v3: gstack-code-gen 生成

preprocessor.py

@@ -0,0 +1,18 @@
+import re
+from pathlib import Path
+
+
+class CopybookPreprocessor:
+    def __init__(self, paths=None):
+        self.paths = paths or ["./copybooks"]
+
+    def expand(self, text: str) -> str:
+        def _rep(m):
+            n = m.group(1).strip()
+            for p in self.paths:
+                for e in ("", ".cpy", ".cbl"):
+                    f = Path(p) / f"{n}{e}"
+                    if f.exists():
+                        return f"      *> COPY {n}\n{f.read_text()}\n      *> END COPY {n}"
+            return f"      *> COPY {n} NOT FOUND"
+        return re.sub(r'^       COPY\s+(\w+(?:-\w+)?)\s*\.', _rep, text, flags=re.MULTILINE)