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