fzf/install

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#!/usr/bin/env bash
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set -u
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version=0.25.0
auto_completion=
key_bindings=
update_config=2
shells="bash zsh fish"
prefix='~/.fzf'
prefix_expand=~/.fzf
fish_dir=${XDG_CONFIG_HOME:-$HOME/.config}/fish
help() {
cat << EOF
usage: $0 [OPTIONS]
--help Show this message
--bin Download fzf binary only; Do not generate ~/.fzf.{bash,zsh}
--all Download fzf binary and update configuration files
to enable key bindings and fuzzy completion
--xdg Generate files under \$XDG_CONFIG_HOME/fzf
--[no-]key-bindings Enable/disable key bindings (CTRL-T, CTRL-R, ALT-C)
--[no-]completion Enable/disable fuzzy completion (bash & zsh)
--[no-]update-rc Whether or not to update shell configuration files
--no-bash Do not set up bash configuration
--no-zsh Do not set up zsh configuration
--no-fish Do not set up fish configuration
EOF
}
for opt in "$@"; do
case $opt in
--help)
help
exit 0
;;
--all)
auto_completion=1
key_bindings=1
update_config=1
;;
--xdg)
prefix='"${XDG_CONFIG_HOME:-$HOME/.config}"/fzf/fzf'
prefix_expand=${XDG_CONFIG_HOME:-$HOME/.config}/fzf/fzf
mkdir -p "${XDG_CONFIG_HOME:-$HOME/.config}/fzf"
;;
--key-bindings) key_bindings=1 ;;
--no-key-bindings) key_bindings=0 ;;
--completion) auto_completion=1 ;;
--no-completion) auto_completion=0 ;;
--update-rc) update_config=1 ;;
--no-update-rc) update_config=0 ;;
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--bin) ;;
--no-bash) shells=${shells/bash/} ;;
--no-zsh) shells=${shells/zsh/} ;;
--no-fish) shells=${shells/fish/} ;;
*)
echo "unknown option: $opt"
help
exit 1
;;
esac
done
cd "$(dirname "${BASH_SOURCE[0]}")"
fzf_base=$(pwd)
fzf_base_esc=$(printf %q "$fzf_base")
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ask() {
while true; do
read -p "$1 ([y]/n) " -r
REPLY=${REPLY:-"y"}
if [[ $REPLY =~ ^[Yy]$ ]]; then
return 1
elif [[ $REPLY =~ ^[Nn]$ ]]; then
return 0
fi
done
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}
check_binary() {
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echo -n " - Checking fzf executable ... "
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local output
output=$("$fzf_base"/bin/fzf --version 2>&1)
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if [ $? -ne 0 ]; then
echo "Error: $output"
binary_error="Invalid binary"
else
output=${output/ */}
if [ "$version" != "$output" ]; then
echo "$output != $version"
binary_error="Invalid version"
else
echo "$output"
binary_error=""
return 0
fi
fi
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rm -f "$fzf_base"/bin/fzf
return 1
}
link_fzf_in_path() {
if which_fzf="$(command -v fzf)"; then
echo " - Found in \$PATH"
echo " - Creating symlink: bin/fzf -> $which_fzf"
(cd "$fzf_base"/bin && rm -f fzf && ln -sf "$which_fzf" fzf)
check_binary && return
fi
return 1
}
try_curl() {
command -v curl > /dev/null &&
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if [[ $1 =~ tar.gz$ ]]; then
curl -fL $1 | tar -xzf -
else
local temp=${TMPDIR:-/tmp}/fzf.zip
curl -fLo "$temp" $1 && unzip -o "$temp" && rm -f "$temp"
fi
}
try_wget() {
command -v wget > /dev/null &&
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if [[ $1 =~ tar.gz$ ]]; then
wget -O - $1 | tar -xzf -
else
local temp=${TMPDIR:-/tmp}/fzf.zip
wget -O "$temp" $1 && unzip -o "$temp" && rm -f "$temp"
fi
}
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download() {
echo "Downloading bin/fzf ..."
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if [ -x "$fzf_base"/bin/fzf ]; then
echo " - Already exists"
check_binary && return
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fi
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link_fzf_in_path && return
mkdir -p "$fzf_base"/bin && cd "$fzf_base"/bin
if [ $? -ne 0 ]; then
binary_error="Failed to create bin directory"
return
fi
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local url
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url=https://github.com/junegunn/fzf/releases/download/$version/${1}
set -o pipefail
if ! (try_curl $url || try_wget $url); then
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set +o pipefail
binary_error="Failed to download with curl and wget"
return
fi
set +o pipefail
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if [ ! -f fzf ]; then
binary_error="Failed to download ${1}"
return
fi
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chmod +x fzf && check_binary
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}
# Try to download binary executable
archi=$(uname -sm)
binary_available=1
binary_error=""
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case "$archi" in
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Darwin\ *64) download fzf-$version-darwin_amd64.tar.gz ;;
Linux\ armv5*) download fzf-$version-linux_armv5.tar.gz ;;
Linux\ armv6*) download fzf-$version-linux_armv6.tar.gz ;;
Linux\ armv7*) download fzf-$version-linux_armv7.tar.gz ;;
Linux\ armv8*) download fzf-$version-linux_arm64.tar.gz ;;
Linux\ aarch64*) download fzf-$version-linux_arm64.tar.gz ;;
Linux\ *64) download fzf-$version-linux_amd64.tar.gz ;;
FreeBSD\ *64) download fzf-$version-freebsd_amd64.tar.gz ;;
OpenBSD\ *64) download fzf-$version-openbsd_amd64.tar.gz ;;
CYGWIN*\ *64) download fzf-$version-windows_amd64.zip ;;
MINGW*\ *64) download fzf-$version-windows_amd64.zip ;;
MSYS*\ *64) download fzf-$version-windows_amd64.zip ;;
Windows*\ *64) download fzf-$version-windows_amd64.zip ;;
*) binary_available=0 binary_error=1 ;;
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esac
cd "$fzf_base"
if [ -n "$binary_error" ]; then
if [ $binary_available -eq 0 ]; then
echo "No prebuilt binary for $archi ..."
else
echo " - $binary_error !!!"
fi
if command -v go > /dev/null; then
echo -n "Building binary (go get -u github.com/junegunn/fzf) ... "
if [ -z "${GOPATH-}" ]; then
export GOPATH="${TMPDIR:-/tmp}/fzf-gopath"
mkdir -p "$GOPATH"
fi
if go get -ldflags "-s -w -X main.version=$version -X main.revision=go-get" github.com/junegunn/fzf; then
echo "OK"
cp "$GOPATH/bin/fzf" "$fzf_base/bin/"
else
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echo "Failed to build binary. Installation failed."
exit 1
fi
else
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echo "go executable not found. Installation failed."
exit 1
fi
fi
[[ "$*" =~ "--bin" ]] && exit 0
for s in $shells; do
if ! command -v "$s" > /dev/null; then
shells=${shells/$s/}
fi
done
if [[ ${#shells} -lt 3 ]]; then
echo "No shell configuration to be updated."
exit 0
fi
# Auto-completion
if [ -z "$auto_completion" ]; then
ask "Do you want to enable fuzzy auto-completion?"
auto_completion=$?
fi
# Key-bindings
if [ -z "$key_bindings" ]; then
ask "Do you want to enable key bindings?"
key_bindings=$?
fi
echo
for shell in $shells; do
[[ "$shell" = fish ]] && continue
src=${prefix_expand}.${shell}
echo -n "Generate $src ... "
fzf_completion="[[ \$- == *i* ]] && source \"$fzf_base/shell/completion.${shell}\" 2> /dev/null"
if [ $auto_completion -eq 0 ]; then
fzf_completion="# $fzf_completion"
fi
fzf_key_bindings="source \"$fzf_base/shell/key-bindings.${shell}\""
if [ $key_bindings -eq 0 ]; then
fzf_key_bindings="# $fzf_key_bindings"
fi
cat > "$src" << EOF
# Setup fzf
# ---------
if [[ ! "\$PATH" == *$fzf_base_esc/bin* ]]; then
export PATH="\${PATH:+\${PATH}:}$fzf_base/bin"
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fi
# Auto-completion
# ---------------
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$fzf_completion
# Key bindings
# ------------
$fzf_key_bindings
EOF
echo "OK"
done
# fish
if [[ "$shells" =~ fish ]]; then
echo -n "Update fish_user_paths ... "
fish << EOF
echo \$fish_user_paths | \grep "$fzf_base"/bin > /dev/null
or set --universal fish_user_paths \$fish_user_paths "$fzf_base"/bin
EOF
[ $? -eq 0 ] && echo "OK" || echo "Failed"
mkdir -p "${fish_dir}/functions"
if [ -e "${fish_dir}/functions/fzf.fish" ]; then
echo -n "Remove unnecessary ${fish_dir}/functions/fzf.fish ... "
rm -f "${fish_dir}/functions/fzf.fish" && echo "OK" || echo "Failed"
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fi
fish_binding="${fish_dir}/functions/fzf_key_bindings.fish"
if [ $key_bindings -ne 0 ]; then
echo -n "Symlink $fish_binding ... "
ln -sf "$fzf_base/shell/key-bindings.fish" \
"$fish_binding" && echo "OK" || echo "Failed"
else
echo -n "Removing $fish_binding ... "
rm -f "$fish_binding"
echo "OK"
fi
fi
append_line() {
set -e
local update line file pat lno
update="$1"
line="$2"
file="$3"
pat="${4:-}"
lno=""
echo "Update $file:"
echo " - $line"
if [ -f "$file" ]; then
if [ $# -lt 4 ]; then
lno=$(\grep -nF "$line" "$file" | sed 's/:.*//' | tr '\n' ' ')
else
lno=$(\grep -nF "$pat" "$file" | sed 's/:.*//' | tr '\n' ' ')
fi
fi
if [ -n "$lno" ]; then
echo " - Already exists: line #$lno"
else
if [ $update -eq 1 ]; then
[ -f "$file" ] && echo >> "$file"
echo "$line" >> "$file"
echo " + Added"
else
echo " ~ Skipped"
fi
fi
echo
set +e
}
create_file() {
local file="$1"
shift
echo "Create $file:"
for line in "$@"; do
echo " $line"
echo "$line" >> "$file"
done
echo
}
if [ $update_config -eq 2 ]; then
echo
ask "Do you want to update your shell configuration files?"
update_config=$?
fi
echo
for shell in $shells; do
[[ "$shell" = fish ]] && continue
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[ $shell = zsh ] && dest=${ZDOTDIR:-~}/.zshrc || dest=~/.bashrc
append_line $update_config "[ -f ${prefix}.${shell} ] && source ${prefix}.${shell}" "$dest" "${prefix}.${shell}"
done
if [ $key_bindings -eq 1 ] && [[ "$shells" =~ fish ]]; then
bind_file="${fish_dir}/functions/fish_user_key_bindings.fish"
if [ ! -e "$bind_file" ]; then
create_file "$bind_file" \
'function fish_user_key_bindings' \
' fzf_key_bindings' \
'end'
else
append_line $update_config "fzf_key_bindings" "$bind_file"
fi
fi
if [ $update_config -eq 1 ]; then
echo 'Finished. Restart your shell or reload config file.'
if [[ "$shells" =~ bash ]]; then
echo -n ' source ~/.bashrc # bash'
[[ "$archi" =~ Darwin ]] && echo -n ' (.bashrc should be loaded from .bash_profile)'
echo
fi
[[ "$shells" =~ zsh ]] && echo " source ${ZDOTDIR:-~}/.zshrc # zsh"
[[ "$shells" =~ fish ]] && [ $key_bindings -eq 1 ] && echo ' fzf_key_bindings # fish'
echo
echo 'Use uninstall script to remove fzf.'
echo
fi
echo 'For more information, see: https://github.com/junegunn/fzf'