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(1) Make sure there is a Copyright notice on all visible files. (2) Make sure all years in which the file has been modified are listed. (3) Make sure the format is consistent, i.e. separate consecutive years with a dash, not a comma. When Stephane changed starteam.html it has been 2001 in France but 2002 in Australia - does that mean we add 2002 to the Copyright line or not? ;-) git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@270652 13f79535-47bb-0310-9956-ffa450edef68
117 lines
5.0 KiB
HTML
117 lines
5.0 KiB
HTML
<html>
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<head>
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<meta http-equiv="Content-Language" content="en-us">
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<title>Ant User Manual</title>
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</head>
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<body>
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<h2><a name="replace">ReplaceRegExp</a></h2>
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<h3>Description</h3>
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<p>ReplaceRegExp is a directory based task for replacing the
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occurrence of a given regular expression with a substitution pattern
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in a selected file or set of files.</p>
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<p>Similar to <a href="../CoreTypes/mapper.html#regexp-mapper">regexp
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type mappers</a> this task needs a supporting regular expression
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library and an implementation of
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<code>org.apache.tools.ant.util.regexp.Regexp</code>. Ant comes with
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implementations for
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<a href="http://java.sun.com/j2se/1.4/docs/api/java/util/regex/package-summary.html" target="_top">the java.util.regex package of JDK 1.4</a>,
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<a href="http://jakarta.apache.org/regexp/" target="_top">jakarta-regexp</a>
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and <a href="http://jakarta.apache.org/oro/" target="_top">jakarta-ORO</a>,
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but you will still need the library itself.</p>
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<h3>Parameters</h3>
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<table border="1" cellpadding="2" cellspacing="0">
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<tr>
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<td valign="top"><b>Attribute</b></td>
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<td valign="top"><b>Description</b></td>
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<td align="center" valign="top"><b>Required</b></td>
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</tr>
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<tr>
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<td valign="top">file</td>
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<td valign="top">file for which the regular expression should be replaced.</td>
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<td align="center">Yes if no nested <fileset> is used</td>
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</tr>
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<tr>
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<td valign="top">match</td>
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<td valign="top">The regular expression pattern to match in the file(s)</td>
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<td align="center">Yes, if no nested <regularexpression> is used</td>
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</tr>
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<tr>
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<td valign="top">replace</td>
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<td valign="top">The substition pattern to place in the file(s) in place
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of the regular expression.</td>
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<td align="center">Yes, if no nested <substitution> is used</td>
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</tr>
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<tr>
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<td valign="top">flags</td>
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<td valign="top">The flags to use when matching the regular expression. For more
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information, consult the Perl5 syntax<br />
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g --> Global replacement. Replace all occurances found<br />
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i --> Case Insensitive. Do not consider case in the match<br />
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m --> Multiline. Treat the string as multiple lines of input, using "^" and "$" as the start or end of any line, respectively, rather than start or end of string.<br />
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s --> Singleline. Treat the string as a single line of input, using "." to match any character, including a newline, which normally, it would not match.<br />
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<td valign="top" align="center">No</td>
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</tr>
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<tr>
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<td valign="top">byline</td>
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<td valign="top">Process the file(s) one line at a time, executing the replacement
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on one line at a time (<i>true/false</i>). This is useful if you
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want to only replace the first occurance of a regular expression on
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each line, which is not easy to do when processing the file as a whole.
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Defaults to <i>false</i>.</td>
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<td valign="top" align="center">No</td>
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</tr>
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</table>
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<h3>Examples</h3>
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<pre> <replaceregexp file="${src}/build.properties"
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match="OldProperty=(.*)"
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replace="NewProperty=\1"
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byline="true" />
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</pre>
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<p>replaces occurrences of the property name "OldProperty"
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with "NewProperty" in a properties file, preserving the existing
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value, in the file <code>${src}/build.properties</code></p>
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<h3>Parameters specified as nested elements</h3>
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<p>This task supports a nested <a href="../CoreTypes/fileset.html">FileSet</a>
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element.</p>
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<p>This task supports a nested <i>RegularExpression</i> element to specify
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the regular expression. You can use this element to refer to a previously
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defined regular expression datatype instance.</p>
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<blockquote>
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<regularexpression id="id" pattern="expression" /><br />
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<regularexpression refid="id" />
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</blockquote>
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<p>This task supports a nested <i>Substitution</i> element to specify
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the substitution pattern. You can use this element to refer to a previously
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defined substition pattern datatype instance.</p>
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<blockquote>
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<substitution id="id" pattern="expression" /><br />
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<substitution refid="id" />
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</blockquote>
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<h3>Examples</h3>
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<blockquote>
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<pre>
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<replaceregexp byline="true">
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<regularexpression expression="OldProperty=(.*)" />
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<substitution expression="NewProperty=\1" />
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<fileset dir=".">
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<includes="*.properties" />
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</fileset>
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</replaceregexp>
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</pre></blockquote>
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<p>replaces occurrences of the property name "OldProperty"
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with "NewProperty" in a properties file, preserving the existing
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value, in all files ending in <code>.properties</code> in the current directory</p>
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<hr>
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<p align="center">Copyright © 2001 Apache Software Foundation. All rights
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Reserved.</p>
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</body>
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</html>
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