1. A method for creating a specific POSIX style locale source file on demand suitable for compilation in a computer, said method comprising: receiving a request submitted for said specific POSIX style locale; obtaining a plurality of localization values related to said specific POSIX style locale; determining a category of localization values within said plurality of localization values and selecting process routines dependent upon said category; selectively extracting said localization values pertaining to said category by said selected process routines; storing said extracted localization values into a memory of said computer; and assembling said extracted information into said POSIX style locale source file suitable for compilation.