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v1.3.2
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4
.gitignore
vendored
4
.gitignore
vendored
@ -1,5 +1,6 @@
|
||||
*.1.dylib
|
||||
*.a
|
||||
*.dSYM
|
||||
*.log
|
||||
*.o
|
||||
*.so.1
|
||||
@ -8,7 +9,10 @@
|
||||
/autom4te.cache
|
||||
/config.log
|
||||
/config.status
|
||||
/configure~
|
||||
/doc/pdfio.epub
|
||||
/examples/code128
|
||||
/examples/md2pdf
|
||||
/Makefile
|
||||
/packages
|
||||
/pdfio.pc
|
||||
|
||||
14
CHANGES.md
14
CHANGES.md
@ -2,6 +2,20 @@ Changes in PDFio
|
||||
================
|
||||
|
||||
|
||||
v1.4.0 - YYYY-MM-DD
|
||||
-------------------
|
||||
|
||||
- Added new `pdfioDictGetKey` and `pdfioDictGetNumPairs` APIs (Issue #63)
|
||||
- Added new `pdfioArrayRemove` and `pdfioDictClear` APIs (Issue #74)
|
||||
- Added new `pdfioFileCreateNameObj` and `pdfioObjGetName` APIs for creating and
|
||||
getting name object values (Issue #76)
|
||||
- Updated documentation (Issue #78)
|
||||
- Updated `pdfioContentTextMeasure` to support measuring PDF base fonts created
|
||||
with `pdfioFileCreateFontObjFromBase` (Issue #84)
|
||||
- Fixed reading of PDF files whose trailer is missing a newline (Issue #80)
|
||||
- Fixed builds with some versions of VC++ (Issue #81)
|
||||
|
||||
|
||||
v1.3.2 - 2024-08-15
|
||||
-------------------
|
||||
|
||||
|
||||
18
EXAMPLES.md
Normal file
18
EXAMPLES.md
Normal file
@ -0,0 +1,18 @@
|
||||
PDFio Examples
|
||||
==============
|
||||
|
||||
The "examples" subdirectory contains example code showing how to do different
|
||||
things with PDFio.
|
||||
|
||||
|
||||
code128.c
|
||||
---------
|
||||
|
||||
This example shows how to embed and use a barcode font.
|
||||
|
||||
|
||||
md2pdf.c
|
||||
--------
|
||||
|
||||
This example shows how to generate pages with multiple fonts, embedded images,
|
||||
and headers and footers.
|
||||
@ -258,5 +258,5 @@ clang:
|
||||
|
||||
# Analyze code using Cppcheck <http://cppcheck.sourceforge.net>
|
||||
cppcheck:
|
||||
cppcheck $(CPPFLAGS) --template=gcc --addon=cert.py --suppressions-list=.cppcheck $(OBJS:.o=.c) 2>cppcheck.log
|
||||
cppcheck $(CPPFLAGS) --template=gcc --suppressions-list=.cppcheck $(OBJS:.o=.c) 2>cppcheck.log
|
||||
test -s cppcheck.log && (echo "$(GHA_ERROR)Cppcheck detected issues."; echo ""; cat cppcheck.log; exit 1) || exit 0
|
||||
|
||||
24
configure
vendored
24
configure
vendored
@ -1,6 +1,6 @@
|
||||
#! /bin/sh
|
||||
# Guess values for system-dependent variables and create Makefiles.
|
||||
# Generated by GNU Autoconf 2.71 for pdfio 1.3.2.
|
||||
# Generated by GNU Autoconf 2.71 for pdfio 1.4.0.
|
||||
#
|
||||
# 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='1.3.2'
|
||||
PACKAGE_STRING='pdfio 1.3.2'
|
||||
PACKAGE_VERSION='1.4.0'
|
||||
PACKAGE_STRING='pdfio 1.4.0'
|
||||
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 1.3.2 to adapt to many kinds of systems.
|
||||
\`configure' configures pdfio 1.4.0 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 $ac_init_help in
|
||||
short | recursive ) echo "Configuration of pdfio 1.3.2:";;
|
||||
short | recursive ) echo "Configuration of pdfio 1.4.0:";;
|
||||
esac
|
||||
cat <<\_ACEOF
|
||||
|
||||
@ -1456,7 +1456,7 @@ fi
|
||||
test -n "$ac_init_help" && exit $ac_status
|
||||
if $ac_init_version; then
|
||||
cat <<\_ACEOF
|
||||
pdfio configure 1.3.2
|
||||
pdfio configure 1.4.0
|
||||
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 1.3.2, which was
|
||||
It was created by pdfio $as_me 1.4.0, 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="1.3.2"
|
||||
PDFIO_VERSION_MAJOR="`echo 1.3.2 | awk -F. '{print $1}'`"
|
||||
PDFIO_VERSION_MINOR="`echo 1.3.2 | awk -F. '{printf("%d\n",$2);}'`"
|
||||
PDFIO_VERSION="1.4.0"
|
||||
PDFIO_VERSION_MAJOR="`echo 1.4.0 | awk -F. '{print $1}'`"
|
||||
PDFIO_VERSION_MINOR="`echo 1.4.0 | 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 1.3.2, which was
|
||||
This file was extended by pdfio $as_me 1.4.0, 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 1.3.2
|
||||
pdfio config.status 1.4.0
|
||||
configured by $0, generated by GNU Autoconf 2.71,
|
||||
with options \\"\$ac_cs_config\\"
|
||||
|
||||
|
||||
@ -21,7 +21,7 @@ AC_PREREQ([2.70])
|
||||
|
||||
|
||||
dnl Package name and version...
|
||||
AC_INIT([pdfio], [1.3.2], [https://github.com/michaelrsweet/pdfio/issues], [pdfio], [https://www.msweet.org/pdfio])
|
||||
AC_INIT([pdfio], [1.4.0], [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}'`"
|
||||
|
||||
172
doc/pdfio.3
172
doc/pdfio.3
@ -1,4 +1,4 @@
|
||||
.TH pdfio 3 "pdf read/write library" "2024-10-09" "pdf read/write library"
|
||||
.TH pdfio 3 "pdf read/write library" "2024-10-25" "pdf read/write library"
|
||||
.SH NAME
|
||||
pdfio \- pdf read/write library
|
||||
.SH Introduction
|
||||
@ -138,6 +138,121 @@ PDFio also provides PDF content helper functions for producing PDF content that
|
||||
|
||||
#include <pdfio\-content.h>
|
||||
.fi
|
||||
.SS Understanding PDF Files
|
||||
.PP
|
||||
A PDF file provides data and commands for displaying pages of graphics and text, and is structured in a way that allows it to be displayed in the same way across multiple devices and platforms. The following is a PDF which shows "Hello, World!" on one page:
|
||||
.nf
|
||||
|
||||
%PDF\-1.0 % Header starts here
|
||||
%âãÏÓ
|
||||
1 0 obj % Body starts here
|
||||
<<
|
||||
/Kids [2 0 R]
|
||||
/Count 1
|
||||
/Type /Pages
|
||||
.fi
|
||||
.PP
|
||||
> endobj 2 0 obj <
|
||||
/Rotate 0
|
||||
/Parent 1 0 R
|
||||
/Resources 3 0 R
|
||||
/MediaBox [0 0 612 792]
|
||||
/Contents [4 0 R]/Type /Page
|
||||
endobj 3 0 obj <
|
||||
/Font
|
||||
<<
|
||||
/F0
|
||||
<<
|
||||
/BaseFont /Times\-Italic
|
||||
/Subtype /Type1
|
||||
/Type /Font
|
||||
> > endobj 4 0 obj <
|
||||
/Length 65
|
||||
stream
|
||||
|
||||
.IP \(bu 5
|
||||
.PP
|
||||
0. 0. 1. 50. 700. cm BT /F0 36. Tf (Hello, World!) Tj ET endstream endobj 5 0 obj << /Pages 1 0 R /Type /Catalog
|
||||
|
||||
|
||||
.PP
|
||||
> endobj xref % Cross\-reference table starts here 0 6 0000000000 65535 f 0000000015 00000 n 0000000074 00000 n 0000000192 00000 n 0000000291 00000 n 0000000409 00000 n trailer % Trailer starts here << /Root 5 0 R /Size 6 > startxref 459 %%EOF
|
||||
.nf
|
||||
|
||||
.fi
|
||||
|
||||
.PP
|
||||
Header
|
||||
.PP
|
||||
The header is the first line of a PDF file that specifies the version of the PDF format that has been used, for example %PDF\-1.0\.
|
||||
.PP
|
||||
Since PDF files almost always contain binary data, they can become corrupted if line endings are changed. For example, if the file is transferred using FTP in text mode or is edited in Notepad on Windows. To allow legacy file transfer programs to determine that the file is binary, the PDF standard recommends including some bytes with character codes higher than 127 in the header, for example:
|
||||
.nf
|
||||
|
||||
%âãÏÓ
|
||||
.fi
|
||||
.PP
|
||||
The percent sign indicates a comment line while the other few bytes are arbitrary character codes in excess of 127. So, the whole header in our example is:
|
||||
.nf
|
||||
|
||||
%PDF\-1.0
|
||||
%âãÏÓ
|
||||
.fi
|
||||
.PP
|
||||
Body
|
||||
.PP
|
||||
The file body consists of a sequence of objects, each preceded by an object number, generation number, and the obj keyword on one line, and followed by the endobj keyword on another. For example:
|
||||
.nf
|
||||
|
||||
1 0 obj
|
||||
<<
|
||||
/Kids [2 0 R]
|
||||
/Count 1
|
||||
/Type /Pages
|
||||
.fi
|
||||
.PP
|
||||
> endobj
|
||||
.nf
|
||||
|
||||
.fi
|
||||
|
||||
.PP
|
||||
In this example, the object number is 1 and the generation number is 0, meaning it is the first version of the object. The content for object 1 is between the initial 1 0 obj and trailing endobj lines. In this case, the content is the dictionary <</Kids [2 0 R] /Count 1 /Type /Pages>>\.
|
||||
.PP
|
||||
Cross\-Reference Table
|
||||
.PP
|
||||
The cross\-reference table lists the byte offset of each object in the file body. This allows random access to objects, meaning they don't have to be read in order. Objects that are not used are never read, making the process efficient. Operations like counting the number of pages in a PDF document are fast, even in large files.
|
||||
.PP
|
||||
Each object has an object number and a generation number. Generation numbers are used when a cross\-reference table entry is reused. For simplicity, we will assume generation numbers to be always zero and ignore them. The cross\-reference table consists of a header line that indicates the number of entries, a free entry line for object 0, and a line for each of the objects in the file body. For example:
|
||||
.nf
|
||||
|
||||
0 6 % Six entries in table, starting at 0
|
||||
0000000000 65535 f % Free entry for object 0
|
||||
0000000015 00000 n % Object 1 is at byte offset 15
|
||||
0000000074 00000 n % Object 2 is at byte offset 74
|
||||
0000000192 00000 n % etc...
|
||||
0000000291 00000 n
|
||||
0000000409 00000 n % Object 5 is at byte offset 409
|
||||
.fi
|
||||
.PP
|
||||
Trailer
|
||||
.PP
|
||||
The first line of the trailer is just the trailer keyword. This is followed by the trailer dictionary which contains at least the /Size entry specifying the number of entries in the cross\-reference table and the /Root entry which references the object for the document catalog which is the root element of the graph of objects in the body.
|
||||
.PP
|
||||
There follows a line with just the startxref keyword, a line with a single number specifying the byte offset of the start of the cross\-reference table within the file, and then the line %%EOF which signals the end of the PDF file.
|
||||
.nf
|
||||
|
||||
trailer % Trailer keyword
|
||||
<< % The trailer dictinonary
|
||||
/Root 5 0 R
|
||||
/Size 6
|
||||
.fi
|
||||
.PP
|
||||
> startxref % startxref keyword 459 % Byte offset of cross\-reference table %%EOF % End\-of\-file marker
|
||||
.nf
|
||||
|
||||
.fi
|
||||
|
||||
.SH API Overview
|
||||
.PP
|
||||
PDFio exposes several types:
|
||||
@ -1487,6 +1602,15 @@ pdfio_valtype_t pdfioArrayGetType (
|
||||
size_t n
|
||||
);
|
||||
.fi
|
||||
.SS pdfioArrayRemove
|
||||
Remove an array entry.
|
||||
.PP
|
||||
.nf
|
||||
bool pdfioArrayRemove (
|
||||
pdfio_array_t *a,
|
||||
size_t n
|
||||
);
|
||||
.fi
|
||||
.SS pdfioContentClip
|
||||
Clip output to the current path.
|
||||
.PP
|
||||
@ -2067,6 +2191,15 @@ bool pdfioContentTextShowf (
|
||||
...
|
||||
);
|
||||
.fi
|
||||
.SS pdfioDictClear
|
||||
Remove a key/value pair from a dictionary.
|
||||
.PP
|
||||
.nf
|
||||
bool pdfioDictClear (
|
||||
pdfio_dict_t *dict,
|
||||
const char *key
|
||||
);
|
||||
.fi
|
||||
.SS pdfioDictCopy
|
||||
Copy a dictionary to a PDF file.
|
||||
.PP
|
||||
@ -2130,6 +2263,15 @@ pdfio_dict_t * pdfioDictGetDict (
|
||||
const char *key
|
||||
);
|
||||
.fi
|
||||
.SS pdfioDictGetKey
|
||||
Get the key for the specified pair.
|
||||
.PP
|
||||
.nf
|
||||
const char * pdfioDictGetKey (
|
||||
pdfio_dict_t *dict,
|
||||
size_t n
|
||||
);
|
||||
.fi
|
||||
.SS pdfioDictGetName
|
||||
Get a key name value from a dictionary.
|
||||
.PP
|
||||
@ -2139,6 +2281,14 @@ const char * pdfioDictGetName (
|
||||
const char *key
|
||||
);
|
||||
.fi
|
||||
.SS pdfioDictGetNumPairs
|
||||
Get the number of key/value pairs in a dictionary.
|
||||
.PP
|
||||
.nf
|
||||
size_t pdfioDictGetNumPairs (
|
||||
pdfio_dict_t *dict
|
||||
);
|
||||
.fi
|
||||
.SS pdfioDictGetNumber
|
||||
Get a key number value from a dictionary.
|
||||
.PP
|
||||
@ -2500,6 +2650,18 @@ Note: Currently PNG support is limited to grayscale, RGB, or indexed files
|
||||
without interlacing or alpha. Transparency (masking) based on color/index
|
||||
.IP 5
|
||||
is supported.
|
||||
.SS pdfioFileCreateNameObj
|
||||
Create a new object in a PDF file containing a name.
|
||||
.PP
|
||||
.nf
|
||||
pdfio_obj_t * pdfioFileCreateNameObj (
|
||||
pdfio_file_t *pdf,
|
||||
const char *name
|
||||
);
|
||||
.fi
|
||||
.PP
|
||||
This function creates a new object with a name value in a PDF file.
|
||||
You must call \fIpdfioObjClose\fR to write the object to the file.
|
||||
.SS pdfioFileCreateNumberObj
|
||||
Create a new object in a PDF file containing a number.
|
||||
.PP
|
||||
@ -2936,6 +3098,14 @@ size_t pdfioObjGetLength (
|
||||
pdfio_obj_t *obj
|
||||
);
|
||||
.fi
|
||||
.SS pdfioObjGetName
|
||||
Get the name value associated with an object.
|
||||
.PP
|
||||
.nf
|
||||
const char * pdfioObjGetName (
|
||||
pdfio_obj_t *obj
|
||||
);
|
||||
.fi
|
||||
.SS pdfioObjGetNumber
|
||||
Get the object's number.
|
||||
.PP
|
||||
|
||||
188
doc/pdfio.html
188
doc/pdfio.html
@ -1,13 +1,13 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="en-US">
|
||||
<head>
|
||||
<title>PDFio Programming Manual v1.3.2</title>
|
||||
<title>PDFio Programming Manual v1.4.0</title>
|
||||
<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
|
||||
<meta name="generator" content="codedoc v3.7">
|
||||
<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="version" content="1.3.2">
|
||||
<meta name="version" content="1.4.0">
|
||||
<style type="text/css"><!--
|
||||
body {
|
||||
background: white;
|
||||
@ -251,7 +251,7 @@ span.string {
|
||||
<body>
|
||||
<div class="header">
|
||||
<p><img class="title" src="pdfio-512.png"></p>
|
||||
<h1 class="title">PDFio Programming Manual v1.3.2</h1>
|
||||
<h1 class="title">PDFio Programming Manual v1.4.0</h1>
|
||||
<p>Michael R Sweet</p>
|
||||
<p>Copyright © 2021-2024 by Michael R Sweet</p>
|
||||
</div>
|
||||
@ -265,6 +265,7 @@ span.string {
|
||||
<li><a href="#xcode-project">Xcode Project</a></li>
|
||||
<li><a href="#detecting-pdfio">Detecting PDFio</a></li>
|
||||
<li><a href="#header-files">Header Files</a></li>
|
||||
<li><a href="#understanding-pdf-files">Understanding PDF Files</a></li>
|
||||
</ul></li>
|
||||
<li><a href="#api-overview">API Overview</a><ul class="subcontents">
|
||||
<li><a href="#reading-pdf-files">Reading PDF Files</a></li>
|
||||
@ -305,6 +306,7 @@ span.string {
|
||||
<li><a href="#pdfioArrayGetSize">pdfioArrayGetSize</a></li>
|
||||
<li><a href="#pdfioArrayGetString">pdfioArrayGetString</a></li>
|
||||
<li><a href="#pdfioArrayGetType">pdfioArrayGetType</a></li>
|
||||
<li><a href="#pdfioArrayRemove">pdfioArrayRemove</a></li>
|
||||
<li><a href="#pdfioContentClip">pdfioContentClip</a></li>
|
||||
<li><a href="#pdfioContentDrawImage">pdfioContentDrawImage</a></li>
|
||||
<li><a href="#pdfioContentFill">pdfioContentFill</a></li>
|
||||
@ -361,6 +363,7 @@ span.string {
|
||||
<li><a href="#pdfioContentTextShow">pdfioContentTextShow</a></li>
|
||||
<li><a href="#pdfioContentTextShowJustified">pdfioContentTextShowJustified</a></li>
|
||||
<li><a href="#pdfioContentTextShowf">pdfioContentTextShowf</a></li>
|
||||
<li><a href="#pdfioDictClear">pdfioDictClear</a></li>
|
||||
<li><a href="#pdfioDictCopy">pdfioDictCopy</a></li>
|
||||
<li><a href="#pdfioDictCreate">pdfioDictCreate</a></li>
|
||||
<li><a href="#pdfioDictGetArray">pdfioDictGetArray</a></li>
|
||||
@ -368,7 +371,9 @@ span.string {
|
||||
<li><a href="#pdfioDictGetBoolean">pdfioDictGetBoolean</a></li>
|
||||
<li><a href="#pdfioDictGetDate">pdfioDictGetDate</a></li>
|
||||
<li><a href="#pdfioDictGetDict">pdfioDictGetDict</a></li>
|
||||
<li><a href="#pdfioDictGetKey">pdfioDictGetKey</a></li>
|
||||
<li><a href="#pdfioDictGetName">pdfioDictGetName</a></li>
|
||||
<li><a href="#pdfioDictGetNumPairs">pdfioDictGetNumPairs</a></li>
|
||||
<li><a href="#pdfioDictGetNumber">pdfioDictGetNumber</a></li>
|
||||
<li><a href="#pdfioDictGetObj">pdfioDictGetObj</a></li>
|
||||
<li><a href="#pdfioDictGetRect">pdfioDictGetRect</a></li>
|
||||
@ -395,6 +400,7 @@ span.string {
|
||||
<li><a href="#pdfioFileCreateICCObjFromFile">pdfioFileCreateICCObjFromFile</a></li>
|
||||
<li><a href="#pdfioFileCreateImageObjFromData">pdfioFileCreateImageObjFromData</a></li>
|
||||
<li><a href="#pdfioFileCreateImageObjFromFile">pdfioFileCreateImageObjFromFile</a></li>
|
||||
<li><a href="#pdfioFileCreateNameObj">pdfioFileCreateNameObj</a></li>
|
||||
<li><a href="#pdfioFileCreateNumberObj">pdfioFileCreateNumberObj</a></li>
|
||||
<li><a href="#pdfioFileCreateObj">pdfioFileCreateObj</a></li>
|
||||
<li><a href="#pdfioFileCreateOutput">pdfioFileCreateOutput</a></li>
|
||||
@ -436,6 +442,7 @@ span.string {
|
||||
<li><a href="#pdfioObjGetDict">pdfioObjGetDict</a></li>
|
||||
<li><a href="#pdfioObjGetGeneration">pdfioObjGetGeneration</a></li>
|
||||
<li><a href="#pdfioObjGetLength">pdfioObjGetLength</a></li>
|
||||
<li><a href="#pdfioObjGetName">pdfioObjGetName</a></li>
|
||||
<li><a href="#pdfioObjGetNumber">pdfioObjGetNumber</a></li>
|
||||
<li><a href="#pdfioObjGetSubtype">pdfioObjGetSubtype</a></li>
|
||||
<li><a href="#pdfioObjGetType">pdfioObjGetType</a></li>
|
||||
@ -572,6 +579,104 @@ LIBS += `pkg-config --libs pdfio`
|
||||
<p>PDFio also provides <a href="#pdf-content-helper-functions">PDF content helper functions</a> for producing PDF content that are defined in a separate header file:</p>
|
||||
<pre><code class="language-c"><span class="directive">#include <pdfio-content.h></span>
|
||||
</code></pre>
|
||||
<h3 class="title" id="understanding-pdf-files">Understanding PDF Files</h3>
|
||||
<p>A PDF file provides data and commands for displaying pages of graphics and text, and is structured in a way that allows it to be displayed in the same way across multiple devices and platforms. The following is a PDF which shows "Hello, World!" on one page:</p>
|
||||
<pre><code>%PDF-1.0 % Header starts here
|
||||
%âãÏÓ
|
||||
1 0 obj % Body starts here
|
||||
<<
|
||||
/Kids [2 0 R]
|
||||
/Count 1
|
||||
/Type /Pages
|
||||
</code></pre>
|
||||
<blockquote>
|
||||
<p>> endobj 2 0 obj <a href="<
|
||||
/Rotate 0
|
||||
/Parent 1 0 R
|
||||
/Resources 3 0 R
|
||||
/MediaBox [0 0 612 792]
|
||||
/Contents [4 0 R]/Type /Page
|
||||
"><
|
||||
/Rotate 0
|
||||
/Parent 1 0 R
|
||||
/Resources 3 0 R
|
||||
/MediaBox [0 0 612 792]
|
||||
/Contents [4 0 R]/Type /Page
|
||||
</a> endobj 3 0 obj <a href="<
|
||||
/Font
|
||||
<<
|
||||
/F0
|
||||
<<
|
||||
/BaseFont /Times-Italic
|
||||
/Subtype /Type1
|
||||
/Type /Font
|
||||
"><
|
||||
/Font
|
||||
<<
|
||||
/F0
|
||||
<<
|
||||
/BaseFont /Times-Italic
|
||||
/Subtype /Type1
|
||||
/Type /Font
|
||||
</a> > > endobj 4 0 obj <a href="<
|
||||
/Length 65
|
||||
"><
|
||||
/Length 65
|
||||
</a> stream</p>
|
||||
</blockquote>
|
||||
<ol>
|
||||
<li><p>0. 0. 1. 50. 700. cm BT /F0 36. Tf (Hello, World!) Tj ET endstream endobj 5 0 obj << /Pages 1 0 R /Type /Catalog</p>
|
||||
</li>
|
||||
</ol>
|
||||
<blockquote>
|
||||
<p>> endobj xref % Cross-reference table starts here 0 6 0000000000 65535 f 0000000015 00000 n 0000000074 00000 n 0000000192 00000 n 0000000291 00000 n 0000000409 00000 n trailer % Trailer starts here << /Root 5 0 R /Size 6 > startxref 459 %%EOF</p>
|
||||
<pre><code></code></pre>
|
||||
</blockquote>
|
||||
<h4 id="header">Header</h4>
|
||||
<p>The header is the first line of a PDF file that specifies the version of the PDF format that has been used, for example <code>%PDF-1.0</code>.</p>
|
||||
<p>Since PDF files almost always contain binary data, they can become corrupted if line endings are changed. For example, if the file is transferred using FTP in text mode or is edited in Notepad on Windows. To allow legacy file transfer programs to determine that the file is binary, the PDF standard recommends including some bytes with character codes higher than 127 in the header, for example:</p>
|
||||
<pre><code>%âãÏÓ
|
||||
</code></pre>
|
||||
<p>The percent sign indicates a comment line while the other few bytes are arbitrary character codes in excess of 127. So, the whole header in our example is:</p>
|
||||
<pre><code>%PDF-1.0
|
||||
%âãÏÓ
|
||||
</code></pre>
|
||||
<h4 id="body">Body</h4>
|
||||
<p>The file body consists of a sequence of objects, each preceded by an object number, generation number, and the obj keyword on one line, and followed by the endobj keyword on another. For example:</p>
|
||||
<pre><code>1 0 obj
|
||||
<<
|
||||
/Kids [2 0 R]
|
||||
/Count 1
|
||||
/Type /Pages
|
||||
</code></pre>
|
||||
<blockquote>
|
||||
<p>> endobj</p>
|
||||
<pre><code></code></pre>
|
||||
</blockquote>
|
||||
<p>In this example, the object number is 1 and the generation number is 0, meaning it is the first version of the object. The content for object 1 is between the initial <code>1 0 obj</code> and trailing <code>endobj</code> lines. In this case, the content is the dictionary <code><</Kids [2 0 R] /Count 1 /Type /Pages>></code>.</p>
|
||||
<h4 id="cross-reference-table">Cross-Reference Table</h4>
|
||||
<p>The cross-reference table lists the byte offset of each object in the file body. This allows random access to objects, meaning they don't have to be read in order. Objects that are not used are never read, making the process efficient. Operations like counting the number of pages in a PDF document are fast, even in large files.</p>
|
||||
<p>Each object has an object number and a generation number. Generation numbers are used when a cross-reference table entry is reused. For simplicity, we will assume generation numbers to be always zero and ignore them. The cross-reference table consists of a header line that indicates the number of entries, a free entry line for object 0, and a line for each of the objects in the file body. For example:</p>
|
||||
<pre><code>0 6 % Six entries in table, starting at 0
|
||||
0000000000 65535 f % Free entry for object 0
|
||||
0000000015 00000 n % Object 1 is at byte offset 15
|
||||
0000000074 00000 n % Object 2 is at byte offset 74
|
||||
0000000192 00000 n % etc...
|
||||
0000000291 00000 n
|
||||
0000000409 00000 n % Object 5 is at byte offset 409
|
||||
</code></pre>
|
||||
<h4 id="trailer">Trailer</h4>
|
||||
<p>The first line of the trailer is just the <code>trailer</code> keyword. This is followed by the trailer dictionary which contains at least the <code>/Size</code> entry specifying the number of entries in the cross-reference table and the <code>/Root</code> entry which references the object for the document catalog which is the root element of the graph of objects in the body.</p>
|
||||
<p>There follows a line with just the <code>startxref</code> keyword, a line with a single number specifying the byte offset of the start of the cross-reference table within the file, and then the line <code>%%EOF</code> which signals the end of the PDF file.</p>
|
||||
<pre><code>trailer % Trailer keyword
|
||||
<< % The trailer dictinonary
|
||||
/Root 5 0 R
|
||||
/Size 6
|
||||
</code></pre>
|
||||
<blockquote>
|
||||
<p>> startxref % startxref keyword 459 % Byte offset of cross-reference table %%EOF % End-of-file marker</p>
|
||||
<pre><code></code></pre>
|
||||
</blockquote>
|
||||
<h2 class="title" id="api-overview">API Overview</h2>
|
||||
<p>PDFio exposes several types:</p>
|
||||
<ul>
|
||||
@ -1502,6 +1607,19 @@ size_t pdfioArrayGetSize(<a href="#pdfio_array_t">pdfio_array_t</a> *a);</p>
|
||||
</tbody></table>
|
||||
<h4 class="returnvalue">Return Value</h4>
|
||||
<p class="description">Value type</p>
|
||||
<h3 class="function"><a id="pdfioArrayRemove">pdfioArrayRemove</a></h3>
|
||||
<p class="description">Remove an array entry.</p>
|
||||
<p class="code">
|
||||
<span class="reserved">bool</span> pdfioArrayRemove(<a href="#pdfio_array_t">pdfio_array_t</a> *a, size_t n);</p>
|
||||
<h4 class="parameters">Parameters</h4>
|
||||
<table class="list"><tbody>
|
||||
<tr><th>a</th>
|
||||
<td class="description">Array</td></tr>
|
||||
<tr><th>n</th>
|
||||
<td class="description">Index</td></tr>
|
||||
</tbody></table>
|
||||
<h4 class="returnvalue">Return Value</h4>
|
||||
<p class="description"><code>true</code> on success, <code>false</code> otherwise</p>
|
||||
<h3 class="function"><a id="pdfioContentClip">pdfioContentClip</a></h3>
|
||||
<p class="description">Clip output to the current path.</p>
|
||||
<p class="code">
|
||||
@ -2356,6 +2474,19 @@ argument specifies an array of UTF-8 encoded strings.</p>
|
||||
<p class="discussion">This function shows some formatted text in a PDF content stream. The
|
||||
"unicode" argument specifies that the current font maps to full Unicode.
|
||||
The "format" argument specifies a UTF-8 encoded <code>printf</code>-style format string.</p>
|
||||
<h3 class="function"><a id="pdfioDictClear">pdfioDictClear</a></h3>
|
||||
<p class="description">Remove a key/value pair from a dictionary.</p>
|
||||
<p class="code">
|
||||
<span class="reserved">bool</span> pdfioDictClear(<a href="#pdfio_dict_t">pdfio_dict_t</a> *dict, <span class="reserved">const</span> <span class="reserved">char</span> *key);</p>
|
||||
<h4 class="parameters">Parameters</h4>
|
||||
<table class="list"><tbody>
|
||||
<tr><th>dict</th>
|
||||
<td class="description">Dictionary</td></tr>
|
||||
<tr><th>key</th>
|
||||
<td class="description">Key</td></tr>
|
||||
</tbody></table>
|
||||
<h4 class="returnvalue">Return Value</h4>
|
||||
<p class="description"><code>true</code> if cleared, <code>false</code> otherwise</p>
|
||||
<h3 class="function"><a id="pdfioDictCopy">pdfioDictCopy</a></h3>
|
||||
<p class="description">Copy a dictionary to a PDF file.</p>
|
||||
<p class="code">
|
||||
@ -2447,6 +2578,19 @@ time_t pdfioDictGetDate(<a href="#pdfio_dict_t">pdfio_dict_t</a> *dict, <span cl
|
||||
</tbody></table>
|
||||
<h4 class="returnvalue">Return Value</h4>
|
||||
<p class="description">Value</p>
|
||||
<h3 class="function"><a id="pdfioDictGetKey">pdfioDictGetKey</a></h3>
|
||||
<p class="description">Get the key for the specified pair.</p>
|
||||
<p class="code">
|
||||
<span class="reserved">const</span> <span class="reserved">char</span> *pdfioDictGetKey(<a href="#pdfio_dict_t">pdfio_dict_t</a> *dict, size_t n);</p>
|
||||
<h4 class="parameters">Parameters</h4>
|
||||
<table class="list"><tbody>
|
||||
<tr><th>dict</th>
|
||||
<td class="description">Dictionary</td></tr>
|
||||
<tr><th>n</th>
|
||||
<td class="description">Pair index (<code>0</code>-based)</td></tr>
|
||||
</tbody></table>
|
||||
<h4 class="returnvalue">Return Value</h4>
|
||||
<p class="description">Key for specified pair</p>
|
||||
<h3 class="function"><a id="pdfioDictGetName">pdfioDictGetName</a></h3>
|
||||
<p class="description">Get a key name value from a dictionary.</p>
|
||||
<p class="code">
|
||||
@ -2460,6 +2604,17 @@ time_t pdfioDictGetDate(<a href="#pdfio_dict_t">pdfio_dict_t</a> *dict, <span cl
|
||||
</tbody></table>
|
||||
<h4 class="returnvalue">Return Value</h4>
|
||||
<p class="description">Value</p>
|
||||
<h3 class="function"><a id="pdfioDictGetNumPairs">pdfioDictGetNumPairs</a></h3>
|
||||
<p class="description">Get the number of key/value pairs in a dictionary.</p>
|
||||
<p class="code">
|
||||
size_t pdfioDictGetNumPairs(<a href="#pdfio_dict_t">pdfio_dict_t</a> *dict);</p>
|
||||
<h4 class="parameters">Parameters</h4>
|
||||
<table class="list"><tbody>
|
||||
<tr><th>dict</th>
|
||||
<td class="description">Dictionary</td></tr>
|
||||
</tbody></table>
|
||||
<h4 class="returnvalue">Return Value</h4>
|
||||
<p class="description">Number of pairs</p>
|
||||
<h3 class="function"><a id="pdfioDictGetNumber">pdfioDictGetNumber</a></h3>
|
||||
<p class="description">Get a key number value from a dictionary.</p>
|
||||
<p class="code">
|
||||
@ -2947,6 +3102,22 @@ image on the page.<br>
|
||||
Note: Currently PNG support is limited to grayscale, RGB, or indexed files
|
||||
without interlacing or alpha. Transparency (masking) based on color/index
|
||||
is supported.</blockquote>
|
||||
<h3 class="function"><a id="pdfioFileCreateNameObj">pdfioFileCreateNameObj</a></h3>
|
||||
<p class="description">Create a new object in a PDF file containing a name.</p>
|
||||
<p class="code">
|
||||
<a href="#pdfio_obj_t">pdfio_obj_t</a> *pdfioFileCreateNameObj(<a href="#pdfio_file_t">pdfio_file_t</a> *pdf, <span class="reserved">const</span> <span class="reserved">char</span> *name);</p>
|
||||
<h4 class="parameters">Parameters</h4>
|
||||
<table class="list"><tbody>
|
||||
<tr><th>pdf</th>
|
||||
<td class="description">PDF file</td></tr>
|
||||
<tr><th>name</th>
|
||||
<td class="description">Name value</td></tr>
|
||||
</tbody></table>
|
||||
<h4 class="returnvalue">Return Value</h4>
|
||||
<p class="description">New object</p>
|
||||
<h4 class="discussion">Discussion</h4>
|
||||
<p class="discussion">This function creates a new object with a name value in a PDF file.
|
||||
You must call <a href="#pdfioObjClose"><code>pdfioObjClose</code></a> to write the object to the file.</p>
|
||||
<h3 class="function"><a id="pdfioFileCreateNumberObj">pdfioFileCreateNumberObj</a></h3>
|
||||
<p class="description">Create a new object in a PDF file containing a number.</p>
|
||||
<p class="code">
|
||||
@ -3528,6 +3699,17 @@ size_t pdfioObjGetLength(<a href="#pdfio_obj_t">pdfio_obj_t</a> *obj);</p>
|
||||
</tbody></table>
|
||||
<h4 class="returnvalue">Return Value</h4>
|
||||
<p class="description">Length in bytes or <code>0</code> for none</p>
|
||||
<h3 class="function"><a id="pdfioObjGetName">pdfioObjGetName</a></h3>
|
||||
<p class="description">Get the name value associated with an object.</p>
|
||||
<p class="code">
|
||||
<span class="reserved">const</span> <span class="reserved">char</span> *pdfioObjGetName(<a href="#pdfio_obj_t">pdfio_obj_t</a> *obj);</p>
|
||||
<h4 class="parameters">Parameters</h4>
|
||||
<table class="list"><tbody>
|
||||
<tr><th>obj</th>
|
||||
<td class="description">Object</td></tr>
|
||||
</tbody></table>
|
||||
<h4 class="returnvalue">Return Value</h4>
|
||||
<p class="description">Dictionary or <code>NULL</code> on error</p>
|
||||
<h3 class="function"><a id="pdfioObjGetNumber">pdfioObjGetNumber</a></h3>
|
||||
<p class="description">Get the object's number.</p>
|
||||
<p class="code">
|
||||
|
||||
177
doc/pdfio.md
177
doc/pdfio.md
@ -120,6 +120,182 @@ that are defined in a separate header file:
|
||||
```
|
||||
|
||||
|
||||
Understanding PDF Files
|
||||
-----------------------
|
||||
|
||||
A PDF file provides data and commands for displaying pages of graphics and text,
|
||||
and is structured in a way that allows it to be displayed in the same way across
|
||||
multiple devices and platforms. The following is a PDF which shows "Hello,
|
||||
World!" on one page:
|
||||
|
||||
```
|
||||
%PDF-1.0 % Header starts here
|
||||
%âãÏÓ
|
||||
1 0 obj % Body starts here
|
||||
<<
|
||||
/Kids [2 0 R]
|
||||
/Count 1
|
||||
/Type /Pages
|
||||
>>
|
||||
endobj
|
||||
2 0 obj
|
||||
<<
|
||||
/Rotate 0
|
||||
/Parent 1 0 R
|
||||
/Resources 3 0 R
|
||||
/MediaBox [0 0 612 792]
|
||||
/Contents [4 0 R]/Type /Page
|
||||
>>
|
||||
endobj
|
||||
3 0 obj
|
||||
<<
|
||||
/Font
|
||||
<<
|
||||
/F0
|
||||
<<
|
||||
/BaseFont /Times-Italic
|
||||
/Subtype /Type1
|
||||
/Type /Font
|
||||
>>
|
||||
>>
|
||||
>>
|
||||
endobj
|
||||
4 0 obj
|
||||
<<
|
||||
/Length 65
|
||||
>>
|
||||
stream
|
||||
1. 0. 0. 1. 50. 700. cm
|
||||
BT
|
||||
/F0 36. Tf
|
||||
(Hello, World!) Tj
|
||||
ET
|
||||
endstream
|
||||
endobj
|
||||
5 0 obj
|
||||
<<
|
||||
/Pages 1 0 R
|
||||
/Type /Catalog
|
||||
>>
|
||||
endobj
|
||||
xref % Cross-reference table starts here
|
||||
0 6
|
||||
0000000000 65535 f
|
||||
0000000015 00000 n
|
||||
0000000074 00000 n
|
||||
0000000192 00000 n
|
||||
0000000291 00000 n
|
||||
0000000409 00000 n
|
||||
trailer % Trailer starts here
|
||||
<<
|
||||
/Root 5 0 R
|
||||
/Size 6
|
||||
>>
|
||||
startxref
|
||||
459
|
||||
%%EOF
|
||||
```
|
||||
|
||||
|
||||
### Header
|
||||
|
||||
The header is the first line of a PDF file that specifies the version of the PDF
|
||||
format that has been used, for example `%PDF-1.0`.
|
||||
|
||||
Since PDF files almost always contain binary data, they can become corrupted if
|
||||
line endings are changed. For example, if the file is transferred using FTP in
|
||||
text mode or is edited in Notepad on Windows. To allow legacy file transfer
|
||||
programs to determine that the file is binary, the PDF standard recommends
|
||||
including some bytes with character codes higher than 127 in the header, for
|
||||
example:
|
||||
|
||||
```
|
||||
%âãÏÓ
|
||||
```
|
||||
|
||||
The percent sign indicates a comment line while the other few bytes are
|
||||
arbitrary character codes in excess of 127. So, the whole header in our example
|
||||
is:
|
||||
|
||||
```
|
||||
%PDF-1.0
|
||||
%âãÏÓ
|
||||
```
|
||||
|
||||
|
||||
### Body
|
||||
|
||||
The file body consists of a sequence of objects, each preceded by an object
|
||||
number, generation number, and the obj keyword on one line, and followed by the
|
||||
endobj keyword on another. For example:
|
||||
|
||||
```
|
||||
1 0 obj
|
||||
<<
|
||||
/Kids [2 0 R]
|
||||
/Count 1
|
||||
/Type /Pages
|
||||
>>
|
||||
endobj
|
||||
```
|
||||
|
||||
In this example, the object number is 1 and the generation number is 0, meaning
|
||||
it is the first version of the object. The content for object 1 is between the
|
||||
initial `1 0 obj` and trailing `endobj` lines. In this case, the content is the
|
||||
dictionary `<</Kids [2 0 R] /Count 1 /Type /Pages>>`.
|
||||
|
||||
|
||||
### Cross-Reference Table
|
||||
|
||||
The cross-reference table lists the byte offset of each object in the file body.
|
||||
This allows random access to objects, meaning they don't have to be read in
|
||||
order. Objects that are not used are never read, making the process efficient.
|
||||
Operations like counting the number of pages in a PDF document are fast, even in
|
||||
large files.
|
||||
|
||||
Each object has an object number and a generation number. Generation numbers
|
||||
are used when a cross-reference table entry is reused. For simplicity, we will
|
||||
assume generation numbers to be always zero and ignore them. The
|
||||
cross-reference table consists of a header line that indicates the number of
|
||||
entries, a free entry line for object 0, and a line for each of the objects in
|
||||
the file body. For example:
|
||||
|
||||
```
|
||||
0 6 % Six entries in table, starting at 0
|
||||
0000000000 65535 f % Free entry for object 0
|
||||
0000000015 00000 n % Object 1 is at byte offset 15
|
||||
0000000074 00000 n % Object 2 is at byte offset 74
|
||||
0000000192 00000 n % etc...
|
||||
0000000291 00000 n
|
||||
0000000409 00000 n % Object 5 is at byte offset 409
|
||||
```
|
||||
|
||||
|
||||
### Trailer
|
||||
|
||||
The first line of the trailer is just the `trailer` keyword. This is followed
|
||||
by the trailer dictionary which contains at least the `/Size` entry specifying
|
||||
the number of entries in the cross-reference table and the `/Root` entry which
|
||||
references the object for the document catalog which is the root element of the
|
||||
graph of objects in the body.
|
||||
|
||||
There follows a line with just the `startxref` keyword, a line with a single
|
||||
number specifying the byte offset of the start of the cross-reference table
|
||||
within the file, and then the line `%%EOF` which signals the end of the PDF
|
||||
file.
|
||||
|
||||
```
|
||||
trailer % Trailer keyword
|
||||
<< % The trailer dictinonary
|
||||
/Root 5 0 R
|
||||
/Size 6
|
||||
>>
|
||||
startxref % startxref keyword
|
||||
459 % Byte offset of cross-reference table
|
||||
%%EOF % End-of-file marker
|
||||
```
|
||||
|
||||
|
||||
API Overview
|
||||
============
|
||||
|
||||
@ -132,6 +308,7 @@ PDFio exposes several types:
|
||||
- `pdfio_stream_t`: An object stream
|
||||
|
||||
|
||||
|
||||
Reading PDF Files
|
||||
-----------------
|
||||
|
||||
|
||||
46
examples/Makefile
Normal file
46
examples/Makefile
Normal file
@ -0,0 +1,46 @@
|
||||
#
|
||||
# Makefile for PDFio examples.
|
||||
#
|
||||
# Copyright © 2024 by Michael R Sweet.
|
||||
#
|
||||
# Licensed under Apache License v2.0. See the file "LICENSE" for more
|
||||
# information.
|
||||
#
|
||||
|
||||
# POSIX makefile
|
||||
.POSIX:
|
||||
|
||||
|
||||
# Common options
|
||||
CFLAGS = -g $(CPPFLAGS)
|
||||
CPPFLAGS = -I..
|
||||
LIBS = -L.. -lpdfio -lz
|
||||
|
||||
|
||||
# Targets
|
||||
TARGETS = \
|
||||
code128 \
|
||||
md2pdf
|
||||
|
||||
|
||||
# Make everything
|
||||
all: $(TARGETS)
|
||||
|
||||
|
||||
# Clean everything
|
||||
clean:
|
||||
rm -f $(TARGETS)
|
||||
|
||||
|
||||
# code128
|
||||
code128: code128.c
|
||||
$(CC) $(CFLAGS) -o $@ code128.c $(LIBS)
|
||||
|
||||
|
||||
# md2pdf
|
||||
md2pdf: md2pdf.c mmd.c mmd.h
|
||||
$(CC) $(CFLAGS) -o $@ md2pdf.c mmd.c $(LIBS)
|
||||
|
||||
|
||||
# Common dependencies...
|
||||
$(TARGETS): Makefile ../pdfio.h ../pdfio-content.h
|
||||
BIN
examples/Roboto-Bold.ttf
Normal file
BIN
examples/Roboto-Bold.ttf
Normal file
Binary file not shown.
BIN
examples/Roboto-Italic.ttf
Normal file
BIN
examples/Roboto-Italic.ttf
Normal file
Binary file not shown.
BIN
examples/Roboto-Regular.ttf
Normal file
BIN
examples/Roboto-Regular.ttf
Normal file
Binary file not shown.
BIN
examples/RobotoMono-Regular.ttf
Normal file
BIN
examples/RobotoMono-Regular.ttf
Normal file
Binary file not shown.
209
examples/code128.c
Normal file
209
examples/code128.c
Normal file
@ -0,0 +1,209 @@
|
||||
//
|
||||
// Code 128 barcode example for PDFio.
|
||||
//
|
||||
// Copyright © 2024 by Michael R Sweet.
|
||||
//
|
||||
// Licensed under Apache License v2.0. See the file "LICENSE" for more
|
||||
// information.
|
||||
//
|
||||
// Usage:
|
||||
//
|
||||
// ./code128 "BARCODE" ["TEXT"] >FILENAME.pdf
|
||||
//
|
||||
|
||||
#include <pdfio.h>
|
||||
#include <pdfio-content.h>
|
||||
|
||||
|
||||
//
|
||||
// 'make_code128()' - Make a Code 128 barcode string.
|
||||
//
|
||||
// This function produces a Code B (printable ASCII) representation of the
|
||||
// source string and doesn't try to optimize using Code C. Non-printable and
|
||||
// extended characters are ignored in the source string.
|
||||
//
|
||||
|
||||
|
||||
static char * // O - Output string
|
||||
make_code128(char *dst, // I - Destination buffer
|
||||
const char *src, // I - Source string
|
||||
size_t dstsize) // I - Size of destination buffer
|
||||
{
|
||||
char *dstptr, // Pointer into destination buffer
|
||||
*dstend; // End of destination buffer
|
||||
int sum; // Weighted sum
|
||||
static const char *code128_chars = // Code 128 characters
|
||||
" !\"#$%&'()*+,-./0123456789:;<=>?"
|
||||
"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
|
||||
"`abcdefghijklmnopqrstuvwxyz{|}~\303"
|
||||
"\304\305\306\307\310\311\312";
|
||||
static const char code128_fnc_3 = '\304';
|
||||
// FNC 3
|
||||
static const char code128_fnc_2 = '\305';
|
||||
// FNC 2
|
||||
static const char code128_shift_b = '\306';
|
||||
// Shift B (for lowercase)
|
||||
static const char code128_code_c = '\307';
|
||||
// Code C
|
||||
static const char code128_code_b = '\310';
|
||||
// Code B
|
||||
static const char code128_fnc_4 = '\311';
|
||||
// FNC 4
|
||||
static const char code128_fnc_1 = '\312';
|
||||
// FNC 1
|
||||
static const char code128_start_code_a = '\313';
|
||||
// Start code A
|
||||
static const char code128_start_code_b = '\314';
|
||||
// Start code A
|
||||
static const char code128_start_code_c = '\315';
|
||||
// Start code A
|
||||
static const char code128_stop = '\316';
|
||||
// Stop pattern
|
||||
|
||||
|
||||
// Start a Code B barcode...
|
||||
dstptr = dst;
|
||||
dstend = dst + dstsize - 3;
|
||||
|
||||
*dstptr++ = code128_start_code_b;
|
||||
sum = code128_start_code_b - 100;
|
||||
|
||||
while (*src && dstptr < dstend)
|
||||
{
|
||||
if (*src >= ' ' && *src < 0x7f)
|
||||
{
|
||||
sum += (dstptr - dst) * (*src - ' ');
|
||||
*dstptr++ = *src;
|
||||
}
|
||||
|
||||
src ++;
|
||||
}
|
||||
|
||||
// Add the weighted sum modulo 103
|
||||
*dstptr++ = code128_chars[sum % 103];
|
||||
|
||||
// Add the stop pattern and return...
|
||||
*dstptr++ = code128_stop;
|
||||
*dstptr = '\0';
|
||||
|
||||
return (dst);
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// 'output_cb()' - Write PDF data to the standard output...
|
||||
//
|
||||
|
||||
static ssize_t // O - Number of bytes written
|
||||
output_cb(void *output_cbdata, // I - Callback data (not used)
|
||||
const void *buffer, // I - Buffer to write
|
||||
size_t bytes) // I - Number of bytes to write
|
||||
{
|
||||
(void)output_cbdata;
|
||||
|
||||
return ((ssize_t)fwrite(buffer, 1, bytes, stdout));
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// 'main()' - Produce a single-page barcode file.
|
||||
//
|
||||
|
||||
int // O - Exit status
|
||||
main(int argc, // I - Number of command-line arguments
|
||||
char *argv[]) // I - Command-line arguments
|
||||
{
|
||||
const char *barcode, // Barcode to show
|
||||
*text; // Text to display under barcode
|
||||
pdfio_file_t *pdf; // Output PDF file
|
||||
pdfio_obj_t *barcode_font; // Barcode font object
|
||||
pdfio_obj_t *text_font = NULL; // Text font object
|
||||
pdfio_dict_t *page_dict; // Page dictionary
|
||||
pdfio_rect_t media_box; // Media/CropBox for page
|
||||
pdfio_stream_t *page_st; // Page stream
|
||||
char barcode_temp[256]; // Barcode buffer
|
||||
double barcode_height = 36.0, // Height of barcode
|
||||
barcode_width, // Width of barcode
|
||||
text_height = 0.0, // Height of text
|
||||
text_width = 0.0; // Width of text
|
||||
|
||||
|
||||
// Get the barcode and optional text from the command-line...
|
||||
if (argc < 2 || argc > 3)
|
||||
{
|
||||
fputs("Usage: code128 \"BARCODE\" [\"TEXT\"] >FILENAME.pdf\n", stderr);
|
||||
return (1);
|
||||
}
|
||||
|
||||
barcode = argv[1];
|
||||
text = argv[2];
|
||||
|
||||
// Output a PDF file to the standard output...
|
||||
#ifdef _WIN32
|
||||
setmode(1, O_BINARY); // Force binary output on Windows
|
||||
#endif // _WIN32
|
||||
|
||||
if ((pdf = pdfioFileCreateOutput(output_cb, /*output_cbdata*/NULL, /*version*/NULL, /*media_box*/NULL, /*crop_box*/NULL, /*error_cb*/NULL, /*error_data*/NULL)) == NULL)
|
||||
return (1);
|
||||
|
||||
// Load fonts...
|
||||
barcode_font = pdfioFileCreateFontObjFromFile(pdf, "code128.ttf", /*unicode*/false);
|
||||
if (text)
|
||||
text_font = pdfioFileCreateFontObjFromFile(pdf, "../testfiles/OpenSans-Regular.ttf", /*unicode*/true);
|
||||
|
||||
// Generate Code128 characters for the desired barcode...
|
||||
if (!(barcode[0] & 0x80))
|
||||
barcode = make_code128(barcode_temp, barcode, sizeof(barcode_temp));
|
||||
|
||||
// Compute sizes of the text...
|
||||
barcode_width = pdfioContentTextMeasure(barcode_font, barcode, barcode_height);
|
||||
if (text && text_font)
|
||||
{
|
||||
text_height = 9.0;
|
||||
text_width = pdfioContentTextMeasure(text_font, text, text_height);
|
||||
}
|
||||
|
||||
// Compute the size of the PDF page...
|
||||
media_box.x1 = 0.0;
|
||||
media_box.y1 = 0.0;
|
||||
media_box.x2 = (barcode_width > text_width ? barcode_width : text_width) + 18.0;
|
||||
media_box.y2 = barcode_height + text_height + 18.0;
|
||||
|
||||
// Start a page for the barcode...
|
||||
page_dict = pdfioDictCreate(pdf);
|
||||
|
||||
pdfioDictSetRect(page_dict, "MediaBox", &media_box);
|
||||
pdfioDictSetRect(page_dict, "CropBox", &media_box);
|
||||
|
||||
pdfioPageDictAddFont(page_dict, "B128", barcode_font);
|
||||
if (text_font)
|
||||
pdfioPageDictAddFont(page_dict, "TEXT", text_font);
|
||||
|
||||
page_st = pdfioFileCreatePage(pdf, page_dict);
|
||||
|
||||
// Draw the page...
|
||||
pdfioContentSetStrokeColorGray(page_st, 0.0);
|
||||
|
||||
pdfioContentSetTextFont(page_st, "B128", barcode_height);
|
||||
pdfioContentTextBegin(page_st);
|
||||
pdfioContentTextMoveTo(page_st, 0.5 * (media_box.x2 - barcode_width), 9.0 + text_height);
|
||||
pdfioContentTextShow(page_st, /*unicode*/false, barcode);
|
||||
pdfioContentTextEnd(page_st);
|
||||
|
||||
if (text && text_font)
|
||||
{
|
||||
pdfioContentSetTextFont(page_st, "TEXT", text_height);
|
||||
pdfioContentTextBegin(page_st);
|
||||
pdfioContentTextMoveTo(page_st, 0.5 * (media_box.x2 - text_width), 9.0);
|
||||
pdfioContentTextShow(page_st, /*unicode*/true, text);
|
||||
pdfioContentTextEnd(page_st);
|
||||
}
|
||||
|
||||
pdfioStreamClose(page_st);
|
||||
|
||||
// Close and return...
|
||||
pdfioFileClose(pdf);
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
BIN
examples/code128.ttf
Normal file
BIN
examples/code128.ttf
Normal file
Binary file not shown.
1631
examples/md2pdf.c
Normal file
1631
examples/md2pdf.c
Normal file
File diff suppressed because it is too large
Load Diff
27
examples/md2pdf.md
Normal file
27
examples/md2pdf.md
Normal file
@ -0,0 +1,27 @@
|
||||
---
|
||||
title: Markdown to PDF Converter Example
|
||||
...
|
||||
|
||||
Markdown to PDF Converter Example
|
||||
=================================
|
||||
|
||||
The `md2pdf` example program reads a markdown file and formats the content onto
|
||||
pages in a PDF file. It demonstrates how to:
|
||||
|
||||
- Embed base and TrueType fonts,
|
||||
- Format text,
|
||||
- Embed JPEG and PNG images,
|
||||
- Add headers and footers, and
|
||||
- Add hyperlinks.
|
||||
|
||||
|
||||
Source Files
|
||||
------------
|
||||
|
||||
The `md2pdf` program is organized into three source files: `md2pdf.c` which
|
||||
contains the code to format the markdown content and `mmd.h` and `mmd.c` (from
|
||||
the [Miniature Markdown Library][MMD] project) which load the markdown content.
|
||||
|
||||
[MMD]: https://www.msweet.org/mmd/
|
||||
|
||||
|
||||
2381
examples/mmd.c
Normal file
2381
examples/mmd.c
Normal file
File diff suppressed because it is too large
Load Diff
112
examples/mmd.h
Normal file
112
examples/mmd.h
Normal file
@ -0,0 +1,112 @@
|
||||
//
|
||||
// Header file for miniature markdown library.
|
||||
//
|
||||
// https://www.msweet.org/mmd
|
||||
//
|
||||
// Copyright © 2017-2024 by Michael R Sweet.
|
||||
//
|
||||
// Licensed under Apache License v2.0. See the file "LICENSE" for more
|
||||
// information.
|
||||
//
|
||||
|
||||
#ifndef MMD_H
|
||||
# define MMD_H
|
||||
# include <stdio.h>
|
||||
# include <stdbool.h>
|
||||
# ifdef __cplusplus
|
||||
extern "C" {
|
||||
# endif // __cplusplus
|
||||
|
||||
|
||||
//
|
||||
// Constants...
|
||||
//
|
||||
|
||||
enum mmd_option_e
|
||||
{
|
||||
MMD_OPTION_NONE = 0x00, // No markdown extensions
|
||||
MMD_OPTION_METADATA = 0x01, // Jekyll metadata extension
|
||||
MMD_OPTION_TABLES = 0x02, // Github table extension
|
||||
MMD_OPTION_TASKS = 0x04, // Github task item extension (check boxes)
|
||||
MMD_OPTION_ALL = 0x07 // All supported markdown extensions
|
||||
};
|
||||
typedef unsigned mmd_option_t;
|
||||
|
||||
typedef enum mmd_type_e
|
||||
{
|
||||
MMD_TYPE_NONE = -1,
|
||||
MMD_TYPE_DOCUMENT, // The document root
|
||||
MMD_TYPE_METADATA, // Document metadata
|
||||
MMD_TYPE_BLOCK_QUOTE, // <blockquote>
|
||||
MMD_TYPE_ORDERED_LIST, // <ol>
|
||||
MMD_TYPE_UNORDERED_LIST, // <ul>
|
||||
MMD_TYPE_LIST_ITEM, // <li>
|
||||
MMD_TYPE_TABLE, // <table>
|
||||
MMD_TYPE_TABLE_HEADER, // <thead>
|
||||
MMD_TYPE_TABLE_BODY, // <tbody>
|
||||
MMD_TYPE_TABLE_ROW, // <tr>
|
||||
MMD_TYPE_HEADING_1 = 10, // <h1>
|
||||
MMD_TYPE_HEADING_2, // <h2>
|
||||
MMD_TYPE_HEADING_3, // <h3>
|
||||
MMD_TYPE_HEADING_4, // <h4>
|
||||
MMD_TYPE_HEADING_5, // <h5>
|
||||
MMD_TYPE_HEADING_6, // <h6>
|
||||
MMD_TYPE_PARAGRAPH, // <p>
|
||||
MMD_TYPE_CODE_BLOCK, // <pre><code>
|
||||
MMD_TYPE_THEMATIC_BREAK, // <hr />
|
||||
MMD_TYPE_TABLE_HEADER_CELL, // <th>
|
||||
MMD_TYPE_TABLE_BODY_CELL_LEFT, // <td align="left">
|
||||
MMD_TYPE_TABLE_BODY_CELL_CENTER, // <td align="center">
|
||||
MMD_TYPE_TABLE_BODY_CELL_RIGHT, // <td align="right">
|
||||
MMD_TYPE_NORMAL_TEXT = 100, // Normal text
|
||||
MMD_TYPE_EMPHASIZED_TEXT, // <em>text</em>
|
||||
MMD_TYPE_STRONG_TEXT, // <strong>text</strong>
|
||||
MMD_TYPE_STRUCK_TEXT, // <del>text</del>
|
||||
MMD_TYPE_LINKED_TEXT, // <a href="link">text</a>
|
||||
MMD_TYPE_CODE_TEXT, // <code>text</code>
|
||||
MMD_TYPE_IMAGE, // <img src="link" />
|
||||
MMD_TYPE_HARD_BREAK, // <br />
|
||||
MMD_TYPE_SOFT_BREAK, // <wbr />
|
||||
MMD_TYPE_METADATA_TEXT, // name: value
|
||||
MMD_TYPE_CHECKBOX // [ ] or [x]
|
||||
} mmd_type_t;
|
||||
|
||||
|
||||
//
|
||||
// Types...
|
||||
//
|
||||
|
||||
typedef struct _mmd_s mmd_t; // Markdown node
|
||||
typedef size_t (*mmd_iocb_t)(void *cbdata, char *buffer, size_t bytes);
|
||||
// mmdLoadIO callback function
|
||||
|
||||
//
|
||||
// Functions...
|
||||
//
|
||||
|
||||
extern char *mmdCopyAllText(mmd_t *node);
|
||||
extern void mmdFree(mmd_t *node);
|
||||
extern const char *mmdGetExtra(mmd_t *node);
|
||||
extern mmd_t *mmdGetFirstChild(mmd_t *node);
|
||||
extern mmd_t *mmdGetLastChild(mmd_t *node);
|
||||
extern const char *mmdGetMetadata(mmd_t *doc, const char *keyword);
|
||||
extern mmd_t *mmdGetNextSibling(mmd_t *node);
|
||||
extern mmd_option_t mmdGetOptions(void);
|
||||
extern mmd_t *mmdGetParent(mmd_t *node);
|
||||
extern mmd_t *mmdGetPrevSibling(mmd_t *node);
|
||||
extern const char *mmdGetText(mmd_t *node);
|
||||
extern mmd_type_t mmdGetType(mmd_t *node);
|
||||
extern const char *mmdGetURL(mmd_t *node);
|
||||
extern bool mmdGetWhitespace(mmd_t *node);
|
||||
extern bool mmdIsBlock(mmd_t *node);
|
||||
extern mmd_t *mmdLoad(mmd_t *root, const char *filename);
|
||||
extern mmd_t *mmdLoadFile(mmd_t *root, FILE *fp);
|
||||
extern mmd_t *mmdLoadIO(mmd_t *root, mmd_iocb_t cb, void *cbdata);
|
||||
extern mmd_t *mmdLoadString(mmd_t *root, const char *s);
|
||||
extern void mmdSetOptions(mmd_option_t options);
|
||||
|
||||
|
||||
# ifdef __cplusplus
|
||||
}
|
||||
# endif // __cplusplus
|
||||
#endif // !MMD_H
|
||||
@ -1,7 +1,7 @@
|
||||
//
|
||||
// PDF array functions for PDFio.
|
||||
//
|
||||
// Copyright © 2021 by Michael R Sweet.
|
||||
// Copyright © 2021-2024 by Michael R Sweet.
|
||||
//
|
||||
// Licensed under Apache License v2.0. See the file "LICENSE" for more
|
||||
// information.
|
||||
@ -637,6 +637,28 @@ _pdfioArrayRead(pdfio_file_t *pdf, // I - PDF file
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// 'pdfioArrayRemove()' - Remove an array entry.
|
||||
//
|
||||
|
||||
bool // O - `true` on success, `false` otherwise
|
||||
pdfioArrayRemove(pdfio_array_t *a, // I - Array
|
||||
size_t n) // I - Index
|
||||
{
|
||||
if (!a || n >= a->num_values)
|
||||
return (false);
|
||||
|
||||
if (a->values[n].type == PDFIO_VALTYPE_BINARY)
|
||||
free(a->values[n].value.binary.data);
|
||||
|
||||
a->num_values --;
|
||||
if (n < a->num_values)
|
||||
memmove(a->values + n, a->values + n + 1, (a->num_values - n) * sizeof(_pdfio_value_t));
|
||||
|
||||
return (true);
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// '_pdfioArrayWrite()' - Write an array to a PDF file.
|
||||
//
|
||||
|
||||
308
pdfio-base-font-widths.h
Normal file
308
pdfio-base-font-widths.h
Normal file
@ -0,0 +1,308 @@
|
||||
//
|
||||
// PDF base font widths for PDFio.
|
||||
//
|
||||
// Copyright © 2024 by Michael R Sweet.
|
||||
//
|
||||
// Licensed under Apache License v2.0. See the file "LICENSE" for more
|
||||
// information.
|
||||
//
|
||||
|
||||
#ifndef PDFIO_BASE_FONT_WIDTHS_H
|
||||
# define PDFIO_BASE_FONT_WIDTHS_H 1
|
||||
|
||||
|
||||
static short courier_bold_widths[256] =
|
||||
{
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 0,
|
||||
600, 0, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 0, 600, 0,
|
||||
0, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 0, 600, 600,
|
||||
0, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600
|
||||
};
|
||||
|
||||
|
||||
static short courier_boldoblique_widths[256] =
|
||||
{
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 0,
|
||||
600, 0, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 0, 600, 0,
|
||||
0, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 0, 600, 600,
|
||||
0, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600
|
||||
};
|
||||
|
||||
|
||||
static short courier_oblique_widths[256] =
|
||||
{
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 0,
|
||||
600, 0, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 0, 600, 0,
|
||||
0, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 0, 600, 600,
|
||||
0, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600
|
||||
};
|
||||
|
||||
|
||||
static short courier_widths[256] =
|
||||
{
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 0,
|
||||
600, 0, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 0, 600, 0,
|
||||
0, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 0, 600, 600,
|
||||
0, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600,
|
||||
600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600, 600
|
||||
};
|
||||
|
||||
|
||||
static short helvetica_bold_widths[256] =
|
||||
{
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
278, 333, 474, 556, 556, 889, 722, 238, 333, 333, 389, 584, 278, 333, 278, 278,
|
||||
556, 556, 556, 556, 556, 556, 556, 556, 556, 556, 333, 333, 584, 584, 584, 611,
|
||||
975, 722, 722, 722, 722, 667, 611, 778, 722, 278, 556, 722, 611, 833, 722, 778,
|
||||
667, 778, 722, 667, 611, 722, 667, 944, 667, 667, 611, 333, 278, 333, 584, 556,
|
||||
333, 556, 611, 556, 611, 556, 333, 611, 611, 278, 278, 556, 278, 889, 611, 611,
|
||||
611, 611, 389, 556, 333, 611, 556, 778, 556, 556, 500, 389, 280, 389, 584, 0,
|
||||
556, 0, 278, 556, 500, 1000, 556, 556, 333, 1000, 667, 333, 1000, 0, 611, 0,
|
||||
0, 278, 278, 500, 500, 350, 556, 1000, 333, 1000, 556, 333, 944, 0, 500, 667,
|
||||
0, 333, 556, 556, 556, 556, 280, 556, 333, 737, 370, 556, 584, 584, 737, 333,
|
||||
606, 584, 351, 351, 333, 611, 556, 278, 333, 351, 365, 556, 869, 869, 869, 611,
|
||||
722, 722, 722, 722, 722, 722, 1000, 722, 667, 667, 667, 667, 278, 278, 278, 278,
|
||||
722, 722, 778, 778, 778, 778, 778, 584, 778, 722, 722, 722, 722, 667, 667, 611,
|
||||
556, 556, 556, 556, 556, 556, 889, 556, 556, 556, 556, 556, 278, 278, 278, 278,
|
||||
611, 611, 611, 611, 611, 611, 611, 584, 611, 611, 611, 611, 611, 556, 611, 556
|
||||
};
|
||||
|
||||
|
||||
static short helvetica_boldoblique_widths[256] =
|
||||
{
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
278, 333, 474, 556, 556, 889, 722, 238, 333, 333, 389, 584, 278, 333, 278, 278,
|
||||
556, 556, 556, 556, 556, 556, 556, 556, 556, 556, 333, 333, 584, 584, 584, 611,
|
||||
975, 722, 722, 722, 722, 667, 611, 778, 722, 278, 556, 722, 611, 833, 722, 778,
|
||||
667, 778, 722, 667, 611, 722, 667, 944, 667, 667, 611, 333, 278, 333, 584, 556,
|
||||
333, 556, 611, 556, 611, 556, 333, 611, 611, 278, 278, 556, 278, 889, 611, 611,
|
||||
611, 611, 389, 556, 333, 611, 556, 778, 556, 556, 500, 389, 280, 389, 584, 0,
|
||||
556, 0, 278, 556, 500, 1000, 556, 556, 333, 1000, 667, 333, 1000, 0, 611, 0,
|
||||
0, 278, 278, 500, 500, 350, 556, 1000, 333, 1000, 556, 333, 944, 0, 500, 667,
|
||||
0, 333, 556, 556, 556, 556, 280, 556, 333, 737, 370, 556, 584, 584, 737, 333,
|
||||
606, 584, 444, 444, 333, 611, 556, 278, 333, 444, 365, 556, 1055, 1055, 1055, 611,
|
||||
722, 722, 722, 722, 722, 722, 1000, 722, 667, 667, 667, 667, 278, 278, 278, 278,
|
||||
722, 722, 778, 778, 778, 778, 778, 584, 778, 722, 722, 722, 722, 667, 667, 611,
|
||||
556, 556, 556, 556, 556, 556, 889, 556, 556, 556, 556, 556, 278, 278, 278, 278,
|
||||
611, 611, 611, 611, 611, 611, 611, 584, 611, 611, 611, 611, 611, 556, 611, 556
|
||||
};
|
||||
|
||||
|
||||
static short helvetica_oblique_widths[256] =
|
||||
{
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
278, 278, 355, 556, 556, 889, 667, 191, 333, 333, 389, 584, 278, 333, 278, 278,
|
||||
556, 556, 556, 556, 556, 556, 556, 556, 556, 556, 278, 278, 584, 584, 584, 556,
|
||||
1015, 667, 667, 722, 722, 667, 611, 778, 722, 278, 500, 667, 556, 833, 722, 778,
|
||||
667, 778, 722, 667, 611, 722, 667, 944, 667, 667, 611, 278, 278, 278, 469, 556,
|
||||
333, 556, 556, 500, 556, 556, 278, 556, 556, 222, 222, 500, 222, 833, 556, 556,
|
||||
556, 556, 333, 500, 278, 556, 500, 722, 500, 500, 500, 334, 260, 334, 584, 0,
|
||||
556, 0, 222, 556, 333, 1000, 556, 556, 333, 1000, 667, 333, 1000, 0, 611, 0,
|
||||
0, 222, 222, 333, 333, 350, 556, 1000, 333, 1000, 500, 333, 944, 0, 500, 667,
|
||||
0, 333, 556, 556, 556, 556, 260, 556, 333, 737, 370, 556, 584, 584, 737, 333,
|
||||
606, 584, 390, 390, 333, 556, 537, 278, 333, 390, 365, 556, 947, 947, 947, 611,
|
||||
667, 667, 667, 667, 667, 667, 1000, 722, 667, 667, 667, 667, 278, 278, 278, 278,
|
||||
722, 722, 778, 778, 778, 778, 778, 584, 778, 722, 722, 722, 722, 667, 667, 611,
|
||||
556, 556, 556, 556, 556, 556, 889, 500, 556, 556, 556, 556, 278, 278, 278, 278,
|
||||
556, 556, 556, 556, 556, 556, 556, 584, 611, 556, 556, 556, 556, 500, 556, 500
|
||||
};
|
||||
|
||||
|
||||
static short helvetica_widths[256] =
|
||||
{
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
278, 278, 355, 556, 556, 889, 667, 191, 333, 333, 389, 584, 278, 333, 278, 278,
|
||||
556, 556, 556, 556, 556, 556, 556, 556, 556, 556, 278, 278, 584, 584, 584, 556,
|
||||
1015, 667, 667, 722, 722, 667, 611, 778, 722, 278, 500, 667, 556, 833, 722, 778,
|
||||
667, 778, 722, 667, 611, 722, 667, 944, 667, 667, 611, 278, 278, 278, 469, 556,
|
||||
333, 556, 556, 500, 556, 556, 278, 556, 556, 222, 222, 500, 222, 833, 556, 556,
|
||||
556, 556, 333, 500, 278, 556, 500, 722, 500, 500, 500, 334, 260, 334, 584, 0,
|
||||
556, 0, 222, 556, 333, 1000, 556, 556, 333, 1000, 667, 333, 1000, 0, 611, 0,
|
||||
0, 222, 221, 333, 333, 350, 556, 1000, 333, 1000, 500, 333, 944, 0, 500, 667,
|
||||
0, 333, 556, 556, 556, 556, 260, 556, 333, 737, 370, 556, 584, 584, 737, 333,
|
||||
606, 584, 351, 351, 333, 556, 537, 278, 333, 351, 365, 556, 869, 869, 869, 611,
|
||||
667, 667, 667, 667, 667, 667, 1000, 722, 667, 667, 667, 667, 278, 278, 278, 278,
|
||||
722, 722, 778, 778, 778, 778, 778, 584, 778, 722, 722, 722, 722, 666, 666, 611,
|
||||
556, 556, 556, 556, 556, 556, 889, 500, 556, 556, 556, 556, 278, 278, 278, 278,
|
||||
556, 556, 556, 556, 556, 556, 556, 584, 611, 556, 556, 556, 556, 500, 555, 500
|
||||
};
|
||||
|
||||
|
||||
static short symbol_widths[256] =
|
||||
{
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
250, 333, 713, 500, 549, 833, 778, 439, 333, 333, 500, 549, 250, 549, 250, 278,
|
||||
500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 278, 278, 549, 549, 549, 444,
|
||||
549, 722, 667, 722, 612, 611, 763, 603, 722, 333, 631, 722, 686, 889, 722, 722,
|
||||
768, 741, 556, 592, 611, 690, 439, 768, 645, 795, 611, 333, 863, 333, 658, 500,
|
||||
500, 631, 549, 549, 494, 439, 521, 411, 603, 329, 603, 549, 549, 576, 521, 549,
|
||||
549, 521, 549, 603, 439, 576, 713, 686, 493, 686, 494, 480, 200, 480, 549, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
762, 620, 247, 549, 167, 713, 500, 753, 753, 753, 753, 1042, 987, 603, 987, 603,
|
||||
400, 549, 411, 549, 549, 713, 494, 460, 549, 549, 549, 549, 1000, 603, 1000, 658,
|
||||
823, 686, 795, 987, 768, 768, 823, 768, 768, 713, 713, 713, 713, 713, 713, 713,
|
||||
768, 713, 790, 790, 890, 823, 549, 250, 713, 603, 603, 1042, 987, 603, 987, 603,
|
||||
494, 329, 790, 790, 786, 713, 384, 384, 384, 384, 384, 384, 494, 494, 494, 494,
|
||||
0, 329, 274, 686, 686, 686, 384, 384, 384, 384, 384, 384, 494, 494, 494, 0
|
||||
};
|
||||
|
||||
|
||||
static short times_bold_widths[256] =
|
||||
{
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
250, 333, 555, 500, 500, 1000, 833, 278, 333, 333, 500, 570, 250, 333, 250, 278,
|
||||
500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 333, 333, 570, 570, 570, 500,
|
||||
930, 722, 667, 722, 722, 667, 611, 778, 778, 389, 500, 778, 667, 944, 722, 778,
|
||||
611, 778, 722, 556, 667, 722, 722, 1000, 722, 722, 667, 333, 278, 333, 581, 500,
|
||||
333, 500, 556, 444, 556, 444, 333, 500, 556, 278, 333, 556, 278, 833, 556, 500,
|
||||
556, 556, 444, 389, 333, 556, 500, 722, 500, 500, 444, 394, 220, 394, 520, 0,
|
||||
500, 0, 333, 500, 500, 1000, 500, 500, 333, 1000, 556, 333, 1000, 0, 667, 0,
|
||||
0, 333, 333, 500, 500, 350, 500, 1000, 333, 1000, 389, 333, 722, 0, 444, 722,
|
||||
0, 333, 500, 500, 500, 500, 220, 500, 333, 747, 300, 500, 570, 570, 747, 333,
|
||||
400, 570, 300, 300, 333, 556, 540, 250, 333, 300, 330, 500, 750, 750, 750, 500,
|
||||
722, 722, 722, 722, 722, 722, 1000, 722, 667, 667, 667, 667, 389, 389, 389, 389,
|
||||
722, 722, 778, 778, 778, 778, 778, 570, 778, 722, 722, 722, 722, 722, 611, 556,
|
||||
500, 500, 500, 500, 500, 500, 722, 444, 444, 444, 444, 444, 278, 278, 278, 278,
|
||||
500, 556, 500, 500, 500, 500, 500, 570, 500, 556, 556, 556, 556, 500, 556, 500
|
||||
};
|
||||
|
||||
|
||||
static short times_bolditalic_widths[256] =
|
||||
{
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
250, 389, 555, 500, 500, 833, 778, 278, 333, 333, 500, 570, 250, 333, 250, 278,
|
||||
500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 333, 333, 570, 570, 570, 500,
|
||||
832, 667, 667, 667, 722, 667, 667, 722, 778, 389, 500, 667, 611, 889, 722, 722,
|
||||
611, 722, 667, 556, 611, 722, 667, 889, 667, 611, 611, 333, 278, 333, 570, 500,
|
||||
333, 500, 500, 444, 500, 444, 333, 500, 556, 278, 278, 500, 278, 778, 556, 500,
|
||||
500, 500, 389, 389, 278, 556, 444, 667, 500, 444, 389, 348, 220, 348, 570, 0,
|
||||
500, 0, 333, 500, 500, 1000, 500, 500, 333, 1000, 556, 333, 944, 0, 611, 0,
|
||||
0, 333, 333, 500, 500, 350, 500, 1000, 333, 1000, 389, 333, 722, 0, 389, 611,
|
||||
0, 389, 500, 500, 500, 500, 220, 500, 333, 747, 266, 500, 606, 606, 747, 333,
|
||||
400, 570, 300, 300, 333, 576, 500, 250, 333, 300, 300, 500, 750, 750, 750, 500,
|
||||
667, 667, 667, 667, 667, 667, 944, 667, 667, 667, 667, 667, 389, 389, 389, 389,
|
||||
722, 722, 722, 722, 722, 722, 722, 570, 722, 722, 722, 722, 722, 611, 611, 500,
|
||||
500, 500, 500, 500, 500, 500, 722, 444, 444, 444, 444, 444, 278, 278, 278, 278,
|
||||
500, 556, 500, 500, 500, 500, 500, 570, 500, 556, 556, 556, 556, 444, 500, 444
|
||||
};
|
||||
|
||||
|
||||
static short times_italic_widths[256] =
|
||||
{
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
250, 333, 420, 500, 500, 833, 778, 214, 333, 333, 500, 675, 250, 333, 250, 278,
|
||||
500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 333, 333, 675, 675, 675, 500,
|
||||
920, 611, 611, 667, 722, 611, 611, 722, 722, 333, 444, 667, 556, 833, 667, 722,
|
||||
611, 722, 611, 500, 556, 722, 611, 833, 611, 556, 556, 389, 278, 389, 422, 500,
|
||||
333, 500, 500, 444, 500, 444, 278, 500, 500, 278, 278, 444, 278, 722, 500, 500,
|
||||
500, 500, 389, 389, 278, 500, 444, 667, 444, 444, 389, 400, 275, 400, 541, 0,
|
||||
500, 0, 333, 500, 556, 889, 500, 500, 333, 1000, 500, 333, 944, 0, 556, 0,
|
||||
0, 333, 333, 556, 556, 350, 500, 889, 333, 980, 389, 333, 667, 0, 389, 556,
|
||||
0, 389, 500, 500, 500, 500, 275, 500, 333, 760, 276, 500, 675, 675, 760, 333,
|
||||
400, 675, 300, 300, 333, 500, 523, 250, 333, 300, 310, 500, 750, 750, 750, 500,
|
||||
611, 611, 611, 611, 611, 611, 889, 667, 611, 611, 611, 611, 333, 333, 333, 333,
|
||||
722, 667, 722, 722, 722, 722, 722, 675, 722, 722, 722, 722, 722, 556, 611, 500,
|
||||
500, 500, 500, 500, 500, 500, 667, 444, 444, 444, 444, 444, 278, 278, 278, 278,
|
||||
500, 500, 500, 500, 500, 500, 500, 675, 500, 500, 500, 500, 500, 444, 500, 444
|
||||
};
|
||||
|
||||
|
||||
static short times_roman_widths[256] =
|
||||
{
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
250, 333, 408, 500, 500, 833, 778, 180, 333, 333, 500, 564, 250, 333, 250, 278,
|
||||
500, 500, 500, 500, 500, 500, 500, 500, 500, 500, 278, 278, 564, 564, 564, 444,
|
||||
921, 722, 667, 667, 722, 611, 556, 722, 722, 333, 389, 722, 611, 889, 722, 722,
|
||||
556, 722, 667, 556, 611, 722, 722, 944, 722, 722, 611, 333, 278, 333, 469, 500,
|
||||
333, 444, 500, 444, 500, 444, 333, 500, 500, 278, 278, 500, 278, 778, 500, 500,
|
||||
500, 500, 333, 389, 278, 500, 500, 722, 500, 500, 444, 480, 200, 480, 541, 0,
|
||||
500, 0, 333, 500, 444, 1000, 500, 500, 333, 1000, 556, 333, 889, 0, 611, 0,
|
||||
0, 333, 333, 444, 444, 350, 500, 1000, 333, 980, 389, 333, 722, 0, 444, 722,
|
||||
0, 333, 500, 500, 500, 500, 200, 500, 333, 760, 276, 500, 564, 564, 760, 333,
|
||||
400, 564, 300, 300, 333, 500, 453, 250, 333, 300, 310, 500, 750, 750, 750, 444,
|
||||
722, 722, 722, 722, 722, 722, 889, 667, 611, 611, 611, 611, 333, 333, 333, 333,
|
||||
722, 722, 722, 722, 722, 722, 722, 564, 722, 722, 722, 722, 722, 722, 556, 500,
|
||||
444, 444, 444, 444, 444, 444, 667, 444, 444, 444, 444, 444, 278, 278, 278, 278,
|
||||
500, 500, 500, 500, 500, 500, 500, 564, 500, 500, 500, 500, 500, 500, 500, 500
|
||||
};
|
||||
|
||||
|
||||
static short zapf_dingbats_widths[256] =
|
||||
{
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
278, 974, 961, 974, 980, 719, 789, 790, 791, 690, 960, 939, 549, 855, 911, 933,
|
||||
911, 945, 974, 755, 846, 762, 761, 571, 677, 763, 760, 759, 754, 494, 552, 537,
|
||||
577, 692, 786, 788, 788, 790, 793, 794, 816, 823, 789, 841, 823, 833, 816, 831,
|
||||
923, 744, 723, 749, 790, 792, 695, 776, 768, 792, 759, 707, 708, 682, 701, 826,
|
||||
815, 789, 789, 707, 687, 696, 689, 786, 787, 713, 791, 785, 791, 873, 761, 762,
|
||||
762, 759, 759, 892, 892, 788, 784, 438, 138, 277, 415, 392, 392, 668, 668, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 732, 544, 544, 910, 667, 760, 760, 776, 595, 694, 626, 788, 788, 788, 788,
|
||||
788, 788, 788, 788, 788, 788, 788, 788, 788, 788, 788, 788, 788, 788, 788, 788,
|
||||
788, 788, 788, 788, 788, 788, 788, 788, 788, 788, 788, 788, 788, 788, 788, 788,
|
||||
788, 788, 788, 788, 894, 838, 1016, 458, 748, 924, 748, 918, 927, 928, 928, 834,
|
||||
873, 828, 924, 924, 917, 930, 931, 463, 883, 836, 836, 867, 867, 696, 696, 874,
|
||||
0, 874, 760, 946, 771, 865, 771, 888, 967, 888, 831, 873, 927, 970, 918, 0
|
||||
};
|
||||
|
||||
|
||||
#endif // !PDFIO_BASE_FONT_WIDTHS_H
|
||||
152
pdfio-content.c
152
pdfio-content.c
@ -1,7 +1,7 @@
|
||||
//
|
||||
// Content helper functions for PDFio.
|
||||
//
|
||||
// Copyright © 2021-2023 by Michael R Sweet.
|
||||
// Copyright © 2021-2024 by Michael R Sweet.
|
||||
//
|
||||
// Licensed under Apache License v2.0. See the file "LICENSE" for more
|
||||
// information.
|
||||
@ -9,6 +9,7 @@
|
||||
|
||||
#include "pdfio-private.h"
|
||||
#include "pdfio-content.h"
|
||||
#include "pdfio-base-font-widths.h"
|
||||
#include "ttf.h"
|
||||
#include <math.h>
|
||||
#ifndef M_PI
|
||||
@ -1074,7 +1075,7 @@ pdfioContentTextMeasure(
|
||||
const char *s, // I - UTF-8 string
|
||||
double size) // I - Font size/height
|
||||
{
|
||||
const char *subtype; // Font sub-type
|
||||
const char *basefont; // Base font name
|
||||
ttf_t *ttf = (ttf_t *)_pdfioObjGetExtension(font);
|
||||
// TrueType font data
|
||||
ttf_rect_t extents; // Text extents
|
||||
@ -1083,75 +1084,109 @@ pdfioContentTextMeasure(
|
||||
*tempptr; // Pointer into temporary string
|
||||
|
||||
|
||||
if ((subtype = pdfioObjGetSubtype(font)) == NULL || strcmp(subtype, "Type0"))
|
||||
if (!ttf && (basefont = pdfioDictGetName(pdfioObjGetDict(font), "BaseFont")) != NULL)
|
||||
{
|
||||
// Map non-CP1282 characters to '?', everything else as-is...
|
||||
tempptr = temp;
|
||||
// Measure the width using the compiled-in base font tables...
|
||||
const short *widths; // Widths
|
||||
int width = 0; // Current width
|
||||
|
||||
while (*s && tempptr < (temp + sizeof(temp) - 3))
|
||||
if (strcmp(basefont, "Symbol") && strcmp(basefont, "Zapf-Dingbats"))
|
||||
{
|
||||
if ((*s & 0xe0) == 0xc0)
|
||||
{
|
||||
// Two-byte UTF-8
|
||||
ch = ((s[0] & 0x1f) << 6) | (s[1] & 0x3f);
|
||||
s += 2;
|
||||
}
|
||||
else if ((*s & 0xf0) == 0xe0)
|
||||
{
|
||||
// Three-byte UTF-8
|
||||
ch = ((s[0] & 0x0f) << 12) | ((s[1] & 0x3f) << 6) | (s[2] & 0x3f);
|
||||
s += 3;
|
||||
}
|
||||
else if ((*s & 0xf8) == 0xf0)
|
||||
{
|
||||
// Four-byte UTF-8
|
||||
ch = ((s[0] & 0x07) << 18) | ((s[1] & 0x3f) << 12) | ((s[2] & 0x3f) << 6) | (s[3] & 0x3f);
|
||||
s += 4;
|
||||
}
|
||||
else
|
||||
{
|
||||
ch = *s++;
|
||||
}
|
||||
// Map non-CP1282 characters to '?', everything else as-is...
|
||||
tempptr = temp;
|
||||
|
||||
if (ch > 255)
|
||||
while (*s && tempptr < (temp + sizeof(temp) - 3))
|
||||
{
|
||||
// Try mapping from Unicode to CP1252...
|
||||
size_t i; // Looping var
|
||||
|
||||
for (i = 0; i < (sizeof(_pdfio_cp1252) / sizeof(_pdfio_cp1252[0])); i ++)
|
||||
if ((*s & 0xe0) == 0xc0)
|
||||
{
|
||||
if (ch == _pdfio_cp1252[i])
|
||||
break;
|
||||
// Two-byte UTF-8
|
||||
ch = ((s[0] & 0x1f) << 6) | (s[1] & 0x3f);
|
||||
s += 2;
|
||||
}
|
||||
else if ((*s & 0xf0) == 0xe0)
|
||||
{
|
||||
// Three-byte UTF-8
|
||||
ch = ((s[0] & 0x0f) << 12) | ((s[1] & 0x3f) << 6) | (s[2] & 0x3f);
|
||||
s += 3;
|
||||
}
|
||||
else if ((*s & 0xf8) == 0xf0)
|
||||
{
|
||||
// Four-byte UTF-8
|
||||
ch = ((s[0] & 0x07) << 18) | ((s[1] & 0x3f) << 12) | ((s[2] & 0x3f) << 6) | (s[3] & 0x3f);
|
||||
s += 4;
|
||||
}
|
||||
else
|
||||
{
|
||||
ch = *s++;
|
||||
}
|
||||
|
||||
if (i >= (sizeof(_pdfio_cp1252) / sizeof(_pdfio_cp1252[0])))
|
||||
ch = '?'; // Unsupported chars map to ?
|
||||
}
|
||||
if (ch > 255)
|
||||
{
|
||||
// Try mapping from Unicode to CP1252...
|
||||
size_t i; // Looping var
|
||||
|
||||
for (i = 0; i < (sizeof(_pdfio_cp1252) / sizeof(_pdfio_cp1252[0])); i ++)
|
||||
{
|
||||
if (ch == _pdfio_cp1252[i])
|
||||
break;
|
||||
}
|
||||
|
||||
if (i < (sizeof(_pdfio_cp1252) / sizeof(_pdfio_cp1252[0])))
|
||||
ch = i + 0x80; // Extra characters from 0x80 to 0x9f
|
||||
else
|
||||
ch = '?'; // Unsupported chars map to ?
|
||||
}
|
||||
|
||||
if (ch < 128)
|
||||
{
|
||||
// ASCII
|
||||
*tempptr++ = (char)ch;
|
||||
}
|
||||
else if (ch < 2048)
|
||||
{
|
||||
// 2-byte UTF-8
|
||||
*tempptr++ = (char)(0xc0 | ((ch >> 6) & 0x1f));
|
||||
*tempptr++ = (char)(0x80 | (ch & 0x3f));
|
||||
}
|
||||
else
|
||||
{
|
||||
// 3-byte UTF-8
|
||||
*tempptr++ = (char)(0xe0 | ((ch >> 12) & 0x0f));
|
||||
*tempptr++ = (char)(0x80 | ((ch >> 6) & 0x3f));
|
||||
*tempptr++ = (char)(0x80 | (ch & 0x3f));
|
||||
}
|
||||
|
||||
*tempptr = '\0';
|
||||
s = temp;
|
||||
}
|
||||
|
||||
*tempptr = '\0';
|
||||
s = temp;
|
||||
// Choose the appropriate table...
|
||||
if (!strcmp(basefont, "Courier"))
|
||||
widths = courier_widths;
|
||||
else if (!strcmp(basefont, "Courier-Bold"))
|
||||
widths = courier_bold_widths;
|
||||
else if (!strcmp(basefont, "Courier-BoldOblique"))
|
||||
widths = courier_boldoblique_widths;
|
||||
else if (!strcmp(basefont, "Courier-Oblique"))
|
||||
widths = courier_oblique_widths;
|
||||
else if (!strcmp(basefont, "Helvetica"))
|
||||
widths = helvetica_widths;
|
||||
else if (!strcmp(basefont, "Helvetica-Bold"))
|
||||
widths = helvetica_bold_widths;
|
||||
else if (!strcmp(basefont, "Helvetica-BoldOblique"))
|
||||
widths = helvetica_boldoblique_widths;
|
||||
else if (!strcmp(basefont, "Helvetica-Oblique"))
|
||||
widths = helvetica_oblique_widths;
|
||||
else if (!strcmp(basefont, "Symbol"))
|
||||
widths = symbol_widths;
|
||||
else if (!strcmp(basefont, "Times-Bold"))
|
||||
widths = times_bold_widths;
|
||||
else if (!strcmp(basefont, "Times-BoldItalic"))
|
||||
widths = times_bolditalic_widths;
|
||||
else if (!strcmp(basefont, "Times-Italic"))
|
||||
widths = times_italic_widths;
|
||||
else if (!strcmp(basefont, "Times-Roman"))
|
||||
widths = times_roman_widths;
|
||||
else if (!strcmp(basefont, "Zapf-Dingbats"))
|
||||
widths = zapf_dingbats_widths;
|
||||
else
|
||||
return (0.0);
|
||||
|
||||
// Calculate the width using the corresponding table...
|
||||
while (*s)
|
||||
{
|
||||
width += widths[*s & 255];
|
||||
s ++;
|
||||
}
|
||||
|
||||
return (size * 0.001 * width);
|
||||
}
|
||||
|
||||
// If we get here then we need to measure using the TrueType library...
|
||||
ttfGetExtents(ttf, (float)size, s, &extents);
|
||||
|
||||
return (extents.right - extents.left);
|
||||
@ -1421,8 +1456,9 @@ pdfioContentTextShowJustified(
|
||||
// - "Times-Roman"
|
||||
// - "ZapfDingbats"
|
||||
//
|
||||
// Base fonts always use the Windows CP1252 (ISO-8859-1 with additional
|
||||
// characters such as the Euro symbol) subset of Unicode.
|
||||
// Aside from "Symbol" and "Zapf-Dingbats", Base fonts use the Windows CP1252
|
||||
// (ISO-8859-1 with additional characters such as the Euro symbol) subset of
|
||||
// Unicode.
|
||||
//
|
||||
|
||||
pdfio_obj_t * // O - Font object
|
||||
|
||||
42
pdfio-dict.c
42
pdfio-dict.c
@ -1,7 +1,7 @@
|
||||
//
|
||||
// PDF dictionary functions for PDFio.
|
||||
//
|
||||
// Copyright © 2021-2023 by Michael R Sweet.
|
||||
// Copyright © 2021-2024 by Michael R Sweet.
|
||||
//
|
||||
// Licensed under Apache License v2.0. See the file "LICENSE" for more
|
||||
// information.
|
||||
@ -18,19 +18,22 @@ static int compare_pairs(_pdfio_pair_t *a, _pdfio_pair_t *b);
|
||||
|
||||
|
||||
//
|
||||
// '_pdfioDictClear()' - Remove a key/value pair from a dictionary.
|
||||
// 'pdfioDictClear()' - Remove a key/value pair from a dictionary.
|
||||
//
|
||||
|
||||
void
|
||||
_pdfioDictClear(pdfio_dict_t *dict, // I - Dictionary
|
||||
const char *key) // I - Key
|
||||
bool // O - `true` if cleared, `false` otherwise
|
||||
pdfioDictClear(pdfio_dict_t *dict, // I - Dictionary
|
||||
const char *key) // I - Key
|
||||
{
|
||||
size_t idx; // Index into pairs
|
||||
_pdfio_pair_t *pair, // Current pair
|
||||
pkey; // Search key
|
||||
|
||||
|
||||
PDFIO_DEBUG("_pdfioDictClear(dict=%p, key=\"%s\")\n", dict, key);
|
||||
PDFIO_DEBUG("pdfioDictClear(dict=%p, key=\"%s\")\n", dict, key);
|
||||
|
||||
if (!dict || !key)
|
||||
return (false);
|
||||
|
||||
// See if the key is already set...
|
||||
if (dict->num_pairs > 0)
|
||||
@ -48,8 +51,12 @@ _pdfioDictClear(pdfio_dict_t *dict, // I - Dictionary
|
||||
|
||||
if (idx < dict->num_pairs)
|
||||
memmove(pair, pair + 1, (dict->num_pairs - idx) * sizeof(_pdfio_pair_t));
|
||||
|
||||
return (true);
|
||||
}
|
||||
}
|
||||
|
||||
return (false);
|
||||
}
|
||||
|
||||
|
||||
@ -335,6 +342,18 @@ pdfioDictGetDict(pdfio_dict_t *dict, // I - Dictionary
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// 'pdfioDictGetKey()' - Get the key for the specified pair.
|
||||
//
|
||||
|
||||
const char * // O - Key for specified pair
|
||||
pdfioDictGetKey(pdfio_dict_t *dict, // I - Dictionary
|
||||
size_t n) // I - Pair index (`0`-based)
|
||||
{
|
||||
return ((dict && n < dict->num_pairs) ? dict->pairs[n].key : NULL);
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// 'pdfioDictGetName()' - Get a key name value from a dictionary.
|
||||
//
|
||||
@ -353,6 +372,17 @@ pdfioDictGetName(pdfio_dict_t *dict, // I - Dictionary
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// 'pdfioDictGetNumPairs()' - Get the number of key/value pairs in a dictionary.
|
||||
//
|
||||
|
||||
size_t // O - Number of pairs
|
||||
pdfioDictGetNumPairs(pdfio_dict_t *dict)// I - Dictionary
|
||||
{
|
||||
return (dict ? dict->num_pairs : 0);
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// 'pdfioDictGetNumber()' - Get a key number value from a dictionary.
|
||||
//
|
||||
|
||||
31
pdfio-file.c
31
pdfio-file.c
@ -244,6 +244,35 @@ pdfioFileCreateArrayObj(
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// 'pdfioFileCreateNameObj()' - Create a new object in a PDF file containing a name.
|
||||
//
|
||||
// This function creates a new object with a name value in a PDF file.
|
||||
// You must call @link pdfioObjClose@ to write the object to the file.
|
||||
//
|
||||
|
||||
pdfio_obj_t * // O - New object
|
||||
pdfioFileCreateNameObj(
|
||||
pdfio_file_t *pdf, // I - PDF file
|
||||
const char *name) // I - Name value
|
||||
{
|
||||
_pdfio_value_t value; // Object value
|
||||
|
||||
|
||||
// Range check input...
|
||||
if (!pdf || !name)
|
||||
return (NULL);
|
||||
|
||||
value.type = PDFIO_VALTYPE_NAME;
|
||||
value.value.name = pdfioStringCreate(pdf, name);
|
||||
|
||||
if (!value.value.name)
|
||||
return (NULL);
|
||||
|
||||
return (_pdfioFileCreateObj(pdf, NULL, &value));
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// 'pdfioFileCreateNumberObj()' - Create a new object in a PDF file containing a number.
|
||||
//
|
||||
@ -1948,7 +1977,7 @@ load_xref(
|
||||
{
|
||||
PDFIO_DEBUG("load_xref: '%s' at offset %lu\n", line, (unsigned long)trailer_offset);
|
||||
|
||||
if (!strncmp(line, "trailer", 7) && (!line[7] || isspace(line[7] & 255)))
|
||||
if (!strncmp(line, "trailer", 7) && (!line[7] || isspace(line[7] & 255) || line[7] == '<'))
|
||||
{
|
||||
if (line[7])
|
||||
{
|
||||
|
||||
@ -99,7 +99,7 @@ pdfioObjCopy(pdfio_file_t *pdf, // I - PDF file
|
||||
return (NULL);
|
||||
|
||||
if (dstobj->value.type == PDFIO_VALTYPE_DICT)
|
||||
_pdfioDictClear(dstobj->value.value.dict, "Length");
|
||||
pdfioDictClear(dstobj->value.value.dict, "Length");
|
||||
|
||||
if (srcobj->stream_offset)
|
||||
{
|
||||
@ -333,6 +333,26 @@ pdfioObjGetLength(pdfio_obj_t *obj) // I - Object
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// 'pdfioObjGetName()' - Get the name value associated with an object.
|
||||
//
|
||||
|
||||
const char * // O - Dictionary or `NULL` on error
|
||||
pdfioObjGetName(pdfio_obj_t *obj) // I - Object
|
||||
{
|
||||
if (!obj)
|
||||
return (NULL);
|
||||
|
||||
if (obj->value.type == PDFIO_VALTYPE_NONE)
|
||||
_pdfioObjLoad(obj);
|
||||
|
||||
if (obj->value.type == PDFIO_VALTYPE_NAME)
|
||||
return (obj->value.value.name);
|
||||
else
|
||||
return (NULL);
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// 'pdfioObjGetNumber()' - Get the object's number.
|
||||
//
|
||||
|
||||
@ -353,7 +353,6 @@ extern void _pdfioCryptoSHA256Init(_pdfio_sha256_t *ctx) _PDFIO_INTERNAL;
|
||||
extern void _pdfioCryptoSHA256Finish(_pdfio_sha256_t *ctx, uint8_t *Message_Digest) _PDFIO_INTERNAL;
|
||||
extern bool _pdfioCryptoUnlock(pdfio_file_t *pdf, pdfio_password_cb_t password_cb, void *password_data) _PDFIO_INTERNAL;
|
||||
|
||||
extern void _pdfioDictClear(pdfio_dict_t *dict, const char *key) _PDFIO_INTERNAL;
|
||||
extern bool _pdfioDictDecrypt(pdfio_file_t *pdf, pdfio_obj_t *obj, pdfio_dict_t *dict, size_t depth) _PDFIO_INTERNAL;
|
||||
extern void _pdfioDictDebug(pdfio_dict_t *dict, FILE *fp) _PDFIO_INTERNAL;
|
||||
extern void _pdfioDictDelete(pdfio_dict_t *dict) _PDFIO_INTERNAL;
|
||||
|
||||
8
pdfio.h
8
pdfio.h
@ -23,7 +23,7 @@ extern "C" {
|
||||
// Version number...
|
||||
//
|
||||
|
||||
# define PDFIO_VERSION "1.3.2"
|
||||
# define PDFIO_VERSION "1.4.0"
|
||||
|
||||
|
||||
//
|
||||
@ -151,7 +151,9 @@ extern pdfio_obj_t *pdfioArrayGetObj(pdfio_array_t *a, size_t n) _PDFIO_PUBLIC;
|
||||
extern size_t pdfioArrayGetSize(pdfio_array_t *a) _PDFIO_PUBLIC;
|
||||
extern const char *pdfioArrayGetString(pdfio_array_t *a, size_t n) _PDFIO_PUBLIC;
|
||||
extern pdfio_valtype_t pdfioArrayGetType(pdfio_array_t *a, size_t n) _PDFIO_PUBLIC;
|
||||
extern bool pdfioArrayRemove(pdfio_array_t *a, size_t n) _PDFIO_PUBLIC;
|
||||
|
||||
extern bool pdfioDictClear(pdfio_dict_t *dict, const char *key) _PDFIO_PUBLIC;
|
||||
extern pdfio_dict_t *pdfioDictCopy(pdfio_file_t *pdf, pdfio_dict_t *dict) _PDFIO_PUBLIC;
|
||||
extern pdfio_dict_t *pdfioDictCreate(pdfio_file_t *pdf) _PDFIO_PUBLIC;
|
||||
extern pdfio_array_t *pdfioDictGetArray(pdfio_dict_t *dict, const char *key) _PDFIO_PUBLIC;
|
||||
@ -159,7 +161,9 @@ extern unsigned char *pdfioDictGetBinary(pdfio_dict_t *dict, const char *key, si
|
||||
extern bool pdfioDictGetBoolean(pdfio_dict_t *dict, const char *key) _PDFIO_PUBLIC;
|
||||
extern time_t pdfioDictGetDate(pdfio_dict_t *dict, const char *key) _PDFIO_PUBLIC;
|
||||
extern pdfio_dict_t *pdfioDictGetDict(pdfio_dict_t *dict, const char *key) _PDFIO_PUBLIC;
|
||||
extern const char *pdfioDictGetKey(pdfio_dict_t *dict, size_t n) _PDFIO_PUBLIC;
|
||||
extern const char *pdfioDictGetName(pdfio_dict_t *dict, const char *key) _PDFIO_PUBLIC;
|
||||
extern size_t pdfioDictGetNumPairs(pdfio_dict_t *dict) _PDFIO_PUBLIC;
|
||||
extern double pdfioDictGetNumber(pdfio_dict_t *dict, const char *key) _PDFIO_PUBLIC;
|
||||
extern pdfio_obj_t *pdfioDictGetObj(pdfio_dict_t *dict, const char *key) _PDFIO_PUBLIC;
|
||||
extern pdfio_rect_t *pdfioDictGetRect(pdfio_dict_t *dict, const char *key, pdfio_rect_t *rect) _PDFIO_PUBLIC;
|
||||
@ -182,6 +186,7 @@ extern bool pdfioDictSetStringf(pdfio_dict_t *dict, const char *key, const char
|
||||
extern bool pdfioFileClose(pdfio_file_t *pdf) _PDFIO_PUBLIC;
|
||||
extern pdfio_file_t *pdfioFileCreate(const char *filename, const char *version, pdfio_rect_t *media_box, pdfio_rect_t *crop_box, pdfio_error_cb_t error_cb, void *error_data) _PDFIO_PUBLIC;
|
||||
extern pdfio_obj_t *pdfioFileCreateArrayObj(pdfio_file_t *pdf, pdfio_array_t *array) _PDFIO_PUBLIC;
|
||||
extern pdfio_obj_t *pdfioFileCreateNameObj(pdfio_file_t *pdf, const char *name) _PDFIO_PUBLIC;
|
||||
extern pdfio_obj_t *pdfioFileCreateNumberObj(pdfio_file_t *pdf, double number) _PDFIO_PUBLIC;
|
||||
extern pdfio_obj_t *pdfioFileCreateObj(pdfio_file_t *pdf, pdfio_dict_t *dict) _PDFIO_PUBLIC;
|
||||
extern pdfio_file_t *pdfioFileCreateOutput(pdfio_output_cb_t output_cb, void *output_ctx, const char *version, pdfio_rect_t *media_box, pdfio_rect_t *crop_box, pdfio_error_cb_t error_cb, void *error_data) _PDFIO_PUBLIC;
|
||||
@ -222,6 +227,7 @@ extern pdfio_array_t *pdfioObjGetArray(pdfio_obj_t *obj) _PDFIO_PUBLIC;
|
||||
extern pdfio_dict_t *pdfioObjGetDict(pdfio_obj_t *obj) _PDFIO_PUBLIC;
|
||||
extern unsigned short pdfioObjGetGeneration(pdfio_obj_t *obj) _PDFIO_PUBLIC;
|
||||
extern size_t pdfioObjGetLength(pdfio_obj_t *obj) _PDFIO_PUBLIC;
|
||||
extern const char *pdfioObjGetName(pdfio_obj_t *obj) _PDFIO_PUBLIC;
|
||||
extern size_t pdfioObjGetNumber(pdfio_obj_t *obj) _PDFIO_PUBLIC;
|
||||
extern const char *pdfioObjGetSubtype(pdfio_obj_t *obj) _PDFIO_PUBLIC;
|
||||
extern const char *pdfioObjGetType(pdfio_obj_t *obj) _PDFIO_PUBLIC;
|
||||
|
||||
@ -1,5 +1,5 @@
|
||||
LIBRARY pdfio1
|
||||
VERSION 1.3
|
||||
VERSION 1.4
|
||||
EXPORTS
|
||||
_pdfioArrayDebug
|
||||
_pdfioArrayDecrypt
|
||||
@ -23,7 +23,6 @@ _pdfioCryptoSHA256Append
|
||||
_pdfioCryptoSHA256Finish
|
||||
_pdfioCryptoSHA256Init
|
||||
_pdfioCryptoUnlock
|
||||
_pdfioDictClear
|
||||
_pdfioDictDebug
|
||||
_pdfioDictDecrypt
|
||||
_pdfioDictDelete
|
||||
@ -96,6 +95,7 @@ pdfioArrayGetObj
|
||||
pdfioArrayGetSize
|
||||
pdfioArrayGetString
|
||||
pdfioArrayGetType
|
||||
pdfioArrayRemove
|
||||
pdfioContentClip
|
||||
pdfioContentDrawImage
|
||||
pdfioContentFill
|
||||
@ -153,6 +153,7 @@ pdfioContentTextNextLine
|
||||
pdfioContentTextShow
|
||||
pdfioContentTextShowJustified
|
||||
pdfioContentTextShowf
|
||||
pdfioDictClear
|
||||
pdfioDictCopy
|
||||
pdfioDictCreate
|
||||
pdfioDictGetArray
|
||||
@ -160,7 +161,9 @@ pdfioDictGetBinary
|
||||
pdfioDictGetBoolean
|
||||
pdfioDictGetDate
|
||||
pdfioDictGetDict
|
||||
pdfioDictGetKey
|
||||
pdfioDictGetName
|
||||
pdfioDictGetNumPairs
|
||||
pdfioDictGetNumber
|
||||
pdfioDictGetObj
|
||||
pdfioDictGetRect
|
||||
@ -187,6 +190,7 @@ pdfioFileCreateFontObjFromFile
|
||||
pdfioFileCreateICCObjFromFile
|
||||
pdfioFileCreateImageObjFromData
|
||||
pdfioFileCreateImageObjFromFile
|
||||
pdfioFileCreateNameObj
|
||||
pdfioFileCreateNumberObj
|
||||
pdfioFileCreateObj
|
||||
pdfioFileCreateOutput
|
||||
@ -228,6 +232,7 @@ pdfioObjGetArray
|
||||
pdfioObjGetDict
|
||||
pdfioObjGetGeneration
|
||||
pdfioObjGetLength
|
||||
pdfioObjGetName
|
||||
pdfioObjGetNumber
|
||||
pdfioObjGetSubtype
|
||||
pdfioObjGetType
|
||||
|
||||
Reference in New Issue
Block a user