## Cvs

### Description

Handles packages/modules retrieved from a CVS repository.

When doing automated builds, the get task should be preferred over the checkout command, because of speed.

### Parameters

Attribute | Description | Required
command | the CVS command to execute. | No, default "checkout".
compression | `true` or `false` - if set to true, this is the same as compressionlevel="3" | No. Defaults to false.
compressionlevel | A number between 1 and 9 (corresponding to possible values for CVS' `-z#` argument). Any other value is treated as compression="false" | No. Defaults to no compression.
cvsRoot | the CVSROOT variable. | No
cvsRsh | the CVS_RSH variable. | No
dest | the directory where the checked out files should be placed. | No, default is project's basedir.
package | the package/module to check out. | No
tag | the tag of the package/module to check out. | No
date | Use the most recent revision no later than the given date | No
quiet | suppress informational messages. | No, default "false"
noexec | report only, don't change any files. | No, default to "false"
output | the file to direct standard output from the command. | No, default output to ANT Log as MSG_INFO.
error | the file to direct standard error from the command. | No, default error to ANT Log as MSG_WARN.
append | whether to append output/error when redirecting to a file. | No, default to "false".
port | Port used by CVS to communicate with the server. | No, default port 2401.
passfile | Password file to read passwords from. | No, default file ~/.cvspass.
failonerror | Stop the build process if the command exits with a return code other than 0. Defaults to false | No

### Examples

      <cvs cvsRoot=":pserver:anoncvs@cvs.apache.org:/home/cvspublic"
           package="jakarta-ant"
           dest="${ws.dir}"
      />

checks out the package/module "jakarta-ant" from the CVS repository pointed to by the cvsRoot attribute, and stores the files in "${ws.dir}".

      <cvs dest="${ws.dir}" command="update"/>

updates the package/module that has previously been checked out into "${ws.dir}".

      <cvs command="-q diff -u -N" output="patch.txt"/>

silently (-q) creates a file called patch.txt which contains a unified (-u) diff which includes new files added via "cvs add" (-N) and can be used as input to patch. The equivalent, using <commandline> elements, is:

    <cvs output="patch">
        <commandline>
            <argument value="-q"/>
            <argument value="diff"/>
            <argument value="-u"/>
            <argument value="-N"/>
        </commandline>
    </cvs>

or:

    <cvs output="patch">
        <commandline>
            <argument line="-q diff -u -N"/>
        </commandline>
    </cvs>

You may include as many <commandline> elements as you like. Each will inherit the `failonerror`, `compression`, and other "global" parameters from the `<cvs>` element.

      <cvs command="update -A -d"/>

Updates from the head of repository ignoring sticky bits (-A) and creating any new directories as necessary (-d).

Note: the text of the command is passed to cvs "as-is" so any cvs options should appear before the command, and any command options should appear after the command as in the diff example above. See the cvs manual for details, specifically the Guide to CVS commands

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