Script to create a list: <Method name> <Number of times called> for a specific project directory

Here is a simple java script that provides the output I was looking for. By setting up the two REGEX at the top of the file, it can be used to generate statistics on the occurrence of other patterns.

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.regex.Pattern;

public class MethodCallCount {
    // This is the regex which is applied to each line to test if there is a method call on it.
    private static String REGEX_METHODCALL = "(?:\\s*)([a-zA-Z0-9_]+)\\((.*)"; 
    // Only looks in files with .c extention
    private static String REGEX_FILEEXTS = ".*.c";
    private static boolean VERBOSE_OUTPUT = false;
    private static Map<String,Integer> patternMap = new HashMap<String,Integer>();

    // Process all files and directories under dir
    public static void visitAllDirsAndFiles(File dir) {

        if( !dir.isDirectory()) {
            if( dir.getName().matches(REGEX_FILEEXTS) ) {
                if( VERBOSE_OUTPUT ) { System.out.println("Processing File: " + dir.getName() ); }
                processFile(dir);
            }
        }
        else if( !dir.getName().equals(".svn") ) {
            String[] children = dir.list();
            for (int i=0; i<children.length; i++) {
                visitAllDirsAndFiles(new File(dir, children[i]));
            }
        }
    }

    // Process only directories under dir
    public static void visitAllDirs(File dir) {
        if (dir.isDirectory()) {
            processFile(dir);

            String[] children = dir.list();
            for (int i=0; i<children.length; i++) {
                visitAllDirs(new File(dir, children[i]));
            }
        }
    }

    // Process only files under dir
    public static void visitAllFiles(File dir) {
        if (dir.isDirectory()) {
            String[] children = dir.list();
            for (int i=0; i<children.length; i++) {
                visitAllFiles(new File(dir, children[i]));
            }
        } else {
            processFile(dir);
        }
    }

    public static void processMethod( String pMethod ) {
        if( VERBOSE_OUTPUT ) { System.out.println("found: " + pMethod); }
        if( patternMap.containsKey( pMethod ) ) {
            Integer cnt = patternMap.get( pMethod );
            cnt = cnt + 1;
            patternMap.put(pMethod, cnt );
        }
        else {
            patternMap.put( pMethod.toString(), 1);
        }       
    }


    public static void processLine( String pLine ) {
        Pattern methodMatcher = Pattern.compile( REGEX_METHODCALL );
        java.util.regex.Matcher matcher = methodMatcher.matcher( pLine );

        if( matcher.matches() ) {
            if( VERBOSE_OUTPUT ) { System.out.println("processing " + matcher.group(1) ); }
            processMethod( matcher.group(1) );                  
            processLine( matcher.group(2) );
        }
    }

    public static void processFile( File pFile ) {
        BufferedReader fin;
        try {
            fin = new BufferedReader( new InputStreamReader( new FileInputStream(pFile) ) );
            String l = null;
            while( (l=fin.readLine()) != null ) {
                processLine( l );
            }
        } 
        catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }       
    }

    /**
     * @param args[0] is the directory to run this on.  Otherwise current directory is used.
     */
    public static void main(String[] args) {

        String searchDirPath = System.getProperty("user.dir");
        if( args.length > 0 ) {
            searchDirPath = args[0];
        }
        else {
            System.out.println("No argument specified... searching for *.map in: " + searchDirPath );
        }

        File searchDir = new File( searchDirPath );
        visitAllDirsAndFiles(searchDir);

        // Print Stats.
        int callCnt = 0;
        Set<String> patternSet = patternMap.keySet();
        for( String p : patternSet ) {
            System.out.println( patternMap.get(p) + "\t" + p );
            callCnt += patternMap.get(p);
        }
        System.out.println("Unique Methods: " + patternMap.size());
        System.out.println("Calls Detected: " + callCnt );
        System.out.println("Copy and paste output above into excel and then sort columns");
        System.out.println("DONE.");
    }
}