fzf/install

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#!/bin/bash
cd `dirname $BASH_SOURCE`
fzf_base=`pwd`
# ruby executable
echo -n "Checking Ruby executable ... "
ruby=`which ruby`
if [ $? -ne 0 ]; then
echo "ruby executable not found!"
exit 1
fi
echo "OK"
# Curses-support
echo -n "Checking Curses support ... "
/usr/bin/env ruby -e "begin; require 'curses'; rescue Exception; exit 1; end"
if [ $? -eq 0 ]; then
echo "OK"
else
echo "Not found"
echo "Installing 'curses' gem ... "
/usr/bin/env gem install curses
if [ $? -ne 0 ]; then
echo "Failed to install 'curses' gem."
echo "Try installing it as root: sudo gem install curses"
exit 1
fi
fi
# Ruby version
echo -n "Checking Ruby version ... "
/usr/bin/env ruby -e 'exit RUBY_VERSION >= "1.9"'
if [ $? -eq 0 ]; then
echo ">= 1.9"
/usr/bin/env ruby --disable-gems -e "begin; require 'curses'; rescue Exception; exit 1; end"
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
# Auto-completion
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read -p "Do you want to add auto-completion support? ([y]/n) " -n 1 -r
echo
[[ ! $REPLY =~ ^[Nn]$ ]]
auto_completion=$?
# Key-bindings
read -p "Do you want to add key bindings? ([y]/n) " -n 1 -r
echo
[[ ! $REPLY =~ ^[Nn]$ ]]
key_bindings=$?
echo
for shell in bash zsh; do
echo -n "Generate ~/.fzf.$shell ... "
src=~/.fzf.${shell}
fzf_completion="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
fzf() {
$fzf_cmd "\$@"
}
export -f fzf > /dev/null
# Auto-completion
# ---------------
$fzf_completion
EOF
if [ $key_bindings -eq 0 ]; then
if [ $shell = bash ]; then
cat >> $src << "EOF"
# Key bindings
# ------------
# Required to refresh the prompt after fzf
bind '"\er": redraw-current-line'
# CTRL-T - Paste the selected file path into the command line
fsel() {
find * -path '*/\.*' -prune \
-o -type f -print \
-o -type l -print 2> /dev/null | fzf -m | while read item; do
printf '%q ' "$item"
done
echo
}
bind '"\C-t": " \C-u \C-a\C-k$(fsel)\e\C-e\C-y\C-a\C-y\ey\C-h\C-e\er"'
# CTRL-R - Paste the selected command from history into the command line
bind '"\C-r": " \C-e\C-u$(history | fzf +s | sed \"s/ *[0-9]* *//\")\e\C-e\er"'
EOF
else
cat >> $src << "EOF"
# Key bindings
# ------------
# CTRL-T - Paste the selected file path(s) into the command line
fzf-file-widget() {
local FILES
local IFS="
"
FILES=($(
find * -path '*/\.*' -prune \
-o -type f -print \
-o -type l -print 2> /dev/null | fzf -m))
unset IFS
FILES=$FILES:q
LBUFFER="${LBUFFER%% #} $FILES"
zle redisplay
}
zle -N fzf-file-widget
bindkey '^T' fzf-file-widget
# ALT-C - cd into the selected directory
fzf-cd-widget() {
cd "${$(find * -path '*/\.*' -prune \
-o -type d -print 2> /dev/null | fzf):-.}"
zle reset-prompt
}
zle -N fzf-cd-widget
bindkey '\ec' fzf-cd-widget
# CTRL-R - Paste the selected command from history into the command line
fzf-history-widget() {
LBUFFER=$(history | fzf +s | sed "s/ *[0-9]* *//")
zle redisplay
}
zle -N fzf-history-widget
bindkey '^R' fzf-history-widget
EOF
fi
fi
echo "OK"
done
echo
for shell in bash zsh; do
rc=~/.${shell}rc
src="source ~/.fzf.${shell}"
echo "Update $rc:"
echo " - $src"
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if [ $(grep -F "$src" $rc | wc -l) -gt 0 ]; then
echo " - Not added (already being sourced)"
else
echo $src >> $rc
echo " - Added"
fi
echo
done
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cat << EOF
Finished. Reload your .bashrc or .zshrc.
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source ~/.bashrc # bash"
source ~/.zshrc # zsh"
To uninstall fzf, simply remove the added line.
EOF
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