HPC SOFTWARE – TEXT TOOLS AND SOFTWARE
Flex
| Flex is a tool for generating scanners. A scanner, sometimes called a tokenizer, is a program which recognizes lexical patterns in text. The flex program reads user-specified input files, or its standard input if no file names are given, for a description of a scanner to generate. The description is in the form of pairs of regular expressions and C code, called rules. Flex generates a C source file named, “lex.yy.c”, which defines the function yylex(). The file “lex.yy.c” can be compiled and linked to produce an executable. When the executable is run, it analyzes its input for occurrences of text matching the regular expressions for each rule. Whenever it finds a match, it executes the corresponding C code. [Flex Website November2014] | ||
| Available versions and module name2.5.39 (flex-2.5.39 or flex) | Default version available2.5.39 | Website https://github.com/westes/flex |
If you would like to use the older versions of the compilers, or other available software, you can simply “unload” the current module and load the older version. See Software Module Information webpage.