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package org.apache.maven.plugin.toolchain; |
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import java.util.ArrayList; |
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import java.util.Iterator; |
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import java.util.List; |
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import org.apache.maven.plugin.AbstractMojo; |
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import org.apache.maven.plugin.MojoExecutionException; |
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18 | 0 | public class HelpMojo |
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extends AbstractMojo |
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{ |
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private boolean detail; |
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private java.lang.String goal; |
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private int lineLength; |
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private int indentSize; |
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public void execute() |
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throws MojoExecutionException |
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{ |
54 | 0 | if ( lineLength <= 0 ) |
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{ |
56 | 0 | getLog().warn( "The parameter 'lineLength' should be positive, using '80' as default." ); |
57 | 0 | lineLength = 80; |
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} |
59 | 0 | if ( indentSize <= 0 ) |
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{ |
61 | 0 | getLog().warn( "The parameter 'indentSize' should be positive, using '2' as default." ); |
62 | 0 | indentSize = 2; |
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} |
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65 | 0 | StringBuffer sb = new StringBuffer(); |
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67 | 0 | append( sb, "org.apache.maven.plugins:maven-toolchains-plugin:1.0", 0 ); |
68 | 0 | append( sb, "", 0 ); |
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70 | 0 | append( sb, "Maven Toolchains Plugin", 0 ); |
71 | 0 | append( sb, "Maven Plugins", 1 ); |
72 | 0 | append( sb, "", 0 ); |
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74 | 0 | if ( goal == null || goal.length() <= 0 ) |
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{ |
76 | 0 | append( sb, "This plugin has 2 goals:", 0 ); |
77 | 0 | append( sb, "", 0 ); |
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} |
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80 | 0 | if ( goal == null || goal.length() <= 0 || "help".equals( goal ) ) |
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{ |
82 | 0 | append( sb, "toolchains:help", 0 ); |
83 | 0 | append( sb, "Display help information on maven-toolchains-plugin.\nCall\n\u00a0\u00a0mvn\u00a0toolchains:help\u00a0-Ddetail=true\u00a0-Dgoal=<goal-name>\nto display parameter details.", 1 ); |
84 | 0 | append( sb, "", 0 ); |
85 | 0 | if ( detail ) |
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{ |
87 | 0 | append( sb, "Available parameters:", 1 ); |
88 | 0 | append( sb, "", 0 ); |
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90 | 0 | append( sb, "detail (Default: false)", 2 ); |
91 | 0 | append( sb, "If true, display all settable properties for each goal.", 3 ); |
92 | 0 | append( sb, "", 0 ); |
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94 | 0 | append( sb, "goal", 2 ); |
95 | 0 | append( sb, "The name of the goal for which to show help. If unspecified, all goals will be displayed.", 3 ); |
96 | 0 | append( sb, "", 0 ); |
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98 | 0 | append( sb, "indentSize (Default: 2)", 2 ); |
99 | 0 | append( sb, "The number of spaces per indentation level, should be positive.", 3 ); |
100 | 0 | append( sb, "", 0 ); |
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102 | 0 | append( sb, "lineLength (Default: 80)", 2 ); |
103 | 0 | append( sb, "The maximum length of a display line, should be positive.", 3 ); |
104 | 0 | append( sb, "", 0 ); |
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} |
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} |
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108 | 0 | if ( goal == null || goal.length() <= 0 || "toolchain".equals( goal ) ) |
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{ |
110 | 0 | append( sb, "toolchains:toolchain", 0 ); |
111 | 0 | append( sb, "(no description available)", 1 ); |
112 | 0 | append( sb, "", 0 ); |
113 | 0 | if ( detail ) |
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{ |
115 | 0 | append( sb, "Available parameters:", 1 ); |
116 | 0 | append( sb, "", 0 ); |
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118 | 0 | append( sb, "toolchains", 2 ); |
119 | 0 | append( sb, "(no description available)", 3 ); |
120 | 0 | append( sb, "", 0 ); |
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} |
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} |
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124 | 0 | if ( getLog().isInfoEnabled() ) |
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{ |
126 | 0 | getLog().info( sb.toString() ); |
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} |
128 | 0 | } |
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private static String repeat( String str, int repeat ) |
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{ |
141 | 0 | StringBuffer buffer = new StringBuffer( repeat * str.length() ); |
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143 | 0 | for ( int i = 0; i < repeat; i++ ) |
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{ |
145 | 0 | buffer.append( str ); |
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} |
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148 | 0 | return buffer.toString(); |
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} |
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private void append( StringBuffer sb, String description, int indent ) |
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{ |
161 | 0 | for ( Iterator it = toLines( description, indent, indentSize, lineLength ).iterator(); it.hasNext(); ) |
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{ |
163 | 0 | sb.append( it.next().toString() ).append( '\n' ); |
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} |
165 | 0 | } |
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private static List toLines( String text, int indent, int indentSize, int lineLength ) |
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{ |
179 | 0 | List lines = new ArrayList(); |
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181 | 0 | String ind = repeat( "\t", indent ); |
182 | 0 | String[] plainLines = text.split( "(\r\n)|(\r)|(\n)" ); |
183 | 0 | for ( int i = 0; i < plainLines.length; i++ ) |
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{ |
185 | 0 | toLines( lines, ind + plainLines[i], indentSize, lineLength ); |
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} |
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188 | 0 | return lines; |
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} |
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private static void toLines( List lines, String line, int indentSize, int lineLength ) |
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{ |
201 | 0 | int lineIndent = getIndentLevel( line ); |
202 | 0 | StringBuffer buf = new StringBuffer( 256 ); |
203 | 0 | String[] tokens = line.split( " +" ); |
204 | 0 | for ( int i = 0; i < tokens.length; i++ ) |
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{ |
206 | 0 | String token = tokens[i]; |
207 | 0 | if ( i > 0 ) |
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{ |
209 | 0 | if ( buf.length() + token.length() >= lineLength ) |
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{ |
211 | 0 | lines.add( buf.toString() ); |
212 | 0 | buf.setLength( 0 ); |
213 | 0 | buf.append( repeat( " ", lineIndent * indentSize ) ); |
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} |
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else |
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{ |
217 | 0 | buf.append( ' ' ); |
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} |
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} |
220 | 0 | for ( int j = 0; j < token.length(); j++ ) |
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{ |
222 | 0 | char c = token.charAt( j ); |
223 | 0 | if ( c == '\t' ) |
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{ |
225 | 0 | buf.append( repeat( " ", indentSize - buf.length() % indentSize ) ); |
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} |
227 | 0 | else if ( c == '\u00A0' ) |
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{ |
229 | 0 | buf.append( ' ' ); |
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} |
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else |
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{ |
233 | 0 | buf.append( c ); |
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} |
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} |
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} |
237 | 0 | lines.add( buf.toString() ); |
238 | 0 | } |
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private static int getIndentLevel( String line ) |
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{ |
248 | 0 | int level = 0; |
249 | 0 | for ( int i = 0; i < line.length() && line.charAt( i ) == '\t'; i++ ) |
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{ |
251 | 0 | level++; |
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} |
253 | 0 | for ( int i = level + 1; i <= level + 4 && i < line.length(); i++ ) |
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{ |
255 | 0 | if ( line.charAt( i ) == '\t' ) |
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{ |
257 | 0 | level++; |
258 | 0 | break; |
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} |
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} |
261 | 0 | return level; |
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} |
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} |