Add a configuration file upgrade script

This isn't ready for distribution but allows users of the -git version
of calcurse to easily update their configuration files without having to
edit them manually.

Following things are still missing here:

* A command line parameter to specify a custom data directory.
* A backup file that is created automatically before upgrading.
* Debug output.

Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>

Makefile.am

@@ -2,7 +2,7 @@ AUTOMAKE_OPTIONS= foreign
 
 ACLOCAL_AMFLAGS = -I m4
 
-SUBDIRS = po src test
+SUBDIRS = po src test scripts
 
 if ENABLE_DOCS
 SUBDIRS += doc

configure.ac

@@ -145,8 +145,8 @@ AM_XGETTEXT_OPTION([--no-location --keyword=_ --keyword=N_])
 #-------------------------------------------------------------------------------
 #                                                               Create Makefiles
 #-------------------------------------------------------------------------------
-AC_OUTPUT(Makefile doc/Makefile src/Makefile test/Makefile po/Makefile.in \
+AC_OUTPUT(Makefile doc/Makefile src/Makefile test/Makefile scripts/Makefile \
-          po/Makefile)
+          po/Makefile.in po/Makefile)
 #-------------------------------------------------------------------------------
 #                                                                        Summary
 #-------------------------------------------------------------------------------

scripts/Makefile.am

@@ -0,0 +1,3 @@
+AUTOMAKE_OPTIONS = foreign
+
+dist_bin_SCRIPTS = calcurse-upgrade

scripts/calcurse-upgrade

@@ -0,0 +1,67 @@
+#!/bin/sh
+
+CONFFILE=$HOME/.calcurse/conf
+
+if grep -q -e '^auto_save=' -e '^auto_gc=' -e '^periodic_save=' \
+  -e '^confirm_quit=' -e '^confirm_delete=' -e '^skip_system_dialogs=' \
+  -e '^skip_progress_bar=' -e '^calendar_default_view=' \
+  -e '^week_begins_on_monday=' -e '^color-theme=' -e '^layout=' \
+  -e '^side-bar_width=' -e '^notify-bar_show=' -e '^notify-bar_date=' \
+  -e '^notify-bar_clock=' -e '^notify-bar_warning=' -e '^notify-bar_command=' \
+  -e '^notify-all=' -e '^output_datefmt=' -e '^input_datefmt=' \
+  -e '^notify-daemon_enable=' -e '^notify-daemon_log=' "$CONFFILE"; then
+
+  tmpfile="${TMPDIR:-/tmp}/calcurse-upgrade.$!"
+  [ -e "$tmpfile" ] && exit 1
+
+  sed -e 's/^auto_save=/general.autosave=/' \
+    -e 's/^auto_gc=/general.autogc=/' \
+    -e 's/^periodic_save=/general.periodicsave=/' \
+    -e 's/^confirm_quit=/general.confirmquit=/' \
+    -e 's/^confirm_delete=/general.confirmdelete=/' \
+    -e 's/^skip_system_dialogs=/general.systemdialogs=/' \
+    -e 's/^skip_progress_bar=/general.progressbar=/' \
+    -e 's/^calendar_default_view=/appearance.calendarview=/' \
+    -e 's/^week_begins_on_monday=/general.firstdayofweek=/' \
+    -e 's/^color-theme=/appearance.theme=/' \
+    -e 's/^layout=/appearance.layout=/' \
+    -e 's/^side-bar_width=/appearance.sidebarwidth=/' \
+    -e 's/^notify-bar_show=/appearance.notifybar=/' \
+    -e 's/^notify-bar_date=/format.notifydate=/' \
+    -e 's/^notify-bar_clock=/format.notifytime=/' \
+    -e 's/^notify-bar_warning=/notification.warning=/' \
+    -e 's/^notify-bar_command=/notification.command=/' \
+    -e 's/^notify-all=/notification.notifyall=/' \
+    -e 's/^output_datefmt=/format.outputdate=/' \
+    -e 's/^input_datefmt=/format.inputdate=/' \
+    -e 's/^notify-daemon_enable=/daemon.enable=/' \
+    -e 's/^notify-daemon_log=/daemon.log=/' "$CONFFILE" > "$tmpfile" || exit 1
+  mv "$tmpfile" "$CONFFILE" || exit 1
+
+  if grep -q -e '^[^#=][^#=]*$' -e '^[^#=][^#=]*#.*$' "$CONFFILE"; then
+    sed -e '/^general.autosave=/{N;s/\n//}' \
+      -e '/^general.autogc=/{N;s/\n//}' \
+      -e '/^general.periodicsave=/{N;s/\n//}' \
+      -e '/^general.confirmquit=/{N;s/\n//}' \
+      -e '/^general.confirmdelete=/{N;s/\n//}' \
+      -e '/^general.systemdialogs=/{N;s/\n//}' \
+      -e '/^general.progressbar=/{N;s/\n//}' \
+      -e '/^appearance.calendarview=/{N;s/\n//}' \
+      -e '/^general.firstdayofweek=/{N;s/\n//}' \
+      -e '/^appearance.theme=/{N;s/\n//}' \
+      -e '/^appearance.layout=/{N;s/\n//}' \
+      -e '/^appearance.sidebarwidth=/{N;s/\n//}' \
+      -e '/^appearance.notifybar=/{N;s/\n//}' \
+      -e '/^format.notifydate=/{N;s/\n//}' \
+      -e '/^format.notifytime=/{N;s/\n//}' \
+      -e '/^notification.warning=/{N;s/\n//}' \
+      -e '/^notification.command=/{N;s/\n//}' \
+      -e '/^notification.notifyall=/{N;s/\n//}' \
+      -e '/^format.outputdate=/{N;s/\n//}' \
+      -e '/^format.inputdate=/{N;s/\n//}' \
+      -e '/^daemon.enable=/{N;s/\n//}' \
+      -e '/^daemon.log=/{N;s/\n//}' "$CONFFILE" > "$tmpfile" || exit 1
+    mv "$tmpfile" "$CONFFILE" || exit 1
+  fi
+fi
+