fzf/install

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#!/usr/bin/env bash
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cd `dirname $BASH_SOURCE`
fzf_base=`pwd`
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ARCHI=$(uname -sm)
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ask() {
read -p "$1 ([y]/n) " -n 1 -r
echo
[[ ! $REPLY =~ ^[Nn]$ ]]
}
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download() {
echo "Downloading fzf executable ($1) ..."
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if [ -x "$fzf_base"/bin/fzf ]; then
ask "- fzf already exists. Download it again?" || return 0
fi
mkdir -p "$fzf_base"/bin && cd "$fzf_base"/bin
if [ $? -ne 0 ]; then
echo "- Failed to create bin directory."
return 1
fi
local url=https://github.com/junegunn/fzf-bin/releases/download/snapshot/${1}.tar.gz
if which curl > /dev/null; then
curl -fL $url | tar -xz
elif which wget > /dev/null; then
wget -O - $url | tar -xz
else
echo "- curl or wget required to download fzf executable."
return 1
fi
if [ ! -f $1 ]; then
echo "- Failed to download ${1}."
return 1
fi
mv $1 fzf && chmod +x fzf && cd - > /dev/null && echo
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}
# Try to download binary executable
binary_available=0
downloaded=0
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if [ "$ARCHI" = "Darwin x86_64" ]; then
binary_available=1
download fzf_darwin_amd64 && downloaded=1
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elif [ "$ARCHI" = "Linux x86_64" ]; then
binary_available=1
download fzf_linux_amd64 && downloaded=1
fi
if [ $downloaded -ne 1 ]; then
if [ $binary_available -eq 0 ]; then
echo -n "No prebuilt binary for $ARCHI ... "
else
echo -n "Failed to download binary executable ... "
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 $fzf_base/fzf"
fi
fi
# Auto-completion
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ask "Do you want to add auto-completion support?"
auto_completion=$?
# Key-bindings
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ask "Do you want to add key bindings?"
key_bindings=$?
echo
for shell in bash zsh; do
echo -n "Generate ~/.fzf.$shell ... "
src=~/.fzf.${shell}
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fzf_completion="[[ \$- =~ i ]] && source $fzf_base/fzf-completion.${shell}"
if [ $auto_completion -ne 0 ]; then
fzf_completion="# $fzf_completion"
fi
cat > $src << EOF
# Setup fzf function
# ------------------
unalias fzf 2> /dev/null
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unset fzf 2> /dev/null
if [ -x "$fzf_base/bin/fzf" ]; then
if [[ ! "\$PATH" =~ "$fzf_base/bin" ]]; then
export PATH="$fzf_base/bin:\$PATH"
fi
else
fzf() {
$fzf_cmd "\$@"
}
export -f fzf > /dev/null
fi
# Auto-completion
# ---------------
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$fzf_completion
EOF
if [ $key_bindings -eq 0 ]; then
if [ $shell = bash ]; then
cat >> $src << "EOFZF"
# Key bindings
# ------------
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__fsel() {
command find * -path '*/\.*' -prune \
-o -type f -print \
-o -type d -print \
-o -type l -print 2> /dev/null | fzf -m | while read item; do
printf '%q ' "$item"
done
echo
}
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if [[ $- =~ i ]]; then
__fsel_tmux() {
local height
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height=${FZF_TMUX_HEIGHT:-40%}
if [[ $height =~ %$ ]]; then
height="-p ${height%\%}"
else
height="-l $height"
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fi
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tmux split-window $height "bash -c 'source ~/.fzf.bash; tmux send-keys -t $TMUX_PANE \"\$(__fsel)\"'"
}
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__fcd() {
local dir
dir=$(command find -L ${1:-*} -path '*/\.*' -prune -o -type d -print 2> /dev/null | fzf +m) && printf 'cd %q' "$dir"
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}
__use_tmux=0
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[ -n "$TMUX_PANE" -a ${FZF_TMUX:-1} -ne 0 -a ${LINES:-40} -gt 15 ] && __use_tmux=1
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if [ -z "$(set -o | \grep '^vi.*on')" ]; then
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# Required to refresh the prompt after fzf
bind '"\er": redraw-current-line'
# CTRL-T - Paste the selected file path into the command line
if [ $__use_tmux -eq 1 ]; then
bind '"\C-t": " \C-u \C-a\C-k$(__fsel_tmux)\e\C-e\C-y\C-a\C-d\C-y\ey\C-h"'
else
bind '"\C-t": " \C-u \C-a\C-k$(__fsel)\e\C-e\C-y\C-a\C-y\ey\C-h\C-e\er \C-h"'
fi
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# CTRL-R - Paste the selected command from history into the command line
bind '"\C-r": " \C-e\C-u$(HISTTIMEFORMAT= history | fzf +s +m -n2..,.. | sed \"s/ *[0-9]* *//\")\e\C-e\er"'
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# ALT-C - cd into the selected directory
bind '"\ec": " \C-e\C-u$(__fcd)\e\C-e\er\C-m"'
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else
bind '"\C-x\C-e": shell-expand-line'
bind '"\C-x\C-r": redraw-current-line'
# CTRL-T - Paste the selected file path into the command line
# - FIXME: Selected items are attached to the end regardless of cursor position
if [ $__use_tmux -eq 1 ]; then
bind '"\C-t": "\e$a \eddi$(__fsel_tmux)\C-x\C-e\e0P$xa"'
else
bind '"\C-t": "\e$a \eddi$(__fsel)\C-x\C-e\e0Px$a \C-x\C-r\exa "'
fi
bind -m vi-command '"\C-t": "i\C-t"'
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# CTRL-R - Paste the selected command from history into the command line
bind '"\C-r": "\eddi$(HISTTIMEFORMAT= history | fzf +s +m -n2..,.. | sed \"s/ *[0-9]* *//\")\C-x\C-e\e$a\C-x\C-r"'
bind -m vi-command '"\C-r": "i\C-r"'
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# ALT-C - cd into the selected directory
bind '"\ec": "\eddi$(__fcd)\C-x\C-e\C-x\C-r\C-m"'
bind -m vi-command '"\ec": "i\ec"'
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fi
unset __use_tmux
fi
EOFZF
else
cat >> $src << "EOFZF"
# Key bindings
# ------------
# CTRL-T - Paste the selected file path(s) into the command line
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__fsel() {
set -o nonomatch
command find * -path '*/\.*' -prune \
-o -type f -print \
-o -type d -print \
-o -type l -print 2> /dev/null | fzf -m | while read item; do
printf '%q ' "$item"
done
echo
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}
if [[ $- =~ i ]]; then
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if [ -n "$TMUX_PANE" -a ${FZF_TMUX:-1} -ne 0 -a ${LINES:-40} -gt 15 ]; then
fzf-file-widget() {
local height
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height=${FZF_TMUX_HEIGHT:-40%}
if [[ $height =~ %$ ]]; then
height="-p ${height%\%}"
else
height="-l $height"
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fi
tmux split-window $height "zsh -c 'source ~/.fzf.zsh; tmux send-keys -t $TMUX_PANE \"\$(__fsel)\"'"
}
else
fzf-file-widget() {
LBUFFER="${LBUFFER}$(__fsel)"
zle redisplay
}
fi
zle -N fzf-file-widget
bindkey '^T' fzf-file-widget
# ALT-C - cd into the selected directory
fzf-cd-widget() {
cd "${$(set -o nonomatch; command find -L * -path '*/\.*' -prune \
-o -type d -print 2> /dev/null | fzf):-.}"
zle reset-prompt
}
zle -N fzf-cd-widget
bindkey '\ec' fzf-cd-widget
# CTRL-R - Paste the selected command from history into the command line
fzf-history-widget() {
LBUFFER=$(fc -l 1 | fzf +s +m -n2..,.. | sed "s/ *[0-9*]* *//")
zle redisplay
}
zle -N fzf-history-widget
bindkey '^R' fzf-history-widget
fi
EOFZF
fi
fi
echo "OK"
done
# fish
has_fish=0
if [ -n "$(which fish)" ]; then
has_fish=1
echo -n "Generate ~/.config/fish/functions/fzf.fish ... "
mkdir -p ~/.config/fish/functions
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if [ $downloaded -eq 0 ]; then
cat > ~/.config/fish/functions/fzf.fish << EOFZF
function fzf
$fzf_cmd \$argv
end
EOFZF
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else
cat > ~/.config/fish/functions/fzf.fish << EOFZF
function fzf
$fzf_base/bin/fzf \$argv
end
EOFZF
fi
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echo "OK"
if [ $key_bindings -eq 0 ]; then
echo -n "Generate ~/.config/fish/functions/fzf_key_bindings.fish ... "
cat > ~/.config/fish/functions/fzf_key_bindings.fish << "EOFZF"
function fzf_key_bindings
# Due to a bug of fish, we cannot use command substitution,
# so we use temporary file instead
if [ -z "$TMPDIR" ]
set -g TMPDIR /tmp
end
function __fzf_list
command find * -path '*/\.*' -prune \
-o -type f -print \
-o -type d -print \
-o -type l -print 2> /dev/null
end
function __fzf_list_dir
command find -L * -path '*/\.*' -prune -o -type d -print 2> /dev/null
end
function __fzf_escape
while read item
echo -n (echo -n "$item" | sed -E 's/([ "$~'\''([{<>})])/\\\\\\1/g')' '
end
end
function __fzf_ctrl_t
if [ -n "$TMUX_PANE" -a "$FZF_TMUX" != "0" ]
tmux split-window (__fzf_tmux_height) "fish -c 'fzf_key_bindings; __fzf_ctrl_t_tmux \\$TMUX_PANE'"
else
__fzf_list | fzf -m > $TMPDIR/fzf.result
and commandline -i (cat $TMPDIR/fzf.result | __fzf_escape)
commandline -f repaint
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rm -f $TMPDIR/fzf.result
end
end
function __fzf_ctrl_t_tmux
__fzf_list | fzf -m > $TMPDIR/fzf.result
and tmux send-keys -t $argv[1] (cat $TMPDIR/fzf.result | __fzf_escape)
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rm -f $TMPDIR/fzf.result
end
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function __fzf_reverse
if which tac > /dev/null
tac $argv
else
tail -r $argv
end
end
function __fzf_ctrl_r
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history | __fzf_reverse | fzf +s +m > $TMPDIR/fzf.result
and commandline (cat $TMPDIR/fzf.result)
commandline -f repaint
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rm -f $TMPDIR/fzf.result
end
function __fzf_alt_c
# Fish hangs if the command before pipe redirects (2> /dev/null)
__fzf_list_dir | fzf +m > $TMPDIR/fzf.result
[ (cat $TMPDIR/fzf.result | wc -l) -gt 0 ]
and cd (cat $TMPDIR/fzf.result)
commandline -f repaint
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rm -f $TMPDIR/fzf.result
end
function __fzf_tmux_height
if set -q FZF_TMUX_HEIGHT
set height $FZF_TMUX_HEIGHT
else
set height 40%
end
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if echo $height | \grep -q -E '%$'
echo "-p "(echo $height | sed 's/%$//')
else
echo "-l $height"
end
set -e height
end
bind \ct '__fzf_ctrl_t'
bind \cr '__fzf_ctrl_r'
bind \ec '__fzf_alt_c'
end
EOFZF
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echo "OK"
fi
fi
append_line() {
echo "Update $2:"
echo " - $1"
[ -f "$2" ] || touch "$2"
if [ $# -lt 3 ]; then
line=$(\grep -nF "$1" "$2" | sed 's/:.*//' | tr '\n' ' ')
else
line=$(\grep -nF "$3" "$2" | sed 's/:.*//' | tr '\n' ' ')
fi
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if [ -n "$line" ]; then
echo " - Already exists: line #$line"
else
echo "$1" >> "$2"
echo " + Added"
fi
echo
}
echo
for shell in bash zsh; do
append_line "[ -f ~/.fzf.${shell} ] && source ~/.fzf.${shell}" ~/.${shell}rc "~/.fzf.${shell}"
done
if [ $key_bindings -eq 0 -a $has_fish -eq 1 ]; then
bind_file=~/.config/fish/functions/fish_user_key_bindings.fish
append_line "fzf_key_bindings" "$bind_file"
echo ' * Due to a known bug of fish, you may have issues running fzf on fish.'
echo ' * If that happens, try the following:'
echo ' - Remove ~/.config/fish/functions/fzf.fish'
echo ' - Place fzf executable in a directory included in $PATH'
echo
fi
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cat << EOF
Finished. Restart your shell or reload config file.
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source ~/.bashrc # bash
source ~/.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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