Check global env variables at beginning of init scripts

Close #58

deploy-qtrpi.sh

@@ -3,6 +3,8 @@
 source ${0%/*}/utils/common.sh
 OUTPUT_DIR=$ROOT/raspi/qt5pi
 
+check_env_vars
+
 cd_root
 
 function usage() {

init-qtrpi-full.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 
+source ${0%/*}/utils/common.sh
+
 function usage() {
     cat <<EOF
 Usage: $0 [options]
@@ -34,6 +36,8 @@ if [[ $NO_QUESTIONS ]]; then
     RASPBIAN_ARG='--no-download'
 fi
 
+check_env_vars
+
 cd utils
 ./init-common.sh
 ./synchronize-toolchain.sh

init-qtrpi-minimal.sh

@@ -2,6 +2,8 @@
 
 source ${0%/*}/utils/common.sh
 
+check_env_vars
+
 # prepare environment
 $UTILS_DIR/init-common.sh
 $UTILS_DIR/synchronize-toolchain.sh

utils/common.sh

@@ -5,6 +5,18 @@
 # (the directory of the calling script is assumed to be the same as common.sh)
 ###############################################################################
 
+function message() {
+    echo
+    echo '--------------------------------------------------------------------'
+    echo $1
+    echo '--------------------------------------------------------------------'
+}
+
+function exit_error() {
+    echo -e $1
+    exit -1
+}
+
 function device_name() {
     case $1 in
         'linux-rasp-pi-g++') NAME='rpi1' ;;
@@ -14,6 +26,45 @@ function device_name() {
     echo $NAME
 }
 
+validate_var_qtrpi_qt_version() {
+    for VERSION in '5.6.2' '5.7.0'; do
+        if [[ "$QTRPI_QT_VERSION" == "$VERSION" ]]; then
+            VALID=true
+        fi
+    done
+
+    if [[ ! $VALID ]]; then
+        exit_error "Invalid QTRPI_QT_VERSION value ($QTRPI_QT_VERSION). Supported values: \n- 5.6.2 \n- 5.7.0"
+    fi
+}
+
+validate_var_qtrpi_target_device() {
+    NAME=$(device_name $QTRPI_TARGET_DEVICE)
+
+    if [[ ! $NAME ]]; then
+        exit_error "Invalid QTRPI_TARGET_DEVICE value ($QTRPI_TARGET_DEVICE). Supported values: \n- linux-rasp-pi-g++ \n- linux-rasp-pi2-g++ \n- linux-rpi3-g++"
+    fi
+}
+
+validate_var_qtrpi_target_host() {
+    TARGET_USER=$(echo $QTRPI_TARGET_HOST | cut -d@ -f1)
+
+    if [[ "$TARGET_USER" == "$QTRPI_TARGET_HOST" ]] ; then
+        exit_error "Invalid QTRPI_TARGET_HOST value ($QTRPI_TARGET_HOST). Supported value should have the format 'user@ip-address' (e.g. pi@192.168.0.42)."
+    fi
+}
+
+check_env_vars() {
+    : "${QTRPI_QT_VERSION:?Invalid environment variable, please export QTRPI_QT_VERSION.}"
+    : "${QTRPI_TARGET_DEVICE:?Invalid environment variable: please export QTRPI_TARGET_DEVICE.}"
+    : "${QTRPI_TARGET_HOST:?Invalid environment variable: please export QTRPI_TARGET_HOST.}"
+
+    validate_var_qtrpi_qt_version
+    validate_var_qtrpi_target_device
+    validate_var_qtrpi_target_host
+
+}
+
 
 ROOT=${QTRPI_ROOT-/opt/qtrpi}
 TARGET_DEVICE=${QTRPI_TARGET_DEVICE-'linux-rasp-pi2-g++'}
@@ -43,18 +94,6 @@ fi
 # exclude new lines from array
 readarray -t QT_MODULES < $(realpath $UTILS_DIR/../)/qt-modules.txt
 
-function message() {
-    echo
-    echo '--------------------------------------------------------------------'
-    echo $1
-    echo '--------------------------------------------------------------------'
-}
-
-function exit_error() {
-    echo $1
-    exit -1
-}
-
 function cd_root() {
     if [[ ! -d $ROOT ]]; then
         exit_error "$ROOT directory does not exist. Please initialize it."