# -*- shell-script -*-
# hist.sh - Bourne Again Shell Debugger history routines
#
# Copyright (C) 2002-2003, 2006-2008, 2011, 2015 Rocky Bernstein
# <rocky@gnu.org>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with This program; see the file COPYING. If not, write to
# the Free Software Foundation, 59 Temple Place, Suite 330, Boston,
# MA 02111 USA.
typeset -i _Dbg_hi_last_stop=0
typeset -i _Dbg_hi=0 # Current next history entry to store into.
typeset -a _Dbg_history; _Dbg_history=()
typeset -i _Dbg_set_history=1
typeset -i _Dbg_history_length=${HISTSIZE:-256} # gdb's default value
typeset _Dbg_histfile=${HOME:-.}/.bashdb_hist
# Set to rerun history item, or print history if command is of the form
# !n:p. If command is "history" then $1 is number of history item.
# the history command index to run is returned or $_Dbg_hi if
# there's nothing to run.
# Return value in $history_num
_Dbg_history_parse() {
history_num=$1
((history_num < 0)) && ((history_num=${#_Dbg_history[@]}-1+$1))
_Dbg_hi=${#_Dbg_history[@]}
[[ -z $history_num ]] && let history_num=$_Dbg_hi-1
if [[ $_Dbg_cmd == h* ]] ; then
if [[ $history_num != $int_pat ]] ; then
if [[ $history_num == -$int_pat ]] ; then
history_num=$_Dbg_hi+$history_num
else
_Dbg_errmsg "Invalid history number skipped: $history_num"
history_num=-1
fi
fi
else
# Handle ! form. May need to parse number out number and modifier
# case $_Dbg_cmd in
# \!\-${int_pat}:p )
# typeset -a word1
# word1=($(_Dbg_split '!' $_Dbg_cmd))
# local -a word2
# word2=($(_Dbg_split ':' ${word1[0]}))
# typeset -i num=_Dbg_hi+${word2[0]}
# _Dbg_do_history_list $num $num
# history_num=-1
# ;;
# [!]${int_pat}:p )
# local -a word1
# word1=($(_Dbg_split '!' $_Dbg_cmd))
# local -a word2
# word2=($(_Dbg_split ':' ${word1[0]}))
# _Dbg_do_history_list ${word2[0]} ${word2[0]}
# history_num=-1
# ;;
# \!\-$int_pat )
# local -a word
# word=($(_Dbg_split '!' $_Dbg_cmd))
# history_num=$_Dbg_hi+${word[0]}
# ;;
# \!$int_pat )
# local -a word
# word=($(_Dbg_split '!' $_Dbg_cmd))
# history_num=${word[0]}
# ;;
# '!' )
# if [[ $history_num != $int_pat ]] ; then
# if [[ $history_num == -$int_pat ]] ; then
# history_num=$_Dbg_hi+$history_num
# else
# _Dbg_msg "Invalid history number skipped: $history_num"
# history_num=-1
# fi
# fi
# ;;
# * )
# _Dbg_errmsg "Invalid history number skipped: $_Dbg_cmd"
# history_num=-1
# esac
:
fi
}
_Dbg_history_read() {
if [[ -r $_Dbg_histfile ]] ; then
history -r $_Dbg_histfile
typeset -a last_history; last_history=($(history 1))
typeset -i max_history=${last_history[0]}
if (( max_history > _Dbg_history_length )) ; then
max_history=$_Dbg_history_length
fi
local OLD_HISTTIMEFORMAT=${HISTTIMEFORMAT}
local hist
HISTTIMEFORMAT=''
local -i i
for (( i=1; (( i <= max_history )) ; i++ )) ; do
last_history=($(history $i))
hist=${last_history}[1]
# _Dbg_history[$i]=$hist
done
HISTTIMEFORMAT=${OLD_HISTTIMEFORMAT}
fi
}
# Save history file
_Dbg_history_write() {
(( _Dbg_history_length > 0 && _Dbg_set_history)) \
&& history -w $_Dbg_histfile
}
# Remove the last command from the history list.
_Dbg_history_remove_item() {
_Dbg_hi=${#_Dbg_history[@]}-1
unset _Dbg_history[$_Dbg_hi]
}
# _Dbg_history_read
