fix-cedilla

#!/bin/bash
#
# fix-cedilla
#
# This is a very simple program to configure your personal ".XCompose" file and
# your environment so that typing 'c will generate a cedilla c instead of an
# accented c.
#
# For further information, visit:
# http://github.com/marcopaganini/gnome-cedilla-fix
#
# (C) Marco Paganini <[email protected]>

LANG=${LANG:=en_US.UTF-8}
COMPOSE_DIR="/usr/share/X11/locale"
USER_COMPOSE="$HOME/.XCompose"
ENVFILE="/etc/environment"
INPUT_METHOD="cedilla"

PROGNAME=${0##*/}

# Find compose file for the current language.
system_compose=$COMPOSE_DIR/$(sed -ne "s/^\([^:]*\):[ \t]*$LANG/\1/p" <$COMPOSE_DIR/compose.dir | head -1)
if [ -z "$system_compose" ]; then
  echo >&2 "ERROR: Unable to find a system compose file for your system language ($LANG)"
  exit 1
fi

if [ ! -s "$system_compose" ]; then
  echo >&2 "ERROR: Unable to open system Compose file: $system_compose"
  exit 1
fi

if [ -s "$USER_COMPOSE" ]; then
  echo >&2 "*** WARNING: ***"
  echo >&2 "A file named $USER_COMPOSE already exists."
  echo >&2 "Saving original to ${USER_COMPOSE}.ORIGINAL"
  rm -f "${USER_COMPOSE}.ORIGINAL"
  cp -f "${USER_COMPOSE}" "${USER_COMPOSE}.ORIGINAL"
fi

# Configure system for our input method.
unset GTK_IM_MODULE
[ -s "$ENVFILE" ] && source "$ENVFILE"

# sudo warning
cat <<EOM
This program uses "sudo" to make changes to $ENVFILE.
You may be prompted to enter your password next.
EOM

# Make sure we're not overwriting a setting already in place
if [ -n "$GTK_IM_MODULE" ]; then
  if [ "$GTK_IM_MODULE" != "$INPUT_METHOD" ]; then
    echo >&2 "ERROR: $ENVFILE sets GTK_IM_MODULE to $GTK_IM_MODULE. Please edit the file and fix this."
    exit 1
  fi
else
  sudo /bin/sh -c "echo GTK_IM_MODULE=\"$INPUT_METHOD\" >>$ENVFILE"
fi

# Save a copy of the system Compose file into .XCompose, replacing
# all ocurrences of accented-c by cedilla-c
sed -e 's/\xc4\x87/\xc3\xa7/g' \
    -e 's/\xc4\x86/\xc3\x87/g' <"$system_compose" >"$USER_COMPOSE"

cat <<EOM
System changed.
Please reboot your system (or restart your X server) to activate the changes.
To revert the system to the previous state:
* Remove the file $USER_COMPOSE
* Edit $ENVFILE, removing all lines with GTK_IM_MODULE.
If things don't work after a reboot, make sure your Input Method
is configured to "Auto" in the Gnome Settings.
Operation complete.
EOM