From ab046ee6ea7b9179bf5fd3632f2be4376e45c108 Mon Sep 17 00:00:00 2001 From: Thomas Cort Date: Mon, 18 Mar 2013 22:56:28 +0000 Subject: [PATCH] Importing usr.bin/head --- commands/Makefile | 2 +- commands/head/Makefile | 4 - commands/head/head.c | 88 ----------------- man/man1/Makefile | 2 +- man/man1/head.1 | 37 -------- releasetools/nbsd_ports | 1 + usr.bin/Makefile | 2 +- usr.bin/head/Makefile | 6 ++ usr.bin/head/head.1 | 97 +++++++++++++++++++ usr.bin/head/head.c | 204 ++++++++++++++++++++++++++++++++++++++++ 10 files changed, 311 insertions(+), 132 deletions(-) delete mode 100644 commands/head/Makefile delete mode 100644 commands/head/head.c delete mode 100644 man/man1/head.1 create mode 100644 usr.bin/head/Makefile create mode 100644 usr.bin/head/head.1 create mode 100644 usr.bin/head/head.c diff --git a/commands/Makefile b/commands/Makefile index f4e423429..7a9d76003 100644 --- a/commands/Makefile +++ b/commands/Makefile @@ -10,7 +10,7 @@ SUBDIR= add_route arp ash at backup basename btrace \ dhrystone diff dirname diskctl dumpcore \ eject env expand factor fbdctl \ find finger fingerd fix fold format fortune fsck.mfs \ - ftp101 gcore gcov-pull getty grep head hexdump host \ + ftp101 gcore gcov-pull getty grep hexdump host \ hostaddr id ifconfig ifdef \ intr ipcrm ipcs irdpd isoread last \ less loadkeys loadramdisk logger look lp \ diff --git a/commands/head/Makefile b/commands/head/Makefile deleted file mode 100644 index a37d09e4f..000000000 --- a/commands/head/Makefile +++ /dev/null @@ -1,4 +0,0 @@ -PROG= head -MAN= - -.include diff --git a/commands/head/head.c b/commands/head/head.c deleted file mode 100644 index 4744e3624..000000000 --- a/commands/head/head.c +++ /dev/null @@ -1,88 +0,0 @@ -/* head - print the first few lines of a file Author: Andy Tanenbaum */ - -#include -#include -#include -#include - -#define DEFAULT 10 - -int main(int argc, char **argv); -void do_file(int n, FILE *f); -void usage(void); - -int main(argc, argv) -int argc; -char *argv[]; -{ - FILE *f; - int legacy, n, k, nfiles; - char *ptr; - - /* Check for flags. One can only specify how many lines to print. */ - k = 1; - n = DEFAULT; - legacy = 0; - for (k = 1; k < argc && argv[k][0] == '-'; k++) { - ptr = &argv[k][1]; - if (ptr[0] == 'n' && ptr[1] == 0) { - k++; - if (k >= argc) usage(); - ptr = argv[k]; - } - else if (ptr[0] == '-' && ptr[1] == 0) { - k++; - break; - } - else if (++legacy > 1) usage(); - n = atoi(ptr); - if (n <= 0) usage(); - } - nfiles = argc - k; - - if (nfiles == 0) { - /* Print standard input only. */ - do_file(n, stdin); - exit(0); - } - - /* One or more files have been listed explicitly. */ - while (k < argc) { - if (nfiles > 1) printf("==> %s <==\n", argv[k]); - if ((f = fopen(argv[k], "r")) == NULL) - fprintf(stderr, "%s: cannot open %s: %s\n", - argv[0], argv[k], strerror(errno)); - else { - do_file(n, f); - fclose(f); - } - k++; - if (k < argc) printf("\n"); - } - return(0); -} - - - -void do_file(n, f) -int n; -FILE *f; -{ - int c; - - /* Print the first 'n' lines of a file. */ - while (n) switch (c = getc(f)) { - case EOF: - return; - case '\n': - --n; - default: putc((char) c, stdout); - } -} - - -void usage() -{ - fprintf(stderr, "Usage: head [-lines | -n lines] [file ...]\n"); - exit(1); -} diff --git a/man/man1/Makefile b/man/man1/Makefile index 979d00125..34c87d720 100644 --- a/man/man1/Makefile +++ b/man/man1/Makefile @@ -6,7 +6,7 @@ MAN= ash.1 at.1 basename.1 \ dumpcore.1 eject.1 \ env.1 expand.1 factor.1 \ finger.1 flexdoc.1 fold.1 format.1 fortune.1 \ - fsck.mfs.1 head.1 host.1 hostaddr.1 ifdef.1 \ + fsck.mfs.1 host.1 hostaddr.1 ifdef.1 \ isodir.1 isoinfo.1 isoread.1 \ last.1 loadfont.1 loadkeys.1 logger.1 \ look.1 lp.1 lspci.1 mail.1 \ diff --git a/man/man1/head.1 b/man/man1/head.1 deleted file mode 100644 index 6c1734976..000000000 --- a/man/man1/head.1 +++ /dev/null @@ -1,37 +0,0 @@ -.TH HEAD 1 -.SH NAME -head \- print the first few lines of a file -.SH SYNOPSIS -\fBhead\fR [\fB\-\fIn\fR | \fB\-n\fR \fIn\fR]\fR [\fIfile\fR] ...\fR -.br -.de FL -.TP -\\fB\\$1\\fR -\\$2 -.. -.de EX -.TP 20 -\\fB\\$1\\fR -# \\$2 -.. -.SH OPTIONS -.TP 5 -.B \-n \fIn\fR -# How many lines to print -.TP 5 -.B \-\fIn\fR -# How many lines to print (backwards-compatible) -.SH EXAMPLES -.TP 20 -.B head \-n 6 -# Print first 6 lines of \fIstdin\fR -.TP 20 -.B head \-1 file1 file2 -# Print first line of two files -.SH DESCRIPTION -.PP -The first few lines of one or more files are printed. -The default count is 10 lines. -The default file is \fIstdin\fR. -.SH "SEE ALSO" -.BR tail (1). diff --git a/releasetools/nbsd_ports b/releasetools/nbsd_ports index 28536347f..344679bab 100644 --- a/releasetools/nbsd_ports +++ b/releasetools/nbsd_ports @@ -130,6 +130,7 @@ 2012/10/17 12:00:00,usr.bin/col 2012/10/17 12:00:00,usr.bin/ctags 2011/09/01 13:37:33,usr.bin/du +2013/03/18 12:00:00,usr.bin/head 2012/10/17 12:00:00,usr.bin/genassym 2013/03/09 12:00:00,usr.bin/getopt 2012/10/17 12:00:00,usr.bin/gzip diff --git a/usr.bin/Makefile b/usr.bin/Makefile index 96485f7e6..9a17fea67 100644 --- a/usr.bin/Makefile +++ b/usr.bin/Makefile @@ -11,7 +11,7 @@ SUBDIR= \ du \ \ \ - genassym getopt \ + genassym getopt head \ indent infocmp join \ ldd \ login lorder m4 \ diff --git a/usr.bin/head/Makefile b/usr.bin/head/Makefile new file mode 100644 index 000000000..0bab5688c --- /dev/null +++ b/usr.bin/head/Makefile @@ -0,0 +1,6 @@ +# $NetBSD: Makefile,v 1.4 1997/10/18 13:15:18 mrg Exp $ +# from: @(#)Makefile 8.1 (Berkeley) 6/6/93 + +PROG= head + +.include diff --git a/usr.bin/head/head.1 b/usr.bin/head/head.1 new file mode 100644 index 000000000..545f7a89c --- /dev/null +++ b/usr.bin/head/head.1 @@ -0,0 +1,97 @@ +.\" $NetBSD: head.1,v 1.12 2004/05/04 23:44:21 wiz Exp $ +.\" +.\" Copyright (c) 1980, 1990, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" from: @(#)head.1 8.1 (Berkeley) 6/6/93 +.\" +.Dd May 4, 2004 +.Dt HEAD 1 +.Os +.Sh NAME +.Nm head +.Nd display first lines of a file +.Sh SYNOPSIS +.Nm +.Op Fl qv +.Op Fl n Ar count +.Op Fl c Ar byte_count +.Op Ar file ... +.Sh DESCRIPTION +This filter displays the first +.Ar count +lines of each of the specified files, or of the standard input if no +files are specified. +If +.Ar count +is omitted it defaults to 10. +If +.Fl c Ar byte_count +is specified, +.Nm +counts bytes instead of lines. +.Pp +If more than a single file is specified, or the +.Fl v +option is used, each file is preceded by a header consisting of the string +.Dq ==\*[Gt] XXX \*[Le]= +where +.Dq XXX +is the name of the file. +The +.Fl q +flag disables the printing of the header in all cases. +.Pp +The +.Nm +utility exits 0 on success, and \*[Gt]0 if an error occurs. +.Sh COMPATIBILITY +The historic command line syntax of +.Nm +is supported by this implementation. +.Pp +This command is mostly compatible with GNU extensions to +.Nm . +.Sh SEE ALSO +.Xr tail 1 +.Sh STANDARDS +The +.Nm +utility conforms to +.St -p1003.2-92 . +.Sh HISTORY +The +.Nm +utility appeared in +.Bx 3.0 . +It was enhanced to include the +.Fl c , +.Fl q , +and +.Fl v +options for +.Nx 2.1 . diff --git a/usr.bin/head/head.c b/usr.bin/head/head.c new file mode 100644 index 000000000..48a035a63 --- /dev/null +++ b/usr.bin/head/head.c @@ -0,0 +1,204 @@ +/* $NetBSD: head.c,v 1.23 2010/03/31 21:55:23 joerg Exp $ */ + +/* + * Copyright (c) 1980, 1987, 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#ifndef lint +__COPYRIGHT("@(#) Copyright (c) 1980, 1987, 1992, 1993\ + The Regents of the University of California. All rights reserved."); +#endif /* not lint */ + +#ifndef lint +#if 0 +static char sccsid[] = "@(#)head.c 8.2 (Berkeley) 5/4/95"; +#else +__RCSID("$NetBSD: head.c,v 1.23 2010/03/31 21:55:23 joerg Exp $"); +#endif +#endif /* not lint */ + +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* + * head - give the first few lines of a stream or of each of a set of files + * + * Bill Joy UCB August 24, 1977 + */ + +static void head(FILE *, intmax_t, intmax_t); +static void obsolete(char *[]); +__dead static void usage(void); + + +int +main(int argc, char *argv[]) +{ + int ch; + FILE *fp; + int first; + uintmax_t linecnt; + uintmax_t bytecnt; + char *ep; + int eval = 0; + int qflag = 0; + int vflag = 0; + + (void)setlocale(LC_ALL, ""); + obsolete(argv); + linecnt = 10; + bytecnt = 0; + while ((ch = getopt(argc, argv, "c:n:qv")) != -1) + switch(ch) { + case 'c': + errno = 0; + bytecnt = strtoimax(optarg, &ep, 10); + if ((bytecnt == INTMAX_MAX && errno == ERANGE) || + *ep || bytecnt <= 0) + errx(1, "illegal byte count -- %s", optarg); + break; + + case 'n': + errno = 0; + linecnt = strtoimax(optarg, &ep, 10); + if ((linecnt == INTMAX_MAX && errno == ERANGE) || + *ep || linecnt <= 0) + errx(1, "illegal line count -- %s", optarg); + break; + + case 'q': + qflag = 1; + vflag = 0; + break; + + case 'v': + qflag = 0; + vflag = 1; + break; + + case '?': + default: + usage(); + } + argc -= optind; + argv += optind; + + if (*argv) + for (first = 1; *argv; ++argv) { + if ((fp = fopen(*argv, "r")) == NULL) { + warn("%s", *argv); + eval = 1; + continue; + } + if (vflag || (qflag == 0 && argc > 1)) { + (void)printf("%s==> %s <==\n", + first ? "" : "\n", *argv); + first = 0; + } + head(fp, linecnt, bytecnt); + (void)fclose(fp); + } + else + head(stdin, linecnt, bytecnt); + exit(eval); +} + +static void +head(FILE *fp, intmax_t cnt, intmax_t bytecnt) +{ + char buf[65536]; + size_t len, rv, rv2; + int ch; + + if (bytecnt) { + while (bytecnt) { + len = sizeof(buf); + if (bytecnt > (intmax_t)sizeof(buf)) + len = sizeof(buf); + else + len = bytecnt; + rv = fread(buf, 1, len, fp); + if (rv == 0) + break; /* Distinguish EOF and error? */ + rv2 = fwrite(buf, 1, rv, stdout); + if (rv2 != rv) { + if (feof(stdout)) + errx(1, "EOF on stdout"); + else + err(1, "failure writing to stdout"); + } + bytecnt -= rv; + } + } else { + while ((ch = getc(fp)) != EOF) { + if (putchar(ch) == EOF) + err(1, "stdout"); + if (ch == '\n' && --cnt == 0) + break; + } + } +} + +static void +obsolete(char *argv[]) +{ + char *ap; + + while ((ap = *++argv)) { + /* Return if "--" or not "-[0-9]*". */ + if (ap[0] != '-' || ap[1] == '-' || + !isdigit((unsigned char)ap[1])) + return; + if ((ap = malloc(strlen(*argv) + 2)) == NULL) + err(1, NULL); + ap[0] = '-'; + ap[1] = 'n'; + (void)strcpy(ap + 2, *argv + 1); + *argv = ap; + } +} + +static void +usage(void) +{ + + (void)fprintf(stderr, "usage: %s [-n lines] [file ...]\n", + getprogname()); + exit(1); +} -- 2.44.0