unpack zips in src to better compression

sources/z-tools/trunk/zview/txt_data.c

@@ -0,0 +1,72 @@
+#include "general.h"
+#include "pic_load.h"
+
+/*==================================================================================*
+ * delete_txt_data:																	*
+ *			free memory reserved in txt_data struct.								*
+ *----------------------------------------------------------------------------------*
+ * IMAGE *img: 	The IMAGE struct where is the txt_data struct. to handle.			*
+ *----------------------------------------------------------------------------------*
+ * returns: 	--																	*
+ *==================================================================================*/
+void delete_txt_data( IMAGE *img)
+{
+	int16 	i;
+
+	if( !img->comments)
+		return;
+
+	for ( i = 0; i < img->comments->lines; i++) 
+	{
+		if( img->comments->txt[i])
+			gfree( img->comments->txt[i]);
+	}
+
+	gfree( img->comments);
+	img->comments = NULL;
+}
+
+
+/*==================================================================================*
+ * init_txt_data:																	*
+ *			Initialisation with various shared_malloc of the txt_data struct.		*
+ *			This struct. will contain the comment of the picture or the EXIF data.	*
+ *----------------------------------------------------------------------------------*
+ * txtdata: 			The IMAGE struct where is the txt_dataThe IMAGE struct 		*
+ *						where is the txt_data struct. to be initialized.			*
+ * lines:				The number of lines in the text.							*
+ * max_lines_length:	The line size in character.									*
+ *----------------------------------------------------------------------------------*
+ * returns: 	0 if error else 1													*
+ *==================================================================================*/
+int16 init_txt_data( IMAGE *img, int16 lines, int16 max_lines_length)
+{
+	int16 	i;
+	size_t	line_size = max_lines_length * sizeof( int8); 
+
+	img->comments = gmalloc( sizeof( txt_data));
+
+	if( !img->comments)
+		return( 0);
+
+	if( lines > 255)
+		img->comments->lines	= 255;
+	else
+		img->comments->lines 	= lines;
+
+	img->comments->max_lines_length 	= max_lines_length;
+
+	for ( i = 0; i < img->comments->lines; i++) 
+	{
+		img->comments->txt[i] = gmalloc( line_size);
+
+		if( !img->comments->txt[i])
+		{
+			delete_txt_data( img);
+			return( 0);
+		}
+	}
+
+	return( 1);
+}
+