]> git.lyx.org Git - lyx.git/blobdiff - src/Buffer.cpp
Store ASCII data in std::string
[lyx.git] / src / Buffer.cpp
index 7205f692789a3653e0827183637e6eddc19e6dad..1eaa6ac224b201a172bbe3f063f470252d4c52d7 100644 (file)
@@ -58,7 +58,6 @@
 #include "SpellChecker.h"
 #include "sgml.h"
 #include "TexRow.h"
-#include "TexStream.h"
 #include "Text.h"
 #include "TextClass.h"
 #include "TocBackend.h"
@@ -98,6 +97,7 @@
 #include "support/gzstream.h"
 #include "support/lstrings.h"
 #include "support/lyxalgo.h"
+#include "support/mutex.h"
 #include "support/os.h"
 #include "support/Package.h"
 #include "support/PathChanger.h"
@@ -354,12 +354,20 @@ private:
 /// Creates the per buffer temporary directory
 static FileName createBufferTmpDir()
 {
-       static int count;
+       // FIXME This would be the ideal application for a TempDir class (like
+       //       TempFile but for directories) 
+       string counter;
+       {
+               static int count;
+               static Mutex mutex;
+               Mutex::Locker locker(&mutex);
+               counter = convert<string>(count++);
+       }
        // We are in our own directory.  Why bother to mangle name?
        // In fact I wrote this code to circumvent a problematic behaviour
        // (bug?) of EMX mkstemp().
        FileName tmpfl(package().temp_dir().absFileName() + "/lyx_tmpbuf" +
-               convert<string>(count++));
+               counter);
 
        if (!tmpfl.createDirectory(0777)) {
                throw ExceptionMessage(WarningException, _("Disk Error: "), bformat(
@@ -636,6 +644,28 @@ BufferParams const & Buffer::params() const
 }
 
 
+BufferParams const & Buffer::masterParams() const
+{
+       if (masterBuffer() == this)
+               return params();
+
+       BufferParams & mparams = const_cast<Buffer *>(masterBuffer())->params();
+       // Copy child authors to the params. We need those pointers.
+       AuthorList const & child_authors = params().authors();
+       AuthorList::Authors::const_iterator it = child_authors.begin();
+       for (; it != child_authors.end(); ++it)
+               mparams.authors().record(*it);
+       return mparams;
+}
+
+
+double Buffer::fontScalingFactor() const
+{
+       return isExporting() ? 75.0 * params().html_math_img_scale
+               : 0.01 * lyxrc.dpi * lyxrc.zoom * lyxrc.preview_scale_factor * params().display_pixel_ratio;
+}
+
+
 ParagraphList & Buffer::paragraphs()
 {
        return text().paragraphs();
@@ -913,7 +943,7 @@ bool Buffer::readDocument(Lexer & lex)
 
        readHeader(lex);
 
-       if (params().outputChanges) {
+       if (params().output_changes) {
                bool dvipost    = LaTeXFeatures::isAvailable("dvipost");
                bool xcolorulem = LaTeXFeatures::isAvailable("ulem") &&
                                  LaTeXFeatures::isAvailable("xcolor");
@@ -1035,7 +1065,8 @@ bool Buffer::readString(string const & s)
        Lexer lex;
        istringstream is(s);
        lex.setStream(is);
-       FileName const fn = FileName::tempName("Buffer_readString");
+       TempFile tempfile("Buffer_readStringXXXXXX.lyx");
+       FileName const fn = tempfile.name();
 
        int file_format;
        bool success = parseLyXFormat(lex, fn, file_format) == ReadSuccess;
@@ -1052,8 +1083,6 @@ bool Buffer::readString(string const & s)
        else if (success)
                if (readDocument(lex))
                        success = false;
-       if (fn.exists())
-               fn.removeFile();
        return success;
 }
 
@@ -1174,7 +1203,9 @@ Buffer::ReadStatus Buffer::parseLyXFormat(Lexer & lex,
 Buffer::ReadStatus Buffer::convertLyXFormat(FileName const & fn,
        FileName & tmpfile, int from_format)
 {
-       tmpfile = FileName::tempName("Buffer_convertLyXFormatXXXXXX.lyx");
+       TempFile tempfile("Buffer_convertLyXFormatXXXXXX.lyx");
+       tempfile.setAutoRemove(false);
+       tmpfile = tempfile.name();
        if(tmpfile.empty()) {
                Alert::error(_("Conversion failed"),
                        bformat(_("%1$s is from a different"
@@ -1261,12 +1292,32 @@ bool Buffer::save() const
        // We don't need autosaves in the immediate future. (Asger)
        resetAutosaveTimers();
 
-       FileName backupName;
-       bool madeBackup = false;
+       // if the file does not yet exist, none of the backup activity
+       // that follows is necessary
+       if (!fileName().exists())
+               return writeFile(fileName());
+
+       // we first write the file to a new name, then move it to its
+       // proper location once that has been done successfully. that
+       // way we preserve the original file if something goes wrong.
+       string const justname = fileName().onlyFileNameWithoutExt();
+       boost::scoped_ptr<TempFile>
+               tempfile(new TempFile(fileName().onlyPath(),
+                  justname + "-XXXXXX.lyx"));
+       bool const symlink = fileName().isSymLink();
+       if (!symlink)
+               tempfile->setAutoRemove(false);
+
+       FileName savefile(tempfile->name());
+       LYXERR(Debug::FILES, "Saving to " << savefile.absFileName());
+       if (!writeFile(savefile))
+               return false;
+
+       // we will set this to false if we fail
+       bool made_backup = true;
 
-       // make a backup if the file already exists
-       if (lyxrc.make_backup && fileName().exists()) {
-               backupName = FileName(absFileName() + '~');
+       FileName backupName(absFileName() + '~');
+       if (lyxrc.make_backup) {
                if (!lyxrc.backupdir_path.empty()) {
                        string const mangledName =
                                subst(subst(backupName.absFileName(), '/', '!'), ':', '!');
@@ -1274,14 +1325,15 @@ bool Buffer::save() const
                                                      mangledName));
                }
 
+               LYXERR(Debug::FILES, "Backing up original file to " <<
+                               backupName.absFileName());
                // Except file is symlink do not copy because of #6587.
                // Hard links have bad luck.
-               if (fileName().isSymLink())
-                       madeBackup = fileName().copyTo(backupName);
-               else
-                       madeBackup = fileName().moveTo(backupName);
+               made_backup = symlink ?
+                       fileName().copyTo(backupName):
+                       fileName().moveTo(backupName);
 
-               if (!madeBackup) {
+               if (!made_backup) {
                        Alert::error(_("Backup failure"),
                                     bformat(_("Cannot create backup file %1$s.\n"
                                               "Please check whether the directory exists and is writable."),
@@ -1290,15 +1342,46 @@ bool Buffer::save() const
                }
        }
 
-       if (writeFile(d->filename)) {
+       // Destroy tempfile since it keeps the file locked on windows (bug 9234)
+       // Only do this if tempfile is not in autoremove mode
+       if (!symlink)
+               tempfile.reset();
+       // If we have no symlink, we can simply rename the temp file.
+       // Otherwise, we need to copy it so the symlink stays intact.
+       if (made_backup && symlink ? savefile.copyTo(fileName(), true) :
+                                          savefile.moveTo(fileName()))
+       {
+               // saveCheckSum() was already called by writeFile(), but the
+               // time stamp is invalidated by copying/moving
+               saveCheckSum();
                markClean();
                return true;
+       }
+       // else we saved the file, but failed to move it to the right location.
+
+       if (lyxrc.make_backup && made_backup && !symlink) {
+               // the original file was moved to filename.lyx~, so it will look
+               // to the user as if it was deleted. (see bug #9234.) we could try
+               // to restore it, but that would basically mean trying to do again
+               // what we just failed to do. better to leave things as they are.
+               Alert::error(_("Write failure"),
+                            bformat(_("The file has successfully been saved as:\n  %1$s.\n"
+                          "But LyX could not move it to:\n  %2$s.\n"
+                                                        "Your original file has been backed up to:\n  %3$s"),
+                                    from_utf8(savefile.absFileName()),
+             from_utf8(fileName().absFileName()),
+                        from_utf8(backupName.absFileName())));
        } else {
-               // Saving failed, so backup is not backup
-               if (madeBackup)
-                       backupName.moveTo(d->filename);
-               return false;
+               // either we did not try to make a backup, or else we tried and failed,
+               // or else the original file was a symlink, in which case it was copied,
+               // not moved. so the original file is intact.
+               Alert::error(_("Write failure"),
+                            bformat(_("Cannot move saved file to:\n  %1$s.\n"
+                                      "But the file has successfully been saved as:\n  %2$s."),
+                                    from_utf8(fileName().absFileName()),
+                        from_utf8(savefile.absFileName())));
        }
+       return false;
 }
 
 
@@ -1485,7 +1568,6 @@ bool Buffer::makeLaTeXFile(FileName const & fname,
        if (!openFileWrite(ofs, fname))
                return false;
 
-       //TexStream ts(ofs.rdbuf(), &texrow());
        ErrorList & errorList = d->errorLists["Export"];
        errorList.clear();
        bool failed_export = false;
@@ -1503,13 +1585,12 @@ bool Buffer::makeLaTeXFile(FileName const & fname,
                writeLaTeXSource(os, original_path, runparams, output);
        }
        catch (EncodingException const & e) {
-               odocstringstream ods;
-               ods.put(e.failed_char);
+               docstring const failed(1, e.failed_char);
                ostringstream oss;
                oss << "0x" << hex << e.failed_char << dec;
                docstring msg = bformat(_("Could not find LaTeX command for character '%1$s'"
                                          " (code point %2$s)"),
-                                         ods.str(), from_utf8(oss.str()));
+                                         failed, from_utf8(oss.str()));
                errorList.push_back(ErrorItem(msg, _("Some characters of your document are probably not "
                                "representable in the chosen encoding.\n"
                                "Changing the document encoding to utf8 could help."),
@@ -3461,7 +3542,7 @@ void Buffer::changeRefsIfUnique(docstring const & from, docstring const & to)
 }
 
 
-void Buffer::getSourceCode(odocstream & os, string const format,
+void Buffer::getSourceCode(odocstream & os, string const format,
                           pit_type par_begin, pit_type par_end,
                           OutputWhat output, bool master) const
 {
@@ -3696,11 +3777,13 @@ int AutoSaveBuffer::generateChild()
        // to fork. But we will do the save
        // anyway.
        bool failed = false;
-       FileName const tmp_ret = FileName::tempName("lyxauto");
+       TempFile tempfile("lyxautoXXXXXX.lyx");
+       tempfile.setAutoRemove(false);
+       FileName const tmp_ret = tempfile.name();
        if (!tmp_ret.empty()) {
-               buffer_.writeFile(tmp_ret);
-               // assume successful write of tmp_ret
-               if (!tmp_ret.moveTo(fname_))
+               if (!buffer_.writeFile(tmp_ret))
+                       failed = true;
+               else if (!tmp_ret.moveTo(fname_))
                        failed = true;
        } else
                failed = true;
@@ -3780,7 +3863,9 @@ bool Buffer::autoSave() const
 
        // If this buffer is cloned, we assume that
        // we are running in a separate thread already.
-       FileName const tmp_ret = FileName::tempName("lyxauto");
+       TempFile tempfile("lyxautoXXXXXX.lyx");
+       tempfile.setAutoRemove(false);
+       FileName const tmp_ret = tempfile.name();
        if (!tmp_ret.empty()) {
                writeFile(tmp_ret);
                // assume successful write of tmp_ret
@@ -3903,7 +3988,7 @@ Buffer::ExportStatus Buffer::doExport(string const & target, bool put_in_tempdir
                Graph::EdgePath::const_iterator it = path.begin();
                Graph::EdgePath::const_iterator en = path.end();
                for (; it != en; ++it)
-                       if (theConverters().get(*it).nice) {
+                       if (theConverters().get(*it).nice()) {
                                need_nice_file = true;
                                break;
                        }
@@ -4098,6 +4183,7 @@ Buffer::ExportStatus Buffer::preview(string const & format) const
        return preview(format, update_unincluded);
 }
 
+
 Buffer::ExportStatus Buffer::preview(string const & format, bool includeall) const
 {
        MarkAsExporting exporting(this);