rainmelt/html/Parser.js

var Parser = function(v) {
/*
	var s = v;
	var i = 0;

	var END = -1;
	var QUOTATION = -2;

	this.nextChar = function() {
		if (i >= s.length) {
			return END;
		}
		var c = s.charAt(i);
		i++;
		if (c == '"') {
			return QUOTATION;
		} else if (c == '\\') {
			if (i >= s.length) {
				return END;
			}
			c = s.charAt(i);
			i++;
			return c;
		}
		return c;
	};

	this.nextToken = function() {
		if (i >= s.length) {
			return null;
		}

		var b = [];

		var quotation = false;
		var c;
		while ((c = this.nextChar()) != END) {
			if (quotation) {
				if (c == QUOTATION) {
					quotation = false;
				} else {
					b.push(c);
				}
			} else {
				if (c == QUOTATION) {
					quotation = true;
				} else if (c == ' ') {
					break;
				} else {
					b.push(c);
				}
			}
		}

		return b.join('');
	};

	this.getTokens = function() {
		var list = [];

		var a;
		while ((a = this.nextToken()) != null) {
			list.push(a);
		}

		return list;
	};
*/
};

Parser.prototype.setLine = function(line) {
	this.line = line;
	this.index = 0;
	this.originalIndex = this.index;
};

Parser.prototype.isSpace = function(c) {
	return c == ' ' || c == '\t';
};

Parser.prototype.walkToNonSpace = function() {
	while (this.index < this.line.length && this.isSpace(this.line.charAt(this.index))) {
		this.index++;
	}
};

Parser.prototype.nextToken = function() {
	this.walkToNonSpace();
	if (this.index >= this.line.length) {
		return null;
	}

	var buffer = [];
	var quoted = false;

	while (this.index < this.line.length) {
		var c = this.line.charAt(this.index);
		this.index++;

		if (!quoted) {
			if (c == '"') {
				quoted = true;
				continue;
			}
			if (this.isSpace(c)) {
				break;
			}
			buffer.push(c);
		} else {
			if (c == '"') {
				quoted = false;
				continue;
			}
			buffer.push(c);
		}
	}

	return buffer.join('');
};

Parser.prototype.nextOriginalToken = function() {
	if (this.originalIndex >= this.line.length) {
		return null;
	}

	var buffer = [];
	var nonSpaceFound = false;
	var quoted = false;

	while (this.originalIndex < this.line.length) {
		var c = this.line.charAt(this.originalIndex);
		this.originalIndex++;

		if (!quoted) {
			if (c == '"') {
				quoted = true;
				nonSpaceFound = true;
				continue;
			}
			if (this.isSpace(c)) {
				if (nonSpaceFound) {
					this.originalIndex--;
					break;
				}
			} else {
				nonSpaceFound = true;
			}
			buffer.push(c);
		} else {
			if (c == '"') {
				quoted = false;
				continue;
			}
			buffer.push(c);
		}
	}

	return buffer.join('');
};

Parser.prototype.parse = function() {
	this.tokens = [];

	while (this.index < this.line.length) {
		var token = this.nextToken();
		if (token != null) {
			this.tokens.push(token);
		}
	}

	this.originalTokens = [];

	while (this.originalIndex < this.line.length) {
		var originalToken = this.nextOriginalToken();
		if (originalToken != null) {
			this.originalTokens.push(originalToken);
		}
	}
};