Add support for all languages supported by Portfolio Performance

This commit adds portfolio performance as a submodule, allowing to access all i18n files available in portfolio performance.

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "resources/portfolio"]
+	path = resources/portfolio
+	url = https://github.com/portfolio-performance/portfolio.git

README.md

@@ -16,6 +16,9 @@ Detailed examples of how the input looks like, and how the generated output look
 ## Comments
 - Project is a Work-in-Progress (WIP)
 
+## Supported Portfolio Performance Languages
+The list of supported languages can be found by checking which `messages_$LANG.properties` files exist here: https://github.com/portfolio-performance/portfolio/tree/master/name.abuchen.portfolio/src/name/abuchen/portfolio
+
 ## Step-by-step
 1. Export all `ledger` data from kraken
     1. On the kraken website, choose `History` in the top menu, then `Export`
@@ -25,12 +28,13 @@ Detailed examples of how the input looks like, and how the generated output look
 2. Export all history crypto rates from Portfolio Performance (PP)
     1. In PP, choose `File` - `Export` - `CSV...`
     2. Scroll to the bottom and choose `Securities` - `All historic rates` and choose storage location
-3. Run `cli.py` with the following parameters (see `cli.py` for help)
+3. Run `git submodule init` to download the code of Portfolio Performance (necessary for translation files). The list of supported languages can be found by checking which `messages_$LANG.properties` files exist here: https://github.com/portfolio-performance/portfolio/tree/master/name.abuchen.portfolio/src/name/abuchen/portfolio
+4. Run `cli.py` with the following parameters (see `cli.py` for help)
     - `PP_RATES_FILE` historical rates file exported from PP (required)
     - `KRAKEN_CSV_FILE` kraken ledger export (required)
     - optional parameters (see section "Command Line Arguments")
         - `-cm` can be used to specify mapping between PP Symbol and Kraken crypto currency abbreviation if they differ
-4. Import the generated CSV files in Portfolio Performance
+5. Import the generated CSV files in Portfolio Performance
     - Import `transactions_account.csv` as account data (it includes deposits and withdrawals and costs for transfers)
     - Import `transactions_normal_depot.csv` as transaction data (it includes buying and seeling cryptocurrencies)
     - Import `transactions_special_depot.csv` as transaction data and **check the box to transform them to transfers instead of buys**

src/i18n.py

@@ -0,0 +1,96 @@
+import os
+from pathlib import Path
+
+class I18n:
+
+    CSV_DEPOT_COLUMNS = [
+        'CSVColumn_Date',
+        'CSVColumn_Time',
+        'CSVColumn_Type',
+        'LabelSecurity',
+        'CSVColumn_Shares',
+        'CSVColumn_Quote',
+        'ColumnAmount',
+        'CSVColumn_Fees',
+        'CSVColumn_Taxes',
+        'ColumnNetValue',
+        'CSVColumn_AccountName',
+        'CSVColumn_AccountName2nd',
+        'CSVColumn_Note',
+        'ColumnSource'
+    ]
+
+    CSV_ACCOUNT_COLUMNS = [
+        'CSVColumn_Date',
+        'CSVColumn_Time',
+        'CSVColumn_Type',
+        'ColumnAmount',
+        'Balance',
+        'ColumnSecurity',
+        'CSVColumn_Shares',
+        'ColumnPerShare',
+        'CSVColumn_AccountName2nd',
+        'CSVColumn_Note',
+        'ColumnSource'
+    ]
+
+    def __init__(self, language):
+        self._res_dir = self._determine_resource_dir()
+        print(f"Loading translations from: {self._res_dir}")
+
+        self._constants = self._load_language(language)
+
+        self._constants['DEPOT_COLUMNS'] = self._translate_array(self.CSV_DEPOT_COLUMNS)
+        self._constants['ACCOUNT_COLUMNS'] = self._translate_array(self.CSV_ACCOUNT_COLUMNS)
+
+    def _determine_resource_dir(self):
+        proj_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+        return proj_dir / Path("resources/portfolio")
+
+    def get(self, key):
+        if key in self._constants:
+            return self._constants[key]
+        else:
+            print(f"Error: Could not find key: {key}")
+            return self._constants.get(key, key)
+
+    def _load_language(self, language):
+        result = {}
+
+        if language == "en":
+            language = ""
+        else:
+            language = f"_{language}"
+
+        files = [
+            Path(f"name.abuchen.portfolio/src/name/abuchen/portfolio/model/labels{language}.properties"),
+            Path(f"name.abuchen.portfolio/src/name/abuchen/portfolio/messages{language}.properties"),
+            Path(f"name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/messages{language}.properties"),
+        ]
+        for file in files:
+            full_file_name = Path(self._res_dir) / file
+            result.update(self._load_from_file(full_file_name))
+
+        return result
+
+    def _load_from_file(self, filename):
+        result = {}
+        try:
+            with open(filename, encoding='utf-8') as f:
+                rows = f.readlines()
+                for row in rows:
+                    if row.strip() and not row.startswith("#"):
+                        row = row.encode('utf-8').decode('unicode-escape')
+                        items = row.split(" = ")
+                        key = items[0]
+                        value = "".join(items[1:])
+                        result[key.strip()] = value.strip()
+        except Exception as e:
+            print(f"Error loading file {filename}: {e}")
+        return result
+
+    def _translate_array(self, array):
+        result = []
+        for item in array:
+            result.append(self.get(item))
+        return result