static bool GetMailToEndIndex(UrlMatch match, char[] text, int startIndex, int matchIndex, int endIndex)
{
char close = GetClosingBrace(match, text, startIndex);
int contentIndex = matchIndex + match.Pattern.Length;
int index = contentIndex;
if (contentIndex >= endIndex)
{
return(false);
}
if (!SkipAddrspec(text, endIndex, ref index))
{
index = contentIndex;
}
if (index < endIndex && text[index] == '?')
{
index++;
while (index < endIndex && IsUrlSafe(text[index]) && text[index] != close)
{
index++;
}
}
match.EndIndex = index;
return(index > contentIndex);
}
public bool Scan(char[] text, int startIndex, int count, out UrlMatch match)
{
GetIndexDelegate getStartIndex, getEndIndex;
int endIndex = startIndex + count;
UrlPattern url;
string pattern;
int index;
if ((index = trie.Search(text, startIndex, count, out pattern)) == -1)
{
match = null;
return(false);
}
if (!patterns.TryGetValue(pattern, out url))
{
match = null;
return(false);
}
match = new UrlMatch(url.Pattern, url.Prefix);
switch (url.Type)
{
case UrlPatternType.Addrspec:
getStartIndex = GetAddrspecStartIndex;
getEndIndex = GetAddrspecEndIndex;
break;
case UrlPatternType.MailTo:
getStartIndex = GetMailToStartIndex;
getEndIndex = GetMailToEndIndex;
break;
case UrlPatternType.File:
getStartIndex = GetFileStartIndex;
getEndIndex = GetFileEndIndex;
break;
default:
getStartIndex = GetWebStartIndex;
getEndIndex = GetWebEndIndex;
break;
}
if (!getStartIndex(match, text, startIndex, index, endIndex))
{
match = null;
return(false);
}
if (!getEndIndex(match, text, startIndex, index, endIndex))
{
match = null;
return(false);
}
return(true);
}
static bool GetAddrspecEndIndex(UrlMatch match, char[] text, int startIndex, int matchIndex, int endIndex)
{
int index = matchIndex + 1;
if (index == endIndex)
{
return(false);
}
if (text[index] != '[')
{
// domain
if (!SkipDomain(text, endIndex, ref index))
{
return(false);
}
match.EndIndex = index;
return(true);
}
// address literal
index++;
// we need at least 8 more characters
if (index + 8 >= endIndex)
{
return(false);
}
if (IsIPv6(text, index))
{
index += "IPv6:".Length;
if (!SkipIPv6Literal(text, endIndex, ref index))
{
return(false);
}
}
else
{
if (!SkipIPv4Literal(text, endIndex, ref index))
{
return(false);
}
}
if (index >= endIndex || text[index++] != ']')
{
return(false);
}
match.EndIndex = index;
return(true);
}
public bool Scan (char[] text, int startIndex, int count, out UrlMatch match)
{
GetIndexDelegate getStartIndex, getEndIndex;
int endIndex = startIndex + count;
UrlPattern url;
string pattern;
int index;
if ((index = trie.Search (text, startIndex, count, out pattern)) == -1) {
match = null;
return false;
}
if (!patterns.TryGetValue (pattern, out url)) {
match = null;
return false;
}
match = new UrlMatch (url.Pattern, url.Prefix);
switch (url.Type) {
case UrlPatternType.Addrspec:
getStartIndex = GetAddrspecStartIndex;
getEndIndex = GetAddrspecEndIndex;
break;
case UrlPatternType.MailTo:
getStartIndex = GetMailToStartIndex;
getEndIndex = GetMailToEndIndex;
break;
case UrlPatternType.File:
getStartIndex = GetFileStartIndex;
getEndIndex = GetFileEndIndex;
break;
default:
getStartIndex = GetWebStartIndex;
getEndIndex = GetWebEndIndex;
break;
}
if (!getStartIndex (match, text, startIndex, index, endIndex)) {
match = null;
return false;
}
if (!getEndIndex (match, text, startIndex, index, endIndex)) {
match = null;
return false;
}
return true;
}
static bool GetFileEndIndex(UrlMatch match, char[] text, int startIndex, int matchIndex, int endIndex)
{
char close = GetClosingBrace(match, text, startIndex);
int index = matchIndex + match.Pattern.Length;
while (index < endIndex && IsUrlSafe(text[index]) && text[index] != close)
{
index++;
}
match.EndIndex = index;
return(index > matchIndex + match.Pattern.Length);
}
static char GetClosingBrace(UrlMatch match, char[] text, int startIndex)
{
if (match.StartIndex == startIndex)
{
return('\0');
}
switch (text[match.StartIndex - 1])
{
case '(': return(')');
case '{': return('}');
case '[': return(']');
case '<': return('>');
case '|': return('|');
default: return('\0');
}
}
static bool GetAddrspecStartIndex(UrlMatch match, char[] text, int startIndex, int matchIndex, int endIndex)
{
int index = matchIndex - 1;
if (matchIndex == startIndex)
{
return(false);
}
do
{
if (!SkipWordBackwards(text, startIndex, ref index))
{
return(false);
}
if (index == startIndex)
{
break;
}
if (text[index - 1] != '.')
{
break;
}
index -= 2;
if (index <= startIndex)
{
return(false);
}
} while (true);
match.StartIndex = index;
return(true);
}
static bool GetWebEndIndex(UrlMatch match, char[] text, int startIndex, int matchIndex, int endIndex)
{
char close = GetClosingBrace(match, text, startIndex);
int index = matchIndex + match.Pattern.Length;
if (index >= endIndex || !SkipDomain(text, endIndex, ref index))
{
return(false);
}
// check for a port
if (index + 1 < endIndex && text[index] == ':' && IsDigit(text[index + 1]))
{
index += 2;
while (index < endIndex && IsDigit(text[index]))
{
index++;
}
}
// check for a path
if (index < endIndex && text[index] == '/')
{
index++;
while (index < endIndex && IsUrlSafe(text[index]) && text[index] != close)
{
index++;
}
}
match.EndIndex = index;
return(true);
}
static bool GetWebStartIndex(UrlMatch match, char[] text, int startIndex, int matchIndex, int endIndex)
{
match.StartIndex = matchIndex;
return(true);
}
static bool GetWebStartIndex (UrlMatch match, char[] text, int startIndex, int matchIndex, int endIndex)
{
match.StartIndex = matchIndex;
return true;
}
static bool GetWebEndIndex (UrlMatch match, char[] text, int startIndex, int matchIndex, int endIndex)
{
char close = GetClosingBrace (match, text, startIndex);
int index = matchIndex + match.Pattern.Length;
if (index >= endIndex || !SkipDomain (text, endIndex, ref index))
return false;
// check for a port
if (index + 1 < endIndex && text[index] == ':' && IsDigit (text[index + 1])) {
index += 2;
while (index < endIndex && IsDigit (text[index]))
index++;
}
// check for a path
if (index < endIndex && text[index] == '/') {
index++;
while (index < endIndex && IsUrlSafe (text[index]) && text[index] != close)
index++;
}
match.EndIndex = index;
return true;
}
static bool GetMailToEndIndex (UrlMatch match, char[] text, int startIndex, int matchIndex, int endIndex)
{
char close = GetClosingBrace (match, text, startIndex);
int contentIndex = matchIndex + match.Pattern.Length;
int index = contentIndex;
if (contentIndex == endIndex)
return false;
if (!SkipAddrspec (text, endIndex, ref index))
index = contentIndex;
if (text[index] == '?') {
index++;
while (index < endIndex && IsUrlSafe (text[index]) && text[index] != close)
index++;
}
match.EndIndex = index;
return index > contentIndex;
}
static bool GetFileEndIndex (UrlMatch match, char[] text, int startIndex, int matchIndex, int endIndex)
{
char close = GetClosingBrace (match, text, startIndex);
int index = matchIndex + match.Pattern.Length;
while (index < endIndex && IsUrlSafe (text[index]) && text[index] != close)
index++;
match.EndIndex = index;
return index > matchIndex + match.Pattern.Length;
}
static bool GetAddrspecEndIndex (UrlMatch match, char[] text, int startIndex, int matchIndex, int endIndex)
{
int index = matchIndex + 1;
if (index == endIndex)
return false;
if (text[index] != '[') {
// domain
if (!SkipDomain (text, endIndex, ref index))
return false;
match.EndIndex = index;
return true;
}
// address literal
index++;
// we need at least 8 more characters
if (index + 8 >= endIndex)
return false;
if (IsIPv6 (text, index)) {
index += "IPv6:".Length;
if (!SkipIPv6Literal (text, endIndex, ref index))
return false;
} else {
if (!SkipIPv4Literal (text, endIndex, ref index))
return false;
}
if (index >= endIndex || text[index++] != ']')
return false;
match.EndIndex = index;
return true;
}
static bool GetAddrspecStartIndex (UrlMatch match, char[] text, int startIndex, int matchIndex, int endIndex)
{
int index = matchIndex - 1;
if (matchIndex == startIndex)
return false;
do {
if (!SkipWordBackwards (text, startIndex, ref index))
return false;
if (index == startIndex)
break;
if (text[index - 1] != '.')
break;
index -= 2;
if (index <= startIndex)
return false;
} while (true);
match.StartIndex = index;
return true;
}
static char GetClosingBrace (UrlMatch match, char[] text, int startIndex)
{
if (match.StartIndex == startIndex)
return '\0';
switch (text[match.StartIndex - 1]) {
case '(': return ')';
case '{': return '}';
case '[': return ']';
case '<': return '>';
case '|': return '|';
default: return '\0';
}
}
