# -*- shell-script -*-
#
#   Copyright (C) 2002-2004, 2006, 2008-2009, 2012, 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.

setvar _Dbg_ansi_term_bold = """"
setvar _Dbg_ansi_term_italic = """"
setvar _Dbg_ansi_term_underline = """"
setvar _Dbg_ansi_term_normal = """"

# Called when a dangerous action is about to be done to make sure it's
# okay. `prompt' is printed, and "yes", or "no" is solicited.  The
# user response is returned in variable $_Dbg_response and $? is set
# to 0.  _Dbg_response is set to 'error' and $? set to 1 on an error.
#
proc _Dbg_confirm {
    if (( $# < 1 || $# > 2 ))  {
        setvar _Dbg_response = ''error''
        return 0
    }
    setvar _Dbg_confirm_prompt = "$1"
    typeset _Dbg_confirm_default=${2:-'no'}
    while : {
        if ! read $_Dbg_edit -p $_Dbg_confirm_prompt _Dbg_response args \
            <&$_Dbg_input_desc 2>>$_Dbg_prompt_output  {
            break
        }

        case (_Dbg_response) {
            'y' | 'yes' | 'yeah' | 'ya' | 'ja' | 'si' | 'oui' | 'ok' | 'okay'  {
                setvar _Dbg_response = ''y''
                return 0
                }
            'n' | 'no' | 'nope' | 'nyet' | 'nein' | 'non'  {
                setvar _Dbg_response = ''n''
                return 0
                }
            * {
                if [[ $_Dbg_response =~ '^[ \t]*$' ]]  {
                    set +x
                    return 0
                } else {
                    _Dbg_msg "I don't understand \"$_Dbg_response\"."
                    _Dbg_msg "Please try again entering 'yes' or 'no'."
                    setvar _Dbg_response = ''''
                }
                }
        }

    }
}

# Print an error message
proc _Dbg_errmsg {
    typeset -r prefix='**'
    if [[ -n $_Dbg_set_highlight ]]  {
        _Dbg_msg "$prefix ${_Dbg_ansi_term_underline}$[join(ARGV)]${_Dbg_ansi_term_normal}"
    } else {
        _Dbg_msg "$prefix $[join(ARGV)]"
    }
}

# Print an error message without the ending carriage return
proc _Dbg_errmsg_no_cr {
    typeset -r prefix='**'
    _Dbg_msg_no_cr "$prefix $[join(ARGV)]"
}

# print message to output device
proc _Dbg_msg {
    if (( _Dbg_logging ))  {
        builtin echo -e @ARGV >>$_Dbg_logfid
    }
    if (( ! _Dbg_logging_redirect ))  {
        if [[ -n $_Dbg_tty  ]] && [[ $_Dbg_tty != '&1' ]]  {
            builtin echo -e @ARGV >>$_Dbg_tty
        } else {
            builtin echo -e @ARGV
        }
    }
}

# print message to output device without a carriage return at the end
proc _Dbg_msg_nocr {
    if (( _Dbg_logging ))  {
        builtin echo -n -e @ARGV >>$_Dbg_logfid
    }
    if (( ! _Dbg_logging_redirect ))  {
        if [[ -n $_Dbg_tty  ]]  {
            builtin echo -n -e @ARGV >>$_Dbg_tty
        } else {
            builtin echo -n -e @ARGV
        }
    }
}

# print message to output device
proc _Dbg_printf {
    _Dbg_printf_nocr @ARGV
    _Dbg_msg ''
}

# print message to output device without a carriage return at the end
proc _Dbg_printf_nocr {
    typeset format=$1
    shift
    if (( _Dbg_logging ))  {
        builtin printf $format @ARGV >>$_Dbg_logfid
    }
    if (( ! _Dbg_logging_redirect ))  {
        if [[ -n $_Dbg_tty ]]  {
            builtin printf $format @ARGV >>$_Dbg_tty
        } else {
            builtin printf $format @ARGV
        }
    }
}

typeset _Dbg_dashes='---------------------------------------------------'

# print message to output device
proc _Dbg_section {
    if [[ -n $_Dbg_set_highlight ]]  {
        _Dbg_msg "${_Dbg_ansi_term_bold}$[join(ARGV)]${_Dbg_ansi_term_normal}"
    } else {
	local -r msg="$[join(ARGV)]"
        _Dbg_msg "$msg\n${_Dbg_dashes:0:${#msg}}"
    }
}

proc _Dbg_msg_rst {
    local -r msg="$[join(ARGV)]"
    if [[ -n $_Dbg_set_highlight ]] && (( _Dbg_working_term_highlight ))  {
	typeset opts="--rst --width=$_Dbg_set_linewidth"
	typeset highlight_cmd="${_Dbg_libdir}/lib/term-highlight.py"
	typeset formatted_msg
	setvar formatted_msg = $(echo "$msg" | $highlight_cmd $opts)
	if (( $? == 0 )) && [[ -n $formatted_msg ]]  {
	    _Dbg_msg $formatted_msg
	    return
	}
    }
    _Dbg_msg $msg
}

# Common funnel for "Undefined command" message
proc _Dbg_undefined_cmd {
    if (( $# == 2 ))  {
        _Dbg_errmsg "Undefined $1 subcommand \"$2\". Try \"help $1\"."
    } else {
        _Dbg_errmsg "Undefined command \"$1\". Try \"help\"."
    }
}