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Full Discussion: lex for Chinese character
Operating Systems Linux lex for Chinese character Post 102140 by suman_jakkula on Thursday 16th of March 2006 01:23:09 AM
Old 03-16-2006
lex for Chinese character
Hi,
I need to read one chinese char using lex. I tried using "." ( period ) for pattern matching but in vain.
Could anyone suggest me how do i proceeed.
Sample pgm: to read a chinese char in single quotes.
%{
#include <locale.h>
%}
%%
\'.\' printf("SUCCESS\n");
. printf("Failed\n");
}
%%
main()
{
setlocale(LC_ALL,"");
yylex();
}
This always prints me "Failed" message. I cannot use '.+' for matching for my application.
I can view the chinese char with locale settings on my machine. I am using linux machine . Locale set is : zh_CN.utf8.

Thank You
 

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LEARN ABOUT PLAN9

lex

LEX(1)							      General Commands Manual							    LEX(1)

NAME

       lex - generator of lexical analysis programs

SYNOPSIS

       lex [ -tvn ] [ 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.

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

       /sys/src/cmd/lex

BUGS

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

																	    LEX(1)
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