public static String removeFTLCopyrightComment()

in freemarker-docgen-core/src/main/java/org/freemarker/docgen/core/PrintTextWithDocgenSubstitutionsDirective.java [863:909]

43 lines of code
12 McCabe index (conditional complexity)


    public static String removeFTLCopyrightComment(String ftl) {
        int copyrightPartIdx = ftl.indexOf("Licensed to the Apache Software Foundation");
        if (copyrightPartIdx == -1) {
            return ftl;
        }

        final int commentFirstIdx;
        final boolean squareBracketTagSyntax;
        {
            String ftlBeforeCopyright = ftl.substring(0, copyrightPartIdx);
            int abCommentStart = ftlBeforeCopyright.lastIndexOf("<#--");
            int sbCommentStart = ftlBeforeCopyright.lastIndexOf("[#--");
            squareBracketTagSyntax = sbCommentStart > abCommentStart;
            commentFirstIdx = squareBracketTagSyntax ? sbCommentStart : abCommentStart;
            if (commentFirstIdx == -1) {
                throw new AssertionError("Can't find copyright comment start");
            }
        }

        final int commentLastIdx;
        {
            int commentEndStart = ftl.indexOf(squareBracketTagSyntax ? "--]" : "-->", copyrightPartIdx);
            if (commentEndStart == -1) {
                throw new AssertionError("Can't find copyright comment end");
            }
            commentLastIdx = commentEndStart + 2;
        }

        final int afterCommentNLChars;
        if (commentLastIdx + 1 < ftl.length()) {
            char afterCommentChar = ftl.charAt(commentLastIdx + 1);
            if (afterCommentChar == '\n' || afterCommentChar == '\r') {
                if (afterCommentChar == '\r' && commentLastIdx + 2 < ftl.length()
                        && ftl.charAt(commentLastIdx + 2) == '\n') {
                    afterCommentNLChars = 2;
                } else {
                    afterCommentNLChars = 1;
                }
            } else {
                afterCommentNLChars = 0;
            }
        } else {
            afterCommentNLChars = 0;
        }

        return ftl.substring(0, commentFirstIdx) + ftl.substring(commentLastIdx + afterCommentNLChars + 1);
    }