1 files changed, 28 insertions, 0 deletions
diff --git a/src/journal_lib/parse/preprocessing.py b/src/journal_lib/parse/preprocessing.py
new file mode 100644
index 0000000..6d4a0cf
--- /dev/null
+++ b/src/journal_lib/parse/preprocessing.py
@@ -0,0 +1,28 @@
+import re
+from pathlib import Path
+
+def preprocess_includes(filepath: Path):
+    """
+    Reads the file at 'filepath', processing any "include" directives,
+    and returns a single string containing the preprocessed file content.
+
+    This does not report circular includes, so that would become a infinite loop
+    """
+    INCLUDE_RE = re.compile(r'^\s*include\s+([^\n]+)\s*$', re.IGNORECASE)
+
+    def read_file(file_path):
+        with open(file_path, 'r') as file:
+            return file.readlines()
+
+    lines = read_file(filepath)
+    i = 0
+    while i < len(lines):
+        match = INCLUDE_RE.match(lines[i])
+        if match:
+            included_file_path = match.group(1)
+            included_lines = read_file(included_file_path)
+            lines[i:i+1] = included_lines
+        else:
+            i += 1
+
+    return ''.join(lines)