c849e72c0b
The command 'nl -b n' should output no line numbers, just some spaces as a placeholder followed by the actual file content. Add tests for line numbering by cat and nl. The correct results were obtained from coreutils. function old new delta print_numbered_lines 152 157 +5 .rodata 182456 182453 -3 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 5/-3) Total: 2 bytes Signed-off-by: Ron Yorston <rmy@pobox.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
38 lines
736 B
C
38 lines
736 B
C
/* vi: set sw=4 ts=4: */
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/*
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* Copyright (C) 2017 Denys Vlasenko <vda.linux@googlemail.com>
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*
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* Licensed under GPLv2, see file LICENSE in this source tree.
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*/
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//kbuild:lib-y += print_numbered_lines.o
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#include "libbb.h"
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int FAST_FUNC print_numbered_lines(struct number_state *ns, const char *filename)
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{
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FILE *fp = fopen_or_warn_stdin(filename);
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unsigned N;
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char *line;
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if (!fp)
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return EXIT_FAILURE;
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N = ns->start;
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while ((line = xmalloc_fgetline(fp)) != NULL) {
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if (ns->all
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|| (ns->nonempty && line[0])
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) {
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printf("%*u%s", ns->width, N, ns->sep);
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N += ns->inc;
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} else if (ns->empty_str)
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fputs(ns->empty_str, stdout);
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puts(line);
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free(line);
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}
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ns->start = N;
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fclose(fp);
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return EXIT_SUCCESS;
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}
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