Add a new soeliminate(1) command

mandoc(1) does not provide an equivalent of the GNU groff's soelim(1) as an
external binary. It does provide the funcitonnality but internally.

Lots if manpages in ports uses ".so" directives to include the content of
another manpage, which works properly if the manpages are not compressed.
With compressed manpages it will fail. So we need to preprocess those manpages
with soelim(1) before compressing them.

soeliminate(1) add the minimum functionnality from soelim(1) required for that
task, in order to still be able to prepare properly those manpages in case we
ship the base system only with mandoc as a manpage renderer.

soeliminate(1) accept all the arguments from soelim(1) for compatibility but
only '-I dir' is really functionnal.

Name it soeliminate and not soelim, so groff from base or ports can still call
soelim(1) for its internal use and avoid potential incompatibilities

MFC after:	1 month

4 files changed, 251 insertions, 10 deletions

diff --git a/usr.bin/Makefile b/usr.bin/Makefile
index 865be93..37b672c 100644
--- a/usr.bin/Makefile
+++ b/usr.bin/Makefile
@@ -1,7 +1,7 @@
 #	From: @(#)Makefile	8.3 (Berkeley) 1/7/94
 # $FreeBSD$
 
-.include <src.opts.mk>
+.include <bsd.own.mk>
 
 # XXX MISSING:		deroff diction graph learn plot
 #			spell spline struct xsend
@@ -149,6 +149,7 @@ SUBDIR=	alias \
 	shar \
 	showmount \
 	sockstat \
+	soeliminate \
 	sort \
 	split \
 	stat \
@@ -164,7 +165,6 @@ SUBDIR=	alias \
 	${_tests} \
 	tftp \
 	time \
-	timeout \
 	tip \
 	top \
 	touch \
@@ -184,6 +184,7 @@ SUBDIR=	alias \
 	unvis \
 	uudecode \
 	uuencode \
+	vi \
 	vis \
 	vmstat \
 	w \
@@ -233,10 +234,6 @@ SUBDIR+=	calendar
 _clang=		clang
 .endif
 
-.if ${MK_FMAKE} != "no"
-SUBDIR+=	make
-.endif
-
 .if ${MK_GPL_DTC} != "yes"
 SUBDIR+=	dtc
 .endif
@@ -269,6 +266,10 @@ SUBDIR+=	drill
 SUBDIR+=	host
 .endif
 
+.if ${MK_LIBTHR} != "no"
+SUBDIR+=	csup
+.endif
+
 .if ${MK_LOCATE} != "no"
 SUBDIR+=	locate
 .endif
@@ -282,7 +283,11 @@ SUBDIR+=	msgs
 .endif
 
 .if ${MK_MAKE} != "no"
+.if ${MK_BMAKE} != "no"
 SUBDIR+=	bmake
+.else
+SUBDIR+=	make
+.endif
 .endif
 
 .if ${MK_MAN_UTILS} != "no"
@@ -358,10 +363,6 @@ SUBDIR+=	xstr
 SUBDIR+=	yacc
 .endif
 
-.if ${MK_VI} != "no"
-SUBDIR+=	vi
-.endif
-
 .if ${MK_VT} != "no"
 SUBDIR+=	vtfontcvt
 .endif
diff --git a/usr.bin/soeliminate/Makefile b/usr.bin/soeliminate/Makefile
new file mode 100644
index 0000000..17d4525
--- /dev/null
+++ b/usr.bin/soeliminate/Makefile
@@ -0,0 +1,5 @@
+# $FreeBSD$
+
+PROG=	soeliminate
+
+.include <bsd.prog.mk>
diff --git a/usr.bin/soeliminate/soeliminate.1 b/usr.bin/soeliminate/soeliminate.1
new file mode 100644
index 0000000..d04596e
--- /dev/null
+++ b/usr.bin/soeliminate/soeliminate.1
@@ -0,0 +1,82 @@
+.\" Copyright (c) 2014 Baptiste Daroussin <bapt@FreeBSD.org>
+.\" 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.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd November 22, 2014
+.Dt SOELIMINATE 1
+.Os
+.Sh NAME
+.Nm soeliminate
+.Nd interpret .so directive in manpages
+.Sh SYNOPSIS
+.Nm
+.Op Fl Crtv
+.Op Fl I Ar dir
+.Op Ar files ...
+.Sh DESCRIPTION
+.Nm
+reads
+.Ar files
+lines by lines.
+.Pp
+If a line starts by:
+.Dq .so anotherfile
+it replace the line by processing
+.Dq anotherfile .
+Otherwise the line is printed to stdout.
+.Bl -tag -width "-I dir"
+.It Fl C
+Compatibility with GNU groff's
+.Xr soelim 1
+(does nothing).
+.It Fl r
+Compatibility with GNU groff's
+.Xr soelim 1
+(does nothing).
+.It Fl t
+Compatibility with GNU groff's
+.Xr soelim 1
+(does nothing).
+.It Fl v
+Compatibility with GNU groff's
+.Xr soelim 1
+(does nothing).
+.It Fl I Ar dir
+This option specify directories where
+.Nm
+searches for files (both those on the command line and those named in 
+.Dq .so
+directive.)
+This options may be specified multiple times. The directories will be searched
+in the order specified.
+.El
+.Pp
+The files are always searched first in the current directory.
+.Pp
+A file specified with an absolute path will be opened directly without
+performing a search.
+.Sh SEE ALSO
+.Xr mandoc 1 ,
+.Xr soelim 1
diff --git a/usr.bin/soeliminate/soeliminate.c b/usr.bin/soeliminate/soeliminate.c
new file mode 100644
index 0000000..80b337f
--- /dev/null
+++ b/usr.bin/soeliminate/soeliminate.c
@@ -0,0 +1,153 @@
+/*-
+ * Copyright (c) 2014 Baptiste Daroussin <bapt@FreeBSD.org>
+ * 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
+ *    in this position and unchanged.
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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 AUTHOR(S) 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 <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+
+#define _WITH_GETLINE
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include <stringlist.h>
+#include <err.h>
+#include <ctype.h>
+
+static StringList *includes;
+
+static void
+usage(void)
+{
+
+	fprintf(stderr, "usage: soeliminate [-Crtv] [-I dir] [files]\n");
+
+	exit(EXIT_FAILURE);
+}
+
+static FILE *
+soelim_fopen(const char *name)
+{
+	FILE *f;
+	char path[MAXPATHLEN];
+	size_t i;
+
+	if ((f = fopen(name, "r")) != NULL)
+		return (f);
+
+	if (*name == '/') {
+		warn("can't open '%s'", name);
+		return (NULL);
+	}
+
+	for (i = 0; i < includes->sl_cur; i++) {
+		snprintf(path, sizeof(path), "%s/%s", includes->sl_str[i],
+		    name);
+		if ((f = fopen(path, "r")) != NULL)
+			return (f);
+	}
+
+	warn("can't open '%s'", name);
+
+	return (f);
+}
+
+static int
+soelim_file(FILE *f)
+{
+	char *line = NULL;
+	char *walk;
+	size_t linecap = 0;
+	ssize_t linelen;
+
+	if (f == NULL)
+		return (1);
+
+	while ((linelen = getline(&line, &linecap, f)) > 0) {
+		if (strncmp(line, ".so", 3) != 0) {
+			printf("%s", line);
+			continue;
+		}
+		walk = line + 3;
+		while (isspace(*walk))
+			walk++;
+
+		while (isspace(walk[strlen(walk) - 1]))
+			walk[strlen(walk) - 1] = '\0';
+		if (soelim_file(soelim_fopen(walk)) == 1) {
+			free(line);
+			return (1);
+		}
+	}
+
+	free(line);
+	fclose(f);
+
+	return (0);
+}
+
+int
+main(int argc, char **argv)
+{
+	int ch, i;
+	int ret = 0;
+
+	includes = sl_init();
+	if (includes == NULL)
+		err(EXIT_FAILURE, "sl_init()");
+
+	while ((ch = getopt(argc, argv, "CrtvI:")) != -1) {
+		switch (ch) {
+		case 'C':
+		case 'r':
+		case 'v':
+		case 't':
+			/* stub compatibility with groff's soelim */
+			break;
+		case 'I':
+			sl_add(includes, optarg);
+			break;
+		default:
+			sl_free(includes, 0);
+			usage();
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (argc == 0)
+		ret = soelim_file(stdin);
+
+	for (i = 0; i < argc; i++)
+		ret = soelim_file(soelim_fopen(argv[i]));
+
+	sl_free(includes, 0);
+
+	return (ret);
+}