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/* vi: set sw=4 ts=4: */
/*
* Copyright (C) 2017 Denys Vlasenko <vda.linux@googlemail.com>
*
* Licensed under GPLv2, see file LICENSE in this source tree.
*/
//kbuild:lib-y += print_numbered_lines.o
#include "libbb.h"
int FAST_FUNC print_numbered_lines(struct number_state *ns, const char *filename)
{
FILE *fp = fopen_or_warn_stdin(filename);
unsigned N;
char *line;
if (!fp)
return EXIT_FAILURE;
N = ns->start;
while ((line = xmalloc_fgetline(fp)) != NULL) {
if (ns->all
|| (ns->nonempty && line[0])
) {
printf("%*u%s", ns->width, N, ns->sep);
N += ns->inc;
} else if (ns->empty_str)
fputs(ns->empty_str, stdout);
puts(line);
free(line);
}
ns->start = N;
fclose(fp);
return EXIT_SUCCESS;
}
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