How can I embed one file into another with Ant?
Question
I am developing a small web app project (ColdFusion) and I am trying to keep my project split into multiple files during development, but deploy just one file on completion.
I have references to external files, for instance:
<script type="text/javascript" src="jquery-1.2.6.pack.js"></script>
<link type="text/css" rel="stylesheet" href="project.css" />
And when I build my project, I want to have the files included and embedded within the single finished product file.
<script type="text/javascript">eval(function(p,a,c,k,e,r) [...]</script>
<style type="text/css">div{font:normal;} [...]</style>
Anyway, it doesn't look like there is a basic way for Ant to do this. Anyone know?
Solution 3
Answering my own question after a few hours of hacking...
<script language="groovy" src="build.groovy" />
and this groovy script replaces any referenced javascript or css file with the file contents itself.
f = new File("${targetDir}/index.cfm")
fContent = f.text
fContent = jsReplace(fContent)
fContent = cssReplace(fContent)
f.write(fContent)
// JS Replacement
def jsReplace(htmlFileText) {
println "Groovy: Replacing Javascript includes"
// extract all matched javascript src links
def jsRegex = /<script [^>]*src=\"([^\"]+)\"><\/script>/
def matcher = (htmlFileText =~ jsRegex)
for (i in matcher) {
// read external files in
def includeText = new File(matcher.group(1)).text
// sanitize the string for being regex replace string (dollar signs like jQuery/Prototype will screw it up)
includeText = java.util.regex.Matcher.quoteReplacement(includeText)
// weak compression (might as well)
includeText = includeText.replaceAll(/\/\/.*/, "") // remove single-line comments (like this!)
includeText = includeText.replaceAll(/[\n\r\f\s]+/, " ") // replace all whitespace with single space
// return content with embedded file
htmlFileText = htmlFileText.replaceFirst('<script [^>]*src="'+ matcher.group(1) +'"[^>]*></script>', '<script type="text/javascript">'+ includeText+'</script>');
}
return htmlFileText;
}
// CSS Replacement
def cssReplace(htmlFileText) {
println "Groovy: Replacing CSS includes"
// extract all matched CSS style href links
def cssRegex = /<link [^>]*href=\"([^\"]+)\"[^>]*>(<\/link>)?/
def matcher = (htmlFileText =~ cssRegex)
for (i in matcher) {
// read external files in
def includeText = new File(matcher.group(1)).text
// compress CSS
includeText = includeText.replaceAll(/[\n\r\t\f\s]+/, " ")
// sanitize the string for being regex replace string (dollar signs like jQuery/Prototype will screw it up)
includeText = java.util.regex.Matcher.quoteReplacement(includeText)
// return content with embedded file
htmlFileText = htmlFileText.replaceFirst('<link [^>]*href="'+ matcher.group(1) +'"[^>]*>(<\\/link>)?', '<style type=\"text/css\">'+ includeText+'</style>');
}
return htmlFileText;
}
So I guess that does it for me. It's been working pretty well, and it's extensible. Definitely not the best Groovy ever, but it's one of my first. Also, it required a few classpathed jars for it to compile. I lost track of which, but I believe it is the javax.scripting engine, groovy-engine.jar and groovy-all-1.5.6.jar
OTHER TIPS
Does this do what you want?
<property
name="filename"
value="jquery-1.2.6.pack.js"
/>
<loadfile
property="contents"
srcfile="${filename}"
/>
<replace dir=".">
<include name="index.cfm"/>
<replacetoken><![CDATA[<script type="text/javascript" src="${filename}"></script>]]></replacetoken>
<replacevalue><![CDATA[<script type="text/javascript">${contents}</script>]]></replacevalue>
</replace>
For a solution in pure ant, try the following:
<target name="replace">
<property name="js-filename" value="jquery-1.2.6.pack.js"/>
<property name="css-filename" value="project.css"/>
<loadfile property="js-file" srcfile="${js-filename}"/>
<loadfile property="css-file" srcfile="${css-filename}"/>
<replace file="input.txt">
<replacefilter token="<script type="text/javascript" src="${js-filename}"></script>" value="<script type="text/javascript">${js-file}</script>"/>
<replacefilter token="<link type="text/css" rel="stylesheet" href="${css-filename}" />" value="<style type="text/css">${css-file}</style>"/>
</replace>
</target>
I tested it, and it worked as expected. In the text to replace and the value you insert instead all characters '<', '>' and '"' should be quoted as <, > and ".