add flutter

flutter/flutter.bash

@@ -0,0 +1,110 @@
+#!/bin/bash
+
+# title: Flutter
+# homepage: https://flutter.dev
+# tagline: UI Toolkit for mobile, web, and desktop
+# description: |
+#   Flutter is Google’s UI toolkit for building beautiful, natively compiled applications for mobile, web, and desktop from a single codebase.
+
+set -e
+set -u
+
+FLUTTER_VER=${WEBI_VERSION:-}
+FLUTTER_VER="${FLUTTER_VER:-v}"
+EXT="tar.xz"
+FLUTTER_PATH=""
+
+FLUTTER_OS="${WEBI_OS}" # linux or darwin
+if [ "darwin" == "$FLUTTER_OS" ]; then
+  FLUTTER_OS="macos"
+  EXT="zip"
+fi
+
+my_tmp="$WEBI_TMP"
+sudo_cmd="$WEBI_SUDO"
+
+#########
+# BEGIN #
+#########
+
+get_flutter_version() {
+  my_char="."
+  my_count=$(awk -F"${my_char}" '{print NF-1}' <<< "${FLUTTER_VER}")
+  # get the latest version if partial
+  if [ $my_count -ne 2 ]; then
+    if [ "$FLUTTER_VER" != "v" ]; then
+      FLUTTER_VER="$FLUTTER_VER\\."
+    fi
+    get_http=""
+    if [ -n "$(type -p curl)" ]; then
+      get_http="curl -fsL"
+    elif [ -n "$(type -p wget)" ]; then
+      get_http="wget --quiet -O -"
+    else
+      echo "Found neither 'curl' nor 'wget'. Can't Continue."
+      exit 1
+    fi
+  fi
+  FLUTTER_PATH=$($get_http "https://storage.googleapis.com/flutter_infra/releases/releases_${FLUTTER_OS}.json" | grep ${FLUTTER_OS} | grep ${FLUTTER_VER} | grep stable | head -n 1 | cut -d '"' -f 4) \
+        || echo 'error automatically determining current Flutter version'
+  FLUTTER_VER=$(echo $FLUTTER_PATH | sed 's/.*flutter_.*_v//' | sed 's/-stable.*//')
+}
+
+get_flutter_version
+
+#
+# flutter
+#
+flutter_install_path=$HOME/.local/opt/flutter_${FLUTTER_VER}
+mkdir -p "$flutter_install_path"
+
+# TODO warn if existing flutter in path my take precedence
+if [ -e "$flutter_install_path/bin/flutter" ]; then
+  # flutter of some version is already installed
+  echo "${FLUTTER_VER}" == "$($flutter_install_path/bin/flutter --version)"
+  if [ "${FLUTTER_VER}" == "$($flutter_install_path/bin/flutter --version | cut -d ' ' -f 3 2>/dev/null)" ]; then
+    echo ${FLUTTER_VER} already installed at $flutter_install_path
+    exit 0
+  fi
+fi
+
+# flutter_linux_v0.9.0-dev # flutter_linux_v0.9.0-dev.tar.xz
+FLUTTER_PRE="flutter_${FLUTTER_OS}_${FLUTTER_VER}-stable"
+FLUTTER_REMOTE="https://storage.googleapis.com/flutter_infra/releases/${FLUTTER_PATH}"
+FLUTTER_LOCAL="$my_tmp/${FLUTTER_PRE}.${EXT}"
+FLUTTER_UNTAR="$my_tmp/${FLUTTER_PRE}"
+
+if [ -n "$(command -v curl 2>/dev/null | grep curl)" ]; then
+  curl -fSL ${FLUTTER_REMOTE} -o ${FLUTTER_LOCAL} || echo 'error downloading flutter'
+elif [ -n "$(command -v wget 2>/dev/null | grep wget)" ]; then
+  wget ${FLUTTER_REMOTE} -O ${FLUTTER_LOCAL} || echo 'error downloading flutter'
+else
+  echo "'wget' and 'curl' are missing. Please run the following command and try again"
+  echo "    sudo apt-get install --yes curl wget"
+  exit 1
+fi
+
+mkdir -p ${FLUTTER_UNTAR}/
+# --strip-components isn't portable, switch to portable version by performing move step after untar
+if [ "zip" == "$EXT" ]; then
+  pushd ${FLUTTER_UNTAR}/
+    unzip ${FLUTTER_LOCAL}
+  popd
+else
+  tar xf ${FLUTTER_LOCAL} -C ${FLUTTER_UNTAR}/ #--strip-components=1
+fi
+if [ -n "$(command -v rsync 2>/dev/null | grep rsync)" ]; then
+  echo $sudo_cmd rsync -Krl "${FLUTTER_UNTAR}"/flutter/ "$flutter_install_path/"
+  rsync -Krl "${FLUTTER_UNTAR}/" "$flutter_install_path/" 2>/dev/null || $sudo_cmd rsync -Krl "${FLUTTER_UNTAR}/" "$flutter_install_path/"
+else
+  echo $sudo_cmd cp -Hr "${FLUTTER_UNTAR}/"flutter/* "${FLUTTER_UNTAR}/"flutter/.* "$flutter_install_path/"
+  cp -Hr "${FLUTTER_UNTAR}"/* "$flutter_install_path/" 2>/dev/null || $sudo_cmd cp -Hr "${FLUTTER_UNTAR}"/* "$flutter_install_path/"
+fi
+rm -rf "${FLUTTER_UNTAR}"
+
+#######
+# END #
+#######
+
+# TODO add more than one at a time
+pathman add $flutter_install_path/bin