From 95cbd78c82e38f05740f4b739c1c900add2f9c70 Mon Sep 17 00:00:00 2001
From: Jan Max Meyer <jmm@phorward.de>
Date: Fri, 16 Sep 2022 13:06:29 +0200
Subject: [PATCH] Providing viur-2to3 (#19)

* Providing viur-2to3

* Update src/viur_cli/scripts/viur-2to3.py

Co-authored-by: Sven Eberth <mail@sveneberth.de>

Co-authored-by: Sven Eberth <mail@sveneberth.de>
---
 setup.cfg                         |   1 +
 src/viur_cli/scripts/viur-2to3.py | 118 ++++++++++++++++++++++++++++++
 2 files changed, 119 insertions(+)
 create mode 100644 src/viur_cli/scripts/viur-2to3.py

diff --git a/setup.cfg b/setup.cfg
index 0526049..e3cac15 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -32,5 +32,6 @@ where = src
 [options.entry_points]
 console_scripts =
     viur = viur_cli:cli
+    viur-2to3 = viur_cli.scripts.viur-2to3:main
     flare = viur_cli.scripts.flare:main
     get-pyodide = viur_cli.scripts.get_pyodide:main
diff --git a/src/viur_cli/scripts/viur-2to3.py b/src/viur_cli/scripts/viur-2to3.py
new file mode 100644
index 0000000..6c6b579
--- /dev/null
+++ b/src/viur_cli/scripts/viur-2to3.py
@@ -0,0 +1,118 @@
+#!/usr/bin/env python3
+"""
+Naive ViUR3 project porting script with a simple search & replace mechanism using lookup table.
+"""
+
+import os, argparse, difflib
+
+# Naive lookup table. Could be done better later...
+lookup = {
+    "onItemAdded": "onAdded",
+    "onItemEdited": "onEdited",
+    "onItemDeleted": "onDeleted",
+    "addItemSuccess": "addSuccess",
+    "editItemSuccess": "editSuccess",
+    "from server import": "from viur.core import",
+    "from server.bones import": "from viur.core.bones import",
+   "getEmtpyValueFunc": "getEmptyValueFunc",
+}
+
+bones = [
+    "base",
+    "boolean",
+    "captcha",
+    "color",
+    "credential",
+    "date",
+    "email",
+    "file",
+    "key",
+    "numeric",
+    "password",
+    "randomslice",
+    "raw",
+    "record",
+    "relational",
+    "selectcountry",
+    "select",
+    "sortindex",
+    "spatial",
+    "string",
+    "text",
+    "treeleaf",
+    "treenode",
+    "user"
+]
+
+lookup.update({
+    f"{name}Bone": f"{name[0].upper()}{name[1:]}Bone" for name in bones
+})
+
+if __name__ == "__main__":
+    # Get arguments
+    ap = argparse.ArgumentParser(
+        description="ViUR2-to-ViUR3 porting tool"
+    )
+
+    ap.add_argument(
+        "project_root",
+        type=str,
+        help="ViUR project root"
+    )
+
+    ap.add_argument(
+        "-d", "--dryrun",
+        action="store_true",
+        help="Dry-run for testing, don't modify files"
+    )
+    ap.add_argument(
+        "-x", "--daredevil",
+        action="store_true",
+        help="Don't make backups of files, just replace and deal with it"
+    )
+
+    args = ap.parse_args()
+
+    # Iterate all files in current folder
+    for root, dirs, files in os.walk(args.project_root):
+        # Ignore ViUR library folders
+        if any(ignore in root for ignore in ["viur", "flare", "html5"]):
+            continue
+
+        for filename in files:
+            # Ignore anything without a .py-extension
+            ext = os.path.splitext(filename)[1].lower()[1:]
+            if ext not in ["py"]:
+                continue
+
+            filename = os.path.join(root, filename)
+
+            with open(filename, "r") as f:
+                original_content = content = f.read()
+
+            count = 0
+            for k, v in lookup.items():
+                if k in content:
+                    content = content.replace(k, v)
+                    count += 1
+
+            if count:
+                if not args.dryrun:
+                    if not args.daredevil:
+                        os.rename(filename, filename + ".bak")
+
+                    with open(filename, "w") as f:
+                        f.write(content)
+
+                    print("Modified %r" % filename)
+                else:
+                    print(
+                        "\n".join(
+                            difflib.unified_diff(
+                                original_content.splitlines(),
+                                content.splitlines(),
+                                filename,
+                                filename
+                            )
+                        )
+                    )