static boolean matchPath()

in src/main/org/apache/tools/ant/types/selectors/SelectorUtils.java [211:310]
87 lines of code
27 McCabe index (conditional complexity)

    static boolean matchPath(String[] tokenizedPattern, String[] strDirs,
                             boolean isCaseSensitive) {
        int patIdxStart = 0;
        int patIdxEnd = tokenizedPattern.length - 1;
        int strIdxStart = 0;
        int strIdxEnd = strDirs.length - 1;

        // up to first '**'
        while (patIdxStart <= patIdxEnd && strIdxStart <= strIdxEnd) {
            String patDir = tokenizedPattern[patIdxStart];
            if (patDir.equals(DEEP_TREE_MATCH)) {
                break;
            }
            if (!match(patDir, strDirs[strIdxStart], isCaseSensitive)) {
                return false;
            }
            patIdxStart++;
            strIdxStart++;
        }
        if (strIdxStart > strIdxEnd) {
            // String is exhausted
            for (int i = patIdxStart; i <= patIdxEnd; i++) {
                if (!tokenizedPattern[i].equals(DEEP_TREE_MATCH)) {
                    return false;
                }
            }
            return true;
        }
        if (patIdxStart > patIdxEnd) {
            // String not exhausted, but pattern is. Failure.
            return false;
        }

        // up to last '**'
        while (patIdxStart <= patIdxEnd && strIdxStart <= strIdxEnd) {
            String patDir = tokenizedPattern[patIdxEnd];
            if (patDir.equals(DEEP_TREE_MATCH)) {
                break;
            }
            if (!match(patDir, strDirs[strIdxEnd], isCaseSensitive)) {
                return false;
            }
            patIdxEnd--;
            strIdxEnd--;
        }
        if (strIdxStart > strIdxEnd) {
            // String is exhausted
            for (int i = patIdxStart; i <= patIdxEnd; i++) {
                if (!tokenizedPattern[i].equals(DEEP_TREE_MATCH)) {
                    return false;
                }
            }
            return true;
        }

        while (patIdxStart != patIdxEnd && strIdxStart <= strIdxEnd) {
            int patIdxTmp = -1;
            for (int i = patIdxStart + 1; i <= patIdxEnd; i++) {
                if (tokenizedPattern[i].equals(DEEP_TREE_MATCH)) {
                    patIdxTmp = i;
                    break;
                }
            }
            if (patIdxTmp == patIdxStart + 1) {
                // '**/**' situation, so skip one
                patIdxStart++;
                continue;
            }
            // Find the pattern between padIdxStart & padIdxTmp in str between
            // strIdxStart & strIdxEnd
            int patLength = (patIdxTmp - patIdxStart - 1);
            int strLength = (strIdxEnd - strIdxStart + 1);
            int foundIdx = -1;
            strLoop:
            for (int i = 0; i <= strLength - patLength; i++) {
                for (int j = 0; j < patLength; j++) {
                    String subPat = tokenizedPattern[patIdxStart + j + 1];
                    String subStr = strDirs[strIdxStart + i + j];
                    if (!match(subPat, subStr, isCaseSensitive)) {
                        continue strLoop;
                    }
                }
                foundIdx = strIdxStart + i;
                break;
            }
            if (foundIdx == -1) {
                return false;
            }

            patIdxStart = patIdxTmp;
            strIdxStart = foundIdx + patLength;
        }

        for (int i = patIdxStart; i <= patIdxEnd; i++) {
            if (!DEEP_TREE_MATCH.equals(tokenizedPattern[i])) {
                return false;
            }
        }
        return true;
    }