From 30114bd5aada3767f65477613ccfd918989a0c0e Mon Sep 17 00:00:00 2001
From: Wolfgang Lutz <wlut@num42.de>
Date: Tue, 20 May 2025 10:04:31 +0200
Subject: [PATCH] implement escaping of %% to \%

---
 .../StringCatalog+Conversion.swift            |  1 +
 .../Resources/SimpleTest/Input.xcstrings      | 20 ++++++++++++++++++-
 .../Resources/SimpleTest/Output.de.xml        |  1 +
 .../Resources/SimpleTest/Output.en.xml        |  1 +
 4 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/Sources/StringCatalogConverterLibrary/StringCatalog+Conversion.swift b/Sources/StringCatalogConverterLibrary/StringCatalog+Conversion.swift
index 0741577..6d1d765 100644
--- a/Sources/StringCatalogConverterLibrary/StringCatalog+Conversion.swift
+++ b/Sources/StringCatalogConverterLibrary/StringCatalog+Conversion.swift
@@ -15,6 +15,7 @@ extension StringCatalog {
       .replacingOccurrences(of: "'", with: "\\'")
       .replacingOccurrences(of: "%@", with: "%1$s")
       .replacingOccurrences(of: "%d", with: "%2$d")
+      .replacingOccurrences(of: "%%", with: "\\%") // https://stackoverflow.com/a/74864023
   }
   
   public func converted(
diff --git a/Tests/StringCatalogConverterLibraryTests/Resources/SimpleTest/Input.xcstrings b/Tests/StringCatalogConverterLibraryTests/Resources/SimpleTest/Input.xcstrings
index 225ee2d..d8a4e5a 100644
--- a/Tests/StringCatalogConverterLibraryTests/Resources/SimpleTest/Input.xcstrings
+++ b/Tests/StringCatalogConverterLibraryTests/Resources/SimpleTest/Input.xcstrings
@@ -52,6 +52,24 @@
         }
       }
     },
+    "concentrationPercent" : {
+      "comment" : "Label that represents the concentration of a solution in percent",
+      "extractionState" : "manual",
+      "localizations" : {
+        "de" : {
+          "stringUnit" : {
+            "state" : "needs_review",
+            "value" : "Konzentration in %%"
+          }
+        },
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "concentration in %%"
+          }
+        }
+      }
+    },
     "counter.button" : {
       "extractionState" : "manual",
       "localizations" : {
@@ -466,4 +484,4 @@
     }
   },
   "version" : "1.0"
-}
+}
\ No newline at end of file
diff --git a/Tests/StringCatalogConverterLibraryTests/Resources/SimpleTest/Output.de.xml b/Tests/StringCatalogConverterLibraryTests/Resources/SimpleTest/Output.de.xml
index d5a678e..4f4cf2c 100644
--- a/Tests/StringCatalogConverterLibraryTests/Resources/SimpleTest/Output.de.xml
+++ b/Tests/StringCatalogConverterLibraryTests/Resources/SimpleTest/Output.de.xml
@@ -2,6 +2,7 @@
     <string name="child_button">Child Tap</string>
     <string name="collection_empty_message">Es sind keine Elemente anzuzeigen</string>
     <string name="collection_item">Element %1$s</string>
+    <string name="concentrationPercent">Konzentration in \%</string>
     <string name="counter_button">Tap</string>
     <string name="counter_status_text">Anzahl der Child Taps: %2$d</string>
     <string name="counter_website">Number42 Website</string>
diff --git a/Tests/StringCatalogConverterLibraryTests/Resources/SimpleTest/Output.en.xml b/Tests/StringCatalogConverterLibraryTests/Resources/SimpleTest/Output.en.xml
index 314eba4..aee3ae0 100644
--- a/Tests/StringCatalogConverterLibraryTests/Resources/SimpleTest/Output.en.xml
+++ b/Tests/StringCatalogConverterLibraryTests/Resources/SimpleTest/Output.en.xml
@@ -2,6 +2,7 @@
     <string name="child_button">Child Tap</string>
     <string name="collection_empty_message">There are no items to show</string>
     <string name="collection_item">Item %1$s</string>
+    <string name="concentrationPercent">concentration in \%</string>
     <string name="counter_button">Tap</string>
     <string name="counter_status_text">Number of Child Taps: %2$d</string>
     <string name="counter_website">Number42 Website</string>