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David Luzar 2020-09-04 14:58:32 +02:00 • committed by GitHub
parent 950ec66907
commit 47dba05c91
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7 changed files with 155 additions and 91 deletions
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34
src/charts.ts
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@ -4,19 +4,23 @@ import { AppState } from "./types";
import { t } from "./i18n";
import { DEFAULT_VERTICAL_ALIGN } from "./constants";
interface Spreadsheet {
export interface Spreadsheet {
yAxisLabel: string | null;
labels: string[] | null;
values: number[];
}
export const NOT_SPREADSHEET = "NOT_SPREADSHEET";
export const MALFORMED_SPREADSHEET = "MALFORMED_SPREADSHEET";
export const VALID_SPREADSHEET = "VALID_SPREADSHEET";
type ParseSpreadsheetResult =
| {
type: "not a spreadsheet";
type: typeof NOT_SPREADSHEET;
}
| { type: "spreadsheet"; spreadsheet: Spreadsheet }
| { type: typeof VALID_SPREADSHEET; spreadsheet: Spreadsheet }
| {
type: "malformed spreadsheet";
type: typeof MALFORMED_SPREADSHEET;
error: string;
};
@ -38,12 +42,12 @@ function tryParseCells(cells: string[][]): ParseSpreadsheetResult {
const numCols = cells[0].length;
if (numCols > 2) {
return { type: "malformed spreadsheet", error: t("charts.tooManyColumns") };
return { type: MALFORMED_SPREADSHEET, error: t("charts.tooManyColumns") };
}
if (numCols === 1) {
if (!isNumericColumn(cells, 0)) {
return { type: "not a spreadsheet" };
return { type: NOT_SPREADSHEET };
}
const hasHeader = tryParseNumber(cells[0][0]) === null;
@ -52,11 +56,11 @@ function tryParseCells(cells: string[][]): ParseSpreadsheetResult {
);
if (values.length < 2) {
return { type: "not a spreadsheet" };
return { type: NOT_SPREADSHEET };
}
return {
type: "spreadsheet",
type: VALID_SPREADSHEET,
spreadsheet: {
yAxisLabel: hasHeader ? cells[0][0] : null,
labels: null,
@ -69,7 +73,7 @@ function tryParseCells(cells: string[][]): ParseSpreadsheetResult {
if (!isNumericColumn(cells, valueColumnIndex)) {
return {
type: "malformed spreadsheet",
type: MALFORMED_SPREADSHEET,
error: t("charts.noNumericColumn"),
};
}
@ -79,11 +83,11 @@ function tryParseCells(cells: string[][]): ParseSpreadsheetResult {
const rows = hasHeader ? cells.slice(1) : cells;
if (rows.length < 2) {
return { type: "not a spreadsheet" };
return { type: NOT_SPREADSHEET };
}
return {
type: "spreadsheet",
type: VALID_SPREADSHEET,
spreadsheet: {
yAxisLabel: hasHeader ? cells[0][valueColumnIndex] : null,
labels: rows.map((row) => row[labelColumnIndex]),
@ -114,7 +118,7 @@ export function tryParseSpreadsheet(text: string): ParseSpreadsheetResult {
.map((line) => line.trim().split("\t"));
if (lines.length === 0) {
return { type: "not a spreadsheet" };
return { type: NOT_SPREADSHEET };
}
const numColsFirstLine = lines[0].length;
@ -123,13 +127,13 @@ export function tryParseSpreadsheet(text: string): ParseSpreadsheetResult {
);
if (!isASpreadsheet) {
return { type: "not a spreadsheet" };
return { type: NOT_SPREADSHEET };
}
const result = tryParseCells(lines);
if (result.type !== "spreadsheet") {
if (result.type !== VALID_SPREADSHEET) {
const transposedResults = tryParseCells(transposeCells(lines));
if (transposedResults.type === "spreadsheet") {
if (transposedResults.type === VALID_SPREADSHEET) {
return transposedResults;
}
}