Fix encoding problem when CodedCharacterSet is set to "ESC - A"

    According to https://en.wikipedia.org/wiki/ISO/IEC_2022#cite_note-14.3.2-90 ISO-8859-1 should be used both when CodedCharacterSet is

     ESC % A
     ESC . A
     ESC - A

    Previously, only the first two syntaxes was supported.

Source/com/drew/metadata/iptc/Iso2022Converter.java

@@ -37,6 +37,7 @@ public final class Iso2022Converter
     private static final int DOT = 0xe280a2;
     private static final byte LATIN_CAPITAL_G = 0x47;
     private static final byte PERCENT_SIGN = 0x25;
+    private static final byte MINUS_SIGN = 0x2D;
     private static final byte DOT_SIGN = 0x2E;
     private static final byte ESC = 0x1B;
 
@@ -59,6 +60,9 @@ public static String convertISO2022CharsetToJavaCharset(@NotNull final byte[] by
         if (bytes.length > 3 && bytes[0] == ESC && (bytes[3] & 0xFF | ((bytes[2] & 0xFF) << 8) | ((bytes[1] & 0xFF) << 16)) == DOT && bytes[4] == LATIN_CAPITAL_A)
             return ISO_8859_1;
 
+        if (bytes.length > 2 && bytes[0] == ESC && bytes[1] == MINUS_SIGN && bytes[2] == LATIN_CAPITAL_A)
+            return ISO_8859_1;
+
         return null;
     }
 

Tests/com/drew/metadata/iptc/Iso2022ConverterTest.java

@@ -32,5 +32,6 @@ public void testConvertISO2022CharsetToJavaCharset() throws Exception
         assertEquals("UTF-8", Iso2022Converter.convertISO2022CharsetToJavaCharset(new byte[]{0x1B, 0x25, 0x47}));
         assertEquals("ISO-8859-1", Iso2022Converter.convertISO2022CharsetToJavaCharset(new byte[]{0x1B, 0x2E, 0x41}));
         assertEquals("ISO-8859-1", Iso2022Converter.convertISO2022CharsetToJavaCharset(new byte[]{0x1B, (byte)0xE2, (byte)0x80, (byte)0xA2, 0x41}));
+        assertEquals("ISO-8859-1", Iso2022Converter.convertISO2022CharsetToJavaCharset(new byte[]{0x1B, (byte)0x2D, (byte)0x41}));
     }
 }