-2025 by Michael R Sweet</copyright>
         <tags>pdf file native</tags>
 	<dependencies>
 	    <dependency id="zlib_native.redist" version="1.2.11" />

testfiles/iso22028-2-romm-rgb.txt

@@ -1,3 +1,7 @@
+https://www.color.org/chardata/rgb/rommrgb.xalter
+
+Copyright © 2006 Hewlett-Packard
+
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