usr.bin/grep/util.c

82 static void printline_metadata(struct str *line, int sep);
210 	/* Print the matching line, but only if not quiet/binary */
241 		 * line being rotated out, then go ahead and increment
242 		 * last_outed to signify a gap between context/match.
258 	 * line-by-line basis, setting up a `struct str` as needed.
264 		/* Count the matches if we have a match limit */
278  * Opens a file and processes it.  Each file is processed line-by-line
335 		 * not going to be doing per-line statistics because of the
338 		/* Reset per-line statistics */
365 		/* Halt processing if we hit our match limit */
440 			/* We only needed to know if we match or not */
455  * Processes a line comparing it with the specified patterns.  Each pattern
457  * match, which is necessary to colorize the output and to count the
477 	 * Emtpy patterns trivially match every line except in the -w and -x
478 	 * cases.  For -w (whole-word) cases, we only match if the first
479 	 * character isn't a word-character.  For -x (whole-line) cases, we only
480 	 * match if the line is empty.
494 		 * If we don't have any other patterns, we really don't match.
508 	/* Loop to process the whole line */
534 			/* Check for full match */
538 			/* Check for whole word match */
561 				 * the earliest match. This allows the pattern
562 				 * to  match later on in the line and possibly
563 				 * still match a whole word.
579 			 * Replace previous match if the new one is earlier
608 		 * Advance to just past the start of the earliest match, try
609 		 * again just in case we still have a chance to match later in
630 			/* Zero-length match -- advance one more so we don't get stuck */
695  * Print an entire line as-is, there are no inline matches to consider. This is
698 void grep_printline(struct str *line, int sep) {
699 	printline_metadata(line, sep);
700 	fwrite(line->dat, line->len, 1, stdout);
705 printline_metadata(struct str *line, int sep)
712 			fputs(line->file, stdout);
715 			printf("%s", line->file);
722 		printf("%d", line->line_no);
728 		printf("%lld", (long long)(line->off + line->boff));
736  * Prints a matching line according to the command line options.
743 	regmatch_t match;
753 		/* Only print metadata once per line if --color */
757 			match = pc->matches[i];
759 			if (match.rm_so == match.rm_eo)
762 			 * Metadata is printed on a per-line basis, so every
763 			 * match gets file metadata with the -o flag.
766 				pc->ln.boff = match.rm_so;
769 				fwrite(pc->ln.dat + a, match.rm_so - a, 1,
773 			fwrite(pc->ln.dat + match.rm_so,
774 			    match.rm_eo - match.rm_so, 1, stdout);
777 			a = match.rm_eo;