From bc67268d823c5d29d6d2fd9922513626edffd188 Mon Sep 17 00:00:00 2001
From: Arthur Milchior <Arthur@Milchior.fr>
Date: Mon, 2 Mar 2020 01:09:52 +0100
Subject: [PATCH] config_unprettify_json

---
 qt/aqt/addons.py         |  1 +
 qt/aqt/gui_hooks.py      | 29 +++++++++++++++++++++++++++++
 qt/tools/genhooks_gui.py |  8 ++++++++
 3 files changed, 38 insertions(+)

diff --git a/qt/aqt/addons.py b/qt/aqt/addons.py
index e8c0514cd..ecd7c56dd 100644
--- a/qt/aqt/addons.py
+++ b/qt/aqt/addons.py
@@ -1301,6 +1301,7 @@ class ConfigEditor(QDialog):
 
     def accept(self):
         txt = self.form.editor.toPlainText()
+        txt = gui_hooks.addon_config_editor_will_save_json(txt)
         try:
             new_conf = json.loads(txt)
         except Exception as e:
diff --git a/qt/aqt/gui_hooks.py b/qt/aqt/gui_hooks.py
index b93e04e75..fded1c1c8 100644
--- a/qt/aqt/gui_hooks.py
+++ b/qt/aqt/gui_hooks.py
@@ -106,6 +106,35 @@ class _AddonConfigEditorWillDisplayJsonFilter:
 addon_config_editor_will_display_json = _AddonConfigEditorWillDisplayJsonFilter()
 
 
+class _AddonConfigEditorWillSaveJsonFilter:
+    """Allows changing the text of the json configuration that was
+        received from the user before actually reading it. For
+        example, you can replace new line in strings by some "\n"."""
+
+    _hooks: List[Callable[[str], str]] = []
+
+    def append(self, cb: Callable[[str], str]) -> None:
+        """(text: str)"""
+        self._hooks.append(cb)
+
+    def remove(self, cb: Callable[[str], str]) -> None:
+        if cb in self._hooks:
+            self._hooks.remove(cb)
+
+    def __call__(self, text: str) -> str:
+        for filter in self._hooks:
+            try:
+                text = filter(text)
+            except:
+                # if the hook fails, remove it
+                self._hooks.remove(filter)
+                raise
+        return text
+
+
+addon_config_editor_will_save_json = _AddonConfigEditorWillSaveJsonFilter()
+
+
 class _AvPlayerDidBeginPlayingHook:
     _hooks: List[Callable[["aqt.sound.Player", "anki.sound.AVTag"], None]] = []
 
diff --git a/qt/tools/genhooks_gui.py b/qt/tools/genhooks_gui.py
index a2a1e685c..1147c0653 100644
--- a/qt/tools/genhooks_gui.py
+++ b/qt/tools/genhooks_gui.py
@@ -464,6 +464,14 @@ def emptyNewCard():
         while reading the file and let the user uses real new line in
         string instead of its encoding.""",
     ),
+    Hook(
+        name="addon_config_editor_will_save_json",
+        args=["text: str"],
+        return_type="str",
+        doc="""Allows changing the text of the json configuration that was
+        received from the user before actually reading it. For
+        example, you can replace new line in strings by some "\\\\n".""",
+    ),
     # Other
     ###################
     Hook(