--- parser3/src/include/pa_stylesheet_connection.h	2003/11/20 16:34:25	1.35
+++ parser3/src/include/pa_stylesheet_connection.h	2023/09/26 20:49:07	1.49
@@ -1,14 +1,14 @@
 /** @file
 	Parser: Stylesheet connection decl.
 
-	Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com)
-	Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
+	Copyright (c) 2001-2023 Art. Lebedev Studio (http://www.artlebedev.com)
+	Authors: Konstantin Morshnev <moko@design.ru>, Alexandr Petrosian <paf@design.ru>
 */
 
 #ifndef PA_STYLESHEET_CONNECTION_H
 #define PA_STYLESHEET_CONNECTION_H
 
-static const char * const IDENT_STYLESHEET_CONNECTION_H="$Date: 2003/11/20 16:34:25 $";
+#define IDENT_PA_STYLESHEET_CONNECTION_H "$Id: pa_stylesheet_connection.h,v 1.49 2023/09/26 20:49:07 moko Exp $"
 
 #include "libxslt/xslt.h"
 #include "libxslt/xsltInternals.h"
@@ -17,12 +17,11 @@ static const char * const IDENT_STYLESHE
 #include "pa_xml_exception.h"
 #include "pa_common.h"
 #include "pa_globals.h"
+#include "pa_xml_io.h"
 
 // defines
 
-#define STYLESHEET_FILENAME_STAMP_SUFFIX ".stamp"
-
-/**	Connection with stylesheet: 
+/**	Connection with stylesheet:
 	remembers time and can figure out that it needs recompilation
 */
 class Stylesheet_connection: public PA_Object {
@@ -31,37 +30,45 @@ class Stylesheet_connection: public PA_O
 
 private:
 
-	const String& ffile_spec;
+	String::Body ffile_spec;
 	xsltStylesheet *fstylesheet;
+	HashStringBool* dependencies;
 	time_t time_used;
 	time_t prev_disk_time;
 
 public:
 
-	Stylesheet_connection(const String& afile_spec):
+	Stylesheet_connection(String::Body afile_spec):
 		ffile_spec(afile_spec),
-		prev_disk_time(0),
 		fstylesheet(0),
-		time_used(0), used(0)  {}
-	
-	const String& file_spec() { return ffile_spec; }
+		dependencies(0),
+		time_used(0),
+		prev_disk_time(0),
+		used(0)
+	{}
+
+	String::Body file_spec() { return ffile_spec; }
+
+	bool uncachable() {
+		return !dependencies /*means they were external*/;
+	}
 
 	bool expired(time_t older_dies) {
-		return !used && time_used<older_dies;
+		return uncachable() || (!used && time_used<older_dies);
 	}
 	time_t get_time_used() { return time_used; }
 
-	void disconnect() { 
-		xsltFreeStylesheet(fstylesheet);  fstylesheet=0; 
+	void disconnect() {
+		fstylesheet=0;
 	}
 
 	bool connected() { return fstylesheet!=0; }
 
-	xsltStylesheet *stylesheet(bool nocache) { 
-		time_t new_disk_time=get_new_disk_time();
-		if(nocache || new_disk_time)
+	xsltStylesheet *stylesheet() {
+		time_t new_disk_time=0;
+		if(uncachable() || (new_disk_time=get_new_disk_time()))
 			load(new_disk_time);
-		return fstylesheet; 
+		return fstylesheet;
 	}
 
 private:
@@ -76,47 +83,18 @@ private:
 		return now_disk_time>prev_disk_time?now_disk_time:0;
 	}
 
-	void load(time_t new_disk_time) {
-		int saved=xmlDoValidityCheckingDefaultValue;//
-		xmlDoValidityCheckingDefaultValue=0;//
-		xsltStylesheet *nstylesheet=
-			xsltParseStylesheetFile(BAD_CAST ffile_spec.cstr(String::L_FILE_SPEC));
-		xmlDoValidityCheckingDefaultValue = saved;//
-		if(xmlHaveGenericErrors()) {
-			GdomeException exc=0;
-			throw XmlException(&ffile_spec, exc);
-		}
-		if(!nstylesheet)
-			throw Exception("file.missing",
-				&ffile_spec,
-				"stylesheet failed to load");
-
-		xsltFreeStylesheet(fstylesheet);  
-		fstylesheet=nstylesheet;
-		prev_disk_time=new_disk_time;
-	}
-
-	time_t get_disk_time() {
-		size_t size;
-		time_t atime, mtime, ctime;
-		String stamp_file_spec(ffile_spec);
-		stamp_file_spec << STYLESHEET_FILENAME_STAMP_SUFFIX;
-		// {file_spec}.stamp modification time OR {file_spec}
-		const String& stat_file_spec=file_readable(stamp_file_spec)?stamp_file_spec:ffile_spec;
-		file_stat(stat_file_spec, 
-			size,
-			atime, mtime, ctime,
-			true/*exception on error*/);
-		return mtime;
-	}
+	void load(time_t new_disk_time);
+	time_t get_disk_time();
 
 private: // connection usage methods
 
 	int used;
+
 	void use() {
 		time_used=time(0); // they started to use at this time
 		used++;
 	}
+
 	void unuse() {
 		used--;
 		if(!used)
@@ -129,8 +107,7 @@ private: // connection usage methods
 class Stylesheet_connection_ptr {
 	Stylesheet_connection *fconnection;
 public:
-	explicit Stylesheet_connection_ptr(Stylesheet_connection *aconnection) : 
-		fconnection(aconnection) {
+	Stylesheet_connection_ptr(Stylesheet_connection *aconnection) : fconnection(aconnection) {
 		fconnection->use();
 	}
 	~Stylesheet_connection_ptr() {
@@ -139,22 +116,6 @@ public:
 	Stylesheet_connection* operator->() {
 		return fconnection;
 	}
-/*	Stylesheet_connection& operator*() {
-		return *fconnection;
-	}*/
-
-	// copying
-	Stylesheet_connection_ptr(const Stylesheet_connection_ptr& src) : fconnection(src.fconnection) {
-		fconnection->use();
-	}
-	Stylesheet_connection_ptr& operator =(const Stylesheet_connection_ptr& src) {
-		// may do without this=src check
-		fconnection->unuse();
-		fconnection=src.fconnection;
-		fconnection->use();
-
-		return *this;
-	}
 };
 
 #endif