I'm currenly working on moving a build system that comprises mainly of shell scripts
to maven. One of the things that the current system does is create a changelog file
(changelog.${build.number}) that contains all CVS commit logs since the last release.
We use build numbers, but releases are around every 100 builds, so the number is not
sequential.
The code I have currently works, but it's not easy to understand and it seems like
there should be an easier way. Below is an example goal that works! and gets the last
modified time from the last sequential file, which in my build process is used to get
commit log entries from CVS.
--project.xml snippet---
!-- for the script tag --
dependency
groupIdant/groupId
artifactIdant-apache-bsf/artifactId
version1.6/version
propertiesclassloaderroot/classloader/properties
urlhttp://jakarta.apache.org/bsf//url
/dependency
!-- for the script tag --
dependency
groupIdbsf/groupId
artifactIdbsf/artifactId
version2.2/version
propertiesclassloaderroot/classloader/properties
urlhttp://www-124.ibm.com/developerworks/projects/bsf/url
/dependency
!-- for the javascript-specific script tag --
dependency
groupIdrhino/groupId
artifactIdjs/artifactId
version1.5R4-RC3/version
propertiesclassloaderroot/classloader/properties
urlhttp://www.mozilla.org/rhino//url
/dependency
--maven.xml snippet--
goal name=last-sequential-file description=Finds the last file in a directory
taskdef name=script classname=org.apache.tools.ant.taskdefs.optional.Script /
!-- the oldest messages log, last sequentially (just an example, not actual use)
--
fileset id=files dir=/var/loginclude name=messages.*.gz//fileset
!-- Get the count of files --
script language=javascript ![CDATA[
project.setProperty(count,
files.getDirectoryScanner(project).getIncludedFiles().length);
]] /script
!-- if no file found, output all changelog entries since the beginning --
j:if test=${count == 0}
echo taskname=count message=No files were found/
/j:if
j:if test=${count != 0}
!-- find the last file in that directory --
script language=javascript ![CDATA[
srcFiles = files.getDirectoryScanner(project).getIncludedFiles();
filename = new java.lang.String(srcFiles[0]);
for (i = 1; i != srcFiles.length; i++) {
var j = filename.compareTo(srcFiles[i]);
// the jelly parser can't have a greater than or less than sign or ampersand
in the script section?
if (j != 0) if (j != Math.abs(j)) filename = srcFiles[i];
}
project.setProperty(file, filename);
]] /script
!-- Get the last modification time of the last file --
echo message=Last file (/var/log/${file})/
u:file name=/var/log/${file} var=lastfile/
j:set var=mseconds value=${lastfile.lastModified()}/
!-- transform from seconds to regular time --
script language=javascript ![CDATA[
importClass(java.lang.Long);
importClass(java.text.SimpleDateFormat);
var formatter = new java.text.SimpleDateFormat(-MM-dd HH:mm);
project.setProperty(from, formatter.format(new
java.util.Date(Long.parseLong(project.getProperty(mseconds);
]] /script
echo message=The last file was modified at ${from}/
/j:if
/goal
--END--
I've looked through ant, jelly, and maven documentation, but I couldn't find an easier
way to do this. Any ideas?
-jake
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