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8171272d1f
External processes cannot access files which are open in LyX. Therefore the
temp files created by the external inset need to be closed right after
creation. The symptom was that the date inset did not produce any outout on
windows (bug 9925). This change reverts a small part of f09a9fe2.
Although the date inset is unimportant and will probably be removed, this
change is important for all external insets that make use of temp files.
77 lines
2.3 KiB
C++
77 lines
2.3 KiB
C++
// -*- C++ -*-
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/**
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* \file TempFile.h
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Georg Baum
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*
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* Full author contact details are available in file CREDITS.
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*/
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#ifndef TEMPFILE_H
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#define TEMPFILE_H
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#include <string>
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namespace lyx {
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namespace support {
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class FileName;
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/**
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* Class for safely creating temporary files without race conditions.
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* The file is created in the constructor, and deleted in the destructor.
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* You may do anything with the file (including deletion), but the instance
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* of this class must stay alive as long as the file is needed.
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* There is only one exception to this rule:
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* If the file is supposed to be used by a different process then you need
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* to be aware of OS specific file locking semantics: On windows, the file
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* is opened with exclusive rights for the process which opened it. This
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* is not the case on other OSes. Therefore, if the file is supposed to be
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* used by a different process you need to sometheing similar to TempName
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* in InsetExternal.cpp.
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*/
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class TempFile {
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/// noncopyable
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TempFile(TempFile const &);
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/// nonassignable
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TempFile & operator=(TempFile const &);
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public:
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/**
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*Create a temporary file with the given mask.
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* \p mask must be in filesystem encoding, the template file
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* will be created in the global temporary directory as given
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* by 'package().temp_dir()'.
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* If the mask contains "XXXXXX" this portion will be replaced by
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* a uniquely generated string. If it does not contain this portion,
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* it will be automatically appended using a dot. Therefore, please
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* specify the "XXXXXX" portion if the extension of the generated
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* name is important (e.g. for the converter machinery).
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*/
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TempFile(std::string const & mask);
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TempFile(FileName const & temp_dir, std::string const & mask);
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~TempFile();
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/**
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* Get the name of the temporary file.
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* This is empty if the file could not be created.
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*/
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FileName name() const;
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/**
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* Set whether the file should be automatically deleted in the
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* destructor.
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* Automatic deletion is the default, but it can be switched off if
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* the file should be kept, because it should be renamed afterwards.
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*/
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void setAutoRemove(bool autoremove);
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private:
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///
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struct Private;
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Private * d;
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};
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} // namespace support
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} // namespace lyx
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#endif
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