| private static VerifyValidPunctuation ( __DTString &str ) : Boolean | ||
| str | __DTString | |
| return | Boolean | |
private static Boolean VerifyValidPunctuation(ref __DTString str) {
// Compatability Behavior. Allow trailing nulls and surrounding hashes
Char ch = str.Value[str.Index];
if (ch == '#') {
bool foundStart = false;
bool foundEnd = false;
for (int i = 0; i < str.len; i++) {
ch = str.Value[i];
if (ch == '#') {
if (foundStart) {
if (foundEnd) {
// Having more than two hashes is invalid
return false;
}
else {
foundEnd = true;
}
}
else {
foundStart = true;
}
}
else if (ch == '\0') {
// Allow nulls only at the end
if (!foundEnd) {
return false;
}
}
else if ((!Char.IsWhiteSpace(ch))) {
// Anthyhing other than whitespace outside hashes is invalid
if (!foundStart || foundEnd) {
return false;
}
}
}
if (!foundEnd) {
// The has was un-paired
return false;
}
// Valid Hash usage: eat the hash and continue.
str.GetNext();
return true;
}
else if (ch == '\0') {
for (int i = str.Index; i < str.len; i++) {
if (str.Value[i] != '\0') {
// Nulls are only valid if they are the only trailing character
return false;
}
}
// Move to the end of the string
str.Index = str.len;
return true;
}
return false;
}
