Change relative paths to absolute ones when using compile_commands.js…

…on file

Signed-off-by: caozhong <zhong.z.cao@intel.com>

include/conf/load.hpp

@@ -41,6 +41,20 @@ namespace color_coded
 
         return line;
       }
+
+      void make_absolute(std::string &line, std::string &next, const fs::path &base) {
+        static const std::regex reg_dual {
+          "\\s*(-I|-isystem|-iquote)\\s*$",
+            std::regex::optimize
+        };
+
+        std::smatch match;
+        if (std::regex_search(line, match, reg_dual)) {
+          next = fs::absolute(next.c_str(), base).string();
+        } else {
+          line = make_absolute(line, base);
+        }
+      }
     }
 
     inline args_t load_compilation_database(std::string const &file, fs::path filename)
@@ -106,6 +120,7 @@ namespace color_coded
       if(compile_commands.empty())
       { return {}; }
 
+      const auto base(fs::path{compile_commands[0].Directory});
       // Skip argv[0] which is the name of the clang executable.
       args_t commands((compile_commands[0].CommandLine.begin() + 1), compile_commands[0].CommandLine.end());
 
@@ -114,6 +129,10 @@ namespace color_coded
       commands.erase(std::remove(commands.begin(), commands.end(), filename), commands.end());
       commands.erase(std::remove(commands.begin(), commands.end(), compile_commands[0].Filename), commands.end());
 
+      for (auto i = commands.begin(); i < commands.end() -1; ++ i) {
+        detail::make_absolute(*i, *(i+1), base);
+      }
+
       return commands;
     }