@more-markdown/tree-processor/lib/parser.js

Plugin for more-markdown to support rendering tree files.

var parseTree;

parseTree = function(string, graph) {
  var addName, addToGraph, brackets, c, count, countName, name, parrent, parrents, pos, prevChar, tempName;
  brackets = 0;
  count = 0;
  parrents = [];
  tempName = "";
  name = "";
  countName = "";
  parrent = "";
  addName = function() {
    if (!tempName) {
      return;
    }
    name = tempName;
    tempName = "";
    return countName = name + count++;
  };
  addToGraph = function(graph) {
    var shape;
    shape = "circle";
    if (name === "#" || name === '') {
      shape = "rect";
      name = "";
    }
    graph.setNode(countName, {
      label: name,
      shape: shape
    });
    if (parrent) {
      return graph.setEdge(parrent, countName, {
        label: ""
      });
    }
  };
  prevChar = "";
  pos = 0;
  while (pos < string.length) {
    c = string[pos++];
    switch (c) {
      case ' ':
        if (tempName) {
          addName();
          addToGraph(graph);
        }
        break;
      case '(':
        brackets++;
        if (string[pos] === ')') {
          brackets--;
          tempName = '#';
          addName();
          addToGraph(graph);
          pos++;
        } else {
          addName();
          addToGraph(graph);
          parrent = countName;
          parrents.push(parrent);
        }
        break;
      case ')':
        brackets--;
        addName();
        if (prevChar !== ')') {
          addToGraph(graph);
        }
        parrents.pop();
        parrent = parrents[parrents.length - 1];
        break;
      default:
        if (c !== '\n') {
          tempName += c;
        }
    }
    if (c !== ' ') {
      prevChar = c;
    }
  }
  if (brackets > 0) {
    return console.log("wrong number of brackets " + brackets);
  }
};

module.exports = parseTree;