lex \- generator of lexical analysis programs
generates programs to be used in simple lexical analyis of text.
contain regular expressions
to be searched for, and actions written in C to be executed when
A C source program, `lex.yy.c' is generated, to be compiled thus:
This program, when run, copies unrecognized portions of
and executes the associated
C action for each regular expression that is recognized.
program converts upper case to lower,
removes blanks at the end of lines,
and replaces multiple blanks by single blanks.
[A\-Z] putchar(yytext[0]+\'a\'\-\'A\');
The options have the following meanings.
Place the result on the standard output instead of in file
Print a one-line summary of statistics of the generated analyzer.
`Faster' compilation: don't bother to pack
the resulting tables; limited to small programs.
M. E. Lesk and E. Schmidt,
.I LEX \- Lexical Analyzer Generator