Allow custom path for doxygen

obidog/wrappers/doxygen_wrapper.py

@@ -4,8 +4,28 @@
 import tempfile
 
 from obidog.config import SOURCE_DIRECTORIES
+from obidog.logger import log
 
 
+DOXYGEN_PATH = os.environ.get("DOXYGEN_PATH", "doxygen")
+
+def _check_doxygen():
+    try:
+        with subprocess.Popen(
+            [DOXYGEN_PATH, "--version"], stdout=subprocess.PIPE
+        ) as doxygen_exec:
+            version = doxygen_exec.stdout.read().decode("utf-8").strip()
+            try:
+                version = version.split()[0].split(".")
+                if int(version[0]) >= 1 and int(version[1]) >= 8 and int(version[2]) >= 18:
+                    return True
+                else:
+                    return False
+            except:
+                return False
+    except FileNotFoundError as e:
+        return False
+
 def build_doxygen_documentation(source_path):
     path = tempfile.mkdtemp()
     src_directories = [
@@ -19,6 +39,10 @@ def build_doxygen_documentation(source_path):
                     "{{input_directories}}", (" \\\n" + " " * 25).join(src_directories)
                 )
             )
-    with open(os.path.join(path, "out.log"), "w") as log:
-        subprocess.run(["doxygen", "Doxyfile"], cwd=path, stdout=log, stderr=log)
+    with open(os.path.join(path, "out.log"), "w") as logger:
+        subprocess.run([DOXYGEN_PATH, "Doxyfile"], cwd=path, stdout=logger, stderr=logger)
     return path
+
+
+if not _check_doxygen():
+    raise RuntimeError(f"Doxygen (>= 1.8.18) not found")