Swift: split Xcode autobuild

swift/xcode-autobuilder/XcodeWorkspaceParser.cpp

@@ -0,0 +1,62 @@
+#include <libxml/tree.h>
+#include <libxml/parser.h>
+#include <iostream>
+#include "XcodeWorkspaceParser.h"
+
+/*
+Extracts FileRef locations from an XML of the following form:
+
+ <?xml version="1.0" encoding="UTF-8"?>
+ <Workspace version = "1.0">
+  <FileRef location = "group:PathToProject.xcodeproj">
+  </FileRef>
+ </Workspace>
+
+ */
+std::vector<fs::path> readProjectsFromWorkspace(const std::string& workspace) {
+  fs::path workspacePath(workspace);
+  auto workspaceData = workspacePath / "contents.xcworkspacedata";
+  if (!fs::exists(workspaceData)) {
+    std::cerr << "[xcode autobuilder] Cannot read workspace: file does not exist '" << workspaceData
+              << "\n";
+    return {};
+  }
+
+  auto xmlDoc = xmlParseFile(workspaceData.c_str());
+  if (!xmlDoc) {
+    std::cerr << "[xcode autobuilder] Cannot parse workspace file '" << workspaceData << "\n";
+    return {};
+  }
+  auto root = xmlDocGetRootElement(xmlDoc);
+  auto first = xmlFirstElementChild(root);
+  auto last = xmlLastElementChild(root);
+  std::vector<xmlNodePtr> children;
+  for (; first != last; first = xmlNextElementSibling(first)) {
+    children.push_back(first);
+  }
+  children.push_back(first);
+  std::vector<std::string> locations;
+  for (auto child : children) {
+    if (child) {
+      auto prop = xmlGetProp(child, xmlCharStrdup("location"));
+      if (prop) {
+        locations.emplace_back((char*)prop);
+      }
+    }
+  }
+  xmlFreeDoc(xmlDoc);
+
+  std::vector<fs::path> projects;
+  for (auto& location : locations) {
+    auto colon = location.find(':');
+    if (colon != std::string::npos) {
+      auto project = location.substr(colon + 1);
+      if (!project.empty()) {
+        auto fullPath = workspacePath.parent_path() / project;
+        projects.push_back(fullPath);
+      }
+    }
+  }
+
+  return projects;
+}