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#include <mbgl/util/mapbox.hpp>
#include <mbgl/util/constants.hpp>
#include <mbgl/util/logging.hpp>
#include <mbgl/util/url.hpp>
#include <mbgl/util/tileset.hpp>
#include <stdexcept>
#include <vector>
#include <iostream>
#include <cstring>
namespace {
const char* protocol = "mapbox://";
const std::size_t protocolLength = 9;
} // namespace
namespace mbgl {
namespace util {
namespace mapbox {
bool isMapboxURL(const std::string& url) {
return url.compare(0, protocolLength, protocol) == 0;
}
static bool equals(const std::string& str, const URL::Segment& segment, const char* ref) {
return str.compare(segment.first, segment.second, ref) == 0;
}
std::string normalizeSourceURL(const std::string& baseURL,
const std::string& str,
const std::string& accessToken) {
if (!isMapboxURL(str)) {
return str;
}
if (accessToken.empty()) {
throw std::runtime_error(
"You must provide a Mapbox API access token for Mapbox tile sources");
}
const URL url(str);
const auto tpl = baseURL + "/v4/{domain}.json?access_token=" + accessToken + "&secure";
return transformURL(tpl, str, url);
}
std::string normalizeStyleURL(const std::string& baseURL,
const std::string& str,
const std::string& accessToken) {
if (!isMapboxURL(str)) {
return str;
}
const URL url(str);
if (!equals(str, url.domain, "styles")) {
Log::Error(Event::ParseStyle, "Invalid style URL");
return str;
}
const auto tpl = baseURL + "/styles/v1{path}?access_token=" + accessToken;
return transformURL(tpl, str, url);
}
std::string normalizeSpriteURL(const std::string& baseURL,
const std::string& str,
const std::string& accessToken) {
if (!isMapboxURL(str)) {
return str;
}
const URL url(str);
if (!equals(str, url.domain, "sprites")) {
Log::Error(Event::ParseStyle, "Invalid sprite URL");
return str;
}
const auto tpl =
baseURL + "/styles/v1{directory}{filename}/sprite{extension}?access_token=" + accessToken;
return transformURL(tpl, str, url);
}
std::string normalizeGlyphsURL(const std::string& baseURL,
const std::string& str,
const std::string& accessToken) {
if (!isMapboxURL(str)) {
return str;
}
const URL url(str);
if (!equals(str, url.domain, "fonts")) {
Log::Error(Event::ParseStyle, "Invalid glyph URL");
return str;
}
const auto tpl = baseURL + "/fonts/v1{path}?access_token=" + accessToken;
return transformURL(tpl, str, url);
}
std::string normalizeTileURL(const std::string& baseURL,
const std::string& str,
const std::string& accessToken) {
if (!isMapboxURL(str)) {
return str;
}
const URL url(str);
if (!equals(str, url.domain, "tiles")) {
Log::Error(Event::ParseStyle, "Invalid tile URL");
return str;
}
const auto tpl = baseURL + "/v4{path}?access_token=" + accessToken;
return transformURL(tpl, str, url);
}
std::string
canonicalizeTileURL(const std::string& str, const style::SourceType type, const uint16_t tileSize) {
const char* version = "/v4/";
const size_t versionLen = strlen(version);
const URL url(str);
const Path path(str, url.path.first, url.path.second);
// Make sure that we are dealing with a valid Mapbox tile URL.
// Has to be /v4/, with a valid filename + extension
if (str.compare(url.path.first, versionLen, version) != 0 || path.filename.second == 0 ||
path.extension.second <= 1) {
// Not a proper Mapbox tile URL.
return str;
}
// Reassemble the canonical URL from the parts we've parsed before.
std::string result = "mapbox://tiles/";
result.append(str, path.directory.first + versionLen, path.directory.second - versionLen);
result.append(str, path.filename.first, path.filename.second);
if (type == style::SourceType::Raster) {
result += tileSize == util::tileSize ? "@2x" : "{ratio}";
}
#if !defined(__ANDROID__) && !defined(__APPLE__) && !defined(QT_IMAGE_DECODERS)
const bool forceWebP = str.compare(path.extension.first, path.extension.second, ".png") == 0;
#else
const bool forceWebP = false;
#endif // !defined(__ANDROID__) && !defined(__APPLE__) && !defined(QT_IMAGE_DECODERS)
// Replace PNG with WebP if necessary.
if (forceWebP) {
result += ".webp";
} else {
result.append(str, path.extension.first, path.extension.second);
}
// Append the query string, minus the access token parameter.
if (url.query.second > 1) {
auto idx = url.query.first;
bool hasQuery = false;
while (idx != std::string::npos) {
idx++; // skip & or ?
auto ampersandIdx = str.find('&', idx);
const char* accessToken = "access_token=";
if (str.compare(idx, strlen(accessToken), accessToken) != 0) {
result.append(1, hasQuery ? '&' : '?');
result.append(str, idx, ampersandIdx != std::string::npos ? ampersandIdx - idx
: std::string::npos);
hasQuery = true;
}
idx = ampersandIdx;
}
}
return result;
}
void canonicalizeTileset(Tileset& tileset, const std::string& sourceURL, style::SourceType type, uint16_t tileSize) {
// TODO: Remove this hack by delivering proper URLs in the TileJSON to begin with.
if (isMapboxURL(sourceURL)) {
for (auto& url : tileset.tiles) {
url = canonicalizeTileURL(url, type, tileSize);
}
}
}
const uint64_t DEFAULT_OFFLINE_TILE_COUNT_LIMIT = 6000;
} // end namespace mapbox
} // end namespace util
} // end namespace mbgl
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