dany/pdfio
1
0
Fork 0
mirror of https://github.com/michaelrsweet/pdfio.git synced 2024-11-08 06:28:27 +01:00
Code Issues Packages Projects Releases Wiki Activity

Initial checkin.

Browse Source
This commit is contained in:
Michael R Sweet 2021-04-10 08:00:52 -04:00
commit 7a6659038b
No known key found for this signature in database
GPG Key ID: 999559A027815955
15 changed files with 648 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
.gitignore vendored Normal file
View File

@ -0,0 +1,6 @@
*.1.dylib
*.a
*.o
*.so
/testpdfio

202
LICENSE Normal file
View File

@ -0,0 +1,202 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright [yyyy] [name of copyright owner]
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

134
Makefile Normal file
View File

@ -0,0 +1,134 @@
#
# Makefile for pdfio.
#
# Copyright © 2021 by Michael R Sweet.
#
# Licensed under Apache License v2.0. See the file "LICENSE" for more
# information.
#
# POSIX makefile
.POSIX:
# Variables...
AR = ar
ARFLAGS = cr
CC = cc
CFLAGS =
CODESIGN_IDENTITY = Developer ID
COMMONFLAGS = -Os -g
CPPFLAGS =
DESTDIR = $(DSTROOT)
DSO = cc
DSOFLAGS =
DSONAME =
LDFLAGS =
LIBS = -lz
RANLIB = ranlib
VERSION = 1.0
prefix = /usr/local
# Base rules
.SUFFIXES: .c .h .o
.c.o:
$(CC) $(CFLAGS) $(CPPFLAGS) $(COMMONFLAGS) -c $<
# Files
LIBOBJS = \
pdfio-common.o \
pdfio-read.o \
pdfio-write.o
OBJS = \
$(LIBOBJS) \
testpdfio.o
TARGETS = \
$(DSONAME) \
libpdfio.a \
testpdfio
# Make everything
all: $(TARGETS)
all-shared:
if test `uname` = Darwin; then \
$(MAKE) DSONAME="libpdfio.1.dylib" -$(MAKEFLAGS) all; \
else
$(MAKE) DSONAME="libpdfio.so.1" -$(MAKEFLAGS) all; \
fi
# Clean everything
clean:
rm -f $(TARGETS) $(OBJS)
# Install everything
install: $(TARGETS)
-mkdir -p $(DESTDIR)$(prefix)/include
cp pdfio.h $(DESTDIR)$(prefix)/include
-mkdir -p $(DESTDIR)$(prefix)/lib
cp libpdfio.a $(DESTDIR)$(prefix)/lib
$(RANLIB) $(DESTDIR)$(prefix)/lib/libpdfio.a
if test "x$(DSONAME)" = xlibpdfio.so.1; then \
cp $(DSONAME) $(DESTDIR)$(prefix)/lib; \
ln -sf libpdfio.so.1 $(DESTDIR)$(prefix)/lib/libpdfio.so; \
elif test "x$(DSONAME)" = xlibpdfio.1.dylib; then \
cp $(DSONAME) $(DESTDIR)$(prefix)/lib; \
codesign -s "$(CODESIGN_IDENTITY)" -o runtime --timestamp $(DESTDIR)$(prefix)/lib/libpdfio.1.dylib; \
ln -sf libpdfio.1.dylib $(DESTDIR)$(prefix)/lib/libpdfio.dylib; \
fi
-mkdir -p $(DESTDIR)$(prefix)/lib/pkgconfig
echo '"prefix="$(prefix)"' >>$(DESTDIR)$(prefix)/lib/pkgconfig/pdfio.pc
cat pdfio.pc.in >$(DESTDIR)$(prefix)/lib/pkgconfig/pdfio.pc
-mkdir -p $(DESTDIR)$(prefix)/share/doc
cp pdfio.html LICENSE NOTICE $(DESTDIR)$(prefix)/share/doc
-mkdir -p $(DESTDIR)$(prefix)/share/man/man3
cp pdfio.3 LICENSE NOTICE $(DESTDIR)$(prefix)/share/man/man3
install-shared:
if test `uname` = Darwin; then \
$(MAKE) DSONAME="libpdfio.1.dylib" -$(MAKEFLAGS) install; \
else
$(MAKE) DSONAME="libpdfio.so.1" -$(MAKEFLAGS) install; \
fi
# Test everything
test: testpdfio
./testpdfio
# pdfio library
libpdfio.a: $(LIBOBJS)
$(AR) $(ARFLAGS) $@ $(LIBOBJS)
$(RANLIB) $@
libpdfio.so.1: $(LIBOBJS)
$(CC) $(DSOFLAGS) $(COMMONFLAGS) -shared -o $@ -Wl,soname,$@ $(LIBOBJS) $(LIBS)
libpdfio.1.dylib: $(LIBOBJS)
$(CC) $(DSOFLAGS) $(COMMONFLAGS) -dynamiclib -o $@ -install_name $(prefix)/lib/$@ -current_version $(VERSION) -compatibility_version 1.0 $(LIBOBJS) $(LIBS)
# pdfio test program
testpdfio: testpdfio.o libpdfio.a
$(CC) $(LDFLAGS) $(COMMONFLAGS) -o $@ testpdfio.o libpdfio.a $(LIBS)
# Dependencies
$(OBJS): pdfio.h Makefile
# Make documentation using Codedoc <https://www.msweet.org/codedoc>
DOCFLAGS = \
--author "Michael R Sweet" \
--copyright "Copyright (c) 2021 by Michael R Sweet" \
--docversion $(VERSION)
doc:
codedoc $(DOCFLAGS) --title "pdfio Programming Manual" pdfio.h $(LIBOBJS:.o=.c) --body pdfio.md pdfio.xml >pdfio.html
codedoc $(DOCFLAGS) --title "pdf read/write library" --man pdfio --section 3 --body pdfio.md pdfio.xml >pdfio.3
rm -f pdfio.xml

20
NOTICE Normal file
View File

@ -0,0 +1,20 @@
pdfio - PDF Read/Write Library
Copyright © 2021 by Michael R Sweet.
(Optional) Exceptions to the Apache 2.0 License:
================================================
As an exception, if, as a result of your compiling your source code, portions
of this Software are embedded into an Object form of such source code, you
may redistribute such embedded portions in such Object form without complying
with the conditions of Sections 4(a), 4(b) and 4(d) of the License.
In addition, if you combine or link compiled forms of this Software with
software that is licensed under the GPLv2 ("Combined Software") and if a
court of competent jurisdiction determines that the patent provision (Section
3), the indemnity provision (Section 9) or other Section of the License
conflicts with the conditions of the GPLv2, you may retroactively and
prospectively choose to deem waived or otherwise exclude such Section(s) of
the License, but only in their entirety and only with respect to the Combined
Software.

80
README.md Normal file
View File

@ -0,0 +1,80 @@
pdfio - PDF Read/Write Library
==============================
pdfio is a simple C library for reading and writing PDF files. The primary
goals of pdfio are:
- Read any PDF file with or without encryption or linearization
- Write PDF files without encryption or linearization
- Extract or embed useful metadata (author, creator, page information, etc.)
- "Filter" PDF files, for example to extract a range of pages or to embed fonts
that are missing from a PDF
- Provide access to objects used for each page
pdfio is *not* concerned with rendering or viewing a PDF file, although a PDF
RIP or viewer could be written using it.
Installing pdfio
----------------
pdfio comes with a portable makefile that will work on any POSIX-compliant
system with zlib installed. To make it, run:
make all
To test it, run:
make test
To install it, run:
make install
If you want a shared library, run:
make all-shared
make install-shared
The default installation location is "/usr/local". Pass the `prefix` variable
to make to install it to another location:
make install prefix=/some/other/directory
The makefile installs the pdfio header to "${prefix}/include", the library to
"${prefix}/lib", the `pkg-config` file to "${prefix}/lib/pkgconfig", the man
page to "${prefix}/share/man/man3", and the documentation to
"${prefix}/share/doc".
The makefile supports the following variables that can be specified in the make
command or as environment variables:
- `AR`: the library archiver (default "ar")
- `ARFLAGS`: options for the library archiver (default "cr")
- `CC`: the C compiler (default "cc")
- `CFLAGS`: options for the C compiler (default "")
- `CODESIGN_IDENTITY`: the identity to use when code signing the shared library
on macOS (default "Developer ID")
- `COMMONFLAGS`: options for the C compiler and linker (typically architecture
and optimization options, default is "-Os -g")
- `CPPFLAGS`: options for the C preprocessor (default "")
- `DESTDIR" and "DSTROOT`: specifies a root directory when installing
(default is "", specify only one)
- `DSOFLAGS`: options for the C compiler when linking the shared library
(default "")
- `LDFLAGS`: options for the C compiler when linking the test programs
(default "")
- `LIBS`: library options when linking the test programs (default "-lz")
- `RANLIB`: program that generates a table-of-contents in a library
(default "ranlib")
- `prefix`: specifies the installation directory (default "/usr/local")
Legal Stuff
-----------
pdfio is Copyright © 2021 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
files "LICENSE" and "NOTICE" for more information.

14
pdfio-common.c Normal file
View File

@ -0,0 +1,14 @@
//
// Common support functions for pdfio.
//
// Copyright © 2021 by Michael R Sweet.
//
// Licensed under Apache License v2.0. See the file "LICENSE" for more
// information.
//
//
// Include necessary headers...
//
#include "pdfio-private.h"

56
pdfio-private.h Normal file
View File

@ -0,0 +1,56 @@
//
// Private header file for pdfio.
//
// Copyright © 2021 by Michael R Sweet.
//
// Licensed under Apache License v2.0. See the file "LICENSE" for more
// information.
//
#ifndef PDFIO_PRIVATE_H
# define PDFIO_PRIVATE_H
//
// Include necessary headers...
//
//
// Visibility and other annotations...
//
# if defined(__has_extension) || defined(__GNUC__)
# define PDFIO_INTERNAL __attribute__ ((visibility("hidden")))
# define PDFIO_PRIVATE __attribute__ ((visibility("default")))
# define PDFIO_NONNULL(...) __attribute__ ((nonnull(__VA_ARGS__)))
# define PDFIO_NORETURN __attribute__ ((noreturn))
# else
# define PDFIO_INTERNAL
# define PDFIO_PRIVATE
# define PDFIO_NONNULL(...)
# define PDFIO_NORETURN
# endif // __has_extension || __GNUC__
//
// Debug macro...
//
# ifdef DEBUG
# define PDFIO_DEBUG(...) fprintf(stderr, __VA_ARGS__)
# else
# define PDFIO_DEBUG(...)
# endif // DEBUG
//
// Types and constants...
//
//
// Functions...
//
#endif // !PDFIO_PRIVATE_H

14
pdfio-read.c Normal file
View File

@ -0,0 +1,14 @@
//
// PDF reading functions for pdfio.
//
// Copyright © 2021 by Michael R Sweet.
//
// Licensed under Apache License v2.0. See the file "LICENSE" for more
// information.
//
//
// Include necessary headers...
//
#include "pdfio-private.h"

14
pdfio-write.c Normal file
View File

@ -0,0 +1,14 @@
//
// PDF writing functions for pdfio.
//
// Copyright © 2021 by Michael R Sweet.
//
// Licensed under Apache License v2.0. See the file "LICENSE" for more
// information.
//
//
// Include necessary headers...
//
#include "pdfio-private.h"

0
pdfio.3 Normal file
View File

57
pdfio.h Normal file
View File

@ -0,0 +1,57 @@
//
// Public header file for pdfio.
//
// Copyright © 2021 by Michael R Sweet.
//
// Licensed under Apache License v2.0. See the file "LICENSE" for more
// information.
//
#ifndef PDFIO_H
# define PDFIO_H
//
// Include necessary headers...
//
//
// C++ magic...
//
# ifdef __cplusplus
extern "C" {
# endif // __cplusplus
//
// Visibility and other annotations...
//
# if defined(__has_extension) || defined(__GNUC__)
# define PDFIO_PUBLIC __attribute__ ((visibility("default")))
# define PDFIO_FORMAT(a,b) __attribute__ ((__format__(__printf__, a,b)))
# else
# define PDFIO_PUBLIC
# define PDFIO_FORMAT(a,b)
# endif // __has_extension || __GNUC__
//
// Types and constants...
//
//
// Functions...
//
//
// C++ magic...
//
# ifdef __cplusplus
}
# endif // __cplusplus
#endif // !PDFIO_H

0
pdfio.html Normal file
View File

15
pdfio.md Normal file
View File

@ -0,0 +1,15 @@
Introduction
============
pdfio is a simple C library for reading and writing PDF files. The primary
goals of pdfio are:
- Read any PDF file with or without encryption or linearization
- Write PDF files without encryption or linearization
- Extract or embed useful metadata (author, creator, page information, etc.)
- "Filter" PDF files, for example to extract a range of pages or to embed fonts
that are missing from a PDF
- Provide access to objects used for each page
pdfio is *not* concerned with rendering or viewing a PDF file, although a PDF
RIP or viewer could be written using it.

7
pdfio.pc.in Normal file
View File

@ -0,0 +1,7 @@
Name: pdfio
Description: PDF read/write library
Version: 1.0
URL: https://www.msweet.org/pdfio
Requires.private: zlib >= 1.0
Libs: -L${prefix}/lib -lpdfio
Cflags: -I${prefix}/include

29
testpdfio.c Normal file
View File

@ -0,0 +1,29 @@
//
// Test program for pdfio.
//
// Copyright © 2021 by Michael R Sweet.
//
// Licensed under Apache License v2.0. See the file "LICENSE" for more
// information.
//
//
// Include necessary headers...
//
#include "pdfio.h"
//
// 'main()' - Main entry for test program.
//
int // O - Exit status
main(int argc, // I - Number of command-line arguments
char *argv[]) // I - Command-line arguments
{
(void)argc;
(void)argv;
return (0);
}