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// ExtractingFilePath.cpp
#include "StdAfx.h"
#include "ExtractingFilePath.h"
static UString ReplaceIncorrectChars(const UString &s)
{
#ifdef _WIN32
UString res;
for (int i = 0; i < s.Length(); i++)
{
wchar_t c = s[i];
if (c < 0x20 || c == '*' || c == '?' || c == '<' || c == '>' || c == '|' || c == ':' || c == '"')
c = '_';
res += c;
}
res.TrimRight();
return res;
#else
return s;
#endif
}
#ifdef _WIN32
static const wchar_t *g_ReservedNames[] =
{
L"CON", L"PRN", L"AUX", L"NUL"
};
static bool CheckTail(const UString &name, int len)
{
int dotPos = name.Find(L'.');
if (dotPos < 0)
dotPos = name.Length();
UString s = name.Left(dotPos);
s.TrimRight();
return (s.Length() != len);
}
static bool CheckNameNum(const UString &name, const wchar_t *reservedName)
{
int len = MyStringLen(reservedName);
if (name.Length() <= len)
return true;
if (name.Left(len).CompareNoCase(reservedName) != 0)
return true;
wchar_t c = name[len];
if (c < L'0' || c > L'9')
return true;
return CheckTail(name, len + 1);
}
static bool IsSupportedName(const UString &name)
{
for (int i = 0; i < sizeof(g_ReservedNames) / sizeof(g_ReservedNames[0]); i++)
{
const wchar_t *reservedName = g_ReservedNames[i];
int len = MyStringLen(reservedName);
if (name.Length() < len)
continue;
if (name.Left(len).CompareNoCase(reservedName) != 0)
continue;
if (!CheckTail(name, len))
return false;
}
if (!CheckNameNum(name, L"COM"))
return false;
return CheckNameNum(name, L"LPT");
}
#endif
static UString GetCorrectFileName(const UString &path)
{
if (path == L".." || path == L".")
return UString();
return ReplaceIncorrectChars(path);
}
void MakeCorrectPath(UStringVector &pathParts)
{
for (int i = 0; i < pathParts.Size();)
{
UString &s = pathParts[i];
s = GetCorrectFileName(s);
if (s.IsEmpty())
pathParts.Delete(i);
else
{
#ifdef _WIN32
if (!IsSupportedName(s))
s = (UString)L"_" + s;
#endif
i++;
}
}
}
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