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Make autosave create a temporary backup of the current autosave file before saving so that an error while saving is less likely to cause data loss.

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Originally committed to SVN as r3353.
This commit is contained in:
Thomas Goyne 2009-08-02 20:32:53 +00:00
parent 5ccf95b9df
commit cca0de98cb
1 changed files with 24 additions and 10 deletions
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34
aegisub/src/frame_main_events.cpp
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@ -1726,8 +1726,8 @@ void FrameMain::OnOpenStylingAssistant (wxCommandEvent &event) {
/// @brief Auto backup /// @brief Autosave the currently open file, if any
/// @param event /// @param event Unused
/// ///
void FrameMain::OnAutoSave(wxTimerEvent &event) { void FrameMain::OnAutoSave(wxTimerEvent &event) {
// Auto Save // Auto Save
@ -1739,19 +1739,33 @@ void FrameMain::OnAutoSave(wxTimerEvent &event) {
if (path.IsEmpty()) path = origfile.GetPath(); if (path.IsEmpty()) path = origfile.GetPath();
wxFileName dstpath(path); wxFileName dstpath(path);
if (!dstpath.IsAbsolute()) path = StandardPaths::DecodePathMaybeRelative(path, _T("?user/")); if (!dstpath.IsAbsolute()) path = StandardPaths::DecodePathMaybeRelative(path, _T("?user/"));
path += _T("/"); dstpath.AssignDir(path);
dstpath.Assign(path);
if (!dstpath.DirExists()) wxMkdir(path); if (!dstpath.DirExists()) wxMkdir(path);
// Save
wxString name = origfile.GetName(); wxString name = origfile.GetName();
wxString backup = path; if (name.IsEmpty()) {
if (name.IsEmpty()) backup += _T("Untitled.AUTOSAVE.ass"); dstpath.SetFullName("Untitled.AUTOSAVE.ass");
else backup += origfile.GetName() + _T(".AUTOSAVE.ass"); }
AssFile::top->Save(backup,false,false); else {
dstpath.SetFullName(name + L".AUTOSAVE.ass");
}
// If the autosave file already exists, make a temporary copy of it in case the autosave fails
wxFileName backup;
if (dstpath.FileExists()) {
backup = dstpath;
backup.SetName(backup.GetName() + ".backup");
wxRenameFile(dstpath.GetFullPath(), backup.GetFullPath());
}
AssFile::top->Save(dstpath.GetFullPath(),false,false);
if (backup.FileExists()) {
wxRemoveFile(backup.GetFullPath());
}
// Set status bar // Set status bar
StatusTimeout(_("File backup saved as \"") + backup + _T("\".")); StatusTimeout(_("File backup saved as \"") + dstpath.GetFullPath() + _T("\"."));
} }
} }
catch (wxString err) { catch (wxString err) {