parser3/src/include/pa_stylesheet_connection.h - diff

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Diff for /parser3/src/include/pa_stylesheet_connection.h between versions 1.24 and 1.50

version 1.24, 2002/01/23 12:19:56	version 1.50, 2024/11/04 03:53:25
Line 1	Line 1
/** @file	/** @file
Parser: Stylesheet connection decl.	Parser: Stylesheet connection decl.

Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)	Copyright (c) 2001-2024 Art. Lebedev Studio (http://www.artlebedev.com)
Author: Alexander Petrosyan <paf@design.ru> (http://paf.design.ru)	Authors: Konstantin Morshnev <moko@design.ru>, Alexandr Petrosian <paf@design.ru>

$Id$
*/	*/

#ifndef PA_STYLESHEET_CONNECTION_H	#ifndef PA_STYLESHEET_CONNECTION_H
#define PA_STYLESHEET_CONNECTION_H	#define PA_STYLESHEET_CONNECTION_H

	#define IDENT_PA_STYLESHEET_CONNECTION_H "$Id$"

#include "libxslt/xslt.h"	#include "libxslt/xslt.h"
#include "libxslt/xsltInternals.h"	#include "libxslt/xsltInternals.h"

#include "pa_pool.h"
#include "pa_stylesheet_manager.h"	#include "pa_xml_exception.h"
#include "pa_exception.h"
#include "pa_common.h"	#include "pa_common.h"
	#include "pa_globals.h"
	#include "pa_xml_io.h"

// defines	// defines

#define STYLESHEET_FILENAME_STAMP_SUFFIX ".stamp"	/** Connection with stylesheet:

/** Connection with stylesheet:
remembers time and can figure out that it needs recompilation	remembers time and can figure out that it needs recompilation
*/	*/
class Stylesheet_connection : public Pooled {	class Stylesheet_connection: public PA_Object {

friend class Stylesheet_connection_ptr;	friend class Stylesheet_connection_ptr;

	private:

	String::Body ffile_spec;
	xsltStylesheet *fstylesheet;
	HashStringBool* dependencies;
	time_t time_used;
	time_t prev_disk_time;

public:	public:

Stylesheet_connection(Pool& pool, const String& afile_spec) : Pooled(pool),	Stylesheet_connection(String::Body afile_spec):
ffile_spec(afile_spec),	ffile_spec(afile_spec),
prev_disk_time(0),
fservices_pool(0),
fstylesheet(0),	fstylesheet(0),
time_used(0), used(0) {	dependencies(0),
}	time_used(0),
	prev_disk_time(0),
const String& file_spec() { return ffile_spec; }	used(0)
	{}

	String::Body file_spec() { return ffile_spec; }

void set_services(Pool *aservices_pool) {	bool uncachable() {
fservices_pool=aservices_pool;	return !dependencies /means they were external/;
}	}

bool expired(time_t older_dies) {	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; }	time_t get_time_used() { return time_used; }

void disconnect() {	void disconnect() {
xsltFreeStylesheet(fstylesheet); fstylesheet=0;	fstylesheet=0;
}	}

bool connected() { return fstylesheet!=0; }	bool connected() { return fstylesheet!=0; }

xsltStylesheet *stylesheet(bool nocache) {	xsltStylesheet *stylesheet() {
time_t new_disk_time=get_new_disk_time();	time_t new_disk_time=0;
if(nocache \|\| new_disk_time)	if(uncachable() \|\| (new_disk_time=get_new_disk_time()))
load(new_disk_time);	load(new_disk_time);
return fstylesheet;	return fstylesheet;
}	}

private:	private:

/// return to cache	/// return to cache
void close() {	void close();
stylesheet_manager->close_connection(ffile_spec, *this);
}

private:	private:

Line 76 private:	Line 83 private:
return now_disk_time>prev_disk_time?now_disk_time:0;	return now_disk_time>prev_disk_time?now_disk_time:0;
}	}

void load(time_t new_disk_time) {	void load(time_t new_disk_time);
Pool& pool=*fservices_pool;	time_t get_disk_time();

xsltStylesheet *nstylesheet=
xsltParseStylesheetFile(BAD_CAST ffile_spec.cstr(String::UL_FILE_SPEC));
if(!nstylesheet \|\| xmlHaveGenericErrors()) {
GdomeException exc=0;
throw Exception(0, 0,
&ffile_spec,
exc);
}

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;
}

private: // connection usage methods	private: // connection usage methods

	int used;

void use() {	void use() {
time_used=time(0); // they started to use at this time	time_used=time(0); // they started to use at this time
used++;	used++;
}	}

void unuse() {	void unuse() {
used--;	used--;
if(!used)	if(!used)
close();	close();
}	}

private: // connection usage data

int used;

private:

const String& ffile_spec;
xsltStylesheet *fstylesheet;
time_t time_used;
time_t prev_disk_time;

private:

Pool *fservices_pool;

private:
void *malloc(size_t size) { return fservices_pool->malloc(size); }
void *calloc(size_t size) { return fservices_pool->calloc(size); }
};	};

/// Auto-object used to track Stylesheet_connection usage	/// Auto-object used to track Stylesheet_connection usage
class Stylesheet_connection_ptr {	class Stylesheet_connection_ptr {
Stylesheet_connection *fconnection;	Stylesheet_connection *fconnection;
public:	public:
explicit Stylesheet_connection_ptr(Stylesheet_connection *aconnection) :	Stylesheet_connection_ptr(Stylesheet_connection *aconnection) : fconnection(aconnection) {
fconnection(aconnection) {
fconnection->use();	fconnection->use();
}	}
~Stylesheet_connection_ptr() {	~Stylesheet_connection_ptr() {
Line 153 public:	Line 116 public:
Stylesheet_connection* operator->() {	Stylesheet_connection* operator->() {
return fconnection;	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	#endif

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Removed from v.1.24
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	Added in v.1.50