generate bash completion scripts from XML doc files

This generates the scripts that lets bash do completion per specific tool.
It gets the options from the documentation XML files that are also the
source for the man pages and HTML.

.gitignore

@@ -55,6 +55,22 @@ stamp-h*
 *.tmp
 ChangeLog
 
+doc/tools/cardos-tool
+doc/tools/cryptoflex-tool
+doc/tools/eidenv
+doc/tools/iasecc-tool
+doc/tools/netkey-tool
+doc/tools/openpgp-tool
+doc/tools/opensc-explorer
+doc/tools/opensc-tool
+doc/tools/piv-tool
+doc/tools/pkcs11-tool
+doc/tools/pkcs15-crypt
+doc/tools/pkcs15-init
+doc/tools/pkcs15-tool
+doc/tools/sc-hsm-tool
+doc/tools/westcos-tool
+
 etc/opensc.conf.win
 etc/opensc.conf
 src/common/compat_getopt_main

doc/tools/Makefile.am

@@ -10,6 +10,9 @@ man1_MANS = $(patsubst $(srcdir)/%.xml, %, $(wildcard $(srcdir)/*.1.xml))
 man5_MANS = $(patsubst $(srcdir)/%.xml, %, $(wildcard $(srcdir)/*.5.xml))
 endif
 
+completion_DATA = $(patsubst $(srcdir)/%.1.xml, %, $(wildcard $(srcdir)/*.1.xml))
+completiondir = $(sysconfdir)/bash_completion.d
+
 tools.html: $(srcdir)/tools.xml $(wildcard $(srcdir)/*.1.xml) $(wildcard $(srcdir)/*.5.xml)
 	$(XSLTPROC) --nonet --path "$(srcdir)/..:$(xslstylesheetsdir)/html" --xinclude -o $@ html.xsl $<
 
@@ -21,5 +24,21 @@ tools.html: $(srcdir)/tools.xml $(wildcard $(srcdir)/*.1.xml) $(wildcard $(srcdi
 	sed -e 's|@pkgdatadir[@]|$(pkgdatadir)|g' < $< \
 	| $(XSLTPROC) --nonet --path "$(srcdir)/..:$(xslstylesheetsdir)/manpages" --xinclude -o $@ man.xsl $<
 
+%: $(srcdir)/%.1.xml
+	echo $< $@
+	cat completion-template \
+		| sed "s,ALLOPTS,\
+			$(shell sed -n 's,\s\s\s*<option>\([^<]*\)</option>.*,\1,pg' $< \
+				| sort -u | grep -- '^\-' | tr '\n' ' ')," \
+		| sed "s,OPTSWITHARGS,\
+			$(shell sed -n 's,\s\s\s*<option>\([^<]*\)</option>.*<replaceable>.*,\1,pg' $< \
+				| sort -u | grep -- '^\-' | tr '\n' '|' | sed 's,|$$,,')," \
+		| sed "s,FILEOPTS,\
+			$(shell sed -n 's,\s\s\s*<option>\([^<]*\)</option>.*<replaceable>.*filename.*,\1,pg' $< \
+				| sort -u | grep -- '^\-' | tr '\n' '|')," \
+		| sed "s,FUNCTION_NAME,$(shell echo $@ | sed s,-,_,g)," \
+		| sed "s,PROGRAM_NAME,$@," \
+		> $@
+
 clean-local:
-	-rm -rf $(html_DATA) $(man1_MANS) $(man5_MANS)
+	-rm -rf $(html_DATA) $(man1_MANS) $(man5_MANS) $(completion_DATA)

doc/tools/completion-template

@@ -0,0 +1,45 @@
+# this was auto-generated by OpenSC/doc/tools/Makefile.am
+_FUNCTION_NAME()
+{
+    COMPREPLY=()
+    local cur prev split=false
+    _get_comp_words_by_ref cur prev
+
+    _split_longopt && split=true
+
+    opts="ALLOPTS"
+
+    if [ ${COMP_CWORD} -eq 1 ]; then
+        COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
+        return 0
+    fi
+
+    case "${prev}" in
+        OPTSWITHARGS)
+            return 0
+            ;;
+        *)
+            COMPREPLY=($(compgen -W "${opts}" -- ${cur}))
+            return 0
+            ;;
+    esac
+
+    $split && return 0
+
+    if [[ "$cur" == -* ]]; then
+        _longopt $1
+        return
+    fi
+
+    _filedir
+}
+complete -F _FUNCTION_NAME PROGRAM_NAME
+
+
+# Local variables:
+# mode: shell-script
+# sh-basic-offset: 4
+# sh-indent-comment: t
+# indent-tabs-mode: nil
+# End:
+# ex: ts=4 sw=4 et filetype=sh