/**
   ToggleHeaderSource.bsh
   by Alan Ezust
   
   alan dot ezust at gmail dot com
   2005-11-09
   
   version 0.4 - works with c and cxx files too. 

    A jedit beanshell macro that toggles your current buffer
    between  the header file (.h) and the source file (.cpp).

    Enables you to switch the current text
    buffer between c++ header and sourcecode
    file. If the file does not already exist, it opens a buffer
    of that name for you (!).
    */

String[] sourceExtensions = new String[]{"cpp", "c", "cxx" };

String defaultSourceExtension = "cpp";

String getSourceFile(String baseName)
{
    int numExt = sourceExtensions.length;
    String tryFile = null;
    for (int i=numExt-1; i>=0; --i) 
    {
        String ext = sourceExtensions[i];
        String tryFile = baseName + "." + ext;
        File f = new File(tryFile);
        if (f.canRead()) return f.getPath();
    }              
    return baseName + "." + defaultSourceExtension;
}

boolean isSourceFile(String extension) 
{
    for (int i=0; i<sourceExtensions.length; ++i) {
        if (extension.equals(sourceExtensions[i])) return true;
    }
    return false;
}

void toggleHeaderSource()
{

    String currentFile = buffer.getPath();
    int pos = currentFile.lastIndexOf('.');
    String extension = currentFile.substring(pos+1);
    String baseName = currentFile.substring(0, pos);
    if (isSourceFile(extension)) 
    {
        jEdit.openFile(view, baseName + ".h"); 
    }
    else if (extension.equals("h")) {
        String sourceFile = getSourceFile(baseName);
        jEdit.openFile(view, sourceFile);         
    }
}

toggleHeaderSource();