Digital-Research-Source-Code/MPM OPERATING SYSTEMS/MPM-86/MPM-86 2.0 SOURCES/10/PRINT.PLM

$title ('PRINT MODULE')
print:
do;

/*

  modified  3/26/81  R. Silberstein
  modified  3/30/81  R. Silberstein
  modified  4/7/81   R. Silberstein
  modified  4/9/81   R. Silberstein
  modified  4/16/81  R. Silberstein
  modified  4/20/81  R. Silberstein
  modified  5/5/81   R. Silberstein
  modified  7/24/81  R. Silberstein
  modified  7/27/81  R. Silberstein
  modified  8/19/81  R. Silberstein
  modified  9/2/81   R. Silberstein
  modified  9/19/81  R. Silberstein

*/

$include (:f1:macro.lit)
$include (:f1:struc.lit)
$INCLUDE (:F1:DEV.LIT)
$include (:f1:files.ext)
$include (:f1:subr2.ext)
$include (:f1:global.ext)
$include (:f1:text.ext)

dcl
pageno          byte,   /* current page no */
lineno          byte,   /* current line no */
col             byte,   /* column counter */
field1start lit '6',    /* start of hexoutput print */
FIELD15START LIT '19',  /* START OF ABSOLUTE ADDRESS FIELD */
field2start lit '24';   /* start of source output print */

printbyt: proc(ch);
  dcl ch byte;
  if not asciichar(ch) then ch='#';
  if ch <> lf then col=col+1;
  if ch = cr then col=0;
  call outprintbyte(ch);
end printbyt;

advance: proc(n);       /* advance to column "n" */
  dcl n byte;
  do while n > col;
    call printbyt(space);
  end$while;
end advance;

printtext: proc(s);
  dcl s address,ch based s byte;
  DO WHILE CH <> 0;
    CALL PRINTBYT (CH);
    S = S + 1;
  END;
end printtext;

printheader: proc;
  COL = 0;
  pageno=pageno+1;
  call printtext(.initials);
  call printtext(.sourcename);
  call printtext(.('  ',0));
  call printtext(.title);
  call advance(maxcol-11);
  call printtext(.pagetext);
  call decout(pageno,.help(0));
  call printtext(.help(1));
  call printtext(.(cr,lf,cr,lf,cr,lf,0));
  lineno=4;
end printheader;

/* Public routine to perform page eject */

eject: proc public;
  if simform then$do
    do while (lineno:=lineno+1) <= pagesize;
      call printbyt(cr);
      call printbyt(lf);
    end$while;
  else$do
    call outprintbyte(formfeed);
  end$if;
  lineno=0;
end eject;

printnewpage: proc public;
  IF LINENO > 4 THEN$DO
    call eject;
    call printheader;
  END$IF;
end printnewpage;

incrementline: proc;
  lineno = lineno + 1;
  if lineno >= pagesize - 10 then call printnewpage;
end incrementline;

/* Print single byte,update column counter,
   expand tabs (each 8.th column)  */

print$single$byte: proc(ch) public;
  dcl ch byte;
  if ch=tab then$do
    ch=8-((col-field2start) mod 8);
    do while (ch:=ch-1) <> 0ffh;
      call printbyt(space);
    end$while;
  else$do
    call printbyt(ch);
    if ch = lf then call incrementline;
  end$if;
end print$single$byte;

print$crlf: proc public;
  call print$single$byte(cr);
  call print$single$byte(lf);
end print$crlf;

/* Print a field given by last column of field,source-
   array containing ascii bytes,index of this array, and
   index of last byte of source array. Before entry, the
   current column position must be start of this field. */

print$field: proc (sourceindex,s,lastindex,stopcol);
  dcl (sourceindex,s,lastindex) address,
      stopcol byte,
      source based s (1) byte,
      k based sourceindex byte,
      last based lastindex byte;

  do while col < stopcol and k < last;
    call print$single$byte(source(k));
    k=k+1;
  end$while;
end print$field;

print$sl: proc;
  dcl (i,j) byte;
  DECLARE K BYTE;

  IF (PRINTDEVICE = NULL) AND NOT ERRORPRINTED THEN RETURN;   /* NO NEED TO WASTE TIME HERE */
  if include$on then$do
    prefix(0)='=';
    if prefixptr=0 then prefixptr=1;
  end$if;
  i,j,col=0;
                /* print first field of line prefix */
  call printfield(.i,.prefix(0),.prefixptr,field1start);

                        /* Print rest of prefix and source.
                           If line overflow, print rest on
                           following lines. */

  if prefixptr-i+sourceptr > 0 then$do
    do while (prefixptr-i) + (sourceptr-j) >0;
      call advance(field1start);
      call printfield(
           .i,.prefix(0),.prefixptr,((field15start-1)/3)*3);
      IF ABSADDR (0) <> SPACE THEN$DO
        CALL ADVANCE (FIELD15START);
        DO K = 0 TO 3;
          CALL PRINTSINGLEBYTE (ABSADDR (K));
        END;
      END$IF;
      if sourceptr-j >0 then$do
        call advance(field2start);
        call printfield(.j,.sourcebuf(0),.sourceptr,maxcol-1);
      end$if;
      call printcrlf;
    end$while;
  else$do
    call printcrlf;
  end$if;
end print$sl;

/* Public routine to print prefix and source line on printfile. */

print$source$line: proc public;
  IF PRINT$ON OR ERRORPRINTED THEN CALL PRINT$SL;
  CALL FILL (SPACE, PREFIXPTR, .PREFIX);
  CALL FILL (SPACE, LENGTH (ABSADDR), .ABSADDR);
  prefixptr,sourceptr=0;
end print$source$line;

/* Public routine to initiate print module */

printinit: proc public;
  if print$on then$do
    pageno=0;
    LINENO = 0FFH;
    CALL PRINTNEWPAGE;
  end$if;
end printinit;


/* Public routine to print module information on printfile */

printterminate: proc (USEFACT) public;
  DECLARE USEFACT BYTE;
  if print$on then$do
    CALL PRINTCRLF;
    CALL PRINTCRLF;
    call printtext(.endtext);  /* END OF ASSEMBLY. NO OF ERRORS: */
    call decout(errors,.help(0));
    call printtext(.help(2));
    CALL PRINTTEXT (.USEFACTOR);
    CALL DECOUT (USEFACT, .HELP (0));
    CALL PRINTTEXT (.HELP (3));
    CALL PRINTTEXT (.(25H,CR,LF,0));   /* % */
  end$if;
end printterminate;

end$module print;