feat: add option to truncate long course descriptions to single line (default on, matches official PDF)

2026-08-19 02:02:50 +08:00
parent b3b4495427
commit 106900860a
5 changed files with 57 additions and 4 deletions
@@ -5,7 +5,7 @@ const os = require('node:os');
 const path = require('node:path');
 const { execFileSync } = require('node:child_process');
 global.PDFLib = require('pdf-lib');
-const { buildStudyLoadPdf, compactProgram, deriveDateRange, formatSchedule, formatFullName } = require('../pdf.js');
+const { buildStudyLoadPdf, compactProgram, deriveDateRange, formatSchedule, formatFullName, truncateToWidth } = require('../pdf.js');

 const sampleData = {
  header: {
@@ -88,3 +88,16 @@ test('deriveDateRange maps semesters', () => {
  assert.strictEqual(deriveDateRange('Summer 2026'), 'JUNE - JULY');
  assert.strictEqual(deriveDateRange(''), '');
 });
+
+test('truncateToWidth hard-cuts text to fit within maxWidth', async () => {
+  const doc = await global.PDFLib.PDFDocument.create();
+  const font = doc.embedStandardFont(global.PDFLib.StandardFonts.Helvetica);
+  const longText = 'APPLICATION DEVELOPMENT AND EMERGING TECHNOLOGIES';
+  const tr = truncateToWidth(longText, font, 8, 100);
+  assert.ok(tr.length < longText.length, 'long text should be cut down');
+  assert.ok(longText.startsWith(tr), 'result must be a prefix of the input');
+  assert.ok(font.widthOfTextAtSize(tr, 8) <= 100, 'truncated line must fit maxWidth');
+  const short = 'DATA STRUCTURES';
+  assert.strictEqual(truncateToWidth(short, font, 8, 200), short);
+  assert.strictEqual(truncateToWidth('', font, 8, 200), '');
+});