svg-mapper/bin/cli.js

Tool to slice big, annotated SVG into WebMercator tiles

#!/usr/bin/env node

// Generated by LiveScript 1.2.0
(function(){
  var fs, exec, async, utils, optimist, argv, subSize, subMaxWidth, subMaxHeight, skipTiles, skipJsons, cores, ref$, zoomLevelBoundaries, absoluteOrRelative, absoluteAddress, stat, svgSuffixRegex, files, commands, this$ = this;
  fs = require('fs');
  exec = require('child_process').exec;
  async = require('async');
  utils = require('./utils');
  optimist = require('optimist');
  optimist.usage("Usage: $0 [svg file] -z [num] -s [num] -c [num] [--only-jsons | --only-tiles]").demand(1).demand(['z']).describe("z", "Zoomlevel boundaries (inclusive), eg. 5-8").describe("c", "Number of CPU cores to use")['default']("c", 4).describe("s", "Maximum size of image before slicing")['default']("s", 19).alias("z", "zoom").alias("c", "cores");
  argv = optimist.argv;
  subSize = +argv.s || 19;
  subMaxWidth = subSize * 256;
  subMaxHeight = subSize * 256;
  skipTiles = skipJsons = false;
  if (argv["only-jsons"]) {
    skipTiles = true;
  }
  if (argv["only-tiles"]) {
    skipJsons = true;
  }
  cores = +argv.c || 4;
  if (!((ref$ = argv.z) != null && ref$.match(/[0-9]-[0-9]+/))) {
    console.log("Invalid zoomlevel boundaries, use eg. -z 5-8");
    return;
  }
  zoomLevelBoundaries = argv.z.split("-").map(function(it){
    return parseInt(it, 10);
  });
  absoluteOrRelative = (ref$ = optimist.argv._) != null ? ref$[0] : void 8;
  absoluteAddress = (function(){
    switch (false) {
    case !fs.existsSync(absoluteOrRelative):
      return absoluteOrRelative;
    case !fs.existsSync(process.cwd() + "/" + absoluteOrRelative):
      return process.cwd() + "/" + absoluteOrRelative;
    default:
      throw new Error("File not found: " + absoluteOrRelative);
    }
  }());
  stat = fs.statSync(absoluteAddress);
  svgSuffixRegex = /\.svg$/;
  files = stat.isDirectory()
    ? fs.readdirSync(absoluteAddress).filter(function(it){
      return svgSuffixRegex.test(it);
    }).map(function(it){
      return absoluteAddress + "/" + it;
    })
    : [absoluteAddress];
  commands = [];
  async.eachLimit(files, cores, function(file, cb){
    var dir, this$ = this;
    dir = file.replace(svgSuffixRegex, '');
    dir += "/";
    return fs.mkdir(dir, function(err){
      var cmd;
      if (err) {
        console.log("Directory already exists or is not creatable, skipping: " + dir);
        cb();
        return;
      }
      console.log("Generating metadata for " + file);
      cmd = "node " + __dirname + "/metadata.js -f " + file + " -d " + dir;
      return exec(cmd, function(err, stdout, stderr){
        var bounds;
        [err, stderr].filter(function(it){
          return it;
        }).forEach(function(it){
          throw new Error(it);
        });
        bounds = JSON.parse(
        fs.readFileSync(
        dir + "/data.json")).bounds;
        return utils.prepareLeaflet(function(){
          var zoomLevelDataCurry, zoomLevels;
          zoomLevelDataCurry = function(zoomLevel){
            return utils.getZoomlevelData(bounds, subMaxWidth, subMaxHeight, zoomLevel);
          };
          zoomLevels = (function(){
            var i$, to$, results$ = [];
            for (i$ = zoomLevelBoundaries[0], to$ = zoomLevelBoundaries[1]; i$ <= to$; ++i$) {
              results$.push(i$);
            }
            return results$;
          }()).map(zoomLevelDataCurry);
          console.log("Creating directories");
          return utils.createDirectories(dir, zoomLevels, function(){
            commands = commands.concat(utils.generateCommands(dir, subSize, zoomLevels, {
              skipTiles: skipTiles,
              skipJsons: skipJsons
            }));
            return cb();
          });
        });
      });
    });
  }, function(){
    var i, len, processing;
    i = 0;
    len = commands.length;
    processing = {};
    console.log("Starting tile generation. Using " + cores + " cores to do " + len + " jobs.");
    return async.eachLimit(commands, cores, function(cmd, cb){
      var index, this$ = this;
      index = ++i;
      processing[index] = true;
      process.stdout.write("Started job #" + index + " of " + len + " total.\n");
      return exec(cmd, function(err, stdout, stderr){
        var out, res$, pindex, that;
        process.stdout.write("Done job #" + index + ".");
        delete processing[index];
        res$ = [];
        for (pindex in processing) {
          res$.push(pindex);
        }
        out = res$;
        if (out.length) {
          process.stdout.write(" Still processing jobs #" + out.join(", "));
          process.stdout.write(". Jobs remaining: " + (len - i) + ".");
        }
        process.stdout.write("\n");
        if (that = stderr) {
          console.log(that);
        }
        return cb();
      });
    }, function(){
      return console.log("All done, tiles are now in same directory as " + absoluteAddress);
    });
  });
}).call(this);