/* Function: ApplySubstitutions
* Finds all substitutions in the source that match those in the table and replaces them with their values. Will also comment
* out any substitution definitions found.
*/
protected Tokenizer ApplySubstitutions(Tokenizer source, StringToStringTable substitutions, bool applyNestedSubstitutions = true)
{
TokenIterator iterator = source.FirstToken;
// Find the first valid substitution identifier or definition. If there aren't any we don't want to \do unnecessary memory
// allocation and processing.
bool foundSubstitution = false;
string identifier = null;
string localeIdentifier, value, declaration;
while (iterator.IsInBounds)
{
if (TryToSkipSubstitutionIdentifier(ref iterator, out identifier) ||
TryToSkipLocaleSubstitutionIdentifier(ref iterator, out identifier, out localeIdentifier))
{
foundSubstitution = true;
break;
}
// else if (TryToSkipSubstitutionDefinition())
// {
// Unnecessary because definitions will start with identifiers so it will get picked up by that
// }
else
{
GenericSkip(ref iterator);
}
}
if (!foundSubstitution)
{
return(source);
}
// Now that we know we have one, we can back up the iterator and build new output
iterator.PreviousByCharacters(identifier.Length);
StringBuilder output = new StringBuilder(source.RawText.Length);
output.Append(source.RawText, 0, iterator.RawTextIndex);
while (iterator.IsInBounds)
{
TokenIterator previousIterator = iterator;
if (TryToSkipSubstitutionDefinition(ref iterator, out identifier, out value, out declaration))
{
if (this.blockCommentStringPairs != null)
{
output.Append(this.blockCommentStringPairs[0] + ' ' + declaration + ' ' + this.blockCommentStringPairs[1]);
}
}
else if (TryToSkipSubstitutionIdentifier(ref iterator, out identifier))
{
string substitution = substitutions[identifier];
if (substitution == null)
{
output.Append(identifier);
}
else
{
if (applyNestedSubstitutions)
{
substitution = ApplyNestedSubstitutions(substitution, substitutions);
}
output.Append(substitution);
}
}
else if (TryToSkipLocaleSubstitutionIdentifier(ref iterator, out identifier, out localeIdentifier))
{
string substitution = Engine.Locale.SafeGet("NaturalDocs.Engine", localeIdentifier, null);
if (substitution == null)
{
output.Append(identifier);
}
else
{
output.Append('"' + substitution.StringEscape() + '"');
}
}
else
{
GenericSkip(ref iterator);
source.AppendTextBetweenTo(previousIterator, iterator, output);
}
}
return(new Tokenizer(output.ToString()));
}
override public string Process(string javascript, bool shrink = true)
{
Tokenizer source = new Tokenizer(javascript);
StringToStringTable substitutions = FindSubstitutions(source);
source = ApplySubstitutions(source, substitutions);
if (!shrink)
{
return(source.RawText);
}
// Search comments for sections to include in the output
StringBuilder output = new StringBuilder(javascript.Length);
string includeInOutput = FindIncludeInOutput(GetPossibleDocumentationComments(source));
if (includeInOutput != null)
{
output.AppendLine("/*");
output.Append(includeInOutput);
output.AppendLine("*/");
output.AppendLine();
}
// Shrink the source
TokenIterator iterator = source.FirstToken;
string spaceSeparatedSymbols = "+-";
while (iterator.IsInBounds)
{
char lastChar = (output.Length > 0 ? output[output.Length - 1] : '\0');
if (TryToSkipWhitespace(ref iterator) == true) // includes comments
{
char nextChar = iterator.Character;
if ((spaceSeparatedSymbols.IndexOf(lastChar) != -1 &&
spaceSeparatedSymbols.IndexOf(nextChar) != -1) ||
(Tokenizer.FundamentalTypeOf(lastChar) == FundamentalType.Text &&
Tokenizer.FundamentalTypeOf(nextChar) == FundamentalType.Text))
{
output.Append(' ');
}
}
else
{
TokenIterator prevIterator = iterator;
if (TryToSkipString(ref iterator) ||
TryToSkipRegex(ref iterator))
{
source.AppendTextBetweenTo(prevIterator, iterator, output);
}
else
{
iterator.AppendTokenTo(output);
iterator.Next();
}
}
}
return(output.ToString());
}
override public string Process(string css, bool shrink = true)
{
Tokenizer source = new Tokenizer(css);
StringToStringTable substitutions = FindSubstitutions(source);
source = ApplySubstitutions(source, substitutions);
if (!shrink)
{
return(source.RawText);
}
// Search comments for sections to include in the output
StringBuilder output = new StringBuilder(css.Length);
string includeInOutput = FindIncludeInOutput(GetPossibleDocumentationComments(source));
if (includeInOutput != null)
{
output.AppendLine("/*");
output.Append(includeInOutput);
output.AppendLine("*/");
output.AppendLine();
}
// Shrink the source
TokenIterator iterator = source.FirstToken;
// We have to be more cautious than the JavaScript shrinker. You don't want something like "head .class" to become
// "head.class". Colon is a special case because we only want to remove spaces after it ("font-size: 12pt") and not
// before ("body :link").
string safeToCondenseAround = "{},;:+>[]= \0\n\r";
while (iterator.IsInBounds)
{
char lastChar = (output.Length > 0 ? output[output.Length - 1] : '\0');
if (TryToSkipWhitespace(ref iterator)) // includes comments
{
char nextChar = iterator.Character;
if (nextChar == ':' ||
(safeToCondenseAround.IndexOf(lastChar) == -1 &&
safeToCondenseAround.IndexOf(nextChar) == -1))
{
output.Append(' ');
}
}
else
{
TokenIterator prevIterator = iterator;
if (TryToSkipString(ref iterator))
{
source.AppendTextBetweenTo(prevIterator, iterator, output);
}
else
{
if (iterator.Character == '}' && lastChar == ';')
{
// Semicolons are unnecessary at the end of blocks. However, we have to do this here instead of in a
// global search and replace for ";}" because we don't want to alter that sequence if it appears in a string.
output[output.Length - 1] = '}';
}
else
{
iterator.AppendTokenTo(output);
}
iterator.Next();
}
}
}
return(output.ToString());
}
