1 files changed, 34 insertions, 0 deletions
diff --git a/lib9p/linux-errno.h.gen b/lib9p/linux-errno.h.gen
new file mode 100755
index 0000000..b896384
--- /dev/null
+++ b/lib9p/linux-errno.h.gen
@@ -0,0 +1,34 @@
+#!/usr/bin/env python
+
+
+def print_errnos(txtlists: list[str]) -> None:
+    print(
+        f"/* 9p/linux-errno.h - Generated by `./9p/linux-errno.h.gen {' '.join(txtlists)}`.  DO NOT EDIT!  */"
+    )
+    errnos: dict[str, tuple[int, str]] = {}
+    for txtlist in sys.argv[1:]:
+        with open(txtlist, "r") as fh:
+            for line in fh:
+                if line.startswith("#"):
+                    print(f"/* {line[1:].strip()}  */")
+                    continue
+                _num, name, desc = line.split(maxsplit=2)
+                num = int(_num)
+                desc = desc.strip()
+                errnos[name] = (num, desc)
+    print()
+    print("#ifndef _9P_LINUX_ERRNO_H_")
+    print("#define _9P_LINUX_ERRNO_H_")
+    print()
+    namelen = max(len(name) for name in errnos.keys())
+    numlen = max(len(str(num)) for (num, desc) in errnos.values())
+    for name in errnos:
+        print(f"#define LINUX_{name.ljust(namelen)}  {str(errnos[name][0]).rjust(numlen)}  /* {errnos[name][1]} */")
+    print()
+    print("#endif /* _9P_LINUX_ERRNO_H_ */")
+
+
+if __name__ == "__main__":
+    import sys
+
+    print_errnos(sys.argv[1:])