You might be interested in Andrew Bannister's research on computer analysis of the Quran. He wrote a book on it [1], and there's also this paper which gives a high-level overview [2].

[1] http://www.amazon.com/Oral-Formulaic-Study-Quran-Andrew-Bann...

[2] http://www.academia.edu/9490706/Retelling_the_Tale_A_Compute...