Set environment for shell command

mope-sh-shell

#!/usr/bin/env bash

set -e

[ -n "$MOPE_DEBUG" ] && set -x

# Provide mope completions
if [ "$1" = "--complete" ]; then
	echo --unset
	echo system
	exec mope-versions --bare
fi

version="$1"

if [ -z "$version" ]; then
	if [ -z "$MOPE_VERSION" ]; then
		echo "mope: no shell-specific version configured" >&2
		exit 1
	else
		echo "echo \"\$MOPE_VERSION\""
		exit
	fi
fi

if [ "$version" = "--unset" ]; then
	# set environment back
	echo "unset MOPE_VERSION"

	if [ -n "$DYLD_FALLBACK_LIBRARY_PATH" ]; then
		echo "unset DYLD_FALLBACK_LIBRARY_PATH"
	fi

	if [ -n "$C_INCLUDE_PATH" ]; then
		echo "unset C_INCLUDE_PATH"
	fi

	if [ -n "$ACLOCAL_PATH" ]; then
		echo "unset ACLOCAL_PATH"
	fi

	if [ -n "$PKG_CONFIG_PATH" ]; then
		echo "unset PKG_CONFIG_PATH"
	fi

	MOPE_VERSION_FILE="$(mope-version-file)"
	MOPE_VERSION="$(mope-version-file-read "$MOPE_VERSION_FILE" || true)"
	if [ -n "$MOPE_VERSION" ] && [ ! "$MOPE_VERSION" = "system" ]; then
		MONO_PREFIX="${MOPE_ROOT}/versions/${MOPE_VERSION}"
		echo "export DYLD_FALLBACK_LIBRARY_PATH=\"${MONO_PREFIX}/lib\""
		echo "export C_INCLUDE_PATH=\"${MONO_PREFIX}/include\""
		echo "export ACLOCAL_PATH=\"${MONO_PREFIX}/share/aclocal\""
		echo "export PKG_CONFIG_PATH=\"${MONO_PREFIX}/lib/pkgconfig\""
		exit
	fi

	exit 1
fi

# Make sure the specified version is installed.
mope-prefix "$version" >/dev/null

MONO_PREFIX="${MOPE_ROOT}/versions/${version}"

# Export environment variables
echo "export MOPE_VERSION=\"${version}\""
echo "export DYLD_FALLBACK_LIBRARY_PATH=\"${MONO_PREFIX}/lib\""
echo "export C_INCLUDE_PATH=\"${MONO_PREFIX}/include\""
echo "export ACLOCAL_PATH=\"${MONO_PREFIX}/share/aclocal\""
echo "export PKG_CONFIG_PATH=\"${MONO_PREFIX}/lib/pkgconfig\""