Add UI layout XML automation

tools/pano_cli/main.cpp

@@ -2,6 +2,7 @@
 #include "document/document.h"
 #include "foundation/parse.h"
 #include "foundation/result.h"
+#include "ui_core/layout_xml.h"
 
 #include <cstdint>
 #include <fstream>
@@ -23,6 +24,10 @@ struct InspectImageArgs {
     std::string path;
 };
 
+struct ParseLayoutArgs {
+    std::string path;
+};
+
 void print_error(std::string_view command, std::string_view message)
 {
     std::cout << "{\"ok\":false,\"command\":\"" << command
@@ -35,6 +40,7 @@ void print_help()
         << "pano_cli commands:\n"
         << "  create-document --width N --height N [--layers N]\n"
         << "  inspect-image --path FILE\n"
+        << "  parse-layout --path FILE\n"
         << "  --help\n";
 }
 
@@ -160,6 +166,60 @@ int inspect_image(int argc, char** argv)
     return 0;
 }
 
+pp::foundation::Status parse_layout_args(int argc, char** argv, ParseLayoutArgs& args)
+{
+    for (int i = 2; i < argc; ++i) {
+        const std::string_view key(argv[i]);
+        if (key == "--path") {
+            if (i + 1 >= argc) {
+                return pp::foundation::Status::invalid_argument("missing value for option");
+            }
+
+            args.path = argv[++i];
+        } else {
+            return pp::foundation::Status::invalid_argument("unknown option");
+        }
+    }
+
+    if (args.path.empty()) {
+        return pp::foundation::Status::invalid_argument("path must not be empty");
+    }
+
+    return pp::foundation::Status::success();
+}
+
+int parse_layout(int argc, char** argv)
+{
+    ParseLayoutArgs args;
+    const auto status = parse_layout_args(argc, argv, args);
+    if (!status.ok()) {
+        print_error("parse-layout", status.message);
+        return 2;
+    }
+
+    std::ifstream stream(args.path, std::ios::binary);
+    if (!stream) {
+        print_error("parse-layout", "layout file could not be opened");
+        return 2;
+    }
+
+    const std::string xml {
+        std::istreambuf_iterator<char>(stream),
+        std::istreambuf_iterator<char>()
+    };
+    const auto summary = pp::ui::parse_layout_xml(xml);
+    if (!summary) {
+        print_error("parse-layout", summary.status().message);
+        return 2;
+    }
+
+    std::cout << "{\"ok\":true,\"command\":\"parse-layout\""
+              << ",\"nodes\":" << summary.value().node_count
+              << ",\"lengthAttributes\":" << summary.value().length_attribute_count
+              << "}\n";
+    return 0;
+}
+
 }
 
 int main(int argc, char** argv)
@@ -183,6 +243,10 @@ int main(int argc, char** argv)
         return inspect_image(argc, argv);
     }
 
+    if (command == "parse-layout") {
+        return parse_layout(argc, argv);
+    }
+
     print_error(command, "unknown command");
     return 2;
 }