1 /* Somewhat faster "wc" tool: match more text with each rule */ 2 3 ws [ \t] 4 nonws [^ \t\n] 5 word {ws}*{nonws}+ 6 7 %% 8 int cc = 0, wc = 0, lc = 0; 9 10 {word}{ws}* cc += yyleng; ++wc; 11 {word}{ws}*\n cc += yyleng; ++wc; ++lc; 12 13 {ws}+ cc += yyleng; 14 15 \n+ cc += yyleng; lc += yyleng; 16 17 <<EOF>> { 18 printf( "%8d %8d %8d\n", lc, wc, cc ); 19 yyterminate(); 20 } 21