Add build script and fix helper for mobile (#32)

* update build and fix helper for mobile

* Update readme, changelog and script cleanup

Co-authored-by: wussler <aron@wussler.it>

build.sh

@@ -0,0 +1,101 @@
+#!/bin/bash
+
+PACKAGE_PATH="github.com/ProtonMail/gopenpgp"
+cd "${GOPATH}"/src/${PACKAGE_PATH} || exit
+if ! [ -L "v2" ]; then
+  ln -s . v2
+fi
+
+printf "\e[0;32mStart installing vendor \033[0m\n\n"
+export GO111MODULE=on
+go mod vendor
+printf "\e[0;32mDone \033[0m\n\n"
+
+OUTPUT_PATH="dist"
+
+ANDROID_OUT=${OUTPUT_PATH}/"Android"
+ANDROID_OUT_FILE_NAME="gopenpgp"
+ANDROID_OUT_FILE=${ANDROID_OUT}/${ANDROID_OUT_FILE_NAME}.aar
+ANDROID_JAVA_PAG="com.proton.${ANDROID_OUT_FILE_NAME}"
+
+IOS_OUT=${OUTPUT_PATH}/"iOS"
+IOS_OUT_FILE_NAME="Crypto"
+IOS_OUT_FILE=${IOS_OUT}/${IOS_OUT_FILE_NAME}.framework
+
+
+
+mkdir -p $ANDROID_OUT
+mkdir -p $IOS_OUT
+
+install() 
+{
+    INSTALL_NAME=$1
+    FROM_PATH=$2
+    INSTALL_PATH=$3
+    if [[ -z "${INSTALL_PATH}" ]]; then
+        printf "\e[0;32m ${INSTALL_NAME} project path is undefined! ignore this !\033[0m\n";
+    else 
+        printf "\n\e[0;32mDo you wise to install the library into ${INSTALL_NAME} project \033[0m\n"
+        printf "\e[0;37m${INSTALL_NAME} Project Path: \033[0m" 
+        printf "\e[0;37m${INSTALL_PATH} \033[0m" 
+        printf "\n"
+        while true; do
+            read -p "[Yy] or [Nn]:" yn
+            case $yn in
+                [Yy]* )
+                    printf "\e[0;32m  Installing .... \033[0m\n";
+                    cp -rf ${FROM_PATH} ${INSTALL_PATH}/
+                    printf "\n\e[0;32mInstalled \033[0m\n\n"
+                    break;;
+                [Nn]* ) exit;;
+                * ) echo "Please answer yes or no.";;
+            esac
+        done
+    fi
+}
+
+# import function, add internal package in the build
+import()
+{
+    PACKAGES=" ${PACKAGES} ${PACKAGE_PATH}/v2/$1"
+}
+
+external() 
+{
+    PACKAGES="${PACKAGES} $1"
+}
+
+######## MARK -- Main
+
+#flags
+DFLAGS="-s -w"
+
+PACKAGES=""
+#add internal package 
+## crypto must be the first one, and the framework name better same with the first package name
+import crypto 
+import armor 
+import constants 
+import models 
+import subtle 
+import helper
+
+## add external package
+if [ "$1" != '' ]; then
+  external $1
+fi
+
+printf "PACKAGES: ${PACKAGES}\n"
+## start building
+
+printf "\e[0;32mStart Building iOS framework .. Location: ${IOS_OUT} \033[0m\n\n"
+gomobile bind -target ios -o ${IOS_OUT_FILE} -ldflags="${DFLAGS}" ${PACKAGES}
+# install iOS  ${IOS_OUT_FILE} ${IOS_PROJECT_PATH}
+
+printf "\e[0;32mStart Building Android lib .. Location: ${ANDROID_OUT} \033[0m\n\n"
+gomobile bind -target android -javapkg ${ANDROID_JAVA_PAG} -o ${ANDROID_OUT_FILE} -ldflags="${DFLAGS}" ${PACKAGES}
+# install Android ${ANDROID_OUT} ${ANDROID_PROJECT_PATH}
+
+printf "\e[0;32mInstalling frameworks. \033[0m\n\n"
+
+printf "\e[0;32mAll Done. \033[0m\n\n"