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#include <mbgl/util/mapbox.hpp>
#include <mbgl/platform/log.hpp>
#include <stdexcept>
#include <vector>
#include <iostream>
namespace mbgl {
namespace util {
namespace mapbox {
const std::string protocol = "mapbox://";
const std::string baseURL = "https://api.mapbox.com/";
bool isMapboxURL(const std::string& url) {
return std::equal(protocol.begin(), protocol.end(), url.begin());
}
std::vector<std::string> getMapboxURLPathname(const std::string& url) {
std::vector<std::string> pathname;
std::size_t startIndex = protocol.length();
while (startIndex < url.length()) {
std::size_t endIndex = url.find("/", startIndex);
if (endIndex == std::string::npos) {
endIndex = url.find_first_of("?#");
}
if (endIndex == std::string::npos) {
endIndex = url.length();
}
pathname.push_back(url.substr(startIndex, endIndex - startIndex));
startIndex = endIndex + 1;
}
return pathname;
}
std::string normalizeSourceURL(const std::string& url, const std::string& accessToken) {
if (!isMapboxURL(url)) {
return url;
}
if (accessToken.empty()) {
throw std::runtime_error("You must provide a Mapbox API access token for Mapbox tile sources");
}
return baseURL + "v4/" + url.substr(protocol.length()) + ".json?access_token=" + accessToken + "&secure";
}
std::string normalizeStyleURL(const std::string& url, const std::string& accessToken) {
if (!isMapboxURL(url)) {
return url;
}
std::vector<std::string> pathname = getMapboxURLPathname(url);
if (pathname.size() < 3) {
Log::Error(Event::ParseStyle, "Invalid style URL");
return url;
}
std::string user = pathname[1];
std::string id = pathname[2];
bool isDraft = pathname.size() > 3;
return baseURL + "styles/v1/" + user + "/" + id + (isDraft ? "/draft" : "") + "?access_token=" + accessToken;
}
std::string normalizeSpriteURL(const std::string& url, const std::string& accessToken) {
if (!isMapboxURL(url)) {
return url;
}
std::vector<std::string> pathname = getMapboxURLPathname(url);
if (pathname.size() < 3) {
Log::Error(Event::ParseStyle, "Invalid sprite URL");
return url;
}
std::string user = pathname[1];
bool isDraft = pathname.size() > 3;
std::string id, extension;
if (isDraft) {
size_t index = pathname[3].find_first_of("@.");
id = pathname[2];
extension = pathname[3].substr(index);
} else {
size_t index = pathname[2].find_first_of("@.");
id = pathname[2].substr(0, index);
extension = pathname[2].substr(index);
}
return baseURL + "styles/v1/" + user + "/" + id + "/" + (isDraft ? "draft/" : "") + "sprite" + extension + "?access_token=" + accessToken;
}
std::string normalizeGlyphsURL(const std::string& url, const std::string& accessToken) {
if (!isMapboxURL(url)) {
return url;
}
std::vector<std::string> pathname = getMapboxURLPathname(url);
if (pathname.size() < 4) {
Log::Error(Event::ParseStyle, "Invalid glyph URL");
return url;
}
std::string user = pathname[1];
std::string fontstack = pathname[2];
std::string range = pathname[3];
return baseURL + "fonts/v1/" + user + "/" + fontstack + "/" + range + "?access_token=" + accessToken;
}
std::string normalizeTileURL(const std::string& url, const std::string& accessToken) {
if (!isMapboxURL(url)) {
return url;
}
return baseURL + "v4/" + url.substr(sizeof("mapbox://tiles/") - 1) + "?access_token=" + accessToken;
}
std::string canonicalizeTileURL(const std::string& url, SourceType type, uint16_t tileSize) {
auto tilesetStartIdx = url.find("/v4/");
if (tilesetStartIdx == std::string::npos) {
return url;
}
tilesetStartIdx += sizeof("/v4/") - 1;
auto tilesetEndIdx = url.find("/", tilesetStartIdx);
if (tilesetEndIdx == std::string::npos) {
return url;
}
auto queryIdx = url.rfind("?");
if (queryIdx == std::string::npos) {
queryIdx = url.length();
}
auto basenameIdx = url.rfind("/", queryIdx);
if (basenameIdx == std::string::npos || basenameIdx == queryIdx - 1) {
basenameIdx = url.length();
} else {
basenameIdx += 1;
}
auto extensionIdx = url.find(".", basenameIdx);
if (extensionIdx == std::string::npos || extensionIdx == queryIdx - 1) {
return url;
}
auto tileset = url.substr(tilesetStartIdx, tilesetEndIdx - tilesetStartIdx);
auto extension = url.substr(extensionIdx + 1, queryIdx - extensionIdx - 1);
#if !defined(__ANDROID__) && !defined(__APPLE__)
// Replace PNG with WebP.
if (extension == "png") {
extension = "webp";
}
#endif // !defined(__ANDROID__) && !defined(__APPLE__)
std::string result = "mapbox://tiles/" + tileset + "/{z}/{x}/{y}";
if (type == SourceType::Raster) {
result += tileSize == 512 ? "@2x" : "{ratio}";
}
result += "." + extension;
return result;
}
} // end namespace mapbox
} // end namespace util
} // end namespace mbgl
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