private String parseToken()

in gflog-core/src/main/java/com/epam/deltix/gflog/core/layout/template/FastDateFormat.java [224:274]

• 40 lines of code
• 14 McCabe index (conditional complexity)

    private String parseToken(final String pattern, final int[] indexRef) {
        final StringBuilder builder = new StringBuilder();

        int i = indexRef[0];
        final int length = pattern.length();

        char c = pattern.charAt(i);
        if (c >= 'A' && c <= 'Z' || c >= 'a' && c <= 'z') {
            // Scan a run of the same character, which indicates a time
            // pattern.
            builder.append(c);

            while (i + 1 < length) {
                final char peek = pattern.charAt(i + 1);
                if (peek == c) {
                    builder.append(c);
                    i++;
                } else {
                    break;
                }
            }
        } else {
            // This will identify token as text.
            builder.append('\'');

            boolean inLiteral = false;

            for (; i < length; i++) {
                c = pattern.charAt(i);

                if (c == '\'') {
                    if (i + 1 < length && pattern.charAt(i + 1) == '\'') {
                        // '' is treated as escaped '
                        i++;
                        builder.append(c);
                    } else {
                        inLiteral = !inLiteral;
                    }
                } else if (!inLiteral &&
                        (c >= 'A' && c <= 'Z' || c >= 'a' && c <= 'z')) {
                    i--;
                    break;
                } else {
                    builder.append(c);
                }
            }
        }

        indexRef[0] = i;
        return builder.toString();
    }