mecano/lib/misc/diff.js

Common functions for system deployment.

// Generated by CoffeeScript 1.9.1
var diff, pad, string;

module.exports = function(source, target, options) {
  var count_added, count_removed, i, len, line, lines, ls, padsize, results;
  if (!options.diff) {
    return;
  }
  lines = diff.diffLines(target, source);
  if (typeof options.diff === 'function') {
    options.diff(lines);
  }
  if (options.stdout) {
    count_added = count_removed = 0;
    padsize = Math.ceil(lines.length / 10);
    results = [];
    for (i = 0, len = lines.length; i < len; i++) {
      line = lines[i];
      if (line.value === null) {
        continue;
      }
      if (!line.added && !line.removed) {
        count_added++;
        count_removed++;
        continue;
      }
      ls = string.lines(line.value);
      if (line.added) {
        results.push((function() {
          var j, len1, results1;
          results1 = [];
          for (j = 0, len1 = ls.length; j < len1; j++) {
            line = ls[j];
            count_added++;
            results1.push(options.stdout.write((pad(padsize, '' + count_added)) + " + " + line + "\n"));
          }
          return results1;
        })());
      } else {
        results.push((function() {
          var j, len1, results1;
          results1 = [];
          for (j = 0, len1 = ls.length; j < len1; j++) {
            line = ls[j];
            count_removed++;
            results1.push(options.stdout.write((pad(padsize, '' + count_removed)) + " - " + line + "\n"));
          }
          return results1;
        })());
      }
    }
    return results;
  }
};

pad = require('pad');

diff = require('diff');

string = require('./string');