Imported from pngmeta-1.10.tar

Makefile.am

@@ -0,0 +1,33 @@
+## -*- makefile -*-
+##
+## Process this file with automake to produce Makefile.in
+##
+## $Source: /home/cur/djb1/develop/pngmeta/pngmeta/RCS/Makefile.am,v $
+##
+## $Id: Makefile.am,v 1.5 2000/01/31 14:15:53 djb1 Exp $
+##
+## (C) Copyright 1998, Dave Beckett, University of Kent at Canterbury
+##
+
+INCLUDES=-I$(PNG_INCLUDE) -I$(ZLIB_INCLUDE)
+
+bin_PROGRAMS = pngmeta
+
+AUTOMAKE_OPTIONS=foreign no-dependencies
+
+EXTRA_DIST=test1 test2 test3 test4\
+	   test1.xpt test2.xpt test3.xpt test4.xpt\
+	   8859.png ctzn0g04.png ct1n0g04.png\
+	   pngmeta.1 Makefile.old pngmeta.spec
+
+man_MANS=pngmeta.1
+
+TESTS=test1 test2 test3 test4
+
+test-results: pngmeta
+	./pngmeta -quiet ct1n0g04.png > test1.xpt
+	./pngmeta -soif -quiet ctzn0g04.png > test2.xpt
+	./pngmeta -html -quiet 8859.png > test3.xpt
+	./pngmeta -xrdf ct1n0g04.png > test4.xpt
+
+MAINTAINERCLEANFILES=test1.xpt test2.xpt test3.xpt test4.xpt

Makefile.in

@@ -0,0 +1,357 @@
+# Makefile.in generated automatically by automake 1.2 from Makefile.am
+
+# Copyright (C) 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+
+
+SHELL = /bin/sh
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+
+bindir = @bindir@
+sbindir = @sbindir@
+libexecdir = @libexecdir@
+datadir = @datadir@
+sysconfdir = @sysconfdir@
+sharedstatedir = @sharedstatedir@
+localstatedir = @localstatedir@
+libdir = @libdir@
+infodir = @infodir@
+mandir = @mandir@
+includedir = @includedir@
+oldincludedir = /usr/include
+
+DISTDIR =
+
+pkgdatadir = $(datadir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+
+top_builddir = .
+
+ACLOCAL = @ACLOCAL@
+AUTOCONF = @AUTOCONF@
+AUTOMAKE = @AUTOMAKE@
+AUTOHEADER = @AUTOHEADER@
+
+INSTALL = @INSTALL@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+transform = @program_transform_name@
+
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+CC = @CC@
+EXEEXT = @EXEEXT@
+MAKEINFO = @MAKEINFO@
+PACKAGE = @PACKAGE@
+PNG_INCLUDE = @PNG_INCLUDE@
+VERSION = @VERSION@
+ZLIB_INCLUDE = @ZLIB_INCLUDE@
+
+INCLUDES=-I$(PNG_INCLUDE) -I$(ZLIB_INCLUDE)
+
+bin_PROGRAMS = pngmeta
+
+AUTOMAKE_OPTIONS=foreign no-dependencies
+
+EXTRA_DIST=test1 test2 test3 test4\
+	   test1.xpt test2.xpt test3.xpt test4.xpt\
+	   8859.png ctzn0g04.png ct1n0g04.png\
+	   pngmeta.1 Makefile.old pngmeta.spec
+
+man_MANS=pngmeta.1
+
+TESTS=test1 test2 test3 test4
+
+MAINTAINERCLEANFILES=test1.xpt test2.xpt test3.xpt test4.xpt
+ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
+mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
+CONFIG_CLEAN_FILES = 
+PROGRAMS =  $(bin_PROGRAMS)
+
+
+DEFS = @DEFS@ -I. -I$(srcdir) 
+CPPFLAGS = @CPPFLAGS@
+LDFLAGS = @LDFLAGS@
+LIBS = @LIBS@
+pngmeta_SOURCES = pngmeta.c
+pngmeta_OBJECTS =  pngmeta.o
+pngmeta_LDADD = $(LDADD)
+pngmeta_LDFLAGS = 
+CFLAGS = @CFLAGS@
+COMPILE = $(CC) $(DEFS) $(INCLUDES) $(CPPFLAGS) $(CFLAGS)
+LINK = $(CC) $(CFLAGS) $(LDFLAGS) -o $@
+MANS = pngmeta.1
+
+NROFF = nroff
+DIST_COMMON =  README Makefile.am Makefile.in NEWS aclocal.m4 configure \
+configure.in install-sh missing mkinstalldirs
+
+
+DISTFILES = $(DIST_COMMON) $(SOURCES) $(HEADERS) $(TEXINFOS) $(EXTRA_DIST)
+
+TAR = gnutar
+GZIP = --best
+SOURCES = pngmeta.c
+OBJECTS = pngmeta.o
+
+default: all
+
+.SUFFIXES:
+.SUFFIXES: .c .o
+$(srcdir)/Makefile.in: $(srcdir)/Makefile.am $(top_srcdir)/configure.in $(ACLOCAL_M4) 
+	cd $(top_srcdir) && $(AUTOMAKE) --foreign Makefile
+
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	cd $(top_builddir) \
+	  && CONFIG_FILES=$@ CONFIG_HEADERS= $(SHELL) ./config.status
+
+$(ACLOCAL_M4):  configure.in 
+	cd $(srcdir) && $(ACLOCAL)
+
+config.status: $(srcdir)/configure
+	$(SHELL) ./config.status --recheck
+$(srcdir)/configure: $(srcdir)/configure.in $(ACLOCAL_M4) $(CONFIGURE_DEPENDENCIES)
+	cd $(srcdir) && $(AUTOCONF)
+
+mostlyclean-binPROGRAMS:
+
+clean-binPROGRAMS:
+	-test -z "$(bin_PROGRAMS)" || rm -f $(bin_PROGRAMS)
+
+distclean-binPROGRAMS:
+
+maintainer-clean-binPROGRAMS:
+
+install-binPROGRAMS: $(bin_PROGRAMS)
+	@$(NORMAL_INSTALL)
+	$(mkinstalldirs) $(DESTDIR)$(bindir)
+	@list='$(bin_PROGRAMS)'; for p in $$list; do \
+	  if test -f $$p; then \
+	    echo "  $(INSTALL_PROGRAM) $$p $(DESTDIR)$(bindir)/`echo $$p|sed '$(transform)'`"; \
+	     $(INSTALL_PROGRAM) $$p $(DESTDIR)$(bindir)/`echo $$p|sed '$(transform)'`; \
+	  else :; fi; \
+	done
+
+uninstall-binPROGRAMS:
+	@$(NORMAL_UNINSTALL)
+	list='$(bin_PROGRAMS)'; for p in $$list; do \
+	  rm -f $(DESTDIR)$(bindir)/`echo $$p|sed '$(transform)'`; \
+	done
+
+.c.o:
+	$(COMPILE) -c $<
+
+.s.o:
+	$(COMPILE) -c $<
+
+.S.o:
+	$(COMPILE) -c $<
+
+mostlyclean-compile:
+	-rm -f *.o core *.core
+
+clean-compile:
+
+distclean-compile:
+	-rm -f *.tab.c
+
+maintainer-clean-compile:
+
+pngmeta: $(pngmeta_OBJECTS) $(pngmeta_DEPENDENCIES)
+	@rm -f pngmeta
+	$(LINK) $(pngmeta_LDFLAGS) $(pngmeta_OBJECTS) $(pngmeta_LDADD) $(LIBS)
+install-man: $(MANS)
+	$(NORMAL_INSTALL)
+	$(mkinstalldirs) $(mandir)/man1
+	@sect=1;				\
+	inst=`echo "pngmeta" | sed '$(transform)'`.1; \
+	if test -f $(srcdir)/pngmeta.1; then file=$(srcdir)/pngmeta.1; \
+	else file=pngmeta.1; fi; \
+	echo " $(INSTALL_DATA) $$file $(mandir)/man$$sect/$$inst"; \
+	$(INSTALL_DATA) $$file $(mandir)/man$$sect/$$inst
+
+uninstall-man:
+	$(NORMAL_UNINSTALL)
+	inst=`echo "pngmeta" | sed '$(transform)'`.1; \
+	rm -f $(mandir)/man1/$$inst
+
+
+tags: TAGS
+
+ID: $(HEADERS) $(SOURCES) $(LISP)
+	here=`pwd` && cd $(srcdir) \
+	  && mkid -f$$here/ID $(SOURCES) $(HEADERS) $(LISP)
+
+TAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) $(LISP)
+	tags=; \
+	here=`pwd`; \
+	list='$(SOURCES) $(HEADERS)'; \
+	unique=`for i in $$list; do echo $$i; done | \
+	  awk '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	test -z "$(ETAGS_ARGS)$$unique$(LISP)$$tags" \
+	  || (cd $(srcdir) && etags $(ETAGS_ARGS) $$tags  $$unique $(LISP) -o $$here/TAGS)
+
+mostlyclean-tags:
+
+clean-tags:
+
+distclean-tags:
+	-rm -f TAGS ID
+
+maintainer-clean-tags:
+
+distdir = $(PACKAGE)-$(VERSION)
+top_distdir = $(distdir)
+
+# This target untars the dist file and tries a VPATH configuration.  Then
+# it guarantees that the distribution is self-contained by making another
+# tarfile.
+distcheck: dist
+	rm -rf $(distdir)
+	GZIP=$(GZIP) $(TAR) zxf $(distdir).tar.gz
+	mkdir $(distdir)/=build
+	mkdir $(distdir)/=inst
+	dc_install_base=`cd $(distdir)/=inst && pwd`; \
+	cd $(distdir)/=build \
+	  && ../configure --srcdir=.. --prefix=$$dc_install_base \
+	  && $(MAKE) \
+	  && $(MAKE) dvi \
+	  && $(MAKE) check \
+	  && $(MAKE) install \
+	  && $(MAKE) installcheck \
+	  && $(MAKE) dist
+	rm -rf $(distdir)
+	@echo "========================"; \
+	echo "$(distdir).tar.gz is ready for distribution"; \
+	echo "========================"
+dist: distdir
+	-chmod -R a+r $(distdir)
+	GZIP=$(GZIP) $(TAR) chozf $(distdir).tar.gz $(distdir)
+	rm -rf $(distdir)
+dist-all: distdir
+	-chmod -R a+r $(distdir)
+	GZIP=$(GZIP) $(TAR) chozf $(distdir).tar.gz $(distdir)
+	rm -rf $(distdir)
+distdir: $(DISTFILES)
+	rm -rf $(distdir)
+	mkdir $(distdir)
+	-chmod 777 $(distdir)
+	@for file in $(DISTFILES); do \
+	  d=$(srcdir); \
+	  test -f $(distdir)/$$file \
+	  || ln $$d/$$file $(distdir)/$$file 2> /dev/null \
+	  || cp -p $$d/$$file $(distdir)/$$file; \
+	done
+check-TESTS: $(TESTS)
+	@failed=0; all=0; \
+	srcdir=$(srcdir); export srcdir; \
+	for tst in $(TESTS); do \
+	  if test -f $$tst; then dir=.; \
+	  else dir="$(srcdir)"; fi; \
+	  if $(TESTS_ENVIRONMENT) $$dir/$$tst; then \
+	    all=`expr $$all + 1`; \
+	    echo "PASS: $$tst"; \
+	  elif test $$? -ne 77; then \
+	    all=`expr $$all + 1`; \
+	    failed=`expr $$failed + 1`; \
+	    echo "FAIL: $$tst"; \
+	  fi; \
+	done; \
+	if test "$$failed" -eq 0; then \
+	  banner="All $$all tests passed"; \
+	else \
+	  banner="$$failed of $$all tests failed"; \
+	fi; \
+	dashes=`echo "$$banner" | sed s/./=/g`; \
+	echo "$$dashes"; \
+	echo "$$banner"; \
+	echo "$$dashes"; \
+	test "$$failed" -eq 0
+info:
+dvi:
+check: all
+	$(MAKE) check-TESTS
+installcheck:
+install-exec: install-binPROGRAMS
+	@$(NORMAL_INSTALL)
+
+install-data: install-man
+	@$(NORMAL_INSTALL)
+
+install: install-exec install-data all
+	@:
+
+uninstall: uninstall-binPROGRAMS uninstall-man
+
+all: Makefile $(PROGRAMS) $(MANS)
+
+install-strip:
+	$(MAKE) INSTALL_PROGRAM='$(INSTALL_PROGRAM) -s' INSTALL_SCRIPT='$(INSTALL_PROGRAM)' install
+installdirs:
+	$(mkinstalldirs)  $(bindir) $(mandir)/man1
+
+
+mostlyclean-generic:
+	-test -z "$(MOSTLYCLEANFILES)" || rm -f $(MOSTLYCLEANFILES)
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-rm -f Makefile $(DISTCLEANFILES)
+	-rm -f config.cache config.log stamp-h stamp-h[0-9]*
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+
+maintainer-clean-generic:
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+	-test -z "$(BUILT_SOURCES)" || rm -f $(BUILT_SOURCES)
+mostlyclean:  mostlyclean-binPROGRAMS mostlyclean-compile \
+		mostlyclean-tags mostlyclean-generic
+
+clean:  clean-binPROGRAMS clean-compile clean-tags clean-generic \
+		mostlyclean
+
+distclean:  distclean-binPROGRAMS distclean-compile distclean-tags \
+		distclean-generic clean
+	rm -f config.status
+
+maintainer-clean:  maintainer-clean-binPROGRAMS maintainer-clean-compile \
+		maintainer-clean-tags maintainer-clean-generic \
+		distclean
+	@echo "This command is intended for maintainers to use;"
+	@echo "it deletes files that may require special tools to rebuild."
+	rm -f config.status
+
+.PHONY: default mostlyclean-binPROGRAMS distclean-binPROGRAMS \
+clean-binPROGRAMS maintainer-clean-binPROGRAMS uninstall-binPROGRAMS \
+install-binPROGRAMS mostlyclean-compile distclean-compile clean-compile \
+maintainer-clean-compile install-man uninstall-man tags \
+mostlyclean-tags distclean-tags clean-tags maintainer-clean-tags \
+distdir check-TESTS info dvi installcheck install-exec install-data \
+install uninstall all installdirs mostlyclean-generic distclean-generic \
+clean-generic maintainer-clean-generic clean mostlyclean distclean \
+maintainer-clean
+
+
+test-results: pngmeta
+	./pngmeta -quiet ct1n0g04.png > test1.xpt
+	./pngmeta -soif -quiet ctzn0g04.png > test2.xpt
+	./pngmeta -html -quiet 8859.png > test3.xpt
+	./pngmeta -xrdf ct1n0g04.png > test4.xpt
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:

Makefile.old

@@ -0,0 +1,68 @@
+#
+# basic makefile for pngmeta
+#
+
+PACKAGE=pngmeta
+VERSION=1.10
+
+ZLIB=../zlib
+LIBPNG=../libpng
+
+# Compile with GNU cc
+CC=gcc
+EXTRA_CC_FLAGS=-W -Wall
+
+# If you are not using gcc, set these options (must be an ANSI C compiler)
+#CC=cc
+#EXTRA_CC_FLAGS=
+
+
+CFLAGS= -DPACKAGE=\"$(PACKAGE)\" -DVERSION=\"$(VERSION)\" $(EXTRA_CC_FLAGS) -I$(LIBPNG) -I$(ZLIB) -g
+LDFLAGS=-L$(LIBPNG) -L$(ZLIB) -lpng -lz -lm
+
+# Need ranlib?
+#RANLIB=ranlib
+RANLIB=echo
+
+INSTALL=install
+
+# hierarchy where make install puts pngmeta
+prefix=/usr/local
+
+
+# Nothing needs configuring below here
+
+TEMPDIR=/tmp
+
+OBJS = pngmeta.o
+
+all: build
+
+build: pngmeta
+
+pngmeta: $(OBJS)
+	$(CC) -o pngmeta $(CCFLAGS) pngmeta.o $(LDFLAGS)
+
+TESTS=test1 test2 test3 test4
+
+check: pngmeta $(TESTS)
+	for test in $(TESTS); do \
+	  $$test; \
+	done
+
+test-results: pngmeta
+	./pngmeta -quiet ct1n0g04.png > test1.xpt
+	./pngmeta -soif -quiet ctzn0g04.png > test2.xpt
+	./pngmeta -html -quiet 8859.png > test3.xpt
+	./pngmeta -xrdf ct1n0g04.png > test4.xpt
+
+install: pngmeta
+	-@mkdir $(prefix)/bin
+	$(INSTALL) -c pngmeta $(prefix)/bin
+	$(INSTALL) -c pngmeta.1 $(prefix)/man/man1/pngmeta.1
+
+pngmeta.man: pngmeta.1
+	nroff -man $? > pngmeta.man
+
+clean:
+	rm -f *.o pngmeta.man pngmeta *~

NEWS

@@ -0,0 +1,40 @@
+Changes
+-------
+
+Version
+1.10	Updated to use latest zlib (1.1.3), libpng (1.0.5o).  Added
+	GNU style --options including --help page and --version
+
+1.9	Added -uri URI option to set URI for SOIF and RDF/XML output
+	For RDF/XML output don't escape values starting with <RDF
+
+1.8	Added RDF in XML output written by
+        Dan Brickley <daniel.brickley@bristol.ac.uk>
+
+1.7	Bug in printing out version.
+	Updated to use GNU configure stuff.
+
+1.6	libpng 1.0.0, zlib 1.1.1
+	Does SOIF by default when program is PngImage.sum
+	Version information output in usage and HTML.
+	Use libpng time formatting routine.
+
+1.4-1.5	libpng 0.87, 0.88, 0.88b, 0.89c and finally 0.90
+
+1.3	Tidied up HTML output.  Tested with libpng 0.86
+
+1.2	Added HTML output in <DL><DT>field</DT><DD><P>value</P></DD>...</DL>
+	form.
+
+1.1	Now outputs image meta data: format, colors (bitdepth),
+	width, height and image type in the style of the GIF
+	summariser for Harvest V1.4  Only outputs this for SOIF format.
+
+	Prints modification time chunk (tIME) contents if present in
+	RFC 1123 format, as suggested by PNG spec.
+
+1.0	For libpng 0.85 }
+			} Same functionality
+0.9	For libpng 0.81 }
+
+

README

@@ -0,0 +1,151 @@
+			       pngmeta
+			       =======
+
+This small filter program extracts metadata from PNG images and
+displays them as either HTML, SOIF, RDF/XML or simple fields and
+values.
+
+This software is distributed under the same copyright as the PNG
+Reference Library (libpng), upon which some of this code is based --
+see pngmeta.c for details.
+
+
+Requirements
+------------
+
+* An ANSI C compiler -- preferrably gcc
+* libpng (tested with 1.0.0, 1.0.03)
+* zlib   (tested with 1.1.1, 1.1.3)
+
+The latter two packages are available from ftp://ftp.uu.net/graphics/png/
+andr many other places, see the PNG Home Page for details.
+
+
+Installation
+------------
+
+Use the GNU configuration program:
+    ./configure
+    make
+
+This package needs the libpng and zlib libraries and header files and
+you have several ways to specify this if the above fails.
+
+If you have installed these packages in the default places (libs in
+usual lib path, includes under /usr/include), then they will be
+automatically found.  
+
+If you have compiled the packages but they remain in the source dirs,
+use one of these options to configure:
+
+  --with-png=DIR          DIR is root for libpng distribution
+  --with-zlib=DIR         DIR is root for libz distribution
+
+Note, this automatically happens the distributions are found in
+nearby directories with these names:
+  zlib-X.*    zlib   (subdirectories) or ../zlib
+  libpng-X.*  libpng (subdirectories) or ../libpng
+
+If the libraries and headers are installed in places that cannot be
+found by configure, you can specify the individual libraries and
+include paths with these options:
+
+  --with-zlib-lib=LIB     LIB is path to libz.a
+  --with-png-lib=LIB      LIB is path to libpng.a
+  --with-png-includes=DIR DIR is path where PNG header files can be
+                          found, defaults to /usr/include
+  --with-zlib-includes=DIR DIR is path where ZLIB header files can be
+                           found, defaults to /usr/include
+
+
+
+
+OR If all of that fails, use the Makefile.old, Edit the ZLIB and
+LIBPNG variables in the makefile to point to the zlib and libpng
+installation directories.  Pick a C compiler (by default set for gcc)
+and ranlib and then do a 'make -f Makefile.old'.
+
+
+Testing
+-------
+
+Three test PNG images are provided:
+  ct1n0g04.png ctzn0g04.png
+    which contain uncompressed and compressed text chunks respectively.
+    These are part of the PNG image test suite written by
+    Willem A.J. van Schaik <gwillem@ntuvax.ntu.ac.sg>
+
+  8859.png
+    All the printable ISO 8859-1 Latin 1 characters from hex codes
+    20 to 7E and A0 to FF provided by Chris Lilley <chris@w3.org>
+
+and these are all checked when 'make check' is run
+
+
+Usage Examples
+--------------
+
+mint% pngmeta goldhill.png 
+pngmeta: PNG meta data for goldhill.png:
+Title: GOLDHILL: Photo of hill in small European town.
+Copyright: Unknown
+Modification Time: 23 Apr 1995 01:15:08 +0000
+
+mint% pngmeta --soif ct1n0g04.png 
+@FILE { ct1n0g04.png
+image-format{3}:	PNG
+image-colors{1}:	4
+image-width{2}:	32
+image-height{2}:	32
+image-type{25}:	Grayscale, non-interlaced
+Title{8}:	PngSuite
+Author{49}:	Willem A.J. van Schaik
+(gwillem@ntuvax.ntu.ac.sg)
+Copyright{43}:	Copyright Willem van Schaik, Singapore 1995
+Description{239}:	A compilation of a set of images created to test the
+various color-types of the PNG format. Included are
+black&white, color, paletted, with alpha channel, with
+transparency formats. All bit-depths allowed according
+to the spec are present.
+Software{48}:	Created on a NeXTstation color using "pnmtopng".
+Disclaimer{9}:	Freeware.
+}
+
+
+See the manual page for more information on the options and usage.
+
+
+Implementation
+--------------
+
+The program contains a new function png_skip_till_end() that takes up
+the reading of the PNG data stream after the first IDAT has been
+detected.  It then copies through, checking the CRCs of them but not
+decompressing or processing them.  Finally, any remaining chunks are
+processed in the standard fashion.
+
+
+Copyright
+---------
+
+This code was modified from the code for png_read_end() from the
+libpng library.  See pngmeta.c for the full copyright headers - they
+have to remain in that file to comply with them.
+
+The GNU automake/autoconf configuration files and all that libpng and
+zlib searching stuff was written by me and I give permission for
+other people to use it to autoconfigure png and zlib in their
+programs, as long as you acknowledge me.
+
+
+Thanks
+------
+... to Rick Rodgers <rodgers@nlm.nih.gov> for the manual page.
+... to Dan Brickley <daniel.brickley@bristol.ac.uk> for the RDF/XML output.
+
+
+Dave Beckett
+D.J.Beckett@ukc.ac.uk
+http://www.cs.ukc.ac.uk/people/staff/djb1/
+31st January 2000
+

README_master.txt

@@ -1,6 +0,0 @@
-
-/*
-  This is the master branch of the "pmt" tree.
-  Individual projects are in separate branches,
-    e.g. pngcrush is in the "pngcrush" branch.
-*/

aclocal.m4

@@ -0,0 +1,103 @@
+dnl aclocal.m4 generated automatically by aclocal 1.2
+
+# Do all the work for Automake.  This macro actually does too much --
+# some checks are only needed if your package does certain things.
+# But this isn't really a big deal.
+
+# serial 1
+
+dnl Usage:
+dnl AM_INIT_AUTOMAKE(package,version, [no-define])
+
+AC_DEFUN(AM_INIT_AUTOMAKE,
+[AC_REQUIRE([AM_PROG_INSTALL])
+PACKAGE=[$1]
+AC_SUBST(PACKAGE)
+VERSION=[$2]
+AC_SUBST(VERSION)
+dnl test to see if srcdir already configured
+if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
+  AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
+fi
+ifelse([$3],,
+AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE")
+AC_DEFINE_UNQUOTED(VERSION, "$VERSION"))
+AC_REQUIRE([AM_SANITY_CHECK])
+AC_REQUIRE([AC_ARG_PROGRAM])
+dnl FIXME This is truly gross.
+missing_dir=`cd $ac_aux_dir && pwd`
+AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
+AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
+AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
+AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
+AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
+AC_REQUIRE([AC_PROG_MAKE_SET])])
+
+
+# serial 1
+
+AC_DEFUN(AM_PROG_INSTALL,
+[AC_REQUIRE([AC_PROG_INSTALL])
+test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL_PROGRAM}'
+AC_SUBST(INSTALL_SCRIPT)dnl
+])
+
+#
+# Check to make sure that the build environment is sane.
+#
+
+AC_DEFUN(AM_SANITY_CHECK,
+[AC_MSG_CHECKING([whether build environment is sane])
+# Just in case
+sleep 1
+echo timestamp > conftestfile
+# Do `set' in a subshell so we don't clobber the current shell's
+# arguments.  Must try -L first in case configure is actually a
+# symlink; some systems play weird games with the mod time of symlinks
+# (eg FreeBSD returns the mod time of the symlink's containing
+# directory).
+if (
+   set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
+   if test "[$]*" = "X"; then
+      # -L didn't work.
+      set X `ls -t $srcdir/configure conftestfile`
+   fi
+   if test "[$]*" != "X $srcdir/configure conftestfile" \
+      && test "[$]*" != "X conftestfile $srcdir/configure"; then
+
+      # If neither matched, then we have a broken ls.  This can happen
+      # if, for instance, CONFIG_SHELL is bash and it inherits a
+      # broken ls alias from the environment.  This has actually
+      # happened.  Such a system could not be considered "sane".
+      AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
+alias in your environment])
+   fi
+
+   test "[$]2" = conftestfile
+   )
+then
+   # Ok.
+   :
+else
+   AC_MSG_ERROR([newly created file is older than distributed files!
+Check your system clock])
+fi
+rm -f conftest*
+AC_MSG_RESULT(yes)])
+
+dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
+dnl The program must properly implement --version.
+AC_DEFUN(AM_MISSING_PROG,
+[AC_MSG_CHECKING(for working $2)
+# Run test in a subshell; some versions of sh will print an error if
+# an executable is not found, even if stderr is redirected.
+# Redirect stdin to placate older versions of autoconf.  Sigh.
+if ($2 --version) < /dev/null > /dev/null 2>&1; then
+   $1=$2
+   AC_MSG_RESULT(found)
+else
+   $1="$3/missing $2"
+   AC_MSG_RESULT(missing)
+fi
+AC_SUBST($1)])
+

configure.in

@@ -0,0 +1,145 @@
+dnl -*- shell-script -*-
+dnl
+dnl Process this file with autoconf to produce a configure script.
+dnl
+dnl $Source: /home/cur/djb1/develop/pngmeta/pngmeta/RCS/configure.in,v $
+dnl
+dnl $Id: configure.in,v 1.4 2000/01/31 13:52:24 djb1 Exp $
+dnl
+dnl (C) Copyright 1998, Dave Beckett, University of Kent at Canterbury
+dnl
+
+AC_REVISION($Revision: 1.4 $)
+AC_INIT(pngmeta.c)
+AM_INIT_AUTOMAKE(pngmeta, [1.10])
+AC_PREREQ(2.12)
+
+dnl Checks for programs.
+AC_PROG_CC
+
+
+
+
+# Allow use of libpng and zlib from raw distributions
+PNG_INCLUDE=/usr/include # prefix?
+AC_ARG_WITH(png,
+[  --with-png=DIR          DIR is root for libpng distribution])
+
+AC_MSG_CHECKING(for local copy of libpng distribution)
+if test "X$with_png" = "X"; then
+  for dir in libpng-[0-9]* libpng ../libpng-[0-9]* ../libpng; do
+    if test -d $dir -a -f $dir/png.h; then
+      with_png=$dir
+      LIBS="$LIBS -lpng"
+      break
+    fi
+  done
+fi
+if test "X$with_png" != "X"; then
+  AC_MSG_RESULT($with_png)
+  LDFLAGS="$LDFLAGS -L$with_png"
+  PNG_INCLUDE=$with_png
+else
+  AC_MSG_RESULT(no)
+fi
+
+
+ZLIB_INCLUDE=/usr/include # prefix?
+AC_ARG_WITH(zlib,
+[  --with-zlib=DIR         DIR is root for libz distribution])
+
+AC_MSG_CHECKING(for local copy of zlib distribution)
+if test "X$with_zlib" = "X"; then
+  for dir in zlib-[0-9]* zlib ../zlib-[0-9]* ../zlib; do
+    if test -d $dir -a -f $dir/zlib.h; then
+      with_zlib=$dir
+      LIBS="$LIBS -lz"
+      break
+    fi
+  done
+fi
+if test "X$with_zlib" != "X"; then
+  AC_MSG_RESULT($with_zlib)
+  LDFLAGS="$LDFLAGS -L$with_zlib"
+  ZLIB_INCLUDE=$with_zlib
+else
+  AC_MSG_RESULT(no)
+fi
+
+
+
+dnl Checks for libraries.
+
+# Allow use of libpng and zlib from installed areas
+AC_ARG_WITH(zlib_lib,
+[  --with-zlib-lib=LIB     LIB is path to libz.a])
+if test "X$with_zlib_lib" != "X"; then
+  LDFLAGS="$LDFLAGS -L$with_zlib_lib"
+fi
+
+AC_CHECK_LIB(z, zlibVersion, [LIBS="$LIBS -lz"],
+[ AC_MSG_ERROR(could not find libz)]
+)
+
+# libpng always needs this
+LIBS="$LIBS -lm"
+
+AC_ARG_WITH(png_lib,
+[  --with-png-lib=LIB      LIB is path to libpng.a])
+if test "X$with_png_lib" != "X"; then
+  LDFLAGS="$LDFLAGS -L$with_png_lib"
+fi
+
+AC_CHECK_LIB(png, png_create_read_struct, [LIBS="-lpng $LIBS"],
+[ AC_MSG_ERROR(could not find libpng)]
+)
+
+
+
+
+
+dnl Checks for header files.
+AC_MSG_CHECKING(for location of png includes)
+AC_ARG_WITH(png-includes,
+[  --with-png-includes=DIR DIR is path where PNG header files can be
+                          found, defaults to /usr/include])
+if test "X$with_png_includes" != "X"; then
+  PNG_INCLUDE=$with_png_includes
+fi
+if test ! -f "$PNG_INCLUDE/png.h"; then
+  AC_MSG_ERROR(could not find png.h in $PNG_INCLUDE)
+fi
+if test ! -f "$PNG_INCLUDE/pngconf.h"; then
+  AC_MSG_ERROR(could not find pngconf.h in $PNG_INCLUDE)
+fi
+AC_MSG_RESULT($PNG_INCLUDE)
+AC_SUBST(PNG_INCLUDE)
+
+
+AC_MSG_CHECKING(for location of zlib includes)
+AC_ARG_WITH(zlib-includes,
+[  --with-zlib-includes=DIR DIR is path where ZLIB header files can be
+                           found, defaults to /usr/include])
+if test "X$with_zlib_includes" != "X"; then
+  ZLIB_INCLUDE=$with_zlib_includes
+fi
+if test ! -f "$ZLIB_INCLUDE/zlib.h"; then
+  AC_MSG_ERROR(could not find zlib.h in $ZLIB_INCLUDE)
+fi
+if test ! -f "$ZLIB_INCLUDE/zconf.h"; then
+  AC_MSG_ERROR(could not find zconf.h in $ZLIB_INCLUDE)
+fi
+AC_MSG_RESULT($ZLIB_INCLUDE)
+AC_SUBST(ZLIB_INCLUDE)
+
+
+## I have no idea why autoconf makes me need to do this.
+## Of course on M$DOS it should be .exe
+EXEEXT=
+AC_SUBST(EXEEXT)
+
+dnl Checks for typedefs, structures, and compiler characteristics.
+
+dnl Checks for library functions.
+
+AC_OUTPUT(Makefile)

install-sh

@@ -0,0 +1,250 @@
+#!/bin/sh
+#
+# install - install a program, script, or datafile
+# This comes from X11R5 (mit/util/scripts/install.sh).
+#
+# Copyright 1991 by the Massachusetts Institute of Technology
+#
+# Permission to use, copy, modify, distribute, and sell this software and its
+# documentation for any purpose is hereby granted without fee, provided that
+# the above copyright notice appear in all copies and that both that
+# copyright notice and this permission notice appear in supporting
+# documentation, and that the name of M.I.T. not be used in advertising or
+# publicity pertaining to distribution of the software without specific,
+# written prior permission.  M.I.T. makes no representations about the
+# suitability of this software for any purpose.  It is provided "as is"
+# without express or implied warranty.
+#
+# Calling this script install-sh is preferred over install.sh, to prevent
+# `make' implicit rules from creating a file called install from it
+# when there is no Makefile.
+#
+# This script is compatible with the BSD install script, but was written
+# from scratch.  It can only install one file at a time, a restriction
+# shared with many OS's install programs.
+
+
+# set DOITPROG to echo to test this script
+
+# Don't use :- since 4.3BSD and earlier shells don't like it.
+doit="${DOITPROG-}"
+
+
+# put in absolute paths if you don't have them in your path; or use env. vars.
+
+mvprog="${MVPROG-mv}"
+cpprog="${CPPROG-cp}"
+chmodprog="${CHMODPROG-chmod}"
+chownprog="${CHOWNPROG-chown}"
+chgrpprog="${CHGRPPROG-chgrp}"
+stripprog="${STRIPPROG-strip}"
+rmprog="${RMPROG-rm}"
+mkdirprog="${MKDIRPROG-mkdir}"
+
+transformbasename=""
+transform_arg=""
+instcmd="$mvprog"
+chmodcmd="$chmodprog 0755"
+chowncmd=""
+chgrpcmd=""
+stripcmd=""
+rmcmd="$rmprog -f"
+mvcmd="$mvprog"
+src=""
+dst=""
+dir_arg=""
+
+while [ x"$1" != x ]; do
+    case $1 in
+	-c) instcmd="$cpprog"
+	    shift
+	    continue;;
+
+	-d) dir_arg=true
+	    shift
+	    continue;;
+
+	-m) chmodcmd="$chmodprog $2"
+	    shift
+	    shift
+	    continue;;
+
+	-o) chowncmd="$chownprog $2"
+	    shift
+	    shift
+	    continue;;
+
+	-g) chgrpcmd="$chgrpprog $2"
+	    shift
+	    shift
+	    continue;;
+
+	-s) stripcmd="$stripprog"
+	    shift
+	    continue;;
+
+	-t=*) transformarg=`echo $1 | sed 's/-t=//'`
+	    shift
+	    continue;;
+
+	-b=*) transformbasename=`echo $1 | sed 's/-b=//'`
+	    shift
+	    continue;;
+
+	*)  if [ x"$src" = x ]
+	    then
+		src=$1
+	    else
+		# this colon is to work around a 386BSD /bin/sh bug
+		:
+		dst=$1
+	    fi
+	    shift
+	    continue;;
+    esac
+done
+
+if [ x"$src" = x ]
+then
+	echo "install:	no input file specified"
+	exit 1
+else
+	true
+fi
+
+if [ x"$dir_arg" != x ]; then
+	dst=$src
+	src=""
+	
+	if [ -d $dst ]; then
+		instcmd=:
+	else
+		instcmd=mkdir
+	fi
+else
+
+# Waiting for this to be detected by the "$instcmd $src $dsttmp" command
+# might cause directories to be created, which would be especially bad 
+# if $src (and thus $dsttmp) contains '*'.
+
+	if [ -f $src -o -d $src ]
+	then
+		true
+	else
+		echo "install:  $src does not exist"
+		exit 1
+	fi
+	
+	if [ x"$dst" = x ]
+	then
+		echo "install:	no destination specified"
+		exit 1
+	else
+		true
+	fi
+
+# If destination is a directory, append the input filename; if your system
+# does not like double slashes in filenames, you may need to add some logic
+
+	if [ -d $dst ]
+	then
+		dst="$dst"/`basename $src`
+	else
+		true
+	fi
+fi
+
+## this sed command emulates the dirname command
+dstdir=`echo $dst | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
+
+# Make sure that the destination directory exists.
+#  this part is taken from Noah Friedman's mkinstalldirs script
+
+# Skip lots of stat calls in the usual case.
+if [ ! -d "$dstdir" ]; then
+defaultIFS='	
+'
+IFS="${IFS-${defaultIFS}}"
+
+oIFS="${IFS}"
+# Some sh's can't handle IFS=/ for some reason.
+IFS='%'
+set - `echo ${dstdir} | sed -e 's@/@%@g' -e 's@^%@/@'`
+IFS="${oIFS}"
+
+pathcomp=''
+
+while [ $# -ne 0 ] ; do
+	pathcomp="${pathcomp}${1}"
+	shift
+
+	if [ ! -d "${pathcomp}" ] ;
+        then
+		$mkdirprog "${pathcomp}"
+	else
+		true
+	fi
+
+	pathcomp="${pathcomp}/"
+done
+fi
+
+if [ x"$dir_arg" != x ]
+then
+	$doit $instcmd $dst &&
+
+	if [ x"$chowncmd" != x ]; then $doit $chowncmd $dst; else true ; fi &&
+	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dst; else true ; fi &&
+	if [ x"$stripcmd" != x ]; then $doit $stripcmd $dst; else true ; fi &&
+	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dst; else true ; fi
+else
+
+# If we're going to rename the final executable, determine the name now.
+
+	if [ x"$transformarg" = x ] 
+	then
+		dstfile=`basename $dst`
+	else
+		dstfile=`basename $dst $transformbasename | 
+			sed $transformarg`$transformbasename
+	fi
+
+# don't allow the sed command to completely eliminate the filename
+
+	if [ x"$dstfile" = x ] 
+	then
+		dstfile=`basename $dst`
+	else
+		true
+	fi
+
+# Make a temp file name in the proper directory.
+
+	dsttmp=$dstdir/#inst.$$#
+
+# Move or copy the file name to the temp name
+
+	$doit $instcmd $src $dsttmp &&
+
+	trap "rm -f ${dsttmp}" 0 &&
+
+# and set any options; do chmod last to preserve setuid bits
+
+# If any of these fail, we abort the whole thing.  If we want to
+# ignore errors from any of these, just make sure not to ignore
+# errors from the above "$doit $instcmd $src $dsttmp" command.
+
+	if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else true;fi &&
+	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else true;fi &&
+	if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else true;fi &&
+	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else true;fi &&
+
+# Now rename the file to the real destination.
+
+	$doit $rmcmd -f $dstdir/$dstfile &&
+	$doit $mvcmd $dsttmp $dstdir/$dstfile 
+
+fi &&
+
+
+exit 0

missing

@@ -0,0 +1,188 @@
+#! /bin/sh
+# Common stub for a few missing GNU programs while installing.
+# Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+# Franc,ois Pinard <pinard@iro.umontreal.ca>, 1996.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+# 02111-1307, USA.
+
+if test $# -eq 0; then
+  echo 1>&2 "Try \`$0 --help' for more information"
+  exit 1
+fi
+
+case "$1" in
+
+  -h|--h|--he|--hel|--help)
+    echo "\
+$0 [OPTION]... PROGRAM [ARGUMENT]...
+
+Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
+error status if there is no known handling for PROGRAM.
+
+Options:
+  -h, --help      display this help and exit
+  -v, --version   output version information and exit
+
+Supported PROGRAM values:
+  aclocal      touch file \`aclocal.m4'
+  autoconf     touch file \`configure'
+  autoheader   touch file \`config.h.in'
+  automake     touch all \`Makefile.in' files
+  bison        create \`y.tab.[ch]', if possible, from existing .[ch]
+  flex         create \`lex.yy.c', if possible, from existing .c
+  lex          create \`lex.yy.c', if possible, from existing .c
+  makeinfo     touch the output file
+  yacc         create \`y.tab.[ch]', if possible, from existing .[ch]"
+    ;;
+
+  -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
+    echo "missing - GNU libit 0.0"
+    ;;
+
+  -*)
+    echo 1>&2 "$0: Unknown \`$1' option"
+    echo 1>&2 "Try \`$0 --help' for more information"
+    exit 1
+    ;;
+
+  aclocal)
+    echo 1>&2 "\
+WARNING: \`$1' is missing on your system.  You should only need it if
+         you modified \`acinclude.m4' or \`configure.in'.  You might want
+         to install the \`Automake' and \`Perl' packages.  Grab them from
+         any GNU archive site."
+    touch aclocal.m4
+    ;;
+
+  autoconf)
+    echo 1>&2 "\
+WARNING: \`$1' is missing on your system.  You should only need it if
+         you modified \`configure.in'.  You might want to install the
+         \`Autoconf' and \`GNU m4' packages.  Grab them from any GNU
+         archive site."
+    touch configure
+    ;;
+
+  autoheader)
+    echo 1>&2 "\
+WARNING: \`$1' is missing on your system.  You should only need it if
+         you modified \`acconfig.h' or \`configure.in'.  You might want
+         to install the \`Autoconf' and \`GNU m4' packages.  Grab them
+         from any GNU archive site."
+    files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER([^):]*:\([^)]*\)).*/\1/p' configure.in`
+    if test -z "$files"; then
+      files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^):]*\)).*/\1/p' configure.in`
+      test -z "$files" || files="$files.in"
+    else
+      files=`echo "$files" | sed -e 's/:/ /g'`
+    fi
+    test -z "$files" && files="config.h.in"
+    touch $files
+    ;;
+
+  automake)
+    echo 1>&2 "\
+WARNING: \`$1' is missing on your system.  You should only need it if
+         you modified \`Makefile.am', \`acinclude.m4' or \`configure.in'.
+         You might want to install the \`Automake' and \`Perl' packages.
+         Grab them from any GNU archive site."
+    find . -type f -name Makefile.am -print \
+      | sed 's/^\(.*\).am$/touch \1.in/' \
+      | sh
+    ;;
+
+  bison|yacc)
+    echo 1>&2 "\
+WARNING: \`$1' is missing on your system.  You should only need it if
+         you modified a \`.y' file.  You may need the \`Bison' package
+         in order for those modifications to take effect.  You can get
+         \`Bison' from any GNU archive site."
+    rm -f y.tab.c y.tab.h
+    if [ $# -ne 1 ]; then
+        eval LASTARG="\${$#}"
+	case "$LASTARG" in
+	*.y)
+	    SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
+	    if [ -f "$SRCFILE" ]; then
+	         cp "$SRCFILE" y.tab.c
+	    fi
+	    SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
+	    if [ -f "$SRCFILE" ]; then
+	         cp "$SRCFILE" y.tab.h
+	    fi
+	  ;;
+	esac
+    fi
+    if [ ! -f y.tab.h ]; then
+	echo >y.tab.h
+    fi
+    if [ ! -f y.tab.c ]; then
+	echo 'main() { return 0; }' >y.tab.c
+    fi
+    ;;
+
+  lex|flex)
+    echo 1>&2 "\
+WARNING: \`$1' is missing on your system.  You should only need it if
+         you modified a \`.l' file.  You may need the \`Flex' package
+         in order for those modifications to take effect.  You can get
+         \`Flex' from any GNU archive site."
+    rm -f lex.yy.c
+    if [ $# -ne 1 ]; then
+        eval LASTARG="\${$#}"
+	case "$LASTARG" in
+	*.l)
+	    SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
+	    if [ -f "$SRCFILE" ]; then
+	         cp "$SRCFILE" lex.yy.c
+	    fi
+	  ;;
+	esac
+    fi
+    if [ ! -f lex.yy.c ]; then
+	echo 'main() { return 0; }' >lex.yy.c
+    fi
+    ;;
+
+  makeinfo)
+    echo 1>&2 "\
+WARNING: \`$1' is missing on your system.  You should only need it if
+         you modified a \`.texi' or \`.texinfo' file, or any other file
+         indirectly affecting the aspect of the manual.  The spurious
+         call might also be the consequence of using a buggy \`make' (AIX,
+         DU, IRIX).  You might want to install the \`Texinfo' package or
+         the \`GNU make' package.  Grab either from any GNU archive site."
+    file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'`
+    if test -z "$file"; then
+      file=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
+      file=`sed -n '/^@setfilename/ { s/.* \([^ ]*\) *$/\1/; p; q; }' $file`
+    fi
+    touch $file
+    ;;
+
+  *)
+    echo 1>&2 "\
+WARNING: \`$1' is needed, and you do not seem to have it handy on your
+         system.  You might have modified some files without having the
+         proper tools for further handling them.  Check the \`README' file,
+         it often tells you about the needed prerequirements for installing
+         this package.  You may also peek at any GNU archive site, in case
+         some other package would contain this missing \`$1' program."
+    exit 1
+    ;;
+esac
+
+exit 0

mkinstalldirs

@@ -0,0 +1,40 @@
+#! /bin/sh
+# mkinstalldirs --- make directory hierarchy
+# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created: 1993-05-16
+# Public domain
+
+# $Id: mkinstalldirs,v 1.10 1996/05/03 07:37:52 friedman Exp $
+
+errstatus=0
+
+for file
+do
+   set fnord `echo ":$file" | sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'`
+   shift
+
+   pathcomp=
+   for d
+   do
+     pathcomp="$pathcomp$d"
+     case "$pathcomp" in
+       -* ) pathcomp=./$pathcomp ;;
+     esac
+
+     if test ! -d "$pathcomp"; then
+        echo "mkdir $pathcomp" 1>&2
+
+        mkdir "$pathcomp" || lasterr=$?
+
+        if test ! -d "$pathcomp"; then
+  	  errstatus=$lasterr
+        fi
+     fi
+
+     pathcomp="$pathcomp/"
+   done
+done
+
+exit $errstatus
+
+# mkinstalldirs ends here

pngmeta.1

@@ -0,0 +1,139 @@
+.TH PNGMETA 1 "10 March 1998"
+.\"
+.\" Manual page for pngmeta - see end of page for copyright
+.\"
+.\" $Source: /home/cur/djb1/develop/pngmeta/pngmeta/RCS/pngmeta.1,v $
+.\"
+.\" $Id: pngmeta.1,v 1.4 2000/01/31 14:05:45 djb1 Exp $
+.\"
+.SH NAME
+pngmeta \- extract metadata from Portable Network Graphics (PNG) image files
+.SH SYNOPSIS
+.B pngmeta
+.RB [ \--soif ]
+.RB [ \--html ]
+.RB [ \--xrdf ]
+.RB [ \--all ]
+.RB [ \--quiet ]
+.RB [ \--uri\ URI ]
+.RI [ filename ]
+.SH DESCRIPTION
+The
+.I pngmeta
+filter outputs the metadata from Portable Network Graphics (PNG)
+format image files in one of these formats:
+.LP
+1. Simple key: value
+.LP
+2. SOIF format (as used by the Harvest system, version 1.4).
+.IP
+As such it can be used as a Summarizer for the Harvest Essence system.
+It could also be used by other indexers to extract data for
+indexing PNG images.
+.LP
+3. HTML page
+With each element as an element in a descriptive (DL) list
+.LP
+4. XML/RDF
+With each element as an RDF property on the source URI.
+.LP
+In the absence of options, the program operates as a filter,
+accepting input from stdin and sending output to stdout.
+If a single file name is given,
+it is assumed to correspond to a PNG file,
+and is processed.
+.SH FORMAT OPTIONS
+.TP
+.B \--soif
+Format output using (Harvest) SOIF format.  This is the default if
+the program is called PngImage.sum.
+.TP
+.B \--html
+Format output in HTML, with each field/value as an element in a descriptive
+.RB ( DL )
+list.
+.TP
+.B \--xrdf
+Format output in RDF/XML, with each field/value as an element in a descriptive
+.RB ( DL )
+list.
+.SH OTHER OPTIONS
+.TP
+.B \--all
+Output all the information about the image size, depth etc. even if
+not usually printed.
+.TP
+.B \--quiet
+Suppress the output of the banner for plain text output.
+.B \--uri URI
+Set the URI that is used for the SOIF and XML/RDF outputs.  By
+default this will be the filename, or "stdin" if this is the program
+is used as a filter.
+.TP
+.B \--help
+Show a usage message
+.TP
+.B \--version
+Show the program and library versions
+.SH FILES
+.TP 2.2i
+.I pngmeta
+executable
+.SH "SEE ALSO"
+.IR gif2png (1),
+.IR libpng (3),
+.IR pbm (1),
+.IR pgm (1),
+.IR pngcheck (1),
+.IR pngtopnm (1),
+.IR pnm (5),
+.IR pnmgamma (1),
+.IR pnmtopng (1),
+.IR ptot (1),
+.IR tiff2png (1),
+.IR zlib (3)
+.LP
+For information about Harvest and its SOIF format:
+.IP
+http://harvest.cs.colorado.edu/
+.LP
+For
+.IR PNG
+.IP
+http://www.cdrom.com/pub/png/
+.LP
+For
+.IR "libpng library:"
+.IP
+ftp://swrinde.nde.swri.edu/pub/png/src/
+.br
+http://www.cdrom.com/pub/png/src/
+.LP
+For
+.IR zlib
+.IP
+http://www.cdrom.com/pub/infozip/zlib/
+.LP
+For
+.IR "zlib library:"
+.IP
+http://www.cdrom.com/pub/infozip/zlib/
+.SH AUTHORS
+Version 1.10.
+Dave Beckett (D.J.Beckett@ukc.ac.uk).
+.LP
+The
+.IR zlib (3)
+library required by
+.I pngmeta
+is copyright (C) 1995-1996 Jean-loup Gailly and Mark Adler.
+Some code was modified from the code for the
+.IR libpng (3)
+library function
+.B png_read_end()
+which is copyright (c) Guy Eric Schalnat, Andreas Dilger, Glenn
+Randers-Pehrson and others -- see the source for details.
+.LP
+Original UNIX manual page by R. P. C. Rodgers,
+U.S. National Library of Medicine (rodgers@nlm.nih.gov).
+.\" end of man page

pngmeta.c

@@ -0,0 +1,569 @@
+/* pngmeta - PNG metadata filter to text, SOIF or HTML
+
+   For libpng 1.0.0 and zlib version 1.1.1 (or later)
+
+   tested up to libpng 1.0.5o and zlib 1.1.3
+   
+   (C) Copyright Dave Beckett <D.J.Beckett@ukc.ac.uk>,
+   University of Kent at Canterbury, UK
+   http://www.cs.ukc.ac.uk/people/staff/djb1/
+
+   RDF support by daniel.brickley@bristol.ac.uk
+
+   $Source: /home/cur/djb1/develop/pngmeta/pngmeta/RCS/pngmeta.c,v $
+
+   $Id: pngmeta.c,v 1.10 2000/01/31 13:51:46 djb1 Exp $
+   
+   The function png_skip_till_end() is a modified version of
+   png_read_end() from libpng 1.0.0 by
+   Guy Eric Schalnat, Group 42, Inc.
+   Andreas Eric Dilger and Glenn Randers-Pehrson
+   as well as many others.  The original copyright message follows.
+*/
+
+/* pngread.c - read a PNG file
+ *
+ * libpng 1.0.0
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
+ * Copyright (c) 1996, 1997 Andreas Dilger
+ * Copyright (c) 1998, Glenn Randers-Pehrson
+ * March 8, 1998
+ *
+ * This file contains routines that an application calls directly to
+ * read a PNG file or stream.
+ */
+
+/* png.h - header file for PNG reference library
+ *
+
+ [DJB: edited to just leave COPYRIGHT NOTICE ]
+
+ *
+ * COPYRIGHT NOTICE:
+ *
+ * The PNG Reference Library is supplied "AS IS".  The Contributing Authors
+ * and Group 42, Inc. disclaim all warranties, expressed or implied,
+ * including, without limitation, the warranties of merchantability and of
+ * fitness for any purpose.  The Contributing Authors and Group 42, Inc.
+ * assume no liability for direct, indirect, incidental, special, exemplary,
+ * or consequential damages, which may result from the use of the PNG
+ * Reference Library, even if advised of the possibility of such damage.
+ *
+ * Permission is hereby granted to use, copy, modify, and distribute this
+ * source code, or portions hereof, for any purpose, without fee, subject
+ * to the following restrictions:
+ * 1. The origin of this source code must not be misrepresented.
+ * 2. Altered versions must be plainly marked as such and must not be
+ *    misrepresented as being the original source.
+ * 3. This Copyright notice may not be removed or altered from any source or
+ *    altered source distribution.
+ *
+ * The Contributing Authors and Group 42, Inc. specifically permit, without
+ * fee, and encourage the use of this source code as a component to
+ * supporting the PNG file format in commercial products.  If you use this
+ * source code in a product, acknowledgment is not required but would be
+ * appreciated.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <strings.h>
+
+/* Needed to access various internal PNG chunk routines */
+#define PNG_INTERNAL
+#include <png.h>
+
+#ifdef __TURBOC__
+#include <mem.h>
+#endif
+
+/* defined so I can write to a file on gui/windowing platforms */
+/*  #define STDERR stderr  */
+#ifdef MSDOS
+#define STDERR stdout	/* for DOS */
+#else
+#define STDERR stderr
+#endif
+
+void png_skip_till_end PNGARG((png_structp png_ptr, png_infop info));
+void html_quote_string PNGARG((FILE *fd, const char *string));
+void print_init PNGARG((FILE *fd, int output_type, const char *filename, const char *uri, int quiet));
+void print_kv PNGARG((FILE *fd, int output_type, const char *field, const char *value));
+void print_finish PNGARG((FILE *fd, int output_type));
+void user_warning_fn PNGARG((png_structp png_ptr, png_const_charp warning_msg));
+
+
+const char *progname;
+
+
+/* read data, ignoring IDATs, till the end of the png file.
+   
+   Will not read past the end of the file, will verify the end is
+   accurate, and will read any comments or time information at the
+   end of the file, if info is not NULL. */
+void
+png_skip_till_end(png_structp png_ptr, png_infop info_ptr)
+{
+   png_byte chunk_length[4];
+   png_uint_32 length;
+
+   length=png_ptr->idat_size;
+   
+  /* Skip IDAT chunks */
+   do
+   {
+     png_crc_finish(png_ptr, length);
+
+     png_read_data(png_ptr, chunk_length, 4);
+     length = png_get_uint_32(chunk_length);
+
+     png_reset_crc(png_ptr);
+     png_crc_read(png_ptr, png_ptr->chunk_name, 4);
+   } while (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4));
+   
+   png_ptr->mode |= PNG_AFTER_IDAT;
+   
+   do
+   {
+     if (!png_memcmp(png_ptr->chunk_name, png_IHDR, 4))
+       png_handle_IHDR(png_ptr, info_ptr, length);
+     else if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
+     {
+       /* Zero length IDATs are legal after the last IDAT has been
+        * read, but not after other chunks have been read.
+        */
+       if (length > 0 || png_ptr->mode & PNG_AFTER_IDAT)
+         png_error(png_ptr, "Too many IDAT's found");
+       else
+         png_crc_finish(png_ptr, 0);
+     }
+#if defined(PNG_READ_tIME_SUPPORTED)
+     else if (!png_memcmp(png_ptr->chunk_name, png_tIME, 4))
+       png_handle_tIME(png_ptr, info_ptr, length);
+#endif
+#if defined(PNG_READ_tEXt_SUPPORTED)
+     else if (!png_memcmp(png_ptr->chunk_name, png_tEXt, 4))
+       png_handle_tEXt(png_ptr, info_ptr, length);
+#endif
+#if defined(PNG_READ_zTXt_SUPPORTED)
+     else if (!png_memcmp(png_ptr->chunk_name, png_zTXt, 4))
+       png_handle_zTXt(png_ptr, info_ptr, length);
+#endif
+     else if (!png_memcmp(png_ptr->chunk_name, png_IEND, 4))
+       png_handle_IEND(png_ptr, info_ptr, length);
+     else
+       png_handle_unknown(png_ptr, info_ptr, length);
+
+     if (!(png_ptr->mode & PNG_HAVE_IEND)) {
+       png_read_data(png_ptr, chunk_length, 4);
+       length = png_get_uint_32(chunk_length);
+     
+       png_reset_crc(png_ptr);
+       png_crc_read(png_ptr, png_ptr->chunk_name, 4);
+     }
+     
+   } while (!(png_ptr->mode & PNG_HAVE_IEND));
+}
+
+
+#define OUTPUT_TEXT 0
+#define OUTPUT_SOIF 1
+#define OUTPUT_HTML 2
+#define OUTPUT_XRDF 3
+
+
+void html_quote_string(FILE *fd, const char *string)
+{
+  char c;
+  char const * p=string;
+  while ((c = *p++)) {
+    if (c == '&')
+      fputs("&amp;", fd);
+    else if (c== '<')
+      fputs("&lt;", fd);
+    else if (c== '>')
+      fputs("&gt;", fd);
+    else
+      fputc(c, fd);
+  }
+}
+
+
+void print_init(FILE *fd, int output_type, const char *filename,
+                const char *uri, int quiet)
+{
+  switch (output_type)
+    {
+      case OUTPUT_SOIF:
+        if (uri)
+          fprintf(fd, "@FILE { %s\n", uri);
+        else
+          fprintf(fd, "@FILE { %s\n", filename);
+	break;
+      
+      case OUTPUT_HTML:
+	fputs("<!DOCTYPE HTML PUBLIC '-//W3C//DTD HTML 3.2//EN'>\n", fd);
+	fputs("<HTML>\n<HEAD>\n<TITLE>Metadata for ", fd);
+	html_quote_string(fd, filename); 
+	fputs("</TITLE>\n</HEAD>\n<BODY>\n<H1>Metadata for ", fd);
+	html_quote_string(fd, filename);
+	fputs("</H1>\n<DL>\n", fd);
+	break;
+      
+      case OUTPUT_XRDF:
+        fputs("<rdf:RDF xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#'\n", fd);
+        fputs("         xmlns:s='http://www.tasi.ac.uk/rdf/vocab#'\n", fd);
+        fputs("         xmlns:dc='http://purl.org/dc/elements/1.0/'>\n", fd);
+
+        if (uri)
+          fprintf(fd, "  <s:Image about=\"%s\"\n", uri);
+        else {
+          fputs("  <s:Image about=\"", fd);
+          html_quote_string(fd, filename); 
+          fputs("\">\n", fd);
+        }
+        fputs("    <dc:type>image/png</dc:type>\n", fd);
+
+        break;
+
+      default: /* OUTPUT_TEXT */
+        if (!quiet)
+          fprintf(fd, "%s: PNG metadata for %s:\n", progname, filename);
+    }
+}
+
+
+void print_kv(FILE *fd, int output_type, const char *field, const char *value) 
+{
+  if (*value)
+    switch (output_type)
+      {
+	case OUTPUT_SOIF:
+	  /* SOIF: "KEY{SIZE}:\tVALUE\n" */
+	  fprintf(fd, "%s{%d}:\t%s\n", field, (int)strlen(value), value);
+	  break;
+	
+	case OUTPUT_HTML:
+	  /* HTML: <DT>field</DT>\n<DD><P>value</P></DD>\n" */
+	  fputs("  <DT>", fd);
+	  html_quote_string(fd, field);
+	  fputs("</DT>\n  <DD><P>", fd);
+	  html_quote_string(fd, value);
+	  fputs("</P></DD>\n\n", fd);
+	  break;
+	
+        case OUTPUT_XRDF:
+          /* RDF: simple flat text properties  */
+
+          /* start tag */
+          fputs("    <s:", fd);
+          html_quote_string(fd, field);
+          fputs(">", fd);
+
+          /* If value starts with <RDF, assume it is RDF and don't
+             HTML escape it */
+          if (!strncasecmp(value, "<RDF", 4))
+            fputs(value, fd);
+          else
+            html_quote_string(fd, value);
+
+          /* end tag */
+          fputs("</s:", fd);
+          html_quote_string(fd, field);
+          fputs(">\n", fd);
+          break;
+
+	default: /* OUTPUT_TEXT */
+	  fprintf(fd, "%s: %s\n", field, value);
+      }
+}
+
+
+void print_finish(FILE *fd, int output_type)
+{
+  switch (output_type)
+    {
+      case OUTPUT_SOIF:
+	fputs("}\n", fd);
+	break;
+      
+      case OUTPUT_HTML:
+	fprintf(fd, "</DL>\n\n<SMALL>Created by %s V%s</SMALL>\n\n</BODY>\n</HTML>\n", progname, VERSION);
+	break;
+	
+      case OUTPUT_XRDF:
+        fprintf(fd, "  </s:Image>\n</rdf:RDF>\n\n<!--Created by %s V%s -->\n", progname, VERSION);
+        break;
+        
+      /* case OUTPUT_TEXT / default */
+      /* do nothing */
+    }
+}
+
+
+static const char *png_color_type[] = {
+  "Grayscale",
+  "Undefined type",
+  "RGB",
+  "Palette",
+  "Grayscale with Alpha",
+  "Undefined type",
+  "RGB with Alpha"
+};
+
+
+/* Throw away warnings (die on errors as usual) */
+void user_warning_fn (png_structp png_ptr, png_const_charp warning_msg)
+{
+
+}
+
+
+
+/* MAIN BODY */
+int main(int argc, char *argv[])
+{
+  png_structp png_ptr;
+  png_infop info_ptr;
+  png_infop end_info;
+  FILE *in_fp = stdin;
+  FILE *out_fp = stdout;
+  const char *pngfile = "stdin";
+  int output_type = OUTPUT_TEXT;
+  int quiet = 0;
+  int all = 0;
+  int usingfile = 0;
+  int usage = 0;
+  int help = 0;
+  int version = 0;
+  int i;
+  char *p;
+  char *uri= NULL;
+  
+
+  /* Make progname just become the program name, not the full path -
+     this is file system type specific since / is used as the
+     separator */
+  progname = *argv++; argc--;
+  if((p=strrchr(progname, '/'))) 
+    progname=p+1;
+  
+  
+  /* Automagically output SOIF when this program is called PngImage.sum */
+  if(!strcmp(progname, "PngImage.sum"))
+    output_type = OUTPUT_SOIF;    
+
+  /* Automagically output RDF when this program is called PngImage.rdfsum */
+  if(!strcmp(progname, "PngImage.rdfsum"))
+    output_type = OUTPUT_XRDF;    
+
+  
+  while (*argv) {
+    char *arg=argv[0];
+    int l=strlen(arg);
+    
+    if (*arg != '-')
+      break;
+
+    if(l < 2) {
+      usage=1;
+      break;
+    }
+    
+    if (arg[0] == '-' && arg[1] != '-') {
+      arg++;
+    } else {
+      /* found '--' or equivalent */
+      if (l==2) {
+        argv++;
+        argc--;
+        break;
+      }
+      arg+=2;
+    }
+    
+
+    if (!strcmp(arg, "soif")) {
+      output_type = OUTPUT_SOIF;
+    } else if (!strcmp(arg, "html")) {
+      output_type = OUTPUT_HTML;
+    } else if (!strcmp(arg, "xrdf")) {
+      output_type = OUTPUT_XRDF;
+    } else if (!strcmp(arg, "quiet")) {
+      quiet = 1;
+    } else if (!strcmp(arg, "all")) {
+      all = 1;
+    } else if (!strcmp(arg, "help")) {
+      help = 1;
+      break;
+    } else if (!strcmp(arg, "version")) {
+      version = 1;
+      break;
+    } else if (!strcmp(arg, "uri")) {
+      argv++;
+      argc--;
+      if (!argc) {
+        fprintf(STDERR, "%s: option --uri requires an argument\n", progname);
+        usage=1;
+      } else {
+        uri=*argv;
+      }
+    } else {
+      fprintf(STDERR, "%s: invalid option -- %s\n", progname, arg);
+      usage = 1;
+      break;
+    }
+    argv++;
+    argc--;
+  }
+
+  if (!usage && !help && !version) {
+    if (!argc)
+      /* nop */;
+    else if (argc == 1) {
+      pngfile = *argv;
+      if (!(in_fp = fopen (pngfile, "rb"))) {
+	fprintf(STDERR, "%s: Could not open input file %s - ", progname, pngfile);
+	fflush(STDERR);
+	perror(NULL);
+	exit(1);
+      }
+      usingfile = 1;
+    } else {
+      usage = 1;
+    }
+  } 
+
+
+  if(usage) {
+    fprintf(STDERR, "Try `%s --help' for more information\n", progname);
+    exit(1);
+  }
+  
+  
+  if (help || version) {
+    fprintf(STDERR, "%s %s (built with libpng %s and zlib %s)\n", progname, VERSION, PNG_LIBPNG_VER_STRING, ZLIB_VERSION);
+    if (help) {
+      fprintf(STDERR, "USAGE: %s [OPTIONS]... FILE\n", progname);
+      fprintf(STDERR, "Display metadata information from a PNG image in FILE\n\n");
+      fprintf(STDERR, "  --all          output information about image size etc.\n");
+      fprintf(STDERR, "  --html         format output in HTML format\n");
+      fprintf(STDERR, "  --quiet        suppress output of banner\n");
+      fprintf(STDERR, "  --soif         format output in SOIF format\n");
+      fprintf(STDERR, "  --uri URI      set the URI for SOIF and XML/RDF formats\n");
+      fprintf(STDERR, "  --xrdf         format output in XML/RDF format\n");
+      fprintf(STDERR, "  --help         display this help and exit\n");
+      fprintf(STDERR, "  --version      output version information and exit\n");
+      fprintf(STDERR, "\n(C) Copyright 2000 Dave Beckett, University of Kent at Canterbury\nhttp://www.cs.ukc.ac.uk/people/staff/djb1/\n");
+      fprintf(STDERR, "RDF output by daniel.brickley@bristol.ac.uk\n");
+    }
+    exit(1);
+  }
+
+  png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING,
+                                   (void*)NULL, NULL, user_warning_fn);
+  if (!png_ptr) {
+    fprintf(STDERR, "%s: libpng failed to create read structure\n", progname);
+    exit(1);
+  }
+
+  info_ptr = png_create_info_struct(png_ptr);
+  if (!info_ptr)
+  {
+    png_destroy_read_struct(&png_ptr, (png_infopp)NULL, (png_infopp)NULL);
+    fprintf(STDERR, "%s: libpng failed to create info structure\n", progname);
+    exit(1);
+  }
+
+  /* This is necessary to zero text pointers */
+  end_info = png_create_info_struct(png_ptr);
+  if (!end_info)
+  {
+    png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
+    fprintf(STDERR, "%s: libpng failed to create end info structure\n", progname);
+    exit(1);
+  }
+  
+
+  if (setjmp(png_ptr->jmpbuf))
+  {
+    png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
+    fprintf(STDERR, "%s: libpng read error for %s\n", progname, pngfile);
+    fclose(in_fp);
+    exit(1);
+  }
+  
+
+  /* Initialise data input */
+  png_init_io(png_ptr, in_fp);
+  png_read_info(png_ptr, info_ptr);
+  
+  print_init(out_fp, output_type, pngfile, uri, quiet);
+  
+  if (output_type == OUTPUT_SOIF || all) {
+/*
+  Harvest V1.4 GIF summarizer outputs this:
+    
+  image-format: GIF87|GIF89
+  image-colors: [bits-per-pixel]
+  Comment: [GIF Comment Extension text]
+  image-width: [w]
+  image-height: [h]
+  image-type: interlaced|non-interlaced
+  thumbnail-data: [data for 64x64 GIF image]
+  
+  The latter is done via:
+    giftopnm giffile | pnmscale -width 64 -height 64 | ppmquant 256 | ppmtogif
+    
+*/
+    char value[80]; /* Sorry for the fixed-size buffer (big enough) */
+    
+    print_kv(out_fp, output_type, "image-format", "PNG");
+    
+    sprintf(value, "%d", info_ptr->bit_depth);
+    print_kv(out_fp, output_type, "image-colors", value);
+    
+    sprintf(value, "%ld", info_ptr->width);
+    print_kv(out_fp, output_type, "image-width", value);
+    
+    sprintf(value, "%ld", info_ptr->height);
+    print_kv(out_fp, output_type, "image-height", value);
+    
+    sprintf(value, "%s, %sinterlaced",
+	    (info_ptr->color_type>6) ? png_color_type[1] : png_color_type[info_ptr->color_type],
+	    info_ptr->interlace_type ? "" : "non-");
+
+    print_kv(out_fp, output_type, "image-type", value);
+  }
+  
+  /* Local function */
+  png_skip_till_end(png_ptr, end_info);
+  
+  
+  /* Print text keywords before IDAT */
+  for (i = 0; i < info_ptr->num_text; i++)
+    print_kv(out_fp, output_type, info_ptr->text[i].key, info_ptr->text[i].text);
+  
+  /* Print text keywords after IDAT */
+  for (i = 0; i < end_info->num_text; i++)
+    print_kv(out_fp, output_type, end_info->text[i].key, end_info->text[i].text);
+  
+  /* Print modification time (tIME chunk) if present */
+  if (info_ptr->valid & PNG_INFO_tIME)
+    print_kv(out_fp, output_type, "Modification Time",
+             png_convert_to_rfc1123(png_ptr, &info_ptr->mod_time));
+  else if (end_info->valid & PNG_INFO_tIME)
+    print_kv(out_fp, output_type, "Modification Time",
+             png_convert_to_rfc1123(png_ptr, &end_info->mod_time));
+  
+  print_finish(out_fp, output_type);
+  
+  
+  /* Cleanup */
+  png_read_destroy(png_ptr, info_ptr, end_info);
+
+  fclose(in_fp);
+  
+  exit (0);
+}

pngmeta.spec

@@ -0,0 +1,46 @@
+#
+# pngmeta -- Get Metadata from PNG images
+#
+%define version 1.10
+%define name pngmeta
+Summary: Display metadata information from PNG images
+Name: %{name}
+Version: %{version}
+Release: 1
+Copyright: Freely Distributable
+Group: Applications/Graphics
+Source: http://www.cs.ukc.ac.uk/people/staff/djb1/software/%{name}-%{version}.tar.gz
+URL: http://www.cs.ukc.ac.uk/people/staff/djb1/software
+Provides: pngmeta
+Requires: libpng.so.2 zlib
+BuildRoot: /tmp/rpmbuild_%{name}
+
+%description
+This small filter program extracts metadata from PNG images and
+displays them as either HTML, SOIF, RDF/XML or simple fields and
+values.
+
+%prep
+rm -rf $RPM_BUILD_ROOT
+rm -rf $RPM_BUILD_DIR/%{name}-%{version}
+
+%setup
+
+%build
+CFLAGS="$RPM_OPT_FLAGS" ./configure --prefix=/usr
+make
+
+%install
+make install-strip prefix=$RPM_BUILD_ROOT/usr
+
+%files
+
+%doc %attr (-,root,root) NEWS
+%doc %attr (-,root,root) README
+
+%attr (-,root,root) /usr/man/man1/pngmeta.1
+%attr (755,root,root) /usr/bin/pngmeta
+
+%clean
+rm -rf $RPM_BUILD_ROOT
+rm -rf $RPM_BUILD_DIR/%{name}-%{version}

test1

@@ -0,0 +1,3 @@
+#!/bin/sh
+echo 'Testing uncompressed text chunk - tEXT (plain format)'
+./pngmeta -quiet ct1n0g04.png | diff -c test1.xpt -

test1.xpt

@@ -0,0 +1,11 @@
+Title: PngSuite
+Author: Willem A.J. van Schaik
+(gwillem@ntuvax.ntu.ac.sg)
+Copyright: Copyright Willem van Schaik, Singapore 1995
+Description: A compilation of a set of images created to test the
+various color-types of the PNG format. Included are
+black&white, color, paletted, with alpha channel, with
+transparency formats. All bit-depths allowed according
+to the spec are present.
+Software: Created on a NeXTstation color using "pnmtopng".
+Disclaimer: Freeware.

test2

@@ -0,0 +1,3 @@
+#!/bin/sh
+echo 'Testing compressed text chunk   - zTXT (SOIF format)'
+./pngmeta -soif -quiet ctzn0g04.png | diff -c test2.xpt -

test2.xpt

@@ -0,0 +1,18 @@
+@FILE { ctzn0g04.png
+image-format{3}:	PNG
+image-colors{1}:	4
+image-width{2}:	32
+image-height{2}:	32
+image-type{25}:	Grayscale, non-interlaced
+Title{8}:	PngSuite
+Author{49}:	Willem A.J. van Schaik
+(gwillem@ntuvax.ntu.ac.sg)
+Copyright{43}:	Copyright Willem van Schaik, Singapore 1995
+Description{239}:	A compilation of a set of images created to test the
+various color-types of the PNG format. Included are
+black&white, color, paletted, with alpha channel, with
+transparency formats. All bit-depths allowed according
+to the spec are present.
+Software{48}:	Created on a NeXTstation color using "pnmtopng".
+Disclaimer{9}:	Freeware.
+}

test3

@@ -0,0 +1,3 @@
+#!/bin/sh
+echo 'Testing HTML output'
+./pngmeta -html -quiet 8859.png | diff -c test3.xpt -

test3.xpt

@@ -0,0 +1,39 @@
+<!DOCTYPE HTML PUBLIC '-//W3C//DTD HTML 3.2//EN'>
+<HTML>
+<HEAD>
+<TITLE>Metadata for 8859.png</TITLE>
+</HEAD>
+<BODY>
+<H1>Metadata for 8859.png</H1>
+<DL>
+  <DT>Title</DT>
+  <DD><P>ISO 8859-1 characters</P></DD>
+
+  <DT>Description</DT>
+  <DD><P>Here are all the printable characters from the 
+ISO Latin-1 coded character set: hex codes 20 to 7E
+and A0 to FF. That includes a space (20) and a 
+non-breaking space (A0).</P></DD>
+
+  <DT>Test data</DT>
+  <DD><P>! " # $ % &amp; ' ( ) * + , - . /
+0 1 2 3 4 5 6 7 8 9 : ; &lt; = &gt; ?
+@ A B C D E F G H I J K L M N O
+P Q R S T U V W X Y Z [ \ ] ^ _
+` a b c d e f g h i j k l m n o
+p q r s t u v w x y z { | } ~
+
+<EFBFBD> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20>
+<EFBFBD> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20>
+<EFBFBD> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20>
+<EFBFBD> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20>
+<EFBFBD> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20>
+<EFBFBD> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20>
+</P></DD>
+
+</DL>
+
+<SMALL>Created by pngmeta V1.10</SMALL>
+
+</BODY>
+</HTML>

test4

@@ -0,0 +1,3 @@
+#!/bin/sh
+echo 'Testing RDF/XML output'
+./pngmeta -xrdf ct1n0g04.png | diff -c test4.xpt -

test4.xpt

@@ -0,0 +1,20 @@
+<rdf:RDF xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#'
+         xmlns:s='http://www.tasi.ac.uk/rdf/vocab#'
+         xmlns:dc='http://purl.org/dc/elements/1.0/'>
+  <s:Image about="ct1n0g04.png">
+    <dc:type>image/png</dc:type>
+    <s:Title>PngSuite</s:Title>
+    <s:Author>Willem A.J. van Schaik
+(gwillem@ntuvax.ntu.ac.sg)</s:Author>
+    <s:Copyright>Copyright Willem van Schaik, Singapore 1995</s:Copyright>
+    <s:Description>A compilation of a set of images created to test the
+various color-types of the PNG format. Included are
+black&amp;white, color, paletted, with alpha channel, with
+transparency formats. All bit-depths allowed according
+to the spec are present.</s:Description>
+    <s:Software>Created on a NeXTstation color using "pnmtopng".</s:Software>
+    <s:Disclaimer>Freeware.</s:Disclaimer>
+  </s:Image>
+</rdf:RDF>
+
+<!--Created by pngmeta V1.10 -->