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# generated from colcon_zsh/shell/template/prefix.zsh.em
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# This script extends the environment with all packages contained in this
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# prefix path.
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# a zsh script is able to determine its own path if necessary
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if [ -z "$COLCON_CURRENT_PREFIX" ]; then
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_colcon_prefix_zsh_COLCON_CURRENT_PREFIX="$(builtin cd -q "`dirname "${(%):-%N}"`" > /dev/null && pwd)"
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else
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_colcon_prefix_zsh_COLCON_CURRENT_PREFIX="$COLCON_CURRENT_PREFIX"
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fi
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# function to convert array-like strings into arrays
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# to workaround SH_WORD_SPLIT not being set
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_colcon_prefix_zsh_convert_to_array() {
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local _listname=$1
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local _dollar="$"
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local _split="{="
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local _to_array="(\"$_dollar$_split$_listname}\")"
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eval $_listname=$_to_array
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}
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# function to prepend a value to a variable
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# which uses colons as separators
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# duplicates as well as trailing separators are avoided
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# first argument: the name of the result variable
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# second argument: the value to be prepended
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_colcon_prefix_zsh_prepend_unique_value() {
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# arguments
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_listname="$1"
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_value="$2"
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# get values from variable
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eval _values=\"\$$_listname\"
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# backup the field separator
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_colcon_prefix_zsh_prepend_unique_value_IFS="$IFS"
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IFS=":"
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# start with the new value
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_all_values="$_value"
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# workaround SH_WORD_SPLIT not being set
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_colcon_prefix_zsh_convert_to_array _values
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# iterate over existing values in the variable
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for _item in $_values; do
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# ignore empty strings
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if [ -z "$_item" ]; then
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continue
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fi
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# ignore duplicates of _value
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if [ "$_item" = "$_value" ]; then
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continue
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fi
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# keep non-duplicate values
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_all_values="$_all_values:$_item"
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done
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unset _item
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# restore the field separator
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IFS="$_colcon_prefix_zsh_prepend_unique_value_IFS"
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unset _colcon_prefix_zsh_prepend_unique_value_IFS
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# export the updated variable
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eval export $_listname=\"$_all_values\"
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unset _all_values
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unset _values
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unset _value
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unset _listname
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}
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# add this prefix to the COLCON_PREFIX_PATH
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_colcon_prefix_zsh_prepend_unique_value COLCON_PREFIX_PATH "$_colcon_prefix_zsh_COLCON_CURRENT_PREFIX"
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unset _colcon_prefix_zsh_prepend_unique_value
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unset _colcon_prefix_zsh_convert_to_array
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# check environment variable for custom Python executable
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if [ -n "$COLCON_PYTHON_EXECUTABLE" ]; then
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if [ ! -f "$COLCON_PYTHON_EXECUTABLE" ]; then
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echo "error: COLCON_PYTHON_EXECUTABLE '$COLCON_PYTHON_EXECUTABLE' doesn't exist"
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return 1
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fi
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_colcon_python_executable="$COLCON_PYTHON_EXECUTABLE"
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else
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# try the Python executable known at configure time
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_colcon_python_executable="/usr/bin/python3"
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# if it doesn't exist try a fall back
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if [ ! -f "$_colcon_python_executable" ]; then
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if ! /usr/bin/env python3 --version > /dev/null 2> /dev/null; then
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echo "error: unable to find python3 executable"
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return 1
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fi
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_colcon_python_executable=`/usr/bin/env python3 -c "import sys; print(sys.executable)"`
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fi
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fi
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# function to source another script with conditional trace output
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# first argument: the path of the script
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_colcon_prefix_sh_source_script() {
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if [ -f "$1" ]; then
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if [ -n "$COLCON_TRACE" ]; then
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echo ". \"$1\""
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fi
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. "$1"
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else
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echo "not found: \"$1\"" 1>&2
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fi
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}
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# get all commands in topological order
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_colcon_ordered_commands="$($_colcon_python_executable "$_colcon_prefix_zsh_COLCON_CURRENT_PREFIX/_local_setup_util_sh.py" sh zsh)"
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unset _colcon_python_executable
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if [ -n "$COLCON_TRACE" ]; then
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echo "Execute generated script:"
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echo "<<<"
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echo "${_colcon_ordered_commands}"
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echo ">>>"
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fi
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eval "${_colcon_ordered_commands}"
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unset _colcon_ordered_commands
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unset _colcon_prefix_sh_source_script
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unset _colcon_prefix_zsh_COLCON_CURRENT_PREFIX
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