Complete rewrite, once again.

This is basically a ``C compilation'' of the former whereis.pl file,
employing the same algorithms, and aiming at being mostly
UI-compatible to the old (legally tainted) 4.3BSD whereis(1).  In
comparision, the 4.4BSD-Lite version is just another variant of
which(1) only, where in particular the option to search for source
directories is sorely missing.

While i was at it, i added two more options which i contemplated doing
long since.  -x will suppress the run of locate(1) to find sources
that could not be found otherwise, potentially saving a lot of time
(but obviously, risking to not find some sources that are well hidden
in the tree).  -q will omit the leading name of the query, so in
particular, you can now do something like:

	cd `whereis -qs ls`

I'd explicitly like to thank johan for his review which was quite a
bit more than an average review, including sending me a lot of diffs.

Reviewed by:	johan

1 files changed, 50 insertions, 0 deletions

diff --git a/usr.bin/whereis/pathnames.h b/usr.bin/whereis/pathnames.h
new file mode 100644
index 0000000..2ffe2f1
--- /dev/null
+++ b/usr.bin/whereis/pathnames.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright © 2002, Jörg Wunsch
+ *
+ * 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(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.
+ *
+ * $FreeBSD$
+ */
+
+/* Where to look for sources. */
+#define PATH_SOURCES					\
+"/usr/src/bin:/usr/src/usr.bin:/usr/src/sbin:"		\
+"/usr/src/usr.sbin:/usr/src/libexec:"			\
+"/usr/src/gnu/bin:/usr/src/gnu/usr.bin:"		\
+"/usr/src/gnu/sbin:/usr/src/gnu/usr.sbin:"		\
+"/usr/src/gnu/libexec:/usr/src/contrib:"		\
+"/usr/src/secure/bin:/usr/src/secure/usr.bin:"		\
+"/usr/src/secure/sbin:/usr/src/secure/usr.sbin:"	\
+"/usr/src/secure/libexec:/usr/src/crypto"
+
+/* Each subdirectory of PATH_PORTS will be appended to PATH_SOURCES. */
+#define PATH_PORTS "/usr/ports"
+
+/* How to query the current manpath. */
+#define MANPATHCMD "manpath -q"
+
+/* How to obtain the location of manpages, and how to match this result. */
+#define MANWHEREISCMD "man -S1:8 -w %s 2>/dev/null"
+#define MANWHEREISMATCH "^.* [(]source: (.*)[)]$"
+
+/* Command used to locate sources that have not been found yet. */
+#define LOCATECMD "locate '*'/%s 2>/dev/null"