public static String replace()

in src/main/java/org/apache/sling/provisioning/model/ModelResolveUtility.java [50:82]

• 32 lines of code
• 13 McCabe index (conditional complexity)

    public static String replace(final Feature feature, final String v, final VariableResolver resolver) {
        if ( v == null ) {
            return null;
        }
        String msg = v;
        // check for variables
        int pos = -1;
        int start = 0;
        while ( ( pos = msg.indexOf('$', start) ) != -1 ) {
            boolean escapedVariable = (pos > 0 && msg.charAt(pos - 1) == '\\');
            if ( msg.length() > pos && msg.charAt(pos + 1) == '{' && (pos == 0 || msg.charAt(pos - 1) != '$') ) {
                final int endPos = msg.indexOf('}', pos);
                if ( endPos != -1 ) {
                    final String name = msg.substring(pos + 2, endPos);
                    final String value;
                    if (escapedVariable) {
                        value = "\\${" + name + "}";
                    } else if ( resolver != null ) {
                        value = resolver.resolve(feature, name);
                    } else {
                        value = feature.getVariables().get(name);
                    }
                    if ( value == null ) {
                        throw new IllegalArgumentException("Unknown variable: " + name);
                    }
                    int startPos = escapedVariable ? pos - 1 : pos;
                    msg = msg.substring(0, startPos) + value + msg.substring(endPos + 1);
                }
            }
            start = pos + 1;
        }
        return msg;
    }