String getStandardLengthString(String baseString) {
		int baseWidth = stringWidth(baseString);
		int spaceWidth = stringWidth(" ");
		int paddingSize = (140 - baseWidth) / spaceWidth;
		if (paddingSize <= 0) {
			return baseString;
		}
		StringBuilder buf = new StringBuilder(baseString);
		for (int i = 0; i < paddingSize; i++) {
			buf.append(" ");
		}
		return buf.toString();
	}
Get the signed-ness to be supported.
@return true if signed, else false if unsigned
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/equate/AbstractConvertAction.java