93 lines
2.1 KiB
JavaScript
93 lines
2.1 KiB
JavaScript
function ArrayParser(source, converter) {
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this.source = source;
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this.converter = converter;
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this.pos = 0;
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this.entries = [];
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this.recorded = [];
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this.dimension = 0;
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if (!this.converter) {
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this.converter = function(entry) {
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return entry;
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};
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}
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}
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ArrayParser.prototype.eof = function() {
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return this.pos >= this.source.length;
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};
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ArrayParser.prototype.nextChar = function() {
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var c;
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if ((c = this.source[this.pos++]) === "\\") {
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return {
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char: this.source[this.pos++],
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escaped: true
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};
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} else {
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return {
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char: c,
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escaped: false
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};
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}
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};
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ArrayParser.prototype.record = function(c) {
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return this.recorded.push(c);
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};
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ArrayParser.prototype.newEntry = function(includeEmpty) {
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var entry;
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if (this.recorded.length > 0 || includeEmpty) {
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entry = this.recorded.join("");
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if (entry === "NULL" && !includeEmpty) {
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entry = null;
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}
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if (entry !== null) {
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entry = this.converter(entry);
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}
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this.entries.push(entry);
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this.recorded = [];
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}
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};
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ArrayParser.prototype.parse = function(nested) {
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var c, p, quote;
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if (nested === null) {
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nested = false;
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}
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quote = false;
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while (!this.eof()) {
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c = this.nextChar();
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if (c.char === "{" && !quote) {
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this.dimension++;
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if (this.dimension > 1) {
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p = new ArrayParser(this.source.substr(this.pos - 1), this.converter);
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this.entries.push(p.parse(true));
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this.pos += p.pos - 2;
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}
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} else if (c.char === "}" && !quote) {
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this.dimension--;
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if (this.dimension === 0) {
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this.newEntry();
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if (nested) {
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return this.entries;
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}
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}
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} else if (c.char === '"' && !c.escaped) {
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if (quote) {
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this.newEntry(true);
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}
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quote = !quote;
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} else if (c.char === ',' && !quote) {
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this.newEntry();
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} else {
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this.record(c.char);
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}
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}
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if (this.dimension !== 0) {
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throw "array dimension not balanced";
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}
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return this.entries;
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};
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module.exports = {
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create: function(source, converter){
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return new ArrayParser(source, converter);
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}
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};
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