For sorting Chinese language text, I want to convert Chinese characters to Pinyin, properly separating each Chinese character and grouping successive characters together.
While @JUST MY correct OPINION's answer addresses some of the difficulties of converting characters into pinyin, it is not an impossible problem to solve.
I have written a library (pinyinify) that solves this task with decent accuracy. Even though there is not a one-to-one mapping between characters and pinyin, my library can usually decide which pronunciation is correct. For example, "我受不了了" correctly converts to "wǒ shòubùliǎo le", with two different pronunciations of 了.
My approach to solving the problem is pretty simple: