Belgian Amiga Club - ADF Collection/BS1 part 27.zip/BS1 part 27/ImageMaster_d3.adf/piarc.lzh.parta/gif.rexx

OS/2 REXX Batch file | 1993-04-14 | 5KB | 208 lines

/* ARexx GIF */
parse arg var1
/*
 * GIF.rexx - GIF image load
 *
 * If you encounter  a .GIF file we do not read, sent it to us (we suggest
 * you use the Black Belt Bulletin Board at 1-406-367 2227) with an
 * explanation and we will endeavor to extend our loader to handle it.
 *
 *  Written by: Black Belt Systems  Technical Development
 * Last Update: March 25th, 1993
 *    Revision: 1.01
 *         For: Black Belt Systems image processing series IM, IM F/c, and IP.
 *
 * Modifications:
 *        1.01  25 Mar 1993  (BC)  Did not report on insufficient memory for
 *                                 new buffer from IM prior to 9.51
 *        1.00  25 Feb 1993  (BC)  Replaces loader inside IM.
 *                                 More robust.
 *                                 Streamlined calling procedure.
 *
 */
call pragma('stack',20000);

/*
 * open rexxsupport.library -- needed for some functions
 */
if ~show('L',"rexxsupport.library") then do
  if addlib('rexxsupport.library',0,-30,0) then do
      /* everything's ok */
    end;
  else do
    say 'We Have A Library Problem, Unable To Load "rexxsupport.library"';
    say 'Cannot operate script without this library - sorry!';
    exit 10;
    end;
  end;

prtnme = 'IM_Port';
cmdpath = 'cmpi:';

/*
 * Get the file name parts
 */
  prevpath = 'ram:';
  if show('C',rawpath) = 1 then do
    prevpath = getclip(rawpath);
    end;
  prevname = 'image';
  if show('C',rawname) = 1 then do
    prevname = getclip(rawname);
    end;
  prevext = '.GIF';
  if show('C',rawext) = 1 then do
    prevext = getclip(rawext);
    end;

address(prtnme);
'autoredraw 0';

if var1 = 'load' then do
  loadquestion = 0
  end
else if var1 = 'save' then do
  loadquestion = 1
  end
else do
  options results;
  'gadgets "Load .GIF","Image","Save .GIF","Image"';
  loadquestion = result-1;
  options;
  end

if loadquestion < 0 then do
  address(prtnme);
  'tofront';
  exit 0;
  end

if loadquestion = 0 then do
  options results;
  'filerequest "'||prevpath||'" "'||prevname||'" "'||prevext||'" '||'"Load .GIF"';
  GIFfile = result;
  options;
  call checkfile(GIFfile);
  end
if loadquestion = 1 then do
  options results;
  'filerequest "'||prevpath||'" "'||prevname||'" "'||prevext||'" '||'"Save .GIF"';
  GIFfile = result;
  options;
  call checkfile(GIFfile);

  /* Could put compression question Here !! */

  end

    options results;
    'jackin';
    jack = result;
    options;

    address command cmdpath||'GIF '||jack||' '||loadquestion||' "'||GIFfile||'" '||prevname||' '||compression;
    address(prtnme);

'autoredraw 1';

exit 0;




checkfile:
arg thefile;
  if thefile = 'FR_CANCELLED' then do
    address(prtnme);
    'tofront';
    exit 0;
    end;
  prevpath = gimmepath(thefile);
  call setclip(rawpath,prevpath);
  prevname = gimmename(thefile);
  call setclip(rawname,prevname);
  prevext  = gimmeext(thefile);
  call setclip(rawext,prevext);
  return;
  end

/*
 * gimmepath
 *
 * This takes the provided argument and sucks the path out of it, then
 * returns that path to the caller, sans file name.
 */
gimmepath:
  arg fullnamegx;
    tempgx = reverse(fullnamegx);
    lengx = length(fullnamegx);   /* get length of string */
    slashdex = index(tempgx,'/'); /* first occurance of '/' from right */
    colondex = index(tempgx,':');  /* first occurance of ':' from right */
    seploc = 0; /* assumes current dir, no path supplied */
    if slashdex ~= 0 then do /* we assume we are in a DIR */
      seploc = (lengx - slashdex)+1;
      end;
    else do
      if colondex ~= 0 then do /* we assume we are on a device */
        seploc = (lengx - colondex)+1;
        end;
      end;
  gxname = substr(fullnamegx,seploc+1); /* if you ever need it */
  gxpath = left(fullnamegx,seploc);
  return(gxpath);
  end


gimmename:
  arg fullnamegx;
    tempgx = reverse(fullnamegx);
    lengx = length(fullnamegx);   /* get length of string */
    slashdex = index(tempgx,'/'); /* first occurance of '/' from right */
    colondex = index(tempgx,':');  /* first occurance of ':' from right */
    seploc = 0; /* assumes current dir, no path supplied */
    if slashdex ~= 0 then do /* we assume we are in a DIR */
      seploc = (lengx - slashdex)+1;
      end;
    else do
      if colondex ~= 0 then do /* we assume we are on a device */
        seploc = (lengx - colondex)+1;
        end;
      end;
  extpos = lastpos(".",fullnamegx) - 2;
  if extpos > seploc then do
    gxname = substr(fullnamegx,seploc+1,extpos-seploc+1);
    end;
  else do
    gxname = substr(fullnamegx,seploc+1);
    end;
  return(gxname);
  end


gimmeext:
  arg fullnamegx;
    tempgx = reverse(fullnamegx);
    lengx = length(fullnamegx);   /* get length of string */
    slashdex = index(tempgx,'/'); /* first occurance of '/' from right */
    colondex = index(tempgx,':');  /* first occurance of ':' from right */
    seploc = 0; /* assumes current dir, no path supplied */
    if slashdex ~= 0 then do /* we assume we are in a DIR */
      seploc = (lengx - slashdex)+1;
      end;
    else do
      if colondex ~= 0 then do /* we assume we are on a device */
        seploc = (lengx - colondex)+1;
        end;
      end;
  extpos = lastpos(fullnamegx,'.');
  if extpos > seploc then do
    gxext = substr(fullnamegx,extpos+1);
    end
  else do
    gxext = '';
    end
  return(gxext);
  end