export function transformParagraph()

in modules/layers/src/text-layer/utils.js [235:282]

• 38 lines of code
• 13 McCabe index (conditional complexity)

export function transformParagraph(paragraph, lineHeight, wordBreak, maxWidth, iconMapping) {
  const result = new Array(paragraph.length);
  const autoWrappingEnabled =
    (wordBreak === 'break-word' || wordBreak === 'break-all') && isFinite(maxWidth) && maxWidth > 0;

  // maxWidth and height of the paragraph
  const size = [0, 0];
  let rowOffsetTop = 0;
  let lineStartIndex = 0;

  for (let i = 0; i <= paragraph.length; i++) {
    const char = paragraph[i];
    let line;
    if (char === '\n' || char === undefined) {
      line = paragraph.slice(lineStartIndex, i);
    }

    if (line) {
      const rows = autoWrappingEnabled
        ? autoWrapping(line, wordBreak, maxWidth, iconMapping).rows
        : [line];

      for (const row of rows) {
        const {rowWidth, rowHeight, leftOffsets} = transformRow(row, iconMapping, lineHeight);

        for (const x of leftOffsets) {
          result[lineStartIndex++] = {
            x,
            y: rowOffsetTop + rowHeight / 2,
            rowWidth
          };
        }

        rowOffsetTop = rowOffsetTop + rowHeight * lineHeight;
        size[0] = autoWrappingEnabled ? maxWidth : Math.max(size[0], rowWidth);
      }
    }

    if (char === '\n') {
      // Make sure result.length matches paragraph.length
      result[lineStartIndex++] = {x: 0, y: 0, rowWidth: 0};
    }
  }

  // last row
  size[1] = rowOffsetTop;
  return {characters: result, size};
}