1 files changed, 82 insertions, 0 deletions
diff --git a/src/mbgl/storage/resource.cpp b/src/mbgl/storage/resource.cpp
new file mode 100644
index 0000000000..9cdedb59eb
--- /dev/null
+++ b/src/mbgl/storage/resource.cpp
@@ -0,0 +1,82 @@
+#include <mbgl/storage/resource.hpp>
+#include <mbgl/util/string.hpp>
+#include <mbgl/util/token.hpp>
+#include <mbgl/util/url.hpp>
+
+namespace mbgl {
+
+Resource Resource::style(const std::string& url) {
+    return Resource {
+        Resource::Kind::Style,
+        url
+    };
+}
+
+Resource Resource::source(const std::string& url) {
+    return Resource {
+        Resource::Kind::Source,
+        url
+    };
+}
+
+Resource Resource::spriteImage(const std::string& base, float pixelRatio) {
+    return Resource {
+        Resource::Kind::SpriteImage,
+        base + (pixelRatio > 1 ? "@2x" : "") + ".png"
+    };
+}
+
+Resource Resource::spriteJSON(const std::string& base, float pixelRatio) {
+    return Resource {
+        Resource::Kind::SpriteJSON,
+        base + (pixelRatio > 1 ? "@2x" : "") + ".json"
+    };
+}
+
+Resource Resource::glyphs(const std::string& urlTemplate, const std::string& fontStack, const std::pair<uint16_t, uint16_t>& glyphRange) {
+    return Resource {
+        Resource::Kind::Glyphs,
+        util::replaceTokens(urlTemplate, [&](const std::string& token) {
+            if (token == "fontstack") {
+                return util::percentEncode(fontStack);
+            } else if (token == "range") {
+                return util::toString(glyphRange.first) + "-" + util::toString(glyphRange.second);
+            } else {
+                return std::string();
+            }
+        })
+    };
+}
+
+Resource Resource::tile(const std::string& urlTemplate, float pixelRatio, int32_t x, int32_t y, int8_t z) {
+    return Resource {
+        Resource::Kind::Tile,
+        util::replaceTokens(urlTemplate, [&](const std::string& token) {
+            if (token == "z") {
+                return util::toString(z);
+            } else if (token == "x") {
+                return util::toString(x);
+            } else if (token == "y") {
+                return util::toString(y);
+            } else if (token == "prefix") {
+                std::string prefix{ 2 };
+                prefix[0] = "0123456789abcdef"[x % 16];
+                prefix[1] = "0123456789abcdef"[y % 16];
+                return prefix;
+            } else if (token == "ratio") {
+                return std::string(pixelRatio > 1.0 ? "@2x" : "");
+            } else {
+                return std::string();
+            }
+        }),
+        Resource::TileData {
+            urlTemplate,
+            pixelRatio,
+            x,
+            y,
+            z
+        }
+    };
+}
+
+}