/* $XConsortium: scanfont.c,v 1.9 92/07/07 17:14:56 gildea Exp $ */
/* Copyright International Business Machines,Corp. 1991
 * All Rights Reserved
 *
 * License to use, copy, modify, and distribute this software
 * and its documentation for any purpose and without fee is
 * hereby granted, provided that the above copyright notice
 * appear in all copies and that both that copyright notice and
 * this permission notice appear in supporting documentation,
 * and that the name of IBM not be used in advertising or
 * publicity pertaining to distribution of the software without
 * specific, written prior permission.
 *
 * IBM PROVIDES THIS SOFTWARE "AS IS", WITHOUT ANY WARRANTIES
 * OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT
 * LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT OF
 * THIRD PARTY RIGHTS.  THE ENTIRE RISK AS TO THE QUALITY AND
 * PERFORMANCE OF THE SOFTWARE, INCLUDING ANY DUTY TO SUPPORT
 * OR MAINTAIN, BELONGS TO THE LICENSEE.  SHOULD ANY PORTION OF
 * THE SOFTWARE PROVE DEFECTIVE, THE LICENSEE (NOT IBM) ASSUMES
 * THE ENTIRE COST OF ALL SERVICING, REPAIR AND CORRECTION.  IN
 * NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
 * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
 * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 * SOFTWARE.
 */
/* Author: Katherine A. Hitchcock    IBM Almaden Research Laboratory */
 
#include <string.h>
#include "t1stdio.h"
#include "util.h"
#include "token.h"
#include "fontfcn.h"
#include "blues.h"
 
 
 
static int rc;
static boolean InPrivateDict;
static boolean WantFontInfo;
static boolean TwoSubrs;
static psobj inputFile;
static psobj filterFile;
static psobj *inputP;


extern int T1Getc(F_FILE * );
extern int T1Ungetc( int,F_FILE *);
extern int SearchDictName( psdict *dictP, psobj *keyP);
extern void T1io_setblocklen( long len);

 
/* functions from util.c */
extern void objFormatInteger(psobj *objP, int value);
extern void objFormatReal(psobj *objP, float value); 
extern void objFormatBoolean(psobj *objP, boolean value);
extern void objFormatEncoding( psobj *objP, int length, psobj *valueP);
extern void objFormatArray( psobj *objP, int length, psobj *valueP);
extern void objFormatString( psobj *objP, int length, char *valueP);
extern void objFormatName( psobj *objP, int length, char *valueP);
extern void objFormatFile( psobj *objP, FILE *valueP);


/**********************************************************************/
/*   Init_BuiltInEncoding()                                           */
/*                                                                    */
/*     Initializes the StandardEncoding.                              */
/*                                                                    */
/**********************************************************************/
typedef struct				/* Builtin Standard Encoding */
{
   int  index;
   char *name;
} EncodingTable;


char not_def[]=".notdef";


static EncodingTable StdEnc[] = {
   {040 , "space"},
   {041 , "exclam"},
   {042 , "quotedbl"},
   {043 , "numbersign"},
   {044 , "dollar"},
   {045 , "percent"},
   {046 , "ampersand"},
   {047 , "quoteright"},
   {050 , "parenleft"},
   {051 , "parenright"},
   {052 , "asterisk"},
   {053 , "plus"},
   {054 , "comma"},
   {055 , "hyphen"},
   {056 , "period"},
   {057 , "slash"},
   {060 , "zero"},
   {061 , "one"},
   {062 , "two"},
   {063 , "three"},
   {064 , "four"},
   {065 , "five"},
   {066 , "six"},
   {067 , "seven"},
   {070 , "eight"},
   {071 , "nine"},
   {072 , "colon"},
   {073 , "semicolon"},
   {074 , "less"},
   {075 , "equal"},
   {076 , "greater"},
   {077 , "question"},
   {0100 , "at"},
   {0101 , "A"},
   {0102 , "B"},
   {0103 , "C"},
   {0104 , "D"},
   {0105 , "E"},
   {0106 , "F"},
   {0107 , "G"},
   {0110 , "H"},
   {0111 , "I"},
   {0112 , "J"},
   {0113 , "K"},
   {0114 , "L"},
   {0115 , "M"},
   {0116 , "N"},
   {0117 , "O"},
   {0120 , "P"},
   {0121 , "Q"},
   {0122 , "R"},
   {0123 , "S"},
   {0124 , "T"},
   {0125 , "U"},
   {0126 , "V"},
   {0127 , "W"},
   {0130 , "X"},
   {0131 , "Y"},
   {0132 , "Z"},
   {0133 , "bracketleft"},
   {0134 , "backslash"},
   {0135 , "bracketright"},
   {0136 , "asciicircum"},
   {0137 , "underscore"},
   {0140 , "quoteleft"},
   {0141 , "a"},
   {0142 , "b"},
   {0143 , "c"},
   {0144 , "d"},
   {0145 , "e"},
   {0146 , "f"},
   {0147 , "g"},
   {0150 , "h"},
   {0151 , "i"},
   {0152 , "j"},
   {0153 , "k"},
   {0154 , "l"},
   {0155 , "m"},
   {0156 , "n"},
   {0157 , "o"},
   {0160 , "p"},
   {0161 , "q"},
   {0162 , "r"},
   {0163 , "s"},
   {0164 , "t"},
   {0165 , "u"},
   {0166 , "v"},
   {0167 , "w"},
   {0170 , "x"},
   {0171 , "y"},
   {0172 , "z"},
   {0173 , "braceleft"},
   {0174 , "bar"},
   {0175 , "braceright"},
   {0176 , "asciitilde"},
   {0241 , "exclamdown"},
   {0242 , "cent"},
   {0243 , "sterling"},
   {0244 , "fraction"},
   {0245 , "yen"},
   {0246 , "florin"},
   {0247 , "section"},
   {0250 , "currency"},
   {0251 , "quotesingle"},
   {0252 , "quotedblleft"},
   {0253 , "guillemotleft"},
   {0254 , "guilsinglleft"},
   {0255 , "guilsinglright"},
   {0256 , "fi"},
   {0257 , "fl"},
   {0261 , "endash"},
   {0262 , "dagger"},
   {0263 , "daggerdbl"},
   {0264 , "periodcentered"},
   {0266 , "paragraph"},
   {0267 , "bullet"},
   {0270 , "quotesinglbase"},
   {0271 , "quotedblbase"},
   {0272 , "quotedblright"},
   {0273 , "guillemotright"},
   {0274 , "ellipsis"},
   {0275 , "perthousand"},
   {0277 , "questiondown"},
   {0301 , "grave"},
   {0302 , "acute"},
   {0303 , "circumflex"},
   {0304 , "tilde"},
   {0305 , "macron"},
   {0306 , "breve"},
   {0307 , "dotaccent"},
   {0310 , "dieresis"},
   {0312 , "ring"},
   {0313 , "cedilla"},
   {0315 , "hungarumlaut"},
   {0316 , "ogonek"},
   {0317 , "caron"},
   {0320 , "emdash"},
   {0341 , "AE"},
   {0343 , "ordfeminine"},
   {0350 , "Lslash"},
   {0351 , "Oslash"},
   {0352 , "OE"},
   {0353 , "ordmasculine"},
   {0361 , "ae"},
   {0365 , "dotlessi"},
   {0370 , "lslash"},
   {0371 , "oslash"},
   {0372 , "oe"},
   {0373 , "germandbls"},
   { 0,  0 }
};


/* Encodings changed from static to global since they must be accessible
   by T1_LoadFont() when reallocating memory. */
psobj *StdEncArrayP = NULL;


static psobj *MakeEncodingArrayP(encodingTable)
    EncodingTable *encodingTable;
{
  int i;
  psobj *encodingArrayP;
 
  encodingArrayP = (psobj *)vm_alloc(256*(sizeof(psobj)));
  if (!encodingArrayP)
      return NULL;

  /* initialize everything to .notdef */
  for (i=0; i<256;i++)
      objFormatName(&(encodingArrayP[i]),7, not_def);

  for (i=0; encodingTable[i].name; i++)
  {
    objFormatName(&(encodingArrayP[encodingTable[i].index]),
		  strlen(encodingTable[i].name),
		  encodingTable[i].name);
  }

  return(encodingArrayP);
}
 
boolean Init_BuiltInEncoding()
{
  StdEncArrayP = MakeEncodingArrayP(StdEnc);
  return ((boolean)StdEncArrayP);
}
 
/********************************************************************/
/***================================================================***/
static int getNextValue(valueType)
    int valueType;
{
  scan_token(inputP);
  if (tokenType != valueType) {
    return(SCAN_ERROR);
  }
  return(SCAN_OK);
 
}
/***================================================================***/
/*  This routine will set the global rc if there is an error          */
/***================================================================***/
static int getInt()
{
  scan_token(inputP);
  if (tokenType != TOKEN_INTEGER) {
    rc = SCAN_ERROR;
    return(0);
  }
  else {
    return( tokenValue.integer);
  }
 
}
/***================================================================***/
/*
 * See Sec 10.3 of ``Adobe Type 1 Font Format'' v1.1,
 * for parsing Encoding.
 */
static int getEncoding(arrayP)
    psobj *arrayP;
{

  scan_token(inputP);
  if ((tokenType == TOKEN_NAME) &&
      ((tokenLength==16) && (!strncmp(tokenStartP,"StandardEncoding",16))) 
      )
    {
      /* Adobe Standard Encoding */

      if (tokenLength == 16)
	  arrayP->data.valueP = (char *) StdEncArrayP;
      else
	return(SCAN_ERROR);
      

      arrayP->len = 256;
      return(SCAN_OK);
  }
  else if ( (tokenType == TOKEN_LEFT_BRACE) ||
       (tokenType == TOKEN_LEFT_BRACKET) )
  {
      /* Array of literal names */

      psobj *objP;
      int i;

      objP = (psobj *)vm_alloc(256*(sizeof(psobj)));
      if (!(objP)) return(SCAN_OUT_OF_MEMORY);

      arrayP->data.valueP = (char *) objP;
      arrayP->len = 256;

      for (i=0; i<256; i++, objP++)
      {
	  scan_token(inputP);
	  
	  if (tokenType != TOKEN_LITERAL_NAME)
	      return(SCAN_ERROR);

	  if (!(vm_alloc(tokenLength)) ) return(SCAN_OUT_OF_MEMORY);
	  objFormatName(objP,tokenLength,tokenStartP);
      }

      scan_token(inputP);
      if ( (tokenType == TOKEN_RIGHT_BRACE) ||
	  (tokenType == TOKEN_RIGHT_BRACKET) )
	  return(SCAN_OK);
  }
  else
  {
      /* Must be sequences of ``dup <index> <charactername> put" */

      psobj *objP;
      int i;

      objP = (psobj *)vm_alloc(256*(sizeof(psobj)));
      if (!(objP)) return(SCAN_OUT_OF_MEMORY);

      arrayP->data.valueP = (char *) objP;
      arrayP->len = 256;

      for (i=0; i<256; i++)
	  objFormatName(objP + i, 7, not_def);

      while (TRUE)
      {
	  scan_token(inputP);

	  switch (tokenType)
	  {
	  case TOKEN_NAME:
	      if (tokenLength == 3)
	      {
		  if (strncmp(tokenStartP,"dup",3) == 0)
		  {
		      /* get <index> */
		      scan_token(inputP);
		      if (tokenType != TOKEN_INTEGER ||
			  tokenValue.integer < 0 ||
			  tokenValue.integer > 255)
			  return (SCAN_ERROR);
		      i = tokenValue.integer;

		      /* get <characer_name> */
		      scan_token(inputP);
		      if (tokenType != TOKEN_LITERAL_NAME)
			  return(SCAN_ERROR);

		      if (!(vm_alloc(tokenLength)) )
			  return(SCAN_OUT_OF_MEMORY);
		      objFormatName(objP + i,tokenLength,tokenStartP);

		      /* get "put" */
		      scan_token(inputP);
		      if (tokenType != TOKEN_NAME)
			  return(SCAN_ERROR);
		  }
		  else if (strncmp(tokenStartP,"def",3) == 0)
		      return (SCAN_OK);
	      }
	      break;
	  case TOKEN_EOF:
	  case TOKEN_NONE:
	  case TOKEN_INVALID:
	      return (SCAN_ERROR);
	  }
      }
  }

  return (SCAN_ERROR);
}
/***================================================================***/
static int getArray(arrayP)
    psobj *arrayP;
{
  int N;   /* count the items in the array */
  psobj *objP;
  
 
  scan_token(inputP);
  if ( (tokenType != TOKEN_LEFT_BRACE) &&
       (tokenType != TOKEN_LEFT_BRACKET) ) {
    return(SCAN_ERROR);
  }
  /* format the array in memory, save pointer to the beginning */
  arrayP->data.valueP = tokenStartP;
  /* loop, picking up next object, until right BRACE or BRACKET */
  N = 0;
  do {
    scan_token(inputP);
    if ( (tokenType == TOKEN_RIGHT_BRACE) ||
         (tokenType == TOKEN_RIGHT_BRACKET) ) {
      /* save then number of items in the array */
      arrayP->len = N;
      return(SCAN_OK);
    }
     /* allocate the space for the object */
    objP = (psobj *)vm_alloc(sizeof(psobj));
    if (!(objP)) return(SCAN_OUT_OF_MEMORY);
 
    /* array is an array of numbers, (real or integer)  */
    if (tokenType == TOKEN_REAL) {
      objFormatReal(objP, tokenValue.real);
    }
    else
      if (tokenType == TOKEN_INTEGER) {
        objFormatInteger(objP, tokenValue.integer);
      }
      else return(SCAN_ERROR);
    N++;
  }  while ( 1>0 );
  /* NOTREACHED*/
}
/***================================================================***/
/* is not needed */
/*
  static int getName(nameP)
  char *nameP;
  {
  do { 
  scan_token(inputP);
  if (tokenType <= TOKEN_NONE) {
  if (tokenTooLong) return(SCAN_OUT_OF_MEMORY);
  return(SCAN_ERROR);
  }
  } while ((tokenType != TOKEN_NAME) ||
  (0 != strncmp(tokenStartP,nameP,strlen(nameP))) );
  
  return(SCAN_OK);
  }
*/

/***================================================================***/
static int getNbytes(N)
    int N;
{
  int I;
 
  if (N > vm_free_bytes()) {
    if (!vm_init()) return(SCAN_OUT_OF_MEMORY);
  }
  tokenStartP = vm_next_byte();
  I = fread(tokenStartP,1,N,inputP->data.fileP);
  if ( I != N )     return(SCAN_FILE_EOF);
  return(SCAN_OK);
}
 
/***================================================================***/
/*  getLiteralName(nameObjP)                                          */
/*     scan for next literal.                                         */
/*  if we encounter the name 'end' then terminate and say ok.         */
/*    It means that the CharStrings does not have as many characters  */
/*    as the dictionary said it would and that is ok.                 */
/***================================================================***/
static int getLiteralName(nameObjP)
    psobj *nameObjP;
{
  do {
    scan_token(inputP);
    if (tokenType <= TOKEN_NONE) {
      if (tokenTooLong) return(SCAN_OUT_OF_MEMORY);
      return(SCAN_ERROR);
    }
    if (tokenType == TOKEN_NAME) {
      if (0 == strncmp(tokenStartP,"end",3) ) {
        return(SCAN_END);
      }
    }
  } while  (tokenType != TOKEN_LITERAL_NAME) ;
  nameObjP->len = tokenLength;
  /* allocate all the names in the CharStrings Structure */
  if (!(vm_alloc(tokenLength)) ) return(SCAN_OUT_OF_MEMORY);
  nameObjP->data.valueP =  tokenStartP;
  /* found */
  return(SCAN_OK);
}
 
/***================================================================***/
/*
 *   BuildSubrs routine 
 */
/***================================================================***/
 
static int BuildSubrs(FontP)
    psfont *FontP;
{
   int N;   /* number of values in Subrs */
   int I;   /* index into Subrs */
   int i;   /* loop thru  Subrs */
   int J;   /* length of Subrs entry */
   psobj *arrayP;
 
   /* next token should be a positive int */
   /* note: rc is set by getInt. */
   N = getInt();
   if (rc) return(rc);
   if (N < 0 ) return(SCAN_ERROR);
   /* if we already have a Subrs, then skip the second one */
   /* The second one is for hiresolution devices.          */
   if (FontP->Subrs.data.arrayP != NULL) {
     TwoSubrs = TRUE;
     /* process all the Subrs, but do not update anything */
     /* can not just skip them because of the binary data */
     for (i=0;i<N;i++) {
       /* look for "dup" or "ND" or "|-" or (noaccess) "def". If one of
	  the latter three token appears, we are done even if still i < N-1.
	  in this case, there arenīt as much subroutines as fields in the
	  array which is allowed (Fix thanks to Derek B. Noonburg) */
       do {
	 rc = getNextValue(TOKEN_NAME);
	 if ( rc != SCAN_OK ) return(rc);
	 if (!strncmp(tokenStartP, "ND", 2) ||
	     !strncmp(tokenStartP, "|-", 2) ||
	     !strncmp(tokenStartP, "def", 3)) {
	   return SCAN_OK;
	 }
       } while (strncmp(tokenStartP, "dup", 3));
       if (rc) return(rc);
       /* get 2 integers */
       I = getInt();
       if (rc) return(rc);
       J = getInt();
       if (rc) return(rc);
       if ( (I < 0) || (J < 0 ) ) return (SCAN_ERROR);
       /* get the next token, it should be RD or -|, either is ok */
       rc = getNextValue(TOKEN_NAME);
       if ( rc != SCAN_OK ) return(rc);
       rc = getNbytes(J);
       if (rc) return(rc);
     }
     return(SCAN_OK);
   }
 
   arrayP = (psobj *)vm_alloc(N*sizeof(psobj));
   if (!(arrayP) ) return(SCAN_OUT_OF_MEMORY);
   /* explicitly resetting the array is not necessary since the pointer
      as well as the subroutines both are located in VM and we can
      assume that only define subroutines are referenced. */
   FontP->Subrs.len = N;
   FontP->Subrs.data.arrayP =  arrayP;
   /* get N values for Subrs */
   for (i=0;i<N;i++) {
     /* look for "dup" or "ND" or "|-" or (noaccess) "def". If one of
	the latter three token appears, we are done even if still i < N-1.
	in this case, there arenīt as much subroutines as fields in the
	array which is allowed (Fix thanks to Derek B. Noonburg) */
     do {
       rc = getNextValue(TOKEN_NAME);
       if ( rc != SCAN_OK ) return(rc);
       if (!strncmp(tokenStartP, "ND", 2) ||
	   !strncmp(tokenStartP, "|-", 2) ||
	   !strncmp(tokenStartP, "def", 3)) {
	 return SCAN_OK;
       }
     } while (strncmp(tokenStartP, "dup", 3));
     /* get 2 integers */
     I = getInt();       /* index into array of Subroutines */
     if (rc) return(rc); 
     J = getInt();       /* number of binary bytes that follow */
     if (rc) return(rc);
     if ( (I < 0) || (J < 0 ) ) return (SCAN_ERROR);
     arrayP[I].len = J;
     /* get the next token, it should be RD or -|, either is ok */
     rc = getNextValue(TOKEN_NAME);
     if ( rc != SCAN_OK ) return(rc);
     rc = getNbytes(J);
     if (rc == SCAN_OK) {
       arrayP[I].data.valueP = tokenStartP;
       if ( !(vm_alloc(J)) ) return(SCAN_OUT_OF_MEMORY);
     }
     else return(rc);
   }
   return(SCAN_OK);
 
}


/***================================================================***/
/***================================================================***/
/*
 *   BuildCharStrings routine
 */
/***================================================================***/
 
static int BuildCharStrings(FontP)
    psfont   *FontP;
{
   int N;   /* number of values in CharStrings */
   int i;   /* loop thru  Subrs */
   int J;   /* length of Subrs entry */
   psdict  *dictP;
 
   /* next token should be a positive int */
   N = getInt();
   if (rc) {
     /* check if file had TwoSubrs, hi resolution stuff is in file*/
     if (TwoSubrs) {
       do {
         scan_token(inputP);
         if (tokenType <= TOKEN_NONE) {
           if (tokenTooLong) return(SCAN_OUT_OF_MEMORY);
           return(SCAN_ERROR);
         }
       } while (tokenType != TOKEN_INTEGER);
       N = tokenValue.integer;
     }
     else return(rc);  /* if next token was not an Int */
   }
   if (N<=0) return(SCAN_ERROR);
   /* save number of entries in the dictionary */
 
   dictP = (psdict *)vm_alloc((N+1)*sizeof(psdict));
   if (!(dictP)) return(SCAN_OUT_OF_MEMORY);
   FontP->CharStringsP = dictP;
   dictP[0].key.len = N;
   /* get N values for CharStrings */
   for (i=1;i<=N;i++) {
     /* look for next literal name  */
     rc = getLiteralName(&(dictP[i].key));
     /* If rc=SCAN_END, the end of file has been reached. This means
	there were less than N charstrings. This is perfectly valid. */
     if (rc) return(rc);
     /* get 1 integer */
     J = getInt();
     if (rc) return(rc);  /* if next token was not an Int */
     if (J<0) return (SCAN_ERROR);
     dictP[i].value.len = J;
     /* get the next token, it should be RD or -|, either is ok */
     rc = getNextValue(TOKEN_NAME);
     if ( rc != SCAN_OK ) return(rc);
     rc = getNbytes(J);
     if (rc == SCAN_OK) {
       dictP[i].value.data.valueP = tokenStartP;
       if ( !(vm_alloc(J)) ) return(SCAN_OUT_OF_MEMORY);
     }
     else {
       return(rc);
     }
     
   }
   return(SCAN_OK);
 
}
/***================================================================***/
/***================================================================***/
/*
 *   BuildFontInfo Dictionary
 */
/***================================================================***/
static int BuildFontInfo(fontP)
    psfont *fontP;
{
  psdict *dictP;
  
  /* allocate the private dictionary */
  dictP = (psdict *)vm_alloc(20*sizeof(psdict));
  if (!(dictP)) return(SCAN_OUT_OF_MEMORY);
 
  fontP->fontInfoP = dictP;
  fontP->fontInfoP[0].key.len = 17;  /* number of actual entries */
  objFormatName(&(dictP[FONTNAME].key),8,"FontName");
  objFormatName(&(dictP[FONTNAME].value),0,NULL);
  objFormatName(&(dictP[PAINTTYPE].key),9,"PaintType");
  objFormatInteger(&(dictP[PAINTTYPE].value),0);
  objFormatName(&(dictP[FONTTYPENUM].key),8,"FontType");
  objFormatInteger(&(dictP[FONTTYPENUM].value),0);
  objFormatName(&(dictP[FONTMATRIX].key),10,"FontMatrix");
  objFormatArray(&(dictP[FONTMATRIX].value),0,NULL);
  objFormatName(&(dictP[FONTBBOX].key),8,"FontBBox");
  objFormatArray(&(dictP[FONTBBOX].value),0,NULL);
  objFormatName(&(dictP[ENCODING].key),8,"Encoding");
  objFormatEncoding(&(dictP[ENCODING].value),0,NULL);
  objFormatName(&(dictP[UNIQUEID].key),8,"UniqueID");
  objFormatInteger(&(dictP[UNIQUEID].value),0);
  objFormatName(&(dictP[STROKEWIDTH].key),11,"StrokeWidth");
  objFormatReal(&(dictP[STROKEWIDTH].value),0.0);
  objFormatName(&(dictP[VERSION].key),7,"version");
  objFormatString(&(dictP[VERSION].value),0,NULL);
  objFormatName(&(dictP[NOTICE].key),6,"Notice");
  objFormatString(&(dictP[NOTICE].value),0,NULL);
  objFormatName(&(dictP[FULLNAME].key),8,"FullName");
  objFormatString(&(dictP[FULLNAME].value),0,NULL);
  objFormatName(&(dictP[FAMILYNAME].key),10,"FamilyName");
  objFormatString(&(dictP[FAMILYNAME].value),0,NULL);
  objFormatName(&(dictP[WEIGHT].key),6,"Weight");
  objFormatString(&(dictP[WEIGHT].value),0,NULL);
  objFormatName(&(dictP[ITALICANGLE].key),11,"ItalicAngle");
  objFormatReal(&(dictP[ITALICANGLE].value),0.0);
  objFormatName(&(dictP[ISFIXEDPITCH].key),12,"isFixedPitch");
  objFormatBoolean(&(dictP[ISFIXEDPITCH].value),FALSE);
  objFormatName(&(dictP[UNDERLINEPOSITION].key),17,"UnderlinePosition");
  objFormatReal(&(dictP[UNDERLINEPOSITION].value),0.0);
  objFormatName(&(dictP[UNDERLINETHICKNESS].key),18,"UnderlineThickness");
  objFormatReal(&(dictP[UNDERLINETHICKNESS].value),0.0);
  return(SCAN_OK);
}
/***================================================================***/
/*
 *   BuildPrivate Dictionary
 */
/* "LenIV" corrected to be "lenIV", otherwise fonts with some specific
   lenIV value could not be decrypted. (RMz, Author of t1lib, 06/03/1998)*/
/***================================================================***/
static int BuildPrivate(fontP)
    psfont *fontP;
{
  psdict *Private;
 
  /* allocate the private dictionary */
  Private = (psdict *)vm_alloc(20*sizeof(psdict));
 
  if (!(Private)) return(SCAN_OUT_OF_MEMORY);
 
  fontP->Private = Private;
  fontP->Private[0].key.len = 16;  /* number of actual entries */
 
  objFormatName(&(Private[BLUEVALUES].key),10,"BlueValues");
  objFormatArray(&(Private[BLUEVALUES].value),0,NULL);
  objFormatName(&(Private[OTHERBLUES].key),10,"OtherBlues");
  objFormatArray(&(Private[OTHERBLUES].value),0,NULL);
  objFormatName(&(Private[FAMILYBLUES].key),11,"FamilyBlues");
  objFormatArray(&(Private[FAMILYBLUES].value),0,NULL);
  objFormatName(&(Private[FAMILYOTHERBLUES].key),16,"FamilyOtherBlues");
  objFormatArray(&(Private[FAMILYOTHERBLUES].value),0,NULL);
  objFormatName(&(Private[BLUESCALE].key),9,"BlueScale");
  objFormatReal(&(Private[BLUESCALE].value),DEFAULTBLUESCALE);
  objFormatName(&(Private[BLUESHIFT].key),9,"BlueShift");
  objFormatInteger(&(Private[BLUESHIFT].value),DEFAULTBLUESHIFT);
  objFormatName(&(Private[BLUEFUZZ].key),8,"BlueFuzz");
  objFormatInteger(&(Private[BLUEFUZZ].value),DEFAULTBLUEFUZZ);
  objFormatName(&(Private[STDHW].key),5,"StdHW");
  objFormatArray(&(Private[STDHW].value),0,NULL);
  objFormatName(&(Private[STDVW].key),5,"StdVW");
  objFormatArray(&(Private[STDVW].value),0,NULL);
  objFormatName(&(Private[STEMSNAPH].key),9,"StemSnapH");
  objFormatArray(&(Private[STEMSNAPH].value),0,NULL);
  objFormatName(&(Private[STEMSNAPV].key),9,"StemSnapV");
  objFormatArray(&(Private[STEMSNAPV].value),0,NULL);
  objFormatName(&(Private[FORCEBOLD].key),9,"ForceBold");
  objFormatBoolean(&(Private[FORCEBOLD].value),DEFAULTFORCEBOLD);
  objFormatName(&(Private[LANGUAGEGROUP].key),13,"LanguageGroup");
  objFormatInteger(&(Private[LANGUAGEGROUP].value),DEFAULTLANGUAGEGROUP);
  objFormatName(&(Private[LENIV].key),5,"lenIV"); 
  objFormatInteger(&(Private[LENIV].value),DEFAULTLENIV);
  objFormatName(&(Private[RNDSTEMUP].key),9,"RndStemUp");
  objFormatBoolean(&(Private[RNDSTEMUP].value),DEFAULTRNDSTEMUP);
  objFormatName(&(Private[EXPANSIONFACTOR].key),9,"ExpansionFactor");
  objFormatReal(&(Private[EXPANSIONFACTOR].value),
                          DEFAULTEXPANSIONFACTOR);
  return(SCAN_OK);
}
/***================================================================***/
/**********************************************************************/
/*     GetType1Blues(fontP)                                           */
/*                                                                    */
/*   Routine to support font-level hints.                             */
/*                                                                    */
/*         Gets all the Blues information from the Private dictionary */
/*         for the font.                                              */
/*                                                                    */
/*                                                                    */
/**********************************************************************/
static int GetType1Blues(fontP)
    psfont *fontP;
{
  psdict *PrivateDictP;   /* the Private dict relating to hints */
  struct blues_struct *blues;  /* ptr for the blues struct we will allocate */
  int i;
  psobj *HintEntryP;
 
 
 
  /* get the Private dictionary pointer */
  PrivateDictP = fontP->Private;
 
  /* allocate the memory for the blues structure */
  blues = (struct blues_struct *) vm_alloc(sizeof(struct blues_struct));
 
  if (!blues)  return(SCAN_OUT_OF_MEMORY);
 
  /* Make fontP's blues ptr point to this newly allocated structure. */
  fontP->BluesP = blues;
 
  /* fill in the BlueValues array */
  HintEntryP = &(PrivateDictP[BLUEVALUES].value);
  /* check to see if the entry exists and if it's an array */
  if ( !objPIsArray(HintEntryP) || (HintEntryP->len == 0 ))
      blues->numBlueValues = 0;
  else {
      /* get the number of values in the array */
      if (HintEntryP->len > NUMBLUEVALUES) {
          blues->numBlueValues = NUMBLUEVALUES;
      } else
          blues->numBlueValues = HintEntryP->len;
      for (i = 0; i<= blues->numBlueValues-1; ++i) {
          if (objPIsInteger(&HintEntryP->data.arrayP[i]))
              blues->BlueValues[i] =
                  HintEntryP->data.arrayP[i].data.integer;
          else if (objPIsReal(&HintEntryP->data.arrayP[i]))
              blues->BlueValues[i] =
                  HintEntryP->data.arrayP[i].data.real;
          else
              blues->BlueValues[i] = 0;
      }
  }
 
  /* fill in the OtherBlues array */
  HintEntryP =  &(PrivateDictP[OTHERBLUES].value);
  /* check to see if the entry exists and if it's an array */
  if ( !objPIsArray(HintEntryP) || (HintEntryP->len == 0 ))
      blues->numOtherBlues = 0;
  else {
      /* get the number of values in the array */
      if (HintEntryP->len > NUMOTHERBLUES) {
          blues->numOtherBlues = NUMOTHERBLUES;
      } else
          blues->numOtherBlues = HintEntryP->len;
      for (i = 0; i<= blues->numOtherBlues-1; ++i) {
          if (objPIsInteger(&HintEntryP->data.arrayP[i]))
              blues->OtherBlues[i] =
                  HintEntryP->data.arrayP[i].data.integer;
          else if (objPIsReal(&HintEntryP->data.arrayP[i]))
              blues->OtherBlues[i] =
                  HintEntryP->data.arrayP[i].data.real;
          else
              blues->OtherBlues[i] = 0;
      }
  }
 
  /* fill in the FamilyBlues array */
  HintEntryP =  &(PrivateDictP[FAMILYBLUES].value);
  /* check to see if the entry exists and if it's an array */
  if ( !objPIsArray(HintEntryP) || (HintEntryP->len == 0 ))
      blues->numFamilyBlues = 0;
  else {
      /* get the number of values in the array */
      if (HintEntryP->len > NUMFAMILYBLUES) {
          blues->numFamilyBlues = NUMFAMILYBLUES;
      } else
          blues->numFamilyBlues = HintEntryP->len;
      for (i = 0; i<= blues->numFamilyBlues-1; ++i) {
          if (objPIsInteger(&HintEntryP->data.arrayP[i]))
              blues->FamilyBlues[i] =
                  HintEntryP->data.arrayP[i].data.integer;
          else if (objPIsReal(&HintEntryP->data.arrayP[i]))
              blues->FamilyBlues[i] =
                  HintEntryP->data.arrayP[i].data.real;
          else
              blues->FamilyBlues[i] = 0;
      }
  }
 
  /* fill in the FamilyOtherBlues array */
  HintEntryP =  &(PrivateDictP[FAMILYOTHERBLUES].value);
  /* check to see if the entry exists and if it's an array */
  if ( !objPIsArray(HintEntryP) || (HintEntryP->len == 0 ))
      blues->numFamilyOtherBlues = 0;
  else {
      /* get the number of values in the array */
      if (HintEntryP->len > NUMFAMILYOTHERBLUES) {
          blues->numFamilyOtherBlues = NUMFAMILYOTHERBLUES;
      } else
          blues->numFamilyOtherBlues = HintEntryP->len;
      for (i = 0; i<= blues->numFamilyOtherBlues-1; ++i) {
          if (objPIsInteger(&HintEntryP->data.arrayP[i]))
              blues->FamilyOtherBlues[i] =
                  HintEntryP->data.arrayP[i].data.integer;
          else if (objPIsReal(&HintEntryP->data.arrayP[i]))
              blues->FamilyOtherBlues[i] =
                  HintEntryP->data.arrayP[i].data.real;
          else
              blues->FamilyOtherBlues[i] = 0;
      }
  }
 
  /* fill in the StemSnapH array */
  HintEntryP =  &(PrivateDictP[STEMSNAPH].value);
  /* check to see if the entry exists and if it's an array */
  if ( !objPIsArray(HintEntryP) || (HintEntryP->len == 0 ))
      blues->numStemSnapH = 0;
  else {
      /* get the number of values in the array */
      if (HintEntryP->len > NUMSTEMSNAPH) {
          blues->numStemSnapH = NUMSTEMSNAPH;
      } else
          blues->numStemSnapH = HintEntryP->len;
      for (i = 0; i<= blues->numStemSnapH-1; ++i) {
          if (objPIsInteger(&HintEntryP->data.arrayP[i]))
              blues->StemSnapH[i] =
                  HintEntryP->data.arrayP[i].data.integer;
          else if (objPIsReal(&HintEntryP->data.arrayP[i]))
              blues->StemSnapH[i] =
                  HintEntryP->data.arrayP[i].data.real;
          else
              blues->StemSnapH[i] = 0;
      }
  }
 
  /* fill in the StemSnapV array */
  HintEntryP =  &(PrivateDictP[STEMSNAPV].value);
  /* check to see if the entry exists and if it's an array */
  if ( !objPIsArray(HintEntryP) || (HintEntryP->len == 0 ))
      blues->numStemSnapV = 0;
  else {
      /* get the number of values in the array */
      if (HintEntryP->len > NUMSTEMSNAPV) {
          blues->numStemSnapV = NUMSTEMSNAPV;
      } else
          blues->numStemSnapV = HintEntryP->len;
      for (i = 0; i<= blues->numStemSnapV-1; ++i) {
          if (objPIsInteger(&HintEntryP->data.arrayP[i]))
              blues->StemSnapV[i] =
                  HintEntryP->data.arrayP[i].data.integer;
          else if (objPIsReal(&HintEntryP->data.arrayP[i]))
              blues->StemSnapV[i] =
                  HintEntryP->data.arrayP[i].data.real;
          else
              blues->StemSnapV[i] = 0;
      }
  }
 
  /* fill in the StdVW array */
  HintEntryP =  &(PrivateDictP[STDVW].value);
  /* check to see if the entry exists and if it's an array */
  if ( !objPIsArray(HintEntryP) || (HintEntryP->len == 0 ))
      /* a value of zero signifies no entry */
      blues->StdVW = 0.0;
  else {
      if (HintEntryP->len > NUMSTDVW) {
      }
      if (objPIsInteger(&HintEntryP->data.arrayP[0]))
          blues->StdVW = HintEntryP->data.arrayP[0].data.integer;
      else if (objPIsReal(&HintEntryP->data.arrayP[0]))
          blues->StdVW = HintEntryP->data.arrayP[0].data.real;
      else
          blues->StdVW = 0.0;
  }
 
  /* fill in the StdHW array */
  HintEntryP =  &(PrivateDictP[STDHW].value);
  /* check to see if the entry exists and if it's an array */
  if ( !objPIsArray(HintEntryP) || (HintEntryP->len == 0 ))
      /* a value of zero signifies no entry */
      blues->StdHW = 0;
  else {
      if (HintEntryP->len > NUMSTDHW) {
      }
          if (objPIsInteger(&HintEntryP->data.arrayP[0]))
             blues->StdHW = HintEntryP->data.arrayP[0].data.integer;
          else if (objPIsReal(&HintEntryP->data.arrayP[0]))
             blues->StdHW = HintEntryP->data.arrayP[0].data.real;
          else
             blues->StdHW = 0;
  }
 
 
  /* get the ptr to the BlueScale entry */
  HintEntryP =  &(PrivateDictP[BLUESCALE].value);
  /* put the BlueScale in the blues structure */
  if (objPIsInteger(HintEntryP)) /* Must be integer! */
      blues->BlueScale = HintEntryP->data.integer;
  else if (objPIsReal(HintEntryP)) /* Error? */
      blues->BlueScale = HintEntryP->data.real;
  else
      blues->BlueScale = DEFAULTBLUESCALE;
 
  /* get the ptr to the BlueShift entry */
  HintEntryP =  &(PrivateDictP[BLUESHIFT].value);
  if (objPIsInteger(HintEntryP)) /* Must be integer! */
      blues->BlueShift = HintEntryP->data.integer;
  else if (objPIsReal(HintEntryP)) /* Error? */
      blues->BlueShift = HintEntryP->data.real;
  else
      blues->BlueShift = DEFAULTBLUESHIFT;
 
  /* get the ptr to the BlueFuzz entry */
  HintEntryP =  &(PrivateDictP[BLUEFUZZ].value);
  if (objPIsInteger(HintEntryP)) /* Must be integer! */
      blues->BlueFuzz = HintEntryP->data.integer;
  else if (objPIsReal(HintEntryP)) /* Error? */
      blues->BlueFuzz = HintEntryP->data.real;
  else
      blues->BlueFuzz = DEFAULTBLUEFUZZ;
 
  /* get the ptr to the ForceBold entry */
  HintEntryP =  &(PrivateDictP[FORCEBOLD].value);
  if (objPIsBoolean(HintEntryP))  /* Must be integer! */
      blues->ForceBold = HintEntryP->data.boolean;
  else
      blues->ForceBold = DEFAULTFORCEBOLD;
 
  /* get the ptr to the LanguageGroup entry */
  HintEntryP =  &(PrivateDictP[LANGUAGEGROUP].value);
  if (objPIsInteger(HintEntryP)) /* Must be integer! */
      blues->LanguageGroup = HintEntryP->data.integer;
  else
      blues->LanguageGroup = DEFAULTLANGUAGEGROUP;
 
  /* get the ptr to the RndStemUp entry */
  HintEntryP =  &(PrivateDictP[RNDSTEMUP].value);
  if (objPIsBoolean(HintEntryP)) /* Must be integer! */
      blues->RndStemUp = HintEntryP->data.boolean;
  else
      blues->RndStemUp = DEFAULTRNDSTEMUP;
 
  /* get the ptr to the lenIV entry */
  HintEntryP =  &(PrivateDictP[LENIV].value);
  if (objPIsInteger(HintEntryP)) {/* Must be integer! */
    blues->lenIV = HintEntryP->data.integer;
  }
  else{
    blues->lenIV = DEFAULTLENIV;
  }
  
 
  /* get the ptr to the ExpansionFactor entry */
  HintEntryP =  &(PrivateDictP[EXPANSIONFACTOR].value);
  if (objPIsInteger(HintEntryP))
      blues->ExpansionFactor = HintEntryP->data.integer;
  else if (objPIsReal(HintEntryP))
      blues->ExpansionFactor = HintEntryP->data.real;
  else
      blues->ExpansionFactor = DEFAULTEXPANSIONFACTOR;
  return(SCAN_OK);
}
/**********************************************************************/
/*   GetType1CharString(fontP,code)                                   */
/*                                                                    */
/*          Look up code in the standard encoding vector and return   */
/*          the charstring associated with the character name.        */
/*                                                                    */
/*   fontP  is the psfont structure.                                  */
/*                                                                    */
/*   Returns a psobj (string)                                         */
/**********************************************************************/
psobj *GetType1CharString(fontP, code)
psfont *fontP;
unsigned char code;
{
  int  N;           /* the 'Nth' entry in the CharStrings       */
  psobj *charnameP; /* points to psobj that is name of character*/
 
  psdict *CharStringsDictP; /* dictionary with char strings     */
  psobj  *theStringP;  /* the definition for the code */
  
  
  if (StdEncArrayP == NULL) {
    return(NULL);
  }
  /* use the code to index into the standard encoding vector  */
  charnameP = &(StdEncArrayP[code]);
  
  /* test if the encoding array points to a name */
  if (!(objPIsName(charnameP)) ) {
    return(NULL);
  }

  /* Now that we have the character name out of the standardencoding */
  /* get the character definition out of the current font */
  CharStringsDictP =  fontP->CharStringsP;
 
  /* search the chars string for this charname as key */
  N = SearchDictName(CharStringsDictP,charnameP);
  if (N<=0) {
    return(NULL);
  }

  /* OK, the nth item is the psobj that is the string for this char */
  theStringP = &(CharStringsDictP[N].value);
 
  return(theStringP);
}
 
/***================================================================***/
/*
 *   FindDictValue
 */
/***================================================================***/
 
static int FindDictValue(dictP)
    psdict    *dictP;
{
   psobj LitName;
   int   N;
   int   V;
 
   /* we have just scanned a token and it is a literal name */
   /* need to check if that name is in Private dictionary */
   objFormatName(&LitName,tokenLength,tokenStartP);
   /* is it in the dictP */
   N = SearchDictName(dictP,&LitName);
   /* if found */
   if ( N > 0 ) {
     /* what type */
     switch (dictP[N].value.type) {
       case OBJ_ENCODING:
         V = getEncoding(&(dictP[N].value));
         if ( V != SCAN_OK ) return(V);
         break;
       case OBJ_ARRAY:
         V = getArray(&(dictP[N].value));
         if ( V != SCAN_OK ) return(V);
         break;
       case OBJ_INTEGER:
         /* next value in integer */
         dictP[N].value.data.integer = getInt();
         if (rc) return(rc);  /* if next token was not an Int */
         break;
       case OBJ_REAL:
         /* next value must be real or int, store as a real */
         scan_token(inputP);
         if (tokenType == TOKEN_REAL) {
           dictP[N].value.data.real = tokenValue.real;
         }
         else
           if (tokenType == TOKEN_INTEGER) {
             dictP[N].value.data.real = tokenValue.integer;
           }
         else return(SCAN_ERROR);
         break;
       case OBJ_NAME:
         V = getNextValue(TOKEN_LITERAL_NAME);
         if ( V != SCAN_OK ) return(V);
         if (!(vm_alloc(tokenLength)) ) return(SCAN_OUT_OF_MEMORY);
         objFormatName(&(dictP[N].value),tokenLength,tokenStartP);
         break;
       case OBJ_STRING:
         V = getNextValue(TOKEN_STRING);
         if ( V != SCAN_OK ) return(V);
         if (!(vm_alloc(tokenLength)) ) return(SCAN_OUT_OF_MEMORY);
         objFormatString(&(dictP[N].value),tokenLength,tokenStartP);
         break;
       case OBJ_BOOLEAN:
         scan_token(inputP);
         if (tokenType != TOKEN_NAME) {
           return(SCAN_ERROR);
         }
         if (0 == strncmp(tokenStartP,"true",4) ) {
           dictP[N].value.data.boolean =TRUE;
         }
         else
           if (0 == strncmp(tokenStartP,"false",5) ) {
             dictP[N].value.data.boolean =FALSE;
           }
           else return(SCAN_ERROR);
         break;
 
       default:
         return(SCAN_ERROR);
         break;
     }
   }
   /* Name is not in dictionary.  That is ok. */
   return(SCAN_OK);
 
}
/***================================================================***/
 
/*
 * -------------------------------------------------------------------
 *  Scan the next token and convert it into an object
 *  Result is placed on the Operand Stack as next object
 * -------------------------------------------------------------------
 */
int scan_font(FontP)
  psfont *FontP;
{
 
 
  char   filename[128];
  char   filetype[3];
  FILE   *fileP;
  char   *nameP;
  int    namelen;
 
    filetype[0] = 'r';
    filetype[1] = 'b';
    filetype[2] = '\0';
    /* copy the filename and remove leading or trailing blanks */
    /* point to name and search for leading blanks */
    nameP= FontP->FontFileName.data.nameP;
    namelen  = FontP->FontFileName.len;
    while (nameP[0] == ' ') {
        nameP++;
        namelen--;
    }
    /* now remove any trailing blanks */
    while ((namelen>0) && ( nameP[namelen-1] == ' ')) {
      namelen--;
    }
    strncpy(filename,nameP,namelen);
    filename[namelen] = '\0';
    /* file name is now constructed */
    inputFile.data.fileP = NULL;
    filterFile.data.fileP = NULL;
 
    inputP = &inputFile;
    if ((fileP = fopen(filename,filetype))!=NULL) {
      objFormatFile(inputP,fileP);
    }
    else {
      return(SCAN_FILE_OPEN_ERROR);
    };
 
  WantFontInfo  = TRUE;
  InPrivateDict = FALSE;
  TwoSubrs      = FALSE;
  rc = BuildFontInfo(FontP);
  if (rc != 0) return(rc);
 
  /* Assume everything will be OK */
  rc       = 0;
 
  /* Loop until complete font is read  */
  do {
    /* Scan the next token */
    scan_token(inputP);
    
    /* ==> tokenLength, tokenTooLong, tokenType, and tokenValue are */
    /* now set */
 
    switch (tokenType) {
      case TOKEN_EOF:
      case TOKEN_NONE:
      case TOKEN_INVALID:
        /* in this case we are done */
        if (tokenTooLong) return(SCAN_OUT_OF_MEMORY);
        rc = SCAN_ERROR;
        break;
      case TOKEN_LITERAL_NAME:
            /* Look up the name */
            tokenStartP[tokenLength] = '\0';
	    /* At this point we check for the font not being a
	       Multiple Master Font. If it is, we return an error.
	       (RMz, 01/29/1999) */
	    if (strncmp(tokenStartP, "BlendAxisTypes", 14)==0){
	      rc=SCAN_MMFONT;
	      break;
	    }
            if (InPrivateDict ) {
              if (0== strncmp(tokenStartP,"Subrs",5) ) {
                rc = BuildSubrs(FontP);
                break;
              }
              if (0== strncmp(tokenStartP,"CharStrings",11) ) {
                rc = BuildCharStrings(FontP);
                if ( (rc == SCAN_OK) ||(rc == SCAN_END) ) {
                  fclose(inputP->data.fileP);
                  /* Build the Blues Structure */
		  rc = GetType1Blues(FontP);
                  /* whatever the return code, return it */
                  /* all the work is done. This is the normal exit.*/
                  return(rc);
                }
                break;
              }
              rc = FindDictValue(FontP->Private);
              /* we are not going to report errors */
              /* Sometimes the font file may test a value such as */
              /* testing to see if the font is alreadly loaded with */
              /* same UniqueID.  We would faile on /UniqueID get  */
              /* because we are expecting a int to follow UniqueID*/
              /* If the correct object type does not follow a Name*/
              /* then we will skip over it without reporting error*/
              rc = SCAN_OK;
              break;
            }   /* end of reading Private dictionary */
            else
              if (0== strncmp(tokenStartP,"Private",7) ) {
                InPrivateDict = TRUE;
                rc = BuildPrivate(FontP);
                break;
              }
              else
                if (WantFontInfo) {
                  rc = FindDictValue(FontP->fontInfoP);
                  /* we are not going to report errors */
                  rc = SCAN_OK;
                  break;
                }
        break;
      case TOKEN_NAME:
            if (0 == strncmp(tokenStartP,"eexec",5) ) {
	      /* We check for the pfb-headers in I/O-module */ 
	      filterFile.data.fileP = T1eexec(inputP->data.fileP);
	      if (filterFile.data.fileP == NULL) {
		fclose(inputFile.data.fileP);
		return(SCAN_FILE_OPEN_ERROR);
	      }
	      inputP = &filterFile;
	      
	      WantFontInfo = FALSE;
            }
        break;
    }
 
  }
  while (rc ==0);
  fclose(inputP->data.fileP);
  if (tokenTooLong) return(SCAN_OUT_OF_MEMORY);
  return(rc);
}
 
