fzf/install

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#!/usr/bin/env bash
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set -u
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[[ "$@" =~ --pre ]] && version=0.10.9 pre=1 ||
version=0.10.9 pre=0
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auto_completion=
key_bindings=
update_config=1
help() {
cat << EOF
usage: $0 [OPTIONS]
--help Show this message
--bin Download fzf binary only
--all Download fzf binary and update configuration files
to enable key bindings and fuzzy completion
--[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
EOF
}
for opt in $@; do
case $opt in
--help)
help
exit 0
;;
--all)
auto_completion=1
key_bindings=1
update_config=1
;;
--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) ;;
*)
echo "unknown option: $opt"
help
exit 1
;;
esac
done
cd $(dirname $BASH_SOURCE)
fzf_base="$(pwd)"
# If stdin is a tty, we are "interactive".
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interactive=
[ -t 0 ] && interactive=yes
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ask() {
# non-interactive shell: wait for a linefeed
# interactive shell: continue after a single keypress
[ -n "$interactive" ] && read_n='-n 1' || read_n=
read -p "$1 ([y]/n) " $read_n -r
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echo
[[ $REPLY =~ ^[Nn]$ ]]
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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)
if [ $? -ne 0 ]; then
echo "Error: $output"
binary_error="Invalid binary"
elif [ "$version" != "$output" ]; then
echo "$output != $version"
binary_error="Invalid version"
else
echo "$output"
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binary_error=""
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return 0
fi
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rm -f "$fzf_base"/bin/fzf
return 1
}
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symlink() {
echo " - Creating symlink: bin/$1 -> bin/fzf"
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(cd "$fzf_base"/bin &&
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rm -f fzf &&
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ln -sf $1 fzf)
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if [ $? -ne 0 ]; then
binary_error="Failed to create symlink"
return 1
fi
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}
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download() {
echo "Downloading bin/fzf ..."
if [ $pre = 0 ]; then
if [ -x "$fzf_base"/bin/fzf ]; then
echo " - Already exists"
check_binary && return
fi
if [ -x "$fzf_base"/bin/$1 ]; then
symlink $1 && check_binary && return
fi
if which_fzf="$(which fzf 2> /dev/null)"; then
echo " - Found in \$PATH"
echo " - Creating symlink: $which_fzf -> bin/fzf"
(cd "$fzf_base"/bin && rm -f fzf && ln -sf "$which_fzf" fzf)
check_binary && return
fi
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fi
mkdir -p "$fzf_base"/bin && cd "$fzf_base"/bin
if [ $? -ne 0 ]; then
binary_error="Failed to create bin directory"
return
fi
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local url=https://github.com/junegunn/fzf-bin/releases/download/$version/${1}.tgz
if which curl > /dev/null; then
curl -fL $url | tar -xz
elif which wget > /dev/null; then
wget -O - $url | tar -xz
else
binary_error="curl or wget not found"
return
fi
if [ ! -f $1 ]; then
binary_error="Failed to download ${1}"
return
fi
chmod +x $1 && symlink $1 && check_binary
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}
# Try to download binary executable
archi=$(uname -sm)
binary_available=1
binary_error=""
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case "$archi" in
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Darwin\ x86_64) download fzf-$version-darwin_amd64 ;;
Darwin\ i*86) download fzf-$version-darwin_386 ;;
Linux\ x86_64) download fzf-$version-linux_amd64 ;;
Linux\ i*86) download fzf-$version-linux_386 ;;
*) binary_available=0 binary_error=1 ;;
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esac
cd "$fzf_base"
if [ -n "$binary_error" ]; then
if [ $binary_available -eq 0 ]; then
echo "No prebuilt binary for $archi ... "
else
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echo " - $binary_error !!!"
exit 1
fi
echo "Installing legacy Ruby version ..."
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# ruby executable
echo -n "Checking Ruby executable ... "
ruby=`which ruby`
if [ $? -ne 0 ]; then
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echo "ruby executable not found !!!"
exit 1
fi
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# System ruby is preferred
system_ruby=/usr/bin/ruby
if [ -x $system_ruby -a $system_ruby != "$ruby" ]; then
$system_ruby --disable-gems -rcurses -e0 2> /dev/null
[ $? -eq 0 ] && ruby=$system_ruby
fi
echo "OK ($ruby)"
# Curses-support
echo -n "Checking Curses support ... "
"$ruby" -rcurses -e0 2> /dev/null
if [ $? -eq 0 ]; then
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echo "OK"
else
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echo "Not found"
echo "Installing 'curses' gem ... "
if (( EUID )); then
/usr/bin/env gem install curses --user-install
else
/usr/bin/env gem install curses
fi
if [ $? -ne 0 ]; then
echo
echo "Failed to install 'curses' gem."
if [[ $(uname -r) =~ 'ARCH' ]]; then
echo "Make sure that base-devel package group is installed."
fi
exit 1
fi
fi
# Ruby version
echo -n "Checking Ruby version ... "
"$ruby" -e 'exit RUBY_VERSION >= "1.9"'
if [ $? -eq 0 ]; then
echo ">= 1.9"
"$ruby" --disable-gems -rcurses -e0 2> /dev/null
if [ $? -eq 0 ]; then
fzf_cmd="$ruby --disable-gems $fzf_base/fzf"
else
fzf_cmd="$ruby $fzf_base/fzf"
fi
else
echo "< 1.9"
fzf_cmd="$ruby $fzf_base/fzf"
fi
# Create fzf script
echo -n "Creating wrapper script for fzf ... "
rm -f "$fzf_base"/bin/fzf
echo "#!/bin/sh" > "$fzf_base"/bin/fzf
echo "$fzf_cmd \"\$@\"" >> "$fzf_base"/bin/fzf
chmod +x "$fzf_base"/bin/fzf
echo "OK"
fi
[[ "$*" =~ "--bin" ]] && exit 0
# Auto-completion
if [ -z "$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=$?
fi
echo
for shell in bash zsh; do
echo -n "Generate ~/.fzf.$shell ... "
src=~/.fzf.${shell}
fzf_completion="[[ \$- == *i* ]] && source \"$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/bin* ]]; then
export PATH="\$PATH:$fzf_base/bin"
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fi
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# Man path
# --------
if [[ ! "\$MANPATH" == *$fzf_base/man* && -d "$fzf_base/man" ]]; then
export MANPATH="\$MANPATH:$fzf_base/man"
fi
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# Auto-completion
# ---------------
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$fzf_completion
# Key bindings
# ------------
$fzf_key_bindings
EOF
echo "OK"
done
# fish
has_fish=0
if [ -n "$(which fish 2> /dev/null)" ]; then
has_fish=1
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 ~/.config/fish/functions
if [ -e ~/.config/fish/functions/fzf.fish ]; then
echo -n "Remove unnecessary ~/.config/fish/functions/fzf.fish ... "
rm -f ~/.config/fish/functions/fzf.fish && echo "OK" || echo "Failed"
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fi
fish_binding=~/.config/fish/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 skip line file pat lno
skip="$1"
line="$2"
file="$3"
pat="${4:-}"
echo "Update $file:"
echo " - $line"
[ -f "$file" ] || touch "$file"
if [ $# -lt 4 ]; then
lno=$(\grep -nF "$line" "$file" | sed 's/:.*//' | tr '\n' ' ')
else
lno=$(\grep -nF "$pat" "$file" | sed 's/:.*//' | tr '\n' ' ')
fi
if [ -n "$lno" ]; then
echo " - Already exists: line #$lno"
else
if [ $skip -eq 1 ]; then
echo >> "$file"
echo "$line" >> "$file"
echo " + Added"
else
echo " ~ Skipped"
fi
fi
echo
set +e
}
echo
for shell in bash zsh; do
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[ $shell = zsh ] && dest=${ZDOTDIR:-~}/.zshrc || dest=~/.bashrc
append_line $update_config "[ -f ~/.fzf.${shell} ] && source ~/.fzf.${shell}" "$dest" "~/.fzf.${shell}"
done
if [ $key_bindings -eq 1 -a $has_fish -eq 1 ]; then
bind_file=~/.config/fish/functions/fish_user_key_bindings.fish
append_line $update_config "fzf_key_bindings" "$bind_file"
fi
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cat << EOF
Finished. Restart your shell or reload config file.
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source ~/.bashrc # bash
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source ${ZDOTDIR:-~}/.zshrc # zsh
EOF
[ $has_fish -eq 1 ] && echo " fzf_key_bindings # fish"; cat << EOF
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Use uninstall script to remove fzf.
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For more information, see: https://github.com/junegunn/fzf
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EOF
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