lyx_mirror/src/support/lyxlib.h
Georg Baum 5ed606f9c5 Add a cache for converted image files. This needs to be enabled in the
preferences file with \use_converter_cache true. It is disabled by default,
and no GUI support for changing the preferences is yet implemented.

	* src/insets/insetgraphics.C
	(InsetGraphics::prepareFile): Use image file cache

	* src/insets/ExternalSupport.C
	(updateExternal): Use image file cache

	* src/exporter.C
	(Exporter::Export): Do not use image file cache

	* src/graphics/GraphicsCacheItem.C

	(CacheItem::Impl::imageConverted): Add the converted file to the
	image file cache
	(CacheItem::Impl::convertToDisplayFo): Use image file cache

	* src/converter.C
	(Converters::convert): Use image file cache if the caller allowed that

	* src/converter.h
	(Converters::convert): Adjust arguments

	* src/Makefile.am: Add new files

	* src/support/lyxlib.h
	(chmod): new function
	(copy): add mode argument

	* src/support/copy.C
	(chmod): new function
	(copy): implement mode argument

	* src/support/mkdir.C
	(lyx::support::mkdir): Add warning if permissions are ignored

	* src/lyxrc.[Ch]: Add new settings \converter_cache_maxage and
	\use_converter_cache

	* src/ConverterCache.[Ch]: New image file cache

	* src/importer.C
	(Importer::Import): Do nut use the image file cache

	* src/lyx_main.C
	(LyX::init): Initialize the image file cache

	* src/mover.[Ch]
	(Mover::do_copy): Add mode argument
	(SpecialisedMover::do_copy): ditto

	* configure.ac: Check for chmod

	* development/cmake/ConfigureChecks.cmake: ditto

	* development/cmake/config.h.cmake: ditto

	* development/scons/SConstruct: ditto

	* development/scons/scons_manifest.py: Add new files


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@15897 a592a061-630c-0410-9148-cb99ea01b6c8
2006-11-13 10:27:57 +00:00

70 lines
1.9 KiB
C++

// -*- C++ -*-
/**
* \file lyxlib.h
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* A selection of useful system functions made
* handy for C++ usage.
*
* \author Lars Gullik Bjønnes
*
* Full author contact details are available in file CREDITS.
*/
#ifndef LYX_LIB_H
#define LYX_LIB_H
#include <string>
namespace lyx {
namespace support {
/// get the current working directory
std::string const getcwd();
/// change to a directory, 0 is returned on success.
int chdir(std::string const & name);
/// Change file permissions
bool chmod(std::string const & file, unsigned long int mode);
/**
* rename a file, returns false if it fails.
* It can handle renames across partitions.
*/
bool rename(std::string const & from, std::string const & to);
/// copy a file, returns false it it fails
bool copy(std::string const & from, std::string const & to,
unsigned long int mode = (unsigned long int)-1);
/// generates a checksum of a file
unsigned long sum(std::string const & file);
/// FIXME: some point to this hmm ?
int kill(int pid, int sig);
/// FIXME: same here
void abort();
/// create the given directory with the given mode
int mkdir(std::string const & pathname, unsigned long int mode);
/// unlink the given file
int unlink(std::string const & file);
/// (securely) create a temporary file in the given dir with the given prefix
std::string const tempName(std::string const & dir = std::string(),
std::string const & mask = std::string());
/**
* Returns true if var is approximately equal to number with allowed error
* of 'error'.
*
* Usage: if (float_equal(var, number, 0.0001)) { }
*
* This will check if 'var' is approx. equal to 'number' with error of 1/1000
*/
inline bool float_equal(double var, double number, double error)
{
return (number - error <= var && var <= number + error);
}
} // namespace support
} // namespace lyx
#endif /* LYX_LIB_H */