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Code Issues Releases Wiki Activity

Allow recovery of 2.1.0 or earlier autosave files

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This commit is contained in:
Leland Lucius
2015-04-19 00:36:55 -05:00
parent 5d415e69d5
commit 0c0650588a
2 changed files with 35 additions and 7 deletions
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38
src/AutoRecovery.cpp
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@@ -637,8 +637,41 @@ bool AutoSaveFile::Decode(const wxString & fileName)
if (file.Read(&ident, len) != len || strncmp(ident, AutoSaveIdent, len) != 0)
{
// Not something we recognize. Could be decoded already. Let the caller
// deal with it.
// 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(fn.GetFullPath(), wxT("r+")))
{
// 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];
if (file.SeekEnd(-bufsize) != wxInvalidOffset)
{
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) != wxInvalidOffset)
{
strcpy(buf, "</project>\n");
file.Write(buf, strlen(buf));
}
}
}
}
file.Close();
return true;
@@ -650,7 +683,6 @@ bool AutoSaveFile::Decode(const wxString & fileName)
if (file.Read(buf, len) != len)
{
delete buf;
file.Close();
return false;
}