CvsTagDiff

Description

Generates an XML-formatted report file of the changes between two tags or dates recorded in a CVS repository.

Important: This task needs cvs on the path. If it isn't, you will get an error (such as error=2 on Windows). If <cvs> doesn't work, try to execute cvs.exe from the command line in the target directory in which you are working. Also note that this task assumes that the cvs executable is compatible with the Unix version, this is not completely true for certain other CVS clients—like CVSNT for example—and some operation may fail when using such an incompatible client.

Parameters

Attribute Description Required
startTag The earliest tag from which diffs are to be included in the report. Exactly one of the two
startDate The earliest date from which diffs are to be included in the report.
Accepts all formats accepted by the cvs command for -D date_spec arguments.
endTag The latest tag from which diffs are to be included in the report. Exactly one of the two
endDate The latest date from which diffs are to be included in the report.
Accepts all formats accepted by the cvs command for -D date_spec arguments.
destfile The file in which to write the diff report. Yes
ignoreRemoved When set to true, the report will not include any removed files. Since Apache Ant 1.8.0 No; defaults to false

Parameters inherited from the cvs task

Attribute Description Required
compression true (equivalent to 3), false, or a number between 1 and 9 (corresponding to possible values for CVS -z# argument). Any other value is treated as false No; defaults to no compression
cvsRoot the CVSROOT variable. No
cvsRsh the CVS_RSH variable. No
package the package/module to analyze.
Since Ant 1.6 multiple packages separated by spaces are possible. aliases corresponding to different modules are also possible. Use a nested <module> element if you want to specify a module with spaces in its name.
No
quiet suppress informational messages. No; default false
port Port used by CVS to communicate with the server. No; default 2401
passfile Password file to read passwords from. No; default ~/.cvspass
failonerror Stop the build process if the command exits with a return code other than 0. No; defaults to false

Parameters specified as nested elements

module

Specifies a package/module to work on, unlike the package attribute modules specified using this attribute can contain spaces in their name.

Attribute Description Required
name Name of the module/package. Yes

Examples

Generate a tagdiff report for all the changes that have been made in the ant module between the tags ANT_14 and ANT_141. Write these changes into the file tagdiff.xml.

<cvstagdiff cvsRoot=":pserver:anoncvs@cvs.apache.org:/home/cvspublic"
            destfile="tagdiff.xml"
            package="ant"
            startTag="ANT_14"
            endTag="ANT_141"/>

Generate a tagdiff report for all the changes that have been made in the ant module in January 2002. Write the changes into the file tagdiff.xml. In this example, cvsRoot has not been set. The current cvsRoot will be used (assuming the build is started from a folder stored in CVS.

<cvstagdiff destfile="tagdiff.xml"
            package="ant"
            startDate="2002-01-01"
            endDate="2002-31-01"/>

Generate a tagdiff report for all the changes that have been made in the ant and jakarta-gump modules in January 2003. Write the changes into the file tagdiff.xml. In this example, cvsRoot has not been set. The current cvsRoot will be used (assuming the build is started from a folder stored in CVS.

<cvstagdiff destfile="tagdiff.xml"
            package="ant jakarta-gump"
            startDate="2003-01-01"
            endDate="2003-31-01"/>

Generate Report

Ant includes a basic XSLT stylesheet that you can use to generate a HTML report based on the XML output. The following example illustrates how to generate an HTML report from the XML report.

<style in="tagdiff.xml"
       out="tagdiff.html"
       style="${ant.home}/etc/tagdiff.xsl">
  <param name="title" expression="Ant Diff"/>
  <param name="module" expression="ant"/>
  <param name="cvsweb" expression="http://cvs.apache.org/viewcvs/"/>
</style>

Output

The cvsroot and package attributes of the <tagdiff> element are added since Ant 1.6.

Description of <entry> attributes:

Attribute Comment
name when reporting on one package, the package name is removed from the output
revision supplied for files which exist at the end of the reporting period
prevrevision supplied for files which exist at the beginning of the reporting period.
Old CVS servers do not supply it for deleted files. CVS 1.12.2 supplies it.

Example:

<?xml version="1.0" encoding="UTF-8"?>
<tagdiff startTag="ANT_14" endTag="ANT_141"
         cvsroot=":pserver:anoncvs@cvs.apache.org:/home/cvspublic" package="ant">
  <entry>
    <file>
      <name>src/main/org/apache/tools/ant/DirectoryScanner.java</name>
      <revision>1.15.2.1</revision>
      <prevrevision>1.15</prevrevision>
    </file>
  </entry>
</tagdiff>