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use sh shell instead of Bash #543

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use sh shell instead of Bash #543

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f47474b
Change Bash shebang
badersur Jun 25, 2017
fa48abc
Use sh syntax
badersur Jun 27, 2017
3daa17a
Use sh syntax (round 2)
badersur Jun 28, 2017
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107 changes: 54 additions & 53 deletions install.sh
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
#!/bin/sh
#!/usr/bin/env sh
set -e

reset="\033[0m"
Expand All @@ -10,101 +10,101 @@ white="\033[37m"
gpg_key=9D41F3C3

yarn_get_tarball() {
printf "$cyan> Downloading tarball...$reset\n"
echo "${cyan}> Downloading tarball...${reset}"
if [ "$1" = '--nightly' ]; then
url=https://nightly.yarnpkg.com/latest.tar.gz
elif [ "$1" = '--rc' ]; then
url=https://yarnpkg.com/latest-rc.tar.gz
elif [ "$1" = '--version' ]; then
# Validate that the version matches MAJOR.MINOR.PATCH to avoid garbage-in/garbage-out behavior
version=$2
if echo $version | grep -qE "^[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+$"; then
if echo "$version" | grep -qE "^[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+$"; then
url="https://yarnpkg.com/downloads/$version/yarn-v$version.tar.gz"
else
printf "$red> Version number must match MAJOR.MINOR.PATCH.$reset\n"
echo "${red}> Version number must match MAJOR.MINOR.PATCH.${reset}"
exit 1;
fi
else
url=https://yarnpkg.com/latest.tar.gz
fi
# Get both the tarball and its GPG signature
tarball_tmp=`mktemp -t yarn.tar.gz.XXXXXXXXXX`
tarball_tmp=$(mktemp -t yarn.tar.gz.XXXXXXXXXX)
if curl --fail -L -o "$tarball_tmp#1" "$url{,.asc}"; then
yarn_verify_integrity $tarball_tmp
yarn_verify_integrity "$tarball_tmp"

printf "$cyan> Extracting to ~/.yarn...$reset\n"
echo "${cyan}> Extracting to ~/.yarn...${reset}"
mkdir .yarn
tar zxf $tarball_tmp -C .yarn --strip 1 # extract tarball
rm $tarball_tmp*
tar zxf "$tarball_tmp" -C .yarn --strip 1 # extract tarball
rm $tarball_tmp* # Ignore shellcheck warning; it's intended to have globbing!
else
printf "$red> Failed to download $url.$reset\n"
echo "${red}> Failed to download ${url}.${reset}"
exit 1;
fi
}

# Verifies the GPG signature of the tarball
yarn_verify_integrity() {
# Check if GPG is installed
if [[ -z "$(command -v gpg)" ]]; then
printf "$yellow> WARNING: GPG is not installed, integrity can not be verified!$reset\n"
if [ -z "$(command -v gpg)" ]; then
echo "${yellow}> WARNING: GPG is not installed, integrity can not be verified!${reset}"
return
fi

if [ "$YARN_GPG" == "no" ]; then
printf "$cyan> WARNING: Skipping GPG integrity check!$reset\n"
if [ "$YARN_GPG" = "no" ]; then
echo "${cyan}> WARNING: Skipping GPG integrity check!${reset}"
return
fi

printf "$cyan> Verifying integrity...$reset\n"
echo "${cyan}> Verifying integrity...${reset}"
# Grab the public key if it doesn't already exist
gpg --list-keys $gpg_key >/dev/null 2>&1 || (curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | gpg --import)

if [ ! -f "$1.asc" ]; then
printf "$red> Could not download GPG signature for this Yarn release. This means the release can not be verified!$reset\n"
echo "${red}> Could not download GPG signature for this Yarn release. This means the release can not be verified!${reset}"
yarn_verify_or_quit "> Do you really want to continue?"
return
fi

# Actually perform the verification
if gpg --verify "$1.asc" $1; then
printf "$green> GPG signature looks good$reset\n"
if gpg --verify "$1.asc" "$1"; then
echo "${green}> GPG signature looks good.${reset}"
else
printf "$red> GPG signature for this Yarn release is invalid! This is BAD and may mean the release has been tampered with. It is strongly recommended that you report this to the Yarn developers.$reset\n"
echo "${red}> GPG signature for this Yarn release is invalid! This is BAD and may mean the release has been tampered with. It is strongly recommended that you report this to the Yarn developers.${reset}"
yarn_verify_or_quit "> Do you really want to continue?"
fi
}

yarn_link() {
printf "$cyan> Adding to \$PATH...$reset\n"
echo "${cyan}> Adding to \$PATH...${reset}"
YARN_PROFILE="$(yarn_detect_profile)"
SOURCE_STR="\nexport PATH=\"\$HOME/.yarn/bin:\$PATH\"\n"

if [ -z "${YARN_PROFILE-}" ] ; then
printf "$red> Profile not found. Tried ${YARN_PROFILE} (as defined in \$PROFILE), ~/.bashrc, ~/.bash_profile, ~/.zshrc, and ~/.profile.\n"
if [ -z "${YARN_PROFILE-}" ]; then
echo "${red}> Profile not found. Tried ${YARN_PROFILE} (as defined in \$PROFILE), ~/.bashrc, ~/.bash_profile, ~/.zshrc, and ~/.profile."
echo "> Create one of them and run this script again"
echo "> Create it (touch ${YARN_PROFILE}) and run this script again"
echo " OR"
printf "> Append the following lines to the correct file yourself:$reset\n"
echo "> Append the following lines to the correct file yourself:${reset}"
command printf "${SOURCE_STR}"
else
if ! grep -q 'yarn' "$YARN_PROFILE"; then
if [[ $YARN_PROFILE == *"fish"* ]]; then
command fish -c 'set -U fish_user_paths $fish_user_paths ~/.yarn/bin'
if echo "$YARN_PROFILE" | grep -q "fish"; then
command fish -c "set -U fish_user_paths ${fish_user_paths} ~/.yarn/bin"
else
command printf "$SOURCE_STR" >> "$YARN_PROFILE"
fi
fi

printf "$cyan> We've added the following to your $YARN_PROFILE\n"
echo "${cyan}> We've added the following to your ${YARN_PROFILE}"
echo "> If this isn't the profile of your current shell then please add the following to your correct profile:"
printf " $SOURCE_STR$reset\n"
echo " ${SOURCE_STR}${reset}"

version=`$HOME/.yarn/bin/yarn --version` || (
printf "$red> Yarn was installed, but doesn't seem to be working :(.$reset\n"
version=$("$HOME"/.yarn/bin/yarn --version) || (
echo "${red}> Yarn was installed, but doesn't seem to be working :(.${reset}"
exit 1;
)

printf "$green> Successfully installed Yarn $version! Please open another terminal where the \`yarn\` command will now be available.$reset\n"
echo "${green}> Successfully installed Yarn ${version}! Please open another terminal where the \`yarn\` command will now be available.${reset}"
fi
}

Expand All @@ -114,9 +114,9 @@ yarn_detect_profile() {
return
fi

local DETECTED_PROFILE
# local DETECTED_PROFILE
DETECTED_PROFILE=''
local SHELLTYPE
# local SHELLTYPE
SHELLTYPE="$(basename "/$SHELL")"

if [ "$SHELLTYPE" = "bash" ]; then
Expand Down Expand Up @@ -155,58 +155,59 @@ yarn_reset() {
}

yarn_install() {
printf "${white}Installing Yarn!$reset\n"
echo "${white}Installing Yarn!${reset}"

if [ -d "$HOME/.yarn" ]; then
if which yarn; then
local latest_url
local specified_version
local version_type
# local latest_url
# local specified_version
# local version_type
if [ "$1" = '--nightly' ]; then
latest_url=https://nightly.yarnpkg.com/latest-tar-version
specified_version=`curl -sS $latest_url`
specified_version=$(curl -sS $latest_url)
version_type='latest'
elif [ "$1" = '--version' ]; then
specified_version=$2
version_type='specified'
elif [ "$1" = '--rc' ]; then
latest_url=https://yarnpkg.com/latest-rc-version
specified_version=`curl -sS $latest_url`
specified_version=$(curl -sS $latest_url)
version_type='rc'
else
latest_url=https://yarnpkg.com/latest-version
specified_version=`curl -sS $latest_url`
specified_version=$(curl -sS $latest_url)
version_type='latest'
fi
yarn_version=`yarn -V`
yarn_alt_version=`yarn --version`
if [ "$specified_version" = "$yarn_version" -o "$specified_version" = "$yarn_alt_version" ]; then
printf "$green> Yarn is already at the $specified_version version.$reset\n"
yarn_version=$(yarn -V)
yarn_alt_version=$(yarn --version)
if [ "$specified_version" = "$yarn_version" ] || [ "$specified_version" = "$yarn_alt_version" ]; then
echo "${green}> Yarn is already at the ${specified_version} version.${reset}"
exit 0
else
rm -rf "$HOME/.yarn"
fi
else
printf "$red> $HOME/.yarn already exists, possibly from a past Yarn install.$reset\n"
printf "$red> Remove it (rm -rf $HOME/.yarn) and run this script again.$reset\n"
echo "${red}> ${HOME}/.yarn already exists, possibly from a past Yarn install."
echo "$> Remove it (rm -rf ${HOME}/.yarn) and run this script again.${reset}"
exit 0
fi
fi

yarn_get_tarball $1 $2
yarn_get_tarball "$1" "$2"
yarn_link
yarn_reset
}

yarn_verify_or_quit() {
read -p "$1 [y/N] " -n 1 -r
echo
if [[ ! $REPLY =~ ^[Yy]$ ]]
then
printf "$red> Aborting$reset\n"
echo "$1 [y/N] \c"
read -r REPLY

case $REPLY in [!yY]* )
echo "${red}> Aborting${reset}"
exit 1
fi
;;
esac
}

cd ~
yarn_install $1 $2
yarn_install "$1" "$2"