| %{ |
| // Copyright (c) 2001-2009 Hartmut Kaiser |
| // |
| // Distributed under the Boost Software License, Version 1.0. (See accompanying |
| // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| |
| #include <boost/timer.hpp> |
| #if defined(_WIN32) |
| #include <io.h> |
| #endif |
| #define ID_WORD 1000 |
| #define ID_EOL 1001 |
| #define ID_CHAR 1002 |
| %} |
| |
| %% |
| [^ \t\n]+ { return ID_WORD; } |
| \n { return ID_EOL; } |
| . { return ID_CHAR; } |
| %% |
| |
| bool count(int tok, int* c, int* w, int* l) |
| { |
| switch (tok) { |
| case ID_WORD: ++*w; *c += yyleng; break; |
| case ID_EOL: ++*l; ++*c; break; |
| case ID_CHAR: ++*c; break; |
| default: |
| return false; |
| } |
| return true; |
| } |
| |
| int main(int argc, char* argv[]) |
| { |
| int tok = EOF; |
| int c = 0, w = 0, l = 0; |
| yyin = fopen(1 == argc ? "word_count.input" : argv[1], "r"); |
| if (NULL == yyin) { |
| fprintf(stderr, "Couldn't open input file!\n"); |
| exit(-1); |
| } |
| |
| boost::timer tim; |
| do { |
| tok = yylex(); |
| if (!count(tok, &c, &w, &l)) |
| break; |
| } while (EOF != tok); |
| printf("lines: %d, words: %d, characters: %d\n", l, w, c); |
| fclose(yyin); |
| return 0; |
| } |
| |
| extern "C" int yywrap() |
| { |
| return 1; |
| } |
| |