Man page - flex(1)

Packages contains this manual

Package: flex
apt-get install flex

Manuals in package:

Documentations in package:

flex

Available languages:

en pl vi da sv ja ro sr

Manual

FLEX

NAME
SYNOPSIS
DESCRIPTION
Table Compression:
Debugging:
FILES
Scanner behavior:
Generated code:
Miscellaneous:
SEE ALSO

NAME

flex - the fast lexical analyser generator

SYNOPSIS

flex [ OPTIONS ] [ FILE ]...

DESCRIPTION

Generates programs that perform pattern-matching on text.

Table Compression:

-Ca , --align

trade off larger tables for better memory alignment

-Ce , --ecs

construct equivalence classes

	-Cf		do not compress tables; use -f representation
	-CF		do not compress tables; use -F representation

-Cm , --meta-ecs

construct meta-equivalence classes

-Cr , --read

use read() instead of stdio for scanner input

-f , --full

generate fast, large scanner. Same as -Cfr

-F , --fast

use alternate table representation. Same as -CFr

-Cem

default compression (same as --ecs --meta-ecs )

Debugging:

-d , --debug

enable debug mode in scanner

-b , --backup

write backing-up information to lex.backup

-p , --perf-report

write performance report to stderr

-s , --nodefault

suppress default rule to ECHO unmatched text

-T , --trace

flex should run in trace mode

-w , --nowarn

do not generate warnings

-v , --verbose

write summary of scanner statistics to stdout

--hex

use hexadecimal numbers instead of octal in debug outputs

FILES

-o , --outfile = FILE

specify output filename

-S , --skel = FILE

specify skeleton file

-t , --stdout

write scanner on stdout instead of lex.yy.c

--yyclass = NAME

name of C++ class

--header-file = FILE

create a C header file in addition to the scanner

--tables-file [= FILE ] write tables to FILE

--backup-file = FILE

write backing-up information to FILE

Scanner behavior:

-7 , --7bit

generate 7-bit scanner

-8 , --8bit

generate 8-bit scanner

-B , --batch

generate batch scanner (opposite of -I )

-i , --case-insensitive

ignore case in patterns

-l , --lex-compat

maximal compatibility with original lex

-X , --posix-compat

maximal compatibility with POSIX lex

-I , --interactive

generate interactive scanner (opposite of -B )

--yylineno

track line count in yylineno

Generated code:

-+, --c ++

generate C++ scanner class

-Dmacro [= defn ]

#define macro defn (default defn is ’1’)

-L , --noline

suppress #line directives in scanner

-P , --prefix = STRING

use STRING as prefix instead of "yy"

-R , --reentrant

generate a reentrant C scanner

--bison-bridge

scanner for bison pure parser.

--bison-locations

include yylloc support.

--stdinit

initialize yyin/yyout to stdin/stdout

--nounistd

do not include <unistd.h>

--noFUNCTION

do not generate a particular FUNCTION

Miscellaneous:

	-c		do-nothing POSIX option
	-n		do-nothing POSIX option
	-?

-h , --help

produce this help message

-V , --version

report flex version