fixed fromCsv escaping quotes & letter headers
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This commit is contained in:
2024-11-09 17:27:05 -05:00
parent 341ef37205
commit ccf3fcb043
3 changed files with 27 additions and 8 deletions

View File

@ -1,20 +1,39 @@
import {ASet} from './aset.ts';
import {dotNotation, flattenObj, JSONSanitize} from './objects.ts';
import {LETTER_LIST} from './string.ts';
export function fromCsv<T = any>(csv: string, hasHeaders=true): T[] {
const row = csv.split('\n');
let headers: any = hasHeaders ? row.splice(0, 1)[0] : null;
if(headers) headers = headers.match(/(?:[^,"']+|"[^"]*"|'[^']*')+/g);
return <T[]>row.map(r => {
const props: string[] = <any>r.match(/(?:[^,"']+|"[^"]*"|'[^']*')+/g);
function parseLine(line: string): (string | null)[] {
const parts = line.split(','), columns: string[] = [];
let quoted = false;
for(const p of parts) {
if(quoted) columns[columns.length - 1] = columns.at(-1) + ',' + p;
else columns.push(p);
if(/[^"]"$/g.test(p)) {
quoted = false;
} else if(/^"[^"]/g.test(p)) {
quoted = true;
}
}
return columns;
}
const props = parseLine(r);
const h = headers || (Array(props.length).fill(null).map((r, i) => {
let letter = '';
const first = i / 26;
if(first > 1) letter +=
i % 26
i
if(first > 1) letter += LETTER_LIST[Math.floor(first - 1)];
letter += LETTER_LIST[i % 26];
return letter;
}));
return h.reduce((acc: any, h: any, i: number) => ({...acc, [h]: props[i]}), {})
return h.reduce((acc: any, h: any, i: number) => {
dotNotation(acc, h, props[i]);
return acc;
}, {});
})
}