function readPlainScalar()

in brooklyn-ui/src/main/webapp/assets/js/libs/js-yaml.js [1085:1192]
91 lines of code
35 McCabe index (conditional complexity)

function readPlainScalar(state, nodeIndent, withinFlowCollection) {
  var preceding,
      following,
      captureStart,
      captureEnd,
      hasPendingContent,
      _line,
      _lineStart,
      _lineIndent,
      _kind = state.kind,
      _result = state.result,
      ch;

  ch = state.input.charCodeAt(state.position);

  if (is_WS_OR_EOL(ch)             ||
      is_FLOW_INDICATOR(ch)        ||
      0x23/* # */           === ch ||
      0x26/* & */           === ch ||
      0x2A/* * */           === ch ||
      0x21/* ! */           === ch ||
      0x7C/* | */           === ch ||
      0x3E/* > */           === ch ||
      0x27/* ' */           === ch ||
      0x22/* " */           === ch ||
      0x25/* % */           === ch ||
      0x40/* @ */           === ch ||
      0x60/* ` */           === ch) {
    return false;
  }

  if (0x3F/* ? */ === ch || 0x2D/* - */ === ch) {
    following = state.input.charCodeAt(state.position + 1);

    if (is_WS_OR_EOL(following) ||
        withinFlowCollection && is_FLOW_INDICATOR(following)) {
      return false;
    }
  }

  state.kind = 'scalar';
  state.result = '';
  captureStart = captureEnd = state.position;
  hasPendingContent = false;

  while (0 !== ch) {
    if (0x3A/* : */ === ch) {
      following = state.input.charCodeAt(state.position+1);

      if (is_WS_OR_EOL(following) ||
          withinFlowCollection && is_FLOW_INDICATOR(following)) {
        break;
      }

    } else if (0x23/* # */ === ch) {
      preceding = state.input.charCodeAt(state.position - 1);

      if (is_WS_OR_EOL(preceding)) {
        break;
      }

    } else if ((state.position === state.lineStart && testDocumentSeparator(state)) ||
               withinFlowCollection && is_FLOW_INDICATOR(ch)) {
      break;

    } else if (is_EOL(ch)) {
      _line = state.line;
      _lineStart = state.lineStart;
      _lineIndent = state.lineIndent;
      skipSeparationSpace(state, false, -1);

      if (state.lineIndent >= nodeIndent) {
        hasPendingContent = true;
        ch = state.input.charCodeAt(state.position);
        continue;
      } else {
        state.position = captureEnd;
        state.line = _line;
        state.lineStart = _lineStart;
        state.lineIndent = _lineIndent;
        break;
      }
    }

    if (hasPendingContent) {
      captureSegment(state, captureStart, captureEnd, false);
      writeFoldedLines(state, state.line - _line);
      captureStart = captureEnd = state.position;
      hasPendingContent = false;
    }

    if (!is_WHITE_SPACE(ch)) {
      captureEnd = state.position + 1;
    }

    ch = state.input.charCodeAt(++state.position);
  }

  captureSegment(state, captureStart, captureEnd, false);

  if (state.result) {
    return true;
  } else {
    state.kind = _kind;
    state.result = _result;
    return false;
  }
}