Add helper function to combine JSON strings as larger JSON file

novelwriter/common.py

@@ -560,6 +560,12 @@ def jsonEncode(data: dict | list | tuple, n: int = 0, nmax: int = 0) -> str:
     return "".join(buffer)
 
 
+def jsonCombine(data: dict[str, str]) -> str:
+    """Combine multiple already packed JSON strings."""
+    payload = ",\n".join(f'  "{k}": {v}' for k, v in data.items())
+    return f"{{\n{payload}\n}}\n"
+
+
 ##
 #  XML Helpers
 ##

tests/test_base/test_base_common.py

@@ -36,10 +36,10 @@ from novelwriter.common import (
     describeFont, elide, encodeMimeHandles, firstFloat, fontMatcher,
     formatFileFilter, formatInt, formatTime, formatTimeStamp, formatVersion,
     fuzzyTime, getFileSize, hexToInt, isHandle, isItemClass, isItemLayout,
-    isItemType, isListInstance, isTitleTag, jsonEncode, makeFileNameSafe,
-    minmax, numberToRoman, openExternalPath, processDialogSymbols,
-    readTextFile, simplified, transferCase, uniqueCompact, utf16CharMap,
-    xmlElement, xmlIndent, xmlSubElem, yesNo
+    isItemType, isListInstance, isTitleTag, jsonCombine, jsonEncode,
+    makeFileNameSafe, minmax, numberToRoman, openExternalPath,
+    processDialogSymbols, readTextFile, simplified, transferCase,
+    uniqueCompact, utf16CharMap, xmlElement, xmlIndent, xmlSubElem, yesNo
 )
 from novelwriter.enum import nwItemClass
 
@@ -651,6 +651,17 @@ def testBaseCommon_jsonEncode():
     )
 
 
+@pytest.mark.base
+def testBaseCommon_jsonCombine():
+    """Test the jsonCombine function."""
+    assert jsonCombine({"a": "[1, 2]", "b": "[3, 4]"}) == (
+        '{\n'
+        '  "a": [1, 2],\n'
+        '  "b": [3, 4]\n'
+        '}\n'
+    )
+
+
 @pytest.mark.base
 def testBaseCommon_xmlIndent():
     """Test the xmlIndent function."""

tests/tools.py

@@ -66,8 +66,8 @@ class C:
 def cmpFiles(
     fileOne: str | Path,
     fileTwo: str | Path,
-    ignoreLines: list | None = None,
-    ignoreStart: tuple | None = None
+    ignoreLines: list[int] | None = None,
+    ignoreStart: tuple[str] | None = None
 ) -> bool:
     """Compare two files, with optional line ignore."""
     if ignoreLines is None: