From 78e51a8c6678b6e3dff3d619aa786669f531f4bc Mon Sep 17 00:00:00 2001 From: rsc Date: Fri, 14 Jan 2005 03:45:44 +0000 Subject: checkpoint --- man/man1/lex.html | 110 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 110 insertions(+) create mode 100644 man/man1/lex.html (limited to 'man/man1/lex.html') diff --git a/man/man1/lex.html b/man/man1/lex.html new file mode 100644 index 00000000..e0f84d1e --- /dev/null +++ b/man/man1/lex.html @@ -0,0 +1,110 @@ + +lex(1) - Plan 9 from User Space + + + + +
+
+
LEX(1)LEX(1) +
+
+

NAME
+ +
+ + lex – generator of lexical analysis programs
+ +
+

SYNOPSIS
+ +
+ + lex [ −tvn9 ] [ file ... ]
+ +
+

DESCRIPTION
+ +
+ + Lex generates programs to be used in simple lexical analysis of + text. The input files (standard input default) contain regular + expressions to be searched for and actions written in C to be + executed when expressions are found. +
+ + A C source program, lex.yy.c is generated. This program, when + run, copies unrecognized portions of the input to the output, + and executes the associated C action for each regular expression + that is recognized. +
+ + The options have the following meanings.
+ −t    Place the result on the standard output instead of in file lex.yy.c.
+ −v    Print a one-line summary of statistics of the generated analyzer.
+ −n    Opposite of −v; −n is default.
+ −9    Adds code to be able to compile through the native C compilers.
+ +
+

EXAMPLES
+ +
+ + This 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');
+ [ ]+$
+ [ ]+ putchar(' ');
+ +
+

FILES
+ +
+ + lex.yy.c             output
+ /sys/lib/lex/ncform   template
+ +
+

SEE ALSO
+ +
+ + yacc(1), sed(1)
+ M. E. Lesk and E. Schmidt, ‘LEX--Lexical Analyzer Generator’, Unix + Research System Programmer’s Manual, Tenth Edition, Volume 2.
+ +
+

SOURCE
+ +
+ + /usr/local/plan9/src/cmd/lex
+ +
+

BUGS
+ +
+ + Cannot handle UTF. +
+ + The asteroid to kill this dinosaur is still in orbit.
+ +
+ +

 +
+
+ + +
+
+
+Space Glenda +
+
+ + -- cgit v1.2.3