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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 normalizeRasterTileURL(const std::string& url) {
std::string::size_type queryIdx = url.rfind("?");
// Trim off the right end but never touch anything before the extension dot.
std::string urlSansParams((queryIdx == std::string::npos) ? url : url.substr(0, queryIdx));
while (!urlSansParams.empty() && isdigit(urlSansParams.back())) {
urlSansParams.pop_back();
}
std::string::size_type basenameIdx = url.rfind("/", queryIdx);
std::string::size_type extensionIdx = url.rfind(".", queryIdx);
if (basenameIdx == std::string::npos || extensionIdx == std::string::npos ||
basenameIdx > extensionIdx) {
// No file extension: probably not a file name we can tack a ratio onto.
return url;
}
std::string normalizedURL(url);
#if !defined(__ANDROID__) && !defined(__APPLE__)
// Replace PNG with WebP.
if (normalizedURL.compare(extensionIdx + 1, 3, "png") == 0) {
normalizedURL.replace(extensionIdx + 1, 3, "webp");
}
#endif // !defined(__ANDROID__) && !defined(__APPLE__)
normalizedURL.insert(extensionIdx, "{ratio}");
return normalizedURL;
}
std::string removeAccessTokenFromURL(const std::string &url) {
const size_t token_start = url.find("access_token=");
// Ensure that token exists, isn't at the front and is preceded by either & or ?.
if (token_start == std::string::npos || token_start == 0 || !(url[token_start - 1] == '&' || url[token_start - 1] == '?')) {
return url;
}
const size_t token_end = url.find_first_of('&', token_start);
if (token_end == std::string::npos) {
// The token is the last query argument. We slice away the "&access_token=..." part
return url.substr(0, token_start - 1);
} else {
// We slice away the "access_token=...&" part.
return url.substr(0, token_start) + url.substr(token_end + 1);
}
}
namespace {
std::string convertMapboxDomainsToProtocol(const std::string &url) {
const size_t protocol_separator = url.find("://");
if (protocol_separator == std::string::npos) {
return url;
}
const std::string protocol = url.substr(0, protocol_separator);
if (!(protocol == "http" || protocol == "https")) {
return url;
}
const size_t domain_begin = protocol_separator + 3;
const size_t path_separator = url.find("/", domain_begin);
if (path_separator == std::string::npos) {
return url;
}
const std::string domain = url.substr(domain_begin, path_separator - domain_begin);
if (domain == "api.mapbox.com" || domain.find(".tiles.mapbox.com") != std::string::npos) {
return std::string{ "mapbox://" } + url.substr(path_separator + 1);
} else {
return url;
}
}
} // end namespace
std::string canonicalURL(const std::string &url) {
return removeAccessTokenFromURL(convertMapboxDomainsToProtocol(url));
}
} // end namespace mapbox
} // end namespace util
} // end namespace mbgl
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