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texmacs  1.0.7.15
Defines | Functions
type1.c File Reference
#include <string.h>
#include <math.h>
#include "system.h"
#include "mem.h"
#include "error.h"
#include "dpxfile.h"
#include "numbers.h"
#include "pdfobj.h"
#include "pdffont.h"
#include "pdfencoding.h"
#include "unicode.h"
#include "dpxutil.h"
#include "pst_obj.h"
#include "pst.h"
#include "cff_limits.h"
#include "cff_types.h"
#include "cff_dict.h"
#include "cff.h"
#include "t1_load.h"
#include "t1_char.h"
#include "type1.h"
#include "tfm.h"

Go to the source code of this file.

Defines

#define FONT_FLAG_FIXEDPITCH   (1 << 0) /* Fixed-width font */
#define FONT_FLAG_SERIF   (1 << 1) /* Serif font */
#define FONT_FLAG_SYMBOLIC   (1 << 2) /* Symbolic font */
#define FONT_FLAG_SCRIPT   (1 << 3) /* Script font */
#define FONT_FLAG_STANDARD   (1 << 5) /* Adobe Standard Character Set */
#define FONT_FLAG_ITALIC   (1 << 6) /* Italic */
#define FONT_FLAG_ALLCAP   (1 << 16) /* All-cap font */
#define FONT_FLAG_SMALLCAP   (1 << 17) /* Small-cap font */
#define FONT_FLAG_FORCEBOLD   (1 << 18) /* Force bold at small text sizes */
#define WBUF_SIZE   1024
#define MAX_GLYPHS   1024

Functions

static int is_basefont (const char *name)
int pdf_font_open_type1 (pdf_font *font)
static void get_font_attr (pdf_font *font, cff_font *cffont)
static void add_metrics (pdf_font *font, cff_font *cffont, char **enc_vec, double *widths, long num_glyphs)
static long write_fontfile (pdf_font *font, cff_font *cffont, long num_glyphs)
int pdf_font_load_type1 (pdf_font *font)

Define Documentation

#define FONT_FLAG_ALLCAP   (1 << 16) /* All-cap font */

Definition at line 69 of file type1.c.

#define FONT_FLAG_FIXEDPITCH   (1 << 0) /* Fixed-width font */

Definition at line 63 of file type1.c.

#define FONT_FLAG_FORCEBOLD   (1 << 18) /* Force bold at small text sizes */

Definition at line 71 of file type1.c.

#define FONT_FLAG_ITALIC   (1 << 6) /* Italic */

Definition at line 68 of file type1.c.

#define FONT_FLAG_SCRIPT   (1 << 3) /* Script font */

Definition at line 66 of file type1.c.

#define FONT_FLAG_SERIF   (1 << 1) /* Serif font */

Definition at line 64 of file type1.c.

#define FONT_FLAG_SMALLCAP   (1 << 17) /* Small-cap font */

Definition at line 70 of file type1.c.

#define FONT_FLAG_STANDARD   (1 << 5) /* Adobe Standard Character Set */

Definition at line 67 of file type1.c.

#define FONT_FLAG_SYMBOLIC   (1 << 2) /* Symbolic font */

Definition at line 65 of file type1.c.

#define MAX_GLYPHS   1024
#define WBUF_SIZE   1024

Function Documentation

static void add_metrics ( pdf_font font,
cff_font cffont,
char **  enc_vec,
double *  widths,
long  num_glyphs 
) [static]

Definition at line 285 of file type1.c.

{
  pdf_obj *fontdict, *descriptor;
  pdf_obj *tmp_array;
  int      code, firstchar, lastchar;
  double   val;
  int      i, tfm_id;
  char    *usedchars;
  double   scaling;

  fontdict   = pdf_font_get_resource  (font);
  descriptor = pdf_font_get_descriptor(font);
  usedchars  = pdf_font_get_usedchars (font);

  /*
   * The original FontBBox of the font is preserved, instead
   * of replacing it with tight bounding box calculated from
   * charstrings, to prevent Acrobat 4 from greeking text as
   * much as possible.
   */
  if (!cff_dict_known(cffont->topdict, "FontBBox")) {
    ERROR("No FontBBox?");
  }

  /* The widhts array in the font dictionary must be given relative
   * to the default scaling of 1000:1, not relative to the scaling
   * given by the font matrix.
   */
  if (cff_dict_known(cffont->topdict, "FontMatrix"))
    scaling = 1000*cff_dict_get(cffont->topdict, "FontMatrix", 0);
  else
    scaling = 1;

  tmp_array = pdf_new_array();
  for (i = 0; i < 4; i++) {
    val = cff_dict_get(cffont->topdict, "FontBBox", i);
    pdf_add_array(tmp_array, pdf_new_number(ROUND(val, 1.0)));
  }
  pdf_add_dict(descriptor, pdf_new_name("FontBBox"), tmp_array);

  tmp_array = pdf_new_array();
  if (num_glyphs <= 1) { /* This must be an error. */
    firstchar = lastchar = 0;
    pdf_add_array(tmp_array, pdf_new_number(0.0));
  } else {
    for (firstchar = 255, lastchar = 0, code = 0; code < 256; code++) {
      if (usedchars[code]) {
       if (code < firstchar) firstchar = code;
       if (code > lastchar)  lastchar  = code;
      }
    }
    if (firstchar > lastchar) {
      WARN("No glyphs actually used???");
      pdf_release_obj(tmp_array);
      return;
    }
    { 
      char *tfmfile = pdf_font_get_tfmfile(font);
      if (tfmfile) 
        tfm_id = tfm_open(tfmfile, 0); 
      else 
        tfm_id = tfm_open(pdf_font_get_mapname(font), 0);       
    }
    for (code = firstchar; code <= lastchar; code++) {
      if (usedchars[code]) {
        double width;
        if (tfm_id < 0) /* tfm is not found */
         width = scaling * widths[cff_glyph_lookup(cffont, enc_vec[code])];
        else
          width = 1000. * tfm_get_width(tfm_id, code);
       pdf_add_array(tmp_array,
                    pdf_new_number(ROUND(width, 0.1)));
      } else {
       pdf_add_array(tmp_array, pdf_new_number(0.0));
      }
    }
  }

  if (pdf_array_length(tmp_array) > 0) {
    pdf_add_dict(fontdict,
               pdf_new_name("Widths"),  pdf_ref_obj(tmp_array));
  }
  pdf_release_obj(tmp_array);

  pdf_add_dict(fontdict,
              pdf_new_name("FirstChar"), pdf_new_number(firstchar));
  pdf_add_dict(fontdict,
              pdf_new_name("LastChar"),  pdf_new_number(lastchar));

  return;
}

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static void get_font_attr ( pdf_font font,
cff_font cffont 
) [static]

Definition at line 140 of file type1.c.

{
  char    *fontname;
  pdf_obj *descriptor;
  double   capheight, ascent, descent;
  double   italicangle, stemv;
  double   defaultwidth, nominalwidth;
  long     flags = 0, gid, i;
  static const char *L_c[] = {
    "H", "P", "Pi", "Rho", NULL
  };
  static const char *L_d[] = {
    "p", "q", "mu", "eta", NULL
  };
  static const char *L_a[] = {
    "b", "h", "lambda", NULL
  };
  t1_ginfo gm;

  defaultwidth = 500.0;
  nominalwidth = 0.0;

  /*
   * CapHeight, Ascent, and Descent is meaningfull only for Latin/Greek/Cyrillic.
   * The BlueValues and OtherBlues also have those information.
   */
  if (cff_dict_known(cffont->topdict, "FontBBox")) {
    /* Default values */
    capheight = ascent = cff_dict_get(cffont->topdict, "FontBBox", 3);
    descent = cff_dict_get(cffont->topdict, "FontBBox", 1);
  } else {
    capheight =  680.0;
    ascent    =  690.0;
    descent   = -190.0;
  }
  if (cff_dict_known(cffont->private[0], "StdVW")) {
    stemv = cff_dict_get(cffont->private[0], "StdVW", 0);
  } else {
    /*
     * We may use the following values for StemV:
     *  Thin - ExtraLight: <= 50
     *  Light: 71
     *  Regular(Normal): 88
     *  Medium: 109
     *  SemiBold(DemiBold): 135
     *  Bold - Heavy: >= 166
     */
    stemv = 88.0;
  }
  if (cff_dict_known(cffont->topdict, "ItalicAngle")) {
    italicangle = cff_dict_get(cffont->topdict, "ItalicAngle", 0);
    if (italicangle != 0.0)
      flags |= FONT_FLAG_ITALIC;
  } else {
    italicangle = 0.0;
  }

  /*
   * Use "space", "H", "p", and "b" for various values.
   * Those characters should not "seac". (no accent)
   */
  gid = cff_glyph_lookup(cffont, "space");
  if (gid >= 0 && gid < cffont->cstrings->count) {
    t1char_get_metrics(cffont->cstrings->data + cffont->cstrings->offset[gid] - 1,
                     cffont->cstrings->offset[gid+1] - cffont->cstrings->offset[gid],
                     cffont->subrs[0], &gm);
    defaultwidth = gm.wx;
  }

  for (i = 0; L_c[i] != NULL; i++) {
    gid = cff_glyph_lookup(cffont, L_c[i]);
    if (gid >= 0 && gid < cffont->cstrings->count) {
      t1char_get_metrics(cffont->cstrings->data + cffont->cstrings->offset[gid] - 1,
                    cffont->cstrings->offset[gid+1] - cffont->cstrings->offset[gid],
                    cffont->subrs[0], &gm);
      capheight = gm.bbox.ury;
      break;
    }
  }

  for (i = 0; L_d[i] != NULL; i++) {
    gid = cff_glyph_lookup(cffont, L_d[i]);
    if (gid >= 0 && gid < cffont->cstrings->count) {
      t1char_get_metrics(cffont->cstrings->data + cffont->cstrings->offset[gid] - 1,
                      cffont->cstrings->offset[gid+1] - cffont->cstrings->offset[gid],
                      cffont->subrs[0], &gm);
      descent = gm.bbox.lly;
      break;
    }
  }

  for (i = 0; L_a[i] != NULL; i++) {
    gid = cff_glyph_lookup(cffont, L_a[i]);
    if (gid >= 0 && gid < cffont->cstrings->count) {
      t1char_get_metrics(cffont->cstrings->data + cffont->cstrings->offset[gid] - 1,
                      cffont->cstrings->offset[gid+1] - cffont->cstrings->offset[gid],
                      cffont->subrs[0], &gm);
      ascent = gm.bbox.ury;
      break;
    }
  }

  if (defaultwidth != 0.0) {
    cff_dict_add(cffont->private[0], "defaultWidthX", 1);
    cff_dict_set(cffont->private[0], "defaultWidthX", 0, defaultwidth);
  }
  if (nominalwidth != 0.0) {
    cff_dict_add(cffont->private[0], "nominalWidthX", 1);
    cff_dict_set(cffont->private[0], "nominalWidthX", 0, nominalwidth);
  }
  if (cff_dict_known(cffont->private[0], "ForceBold") &&
      cff_dict_get(cffont->private[0], "ForceBold", 0)) {
    flags |= FONT_FLAG_FORCEBOLD;
  }
  if (cff_dict_known(cffont->private[0], "IsFixedPitch") &&
      cff_dict_get(cffont->private[0], "IsFixedPitch", 0)) {
    flags |= FONT_FLAG_FIXEDPITCH;
  }

  fontname   = pdf_font_get_fontname  (font);
  descriptor = pdf_font_get_descriptor(font);

  if (fontname && !strstr(fontname, "Sans")) {
    flags |= FONT_FLAG_SERIF;
  }
  if (fontname &&  strstr(fontname, "Caps")) {
    flags |= FONT_FLAG_SMALLCAP;
  }
  flags |= FONT_FLAG_SYMBOLIC; /* FIXME */

  pdf_add_dict(descriptor,
              pdf_new_name("CapHeight"), pdf_new_number(capheight));
  pdf_add_dict(descriptor,
              pdf_new_name("Ascent"), pdf_new_number(ascent));
  pdf_add_dict(descriptor,
              pdf_new_name("Descent"), pdf_new_number(descent));
  pdf_add_dict(descriptor,
              pdf_new_name("ItalicAngle"), pdf_new_number(italicangle));
  pdf_add_dict(descriptor,
              pdf_new_name("StemV"), pdf_new_number(stemv));
  pdf_add_dict(descriptor,
              pdf_new_name("Flags"), pdf_new_number(flags));
}

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static int is_basefont ( const char *  name) [static]

Definition at line 74 of file type1.c.

{
  static const char *basefonts[] = {
    "Courier",                  "Courier-Bold",          "Courier-Oblique",
    "Courier-BoldOblique",      "Helvetica",             "Helvetica-Bold",
    "Helvetica-Oblique",        "Helvetica-BoldOblique", "Symbol",
    "Times-Roman",              "Times-Bold",            "Times-Italic",
    "Times-BoldItalic",         "ZapfDingbats"
  };
  int i;

  for (i = 0; i < 14; i++) {
    if (!strcmp(name, basefonts[i]))
      return 1;
  }

  return 0;
}

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int pdf_font_load_type1 ( pdf_font font)

Definition at line 498 of file type1.c.

{
  pdf_obj      *fontdict, *descriptor;
  int           encoding_id;
  char         *usedchars, *ident;
  char         *fontname, *uniqueTag, *fontfile;
  char         *fullname; /* With pseudo unique tag */
  cff_font     *cffont;
  cff_charsets *charset;
  char        **enc_vec;
  double        defaultwidth, nominalwidth;
  double       *widths;
  card16       *GIDMap, num_glyphs = 0;
  FILE         *fp;
  long          offset;
  int           code, verbose;

  ASSERT(font);

  if (!pdf_font_is_in_use(font)) {
    return 0;
  }

  verbose     = pdf_font_get_verbose();

  encoding_id = pdf_font_get_encoding  (font);
  fontdict    = pdf_font_get_resource  (font);

  descriptor  = pdf_font_get_descriptor(font);
  usedchars   = pdf_font_get_usedchars (font);
  ident       = pdf_font_get_ident     (font);
  fontname    = pdf_font_get_fontname  (font);
  fontfile    = pdf_font_get_fontfile  (font);
  uniqueTag   = pdf_font_get_uniqueTag (font);
  if (!usedchars || !ident || !fontname) {
    ERROR("Type1: Unexpected error.");
  }

  
  if (fontfile)
    fp = MFOPEN(fontfile, FOPEN_RBIN_MODE);
  else
    fp = DPXFOPEN(ident, DPX_RES_TYPE_T1FONT);
  
  if (!fp) {
    ERROR("Type1: Could not open Type1 font: %s", ident);
  }

  GIDMap     = NULL;
  num_glyphs = 0;

  if (encoding_id >= 0) {
    enc_vec = NULL;
  } else {
    enc_vec = NEW(256, char *);
    for (code = 0; code <= 0xff; code++) {
      enc_vec[code] = NULL;
    }
  }

  cffont = t1_load_font(enc_vec, 0, fp);
  if (!cffont) {
    ERROR("Could not load Type 1 font: %s", ident);
  }
  DPXFCLOSE(fp);

  fullname = NEW(strlen(fontname) + 8, char);
  sprintf(fullname, "%6s+%s", uniqueTag, fontname);

  /*
   * Encoding related things.
   */
  if (encoding_id >= 0) {
    enc_vec = pdf_encoding_get_encoding(encoding_id);
  } else {
    pdf_obj *tounicode;

    /*
     * Create enc_vec and ToUnicode CMap for built-in encoding.
     */
    if (!pdf_lookup_dict(fontdict, "ToUnicode")) {
    tounicode = pdf_create_ToUnicode_CMap(fullname,
                                     enc_vec, usedchars);
    if (tounicode) {
      pdf_add_dict(fontdict,
                     pdf_new_name("ToUnicode"),
                     pdf_ref_obj (tounicode));
      pdf_release_obj(tounicode);
      }
    }
  }

  cff_set_name(cffont, fullname);
  RELEASE(fullname);

  /* defaultWidthX, CapHeight, etc. */
  get_font_attr(font, cffont);
  if (cff_dict_known(cffont->private[0], "defaultWidthX")) {
    defaultwidth = cff_dict_get(cffont->private[0], "defaultWidthX", 0);
  } else {
    defaultwidth = 0.0;
  }
  if (cff_dict_known(cffont->private[0], "nominalWidthX")) {
    nominalwidth = cff_dict_get(cffont->private[0], "nominalWidthX", 0);
  } else {
    nominalwidth = 0.0;
  }

  /* Create CFF encoding, charset, sort glyphs */
#define MAX_GLYPHS 1024
  GIDMap = NEW(MAX_GLYPHS, card16);
  {
    int     prev, duplicate;
    long    gid;
    char   *glyph;
    s_SID   sid;

    cffont->encoding = NEW(1, cff_encoding);
    cffont->encoding->format      = 1;
    cffont->encoding->num_entries = 0;
    cffont->encoding->data.range1 = NEW(256, cff_range1);
    cffont->encoding->num_supps   = 0;
    cffont->encoding->supp        = NEW(256, cff_map);

    charset = NEW(1, cff_charsets);
    charset->format      = 0;
    charset->num_entries = 0;
    charset->data.glyphs = NEW(MAX_GLYPHS, s_SID);

    gid = cff_glyph_lookup(cffont, ".notdef");
    if (gid < 0)
      ERROR("Type 1 font with no \".notdef\" glyph???");
    GIDMap[0] = (card16) gid;
    if (verbose > 2)
      MESG("[glyphs:/.notdef");
    num_glyphs =  1;
    for (prev = -2, code = 0; code <= 0xff; code++) {
      glyph = enc_vec[code];

      if (!usedchars[code])
       continue;
      if (glyph && !strcmp(glyph, ".notdef")) {
       WARN("Character mapped to .notdef used in font: %s",
            fontname);
       usedchars[code] = 0;
       continue;
      }

      gid = cff_glyph_lookup(cffont, glyph);
      if (gid < 1 || gid >= cffont->cstrings->count) {
       WARN("Glyph \"%s\" missing in font \"%s\".", glyph, fontname);
       usedchars[code] = 0;
       continue;
      }

      for (duplicate = 0; duplicate < code; duplicate++) {
       if (usedchars[duplicate] &&
           enc_vec[duplicate]   && !strcmp(enc_vec[duplicate], glyph))
         break;
      }

      sid = cff_add_string(cffont, glyph, 1); /* FIXME */
      if (duplicate < code) { /* found duplicates */
       cffont->encoding->supp[cffont->encoding->num_supps].code  = duplicate;
       cffont->encoding->supp[cffont->encoding->num_supps].glyph = sid;
       cffont->encoding->num_supps += 1;
      } else {
       GIDMap[num_glyphs] = (card16) gid;
       charset->data.glyphs[charset->num_entries] = sid;
       charset->num_entries += 1;
       if (code != prev + 1) {
         cffont->encoding->num_entries += 1;
         cffont->encoding->data.range1[cffont->encoding->num_entries-1].first  = code;
         cffont->encoding->data.range1[cffont->encoding->num_entries-1].n_left = 0;
       } else {
         cffont->encoding->data.range1[cffont->encoding->num_entries-1].n_left += 1;
       }
       prev = code;
       num_glyphs++;

       if (verbose > 2) {
         MESG("/%s", glyph);
       }

      }
    }
    if (cffont->encoding->num_supps > 0) {
      cffont->encoding->format |= 0x80;
    } else {
      RELEASE(cffont->encoding->supp); /* FIXME */
      cffont->encoding->supp = NULL;
    }
  }

  widths = NEW(cffont->cstrings->count, double);
  /*
   * No more string will be added.
   * The Type 1 seac operator may add another glyph but the glyph name of
   * those glyphs are contained in standard string. The String Index will
   * not be modified after here.
   * BUT: We cannot update the String Index yet because then we wouldn't be
   * able to find the GIDs of the base and accent characters (unless they
   * have been used already).
   */

  {
    cff_index *cstring;
    t1_ginfo   gm;
    card16     gid, gid_orig;
    long       dstlen_max, srclen;
    int        have_seac = 0;
    card8     *srcptr, *dstptr;

    offset  = dstlen_max = 0L;
    cstring = cff_new_index(cffont->cstrings->count);
    cstring->data      = NULL;
    cstring->offset[0] = 1;
    
    /* The num_glyphs increases if "seac" operators are used. */
    for (gid = 0; gid < num_glyphs; gid++) {
      if (offset + CS_STR_LEN_MAX >= dstlen_max) {
       dstlen_max += CS_STR_LEN_MAX * 2;
       cstring->data = RENEW(cstring->data, dstlen_max, card8);
      }
      gid_orig = GIDMap[gid];

      dstptr   = cstring->data + cstring->offset[gid] - 1;
      srcptr   = cffont->cstrings->data + cffont->cstrings->offset[gid_orig] - 1;
      srclen   = cffont->cstrings->offset[gid_orig + 1] - cffont->cstrings->offset[gid_orig];

      offset  += t1char_convert_charstring(dstptr, CS_STR_LEN_MAX,
                                      srcptr, srclen,
                                      cffont->subrs[0], defaultwidth, nominalwidth, &gm);
      cstring->offset[gid + 1] = offset + 1;
      if (gm.use_seac) {
       long  bchar_gid, achar_gid, i;
       char *bchar_name, *achar_name;

       /*
        * NOTE:
        *  1. seac.achar and seac.bchar must be contained in the CFF standard string.
        *  2. Those characters need not to be encoded.
        *  3. num_glyphs == charsets->num_entries + 1.
        */
       achar_name = t1_get_standard_glyph(gm.seac.achar);
       achar_gid  = cff_glyph_lookup(cffont, achar_name);
       bchar_name = t1_get_standard_glyph(gm.seac.bchar);
       bchar_gid  = cff_glyph_lookup(cffont, bchar_name);
       if (achar_gid < 0) {
         WARN("Accent char \"%s\" not found. Invalid use of \"seac\" operator.",
              achar_name);
         continue;
       }
       if (bchar_gid < 0) {
         WARN("Base char \"%s\" not found. Invalid use of \"seac\" operator.",
              bchar_name);
         continue;
       }

       for (i = 0; i < num_glyphs; i++) {
         if (GIDMap[i] == achar_gid)
           break;
       }
       if (i == num_glyphs) {
         if (verbose > 2)
           MESG("/%s", achar_name);
         GIDMap[num_glyphs++] = achar_gid;
         charset->data.glyphs[charset->num_entries] = cff_get_sid(cffont, achar_name);
         charset->num_entries += 1;
       }

       for (i = 0; i < num_glyphs; i++) {
         if (GIDMap[i] == bchar_gid)
           break;
       }
       if (i == num_glyphs) {
         if (verbose > 2)
           MESG("/%s", bchar_name);
         GIDMap[num_glyphs++] = bchar_gid;
         charset->data.glyphs[charset->num_entries] = cff_get_sid(cffont, bchar_name);
         charset->num_entries += 1;
       }
       have_seac = 1;
      }
      widths[gid] = gm.wx;
    }
    cstring->count = num_glyphs;

    cff_release_index(cffont->subrs[0]);
    cffont->subrs[0] = NULL;
    RELEASE(cffont->subrs);
    cffont->subrs    = NULL;

    cff_release_index(cffont->cstrings);
    cffont->cstrings = cstring;

    cff_release_charsets(cffont->charsets);
    cffont->charsets = charset;
  }
  if (verbose > 2)
    MESG("]");

  /* Now we can update the String Index */
  cff_dict_update  (cffont->topdict,    cffont);
  cff_dict_update  (cffont->private[0], cffont);
  cff_update_string(cffont);

  add_metrics(font, cffont, enc_vec, widths, num_glyphs);

  offset = write_fontfile(font, cffont, num_glyphs);
  if (verbose > 1)
    MESG("[%u glyphs][%ld bytes]", num_glyphs, offset);

  cff_close(cffont);

  /* Cleanup */
  if (encoding_id < 0 && enc_vec) {
    for (code = 0; code < 256; code++) {
      if (enc_vec[code])
       RELEASE(enc_vec[code]);
      enc_vec[code] = NULL;
    }
    RELEASE(enc_vec);
  }
  if (widths)
    RELEASE(widths);
  if (GIDMap)
    RELEASE(GIDMap);

  /*
   * Maybe writing Charset is recommended for subsetted font.
   */

  return 0;
}

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int pdf_font_open_type1 ( pdf_font font)

Definition at line 94 of file type1.c.

{
  char    *ident;
  FILE    *fp;
  char     fontname[PDF_NAME_LEN_MAX+1];

  ASSERT(font);

  ident = pdf_font_get_ident(font);

  if (is_basefont(ident)) {
    pdf_font_set_fontname(font, ident);
    pdf_font_set_subtype (font, PDF_FONT_FONTTYPE_TYPE1);
    pdf_font_set_flags   (font,
                       (PDF_FONT_FLAG_NOEMBED|PDF_FONT_FLAG_BASEFONT));
  } else {
    {
      char *fontfile =   pdf_font_get_fontfile  (font);

      if (fontfile) {
        fp = MFOPEN(fontfile, FOPEN_RBIN_MODE);
        if (fp && !is_pfb(fp)) {
          DPXFCLOSE(fp);
          fp = NULL;
        }
      }
      else
        fp = DPXFOPEN(ident, DPX_RES_TYPE_T1FONT);
    }
    if (!fp)
      return -1;

    memset(fontname, 0, PDF_NAME_LEN_MAX+1);
    if (!is_pfb(fp) || t1_get_fontname(fp, fontname) < 0) {
      ERROR("Failed to read Type 1 font \"%s\".", ident);
    }
    DPXFCLOSE(fp);

    pdf_font_set_fontname(font, fontname);
    pdf_font_set_subtype (font, PDF_FONT_FONTTYPE_TYPE1);
  }

  return 0;
}

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static long write_fontfile ( pdf_font font,
cff_font cffont,
long  num_glyphs 
) [static]

Definition at line 379 of file type1.c.

{
  pdf_obj   *descriptor;
  pdf_obj   *fontfile, *stream_dict;
  cff_index *topdict;
  long       private_size, stream_data_len, charstring_len;
  long       topdict_offset, offset;
#define  WBUF_SIZE 1024
  card8     *stream_data_ptr, wbuf[WBUF_SIZE];

  descriptor = pdf_font_get_descriptor(font);

  topdict = cff_new_index(1);
  /*
   * Force existence of Encoding.
   */
  if (!cff_dict_known(cffont->topdict, "CharStrings"))
    cff_dict_add(cffont->topdict, "CharStrings", 1);
  if (!cff_dict_known(cffont->topdict, "charset"))
    cff_dict_add(cffont->topdict, "charset", 1);
  if (!cff_dict_known(cffont->topdict, "Encoding"))
    cff_dict_add(cffont->topdict, "Encoding", 1);
  private_size = cff_dict_pack((cffont->private)[0], wbuf, WBUF_SIZE);
  /* Private dict is required (but may have size 0) */
  if (!cff_dict_known(cffont->topdict, "Private"))
    cff_dict_add(cffont->topdict, "Private", 2);
  topdict->offset[1] = cff_dict_pack(cffont->topdict, wbuf, WBUF_SIZE) + 1;

  /*
   * Estimate total size of fontfile.
   */
  charstring_len = cff_index_size(cffont->cstrings);

  stream_data_len = 4; /* header size */
  stream_data_len += cff_index_size(cffont->name);
  stream_data_len += cff_index_size(topdict);
  stream_data_len += cff_index_size(cffont->string);
  stream_data_len += cff_index_size(cffont->gsubr);
  /* We are using format 1 for Encoding and format 0 for charset.
   * TODO: Should implement cff_xxx_size().
   */
  stream_data_len += 2 + (cffont->encoding->num_entries)*2 + 1 + (cffont->encoding->num_supps)*3;
  stream_data_len += 1 + (cffont->charsets->num_entries)*2;
  stream_data_len += charstring_len;
  stream_data_len += private_size;

  /*
   * Now we create FontFile data.
   */
  stream_data_ptr = NEW(stream_data_len, card8);
  /*
   * Data Layout order as described in CFF spec., sec 2 "Data Layout".
   */
  offset = 0;
  /* Header */
  offset += cff_put_header(cffont,
                        stream_data_ptr + offset, stream_data_len - offset);
  /* Name */
  offset += cff_pack_index(cffont->name,
                        stream_data_ptr + offset, stream_data_len - offset);
  /* Top DICT */
  topdict_offset = offset;
  offset += cff_index_size(topdict);
  /* Strings */
  offset += cff_pack_index(cffont->string,
                        stream_data_ptr + offset, stream_data_len - offset);
  /* Global Subrs */
  offset += cff_pack_index(cffont->gsubr,
                        stream_data_ptr + offset, stream_data_len - offset);
  /* Encoding */
  /* TODO: don't write Encoding entry if the font is always used
   * with PDF Encoding information. Applies to type1c.c as well.
   */
  cff_dict_set(cffont->topdict, "Encoding", 0, offset);
  offset += cff_pack_encoding(cffont,
                           stream_data_ptr + offset, stream_data_len - offset);
  /* charset */
  cff_dict_set(cffont->topdict, "charset", 0, offset);
  offset += cff_pack_charsets(cffont,
                           stream_data_ptr + offset, stream_data_len - offset);
  /* CharStrings */
  cff_dict_set(cffont->topdict, "CharStrings", 0, offset);
  offset += cff_pack_index(cffont->cstrings,
                        stream_data_ptr + offset, charstring_len);
  /* Private */
  if ((cffont->private)[0] && private_size > 0) {
    private_size = cff_dict_pack(cffont->private[0],
                             stream_data_ptr + offset, private_size);
    cff_dict_set(cffont->topdict, "Private", 1, offset);
    cff_dict_set(cffont->topdict, "Private", 0, private_size);
  }
  offset += private_size;

  /* Finally Top DICT */
  topdict->data = NEW(topdict->offset[1] - 1, card8);
  cff_dict_pack (cffont->topdict, topdict->data, topdict->offset[1] - 1);
  cff_pack_index(topdict,
               stream_data_ptr + topdict_offset, cff_index_size(topdict));
  cff_release_index(topdict);

  /* Copyright and Trademark Notice ommited. */

  /* Flush Font File */
  fontfile    = pdf_new_stream(STREAM_COMPRESS);
  stream_dict = pdf_stream_dict(fontfile);
  pdf_add_dict(descriptor,
              pdf_new_name("FontFile3"), pdf_ref_obj (fontfile));
  pdf_add_dict(stream_dict,
              pdf_new_name("Subtype"),   pdf_new_name("Type1C"));
  pdf_add_stream (fontfile, (void *) stream_data_ptr,  offset);
  pdf_release_obj(fontfile);

  RELEASE(stream_data_ptr);

  return offset;
}

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