You could use lex to do this. The O'Reilly book on lex & yacc (Levine,
Mason and Brown) contains the following
lex sample to count words and lines in a file. (I haven't run it but I
assume it works).
%{
unsigned charCount = 0, wordCount = 0, lineCount = 0;
%}
word [^ \t\n]+
eol \n
%%
{word} { wordCount++; charCount += yyleng; }
{eol} { charCount++; lineCount++; }
. charCount++;
%%
main(argc,argv)
int argc;
char **argv;
{
if (argc > 1) {
FILE *file;
file = fopen(argv[1], "r");
if (!file) {
fprintf(stderr,"could not open %s\n",argv[1]);
exit(1);
}
yyin = file;
}
yylex();
printf("%d %d %d\n",charCount, wordCount, lineCount);
return 0;
}
Novak Elliott <[EMAIL PROTECTED]> on 07/28/98 04:44:12 AM
Please respond to Novak Elliott <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
cc: (bcc: Anthony Simon/THP)
Subject: unix wc
hi,
does anyone know where to find the source code for wc ? All i
really want is a nice utility function that takes a string or file pointer
as an argument and returns the number of lines in the file (although it
might be useful to also pass it a flag indicating to return number of
words, lines, etc).
thanx in advance,
novak.
