Add escape quote utility method.

comodal · Sep 26, 2023 · e70139d · e70139d
1 parent ab93910
commit e70139d
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Showing 4 changed files with 45 additions and 41 deletions.
diff --git a/.github/workflows/gradle-nightly.yml b/.github/workflows/gradle-nightly.yml
diff --git a/.github/workflows/gradle.yml b/.github/workflows/gradle.yml
@@ -5,8 +5,6 @@ on:
     branches:
       - master
   pull_request:
-  schedule:
-    - cron: '0 0 * * 1,4'
 
 jobs:
   check:

diff --git a/systems.comodal.json_iterator/src/main/java/systems/comodal/jsoniter/JIUtil.java b/systems.comodal.json_iterator/src/main/java/systems/comodal/jsoniter/JIUtil.java
@@ -38,4 +38,36 @@ public static long compileReplacePattern(final byte byteToFind) {
         | (pattern << 48)
         | (pattern << 56);
   }
+
+  public static String escapeQuotes(final String str) {
+    final char[] chars = str.toCharArray();
+    final char[] escaped = new char[chars.length << 1];
+    char c;
+    for (int escapes = 0, from = 0, dest = 0, to = 0; ; to++) {
+      if (to == chars.length) {
+        if (from == 0) {
+          return str;
+        } else {
+          final int len = to - from;
+          System.arraycopy(chars, from, escaped, dest, len);
+          dest += len;
+          return new String(escaped, 0, dest);
+        }
+      } else {
+        c = chars[to];
+        if (c == '\\') {
+          escapes++;
+        } else if (c == '"' && (escapes & 1) == 0) {
+          final int len = to - from;
+          System.arraycopy(chars, from, escaped, dest, len);
+          dest += len;
+          escaped[dest++] = '\\';
+          from = to;
+          escapes = 0;
+        } else {
+          escapes = 0;
+        }
+      }
+    }
+  }
 }
diff --git a/systems.comodal.json_iterator/src/test/java/systems/comodal/jsoniter/TestString.java b/systems.comodal.json_iterator/src/test/java/systems/comodal/jsoniter/TestString.java
@@ -31,6 +31,19 @@ void test_ascii_string(final JsonIteratorFactory factory) {
     assertArrayEquals(world, ji.decodeBase64String());
   }
 
+  @Test
+  void testEscapeQuotes() {
+    var nestedJson = """
+        {"hello": "world"}""";
+    assertEquals("""
+        {\\"hello\\": \\"world\\"}""", JIUtil.escapeQuotes(nestedJson));
+
+    nestedJson = """
+        {"hello": "\\"world\\""}""";
+    assertEquals("""
+        {\\"hello\\": \\"\\"world\\"\\"}""", JIUtil.escapeQuotes(nestedJson));
+  }
+
   @ParameterizedTest
   @MethodSource("systems.comodal.jsoniter.TestFactories#factories")
   void testRandomBase64Data(final JsonIteratorFactory factory) {