82 lines
2.5 KiB
JavaScript
82 lines
2.5 KiB
JavaScript
'use strict';
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var path = require('path'),
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fs = require('fs');
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var clone = require('clone'),
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express = require('express');
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module.exports = function(options, repo, params, id, reportTiles, reportFont) {
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var app = express().disable('x-powered-by');
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var styleFile = path.join(options.paths.styles, params.style);
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var styleJSON = clone(require(styleFile));
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Object.keys(styleJSON.sources).forEach(function(name) {
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var source = styleJSON.sources[name];
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var url = source.url;
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if (url.lastIndexOf('mbtiles:', 0) === 0) {
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var mbtiles = url.substring('mbtiles://'.length);
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var identifier = reportTiles(mbtiles);
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source.url = 'local://data/' + identifier + '.json';
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}
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});
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var findFontReferences = function(obj) {
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Object.keys(obj).forEach(function(key) {
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var value = obj[key];
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if (key == 'text-font') {
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if (value && value.length > 0) {
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value.forEach(reportFont);
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}
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} else if (value && typeof value == 'object') {
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findFontReferences(value);
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}
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});
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};
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styleJSON.layers.forEach(findFontReferences);
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var spritePath = path.join(options.paths.sprites,
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path.basename(styleFile, '.json'));
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styleJSON.sprite = 'local://styles/' + id + '/sprite';
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styleJSON.glyphs = 'local://fonts/{fontstack}/{range}.pbf';
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repo[id] = styleJSON;
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app.get('/' + id + '.json', function(req, res, next) {
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var fixUrl = function(url) {
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return url.replace(
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'local://', req.protocol + '://' + req.headers.host + '/');
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};
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var styleJSON_ = clone(styleJSON);
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Object.keys(styleJSON_.sources).forEach(function(name) {
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var source = styleJSON_.sources[name];
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source.url = fixUrl(source.url);
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});
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styleJSON_.sprite = fixUrl(styleJSON_.sprite);
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styleJSON_.glyphs = fixUrl(styleJSON_.glyphs);
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return res.send(styleJSON_);
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});
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app.get('/' + id + '/sprite:scale(@[23]x)?\.:format([\\w]+)',
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function(req, res, next) {
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var scale = req.params.scale,
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format = req.params.format;
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var filename = spritePath + (scale || '') + '.' + format;
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return fs.readFile(filename, function(err, data) {
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if (err) {
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console.log('Sprite load error:', filename);
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return res.status(404).send('File not found');
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} else {
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if (format == 'json') res.header('Content-type', 'application/json');
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if (format == 'png') res.header('Content-type', 'image/png');
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return res.send(data);
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}
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});
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});
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return app;
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};
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