dotfiles/.bash_fzf

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2022-12-17 00:37:53 -05:00
##
## bash-fzf.rc -- Improve GNU Bash with FZF Matching
## Copyright (c) 1997-2020 Dr. Ralf S. Engelschall <http://engelschall.com>
##
## Permission is hereby granted, free of charge, to any person obtaining
## a copy of this software and associated documentation files (the
## "Software"), to deal in the Software without restriction, including
## without limitation the rights to use, copy, modify, merge, publish,
## distribute, sublicense, and/or sell copies of the Software, and to
## permit persons to whom the Software is furnished to do so, subject to
## the following conditions:
##
## The above copyright notice and this permission notice shall be included
## in all copies or substantial portions of the Software.
##
## THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
## EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
## MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
## IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
## CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
## TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
## SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
##
# we enhance bash(1) with fzf(1) only for interactive sessions...
if [[ $- =~ .*i.* ]]; then
#
# ==== COMMON ====
#
# identification
__fzf_version="2.1.3"
# common fzf(1) processing prolog
__fzf_prolog () {
echo -n -e "\e[1A"
}
# determine color support
__fzf_fzf_options="--color=bw"
__fzf_term_colors=$(tput colors 2>/dev/null)
if [[ -n $__fzf_term_colors && $__fzf_term_colors -ge 8 ]]; then
__fzf_fzf_options="--color=light,bg:-1,fg:-1,hl:1,bg+:0,fg+:15,hl+:1,gutter:-1,pointer:1,info:4,prompt:-1"
fi
# common fzf(1) execution
__fzf_fzf () {
fzf --exact \
--no-sort \
--no-mouse \
--reverse \
--height=6 \
--no-bold \
--inline-info \
--bind="ctrl-k:kill-line" \
--bind="backward-eof:abort" \
--expect=ctrl-e \
$__fzf_fzf_options \
"$@"
}
# common fzf(1) processing epilog
__fzf_epilog () {
key=$(echo "$1" | LC_ALL=C sed -e 1q)
cmd=$(echo "$1" | LC_ALL=C sed -e 1d)
if [[ $key == "" && $cmd == "" ]]; then
echo -n -e "\e[1A"
history -s
history -a
elif [[ $key == ctrl-e ]]; then
read -e -p "\$ " -i "$cmd" cmd
history -s -- $cmd
history -a
eval "$cmd"
else
history -s -- $cmd
history -a
echo "\$ $cmd"
eval "$cmd"
fi
}
# common finding of config files in current, parent and home directories
__fzf_config_files () {
local filename="$1"
local files=""
local dir=$(pwd)
local homedir=$(cd $HOME && pwd)
local homeseen="no"
while [[ $dir != "/" ]]; do
if [[ -f "$dir/$filename" ]]; then
if [[ $files == "" ]]; then
files="$dir/$filename"
else
files="$files $dir/$filename"
fi
if [[ $dir == $homedir ]]; then
homeseen="yes"
fi
fi
dir=$(cd $dir/.. && pwd)
done
if [[ $homeseen == "no" && -f "$HOME/$filename" ]]; then
if [[ $files == "" ]]; then
files="$HOME/$filename"
else
files="$files $HOME/$filename"
fi
fi
echo "$files"
}
#
# ==== COMMAND HISTORY ====
#
# configure Bash history processing
shopt -s cmdhist
shopt -s histappend
shopt -s lithist
HISTSIZE=${HISTSIZE-1000}
HISTFILESIZE=${HISTFILESIZE-1000}
HISTIGNORE=${HISTIGNORE-"&:[ ]*:exit:ls:bg:fg:history:clear"}
HISTTIMEFORMAT=${HISTTIMEFORMAT-"%Y-%m-%d %H:%M:%S "}
HISTCONTROL=${HISTCONTROL-"erasedups:ignoredups:ignorespace"}
# the improved history functionality
__fzf_history () {
__fzf_prolog
history -a
local cmd=$(history | LC_ALL=C sort -rn | LC_ALL=C sed -e 1d | LC_ALL=C cut -c29- | __fzf_fzf --prompt="\$ ")
__fzf_epilog "$cmd"
}
# override Bash history search (CTRL+r) with improved history functionality
bind '"\C-r": "\C-a\C-k __fzf_history\C-j"'
#
# ==== COMMAND BOOKMARKING ====
#
# the dedicated filename
__fzf_bookmark_file=".bash_bookmark"
# the additional bookmarking functionality
__fzf_bookmark () {
__fzf_prolog
local files=$(__fzf_config_files $__fzf_bookmark_file)
if [[ $files != "" ]]; then
cmd=$(cat $files | LC_ALL=C sed -e '/^ *#.*/d' -e '/^ *$/d' | __fzf_fzf --prompt='$ ')
__fzf_epilog "$cmd"
else
echo "-bash: bookmark: ERROR: no file \"$__fzf_bookmark_file\" in current, parent(s) or home directory found"
fi
}
# provide additional Bash bookmarking functionality (CTRL+b)
bind '"\C-b": "\C-a\C-k __fzf_bookmark\C-j"'
# provide convenient command for editing bookmarked commands
bookmark () {
# the files to operate on
local files=$(__fzf_config_files $__fzf_bookmark_file)
local file=""
# command-line argument parsing
local usage="bookmark [-h|--help] [-g|--global] [-l|--local] [-d|--dir <dir>] [-s|--show] [-e|--edit] [-x|--exec] [-a|--add] [-r|--remove] [<cmd>]"
local mode="parent"
local cmd="none"
while [[ $# -gt 0 ]]; do
case "$1" in
-g|--global ) mode="global"; shift ;;
-l|--local ) mode="local"; shift ;;
-d|--dir ) mode="direct"; file="$2/$__fzf_bookmark_file"; shift; shift ;;
-s|--show ) cmd="show"; shift ;;
-e|--edit ) cmd="edit"; shift ;;
-x|--exec ) cmd="exec"; shift ;;
-a|--add ) cmd="add"; shift ;;
-r|--remove ) cmd="remove"; shift ;;
-h|--help ) cmd="help"; shift ;;
* ) break ;;
esac
done
if [[ $cmd == "none" ]]; then
echo "-bash: bookmark: ERROR: invalid number of arguments" 2>&1
echo "-bash: bookmark: USAGE: $usage" 2>&1
return 1
fi
if [[ $cmd == "help" ]]; then
echo "bash: bookmark: USAGE: $usage"
return 0
fi
# determine particular bookmark file
if [[ $mode == "global" ]]; then
file="$HOME/$__fzf_bookmark_file"
elif [[ $mode == "local" ]]; then
file="$PWD/$__fzf_bookmark_file"
elif [[ $mode == "parent" ]]; then
file=$(echo "$files" | LC_ALL=C sed -e 's; .*;;')
if [[ $file == "" ]]; then
file="$HOME/$__fzf_bookmark_file"
fi
fi
# perform the commands
if [[ $cmd == "show" ]]; then
# show bookmarked commands (in all files)
if [[ $files != "" ]]; then
for file in $files; do
LC_ALL=C sed -e '/^ *#.*/d' -e '/^ *$/d' -e "s;^;$file: ;" <$file
done
fi
return 0
elif [[ $cmd == "edit" ]]; then
# edit bookmarked commands (in particular file)
echo "bash: bookmark: editing commands in \"$file\""
${EDITOR-vi} $file
return $?
elif [[ $cmd == "add" ]]; then
# add bookmarked command (to particular file)
if [[ $# -gt 0 ]]; then
entry="$*"
else
entry=$(fc -l -n -1 | LC_ALL=C sed -e 's;^[ ]*;;')
fi
echo "bash: bookmark: adding command to \"$file\": $entry"
echo "$entry" >>$file
return 0
elif [[ $cmd == "remove" ]]; then
# remove bookmarked command (from particular file)
if [[ $# -gt 0 ]]; then
entry="$*"
else
entry=$(fc -l -n -1 | LC_ALL=C sed -e 's;^[ ]*;;')
fi
echo "bash: bookmark: removing command from \"$file\": $entry"
LC_ALL=C sed -e "/^$*/d" <$file >$file.new
if cmp $file $file.new >/dev/null 2>&1; then
rm -f $file.new
echo "-bash: bookmark: ERROR: failed to remove command" 2>&1
return 1
fi
cp $file.new $file
rm -f $file.new
return 0
fi
}
#
# ==== DIRECTORY CHANGING ====
#
# the dedicated filename
__fzf_chdir_file=".bash_cdpaths"
# configure Bash directory processing
shopt -s cdspell
shopt -s dirspell
shopt -s globstar
shopt -u direxpand
PROMPT_DIRTRIM=10
# provide command for scanning directory trees
cdpaths () {
# the files to operate on
local files=$(__fzf_config_files $__fzf_chdir_file)
local file=""
# command-line argument parsing
local usage="cdpaths [-h|--help] [-g|--global] [-l|--local] [-d|--dir <dir>]"
local mode="parent"
local cmd="none"
while [[ $# -gt 0 ]]; do
case "$1" in
-g|--global ) mode="global"; shift ;;
-l|--local ) mode="local"; shift ;;
-d|--dir ) mode="direct"; file="$2/$__fzf_chdir_file"; shift; shift ;;
-h|--help ) cmd="help"; shift ;;
* ) break ;;
esac
done
if [[ $cmd == "help" ]]; then
echo "bash: cdpaths: USAGE: $usage"
return 0
fi
# determine particular cdpaths file
if [[ $mode == "global" ]]; then
file="$HOME/$__fzf_chdir_file"
elif [[ $mode == "local" ]]; then
file="$PWD/$__fzf_chdir_file"
elif [[ $mode == "parent" ]]; then
file=$(echo "$files" | LC_ALL=C sed -e 's; .*;;')
if [[ $file == "" ]]; then
file="$HOME/$__fzf_chdir_file"
fi
fi
# determine paths to ignore
local ignore=${BASH_CDPATHS_IGNORE:-'/\.'}
# find and store directories
rm -f "$file"
local dir=$(dirname "$file")
if [[ $mode == "global" ]]; then
# crawl all global directories
local cdpaths="${BASH_CDPATHS:-$HOME}"
local OIFS="$IFS"; IFS=":"
for cdpath in $cdpaths; do
IFS="$OIFS"
find "$cdpath" -type d -print 2>/dev/null | \
LC_ALL=C egrep -v "$ignore" | \
LC_ALL=C sed -e "s;^$dir/*;;" -e '/^$/d' >>"$file"
done
IFS="$OIFS"
else
# crawl relative directory
find "$dir" -type d -print 2>/dev/null | \
LC_ALL=C egrep -v "$ignore" | \
LC_ALL=C sed -e "s;^$dir/*;;" -e '/^$/d' >"$file"
fi
local n=$(wc -l "$file" | awk '{ print $1; }')
echo "bash: cdpaths: cached $n directory entries in $file"
}
# expand .bash_cdpaths files content
__fzf_chdir_expand () {
local homedir=$(cd $HOME && pwd)
for cdpathfile in "$@"; do
local cdpathdir=$(dirname $cdpathfile)
if [[ $cdpathdir == $homedir ]]; then
cdpathdir="~"
fi
echo "cd $cdpathdir"
cat $cdpathfile | LC_ALL=C sed -e "s;^\\([^/]\\);$cdpathdir/\\1;" -e "s;^;cd ;"
done
}
# the additional change directory functionality
__fzf_chdir () {
__fzf_prolog
local files=$(__fzf_config_files $__fzf_chdir_file)
if [[ $files != "" ]]; then
cmd=$(__fzf_chdir_expand $files | __fzf_fzf --prompt='$ cd ')
__fzf_epilog "$cmd"
else
echo "-bash: chdir: ERROR: no file \"$__fzf_chdir_file\" in current, parent(s) or home directory found"
fi
}
# provide additional Bash change directory functionality (CTRL+g)
bind '"\C-g": "\C-a\C-k __fzf_chdir\C-j"'
# declare reverse DIRSTACK array
declare -a DIRSTACKREV=()
# declare cd(1) hooks
declare -a __fzf_cd_hooks=()
# enhance change directory command
cd () {
local result=0
# change current working directory
if [[ $1 == "-" ]]; then
# go to previous working directory on forward directory stack
# and move this directory onto the reverse directory stack
if [[ ${#DIRSTACK[*]} -gt 1 ]]; then
DIRSTACKREV[${#DIRSTACKREV[*]}]="${DIRSTACK[0]}"
builtin popd >/dev/null
result="$?"
else
echo "-bash: cd: ERROR: no more previous working directories on forward directory stack" 1>&2
result=1
fi
elif [[ $1 == "+" ]]; then
# go to previous working directory on reverse directory stack
# and move this directory onto the forward directory stack
if [[ ${#DIRSTACKREV[*]} -gt 0 ]]; then
local i=$((${#DIRSTACKREV[*]} - 1))
eval "builtin pushd ${DIRSTACKREV[$i]} >/dev/null"
result="$?"
unset DIRSTACKREV[$i]
else
echo "-bash: cd: ERROR: no more previous working directories on reverse directory stack" 1>&2
result=1
fi
else
# support a quick "go to home directory" use case
if [[ $# -eq 0 ]]; then
set -- $HOME
fi
# go to next working directory
# (which implicitly pushed it onto the forward directory stack)
pushd ${1+"$@"} >/dev/null 2>/dev/null
result="$?"
if [[ $result -eq 0 ]]; then
# avoid duplicates on forward directory stack
if [[ "${#DIRSTACK[*]}" -ge 2 && "${DIRSTACK[0]}" == "${DIRSTACK[1]}" ]]; then
builtin popd -n >/dev/null
fi
# erase reverse directory stack
DIRSTACKREV=()
else
echo "-bash: cd: ERROR: $*: No such directory" 1>&2
fi
fi
# allow external hooks to execute after we successfully switched the directory
if [[ $result -eq 0 ]]; then
for hook in "${__fzf_cd_hooks[@]}"; do
eval "${hook}"
done
fi
return $result
}
fi