Recursive build

1 files changed, 64 insertions, 0 deletions

diff --git a/MakefileReader.cpp b/MakefileReader.cpp
new file mode 100644
index 0000000..ebcc0a8
--- /dev/null
+++ b/MakefileReader.cpp
@@ -0,0 +1,64 @@
+#include "MakefileReader.h"
+
+#include <boost/property_tree/xml_parser.hpp>
+
+#include "file.h"
+
+namespace pt = boost::property_tree;
+namespace fs = std::filesystem;
+
+namespace {
+ // the elements with this name are considered paths, where relative prefixes will be added if necessary
+ std::vector<std::string> path_elements{"name", "source", "test"};
+
+ // add path to respective elements in tree, recursively
+ void adjust_path(pt::ptree::value_type& element, const fs::path& path) {
+  // add path prefix if path element
+   if (std::find(path_elements.begin(), path_elements.end(), element.first) != path_elements.end()) {
+    std::string content{element.second.data()};
+    element.second.data() = simplified_path(path / fs::path{content}).string();
+   }
+
+  for (auto &i: element.second) {
+   // recursively run
+   adjust_path(i, path);
+  }
+ }
+
+ void join(pt::ptree& tree, const pt::ptree& makefile_tree, const fs::path& path) {
+  if (tree.empty()) {
+   tree = makefile_tree; // including top level single "ymake" element
+  } else {
+   // copy all elements inside single "ymake"
+   pt::ptree& target{tree.get_child("ymake")};
+   const pt::ptree& source{makefile_tree.get_child("ymake")};
+   for (const auto& i: source) {
+    auto it {target.push_back(i)};
+    auto &element{*it};
+    adjust_path(element, path);
+   }
+  }
+ }
+}
+
+MakefileReader::MakefileReader()
+{
+}
+
+pt::ptree MakefileReader::read(const fs::path& path) const
+{
+ pt::ptree ptree;
+
+ for (const fs::directory_entry& dir_entry: fs::recursive_directory_iterator(path)) {
+  pt::ptree makefile_tree;
+  fs::path path{dir_entry.path()};
+
+  if (dir_entry.is_regular_file() && path.filename() == YMakefile) {
+   pt::read_xml(path, makefile_tree, pt::xml_parser::no_comments | pt::xml_parser::trim_whitespace);
+
+   join(ptree, makefile_tree, simplified_path(path.parent_path()));
+  }
+ }
+
+ return ptree;
+}