CmdParse

时间：2021-03-30 04:43:27
Procedure    URPOSE

Uses Dos,Crt;

Const

  VersionNum = 'V1.0 BETA';

  ProgNameStr = 'NEWPROJ.EXE';

  ProgNameShortStr = 'NP.EXE';

  copyRightStr = ProgNameStr+' ' + VersionNum +

                ', Copyright 1992 - 1993, Ken Fox. All Rights Reserved.';

  DefaultFileName = 'NEWPROJ.DAT';

Const

SwitchLength = ;   {   maxlegth of a switch to be tested for}

ArgLength = ;     {   max length of an argument from the commandline}

DelimLength = ;     {   maxlength of delimiter if used}

SwitchNum = ;      {   the number of switches and hence the size of the Array}

                    {      of switches  without arguments                  }

ArgdSwitchNum = ;  {   the number of switches and hence the size of the Array}

                    {      of switches  With arguments                 }

DelimNum = ;       {   number of args With delimited Strings          }

Type

SwitchType = String[Switchlength];

ArgType = String[ArgLength];

DelimType = String[DelimLength];

SwitchesType = Record

         Switch : Array[..SwitchNum] of SwitchType;

         Present : Array[..switchNum] of Boolean

         end;

SwitchWithArgType = Record

              Switch  : Array[..ArgdSwitchNum] Of SwitchType;

              Arg     : Array[..ArgdSwitchNum] Of ArgType;

              Present : Array[..ArgdSwitchNum] of Boolean

              end;

SwitchedArgWithEmbeddedSpacesType = Record

              Switch     : Array[..DelimNum] Of SwitchType;

              StartDelim : Array[..DelimNum] of DelimType;

              Arg        : Array[..DelimNum] Of ArgType;

              endDelim   : Array[..DelimNum] of DelimType;

              Present    : Array[..DelimNum] of Boolean

              end;

CommandLineArrayType = Record

           Switches : SwitchesType;

           ArgDSw   : SwitchWithArgType;

           {    DelimSw  : SwitchedArgWithEmbeddedSpacesType; }

           NoParams : Boolean           {True if nothing on commandline}

           end;

Var

NoCase,

ConvertArgsToUpper

                  : Boolean;

CmdArray                : CommandLineArrayType;

Procedure   initCmdArray(Var CmdArray : CommandLineArrayType);

begin

   {DEFAULT VALUES SET}

   NoCase := True;

   ConvertArgsToUpper := True;

with CmdArray do

   begin

   Switches.Switch[] := '/?' ;     {default help String}

   Switches.Switch[] := '/h' ;     {default help String}

   Switches.Switch[] := '/H' ;     {default help String}

   Switches.Switch[] := 'HELP' ;   {default help String}

   Switches.Switch[] := 'help' ;   {default help String}

   Switches.Switch[] := 'INFO'     {show author contact Info}

{   Switches.Switch[6] := '  ' ;}   {NOT USED}

{   Switches.Switch[7] := '  ' ;}   {NOT USED}

{   Switches.Switch[8] := '  ' ;}   {NOT USED}

{   Switches.Switch[9] := '  ' ;}   {NOT USED}

{   Switches.Switch[10] := '  ' ;}  {NOT USED}

{   Switches.Switch[11] := '  ' ;}  {NOT USED}

{   Switches.Switch[12] := '  ' ;}  {NOT USED}

{  ArgDSw.Switch[1] := '' ;}       {not used}

{  ArgDSw.Switch[2] := '' ;}       {not used}

{  ArgDSw.Switch[3] := '' ;}       {NOT USED}

{  ArgDSw.Switch[4] := '' ;}       {NOT USED}

{  ArgDSw.Switch[5] := '' ;}       {NOT USED}

{  ArgDSw.Switch[6] := '' ;}       {NOT USED}

{  ArgDSw.Switch[7] := '' ;}       {NOT USED}

{  ArgDSw.Switch[8] := '' ;}       {NOT USED}

{  ArgDSw.Switch[9] := '' ;}       {NOT USED}

{  ArgDSw.Switch[10] := '' ;}      {NOT USED}

{  ArgDSw.Switch[11] := '' ;}      {NOT USED}

{  ArgDSw.Switch[12] := '' ;}      {NOT USED}

{  ArgDSw.Switch[13] := '' ;}      {NOT USED}

(*

With DelimSw Do

{     Switch[1]     := '' ;     }  {NOT USED}

{     StartDelim[1] := '' ;     }  {NOT USED}

{     endDelim[1]   := '' ;     }  {NOT USED}

{     Switch[2] := '' ;         }  {NOT USED}

{     StartDelim[2] := '' ;     }  {NOT USED}

{     endDelim[2]   := '' ;     }  {NOT USED}

{     Switch[3] := '' ;         }  {NOT USED}

{     StartDelim[3] := '' ;     }  {NOT USED}

{     endDelim[3]   := '' ;     }  {NOT USED}

{     Switch[4] := '' ;         }  {NOT USED}

{     StartDelim[4] := '' ;     }  {NOT USED}

{     endDelim[4]   := '' ;     }  {NOT USED}

{     Switch[5] := '' ;         }  {NOT USED}

{     StartDelim[5] := '' ;     }  {NOT USED}

{     endDelim[5]   := '' ;     }  {NOT USED}

{     Switch[6] := '' ;         }  {NOT USED}

{     StartDelim[6] := '' ;     }  {NOT USED}

{     endDelim[6]   := '' ;     }  {NOT USED}

{     Switch[7] := '' ;         }  {NOT USED}

{     StartDelim[7] := '' ;     }  {NOT USED}

{     endDelim[7]   := '' ;     }  {NOT USED}

{     Switch[8] := '' ;         }  {NOT USED}

{     StartDelim[8] := '' ;     }  {NOT USED}

{     endDelim[8]   := '' ;     }  {NOT USED}

{     Switch[9] := '' ;         }  {NOT USED}

{     StartDelim[9] := '' ;     }  {NOT USED}

{     endDelim[9]   := '' ;     }  {NOT USED}

{     Switch[10] := '' ;        }  {NOT USED}

{     StartDelim[10] := '' ;    }  {NOT USED}

{     endDelim[10]   := '' ;    }  {NOT USED}

{     Switch[11] := '' ;        }  {NOT USED}

{     StartDelim[11] := '' ;    }  {NOT USED}

{     endDelim[11]   := '' ;    }  {NOT USED}

( min left), (H)elp, More?

{     Switch[12] := '' ;        }  {NOT USED}

{     StartDelim[12] := '' ;    }  {NOT USED}

{     endDelim[12]   := '' ;    }  {NOT USED}

{     Switch[13] := '' ;        }  {NOT USED}

{     StartDelim[13] := '' ;    }  {NOT USED}

{     endDelim[13]   := '' ;    }  {NOT USED}

{     Switch[14] := '' ;        }  {NOT USED}

{     StartDelim[14] := '' ;    }  {NOT USED}

{     endDelim[14]   := '' ;    }  {NOT USED}

end {with DelimSw }

*)

end; {WITH CmdArray}

end;

Procedure CmdParse(Var CmdArray : CommandLineArrayType;

                             NoCase,

                             ConvertArgsToUpper   : Boolean );

{ Procedure to handle all commandline Parameters With or without regard }

{to Case -- selected by the Boolean Var Nocase -- if True then  everrything}

{is converted to uppercase prior to testing}

{all arguments returned from switches are left in whatever Case they were }

{entered on the commandline unless ConvertArgsToUpper is set to True.}

Const

   Blank = ' ';

Var

   counter                 : Integer;

   Blanks                  : ArgType;

{+++++++++++++++++++++++  Private Procedures to CmdParse Main  +++++++++++++}

Procedure ConvertArgsToUpperCase(Var CmdArray:CommandLineArrayType);

Var

  Counter,

  Counter2   : Integer;

begin   {--------->>>> ConvertArgsToUpperCase <<<<------------}

  For Counter :=  to ArgDSwitchNum Do

      For Counter2 :=  to Length(CmdArray.ArgDSw.Arg[counter]) DO

          CmdArray.ArgDSw.Arg[counter,Counter2] :=

                UPCASE(CmdArray.ArgDSw.Arg[counter,Counter2] );

end;    {--------->>>> ConvertArgsToUpperCase <<<<------------}

{----------------------------------------------------------------------}

Procedure ConvertSwitchesToUpperCase(Var CmdArray:CommandLineArrayType);

Var

  Counter,

  Counter2   : Integer;

begin  {--------->>>> ConvertSwitchesToUpperCase  <<<<------------}

   For Counter :=  to SwitchNum Do

      begin

      For Counter2 :=  to Length(CmdArray.Switches.Switch[counter]) DO

          CmdArray.Switches.Switch[counter,Counter2] :=

             UPCASE(CmdArray.Switches.Switch[counter,Counter2]);

      end;

   For Counter :=  to ArgDSwitchNum Do

      For Counter2 :=  to Length(CmdArray.ArgDSw.Switch[counter]) DO

          CmdArray.ArgDSw.Switch[counter,Counter2] :=

                UPCASE(CmdArray.ArgDSw.Switch[counter,Counter2] );

end;  {--------->>>> ConvertSwitchesToUpperCase  <<<<------------}

{----------------------------------------------------------------------}

Procedure InitializeArrays(Var CmdArray:CommandLineArrayType;

                           Var Nocase : Boolean  );

Var

   Counter

          : Integer;

begin     {--------->>>> InitializeArrays  <<<<------------}

  cmdArray.NoParams := False;

  For Counter :=  to SwitchNum Do

    CmdArray.Switches.present[counter] := False;

  For Counter :=  to ArgDSwitchNum Do

    begin

       CmdArray.ArgDSw.present[counter] := False;

       CmdArray.ArgDSw.Arg[counter] := Blanks;

    end;

  if NoCase then                           {convert all Switches in CmdArray}

     ConvertSwitchesToUpperCase(CmdArray); {to uppercaseif nocase is set to }

                                           {True}

end;       {--------->>>> InitializeArrays  <<<<------------}

{----------------------------------------------------------------------}

Procedure ParseNow(Var CmdArray:CommandLineArrayType;

                           Var Nocase : Boolean  );

Var

Counter,Counter2,

Start,

SwitLen,CurrentArgLen   : Integer;

Blanks                  : ArgType;

TestStr                 : SwitchType;

WorkStr                 : String;

Label

   Next_Parameter;

begin   {--------->>>> ParseNow <<<<------------}

  {check For switches without args first}

  For counter :=  to ParamCount Do

    begin  {number of Parameters Loop}

       TestStr:= ParamStr(counter);

       if Nocase Then    { covert paramStr(counter) to upper Case if NoCase}

          begin          { is set to True}

            WorkStr := TestStr;

            For Counter2 :=  to SwitchLength DO

                TestStr[counter2]  := UPCASE((WorkStr[counter2]));

          end;

      For Counter2 :=  to SwitchNum Do

           begin  { Switches without arguments loop }

              SwitLen := Length(CmdArray.Switches.Switch[Counter2]);

              if CmdArray.Switches.Switch[Counter2] =

                    Copy(TestStr,,SwitLen) then

                    begin

                       CmdArray.Switches.Present[Counter2] := True;

                       Goto Next_Parameter;

                     end;

           end; { Switches without arguments loop }

       For counter2 :=  to ArgDSwitchNum  Do

           begin     { Switches With arguments test loop }

              SwitLen := Length(CmdArray.ArgDSw.Switch[Counter2]);

              if CmdArray.ArgDSw.Switch[Counter2] =

                    Copy(TestStr,,SwitLen) then

                 begin

                    CmdArray.ArgDSw.present[Counter2] := True;

                    Start := length(CmdArray.ArgDSw.Switch[Counter2]) + ;

                    CurrentArgLen := length(paramStr(counter)) - (start-);

                    CmdArray.ArgDSw.Arg[Counter2] :=

                          Copy(ParamStr(Counter),Start,CurrentArgLen);

                    Goto Next_Parameter; {used inplace of an Exit}

                 end;

           end;     { Switches With arguments test loop }

    next_parameter:; {used to speed up execution -- Exit doesn't work here}

    end;        {number of Parameters Loop}

end;    {--------->>>> ParseNow <<<<------------}

Procedure Parsedelimited(Var CmdArray : CommandLineArrayType;

                             NoCase,

                             ConvertArgsToUpper   : Boolean );

{this Procedure will bag any String on the commandline With embedded spaces}

(*  and is delimited by Characters such as "" , {}, [], (), <>, ^^, etc ...*)

begin    {--------->>>> Parsedelimited <<<<------------}

end;     {--------->>>> Parsedelimited <<<<------------}

{----------------------------------------------------------------------}

{+++++++++++++++++++ end  Private Procedures to CmdParse Main  +++++++++++++}

{==================================== MAIN Procedure ===================}

begin           {+++++++++>>>> Procedure CmdParse  <<<<++++++++++++}

  {Init Arrays}

  For counter :=  to ArgLength do      {  the String Blanks needs to be }

      Blanks[Counter] := Blank;         {  global because most routines  }

                                        {  are useing it                 }

  InitCmdArray(CmdArray); { this Procedure located in the cmdparse.h File}

                          { assigns values to switches, etc.}

  InitializeArrays(CmdArray,NoCase);

  If ParamCount =  then                { check command line For null String}

     begin                              { if nullString then set No Params  }

        cmdArray.NoParams := True;      { and return to the calling routine }

        Exit;

     end;

   ParseNow(CmdArray, Nocase);           { routine parses the commandline   }

                                         { passing through the switches w/o }

                                         { arguments first. When Delimited  }

 { If Not(NoDelimited) then }            { switch parsing is added, it will }

   { Parsedelimited(CmdArray,NoCase);}   { occur after all other parsing    }

                                         { as a seperate routine to follow  }

                                         { PARSENOW -- additionally -- add  }

                                         { Boolean Value "NoDelimited" to   }

                                         { calling routine and Cmdparse.h   }

                                         { to bypass checking For delimited }

  if ConvertArgsToUpper then

       ConvertArgsToUpperCase(CmdArray);

end;     {+++++++++>>>> Procedure CmdParse  <<<<++++++++++++}

{======================  end CmdParse MAIN Procedure ===================}

{ /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\}

{                    Parser Utility routines                            }

{ /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\}

Procedure ConvertArgtoNumber(ArgNum : Integer;

                             Var  CmdArray : CommandLineArrayType;

                             Var  ResultNumber: Word);

Var

  code : Integer;

begin    {----------->>>> ConvertArgtoNumber <<<<---------------}

  Val(CmdArray.ArgDsw.Arg[ArgNum],ResultNumber,code);

    if code <>  then

       begin

          WriteLn('Error commandline argument: ',

                       CmdArray.ArgDsw.Switch[ArgNum],'  ',

                       CmdArray.ArgDsw.Arg[ArgNum]);

          Writeln('press enter to continue');

          readln;

          HelpUser;  {see notes}

       end;

end;     {----------->>>> ConvertArgtoNumber <<<<---------------}

{/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\}

Procedure FnameCheck(progname, progname2 :pathStr;

                     errorlevel : Byte);

Var

teststr1,teststr2 :pathStr;

begin    {----------->>>> FnameCheck <<<<---------------}

teststr1 := copy(paramstr(),(length(paramstr()) - (Length(progname)-) ),

                             Length(progname));

teststr2 := copy(paramstr(),(length(paramstr()) - (Length(progname2)-) ),

                             Length(progname2));

if ((teststr1 <> ProgName) and (teststr2 <> ProgName2))

   then

     begin

     WriteLn('Unrecoverable Error in ',progname, ', Check FileNAME');

     halt(Errorlevel);

     end;

end;     {----------->>>> FnameCheck <<<<---------------}

{/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\}

Procedure DispCmdline;

     { use For debugging -- displays the command line parameters}

     { readln at end shows screen Until enter is pressed}

VAr Count : Integer;

begin

ClrScr;

For Count :=  to  SwitchNum do

    if CmdArray.Switches.present[count] then

       WriteLn(CmdArray.Switches.Switch[count],'    Present');

For Count :=  to ArgdSwitchNum  do

    if CmdArray.ArgDsw.present[count] then

       begin

          WriteLn(CmdArray.ArgDsw.Switch[count],'   Present.');

          WriteLn('Value of:  ',CmdArray.ArgDsw.Arg[count]);

       end;

Writeln;

Write('press ENTER to continue');

ReadLn;

Halt();

end;

Procedure CheckHelp;

Var

   COUNT : Byte;

begin

   For count :=  to  do

     if cmdArray.Switches.Present[Count] then

        helpUser;

   if cmdArray.Switches.Present[] then

     displayinfo;

end;

{---------------------------Helpuser --------------------------}

Procedure HelpUser;

begin

   ClrScr;

   Writeln (CopyRightStr);

   WriteLn;

   WriteLn('USAGE: ');

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   Writeln;

   Writeln('Press Enter to continue.');

   ReadLn;

   Writeln;

   WriteLn('EXAMPLE:...............................');

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   WriteLn;

   Writeln (CopyRightStr);

   halt();

 end;

{-------------------------------------------------------------------------}

Procedure DisplayInfo;

   begin

      ClrScr;

      Writeln(copyrightStr);

      Writeln;

      Writeln('Ken Fox');

      WriteLn('1449 Maple Rd.');

      Writeln('Kintnersville Pa. 18930');

      WriteLn('215 672-9713       9 - 5 EST');

      Writeln;

      Writeln('Contact on shareware conference on Internet  -- KEN FOX');

      Writeln;

      halt();

   end;

{--------------------------------------------------------------------------}

this info is For all of the PASCAL conference people:

to use the rotuines in this Program you need to do the following

{$I path.......\Progname.h}

{$I Path.......\Helpuser.PAS}

{$I path.......\CMDPARSE.PAS}

 progname.H is a copy of the CMDPARSE.H File which contains the specific

 settings For the Program you are writing .

 HELPUSER.PAS is a Program specific help routine which get called by

 the routie CHECKHELP in CMDPARSE.PAS if the CheckHelp Procedure is

 used in the main Program. crude but effective.

 CMDPARSE.PAS -- this File contains all of the parsing routines. I keep this

 File in my .....\TP\INCLUDE directory .

 I set up a sepearte directory below the tp directory For each Program

 and copy the Files Helpuser.Pas and cmdparse.h into it thusly each

 copy of these two Files is customized For the give application While

 the actual parsing routines are kept in the INCLUDED FileS directory.

 there's no need to modify CMDPARSE.PAS

 using the parser..

       ) in the CMDPARSE.H File there are templates For all of the Array

 initializations. the switches to search For are manually inserted in to

 each Array item. additionally the Array sizes must be set where indicated

 in the CMDPARSE.H File.

{-------------------------------------------------------------------------}

  THE FOLLOWING ARE THE SETTINGS For Array SIZES

{-------------------------------------------------------------------------}

Const

SwitchLength = ;   {   maxlegth of a switch to be tested for}

ArgLength = ;     {   max length of an argument from the commandline}

DelimLength = ;     {   maxlength of delimiter if used}

SwitchNum = ;      {   the number of switches and hence the size of the Array}

                    {      of switches  without arguments                  }

ArgdSwitchNum = ;  {   the number of switches and hence the size of the Array}

                    {      of switches  With arguments                 }

DelimNum = ;       {   number of args With delimited Strings          }

{-------------------------------------------------------------------------}

     THE FOLLOWING SHOW HOW to INIT THE Array SEARCH VarIABLES..

     THESE LINES ARE ALL CONTAINED in  ---->>>> CMDPARSE.H

{-------------------------------------------------------------------------}

   Switches.Switch[] := '/?' ;     {default help String}

   Switches.Switch[] := '/h' ;     {default help String}

   Switches.Switch[] := '/H' ;     {default help String}

   Switches.Switch[] := 'HELP' ;   {default help String}

   Switches.Switch[] := 'help' ;   {default help String}

   Switches.Switch[] := 'INFO'     {show author contact Info}

{   Switches.Switch[6] := '  ' ;}   {NOT USED}

{---------------------------------}

THE FOLLOWING ARE For SWITCHES WHICH WILL CAPTURE A VALUE AS WELL AS

TEST For THE PRESENCE of THE ARGUMENT

{---------------------------------}

{  ArgDSw.Switch[1] := '' ;}       {not used}

{  ArgDSw.Switch[2] := '' ;}       {not used}

{  ArgDSw.Switch[3] := '' ;}       {NOT USED}

{  ArgDSw.Switch[4] := '' ;}       {NOT USED}

{  ArgDSw.Switch[5] := '' ;}       {NOT USED}

{  ArgDSw.Switch[6] := '' ;}       {NOT USED}

{  ArgDSw.Switch[7] := '' ;}       {NOT USED}

{-------------------------------------------------------------------------}

       ) if you intend to use the routines in HELPUSER.PAS or to perform

a Filename validation  -- there is a template at the beginning of CMDPARSE.H

with Certain Constants which must be set.

Uses Dos,Crt;

Const

  VersionNum = 'V1.0 BETA';

  ProgNameStr = 'NEWPROJ.EXE';

  ProgNameShortStr = 'NP.EXE';

  copyRightStr = ProgNameStr+' ' + VersionNum +

                ', Copyright 1992 - 1993, Ken Fox. All Rights Reserved.';

  DefaultFileName = 'NEWPROJ.DAT';

{-------------------------------------------------------------------------}

      ) To call the Various routines in  the CMDPARSE.PAS File there are

Templates which you can cut and paste into you Program from  CMDPARSE.H

{--------------------------------------------------------------------------}

{                          procs Available in CmdParse.Pas                 }

{ additional info on the following procs may be found in the cmdparse.Pas  }

{ File in the ....\tp\include directory..                                  }

{                                                                          }

{ Procedure DispCmdline;                                                   }

{                                                                          }

{ Procedure CmdParse(Var CmdArray : CommandLineArrayType;                  }

{                            NoCase,                                       }

{                            ConvertArgsToUpper   : Boolean );             }

{                                                                          }

{ Procedure ConvertArgtoNumber(ArgNum : Integer;                           }

{                             Var  CmdArray : CommandLineArrayType;        }

{                             Var  ResultNumber: Word);                    }

{                                                                          }

{ Procedure FnameCheck(progname , progname2 :pathStr;                      }

{                      errorlevel : Byte);                                 }

{                                                                          }

{ Procedure CheckHelp;                                                     }

{                                                                          }

{--------------------------------------------------------------------------}

      ) To test whether an ON/OFF switch is present (such as /?) on the

commandline  use the following:

             if CmdArray.Switches.Present[number] then

                begin

                end;

      ) to get the argument from a switch .

            if CmdArray.ArgDsw.Present[number] then

               WhatEverVariable := CmdArray.ArgDsw.Arg[number];

      ) the Procedure ConvertArgtoNumber is avail to convert a

String on the command line to a decimal number.. this is only good for

for whole numbers w/o nnn. etc.

hope this stuff is useful -- there are other notes and comments sprinkled

throughout so please check those before calling..

finally - in the interest traversing the command tail only once the most

henious of Programming Constructs -- the Goto statement -- has been used.

please forgive me in advance....

questions comments and suggestions are welcome..

see the address in the CMDPASE.DOC File..

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