static unsigned GetRootPrefixSize_Of_NetworkPath(const wchar_t *s) throw()
{
// Network path: we look "server\path\" as root prefix
int pos = FindCharPosInString(s, L'\\');
if (pos < 0)
return 0;
int pos2 = FindCharPosInString(s + pos + 1, L'\\');
if (pos2 < 0)
return 0;
return pos + pos2 + 2;
}
static unsigned GetRootPrefixSize_Of_SuperPath(const wchar_t *s) throw()
{
if (IS_UNC_WITH_SLASH(s + kSuperPathPrefixSize))
{
unsigned size = GetRootPrefixSize_Of_NetworkPath(s + kSuperUncPathPrefixSize);
return (size == 0) ? 0 : kSuperUncPathPrefixSize + size;
}
// we support \\?\c:\ paths and volume GUID paths \\?\Volume{GUID}\"
int pos = FindCharPosInString(s + kSuperPathPrefixSize, L'\\');
if (pos < 0)
return 0;
return kSuperPathPrefixSize + pos + 1;
}
// if (s) contains switch then function updates switch structures
// out: true, if (s) is a switch
bool CParser::ParseString(const UString &s, const CSwitchForm *switchForms)
{
if (s.IsEmpty() || !IsItSwitchChar(s[0]))
return false;
unsigned pos = 1;
unsigned switchIndex = 0;
int maxLen = -1;
for (unsigned i = 0; i < _numSwitches; i++)
{
const char *key = switchForms[i].Key;
unsigned switchLen = MyStringLen(key);
if ((int)switchLen <= maxLen || pos + switchLen > s.Len())
continue;
if (IsString1PrefixedByString2_NoCase((const wchar_t *)s + pos, key))
{
switchIndex = i;
maxLen = switchLen;
}
}
if (maxLen < 0)
{
ErrorMessage = "Unknown switch:";
return false;
}
pos += maxLen;
CSwitchResult &sw = _switches[switchIndex];
const CSwitchForm &form = switchForms[switchIndex];
if (!form.Multi && sw.ThereIs)
{
ErrorMessage = "Multiple instances for switch:";
return false;
}
sw.ThereIs = true;
int rem = s.Len() - pos;
if (rem < form.MinLen)
{
ErrorMessage = "Too short switch:";
return false;
}
sw.WithMinus = false;
sw.PostCharIndex = -1;
switch (form.Type)
{
case NSwitchType::kMinus:
if (rem != 0)
{
sw.WithMinus = (s[pos] == '-');
if (sw.WithMinus)
pos++;
}
break;
case NSwitchType::kChar:
if (rem != 0)
{
wchar_t c = s[pos];
if (c <= 0x7F)
{
sw.PostCharIndex = FindCharPosInString(form.PostCharSet, (char)c);
if (sw.PostCharIndex >= 0)
pos++;
}
}
break;
case NSwitchType::kString:
sw.PostStrings.Add((const wchar_t *)s + pos);
return true;
}
if (pos != s.Len())
{
ErrorMessage = "Too long switch:";
return false;
}
return true;
}
