/* 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. */ //config:config NL //config: bool "nl (4.3 kb)" //config: default y //config: help //config: nl is used to number lines of files. //applet:IF_NL(APPLET(nl, BB_DIR_USR_BIN, BB_SUID_DROP)) //kbuild:lib-$(CONFIG_NL) += nl.o //usage:#define nl_trivial_usage //usage: "[OPTIONS] [FILE]..." //usage:#define nl_full_usage "\n\n" //usage: "Write FILEs to standard output with line numbers added\n" //usage: "\n -b STYLE Which lines to number - a: all, t: nonempty, n: none" //^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^TODO: support "pBRE": number only lines thatmatch regexp BRE" ////usage: "\n -f STYLE footer lines" ////usage: "\n -h STYLE header lines" ////usage: "\n -d CC use CC for separating logical pages" //usage: "\n -i N Line number increment" ////usage: "\n -l NUMBER group of NUMBER empty lines counted as one" ////usage: "\n -n FORMAT lneft justified, no leading zeros; rn or rz" ////usage: "\n -p do not reset line numbers at logical pages (huh?)" //usage: "\n -s STRING Use STRING as line number separator" //usage: "\n -v N Start from N" //usage: "\n -w N Width of line numbers" /* By default, selects -v1 -i1 -l1 -sTAB -w6 -nrn -hn -bt -fn */ #include "libbb.h" int nl_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int nl_main(int argc UNUSED_PARAM, char **argv) { struct number_state ns; const char *opt_b = "t"; enum { OPT_p = (1 << 0), }; #if ENABLE_LONG_OPTS static const char nl_longopts[] ALIGN1 = "body-numbering\0" Required_argument "b" // "footer-numbering\0" Required_argument "f" - not implemented yet // "header-numbering\0" Required_argument "h" - not implemented yet // "section-delimiter\0" Required_argument "d" - not implemented yet "line-increment\0" Required_argument "i" // "join-blank-lines\0" Required_argument "l" - not implemented yet // "number-format\0" Required_argument "n" - not implemented yet "no-renumber\0" No_argument "p" // no-op so far "number-separator\0" Required_argument "s" "starting-line-number\0"Required_argument "v" "number-width\0" Required_argument "w" ; #endif int exitcode; ns.width = 6; ns.start = 1; ns.inc = 1; ns.sep = "\t"; getopt32long(argv, "pw:+s:v:+i:+b:", nl_longopts, &ns.width, &ns.sep, &ns.start, &ns.inc, &opt_b); ns.all = (opt_b[0] == 'a'); ns.nonempty = (opt_b[0] == 't'); ns.empty_str = xasprintf("%*s\n", ns.width + (int)strlen(ns.sep), ""); argv += optind; if (!*argv) *--argv = (char*)"-"; exitcode = EXIT_SUCCESS; do { exitcode |= print_numbered_lines(&ns, *argv); } while (*++argv); fflush_stdout_and_exit(exitcode); }