* configure.ac: Add check for zlib and libpng. Do not clobber LIBS

and AUX_LIBS for libwrap check.
	* configure: Regenerate.
	* config.h.in (HAVE_LIBZ,HAVE_ZLIB): Update autoconf test to canonical
	name.
	(HAVE_LIBPNG): Add new test for libpng.
	* GSWeb.framework/GSWPngImageInfo.h/m: New files.
	* GSWeb.framework/GSWeb.h (GSWPngImageInfo): Add declaration and include.
	* GSWeb.framework/GNUmakefile (GSWPngImageInfo.h/m): Add files.
	* GSWeb.framework/GSWImageInfo.m (GSWPngImageInfo): Remove reference to
	class.
	* GSWeb.framework/GSWResponse.m (HAVE_LIBZ,HAVE_ZLIB): Update references.
	* GSWeb.framework/NSData+Compress.h/m (HAVE_LIBZ,HAVE_ZLIB): Ditto.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gsweb/trunk@28183 72102866-910b-0410-8b05-ffd578937521

ChangeLog

@@ -16,6 +16,21 @@
 	* Examples/WebBookStore1/BookStore.eomodeld/index.eomodeld:
 	Update adaptor name.
 
+	* configure.ac: Add check for zlib and libpng.  Do not clobber LIBS
+	and AUX_LIBS for libwrap check.
+	* configure: Regenerate.
+	* config.h.in (HAVE_LIBZ,HAVE_ZLIB): Update autoconf test to canonical
+	name.
+	(HAVE_LIBPNG): Add new test for libpng.
+	* GSWeb.framework/GSWPngImageInfo.h/m: New files.
+	* GSWeb.framework/GSWeb.h (GSWPngImageInfo): Add declaration and include.
+	* GSWeb.framework/GNUmakefile (GSWPngImageInfo.h/m): Add files.
+	* GSWeb.framework/GSWImageInfo.m (GSWPngImageInfo): Remove reference to
+	class.
+	* GSWeb.framework/GSWResponse.m (HAVE_LIBZ,HAVE_ZLIB): Update references.
+	* GSWeb.framework/NSData+Compress.h/m (HAVE_LIBZ,HAVE_ZLIB): Ditto.
+
+	
 2009-04-05  David Ayers  <ayers@fsfe.org>
 
 	* GSWeb.framework/GSWImageInfo.h/m: New files.

GSWeb.framework/GNUmakefile

@@ -143,6 +143,7 @@ GSWHyperlink.m \
 GSWImage.m \
 GSWImageButton.m \
 GSWImageInfo.m \
+GSWPngImageInfo.m \
 GSWJavaScript.m \
 GSWNestedList.m \
 GSWParam.m \
@@ -258,6 +259,7 @@ GSWHyperlink.h \
 GSWImage.h \
 GSWImageButton.h \
 GSWImageInfo.h \
+GSWPngImageInfo.h \
 GSWInput.h \
 GSWJavaScript.h \
 GSWKeyValueAssociation.h \

GSWeb.framework/GSWImageInfo.m

@@ -39,9 +39,6 @@ RCS_ID("$Id: GSWImageInfo.m 25027 2009-04-05 13:00:10Z ayers $")
 @interface GSWGifImageInfo : GSWImageInfo
 -(id)initWithContentsOfFile: (NSString *)path;
 @end
-@interface GSWPngImageInfo : GSWImageInfo
--(id)initWithContentsOfFile: (NSString *)path;
-@end
 
 @implementation GSWJpegImageInfo
 -(id)initWithContentsOfFile: (NSString *)path
@@ -59,14 +56,6 @@ RCS_ID("$Id: GSWImageInfo.m 25027 2009-04-05 13:00:10Z ayers $")
   return self;
 }
 @end
-@implementation GSWPngImageInfo
--(id)initWithContentsOfFile: (NSString *)path
-{
-  NSLog(@"TODO:[%@ %@] %s:%d",NSStringFromClass([self class]),NSStringFromSelector(_cmd),__FILE__,__LINE__);
-  DESTROY(self);
-  return self;
-}
-@end
 
 @implementation GSWImageInfo
 static NSDictionary *extensionClassDict = nil;

GSWeb.framework/GSWPngImageInfo.h

@@ -0,0 +1,40 @@
+/** GSWPngImageInfo.h - <title>GSWeb: Class GSWPngImageInfo</title>
+
+   Copyright (C) 2009 Free Software Foundation, Inc.
+   
+   Written by:	David Ayers  <ayers@fsfe.org>
+   Date: 	April 2009
+   
+   $Revision: 26815 $
+   $Date: 2009-04-05 13:00:10 +0200$
+
+   This file is part of the GNUstep Web Library.
+   
+   <license>
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+   
+   This library 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
+   Library General Public License for more details.
+   
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not, write to the Free
+   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+   </license>
+**/
+
+// $Id: GSWImageInfo.h 26815 2009-04-05  13:00:10Z ayers $
+
+#ifndef _GSWPngImageInfo_h__
+	#define _GSWPngImageInfo_h__
+
+@interface GSWPngImageInfo : GSWImageInfo
+-(id)initWithContentsOfFile: (NSString *)path;
+@end
+
+
+#endif //_GSWPngImageInfo_h__

GSWeb.framework/GSWPngImageInfo.m

@@ -0,0 +1,113 @@
+/** GSWPngImageInfo.m - <title>GSWeb: Class GSWImageInfo</title>
+
+   Copyright (C) 2009 Free Software Foundation, Inc.
+   
+   Written by:	David Ayers  <ayers@fsfe.org>
+   Date: 	April 2009
+   
+   $Revision: 26815 $
+   $Date: 2009-04-05 13:00:10 +0200$
+
+   This file is part of the GNUstep Web Library.
+   
+   <license>
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+   
+   This library 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
+   Library General Public License for more details.
+   
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not, write to the Free
+   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+   </license>
+**/
+
+#include "config.h"
+RCS_ID("$Id: GSWImageInfo.m 25027 2009-04-05 13:00:10Z ayers $")
+
+#ifdef HAVE_LIBPNG
+#include <png.h>
+#endif
+
+#include "GSWeb.h"
+
+#ifdef HAVE_LIBPNG
+typedef struct
+{
+  NSData *data;
+  unsigned int offset;
+} reader_struct_t;
+
+static void
+reader_func(png_structp png_struct,
+	    png_bytep data,
+	    png_size_t length)
+{
+  reader_struct_t *r = png_get_io_ptr(png_struct);
+
+  if (r->offset + length > [r->data length])
+    {
+      png_error(png_struct, "end of buffer");
+      return;
+    }
+  memcpy(data, [r->data bytes] + r->offset, length);
+  r->offset += length;
+}
+#endif
+
+@implementation GSWPngImageInfo
+-(id)initWithContentsOfFile: (NSString *)path
+{
+#ifdef HAVE_LIBPNG
+#warning HAVE_LIBPNG
+  if ((self = [super init]))
+    {
+      NSData *data = [NSData dataWithContentsOfFile: path];
+      const png_bytep bytes = (png_bytep)[data bytes];
+      size_t len = [data length];
+
+      if (!png_sig_cmp(bytes,0,len))
+	{
+	  png_structp png_struct;
+	  png_infop png_info, png_end_info;
+	  reader_struct_t reader;
+
+	  png_struct = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+	  png_info = png_create_info_struct(png_struct);
+	  png_end_info = png_create_info_struct(png_struct);
+
+	  if (setjmp(png_jmpbuf(png_struct)))
+	    {
+	      png_destroy_read_struct(&png_struct, &png_info, &png_end_info);
+	      RELEASE(self);
+	      return nil;
+	    }
+
+	  reader.data = data;
+	  reader.offset = 0;
+
+	  png_set_read_fn(png_struct, &reader, reader_func);
+	  png_read_info(png_struct, png_info);
+
+	  DESTROY(_widthString);
+	  DESTROY(_heightString);
+	  _width = png_get_image_width(png_struct, png_info);
+	  _height = png_get_image_height(png_struct, png_info);
+
+	  png_destroy_read_struct(&png_struct, &png_info, &png_end_info);
+	}
+    }
+#else
+  GSOnceMLog(@"PNG support not configured for GSWeb.");
+  DESTROY(self);
+#endif
+
+  return self;
+}
+@end
+

GSWeb.framework/GSWResponse.m

@@ -262,7 +262,7 @@ void GSWResponse_appendTagAttributeValueEscapingHTMLAttributeValue(GSWResponse*
 
   LOGObjectFnStart();
 
-#ifdef HAVE_ZLIB
+#ifdef HAVE_LIBZ
   dataLength=[self _contentLength];
   NSDebugMLog(@"dataLength=%d",dataLength);
   // Now we see if we can gzip the content

GSWeb.framework/GSWeb.h

@@ -150,6 +150,7 @@
 @class GSWRecording;
 @class GSWInputStreamData;
 @class GSWImageInfo;
+@class GSWPngImageInfo;
 
 #include "GSWDefines.h"
 #include "GSWConstants.h"
@@ -210,6 +211,7 @@
 #include "GSWImage.h"
 #include "GSWImageButton.h"
 #include "GSWImageInfo.h"
+#include "GSWPngImageInfo.h"
 #include "GSWJavaScript.h"
 #include "GSWNestedList.h"
 #include "GSWParam.h"

GSWeb.framework/NSData+Compress.h

@@ -32,7 +32,7 @@
 #ifndef _NSData_Compress_h__
 #define _NSData_Compress_h__
 
-#ifdef HAVE_ZLIB
+#ifdef HAVE_LIBZ
 //====================================================================
 @interface NSData (GSWZLib)
 -(NSData*)deflate;

GSWeb.framework/NSData+Compress.m

@@ -33,7 +33,7 @@
 RCS_ID("$Id$")
 
 #include "GSWeb.h"
-#ifdef HAVE_ZLIB
+#ifdef HAVE_LIBZ
 #include <zlib.h>
 
 void GZPutLong(void* ptr,uLong value)

config.h.in

@@ -25,9 +25,10 @@
 #define	included_config_h
 
 
+#undef HAVE_LIBZ
+#undef HAVE_LIBPNG
 #undef HAVE_LIBWRAP
 #undef HAVE_GDL2
-#define HAVE_ZLIB 1
 
 #define RCS_ID(name) \
         static const char rcsId[] = name; \

configure.ac

@@ -53,10 +53,20 @@ if test "$GDL2" = yes; then
 fi
 AC_SUBST(GDL2)
 
+#--------------------------------------------------------------------
+# Check for zlib
+# AC_CHECL_LIB sets HAVE_LIBZ instead of HAVE_ZLIB
+#--------------------------------------------------------------------
+AC_CHECK_HEADERS(zlib.h)
+if test $ac_cv_header_zlib_h = yes; then
+  AC_CHECK_LIB(z, gzseek)
+fi
+
 #--------------------------------------------------------------------
 # Check for libwrap
 #--------------------------------------------------------------------
 saved_LIBS="$LIBS"
+WRAP_LIBS=""
 AC_CHECK_LIB(wrap, main, wrap_ok=yes, wrap_ok=no)
 if test "$wrap_ok" = yes; then
   LIBS="-lwrap"
@@ -81,13 +91,13 @@ if test "$wrap_ok" = yes; then
   fi
 
   if test "$wrap_ok" = yes; then
-    AUX_LIBS="$AUX_LIBS $LIBS"
+    WRAP_LIBS="$LIBS"
     HAVE_LIBWRAP=1
     AC_DEFINE(HAVE_LIBWRAP)
   fi
 fi
 AC_SUBST(LIBWRAP,$wrap_ok)
-LIBS="$saved_LIBS"
+LIBS="$saved_LIBS $WRAP_LIBS"
 
 #--------------------------------------------------------------------
 # Check recent libxml for XML parser
@@ -113,6 +123,17 @@ else
   CFLAGS="$saved_CFLAGS"
 fi
 
+#--------------------------------------------------------------------
+# Find additional image libs
+#--------------------------------------------------------------------
+AC_ARG_ENABLE(png,
+  [  --disable-png           Disable PNG support],,
+  enable_png=yes)
+
+if test $enable_png = yes; then
+  AC_CHECK_LIB(png, png_sig_cmp)
+fi
+
 #--------------------------------------------------------------------
 # Record the version
 #--------------------------------------------------------------------
@@ -127,6 +148,7 @@ AC_SUBST(MINOR_VERSION)
 AC_SUBST(SUBMINOR_VERSION)
 AC_SUBST(GCC_VERSION)
 
+AUX_LIBS="$LIBS"
 AC_SUBST(AUX_INCS)
 AC_SUBST(AUX_LIBS)