698c527e94
- styles at /style/{id}/style.json
- rendered tiles at /style/{id}/{z}/{x}/{y}.{format}
- TileJSONs at /style/{id}.json
121 lines
3.8 KiB
JavaScript
121 lines
3.8 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.resolve(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 && url.lastIndexOf('mbtiles:', 0) === 0) {
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var mbtilesFile = url.substring('mbtiles://'.length);
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var fromData = mbtilesFile[0] == '{' &&
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mbtilesFile[mbtilesFile.length - 1] == '}';
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if (fromData) {
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mbtilesFile = mbtilesFile.substr(1, mbtilesFile.length - 2);
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var mapsTo = (params.mapping || {})[mbtilesFile];
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if (mapsTo) {
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mbtilesFile = mapsTo;
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}
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}
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var identifier = reportTiles(mbtilesFile, fromData);
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source.url = 'local://data/' + identifier + '.json';
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}
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});
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styleJSON.layers.forEach(function(obj) {
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if (obj['type'] == 'symbol') {
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var fonts = (obj['layout'] || {})['text-font'];
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if (fonts && fonts.length) {
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fonts.forEach(reportFont);
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} else {
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reportFont('Open Sans Regular');
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reportFont('Arial Unicode MS Regular');
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}
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}
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});
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var spritePath;
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var httpTester = /^(http(s)?:)?\/\//;
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if (styleJSON.sprite && !httpTester.test(styleJSON.sprite)) {
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spritePath = path.join(options.paths.sprites,
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styleJSON.sprite
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.replace('{style}', path.basename(styleFile, '.json'))
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.replace('{styleJsonFolder}', path.relative(options.paths.sprites, path.dirname(styleFile)))
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);
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styleJSON.sprite = 'local://styles/' + id + '/sprite';
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}
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if (styleJSON.glyphs && !httpTester.test(styleJSON.glyphs)) {
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styleJSON.glyphs = 'local://fonts/{fontstack}/{range}.pbf';
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}
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repo[id] = styleJSON;
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app.get('/' + id + '/style.json', function(req, res, next) {
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var fixUrl = function(url, opt_nokey, opt_nostyle) {
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if (!url || (typeof url !== 'string') || url.indexOf('local://') !== 0) {
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return url;
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}
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var queryParams = [];
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if (!opt_nostyle && global.addStyleParam) {
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queryParams.push('style=' + id);
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}
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if (!opt_nokey && req.query.key) {
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queryParams.unshift('key=' + req.query.key);
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}
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var query = '';
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if (queryParams.length) {
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query = '?' + queryParams.join('&');
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}
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return url.replace(
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'local://', req.protocol + '://' + req.headers.host + '/') + query;
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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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// mapbox-gl-js viewer cannot handle sprite urls with query
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if (styleJSON_.sprite) {
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styleJSON_.sprite = fixUrl(styleJSON_.sprite, true, true);
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}
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if (styleJSON_.glyphs) {
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styleJSON_.glyphs = fixUrl(styleJSON_.glyphs, false, true);
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}
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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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if (!spritePath) {
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return res.status(404).send('File not found');
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}
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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 Promise.resolve(app);
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};
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