mksh/dot.mkshrc

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2009-08-27 18:52:12 +02:00
# $Id$
# $MirOS: src/bin/mksh/dot.mkshrc,v 1.49 2009/08/27 16:52:12 tg Exp $
#-
# Copyright (c) 2002, 2003, 2004, 2006, 2007, 2008, 2009
# Thorsten Glaser <tg@mirbsd.org>
#
# Provided that these terms and disclaimer and all copyright notices
# are retained or reproduced in an accompanying document, permission
# is granted to deal in this work without restriction, including un-
# limited rights to use, publicly perform, distribute, sell, modify,
# merge, give away, or sublicence.
#
# This work is provided "AS IS" and WITHOUT WARRANTY of any kind, to
# the utmost extent permitted by applicable law, neither express nor
# implied; without malicious intent or gross negligence. In no event
# may a licensor, author or contributor be held liable for indirect,
# direct, other damage, loss, or other issues arising in any way out
# of dealing in the work, even if advised of the possibility of such
# damage or existence of a defect, except proven that it results out
# of said person's immediate fault when using the work as intended.
#-
# ~/.mkshrc: mksh initialisation file for interactive shells
: ${EDITOR:=/bin/ed} ${TERM:=vt100} ${HOSTNAME:=$(ulimit -c 0;hostname -s 2>&-)}
[[ $HOSTNAME = @(localhost|*([ ])) ]] && HOSTNAME=$(ulimit -c 0;hostname 2>&-)
: ${HOSTNAME:=nil}; if (( USER_ID )); then PS1='$'; else PS1='#'; fi
function precmd {
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typeset e=$?
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(( e )) && print -n "$e|"
}
PS1=' $(precmd)${USER:=$(ulimit -c 0;id -un 2>&-||print \?)}@${HOSTNAME%%.*}:$(
typeset d=${PWD:-?} n p=~; [[ $p = ?(*/) ]] || d=${d/#$p/~}
(( ${#d} > (n = (COLUMNS/3 < 7 ? 7 : COLUMNS/3)) )) && {
d=${d:(-n)}; p=...; } || p=; print -nr -- "$p$d") '"$PS1 "
export EDITOR HOSTNAME LESSHISTFILE=- MKSH=$(whence -p mksh) PS1 TERM USER
alias ls=ls
unalias ls
alias l='ls -F'
alias la='l -a'
alias ll='l -l'
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alias lo='l -alo'
alias which='whence -p'
whence -p rot13 >&- || alias rot13='tr \
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ \
nopqrstuvwxyzabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKLM'
whence -p hd >&- || function hd {
hexdump -e '"%08.8_ax " 8/1 "%02X " " - " 8/1 "%02X "' \
-e '" |" "%_p"' -e '"|\n"' "$@"
}
# Berkeley C shell compatible dirs, popd, and pushd functions
# Z shell compatible chpwd() hook, used to update DIRSTACK[0]
DIRSTACKBASE=$(realpath ~/. 2>&- || print -nr -- "$HOME")
set -A DIRSTACK
function chpwd {
DIRSTACK[0]=$(realpath . 2>&- || print -r -- "$PWD")
[[ $DIRSTACKBASE = ?(*/) ]] || \
DIRSTACK[0]=${DIRSTACK[0]/#$DIRSTACKBASE/~}
:
}
chpwd .
function cd {
builtin cd "$@"
chpwd "$@"
}
function cd_csh {
typeset d t=${1/#~/$DIRSTACKBASE}
if ! d=$(builtin cd "$t" 2>&1); then
print -u2 "${1}: ${d##*$t - }."
return 1
fi
cd "$t"
}
function dirs {
typeset d
typeset -i isnoglob=0 fl=0 fv=0 fn=0 cpos=0
[[ $(set +o) == *@(-o noglob)@(| *) ]] && isnoglob=1
set -o noglob
while getopts ":lvn" d; do
case $d {
(l) fl=1 ;;
(v) fv=1 ;;
(n) fn=1 ;;
(*) print -u2 'Usage: dirs [-lvn].'
return 1 ;;
}
done
shift $((OPTIND - 1))
if (( $# > 0 )); then
print -u2 'Usage: dirs [-lvn].'
return 1
fi
if (( fv )); then
fv=0
while (( fv < ${#DIRSTACK[*]} )); do
d=${DIRSTACK[fv]}
(( fl )) && d=${d/#~/$DIRSTACKBASE}
print -r -- "$fv $d"
let fv++
done
else
fv=0
while (( fv < ${#DIRSTACK[*]} )); do
d=${DIRSTACK[fv]}
(( fl )) && d=${d/#~/$DIRSTACKBASE}
if (( fn && (cpos+=${#d}+1) >= 79 && ${#d} < 80 )); then
print
(( cpos = ${#d} + 1 ))
fi
print -nr -- "$d "
let fv++
done
print
fi
(( isnoglob )) || set +o noglob
return 0
}
function popd {
typeset d fa
typeset -i isnoglob=0 n=1
[[ $(set +o) == *@(-o noglob)@(| *) ]] && isnoglob=1
set -o noglob
while getopts ":0123456789lvn" d; do
case $d {
(l|v|n) fa="$fa -$d" ;;
(+*) n=2
break ;;
(*) print -u2 'Usage: popd [-lvn] [+<n>].'
return 1 ;;
}
done
shift $((OPTIND - n))
n=0
if (( $# > 1 )); then
print -u2 popd: Too many arguments.
return 1
elif [[ $1 = ++([0-9]) && $1 != +0 ]]; then
if (( (n = ${1#+}) >= ${#DIRSTACK[*]} )); then
print -u2 popd: Directory stack not that deep.
return 1
fi
elif [[ -n $1 ]]; then
print -u2 popd: Bad directory.
return 1
fi
if (( ${#DIRSTACK[*]} < 2 )); then
print -u2 popd: Directory stack empty.
return 1
fi
unset DIRSTACK[n]
set -A DIRSTACK -- "${DIRSTACK[@]}"
cd_csh "${DIRSTACK[0]}" || return 1
(( isnoglob )) || set +o noglob
dirs $fa
}
function pushd {
typeset d fa
typeset -i isnoglob=0 n=1
[[ $(set +o) == *@(-o noglob)@(| *) ]] && isnoglob=1
set -o noglob
while getopts ":0123456789lvn" d; do
case $d {
(l|v|n) fa="$fa -$d" ;;
(+*) n=2
break ;;
(*) print -u2 'Usage: pushd [-lvn] [<dir>|+<n>].'
return 1 ;;
}
done
shift $((OPTIND - n))
if (( $# == 0 )); then
if (( ${#DIRSTACK[*]} < 2 )); then
print -u2 pushd: No other directory.
return 1
fi
d=${DIRSTACK[1]}
DIRSTACK[1]=${DIRSTACK[0]}
cd_csh "$d" || return 1
elif (( $# > 1 )); then
print -u2 pushd: Too many arguments.
return 1
elif [[ $1 = ++([0-9]) && $1 != +0 ]]; then
if (( (n = ${1#+}) >= ${#DIRSTACK[*]} )); then
print -u2 pushd: Directory stack not that deep.
return 1
fi
while (( n-- )); do
d=${DIRSTACK[0]}
unset DIRSTACK[0]
set -A DIRSTACK -- "${DIRSTACK[@]}" "$d"
done
cd_csh "${DIRSTACK[0]}" || return 1
else
set -A DIRSTACK -- placeholder "${DIRSTACK[@]}"
cd_csh "$1" || return 1
fi
(( isnoglob )) || set +o noglob
dirs $fa
}
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# base64 encoder (not NUL safe) and decoder (NUL safe), RFC compliant
function Lb64decode {
typeset u=$-
set +U
typeset c s="$*" t=
[[ -n $s ]] || { s=$(cat;print x); s=${s%x}; }
typeset -i i=0 n=${#s} p=0 v x
typeset -i16 o
while (( i < n )); do
c=${s:(i++):1}
case $c {
(=) break ;;
([A-Z]) (( v = 1#$c - 65 )) ;;
([a-z]) (( v = 1#$c - 71 )) ;;
([0-9]) (( v = 1#$c + 4 )) ;;
(+) v=62 ;;
(/) v=63 ;;
(*) continue ;;
}
(( x = (x << 6) | v ))
case $((p++)) {
(0) continue ;;
(1) (( o = (x >> 4) & 255 )) ;;
(2) (( o = (x >> 2) & 255 )) ;;
(3) (( o = x & 255 ))
p=0
;;
}
t=$t\\x${o#16#}
done
print -n $t
[[ $u = *U* ]] && set -U
:
}
set -A Lb64encode_code -- A B C D E F G H I J K L M N O P Q R S T U V W X Y Z \
a b c d e f g h i j k l m n o p q r s t u v w x y z 0 1 2 3 4 5 6 7 8 9 + /
function Lb64encode {
typeset u=$-
set +U
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typeset c s="$*" t
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[[ -n $s ]] || { s=$(cat;print x); s=${s%x}; }
typeset -i i=0 n=${#s} j v
while (( i < n )); do
c=${s:(i++):1}
(( v = 1#$c << 16 ))
c=${s:(i++):1}
(( j = ${#c} ? 1#$c : 0 ))
(( v |= j << 8 ))
c=${s:(i++):1}
(( j = ${#c} ? 1#$c : 0 ))
(( v |= j ))
t=$t${Lb64encode_code[v >> 18]}${Lb64encode_code[v >> 12 & 63]}
c=${Lb64encode_code[v >> 6 & 63]}
if (( i <= n )); then
t=$t$c${Lb64encode_code[v & 63]}
elif (( i == n + 1 )); then
t=$t$c=
else
t=$t==
fi
if (( ${#t} == 76 || i >= n )); then
print $t
t=
fi
done
[[ $u = *U* ]] && set -U
:
}
# DJB cdb hash (not via stdio, for speed)
typeset -Z11 -Uui16 Lcdbhash_result
function Lcdbhash_add {
typeset u=$-
set +U
typeset s="$*"
[[ -n $s ]] || { s=$(cat;print x); s=${s%x}; }
typeset -i i=0 n=${#s}
while (( i < n )); do
((# Lcdbhash_result = (Lcdbhash_result * 33) ^ 1#${s:(i++):1} ))
done
[[ $u = *U* ]] && set -U
:
}
function Lcdbhash {
Lcdbhash_result=5381
Lcdbhash_add "$@"
print ${Lcdbhash_result#16#}
}
# Jenkins one-at-a-time hash (not via stdio, for speed)
typeset -Z11 -Uui16 Loaathash_result
function Loaathash_add {
typeset u=$-
set +U
typeset s="$*"
[[ -n $s ]] || { s=$(cat;print x); s=${s%x}; }
typeset -i i=0 n=${#s}
while (( i < n )); do
((# Loaathash_result = (Loaathash_result + 1#${s:(i++):1}) *
1025 ))
((# Loaathash_result ^= Loaathash_result >> 6 ))
done
[[ $u = *U* ]] && set -U
:
}
function Loaathash {
Loaathash_result=0 # hmm...
Loaathash_add "$@"
((# Loaathash_result += Loaathash_result << 3 ))
((# Loaathash_result = (Loaathash_result ^
(Loaathash_result >> 11)) * 32769 ))
print ${Loaathash_result#16#}
}
# strip comments (and leading/trailing whitespace if IFS is set) from
# any file(s) given as argument, or stdin if none, and spew to stdout
function Lstripcom {
cat "$@" | { set -o noglob; while read _line; do
_line=${_line%%#*}
[[ -n $_line ]] && print -r -- $_line
done; }
}
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