Coverage Report

Coverage Report - org.apache.johnzon.core.Strings

Classes in this File

Line Coverage

Branch Coverage

Complexity

Strings

65 %

32/49

56 %

22/39

10,75

 /*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements. See the NOTICE file
  * distributed with this work for additional information
  * regarding copyright ownership. The ASF licenses this file
  * to you under the Apache License, Version 2.0 (the
  * "License"); you may not use this file except in compliance
  * with the License. You may obtain a copy of the License at
  *
  * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing,
  * software distributed under the License is distributed on an
  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  * KIND, either express or implied. See the License for the
  * specific language governing permissions and limitations
  * under the License.
  */
 package org.apache.johnzon.core;
 
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentMap;
 
 import javax.json.stream.JsonParsingException;
 
 class Strings implements JsonChars {
     private static final BufferStrategy.BufferProvider<StringBuilder> BUILDER_CACHE =
         BufferStrategy.valueOf(System.getProperty("johnzon.string-builder.strategy", "QUEUE"))
             .newStringBuilderProvider(Integer.getInteger("org.apache.johnzon.default-string-builder", 1024));
 
     private static final String UNICODE_PREFIX = "\\u";
     private static final String UNICODE_PREFIX_HELPER = "000";
     private static final ConcurrentMap<Character, String> UNICODE_CACHE = new ConcurrentHashMap<Character, String>();
 
     static char asEscapedChar(final char current) {
         switch (current) {
             case 'r':
                 return '\r';
             case 't':
                 return '\t';
             case 'b':
                 return '\b';
             case 'f':
                 return '\f';
             case 'n':
                 return '\n';
             case '"':
                 return '\"';
             case '\\':
                 return '\\';  
             case '/':
                 return '/';  
             default:
                 if(Character.isHighSurrogate(current) || Character.isLowSurrogate(current)) {
                     return current;
                 }
                 throw new JsonParsingException("Invalid escape sequence '"+current +"' (Codepoint: "+String.valueOf(current).
                         codePointAt(0),JsonLocationImpl.UNKNOWN_LOCATION);
         }
 
     }
 
     static String escape(final String value) {
         
         if(value == null || value.length()==0) {
             return value;
         }
         
         final StringBuilder builder = BUILDER_CACHE.newBuffer();
         try {
             for (int i = 0; i < value.length(); i++) {
                 final char c = value.charAt(i);
                 switch (c) {
                     case QUOTE_CHAR:
                     case ESCAPE_CHAR:
                         builder.append(ESCAPE_CHAR).append(c);
                         break;
                     default:
                         if (c < SPACE) { // we could do a single switch but actually we should rarely enter this if so no need to pay it
                             switch (c) {
                                 case EOL:
                                     builder.append("\\n");
                                     break;
                                 case '\r':
                                     builder.append("\\r");
                                     break;
                                 case '\t':
                                     builder.append("\\t");
                                     break;
                                 case '\b':
                                     builder.append("\\b");
                                     break;
                                 case '\f':
                                     builder.append("\\f");
                                     break;
                                 default:
                                     builder.append(toUnicode(c));
                             }
                         } else if ((c >= '\u0080' && c < '\u00a0') || (c >= '\u2000' && c < '\u2100')) {
                             builder.append(toUnicode(c));
                         } else {
                             builder.append(c);
                         }
                 }
             }
             return builder.toString();
         } finally {
             BUILDER_CACHE.release(builder);
         }
     }
 
     private static String toUnicode(final char c) {
         final String found = UNICODE_CACHE.get(c);
         if (found != null) {
             return found;
         }
 
         final String hex = UNICODE_PREFIX_HELPER + Integer.toHexString(c);
         final String s = UNICODE_PREFIX + hex.substring(hex.length() - 4);
         UNICODE_CACHE.putIfAbsent(c, s);
         return s;
     }
 
     private Strings() {
         // no-op
     }
 }

1		/*
2		* Licensed to the Apache Software Foundation (ASF) under one
3		* or more contributor license agreements. See the NOTICE file
4		* distributed with this work for additional information
5		* regarding copyright ownership. The ASF licenses this file
6		* to you under the Apache License, Version 2.0 (the
7		* "License"); you may not use this file except in compliance
8		* with the License. You may obtain a copy of the License at
9		*
10		* http://www.apache.org/licenses/LICENSE-2.0
11		*
12		* Unless required by applicable law or agreed to in writing,
13		* software distributed under the License is distributed on an
14		* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15		* KIND, either express or implied. See the License for the
16		* specific language governing permissions and limitations
17		* under the License.
18		*/
19		package org.apache.johnzon.core;
20
21		import java.util.concurrent.ConcurrentHashMap;
22		import java.util.concurrent.ConcurrentMap;
23
24		import javax.json.stream.JsonParsingException;
25
26		class Strings implements JsonChars {
27	1	private static final BufferStrategy.BufferProvider<StringBuilder> BUILDER_CACHE =
28		BufferStrategy.valueOf(System.getProperty("johnzon.string-builder.strategy", "QUEUE"))
29		.newStringBuilderProvider(Integer.getInteger("org.apache.johnzon.default-string-builder", 1024));
30
31		private static final String UNICODE_PREFIX = "\\u";
32		private static final String UNICODE_PREFIX_HELPER = "000";
33	1	private static final ConcurrentMap<Character, String> UNICODE_CACHE = new ConcurrentHashMap<Character, String>();
34
35		static char asEscapedChar(final char current) {
36	10886	switch (current) {
37		case 'r':
38	3805	return '\r';
39		case 't':
40	3197	return '\t';
41		case 'b':
42	1	return '\b';
43		case 'f':
44	1	return '\f';
45		case 'n':
46	3805	return '\n';
47		case '"':
48	75	return '\"';
49		case '\\':
50	0	return '\\';
51		case '/':
52	1	return '/';
53		default:
54	1	if(Character.isHighSurrogate(current) \|\| Character.isLowSurrogate(current)) {
55	0	return current;
56		}
57	1	throw new JsonParsingException("Invalid escape sequence '"+current +"' (Codepoint: "+String.valueOf(current).
58		codePointAt(0),JsonLocationImpl.UNKNOWN_LOCATION);
59		}
60
61		}
62
63		static String escape(final String value) {
64
65	12	if(value == null \|\| value.length()==0) {
66	0	return value;
67		}
68
69	12	final StringBuilder builder = BUILDER_CACHE.newBuffer();
70		try {
71	32	for (int i = 0; i < value.length(); i++) {
72	20	final char c = value.charAt(i);
73	20	switch (c) {
74		case QUOTE_CHAR:
75		case ESCAPE_CHAR:
76	3	builder.append(ESCAPE_CHAR).append(c);
77	3	break;
78		default:
79	17	if (c < SPACE) { // we could do a single switch but actually we should rarely enter this if so no need to pay it
80	1	switch (c) {
81		case EOL:
82	0	builder.append("\\n");
83	0	break;
84		case '\r':
85	0	builder.append("\\r");
86	0	break;
87		case '\t':
88	0	builder.append("\\t");
89	0	break;
90		case '\b':
91	0	builder.append("\\b");
92	0	break;
93		case '\f':
94	0	builder.append("\\f");
95	0	break;
96		default:
97	1	builder.append(toUnicode(c));
98		}
99	16	} else if ((c >= '\u0080' && c < '\u00a0') \|\| (c >= '\u2000' && c < '\u2100')) {
100	0	builder.append(toUnicode(c));
101		} else {
102	16	builder.append(c);
103		}
104		}
105		}
106	12	return builder.toString();
107		} finally {
108	12	BUILDER_CACHE.release(builder);
109		}
110		}
111
112		private static String toUnicode(final char c) {
113	1	final String found = UNICODE_CACHE.get(c);
114	1	if (found != null) {
115	0	return found;
116		}
117
118	1	final String hex = UNICODE_PREFIX_HELPER + Integer.toHexString(c);
119	1	final String s = UNICODE_PREFIX + hex.substring(hex.length() - 4);
120	1	UNICODE_CACHE.putIfAbsent(c, s);
121	1	return s;
122		}
123
124	0	private Strings() {
125		// no-op
126	0	}
127		}