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import CSVError from "./CSVError";
import { CellParser, ColumnParam } from "./Parameters";
import set from "lodash/set";
import { ParseRuntime } from "./ParseRuntime";
var numReg = /^[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?$/;
export default function (csvRows: string[][], conv: Converter): JSONResult[] {
const res: JSONResult[] = [];
for (let i = 0, len = csvRows.length; i < len; i++) {
const r = processRow(csvRows[i], conv, i);
if (r) {
res.push(r);
}
}
return res;
};
export type JSONResult = {
[key: string]: any
}
function processRow(row: string[], conv: Converter, index): JSONResult | null {
if (conv.parseParam.checkColumn && conv.parseRuntime.headers && row.length !== conv.parseRuntime.headers.length) {
throw (CSVError.column_mismatched(conv.parseRuntime.parsedLineNumber + index))
}
const headRow = conv.parseRuntime.headers || [];
const resultRow = convertRowToJson(row, headRow, conv);
if (resultRow) {
return resultRow;
} else {
return null;
}
}
function convertRowToJson(row: string[], headRow: string[], conv: Converter): { [key: string]: any } | null {
let hasValue = false;
const resultRow = {};
for (let i = 0, len = row.length; i < len; i++) {
let item = row[i];
if (conv.parseParam.ignoreEmpty && item === '') {
continue;
}
hasValue = true;
let head = headRow[i];
if (!head || head === "") {
head = headRow[i] = "field" + (i + 1);
}
const convFunc = getConvFunc(head, i, conv);
if (convFunc) {
const convRes = convFunc(item, head, resultRow, row, i);
if (convRes !== undefined) {
setPath(resultRow, head, convRes, conv,i);
}
} else {
// var flag = getFlag(head, i, param);
// if (flag === 'omit') {
// continue;
// }
if (conv.parseParam.checkType) {
const convertFunc = checkType(item, head, i, conv);
item = convertFunc(item);
}
Eif (item !== undefined) {
setPath(resultRow, head, item, conv,i);
}
}
}
if (hasValue) {
return resultRow;
} else {
return null;
}
}
const builtInConv: { [key: string]: CellParser } = {
"string": stringType,
"number": numberType,
"omit": function () { }
}
function getConvFunc(head: string, i: number, conv: Converter): CellParser | null {
if (conv.parseRuntime.columnConv[i] !== undefined) {
return conv.parseRuntime.columnConv[i];
} else {
let flag = conv.parseParam.colParser[head];
if (flag === undefined) {
return conv.parseRuntime.columnConv[i] = null;
}
if (typeof flag === "object") {
flag = (flag as ColumnParam).cellParser || "string";
}
if (typeof flag === "string") {
flag = flag.trim().toLowerCase();
const builtInFunc = builtInConv[flag];
Eif (builtInFunc) {
return conv.parseRuntime.columnConv[i] = builtInFunc;
} else {
return conv.parseRuntime.columnConv[i] = null;
}
} else Eif (typeof flag === "function") {
return conv.parseRuntime.columnConv[i] = flag;
} else {
return conv.parseRuntime.columnConv[i] = null;
}
}
}
function setPath(resultJson: any, head: string, value: any, conv: Converter,headIdx:number) {
if (!conv.parseRuntime.columnValueSetter[headIdx]) {
if (conv.parseParam.flatKeys) {
conv.parseRuntime.columnValueSetter[headIdx] = flatSetter;
} else {
if (head.indexOf(".") > -1) {
if (conv.parseParam.colParser[head] && (conv.parseParam.colParser[head] as ColumnParam).flat) {
conv.parseRuntime.columnValueSetter[headIdx] = flatSetter;
} else {
conv.parseRuntime.columnValueSetter[headIdx] = jsonSetter;
}
} else {
conv.parseRuntime.columnValueSetter[headIdx] = flatSetter;
}
}
}
conv.parseRuntime.columnValueSetter[headIdx](resultJson, head, value);
// flatSetter(resultJson, head, value);
}
function flatSetter(resultJson: any, head: string, value: any) {
resultJson[head] = value;
}
function jsonSetter(resultJson: any, head: string, value: any) {
set(resultJson, head, value);
}
function checkType(item: string, head: string, headIdx: number, conv: Converter): Function {
if (conv.parseRuntime.headerType[headIdx]) {
return conv.parseRuntime.headerType[headIdx];
} else Iif (head.indexOf('number#!') > -1) {
return conv.parseRuntime.headerType[headIdx] = numberType;
} else Iif (head.indexOf('string#!') > -1) {
return conv.parseRuntime.headerType[headIdx] = stringType;
} else Eif (conv.parseParam.checkType) {
return conv.parseRuntime.headerType[headIdx] = dynamicType;
} else {
return conv.parseRuntime.headerType[headIdx] = stringType;
}
}
function numberType(item) {
var rtn = parseFloat(item);
if (isNaN(rtn)) {
return item;
}
return rtn;
}
function stringType(item: string): string {
return item.toString();
}
function dynamicType(item) {
var trimed = item.trim();
if (trimed === "") {
return stringType(item);
}
if (numReg.test(trimed)) {
return numberType(item);
} else if (trimed.length === 5 && trimed.toLowerCase() === "false" || trimed.length === 4 && trimed.toLowerCase() === "true") {
return booleanType(item);
} else if (trimed[0] === "{" && trimed[trimed.length - 1] === "}" || trimed[0] === "[" && trimed[trimed.length - 1] === "]") {
return jsonType(item);
} else {
return stringType(item);
}
}
function booleanType(item) {
var trimed = item.trim();
if (trimed.length === 5 && trimed.toLowerCase() === "false") {
return false;
} else {
return true;
}
}
function jsonType(item) {
try {
return JSON.parse(item);
} catch (e) {
return item;
}
}
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