Coverage Report

Coverage Report - com.jcabi.log.PreFormatter

Classes in this File

Line Coverage

Branch Coverage

Complexity

PreFormatter

0/33

0/22

2.5

 /**
  * Copyright (c) 2012-2015, jcabi.com
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met: 1) Redistributions of source code must retain the above
  * copyright notice, this list of conditions and the following
  * disclaimer. 2) Redistributions in binary form must reproduce the above
  * copyright notice, this list of conditions and the following
  * disclaimer in the documentation and/or other materials provided
  * with the distribution. 3) Neither the name of the jcabi.com nor
  * the names of its contributors may be used to endorse or promote
  * products derived from this software without specific prior written
  * permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
  * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
  * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
  * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  * OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 package com.jcabi.log;
 
 import java.util.Arrays;
 import java.util.List;
 import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import lombok.EqualsAndHashCode;
 import lombok.ToString;
 
 /**
  * Processor of formatting string and arguments, before sending it to
  * {@link String#format(String,Object[])}.
  *
  * @author Marina Kosenko (marina.kosenko@gmail.com)
  * @author Yegor Bugayenko (yegor@teamed.io)
  * @version $Id: 9d4a914e3f543b9532b9eca46eada73c95b48ed0 $
  * @since 0.1
  */
 @ToString
 @EqualsAndHashCode(of = { "format", "arguments" })
 final class PreFormatter {
 
     /**
      * Pattern used for matching format string arguments.
      */
     private static final Pattern PATTERN = Pattern.compile(
         // @checkstyle LineLength (1 line)
         "%(?:\\d+\\$)?(\\[([A-Za-z\\-\\.0-9]+)\\])?[\\+\\-]?(?:\\d*(?:\\.\\d+)?)?[a-zA-Z%]"
     );
 
     /**
      * List of no argument specifier.
      */
     private static final List<String> NO_ARG_SPECIFIERS =
         Arrays.asList("%n", "%%");
 
     /**
      * The formatting string.
      */
     private transient String format;
 
     /**
      * List of arguments.
      */
     private transient List<Object> arguments;
 
     /**
      * Public ctor.
      * @param fmt The formatting string
      * @param args The list of arguments
      */
     public PreFormatter(final String fmt, final Object... args) {
         this.process(fmt, args);
     }
 
     /**
      * Get new formatting string.
      * @return The formatting text
      */
     public String getFormat() {
         return this.format;
     }
 
     /**
      * Get new list of arguments.
      * @return The list of arguments
      */
     public Object[] getArguments() {
         return this.arguments.toArray(new Object[this.arguments.size()]);
     }
 
     /**
      * Process the data provided.
      * @param fmt The formatting string
      * @param args The list of arguments
      */
     private void process(final String fmt, final Object... args) {
         this.arguments = new CopyOnWriteArrayList<Object>();
         final StringBuffer buf = new StringBuffer();
         final Matcher matcher = PATTERN.matcher(fmt);
         int pos = 0;
         while (matcher.find()) {
             final String group = matcher.group();
             if (NO_ARG_SPECIFIERS.contains(group)) {
                 matcher.appendReplacement(
                     buf,
                     Matcher.quoteReplacement(group)
                 );
             } else {
                 final String decor = matcher.group(2);
                 if (decor == null) {
                     matcher.appendReplacement(
                         buf,
                         Matcher.quoteReplacement(group)
                     );
                     this.arguments.add(args[pos]);
                 } else {
                     matcher.appendReplacement(
                         buf,
                         Matcher.quoteReplacement(
                             group.replace(matcher.group(1), "")
                         )
                     );
                     try {
                         this.arguments.add(
                             DecorsManager.decor(decor, args[pos])
                         );
                     } catch (final DecorException ex) {
                         this.arguments.add(
                             String.format("[%s]", ex.getMessage())
                         );
                     }
                 }
                 pos += 1;
             }
         }
         if (pos < args.length) {
             throw new IllegalArgumentException(
                 String.format(
                     // @checkstyle LineLength (1 line)
                     "There are %d parameter(s) but only %d format argument(s) were provided.",
                     args.length,
                     pos
                 )
             );
         }
         matcher.appendTail(buf);
         this.format = buf.toString();
     }
 
 }

1		/**
2		* Copyright (c) 2012-2015, jcabi.com
3		* All rights reserved.
4		*
5		* Redistribution and use in source and binary forms, with or without
6		* modification, are permitted provided that the following conditions
7		* are met: 1) Redistributions of source code must retain the above
8		* copyright notice, this list of conditions and the following
9		* disclaimer. 2) Redistributions in binary form must reproduce the above
10		* copyright notice, this list of conditions and the following
11		* disclaimer in the documentation and/or other materials provided
12		* with the distribution. 3) Neither the name of the jcabi.com nor
13		* the names of its contributors may be used to endorse or promote
14		* products derived from this software without specific prior written
15		* permission.
16		*
17		* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18		* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
19		* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20		* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
21		* THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
22		* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23		* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24		* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26		* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27		* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
28		* OF THE POSSIBILITY OF SUCH DAMAGE.
29		*/
30		package com.jcabi.log;
31
32		import java.util.Arrays;
33		import java.util.List;
34		import java.util.concurrent.CopyOnWriteArrayList;
35		import java.util.regex.Matcher;
36		import java.util.regex.Pattern;
37		import lombok.EqualsAndHashCode;
38		import lombok.ToString;
39
40		/**
41		* Processor of formatting string and arguments, before sending it to
42		* {@link String#format(String,Object[])}.
43		*
44		* @author Marina Kosenko (marina.kosenko@gmail.com)
45		* @author Yegor Bugayenko (yegor@teamed.io)
46		* @version $Id: 9d4a914e3f543b9532b9eca46eada73c95b48ed0 $
47		* @since 0.1
48		*/
49	0	@ToString
50	0	@EqualsAndHashCode(of = { "format", "arguments" })
51		final class PreFormatter {
52
53		/**
54		* Pattern used for matching format string arguments.
55		*/
56	0	private static final Pattern PATTERN = Pattern.compile(
57		// @checkstyle LineLength (1 line)
58		"%(?:\\d+\\$)?(\\[([A-Za-z\\-\\.0-9]+)\\])?[\\+\\-]?(?:\\d*(?:\\.\\d+)?)?[a-zA-Z%]"
59		);
60
61		/**
62		* List of no argument specifier.
63		*/
64	0	private static final List<String> NO_ARG_SPECIFIERS =
65		Arrays.asList("%n", "%%");
66
67		/**
68		* The formatting string.
69		*/
70		private transient String format;
71
72		/**
73		* List of arguments.
74		*/
75		private transient List<Object> arguments;
76
77		/**
78		* Public ctor.
79		* @param fmt The formatting string
80		* @param args The list of arguments
81		*/
82	0	public PreFormatter(final String fmt, final Object... args) {
83	0	this.process(fmt, args);
84	0	}
85
86		/**
87		* Get new formatting string.
88		* @return The formatting text
89		*/
90		public String getFormat() {
91	0	return this.format;
92		}
93
94		/**
95		* Get new list of arguments.
96		* @return The list of arguments
97		*/
98		public Object[] getArguments() {
99	0	return this.arguments.toArray(new Object[this.arguments.size()]);
100		}
101
102		/**
103		* Process the data provided.
104		* @param fmt The formatting string
105		* @param args The list of arguments
106		*/
107		private void process(final String fmt, final Object... args) {
108	0	this.arguments = new CopyOnWriteArrayList<Object>();
109	0	final StringBuffer buf = new StringBuffer();
110	0	final Matcher matcher = PATTERN.matcher(fmt);
111	0	int pos = 0;
112	0	while (matcher.find()) {
113	0	final String group = matcher.group();
114	0	if (NO_ARG_SPECIFIERS.contains(group)) {
115	0	matcher.appendReplacement(
116		buf,
117		Matcher.quoteReplacement(group)
118		);
119		} else {
120	0	final String decor = matcher.group(2);
121	0	if (decor == null) {
122	0	matcher.appendReplacement(
123		buf,
124		Matcher.quoteReplacement(group)
125		);
126	0	this.arguments.add(args[pos]);
127		} else {
128	0	matcher.appendReplacement(
129		buf,
130		Matcher.quoteReplacement(
131		group.replace(matcher.group(1), "")
132		)
133		);
134		try {
135	0	this.arguments.add(
136		DecorsManager.decor(decor, args[pos])
137		);
138	0	} catch (final DecorException ex) {
139	0	this.arguments.add(
140		String.format("[%s]", ex.getMessage())
141		);
142	0	}
143		}
144	0	pos += 1;
145		}
146	0	}
147	0	if (pos < args.length) {
148	0	throw new IllegalArgumentException(
149		String.format(
150		// @checkstyle LineLength (1 line)
151		"There are %d parameter(s) but only %d format argument(s) were provided.",
152		args.length,
153		pos
154		)
155		);
156		}
157	0	matcher.appendTail(buf);
158	0	this.format = buf.toString();
159	0	}
160
161		}