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Fix and improve win32 path validation. 

llvm-svn: 19545
This commit is contained in:
Jeff Cohen 2005-01-14 04:09:39 +00:00
parent cbeed3571a
commit e246cdc946
1 changed files with 22 additions and 10 deletions
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32
llvm/lib/System/Win32/Path.inc
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@ -55,17 +55,29 @@ Path::isValid() const {
!= std::string::npos)
return false;
// A file or directory name may not end in a period.
if (path[len-1] == '.')
return false;
if (len >= 2 && path[len-2] == '.' && path[len-1] == '/')
return false;
// Check each component for legality.
for (pos = 0; pos < len; ++pos) {
// A component may not end in a space.
if (path[pos] == ' ') {
if (path[pos+1] == '/' || path[pos+1] == '\0')
return false;
}
// A file or directory name may not end in a space.
if (path[len-1] == ' ')
return false;
if (len >= 2 && path[len-2] == ' ' && path[len-1] == '/')
return false;
// A component may not end in a period.
if (path[pos] == '.') {
if (path[pos+1] == '/' || path[pos+1] == '\0') {
// Unless it is the pseudo-directory "."...
if (pos == 0 || path[pos-1] == '/' || path[pos-1] == ':')
return true;
// or "..".
if (pos > 0 && path[pos-1] == '.') {
if (pos == 1 || path[pos-2] == '/' || path[pos-2] == ':')
return true;
}
return false;
}
}
}
return true;
}