Building with xml and errors with UTF-8

[andreasdc]

Hello,
I'm trying to make a unique build.xml file to quickly build all my projects, but when some files are encoded with UTF-8 (they have special characters) this file can't read it. I find impossible encoding whole project with UTF-8, is there any way to change that?
With this there was errors on special characters

<?xml version="1.0" encoding="UTF-8"?>
<project name="generic-build" default="jar" basedir=".">
    <!-- Load project-specific properties if they exist -->
    <property file="${project.basedir}/project.properties"/>

    <!-- Property definitions with default values -->
    <property name="src.dir" value="${project.basedir}/src"/>
    <property name="build.dir" value="${project.basedir}/bin"/>
    <property name="jar.name" value="${project.name}.jar"/>
    <property name="workspace.dir" value="${project.basedir}/.."/>

    <target name="clean">
        <echo message="Cleaning build directory..."/>
    </target>

    <target name="compile">
        <echo message="Compiling source files from ${src.dir} to ${build.dir}..."/>
        <mkdir dir="${build.dir}"/>
        <javac srcdir="${src.dir}" destdir="${build.dir}" includeantruntime="false" encoding="UTF-8"/>
    </target>

    <target name="jar" depends="compile">
        <echo message="Creating JAR file at ${workspace.dir}/${jar.name} from ${build.dir}..."/>
        <jar destfile="${workspace.dir}/${jar.name}" basedir="${build.dir}"/>
        <echo message="JAR file created at ${workspace.dir}/${jar.name}"/>
    </target>
</project>

and I went to that, but there were different errors, is there a better way? Thanks.

<?xml version="1.0" encoding="UTF-8"?>
<project name="generic-build" default="jar" basedir=".">
    <!-- Load project-specific properties if they exist -->
    <property file="${project.basedir}/project.properties"/>

    <!-- Property definitions with default values -->
    <property name="src.dir" value="${project.basedir}/src"/>
    <property name="build.dir" value="${project.basedir}/bin"/>
    <property name="jar.name" value="${project.name}.jar"/>
    <property name="workspace.dir" value="${project.basedir}/.."/>

    <target name="clean">
        <echo message="Cleaning build directory..."/>
        <delete dir="${build.dir}"/>
    </target>

    <target name="compile" depends="clean">
        <mkdir dir="${build.dir}"/>
        <echo message="Detecting encoding of source files..."/>

        <!-- Detect encoding of each file -->
        <script language="groovy">
            def detectEncoding(file) {
                def utf8Bom = [0xEF, 0xBB, 0xBF] as byte[]
                def firstBytes = new byte[3]
                new File(file).withInputStream { it.read(firstBytes) }
                return firstBytes == utf8Bom ? 'UTF-8' : 'windows-1250'
            }

            def compileFiles(srcDir, buildDir) {
                def srcFiles = new File(srcDir).eachFileRecurse { file ->
                    if (file.name.endsWith('.java')) {
                        def encoding = detectEncoding(file.path)
                        ant.javac(srcdir: file.parent, destdir: buildDir, includeantruntime: false, encoding: encoding, failonerror: false) {
                            compilerarg(line: '-Xmaxerrs 10')
                            include(name: file.name)
                        }
                    }
                }
            }

            compileFiles("${project.basedir}/src", "${project.basedir}/bin")
        </script>

        <!-- Check if there were any compilation errors -->
        <fail message="Compilation failed. Check the output for details." unless="compile.success"/>
    </target>

    <target name="jar" depends="compile">
        <echo message="Creating JAR file at ${workspace.dir}/${jar.name} from ${build.dir}..."/>
        <jar destfile="${workspace.dir}/${jar.name}" basedir="${build.dir}"/>
        <echo message="JAR file created at ${workspace.dir}/${jar.name}"/>
    </target>
</project>

[iloveeclipse]

I find impossible encoding whole project with UTF-8, is there any way to change that?

Sure, you can set file encoding in Eclipse per file/folder.
But your problem is not that you can't change it per file/folder, but that your first ant file assumes UTF-8 by default.

You seem to address this issue in the second build file, so you probably want to know how if there is a better way one can write an ant file that deals with different file encodings in the source tree?

This is a general Java question, not related to JDT, so I would recommend to ask it on stack overflow.

[andreasdc]

Is there more simple way to build the project like that? Or use similar technique that Eclipse uses when building?