guestfish: Enable grouping in string lists

This change adds the ability to group entries in a string list with single
quotes. So the string:
  "'foo bar'"
becomes 1 token rather than 2. Consequently single quotes must now be escaped:
  "\'"
resolves to a literal single quote.

Incidentally, this change also alters another, probably unintentional behaviour
of the previous implementation, in that tokens are separated by any amount of
whitespace rather than a single whitespace character. I.e.:
  "a  b"
resolves to:
  'a' 'b'
rather than:
  'a' '' 'b'
That last syntax can be used if an empty argument is still desired. Whitespace
is now also defined to include tabs.

parse_string_list can also now fail if it contains an unmatched open quote.

2 files changed, 62 insertions, 1 deletions

diff --git a/regressions/Makefile.am b/regressions/Makefile.am
index 3279f95c..9112b94d 100644
--- a/regressions/Makefile.am
+++ b/regressions/Makefile.am
@@ -32,7 +32,8 @@ TESTS = \
 	test-qemudie-synch.sh \
 	test-read_file.sh \
 	test-remote.sh \
-	test-reopen.sh
+	test-reopen.sh \
+	test-stringlist.sh
 
 SKIPPED_TESTS = \
 	test-bootbootboot.sh
diff --git a/regressions/test-stringlist.sh b/regressions/test-stringlist.sh
new file mode 100755
index 00000000..0b0c476e
--- /dev/null
+++ b/regressions/test-stringlist.sh
@@ -0,0 +1,60 @@
+#!/bin/sh -
+# libguestfs
+# Copyright (C) 2009 Red Hat Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+# Test remote control of guestfish.
+
+set -e
+
+rm -f test.img
+
+eval `../fish/guestfish --listen`
+
+error=0
+
+function check_echo {
+    test=$1
+    expected=$2
+
+    local echo
+
+    echo=$(../fish/guestfish --remote echo_daemon "$test")
+    if [ "$echo" != "$expected" ]; then
+        echo "Expected \"$expected\", got \"$echo\""
+        error=1
+    fi
+}
+
+../fish/guestfish --remote alloc test.img 10M
+../fish/guestfish --remote run
+
+check_echo "' '"            " "
+check_echo "\'"             "'"
+check_echo "'\''"           "'"
+check_echo "'\' '"          "' "
+check_echo "'\'foo\''"      "'foo'"
+check_echo "foo' 'bar"      "foo bar"
+check_echo "foo'  'bar"     "foo  bar"
+check_echo "'foo' 'bar'"    "foo bar"
+check_echo "'foo' "         "foo"
+check_echo " 'foo'"         "foo"
+
+../fish/guestfish --remote exit
+
+rm -f test.img
+
+exit $error