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utils.ts
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utils.ts
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/**
* Get next words from the beginning of [content] until all words have a length lower or equal then [length].
*
* @param length Max length of all words.
* @param content The text content.
*/
import { Cell, ICell } from "./cell.ts";
import { stripColor } from "./deps.ts";
export function consumeWords(length: number, content: string): string {
let consumed = "";
const words: string[] = content.split("\n")[0]?.split(/ /g);
for (let i = 0; i < words.length; i++) {
const word: string = words[i];
// consume minimum one word
if (consumed) {
const nextLength = strLength(word);
const consumedLength = strLength(consumed);
if (consumedLength + nextLength >= length) {
break;
}
}
consumed += (i > 0 ? " " : "") + word;
}
return consumed;
}
/**
* Get longest cell from given row index.
*/
export function longest(
index: number,
rows: ICell[][],
maxWidth?: number,
): number {
const cellLengths = rows.map((row) => {
const cell = row[index];
const cellValue = cell instanceof Cell && cell.getColSpan() > 1
? ""
: cell?.toString() || "";
return cellValue
.split("\n")
.map((line: string) => {
const str = typeof maxWidth === "undefined"
? line
: consumeWords(maxWidth, line);
return strLength(str) || 0;
});
}).flat();
return Math.max(...cellLengths);
}
export const strLength = (str: string): number => {
str = stripColor(str);
let length = 0;
for (let i = 0; i < str.length; i++) {
const charCode = str.charCodeAt(i);
// Check for chinese characters: \u4e00 - \u9fa5
if (charCode >= 19968 && charCode <= 40869) {
length += 2;
} else {
length += 1;
}
}
return length;
};