application-prototype
Version:
Application builder - prototype
85 lines (82 loc) • 1.95 kB
JavaScript
module.exports =
/**
* parse array from csv string
* @function
* @param {string} data CSV Content
* @return {Array<Array<string>>} matrix of csv cells
*/
function (data) {
var i;
var cell = [0, 0];
var cells = [[]];
var state = "cell:init";
for (i=0;i<data.length;i++) {
switch (state) {
case "cell:init":
cells[cell[0]] = cells[cell[0]] || [];
cells[cell[0]][cell[1]] = "";
if (data[i] === "\"") {
state = "cell:data-escaped";
} else if (data[i] === ",") {
cell[1]++;
state = "cell:init";
} else if (data[i] === "\n") {
cell[0]++;
cell[1] = 0;
state = "cell:init";
} else {
cells[cell[0]][cell[1]] += data[i];
state = "cell:data";
}
break;
case "cell:data":
if (data[i] === ",") {
cell[1]++;
state = "cell:init";
} else if (data[i] === "\n") {
cell[0]++;
cell[1] = 0;
state = "cell:init";
} else {
cells[cell[0]][cell[1]] += data[i];
}
break;
case "cell:data-escaped":
if (data[i] === "\"") {
state = "cell:data-escaped:quote"
} else {
cells[cell[0]][cell[1]] += data[i];
}
break;
case "cell:data-escaped:quote":
if (data[i] = ",") {
cell[1]++;
state = "cell:init";
} else if (data[i] === "\n") {
cell[0]++;
cell[1] = 0;
state = "cell:init";
} else if (data[i] === "\"") {
cells[cell[0]][cell[1]] += data[i];
state = "cell:data-escaped";
} else {
cells[cell[0]][cell[1]] += data[i];
state = "cell:data-escaped";
console.warn("Incorrect CSV Escape of ", data[i], "by", data[i-1]);
}
break;
}
if (i === data.length - 1) {
if (state === "cell:init") {
cells[cell[0]] = cells[cell[0]] || [];
cells[cell[0]][cell[1]] = "";
}
}
}
if (cells.length > 1) {
if (cells[cells.length-1].filter(function (v) { return !!v; }).length === 0) {
cells.pop();
}
}
return cells;
};