update at 2026-02-08 18:28:39

miniprogram/utils/core/text-layout.js

@@ -0,0 +1,36 @@
+const MAX_CHARS_PER_LINE = 45
+
+function normalizeLineBreaks(text) {
+  return String(text || '').replace(/\r\n?/g, '\n')
+}
+
+function wrapTextByChars(text, maxCharsPerLine = MAX_CHARS_PER_LINE) {
+  if (maxCharsPerLine <= 0) {
+    return normalizeLineBreaks(text)
+  }
+
+  const normalized = normalizeLineBreaks(text)
+  const lines = normalized.split('\n')
+  const wrappedLines = []
+
+  for (const line of lines) {
+    const chars = Array.from(line)
+
+    if (!chars.length) {
+      wrappedLines.push('')
+      continue
+    }
+
+    for (let i = 0; i < chars.length; i += maxCharsPerLine) {
+      wrappedLines.push(chars.slice(i, i + maxCharsPerLine).join(''))
+    }
+  }
+
+  return wrappedLines.join('\n')
+}
+
+module.exports = {
+  MAX_CHARS_PER_LINE,
+  normalizeLineBreaks,
+  wrapTextByChars,
+}