1 files changed, 139 insertions, 0 deletions
diff --git a/ishtar_common/jinja_filters.py b/ishtar_common/jinja_filters.py
new file mode 100644
index 000000000..0bc81c47f
--- /dev/null
+++ b/ishtar_common/jinja_filters.py
@@ -0,0 +1,139 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+# Copyright (C) 2025 Étienne Loks  <etienne.loks at iggdrasil dot net>
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# See the file COPYING for details.
+
+
+from datetime import datetime
+from jinja2.filters import environmentfilter
+import locale
+from num2words import num2words
+import re
+
+from django.conf import settings
+
+
+def set_locale():
+    language_code = settings.LANGUAGE_CODE.split("-")
+    language_code = language_code[0] + "_" + language_code[1].upper()
+    for language_suffix in (".utf8", ""):
+        try:
+            locale.setlocale(locale.LC_TIME, language_code + language_suffix)
+            break
+        except locale.Error:
+            pass
+
+
+@environmentfilter
+def float_format(*args):
+    """
+    10350.5 -> 10 350,5
+    5 -> 5
+    5.449999 -> 5,45
+    """
+    value = args[0] if len(args) == 1 else args[1]  # jinja simple filter
+    if value is None or value == "":
+        return ""
+    try:
+        value = float(value)
+    except ValueError:
+        return ""
+    locale.setlocale(locale.LC_ALL, "fr_FR.UTF-8")
+    if int(value) != value:
+        value = float(f"{value:.2f}")
+    return f"{value:n}"
+
+
+@environmentfilter
+def euro_format(*args):
+    """
+    15000 -> 15 000,00 €
+    5 -> 5,00 €
+    """
+    value = args[0] if len(args) == 1 else args[1]  # jinja simple filter
+    value = float_format(value)
+    if not value:
+        return ""
+    parts = value.split(",")
+    if len(parts) < 2:
+        return value + ",00 €"
+    elif len(parts[1]) == 1:
+        return value + "0 €"
+    return value + " €"
+
+
+@environmentfilter
+def number_to_words(*args):
+    value = args[0] if len(args) == 1 else args[1]  # jinja simple filter
+    if value is None or value == "":
+        return ""
+    try:
+        value = float(value)
+    except ValueError:
+        return ""
+    return num2words(value, lang=settings.LANGUAGE_CODE.split("-")[0])
+
+
+@environmentfilter
+def replace_line_breaks(*args):
+    value = args[0] if len(args) == 1 else args[1]  # jinja simple filter
+    return (value or "").replace("\r\n", "\n")
+
+
+@environmentfilter
+def capfirst_filter(*args):
+    value = args[0] if len(args) == 1 else args[1]  # jinja simple filter
+    return value[0].upper() + value[1:] if value else value
+
+
+@environmentfilter
+def lowerfirst_filter(*args):
+    value = args[0] if len(args) == 1 else args[1]  # jinja simple filter
+    return value[0].lower() + value[1:] if value else value
+
+
+RE_CAP = re.compile(r"[^-' ]+")
+SEP = ("un", "une", "le", "la", "les", "lez", "d", "l", "de", "des", "du", "sur",
+       "sous", "en")
+
+
+@environmentfilter
+def capitalize_filter(*args):
+    value = args[0] if len(args) == 1 else args[1]  # jinja simple filter
+    if not value:
+        return ""
+    value = value.lower()
+    res = ""
+    for m in RE_CAP.finditer(value):
+        start = m.start()
+        if start:
+            res += value[start - 1]
+        v = m.group()
+        if v not in SEP:
+            v = v[0].upper() + v[1:]
+        res += v
+    return res
+
+
+@environmentfilter
+def human_date_filter(*args):
+    value = args[0] if len(args) == 1 else args[1]  # jinja simple filter
+    try:
+        value = datetime.strptime(value, "%Y-%m-%d")
+    except (ValueError, TypeError) as __:
+        return ""
+    set_locale()
+    return value.strftime(settings.DATE_FORMAT)