# -*- shell-script -*-
# "set width" debugger command
#
#   Copyright (C) 2010-2011, 2016 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.

# If run standalone, pull in other files we need
if [[ $0 == ${BASH_SOURCE[0]} ]]  {
    global dirname := $(BASH_SOURCE[0]%/*)
    [[ $dirname == $0 ]] && global top_dir := ''../..'' || global top_dir := "$(dirname)/../.."
    [[ -z $_Dbg_libdir ]] && global _Dbg_libdir := $top_dir
    for file in [help alias]  { source $top_dir/lib/$(file).sh; }
}

_Dbg_help_add_sub set width \
'**set** **width** *width*

Set maximum width of lines to *width*.
' 1

typeset -i _Dbg_set_linewidth; global _Dbg_set_linewidth := $(COLUMNS:-80)

proc _Dbg_do_set_width {
    if [[ $1 == $int_pat ]]  {
	_Dbg_write_journal_eval "_Dbg_set_linewidth=$1"
    } else {
	_Dbg_errmsg "Integer argument expected; got: $1"
	return 1
    }
    return 0
}
(CommandList
  children: [
    (If
      arms: [
        (if_arm
          cond: [
            (Sentence
              child: 
                (DBracket
                  expr: 
                    (BoolBinary
                      op_id: BoolBinary_GlobDEqual
                      left: {($ VSub_Number "$0")}
                      right: 
                        {
                          (BracedVarSub
                            token: <VSub_Name BASH_SOURCE>
                            bracket_op: (ArrayIndex expr:(ArithWord w:{(Lit_Digits 0)}))
                            spids: [69 74]
                          )
                        }
                    )
                )
              terminator: <Op_Semi ";">
            )
          ]
          action: [
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:dirname)
                  op: Equal
                  rhs: 
                    {
                      (BracedVarSub
                        token: <VSub_Name BASH_SOURCE>
                        bracket_op: (ArrayIndex expr:(ArithWord w:{(Lit_Digits 0)}))
                        suffix_op: (StringUnary op_id:VOp1_Percent arg_word:{(Lit_Slash /) ("*")})
                        spids: [84 92]
                      )
                    }
                  spids: [83]
                )
              ]
              spids: [83]
            )
            (AndOr
              children: [
                (DBracket
                  expr: 
                    (BoolBinary
                      op_id: BoolBinary_GlobDEqual
                      left: {($ VSub_Name "$dirname")}
                      right: {($ VSub_Number "$0")}
                    )
                )
                (AndOr
                  children: [
                    (Assignment
                      keyword: Assign_None
                      pairs: [
                        (assign_pair
                          lhs: (LhsName name:top_dir)
                          op: Equal
                          rhs: {(SQ <../..>)}
                          spids: [107]
                        )
                      ]
                      spids: [107]
                    )
                    (Assignment
                      keyword: Assign_None
                      pairs: [
                        (assign_pair
                          lhs: (LhsName name:top_dir)
                          op: Equal
                          rhs: {(${ VSub_Name dirname) (/../..)}
                          spids: [114]
                        )
                      ]
                      spids: [114]
                    )
                  ]
                  op_id: Op_DPipe
                )
              ]
              op_id: Op_DAmp
            )
            (AndOr
              children: [
                (DBracket
                  expr: (BoolUnary op_id:BoolUnary_z child:{($ VSub_Name "$_Dbg_libdir")})
                )
                (Assignment
                  keyword: Assign_None
                  pairs: [
                    (assign_pair
                      lhs: (LhsName name:_Dbg_libdir)
                      op: Equal
                      rhs: {($ VSub_Name "$top_dir")}
                      spids: [131]
                    )
                  ]
                  spids: [131]
                )
              ]
              op_id: Op_DAmp
            )
            (ForEach
              iter_name: file
              iter_words: [{(help)} {(alias)}]
              do_arg_iter: False
              body: 
                (DoGroup
                  children: [
                    (Sentence
                      child: 
                        (C {(source)} {($ VSub_Name "$top_dir") (/lib/) (${ VSub_Name file) (.sh)})
                      terminator: <Op_Semi ";">
                    )
                  ]
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                )
              spids: [140 145]
            )
          ]
          spids: [-1 80]
        )
      ]
      spids: [-1 161]
    )
    (C {(_Dbg_help_add_sub)} {(set)} {(width)} 
      {(SQ <"**set** **width** *width*\n"> <"\n"> <"Set maximum width of lines to *width*.\n">)} {(1)}
    )
    (Sentence child:(C {(typeset)} {(-i)} {(_Dbg_set_linewidth)}) terminator:<Op_Semi ";">)
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:_Dbg_set_linewidth)
          op: Equal
          rhs: 
            {
              (BracedVarSub
                token: <VSub_Name COLUMNS>
                suffix_op: (StringUnary op_id:VTest_ColonHyphen arg_word:{(80)})
                spids: [188 192]
              )
            }
          spids: [187]
        )
      ]
      spids: [187]
    )
    (FuncDef
      name: _Dbg_do_set_width
      body: 
        (BraceGroup
          children: [
            (If
              arms: [
                (if_arm
                  cond: [
                    (Sentence
                      child: 
                        (DBracket
                          expr: 
                            (BoolBinary
                              op_id: BoolBinary_GlobDEqual
                              left: {($ VSub_Number "$1")}
                              right: {($ VSub_Name "$int_pat")}
                            )
                        )
                      terminator: <Op_Semi ";">
                    )
                  ]
                  action: [
                    (C {(_Dbg_write_journal_eval)} {(DQ ("_Dbg_set_linewidth=") ($ VSub_Number "$1"))})
                  ]
                  spids: [-1 216]
                )
              ]
              else_action: [
                (C {(_Dbg_errmsg)} {(DQ ("Integer argument expected; got: ") ($ VSub_Number "$1"))})
                (ControlFlow token:<ControlFlow_Return return> arg_word:{(1)})
              ]
              spids: [227 243]
            )
            (ControlFlow token:<ControlFlow_Return return> arg_word:{(0)})
          ]
          spids: [199]
        )
      spids: [195 198]
    )
  ]
)