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feat(tui): add pad parameter to truncateToWidth, overlay QA tests

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This commit is contained in:
Nico Bailon 2026-01-12 09:53:53 -08:00
parent 0c0aac6599
commit d29f268f46
7 changed files with 641 additions and 10 deletions
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20
packages/tui/src/utils.ts
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@ -650,18 +650,25 @@ export function applyBackgroundToLine(line: string, width: number, bgFn: (text:
/**
* Truncate text to fit within a maximum visible width, adding ellipsis if needed.
* Optionally pad with spaces to reach exactly maxWidth.
* Properly handles ANSI escape codes (they don't count toward width).
*
* @param text - Text to truncate (may contain ANSI codes)
* @param maxWidth - Maximum visible width
* @param ellipsis - Ellipsis string to append when truncating (default: "...")
* @returns Truncated text with ellipsis if it exceeded maxWidth
* @param pad - If true, pad result with spaces to exactly maxWidth (default: false)
* @returns Truncated text, optionally padded to exactly maxWidth
*/
export function truncateToWidth(text: string, maxWidth: number, ellipsis: string = "..."): string {
export function truncateToWidth(
text: string,
maxWidth: number,
ellipsis: string = "...",
pad: boolean = false,
): string {
const textVisibleWidth = visibleWidth(text);
if (textVisibleWidth <= maxWidth) {
return text;
return pad ? text + " ".repeat(maxWidth - textVisibleWidth) : text;
}
const ellipsisWidth = visibleWidth(ellipsis);
@ -722,7 +729,12 @@ export function truncateToWidth(text: string, maxWidth: number, ellipsis: string
}
// Add reset code before ellipsis to prevent styling leaking into it
return `${result}\x1b[0m${ellipsis}`;
const truncated = `${result}\x1b[0m${ellipsis}`;
if (pad) {
const truncatedWidth = visibleWidth(truncated);
return truncated + " ".repeat(Math.max(0, maxWidth - truncatedWidth));
}
return truncated;
}
/**