Ejemplo n.º 1
0
/*
 * Opens a file and processes it.  Each file is processed line-by-line
 * passing the lines to procline().
 */
int
procfile(const char *fn)
{
	struct file *f;
	struct stat sb;
	struct str ln;
	mode_t s;
	int c, t;

	mcount = mlimit;

	if (strcmp(fn, "-") == 0) {
		fn = label != NULL ? label : getstr(1);
		f = grep_open(NULL);
	} else {
		if (!stat(fn, &sb)) {
			/* Check if we need to process the file */
			s = sb.st_mode & S_IFMT;
			if (s == S_IFDIR && dirbehave == DIR_SKIP)
				return (0);
			if ((s == S_IFIFO || s == S_IFCHR || s == S_IFBLK
				|| s == S_IFSOCK) && devbehave == DEV_SKIP)
					return (0);
		}
		f = grep_open(fn);
	}
	if (f == NULL) {
		file_err = true;
		if (!sflag)
			warn("%s", fn);
		return (0);
	}

	ln.file = grep_malloc(strlen(fn) + 1);
	strcpy(ln.file, fn);
	ln.line_no = 0;
	ln.len = 0;
	linesqueued = 0;
	tail = 0;
	ln.off = -1;

	for (c = 0;  c == 0 || !(lflag || qflag); ) {
		ln.off += ln.len + 1;
		if ((ln.dat = grep_fgetln(f, &ln.len)) == NULL || ln.len == 0) {
			if (ln.line_no == 0 && matchall)
				exit(0);
			else
				break;
		}
		if (ln.len > 0 && ln.dat[ln.len - 1] == '\n')
			--ln.len;
		ln.line_no++;

		/* Return if we need to skip a binary file */
		if (f->binary && binbehave == BINFILE_SKIP) {
			grep_close(f);
			free(ln.file);
			free(f);
			return (0);
		}
		/* Process the file line-by-line */
		if ((t = procline(&ln, f->binary)) == 0 && Bflag > 0) {
			enqueue(&ln);
			linesqueued++;
		}
		c += t;
		if (mflag && mcount <= 0)
			break;
	}
	if (Bflag > 0)
		clearqueue();
	grep_close(f);

	if (cflag) {
		if (!hflag)
			printf("%s:", ln.file);
		printf("%u\n", c);
	}
	if (lflag && !qflag && c != 0)
		printf("%s%c", fn, nullflag ? 0 : '\n');
	if (Lflag && !qflag && c == 0)
		printf("%s%c", fn, nullflag ? 0 : '\n');
	if (c && !cflag && !lflag && !Lflag &&
	    binbehave == BINFILE_BIN && f->binary && !qflag)
		printf(getstr(8), fn);

	free(ln.file);
	free(f);
	return (c);
}
Ejemplo n.º 2
0
int
procfile(char *fn)
{
	str_t ln;
	file_t *f;
	int c, t, z, nottext;

	if (fn == NULL) {
		fn = "(standard input)";
		f = grep_fdopen(STDIN_FILENO, "r");
	} else {
		f = grep_open(fn, "r");
	}
	if (f == NULL) {
		file_err = 1;
		if (!sflag)
			warn("%s", fn);
		return 0;
	}

	nottext = grep_bin_file(f);
	if (nottext && binbehave == BIN_FILE_SKIP) {
		grep_close(f);
		return 0;
	}

	ln.file = fn;
	ln.line_no = 0;
	ln.len = 0;
	linesqueued = 0;
	tail = 0;
	ln.off = -1;

	if (Bflag > 0)
		initqueue();
	for (c = 0;  c == 0 || !(lflag || qflag); ) {
		ln.off += ln.len + 1;
		if ((ln.dat = grep_fgetln(f, &ln.len)) == NULL)
			break;
		if (ln.len > 0 && ln.dat[ln.len - 1] == '\n')
			--ln.len;
		ln.line_no++;

		z = tail;

		if ((t = procline(&ln, nottext)) == 0 && Bflag > 0 && z == 0) {
			enqueue(&ln);
			linesqueued++;
		}
		c += t;
	}
	if (Bflag > 0)
		clearqueue();
	grep_close(f);

	if (cflag) {
		if (!hflag)
			printf("%s:", ln.file);
		printf("%u\n", c);
	}
	if (lflag && c != 0)
		printf("%s\n", fn);
	if (Lflag && c == 0)
		printf("%s\n", fn);
	if (c && !cflag && !lflag && !Lflag &&
	    binbehave == BIN_FILE_BIN && nottext && !qflag)
		printf("Binary file %s matches\n", fn);

	return c;
}