pho-earth-adaptive/change_theme.sh

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#! /bin/bash
THEMES_DIR=color_themes
CSS_LINK_NAME=theme_colors.css
maxParams=1
usage() {
echo -e "Usage: $(basename "$0") [color_theme_to_activate.css]\n" >&2
echo -e "Activates a color theme\nIf you don't specify one in the command, it will show all possible themes and let you select one'" >&2
}
if [ $# -gt $maxParams ]
then
echo -e "\nError: Incorrect usage." >&2
usage
exit 1
fi
# if we have one parameter, let this be aour destination file
if [ $# -eq 1 ]
then
destFile=$1
fi
if [ -z $destFile ]
then
echo -e "\nList of themes to chose from:\n"
ls $THEMES_DIR
echo -e "\nPlease write the name of the theme to use (full name with extension): "
read destFile
fi
if [[ ! -f $THEMES_DIR/$destFile ]]
then
echo -e "Error: specified theme does not exist."
exit 2
fi
#remove link if it exists:
[[ -f $CSS_LINK_NAME ]] && rm $CSS_LINK_NAME
ln -s $THEMES_DIR/$destFile $CSS_LINK_NAME
echo -e "\nSuccessfully created $CSS_LINK_NAME linking to $THEMES_DIR/$destFile\n\n"