[gnome-shell/wip/fmuellner/pardon-my-french: 10/22] Output JSON and work on directories

[Florian Müllner <fmuellner src gnome org>]

commit 8641eaa5389990686fb5b0449139b264a9b32d65
Author: Alan <alan boum org>
Date:   Tue Aug 1 15:34:13 2017 +0000

    Output JSON and work on directories

 convert_cldr.py | 230 ++++++++++++++++++++++++++++++++++++++------------------
 1 file changed, 156 insertions(+), 74 deletions(-)
---
diff --git a/convert_cldr.py b/convert_cldr.py
index 8ecc213a5..7420f7cda 100755
--- a/convert_cldr.py
+++ b/convert_cldr.py
@@ -1,7 +1,8 @@
 #!/usr/bin/python3
-
+#
 # Copyright 2015  Daiki Ueno <dueno src gnome org>
 #           2016  Parag Nemade <pnemade redhat com>
+#           2017  Alan <alan boum org>
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU Lesser General Public License as
@@ -17,17 +18,36 @@
 # License along with this program; if not, see
 # <http://www.gnu.org/licenses/>.
 
-from gi.repository import Gdk
-from xml.etree.ElementTree import ElementTree, Element
+import glob
+import json
+import locale
+import logging
+import os
 import re
+import sys
+import xml.etree.ElementTree
+
+import gi
+gi.require_version('GnomeDesktop', '3.0')   # NOQA: E402
+from gi.repository import GnomeDesktop
 
 ESCAPE_PATTERN = re.compile(r'\\u\{([0-9A-Fa-f]+?)\}')
 ISO_PATTERN = re.compile(r'[A-E]([0-9]+)')
 
+LOCALE_TO_XKB_OVERRIDES = {
+    'af':    'za',
+    'en':    'us',
+    'en-GB': 'uk',
+    'es-US': 'latam',
+    'fr_CA': 'ca',
+    'hi':    'in+bolnagri',
+    'ky':    'kg',
+    'nl-BE': 'be',
+    'zu':    None
+}
+
 
 def parse_single_key(value):
-    key = Element('key')
-    uc = 0
     if hasattr(__builtins__, 'unichr'):
         def unescape(m):
             return chr(int(m.group(1), 16))
@@ -35,22 +55,55 @@ def parse_single_key(value):
         def unescape(m):
             return chr(int(m.group(1), 16))
     value = ESCAPE_PATTERN.sub(unescape, value)
-    if len(value) > 1:
-        key.set('text', value)
-    uc = ord(value[0])
-    keyval = Gdk.unicode_to_keyval(uc)
-    name = Gdk.keyval_name(keyval)
-    key.set('name', name)
-    return key
+    return value
+
+
+def parse_rows(keymap):
+    unsorted_rows = {}
+    for _map in keymap.iter('map'):
+        value = _map.get('to')
+        key = [parse_single_key(value)]
+        iso = _map.get('iso')
+        if not ISO_PATTERN.match(iso):
+            sys.stderr.write('invalid ISO key name: %s\n' % iso)
+            continue
+        if not iso[0] in unsorted_rows:
+            unsorted_rows[iso[0]] = []
+        unsorted_rows[iso[0]].append((int(iso[1:]), key))
+        # add subkeys
+        longPress = _map.get('longPress')
+        if longPress:
+            for value in longPress.split(' '):
+                subkey = parse_single_key(value)
+                key.append(subkey)
+
+    rows = []
+    for k, v in sorted(list(unsorted_rows.items()),
+                       key=lambda x: x[0],
+                       reverse=True):
+        row = []
+        for key in sorted(v, key=lambda x: x):
+            row.append(key[1])
+        rows.append(row)
 
+    return rows
 
-def convert(source, tree):
-    root = Element('layout')
+
+def convert_xml(tree):
+    root = {}
+    for xml_keyboard in tree.iter("keyboard"):
+        locale_full = xml_keyboard.get("locale")
+        locale, sep, end = locale_full.partition("-t-")
+    root["locale"] = locale
+    for xml_name in tree.iter("name"):
+        name = xml_name.get("value")
+    root["name"] = name
+    root["levels"] = []
+    # parse levels
     for index, keymap in enumerate(tree.iter('keyMap')):
-        level = Element('level')
-        rows = {}
-        root.append(level)
-        level.set('name', 'level%d' % (index+1))
+        level = {}
+        root["levels"].append(level)
+        level["level"] = index + 1
         # FIXME: heuristics here
         modifiers = keymap.get('modifiers')
         if not modifiers:
@@ -59,70 +112,99 @@ def convert(source, tree):
             mode = 'latched'
         else:
             mode = 'locked'
-        level.set('mode', mode)
-        for _map in keymap.iter('map'):
-            value = _map.get('to')
-            key = parse_single_key(value)
-            iso = _map.get('iso')
-            if not ISO_PATTERN.match(iso):
-                sys.stderr.write('invalid ISO key name: %s\n' % iso)
-                continue
-            if not iso[0] in rows:
-                rows[iso[0]] = []
-            rows[iso[0]].append((int(iso[1:]), key))
-            # add attribute to certain keys
-            name = key.get('name')
-            if name == 'space':
-                key.set('align', 'center')
-                key.set('width', '6.0')
-            if name in ('space', 'BackSpace'):
-                key.set('repeatable', 'yes')
-            # add subkeys
-            longPress = _map.get('longPress')
-            if longPress:
-                for value in longPress.split(' '):
-                    subkey = parse_single_key(value)
-                    key.append(subkey)
-        for k, v in sorted(list(rows.items()), key=lambda x: x[0], reverse=True):
-            row = Element('row')
-            for key in sorted(v, key=lambda x: x):
-                row.append(key[1])
-            level.append(row)
+        level["mode"] = mode
+        level["rows"] = parse_rows(keymap)
     return root
 
 
-def indent(elem, level=0):
-    i = "\n" + level*"  "
-    if len(elem):
-        if not elem.text or not elem.text.strip():
-            elem.text = i + "  "
-        if not elem.tail or not elem.tail.strip():
-            elem.tail = i
-        for elem in elem:
-            indent(elem, level+1)
-        if not elem.tail or not elem.tail.strip():
-            elem.tail = i
+def locale_to_xkb(locale, name):
+    if locale in sorted(LOCALE_TO_XKB_OVERRIDES.keys()):
+        xkb = LOCALE_TO_XKB_OVERRIDES[locale]
+        logging.debug("override for %s → %s",
+                      locale, xkb)
+        if xkb:
+            return xkb
+        else:
+            raise KeyError("layout %s explicitely disabled in overrides"
+                           % locale)
+    xkb_names = sorted(name_to_xkb.keys())
+    if name in xkb_names:
+        return name_to_xkb[name]
     else:
-        if level and (not elem.tail or not elem.tail.strip()):
-            elem.tail = i
+        logging.debug("name %s failed" % name)
+    for sub_name in name.split(' '):
+        if sub_name in xkb_names:
+            xkb = name_to_xkb[sub_name]
+            logging.debug("dumb mapping failed but match with locale word: "
+                          "%s (%s) → %s (%s)",
+                          locale, name, xkb, sub_name)
+            return xkb
+        else:
+            logging.debug("sub_name failed")
+    for xkb_name in xkb_names:
+        for xkb_sub_name in xkb_name.split(' '):
+            if xkb_sub_name.strip('()') == name:
+                xkb = name_to_xkb[xkb_name]
+                logging.debug("dumb mapping failed but match with xkb word: "
+                              "%s (%s) → %s (%s)",
+                              locale, name, xkb, xkb_name)
+                return xkb
+    raise KeyError("failed to find XKB mapping for %s" % locale)
+
+
+def convert_file(source_file, destination_path):
+    logging.info("Parsing %s", source_file)
+
+    itree = xml.etree.ElementTree.ElementTree()
+    itree.parse(source_file)
+
+    root = convert_xml(itree)
+
+    try:
+        xkb_name = locale_to_xkb(root["locale"], root["name"])
+    except KeyError as e:
+        logging.warn(e)
+        return False
+    destination_file = os.path.join(destination_path, xkb_name + ".json")
+
+    with open(destination_file, 'w', encoding="utf-8") as dest_fd:
+        json.dump(root, dest_fd, ensure_ascii=False, indent=2, sort_keys=True)
+
+    logging.debug("written %s", destination_file)
+
+
+def load_xkb_mappings():
+    xkb = GnomeDesktop.XkbInfo()
+    layouts = xkb.get_all_layouts()
+    name_to_xkb = {}
+
+    for layout in layouts:
+        name = xkb.get_layout_info(layout).display_name
+        name_to_xkb[name] = layout
+
+    return name_to_xkb
+
 
 if __name__ == "__main__":
-    import sys
+    if "DEBUG" in os.environ:
+        logging.basicConfig(level=logging.DEBUG)
+
+    locale.setlocale(locale.LC_ALL, "C")
+    name_to_xkb = load_xkb_mappings()
 
-    if len(sys.argv) != 2:
+    if len(sys.argv) < 2:
         print("supply a CLDR keyboard file")
         sys.exit(1)
 
-    source = sys.argv[-1]
-    itree = ElementTree()
-    itree.parse(source)
-
-    root = convert(source, itree)
-    indent(root)
+    if len(sys.argv) < 3:
+        print("supply an output directory")
+        sys.exit(1)
 
-    otree = ElementTree(root)
-    if hasattr(sys.stdout, 'buffer'):
-        out = sys.stdout.buffer
-    else:
-        out = sys.stdout
-    otree.write(out, xml_declaration=True, encoding='UTF-8')
+    source = sys.argv[1]
+    destination = sys.argv[2]
+    if os.path.isfile(source):
+        convert_file(source, destination)
+    elif os.path.isdir(source):
+        os.chdir(source)
+        for path in glob.glob("*-t-k0-android.xml"):
+            convert_file(path, destination)