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Code Issues Releases Wiki Activity
audacity/src/AutoRecovery.cpp
windinthew e2a7282690 Fix wording issues reported on Wiki 
No ellipses in title bar of file open/import dialogs
Auto Recovery Discard dialogs say only recoverable projects are discarded
Capitalised button in Dependency dialogue per MS guidelines.
2017-03-27 05:36:10 +01:00

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/**********************************************************************
Audacity: A Digital Audio Editor
Audacity(R) is copyright (c) 1999-2010 Audacity Team.
License: GPL v2. See License.txt.
AutoRecovery.cpp
*******************************************************************//**
\class AutoRecoveryDialog
\brief The AutoRecoveryDialog prompts the user whether to
recover previous Audacity projects that were closed incorrectly.
*//********************************************************************/
#include "AutoRecovery.h"
#include "Audacity.h"
#include "FileNames.h"
#include "blockfile/SimpleBlockFile.h"
#include "Sequence.h"
#include "ShuttleGui.h"
#include <wx/wxprec.h>
#include <wx/filefn.h>
#include <wx/dir.h>
#include <wx/dialog.h>
#include <wx/app.h>
#include "WaveTrack.h"
enum {
ID_RECOVER_ALL = 10000,
ID_RECOVER_NONE,
ID_QUIT_AUDACITY,
ID_FILE_LIST
};
class AutoRecoveryDialog final : public wxDialogWrapper
{
public:
AutoRecoveryDialog(wxWindow *parent);
private:
void PopulateList();
void PopulateOrExchange(ShuttleGui & S);
void OnQuitAudacity(wxCommandEvent &evt);
void OnRecoverNone(wxCommandEvent &evt);
void OnRecoverAll(wxCommandEvent &evt);
wxListCtrl *mFileList;
public:
DECLARE_EVENT_TABLE()
};
AutoRecoveryDialog::AutoRecoveryDialog(wxWindow *parent) :
wxDialogWrapper(parent, -1, _("Automatic Crash Recovery"),
wxDefaultPosition, wxDefaultSize,
wxDEFAULT_DIALOG_STYLE & (~wxCLOSE_BOX)) // no close box
{
SetName(GetTitle());
ShuttleGui S(this, eIsCreating);
PopulateOrExchange(S);
}
BEGIN_EVENT_TABLE(AutoRecoveryDialog, wxDialogWrapper)
EVT_BUTTON(ID_RECOVER_ALL, AutoRecoveryDialog::OnRecoverAll)
EVT_BUTTON(ID_RECOVER_NONE, AutoRecoveryDialog::OnRecoverNone)
EVT_BUTTON(ID_QUIT_AUDACITY, AutoRecoveryDialog::OnQuitAudacity)
END_EVENT_TABLE()
void AutoRecoveryDialog::PopulateOrExchange(ShuttleGui& S)
{
S.SetBorder(5);
S.StartVerticalLay();
{
S.AddVariableText(_("Some projects were not saved properly the last time Audacity was run.\nFortunately, the following projects can be automatically recovered:"), false);
S.StartStatic(_("Recoverable projects"));
{
mFileList = S.Id(ID_FILE_LIST).AddListControlReportMode();
/*i18n-hint: (noun). It's the name of the project to recover.*/
mFileList->InsertColumn(0, _("Name"));
mFileList->SetColumnWidth(0, wxLIST_AUTOSIZE);
PopulateList();
}
S.EndStatic();
S.AddVariableText(_("After recovery, save the project to save the changes to disk."), false);
S.StartHorizontalLay();
{
S.Id(ID_QUIT_AUDACITY).AddButton(_("Quit Audacity"));
S.Id(ID_RECOVER_NONE).AddButton(_("Discard Projects"));
S.Id(ID_RECOVER_ALL).AddButton(_("Recover Projects"));
}
S.EndHorizontalLay();
}
S.EndVerticalLay();
Layout();
Fit();
SetMinSize(GetSize());
// Sometimes it centers on wxGTK and sometimes it doesn't.
// Yielding before centering seems to be a good workaround,
// but will leave to implement on a rainy day.
Center();
}
void AutoRecoveryDialog::PopulateList()
{
mFileList->DeleteAllItems();
wxDir dir(FileNames::AutoSaveDir());
if (!dir.IsOpened())
return;
wxString filename;
int i = 0;
for (bool c = dir.GetFirst(&filename, wxT("*.autosave"), wxDIR_FILES);
c; c = dir.GetNext(&filename))
mFileList->InsertItem(i++, wxFileName{ filename }.GetName());
mFileList->SetColumnWidth(0, wxLIST_AUTOSIZE);
}
void AutoRecoveryDialog::OnQuitAudacity(wxCommandEvent & WXUNUSED(event))
{
EndModal(ID_QUIT_AUDACITY);
}
void AutoRecoveryDialog::OnRecoverNone(wxCommandEvent & WXUNUSED(event))
{
int ret = wxMessageBox(
_("Are you sure you want to discard all recoverable projects?\n\nChoosing \"Yes\" discards all recoverable projects immediately."),
_("Confirm Discard Projects"), wxICON_QUESTION | wxYES_NO | wxNO_DEFAULT, this);
if (ret == wxYES)
EndModal(ID_RECOVER_NONE);
}
void AutoRecoveryDialog::OnRecoverAll(wxCommandEvent & WXUNUSED(event))
{
EndModal(ID_RECOVER_ALL);
}
////////////////////////////////////////////////////////////////////////////
static bool HaveFilesToRecover()
{
wxDir dir(FileNames::AutoSaveDir());
if (!dir.IsOpened())
{
wxMessageBox(_("Could not enumerate files in auto save directory."),
_("Error"), wxICON_STOP);
return false;
}
wxString filename;
bool c = dir.GetFirst(&filename, wxT("*.autosave"), wxDIR_FILES);
return c;
}
static bool RemoveAllAutoSaveFiles()
{
wxArrayString files;
wxDir::GetAllFiles(FileNames::AutoSaveDir(), &files,
wxT("*.autosave"), wxDIR_FILES);
for (unsigned int i = 0; i < files.GetCount(); i++)
{
if (!wxRemoveFile(files[i]))
{
// I don't think this error message is actually useful.
// -dmazzoni
//wxMessageBox(wxT("Could not remove auto save file: " + files[i]),
// _("Error"), wxICON_STOP);
return false;
}
}
return true;
}
static bool RecoverAllProjects(AudacityProject** pproj)
{
wxDir dir(FileNames::AutoSaveDir());
if (!dir.IsOpened())
{
wxMessageBox(_("Could not enumerate files in auto save directory."),
_("Error"), wxICON_STOP);
return false;
}
// Open a project window for each auto save file
wxString filename;
wxArrayString files;
wxDir::GetAllFiles(FileNames::AutoSaveDir(), &files,
wxT("*.autosave"), wxDIR_FILES);
for (unsigned int i = 0; i < files.GetCount(); i++)
{
AudacityProject* proj{};
if (*pproj)
{
// Reuse existing project window
proj = *pproj;
*pproj = NULL;
}
// Open project. When an auto-save file has been opened successfully,
// the opened auto-save file is automatically deleted and a NEW one
// is created.
AudacityProject::OpenProject( proj, files[i], false );
}
return true;
}
bool ShowAutoRecoveryDialogIfNeeded(AudacityProject** pproj,
bool *didRecoverAnything)
{
if (didRecoverAnything)
*didRecoverAnything = false;
if (HaveFilesToRecover())
{
// Under wxGTK3, the auto recovery dialog will not get
// the focus since the project window hasn't been allowed
// to completely initialize.
//
// Yielding seems to allow the initialization to complete.
//
// Additionally, it also corrects a sizing issue in the dialog
// related to wxWidgets bug:
//
// http://trac.wxwidgets.org/ticket/16440
//
// This must be done before "dlg" is declared.
wxEventLoopBase::GetActive()->YieldFor(wxEVT_CATEGORY_UI);
int ret = AutoRecoveryDialog{nullptr}.ShowModal();
switch (ret)
{
case ID_RECOVER_NONE:
return RemoveAllAutoSaveFiles();
case ID_RECOVER_ALL:
if (didRecoverAnything)
*didRecoverAnything = true;
return RecoverAllProjects(pproj);
default:
// This includes ID_QUIT_AUDACITY
return false;
}
} else
{
// Nothing to recover, move along
return true;
}
}
////////////////////////////////////////////////////////////////////////////
/// Recording recovery handler
RecordingRecoveryHandler::RecordingRecoveryHandler(AudacityProject* proj)
{
mProject = proj;
mChannel = -1;
mNumChannels = -1;
}
int RecordingRecoveryHandler::FindTrack() const
{
WaveTrackArray tracks = mProject->GetTracks()->GetWaveTrackArray(false);
int index;
if (mAutoSaveIdent)
{
for (index = 0; index < (int)tracks.size(); index++)
{
if (tracks[index]->GetAutoSaveIdent() == mAutoSaveIdent)
{
break;
}
}
}
else
{
index = tracks.size() - mNumChannels + mChannel;
}
return index;
}
bool RecordingRecoveryHandler::HandleXMLTag(const wxChar *tag,
const wxChar **attrs)
{
if (wxStrcmp(tag, wxT("simpleblockfile")) == 0)
{
// Check if we have a valid channel and numchannels
if (mChannel < 0 || mNumChannels < 0 || mChannel >= mNumChannels)
{
// This should only happen if there is a bug
wxASSERT(false);
return false;
}
WaveTrackArray tracks = mProject->GetTracks()->GetWaveTrackArray(false);
int index = FindTrack();
// We need to find the track and sequence where the blockfile belongs
if (index < 0 || index >= (int)tracks.size())
{
// This should only happen if there is a bug
wxASSERT(false);
return false;
}
WaveTrack* track = tracks[index];
WaveClip* clip = track->NewestOrNewClip();
Sequence* seq = clip->GetSequence();
// Load the blockfile from the XML
const auto &dirManager = mProject->GetDirManager();
dirManager->SetLoadingFormat(seq->GetSampleFormat());
BlockArray array;
array.resize(1);
dirManager->SetLoadingTarget(&array, 0);
auto &blockFile = array[0].f;
if (!dirManager->HandleXMLTag(tag, attrs) || !blockFile)
{
// This should only happen if there is a bug
wxASSERT(false);
return false;
}
seq->AppendBlockFile(blockFile);
clip->UpdateEnvelopeTrackLen();
} else if (wxStrcmp(tag, wxT("recordingrecovery")) == 0)
{
mAutoSaveIdent = 0;
// loop through attrs, which is a null-terminated list of
// attribute-value pairs
long nValue;
while(*attrs)
{
const wxChar *attr = *attrs++;
const wxChar *value = *attrs++;
if (!value)
break;
const wxString strValue = value;
//this channels value does not correspond to WaveTrack::Left/Right/Mono, but which channel of the recording device
//it came from, and thus we can't use XMLValueChecker::IsValidChannel on it. Rather we compare to the next attribute value.
if (wxStrcmp(attr, wxT("channel")) == 0)
{
if (!XMLValueChecker::IsGoodInt(strValue) || !strValue.ToLong(&nValue) || nValue < 0)
return false;
mChannel = nValue;
}
else if (wxStrcmp(attr, wxT("numchannels")) == 0)
{
if (!XMLValueChecker::IsGoodInt(strValue) || !strValue.ToLong(&nValue) ||
(nValue < 1))
return false;
if(mChannel >= nValue )
return false;
mNumChannels = nValue;
}
else if (wxStrcmp(attr, wxT("id")) == 0)
{
if (!XMLValueChecker::IsGoodInt(strValue) || !strValue.ToLong(&nValue) ||
(nValue < 1))
return false;
mAutoSaveIdent = nValue;
}
}
}
return true;
}
void RecordingRecoveryHandler::HandleXMLEndTag(const wxChar *tag)
{
if (wxStrcmp(tag, wxT("simpleblockfile")) == 0)
// Still in inner looop
return;
WaveTrackArray tracks = mProject->GetTracks()->GetWaveTrackArray(false);
int index = FindTrack();
// We need to find the track and sequence where the blockfile belongs
if (index < 0 || index >= (int)tracks.size()) {
// This should only happen if there is a bug
wxASSERT(false);
}
else {
WaveTrack* track = tracks[index];
WaveClip* clip = track->NewestOrNewClip();
Sequence* seq = clip->GetSequence();
seq->ConsistencyCheck(wxT("RecordingRecoveryHandler::HandleXMLEndTag"));
}
}
XMLTagHandler* RecordingRecoveryHandler::HandleXMLChild(const wxChar *tag)
{
if (wxStrcmp(tag, wxT("simpleblockfile")) == 0)
return this; // HandleXMLTag also handles <simpleblockfile>
return NULL;
}
///
/// AutoSaveFile class
///
// Simple "binary xml" format used exclusively for autosave files.
//
// It is not intended to transport these files across platform architectures,
// so endianness is not a concern.
//
// It is not intended that the user view or modify the file.
//
// It IS intended that very little work be done during auto save, so numbers
// and strings are written in their native format. They will be converted
// during recovery.
//
// The file has 3 main sections:
//
// ident literal "<?xml autosave>"
// name dictionary dictionary of all names used in the document
// data fields the "encoded" XML document
//
// If a subtree is added, it will be preceeded with FT_Push to tell the decoder
// to preserve the active dictionary. The decoder will then restore the
// dictionary when an FT_Pop is encountered. Nesting is unlimited.
//
// To save space, each name (attribute or element) encountered is stored in
// the name dictionary and replaced with the assigned 2-byte identifier.
//
// All strings are in native unicode format, 2-byte or 4-byte.
//
// All "lengths" are 2-byte signed, so are limited to 32767 bytes long.
enum FieldTypes
{
FT_StartTag, // type, ID, name
FT_EndTag, // type, ID, name
FT_String, // type, ID, name, string length, string
FT_Int, // type, ID, value
FT_Bool, // type, ID, value
FT_Long, // type, ID, value
FT_LongLong, // type, ID, value
FT_SizeT, // type, ID, value
FT_Float, // type, ID, value
FT_Double, // type, ID, value
FT_Data, // type, string length, string
FT_Raw, // type, string length, string
FT_Push, // type only
FT_Pop, // type only
FT_Name // type, name length, name
};
#include <wx/arrimpl.cpp>
WX_DEFINE_OBJARRAY(IdMapArray);
AutoSaveFile::AutoSaveFile(size_t allocSize)
{
mAllocSize = allocSize;
}
AutoSaveFile::~AutoSaveFile()
{
}
void AutoSaveFile::StartTag(const wxString & name)
{
mBuffer.PutC(FT_StartTag);
WriteName(name);
}
void AutoSaveFile::EndTag(const wxString & name)
{
mBuffer.PutC(FT_EndTag);
WriteName(name);
}
void AutoSaveFile::WriteAttr(const wxString & name, const wxChar *value)
{
WriteAttr(name, wxString(value));
}
void AutoSaveFile::WriteAttr(const wxString & name, const wxString & value)
{
mBuffer.PutC(FT_String);
WriteName(name);
int len = value.Length() * sizeof(wxChar);
mBuffer.Write(&len, sizeof(len));
mBuffer.Write(value.wx_str(), len);
}
void AutoSaveFile::WriteAttr(const wxString & name, int value)
{
mBuffer.PutC(FT_Int);
WriteName(name);
mBuffer.Write(&value, sizeof(value));
}
void AutoSaveFile::WriteAttr(const wxString & name, bool value)
{
mBuffer.PutC(FT_Bool);
WriteName(name);
mBuffer.Write(&value, sizeof(value));
}
void AutoSaveFile::WriteAttr(const wxString & name, long value)
{
mBuffer.PutC(FT_Long);
WriteName(name);
mBuffer.Write(&value, sizeof(value));
}
void AutoSaveFile::WriteAttr(const wxString & name, long long value)
{
mBuffer.PutC(FT_LongLong);
WriteName(name);
mBuffer.Write(&value, sizeof(value));
}
void AutoSaveFile::WriteAttr(const wxString & name, size_t value)
{
mBuffer.PutC(FT_SizeT);
WriteName(name);
mBuffer.Write(&value, sizeof(value));
}
void AutoSaveFile::WriteAttr(const wxString & name, float value, int digits)
{
mBuffer.PutC(FT_Float);
WriteName(name);
mBuffer.Write(&value, sizeof(value));
mBuffer.Write(&digits, sizeof(digits));
}
void AutoSaveFile::WriteAttr(const wxString & name, double value, int digits)
{
mBuffer.PutC(FT_Double);
WriteName(name);
mBuffer.Write(&value, sizeof(value));
mBuffer.Write(&digits, sizeof(digits));
}
void AutoSaveFile::WriteData(const wxString & value)
{
mBuffer.PutC(FT_Data);
int len = value.Length() * sizeof(wxChar);
mBuffer.Write(&len, sizeof(len));
mBuffer.Write(value.wx_str(), len);
}
void AutoSaveFile::Write(const wxString & value)
{
mBuffer.PutC(FT_Raw);
int len = value.Length() * sizeof(wxChar);
mBuffer.Write(&len, sizeof(len));
mBuffer.Write(value.wx_str(), len);
}
void AutoSaveFile::WriteSubTree(const AutoSaveFile & value)
{
mBuffer.PutC(FT_Push);
wxStreamBuffer *buf = value.mDict.GetOutputStreamBuffer();
mBuffer.Write(buf->GetBufferStart(), buf->GetIntPosition());
buf = value.mBuffer.GetOutputStreamBuffer();
mBuffer.Write(buf->GetBufferStart(), buf->GetIntPosition());
mBuffer.PutC(FT_Pop);
}
bool AutoSaveFile::Write(wxFFile & file) const
{
bool success = file.Write(AutoSaveIdent, strlen(AutoSaveIdent)) == strlen(AutoSaveIdent);
if (success)
{
success = Append(file);
}
return success;
}
bool AutoSaveFile::Append(wxFFile & file) const
{
wxStreamBuffer *buf = mDict.GetOutputStreamBuffer();
bool success = file.Write(buf->GetBufferStart(), buf->GetIntPosition()) == buf->GetIntPosition();
if (success)
{
buf = mBuffer.GetOutputStreamBuffer();
success = file.Write(buf->GetBufferStart(), buf->GetIntPosition()) == buf->GetIntPosition();
}
return success;
}
void AutoSaveFile::CheckSpace(wxMemoryOutputStream & os)
{
wxStreamBuffer *buf = os.GetOutputStreamBuffer();
size_t left = buf->GetBytesLeft();
if (left == 0)
{
size_t origPos = buf->GetIntPosition();
ArrayOf<char> temp{ mAllocSize };
buf->Write(temp.get(), mAllocSize);
buf->SetIntPosition(origPos);
}
}
void AutoSaveFile::WriteName(const wxString & name)
{
wxASSERT(name.Length() * sizeof(wxChar) <= SHRT_MAX);
short len = name.Length() * sizeof(wxChar);
short id;
if (mNames.count(name))
{
id = mNames[name];
}
else
{
id = mNames.size();
mNames[name] = id;
CheckSpace(mDict);
mDict.PutC(FT_Name);
mDict.Write(&id, sizeof(id));
mDict.Write(&len, sizeof(len));
mDict.Write(name.wx_str(), len);
}
CheckSpace(mBuffer);
mBuffer.Write(&id, sizeof(id));
}
bool AutoSaveFile::IsEmpty() const
{
return mBuffer.GetLength() == 0;
}
bool AutoSaveFile::Decode(const wxString & fileName)
{
char ident[sizeof(AutoSaveIdent)];
size_t len = strlen(AutoSaveIdent);
const wxFileName fn(fileName);
const wxString fnPath{fn.GetFullPath()};
wxFFile file;
if (!file.Open(fnPath, wxT("rb")))
{
return false;
}
if (file.Read(&ident, len) != len || strncmp(ident, AutoSaveIdent, len) != 0)
{
// It could be that the file has already been decoded or that it is one
// from 2.1.0 or earlier. In the latter case, we need to ensure the
// closing </project> tag is preset.
// Close the file so we can reopen it in read/write mode
file.Close();
// Add </project> tag, if necessary
if (!file.Open(fnPath, wxT("r+b")))
{
// Really shouldn't happen, but let the caller deal with it
return false;
}
// Read the last 16 bytes of the file and check if they contain
// "</project>" somewhere.
const int bufsize = 16;
char buf[bufsize + 1];
// FIXME: TRAP_ERR AutoSaveFile::Decode reports OK even when wxFFile errors.
// Might be incompletely written file, but not clear that is OK to be
// silent about.
if (file.SeekEnd(-bufsize))
{
if (file.Read(buf, bufsize) == bufsize)
{
buf[bufsize] = 0;
if (strstr(buf, "</project>") == 0)
{
// End of file does not contain closing </project> tag, so add it
if (file.Seek(0, wxFromEnd))
{
strcpy(buf, "</project>\n");
file.Write(buf, strlen(buf));
}
}
}
}
file.Close();
return true;
}
len = file.Length() - len;
using Chars = ArrayOf < char >;
using WxChars = ArrayOf < wxChar >;
Chars buf{ len };
if (file.Read(buf.get(), len) != len)
{
return false;
}
wxMemoryInputStream in(buf.get(), len);
file.Close();
// JKC: ANSWER-ME: Is the try catch actually doing anything?
// If it is useful, why are we not using it everywhere?
// If it isn't useful, why are we doing it here?
// PRL: Yes, now we are doing GuardedCall everywhere that XMLFileWriter is
// used.
return GuardedCall< bool >( [&] {
XMLFileWriter out{ fileName, _("Error Decoding File") };
IdMap mIds;
IdMapArray mIdStack;
mIds.clear();
while ( !in.Eof() )
{
short id;
switch (in.GetC())
{
case FT_Push:
{
mIdStack.Add(mIds);
mIds.clear();
}
break;
case FT_Pop:
{
mIds = mIdStack[mIdStack.GetCount() - 1];
mIdStack.RemoveAt(mIdStack.GetCount() - 1);
}
break;
case FT_Name:
{
short len;
in.Read(&id, sizeof(id));
in.Read(&len, sizeof(len));
WxChars name{ len / sizeof(wxChar) };
in.Read(name.get(), len);
mIds[id] = wxString(name.get(), len / sizeof(wxChar));
}
break;
case FT_StartTag:
{
in.Read(&id, sizeof(id));
out.StartTag(mIds[id]);
}
break;
case FT_EndTag:
{
in.Read(&id, sizeof(id));
out.EndTag(mIds[id]);
}
break;
case FT_String:
{
int len;
in.Read(&id, sizeof(id));
in.Read(&len, sizeof(len));
WxChars val{ len / sizeof(wxChar) };
in.Read(val.get(), len);
out.WriteAttr(mIds[id], wxString(val.get(), len / sizeof(wxChar)));
}
break;
case FT_Float:
{
float val;
int dig;
in.Read(&id, sizeof(id));
in.Read(&val, sizeof(val));
in.Read(&dig, sizeof(dig));
out.WriteAttr(mIds[id], val, dig);
}
break;
case FT_Double:
{
double val;
int dig;
in.Read(&id, sizeof(id));
in.Read(&val, sizeof(val));
in.Read(&dig, sizeof(dig));
out.WriteAttr(mIds[id], val, dig);
}
break;
case FT_Int:
{
int val;
in.Read(&id, sizeof(id));
in.Read(&val, sizeof(val));
out.WriteAttr(mIds[id], val);
}
break;
case FT_Bool:
{
bool val;
in.Read(&id, sizeof(id));
in.Read(&val, sizeof(val));
out.WriteAttr(mIds[id], val);
}
break;
case FT_Long:
{
long val;
in.Read(&id, sizeof(id));
in.Read(&val, sizeof(val));
out.WriteAttr(mIds[id], val);
}
break;
case FT_LongLong:
{
long long val;
in.Read(&id, sizeof(id));
in.Read(&val, sizeof(val));
out.WriteAttr(mIds[id], val);
}
break;
case FT_SizeT:
{
size_t val;
in.Read(&id, sizeof(id));
in.Read(&val, sizeof(val));
out.WriteAttr(mIds[id], val);
}
break;
case FT_Data:
{
int len;
in.Read(&len, sizeof(len));
WxChars val{ len / sizeof(wxChar) };
in.Read(val.get(), len);
out.WriteData(wxString(val.get(), len / sizeof(wxChar)));
}
break;
case FT_Raw:
{
int len;
in.Read(&len, sizeof(len));
WxChars val{ len / sizeof(wxChar) };
in.Read(val.get(), len);
out.Write(wxString(val.get(), len / sizeof(wxChar)));
}
break;
default:
wxASSERT(true);
break;
}
}
out.Commit();
return true;
} );
}
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