Coverage Report

Coverage Report - com.jcabi.log.SizeDecor

Classes in this File

Line Coverage

Branch Coverage

Complexity

SizeDecor

0/36

0/26

3.333

 /**
  * 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.Formattable;
 import java.util.FormattableFlags;
 import java.util.Formatter;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentMap;
 import lombok.EqualsAndHashCode;
 import lombok.ToString;
 
 /**
  * Size decorator.
  * @author Marina Kosenko (marina.kosenko@gmail.com)
  * @author Yegor Bugayenko (yegor@teamed.io)
  * @author Carlos Miranda (miranda.cma@gmail.com)
  * @version $Id: 5344ac17c1929ea2ebc75088692334e5cd25e8a4 $
  * @since 0.1
  */
 @ToString
 @EqualsAndHashCode(of = "size")
 final class SizeDecor implements Formattable {
 
     /**
      * Highest power supported by this SizeDecor.
      */
     private static final int MAX_POWER = 6;
 
     /**
      * Map of prefixes for powers of 1024.
      */
     private static final ConcurrentMap<Integer, String> SUFFIXES =
         new ConcurrentHashMap<Integer, String>();
 
     /**
      * The size to work with.
      */
     private final transient Long size;
 
     static {
         // @checkstyle MagicNumber (9 lines)
         SizeDecor.SUFFIXES.put(0, "b");
         SizeDecor.SUFFIXES.put(1, "Kb");
         SizeDecor.SUFFIXES.put(2, "Mb");
         SizeDecor.SUFFIXES.put(3, "Gb");
         SizeDecor.SUFFIXES.put(4, "Tb");
         SizeDecor.SUFFIXES.put(5, "Pb");
         SizeDecor.SUFFIXES.put(6, "Eb");
     }
 
     /**
      * Public ctor.
      * @param sze The size
      */
     public SizeDecor(final Long sze) {
         this.size = sze;
     }
 
     /**
      * {@inheritDoc}
      * @checkstyle ParameterNumber (4 lines)
      */
     @Override
     public void formatTo(final Formatter formatter, final int flags,
         final int width, final int precision) {
         if (this.size == null) {
             formatter.format("NULL");
         } else {
             final StringBuilder format = new StringBuilder().append('%');
             if ((flags & FormattableFlags.LEFT_JUSTIFY) == FormattableFlags
                 .LEFT_JUSTIFY) {
                 format.append('-');
             }
             if (width > 0) {
                 format.append(Integer.toString(width));
             }
             if ((flags & FormattableFlags.UPPERCASE) == FormattableFlags
                 .UPPERCASE) {
                 format.append('S');
             } else {
                 format.append('s');
             }
             formatter.format(
                 format.toString(), this.formatSizeWithSuffix(precision)
             );
         }
     }
 
     /**
      * Format the size, with suffix.
      * @param precision The precision to use
      * @return The formatted size
      */
     private String formatSizeWithSuffix(final int precision) {
         int power = 0;
         double number = this.size;
         // @checkstyle MagicNumber (2 lines)
         while (number / 1024 >= 1 && power < SizeDecor.MAX_POWER) {
             number = number / 1024;
             power += 1;
         }
         final String suffix = SizeDecor.SUFFIXES.get(power);
         final String format;
         if (precision >= 0) {
             format = String.format("%%.%df%%s", precision);
         } else {
             format = "%.0f%s";
         }
         return String.format(format, number, suffix);
     }
 
 }

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.Formattable;
33		import java.util.FormattableFlags;
34		import java.util.Formatter;
35		import java.util.concurrent.ConcurrentHashMap;
36		import java.util.concurrent.ConcurrentMap;
37		import lombok.EqualsAndHashCode;
38		import lombok.ToString;
39
40		/**
41		* Size decorator.
42		* @author Marina Kosenko (marina.kosenko@gmail.com)
43		* @author Yegor Bugayenko (yegor@teamed.io)
44		* @author Carlos Miranda (miranda.cma@gmail.com)
45		* @version $Id: 5344ac17c1929ea2ebc75088692334e5cd25e8a4 $
46		* @since 0.1
47		*/
48	0	@ToString
49	0	@EqualsAndHashCode(of = "size")
50		final class SizeDecor implements Formattable {
51
52		/**
53		* Highest power supported by this SizeDecor.
54		*/
55		private static final int MAX_POWER = 6;
56
57		/**
58		* Map of prefixes for powers of 1024.
59		*/
60	0	private static final ConcurrentMap<Integer, String> SUFFIXES =
61		new ConcurrentHashMap<Integer, String>();
62
63		/**
64		* The size to work with.
65		*/
66		private final transient Long size;
67
68		static {
69		// @checkstyle MagicNumber (9 lines)
70	0	SizeDecor.SUFFIXES.put(0, "b");
71	0	SizeDecor.SUFFIXES.put(1, "Kb");
72	0	SizeDecor.SUFFIXES.put(2, "Mb");
73	0	SizeDecor.SUFFIXES.put(3, "Gb");
74	0	SizeDecor.SUFFIXES.put(4, "Tb");
75	0	SizeDecor.SUFFIXES.put(5, "Pb");
76	0	SizeDecor.SUFFIXES.put(6, "Eb");
77	0	}
78
79		/**
80		* Public ctor.
81		* @param sze The size
82		*/
83	0	public SizeDecor(final Long sze) {
84	0	this.size = sze;
85	0	}
86
87		/**
88		* {@inheritDoc}
89		* @checkstyle ParameterNumber (4 lines)
90		*/
91		@Override
92		public void formatTo(final Formatter formatter, final int flags,
93		final int width, final int precision) {
94	0	if (this.size == null) {
95	0	formatter.format("NULL");
96		} else {
97	0	final StringBuilder format = new StringBuilder().append('%');
98	0	if ((flags & FormattableFlags.LEFT_JUSTIFY) == FormattableFlags
99		.LEFT_JUSTIFY) {
100	0	format.append('-');
101		}
102	0	if (width > 0) {
103	0	format.append(Integer.toString(width));
104		}
105	0	if ((flags & FormattableFlags.UPPERCASE) == FormattableFlags
106		.UPPERCASE) {
107	0	format.append('S');
108		} else {
109	0	format.append('s');
110		}
111	0	formatter.format(
112		format.toString(), this.formatSizeWithSuffix(precision)
113		);
114		}
115	0	}
116
117		/**
118		* Format the size, with suffix.
119		* @param precision The precision to use
120		* @return The formatted size
121		*/
122		private String formatSizeWithSuffix(final int precision) {
123	0	int power = 0;
124	0	double number = this.size;
125		// @checkstyle MagicNumber (2 lines)
126	0	while (number / 1024 >= 1 && power < SizeDecor.MAX_POWER) {
127	0	number = number / 1024;
128	0	power += 1;
129		}
130	0	final String suffix = SizeDecor.SUFFIXES.get(power);
131		final String format;
132	0	if (precision >= 0) {
133	0	format = String.format("%%.%df%%s", precision);
134		} else {
135	0	format = "%.0f%s";
136		}
137	0	return String.format(format, number, suffix);
138		}
139
140		}