Add BASH auto completion

Makefile

@@ -5,6 +5,7 @@ SBINDIR= $(DESTDIR)/$(EXEC_PREFIX)/sbin
 BINDIR=  $(DESTDIR)$(EXEC_PREFIX)/bin
 DATAROOTDIR= $(DESTDIR)/$(PREFIX)/share
 MANDIR= $(DATAROOTDIR)/man
+COMPLETIONINSTALLDIR=$(DESTDIR)/etc/bash_completion.d
 DEFTAPE?= /dev/tape
 INSTALL= install
 
@@ -20,6 +21,7 @@ DISTFILES = \
 	mt.c \
 	mtio.h \
 	README.md \
+	mt-st \
 	stinit.8 \
 	stinit.c \
 	stinit.def.examples \
@@ -39,9 +41,10 @@ version.h: Makefile
 	$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -DDEFTAPE='"$(DEFTAPE)"' -o $@ $<
 
 install: $(PROGS)
-	$(INSTALL) -d $(BINDIR)  $(SBINDIR) $(MANDIR) $(MANDIR)/man1 $(MANDIR)/man8
+	$(INSTALL) -d $(BINDIR)  $(SBINDIR) $(MANDIR) $(MANDIR)/man1 $(MANDIR)/man8 $(COMPLETIONINSTALLDIR)
 	$(INSTALL) mt $(BINDIR)
 	$(INSTALL) -m 444 mt.1 $(MANDIR)/man1
+	$(INSTALL) -m 644 mt-st $(COMPLETIONINSTALLDIR)
 	(if [ -f $(MANDIR)/man1/mt.1.gz ] ; then \
 	  rm -f $(MANDIR)/man1/mt.1.gz; gzip $(MANDIR)/man1/mt.1; fi)
 	$(INSTALL) stinit $(SBINDIR)
@@ -78,10 +81,10 @@ distcheck: dist
 	make install DESTDIR="$$DST" && \
 	numfiles=$$( \
 	find "$$DST" -type f \
-	  \( -name mt -o -name stinit -o -name mt.1 -o -name stinit.8 \) | \
+	  \( -name mt -o -name stinit -o -name mt.1 -o -name stinit.8 -o -name mt-st \) | \
 	  wc -l) && \
-	echo "$$numfiles files installed (4 expected)" && \
-	test "$$numfiles" -eq 4
+	echo "$$numfiles files installed (5 expected)" && \
+	test "$$numfiles" -eq 5
 
 release-tag:
 	git tag -s -m 'Release version $(VERSION).' mt-st-$(VERSION)

README.md

@@ -72,6 +72,7 @@ The files:
 - `stinit.c`: The stinit source
 - `stinit.8`: The man page for stinit
 - `stinit.def.examples`: example configurations for different devices
+- `mt-st`: bash auto completion file
 
 ## Installation
 

mt-st

@@ -0,0 +1,39 @@
+#mt bash completion by Paweł Marciniak <sunwire<at>gmail.com>
+#
+
+_mt () {
+    local cur prev words cword
+    _init_completion || return
+
+    #possible commands
+    commands="weof wset eof fsf fsfm bsf bsfm fsr bsr fss bss rewind offline rewoffl eject retension eod seod seek tell status erase setblk lock unlock load compression setdensity drvbuffer stwrthreshold stoptions stsetoptions stclearoptions defblksize defdensity defdrvbuffer defcompression stsetcln sttimeout stlongtimeout densities setpartition mkpartition partseek asf stshowopt"
+
+    COMPREPLY=()
+
+    case $prev in
+        -v | --version)
+            return
+            ;;
+        -f )
+            if [ -x "$(command -v udevadm)" ]; then
+                #list tape devices
+                for d in `udevadm trigger --verbose --dry-run --type=devices --subsystem-match=scsi_tape`; do
+                  devs+="/dev/${d##*/} "
+                done
+                COMPREPLY=($(compgen -W "$devs" -- "$cur"))
+            else
+              _filedir
+            fi
+            return
+            ;;
+    esac
+
+    if [[ $cur == -* ]]; then
+        COMPREPLY=($(compgen -W '-f -v' -- "$cur"))
+        return
+    fi
+
+    COMPREPLY=($(compgen -W "$commands" -- "$cur"))
+
+}
+complete -F _mt mt