chore(build): slightly refactor bootstrap.sh

Also adjust style.

bootstrap.sh

@@ -20,7 +20,8 @@
 set -eu -o pipefail
 
 # windows check
-if cmd.exe /c ver 2>/dev/null ; then
+if cmd.exe /c ver 2>/dev/null
+then
     cd windows
     ./bootstrap.sh
     exit $?
@@ -37,12 +38,13 @@ readonly INSTALL_DIR=libs
 # just for convenience
 readonly BASE_DIR="${SCRIPT_DIR}/${INSTALL_DIR}"
 
-# toxcore version to checkout
+# versions of libs to checkout
 readonly TOXCORE_VERSION="v0.1.2"
+readonly SQLCIPHER_VERSION="v3.4.0"
 
 # directory names of cloned repositories
 readonly TOXCORE_DIR="libtoxcore-$TOXCORE_VERSION"
-readonly SQLCIPHER_DIR="sqlcipher-stable"
+readonly SQLCIPHER_DIR="sqlcipher-$SQLCIPHER_VERSION"
 
 # default values for user given parameters
 INSTALL_TOX=true
@@ -51,38 +53,13 @@ SYSTEM_WIDE=true
 KEEP_BUILD_FILES=false
 
 # if Fedora, by default install sqlcipher
-if which dnf &> /dev/null ; then
+if which dnf &> /dev/null
+then
     INSTALL_SQLCIPHER=true
 fi
 
 
-########## parse input parameters ##########
-while [ $# -ge 1 ] ; do
-    if [ ${1} = "--with-tox" ] ; then
-        INSTALL_TOX=true
-        shift
-    elif [ ${1} = "--without-tox" ] ; then
-        INSTALL_TOX=false
-        shift
-    elif [ ${1} = "--with-sqlcipher" ] ; then
-        INSTALL_SQLCIPHER=true
-        shift
-    elif [ ${1} = "--without-sqlcipher" ] ; then
-        INSTALL_SQLCIPHER=false
-        shift
-    elif [ ${1} = "-l" -o ${1} = "--local" ] ; then
-        SYSTEM_WIDE=false
-        shift
-    elif [ ${1} = "-k" -o ${1} = "--keep" ]; then
-        KEEP_BUILD_FILES=true
-        shift
-    else
-        if [ ${1} != "-h" -a ${1} != "--help" ] ; then
-            echo "[ERROR] Unknown parameter \"${1}\""
-            echo ""
-        fi
-
-        # print help
+print_help() {
     echo "Use this script to install/update libtoxcore"
     echo ""
     echo "usage:"
@@ -99,22 +76,15 @@ while [ $# -ge 1 ] ; do
     echo ""
     echo "example usages:"
     echo "    ${0}    -- install libtoxcore"
-        exit 1
-    fi
-done
-
+}
 
 ############ print debug output ############
+print_debug_output() {
     echo "with tox                    : ${INSTALL_TOX}"
     echo "with sqlcipher              : ${INSTALL_SQLCIPHER}"
     echo "install system-wide         : ${SYSTEM_WIDE}"
     echo "keep build files            : ${KEEP_BUILD_FILES}"
-
-
-############### prepare step ###############
-# create BASE_DIR directory if necessary
-mkdir -p "${BASE_DIR}"
-
+}
 
 # remove not needed dirs
 remove_build_dirs() {
@@ -122,16 +92,9 @@ remove_build_dirs() {
     rm -rf "${BASE_DIR}/${SQLCIPHER_DIR}"
 }
 
-
-# maybe an earlier run of this script failed
-# thus we should remove the cloned repositories
-# if exists, otherwise cloning them may fail
-remove_build_dirs
-
-
-############### install step ###############
-#install libtoxcore
-if [[ $INSTALL_TOX = "true" ]]; then
+install_toxcore() {
+    if [[ $INSTALL_TOX = "true" ]]
+    then
         git clone https://github.com/toktok/c-toxcore.git \
             --branch $TOXCORE_VERSION \
             --depth 1 \
@@ -141,7 +104,8 @@ if [[ $INSTALL_TOX = "true" ]]; then
         ./autogen.sh
 
         # configure
-    if [[ $SYSTEM_WIDE = "false" ]]; then
+        if [[ $SYSTEM_WIDE = "false" ]]
+        then
             ./configure --prefix=${BASE_DIR}
         else
             ./configure
@@ -159,7 +123,8 @@ if [[ $INSTALL_TOX = "true" ]]; then
         make -j $(nproc)
 
         # install
-    if [[ $SYSTEM_WIDE = "false" ]]; then
+        if [[ $SYSTEM_WIDE = "false" ]]
+        then
             make install
         else
             sudo make install
@@ -168,19 +133,22 @@ if [[ $INSTALL_TOX = "true" ]]; then
 
         popd
     fi
+}
 
 
-#install sqlcipher
-if [[ $INSTALL_SQLCIPHER = "true" ]]; then
+install_sqlcipher() {
+    if [[ $INSTALL_SQLCIPHER = "true" ]]
+    then
         git clone https://github.com/sqlcipher/sqlcipher.git \
             "${BASE_DIR}/${SQLCIPHER_DIR}" \
-        --depth 1 \
-        --branch v3.4.0
+            --branch $SQLCIPHER_VERSION \
+            --depth 1
 
         pushd "${BASE_DIR}/${SQLCIPHER_DIR}"
         autoreconf -if
 
-    if [[ $SYSTEM_WIDE = "false" ]]; then
+        if [[ $SYSTEM_WIDE = "false" ]]
+        then
             ./configure --prefix="${BASE_DIR}" \
                 --enable-tempstore=yes \
                 CFLAGS="-DSQLITE_HAS_CODEC"
@@ -202,10 +170,71 @@ if [[ $INSTALL_SQLCIPHER = "true" ]]; then
 
         popd
     fi
+}
+
+
+main() {
+    ########## parse input parameters ##########
+    while [ $# -ge 1 ]
+    do
+        if [ ${1} = "--with-tox" ]
+        then
+            INSTALL_TOX=true
+            shift
+        elif [ ${1} = "--without-tox" ]
+        then
+            INSTALL_TOX=false
+            shift
+        elif [ ${1} = "--with-sqlcipher" ]
+        then
+            INSTALL_SQLCIPHER=true
+            shift
+        elif [ ${1} = "--without-sqlcipher" ]
+        then
+            INSTALL_SQLCIPHER=false
+            shift
+        elif [ ${1} = "-l" -o ${1} = "--local" ]
+        then
+            SYSTEM_WIDE=false
+            shift
+        elif [ ${1} = "-k" -o ${1} = "--keep" ]
+        then
+            KEEP_BUILD_FILES=true
+            shift
+        else
+            if [ ${1} != "-h" -a ${1} != "--help" ]
+            then
+                echo "[ERROR] Unknown parameter \"${1}\""
+                echo ""
+                print_help
+                exit 1
+            fi
+
+            print_help
+            exit 0
+        fi
+    done
+
+    print_debug_output
 
+    ############### prepare step ###############
+    # create BASE_DIR directory if necessary
+    mkdir -p "${BASE_DIR}"
+
+    # maybe an earlier run of this script failed
+    # thus we should remove the cloned repositories
+    # if they exist, otherwise cloning them may fail
+    remove_build_dirs
+
+    ############### install step ###############
+    install_toxcore
+    install_sqlcipher
 
     ############### cleanup step ###############
     # remove cloned repositories
-if [[ $KEEP_BUILD_FILES = "false" ]]; then
+    if [[ $KEEP_BUILD_FILES = "false" ]]
+    then
         remove_build_dirs
     fi
+}
+main $@