/// <summary>
/// <see cref="IUnicodeReplacer"/> API
/// </summary>
public virtual string ToReplacerPattern(bool escapeUnprintable)
{
StringBuffer rule = new StringBuffer();
StringBuffer quoteBuf = new StringBuffer();
int cursor = cursorPos;
// Handle a cursor preceding the output
if (hasCursor && cursor < 0)
{
while (cursor++ < 0)
{
Utility.AppendToRule(rule, '@', true, escapeUnprintable, quoteBuf);
}
// Fall through and append '|' below
}
for (int i = 0; i < output.Length; ++i)
{
if (hasCursor && i == cursor)
{
Utility.AppendToRule(rule, '|', true, escapeUnprintable, quoteBuf);
}
char c = output[i]; // Ok to use 16-bits here
IUnicodeReplacer r = data.LookupReplacer(c);
if (r == null)
{
Utility.AppendToRule(rule, c, false, escapeUnprintable, quoteBuf);
}
else
{
StringBuffer buf = new StringBuffer(" ");
buf.Append(r.ToReplacerPattern(escapeUnprintable));
buf.Append(' ');
Utility.AppendToRule(rule, buf.ToString(),
true, escapeUnprintable, quoteBuf);
}
}
// Handle a cursor after the output. Use > rather than >= because
// if cursor == output.length() it is at the end of the output,
// which is the default position, so we need not emit it.
if (hasCursor && cursor > output.Length)
{
cursor -= output.Length;
while (cursor-- > 0)
{
Utility.AppendToRule(rule, '@', true, escapeUnprintable, quoteBuf);
}
Utility.AppendToRule(rule, '|', true, escapeUnprintable, quoteBuf);
}
// Flush quoteBuf out to result
Utility.AppendToRule(rule, -1,
true, escapeUnprintable, quoteBuf);
return(rule.ToString());
}
/// <summary>
/// Create a source string that represents this rule. Append it to the
/// given string.
/// </summary>
public virtual string ToRule(bool escapeUnprintable)
{
// int i;
StringBuffer rule = new StringBuffer();
// Accumulate special characters (and non-specials following them)
// into quoteBuf. Append quoteBuf, within single quotes, when
// a non-quoted element must be inserted.
StringBuffer quoteBuf = new StringBuffer();
// Do not emit the braces '{' '}' around the pattern if there
// is neither anteContext nor postContext.
bool emitBraces =
(anteContext != null) || (postContext != null);
// Emit start anchor
if ((flags & ANCHOR_START) != 0)
{
rule.Append('^');
}
// Emit the input pattern
Utility.AppendToRule(rule, anteContext, escapeUnprintable, quoteBuf);
if (emitBraces)
{
Utility.AppendToRule(rule, '{', true, escapeUnprintable, quoteBuf);
}
Utility.AppendToRule(rule, key, escapeUnprintable, quoteBuf);
if (emitBraces)
{
Utility.AppendToRule(rule, '}', true, escapeUnprintable, quoteBuf);
}
Utility.AppendToRule(rule, postContext, escapeUnprintable, quoteBuf);
// Emit end anchor
if ((flags & ANCHOR_END) != 0)
{
rule.Append('$');
}
Utility.AppendToRule(rule, " > ", true, escapeUnprintable, quoteBuf);
// Emit the output pattern
Utility.AppendToRule(rule, output.ToReplacerPattern(escapeUnprintable),
true, escapeUnprintable, quoteBuf);
Utility.AppendToRule(rule, ';', true, escapeUnprintable, quoteBuf);
return(rule.ToString());
}
/// <summary>
/// <see cref="IUnicodeReplacer"/> API
/// </summary>
public virtual string ToReplacerPattern(bool escapeUnprintable)
{
StringBuilder rule = new StringBuilder("&");
rule.Append(translit.ID);
rule.Append("( ");
rule.Append(replacer.ToReplacerPattern(escapeUnprintable));
rule.Append(" )");
return(rule.ToString());
}