unpack zips in src to better compression

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

@@ -0,0 +1,124 @@
+#include "general.h"
+#include "ztext.h"
+
+/* Prototype */
+int16 plugins_init( void);
+void plugins_quit( void);
+
+
+/* LDG function */
+void CDECL( *codec_init)( void) = NULL;
+
+/* Global variable */
+int16 	plugins_nbr = 0;
+LDG 	*codecs[100];
+
+
+/*==================================================================================*
+ * void plugins_quit:																*
+ *		unload all the codec from memory.											*
+ *----------------------------------------------------------------------------------*
+ * input:																			*
+ *		--																			*
+ *----------------------------------------------------------------------------------*
+ * returns: 																		*
+ *      --																			*
+ *==================================================================================*/
+void plugins_quit( void)
+{
+	int16 i;
+
+	for( i = 0; i < plugins_nbr; i++)
+		ldg_close( codecs[i], ldg_global);
+
+}
+
+
+/*==================================================================================*
+ * void plugins_init:																*
+ *		load all the codec to memory.												*
+ *----------------------------------------------------------------------------------*
+ * input:																			*
+ *		--																			*
+ *----------------------------------------------------------------------------------*
+ * returns: 																		*
+ *      --																			*
+ *==================================================================================*/
+int16 plugins_init( void)
+{
+	char 			*env_ldg, plugin_dir[MAX_PATH];
+	DIR	 			*dir;
+	LDG_INFOS 		*cook;
+	struct dirent	*de;
+	int16			len;
+	char  			extention[4];
+
+	strcpy( plugin_dir, zview_path);
+	strcat( plugin_dir, "\\codecs");
+
+	/* We try to find the zcodecs folder in zview directory... 	*/
+	if ( chdir( plugin_dir) != 0)
+	{
+		shel_envrn( &env_ldg, "LDGPATH=");
+
+		/* ...if this directory doesn't exist, we try to find 
+	   	   the zcodecs folder in the default LDG path, with 
+	   	   the LDG cookie or with the environment variable.	*/
+
+		if( ldg_cookie( LDG_COOKIE, ( int32*)&cook))	
+			strcpy( plugin_dir, cook->path);
+		else if( env_ldg)
+			strcpy( plugin_dir, env_ldg);
+		else 
+			strcpy( plugin_dir, "C:\\gemsys\\ldg\\");
+
+		len = ( int16)strlen( plugin_dir);
+		
+		if( plugin_dir[len-1] != '\\')
+			strcat( plugin_dir, "\\"); 
+
+		strcat( plugin_dir, "codecs");
+
+		if ( chdir( plugin_dir) != 0)
+			return( 0);
+	}
+
+	if (( dir = opendir( ".")) != NULL)
+	{
+		while(( de = readdir( dir)) != NULL)
+		{
+			if (( strcmp( de->d_name, ".") == 0) || ( strcmp( de->d_name, "..") == 0))
+				continue;
+
+			strcpy ( extention, de->d_name + strlen( de->d_name) - 3);
+			str2lower( extention);
+
+			if( strcmp ( extention, "ldg") == 0)
+			{
+				if ( ( codecs[plugins_nbr] = ldg_open( de->d_name, ldg_global)))
+				{
+					if ( ( codec_init = ldg_find( "plugin_init", codecs[plugins_nbr])))
+					{
+						codec_init();
+						plugins_nbr++;
+					}
+					else
+					{
+						errshow( de->d_name, ldg_error());
+						ldg_close( codecs[plugins_nbr], ldg_global);
+					}
+				}
+				else
+				{
+					errshow( de->d_name, ldg_error());
+				}
+			}
+		}
+		closedir( dir);
+	}
+
+	chdir( zview_path);
+
+	return plugins_nbr;
+}
+