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/* psmlib.psm -- utilites for writing PostScript code with the help of
 *   cpp, the C preprocessor
 * compiled by pts@fazekas.hu at Fri Sep 20 23:38:32 CEST 2002
 */

#if USE_A85D
#else
  #if USE_HEXD
  #else
    #define USE_BINARY 1
  #endif
#endif

#if USE_INDEXED2
  #define USE_PALETTE 1
#else
  #if USE_TRANSPARENT8
    #define USE_PALETTE 1
  #endif
#endif

#if USE_NO_BIND
  #define BIND_DEF def
#else
  #define BIND_DEF bind def
#endif


#if NDEBUG
  #define DEBUG(msg)
  #define ASSERT_TRUE_POP(str) pop
  #define ASSERT_FALSE_POP(str) pop
  #define ASSERT_TRUE(what,str)
  #define ASSERT_INT()
  #define INT_EQ eq
  #define INT_NE ne
  #define INT_LE le
  #define INT_GT gt
  #define INT_LT lt
  #define BOOL_BIN(op,message) op
  #define INT_BIN(op,message) op
  #define DEBUGFORCE(msg)
  #define ASSERT_STACK(list,message)
#else
  /-str /stringtype def
  /-aryb /stringtype def % byte array
  /-ary /arraytype def
  /-int /integertype def
  /-bool /booleantype def
  /-dict /dicttype def
  /handleerror.orig /handleerror load def
  /handleerror {
    (%stderr) (w) file
    dup (!!!Fatal: GS error: ) writestring
    dup $error /errorname get write==only
    dup ( in ) writestring
    dup $error /command get write==only
    dup ( at ) writestring
    dup $error /position get write==only
    dup (.\n) writestring
    flushfile flush
    handleerror.orig
    quit
  }bind def
  #define ASSERT_TRUE_POP(str) not{ str InternalError }if
  #define ASSERT_FALSE_POP(str) { str InternalError }if
  #define ASSERT_TRUE(what,str) what not{ str InternalError }if
  #define ASSERT_INT(str) dup type/integertype ne{str InternalError}if
  #define ASSERT_BOOL(str) dup type/booleantype ne{str InternalError}if
  /DumpStack { % - DumpStack -
    (Stack: ) print % from bottom to top
    count 1 sub -1 0{
      index
      dup type /stringtype eq {pop ()}if
      ===only
      ( ) print
    } for
    (.\n) print
  }bind def

  /TypeStack { % <list> TypeStack <bool>
    dup length count 2 sub eq {
      true exch count 2 add 1 index length 1 sub 0 exch 1 exch
      % Stack: ... true ary count(...)+5 0 1 ary.length-1
      {
        % Stack: ... true ary count* i
        2 index exch get 2 copy exch
        % Stack: ... true ary count* ary[i] ary[i] count*
        index type
        % Stack: ... true ary count* ary[i] ary[i] stackitem.type
        ne{
          pop pop pop pop
          % Stack: ...
          false 0 0
          exit
        }if
        pop 1 sub
        % Stack: ... true ary count*-1
      } for
      % Stack: ... true|false ary count*
      pop pop
    }{
      pop false
    }ifelse
    ASSERT_BOOL((TypeStack-bool))
  }bind def
  /InternalError { % <str> FatalError -
    (%stderr) (w) file dup dup
      (Internal muZCat Error: ) writestring
      2 index writestring
      dup (.\n) writestring
      flushfile
      pop
    quit
  }bind def
  /Stderr (%stderr) (w) file def
  #ifdef DEBUGMSG
    #define DEBUG(msg) msg Stderr exch writestring Stderr flushfile
  #else
    #define DEBUG(msg)
  #endif
  #define DEBUGFORCE(msg) msg Stderr exch writestring Stderr flushfile
  #define INT_EQ ASSERT_INT((eq2int)) exch ASSERT_INT((eq1int)) exch eq
  #define INT_NE ASSERT_INT((ne2int)) exch ASSERT_INT((ne1int)) exch ne
  #define INT_LE ASSERT_INT((le2int)) exch ASSERT_INT((le1int)) exch le
  #define INT_GT ASSERT_INT((gt2int)) exch ASSERT_INT((gt1int)) exch gt
  #define INT_LT ASSERT_INT((lt2int)) exch ASSERT_INT((lt1int)) exch lt
  #define BOOL_BIN(op,message) ASSERT_BOOL(message) exch ASSERT_BOOL(message) exch op
  #define INT_BIN(op,message)   ASSERT_INT(message) exch  ASSERT_INT(message) exch op
  #define ASSERT_STACK(list,message) TYPE_STACK(list) not{ DumpStack (assert stack: ) message concatstrings InternalError }if
  #define TYPE_STACK(list) [ list ] TypeStack
#endif

/* at Sat Sep 21 19:07:59 CEST 2002 */
#if USE_DEBUG2
  #define DEBUG2(x) x
#else
  #define DEBUG2(x)
#endif

/* revised, A85D/read_eod at Sun Sep 22 00:27:13 CEST 2002 */
/* Sample usage:
 * { TE_read(===)  % action to do with normal char
 *   #if !USE_NO_EOF
 *   { TE_read_pop exit } ifelse  % action to do on EOF
 *   #endif
 * } loop
 */
#if USE_A85D
  #define TE_read_eod a85_getc ASSERT_TRUE(dup 511 eq,(EOD expected)) pop
  #define TE_init /xS 32 def  /xD 0 def  /xC 0 def
  #if USE_NO_EOF
    #define TE_read(true_action) a85_getc true_action
    #define PSM_A85_GETC \
      {27 xS ge{exit}if STDIN read pop \
      dup 122 eq{/xS 27 def/xD 0 def/xC 0 def}{dup 117 gt{ \
      STDIN read{pop}if/xS 54 xS sub def}{dup 33 ge{xS 32 eq{dup/xC exch def/xD -1670420001 def}{dup 117 sub{1 85 \
      7225 614125}xS 28 sub get mul xD add/xD exch def}ifelse/xS xS 1 sub def}if}ifelse}ifelse pop}loop xS 22 eq{511}{xC \
      1868977 mul xD add xS 24 and neg bitshift 23 xS lt{xC 3 mul add}if 255 and/xS xS 3 eq{32}{xS 7 mod 3 \
      eq{22}{xS 8 sub}ifelse}ifelse def}ifelse
    /** TE_readstring(str) <substr> */
    #define TE_readstring(str) dup length 1 sub 0 exch 1 exch{a85_getc 3 copy put pop pop}for
  #else
    #define TE_read(true_action) a85_getc dup 256 INT_LT { true_action }
    #define TE_read_pop pop
    /* #define TE_read_eod TE_read() { ASSERT_TRUE(false,(EOD expected)) } ifelse */
    #define PSM_A85_GETC \
      {27 xS ge{exit}if STDIN read not{511}if \
      dup 122 eq{/xS 27 def/xD 0 def/xC 0 def}{dup 117 gt{ \
      STDIN read{pop}if/xS 54 xS sub def}{dup 33 ge{xS 32 eq{dup/xC exch def/xD -1670420001 def}{dup 117 sub{1 85 \
      7225 614125}xS 28 sub get mul xD add/xD exch def}ifelse/xS xS 1 sub def}if}ifelse}ifelse pop}loop xS 22 eq{511}{xC \
      1868977 mul xD add xS 24 and neg bitshift 23 xS lt{xC 3 mul add}if 255 and/xS xS 3 eq{32}{xS 7 mod 3 \
      eq{22}{xS 8 sub}ifelse}ifelse def}ifelse
  #endif
#endif
#if USE_HEXD
  #define TE_init
  #if USE_NO_EOF
    #define TE_read(true_action) STDIN C readhexstring pop 0 get true_action
    #define TE_read_eod STDIN read pop pop /* read '>' */
    #define TE_readstring(str) STDIN str readhexstring pop
  #else
    #error PostScript op readhexstring cannot detect EOD!
    #define TE_read(true_action) STDIN C readhexstring { 0 get true_action }
    #define TE_read_pop
    #define TE_read_eod
  #endif
#endif
#if USE_BINARY
  #define TE_init
  #define TE_read_eod
  #if USE_NO_EOF
    #define TE_read(true_action) STDIN read pop true_action
    #define TE_readstring(str) STDIN str readstring pop
  #else
    #define TE_read(true_action) STDIN read { true_action }
    #define TE_read_pop
  #endif
#endif