font.c 139 KB
Newer Older
Kenichi Handa's avatar
Kenichi Handa committed
1
/* font.c -- "Font" primitives.
Glenn Morris's avatar
Glenn Morris committed
2 3
   Copyright (C) 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
   Copyright (C) 2006, 2007, 2008, 2009
Kenichi Handa's avatar
Kenichi Handa committed
4 5 6 7 8
     National Institute of Advanced Industrial Science and Technology (AIST)
     Registration Number H13PRO009

This file is part of GNU Emacs.

9
GNU Emacs is free software: you can redistribute it and/or modify
Kenichi Handa's avatar
Kenichi Handa committed
10
it under the terms of the GNU General Public License as published by
11 12
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Kenichi Handa's avatar
Kenichi Handa committed
13 14 15 16 17 18 19

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
20
along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
Kenichi Handa's avatar
Kenichi Handa committed
21 22 23 24 25 26 27 28 29

#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>

#include "lisp.h"
#include "buffer.h"
#include "frame.h"
Kenichi Handa's avatar
Kenichi Handa committed
30
#include "window.h"
Kenichi Handa's avatar
Kenichi Handa committed
31 32 33 34 35 36 37
#include "dispextern.h"
#include "charset.h"
#include "character.h"
#include "composite.h"
#include "fontset.h"
#include "font.h"

Kenichi Handa's avatar
Kenichi Handa committed
38 39 40 41 42 43 44 45
#ifdef HAVE_X_WINDOWS
#include "xterm.h"
#endif /* HAVE_X_WINDOWS */

#ifdef HAVE_NTGUI
#include "w32term.h"
#endif /* HAVE_NTGUI */

46 47 48 49
#ifdef HAVE_NS
#include "nsterm.h"
#endif /* HAVE_NS */

Kenichi Handa's avatar
Kenichi Handa committed
50
Lisp_Object Qfont_spec, Qfont_entity, Qfont_object;
51

52 53 54
#ifdef HAVE_NS
extern Lisp_Object Qfontsize;
#endif
Kenichi Handa's avatar
Kenichi Handa committed
55

Kenichi Handa's avatar
Kenichi Handa committed
56 57
Lisp_Object Qopentype;

Kenichi Handa's avatar
Kenichi Handa committed
58
/* Important character set strings.  */
Kenichi Handa's avatar
Kenichi Handa committed
59
Lisp_Object Qascii_0, Qiso8859_1, Qiso10646_1, Qunicode_bmp, Qunicode_sip;
60

61 62 63 64 65 66
#ifdef HAVE_NS
#define DEFAULT_ENCODING Qiso10646_1
#else
#define DEFAULT_ENCODING Qiso8859_1
#endif

Kenichi Handa's avatar
Kenichi Handa committed
67 68 69
/* Unicode category `Cf'.  */
static Lisp_Object QCf;

Kenichi Handa's avatar
Kenichi Handa committed
70 71
/* Special vector of zero length.  This is repeatedly used by (struct
   font_driver *)->list when a specified font is not found. */
Kenichi Handa's avatar
Kenichi Handa committed
72
static Lisp_Object null_vector;
Kenichi Handa's avatar
Kenichi Handa committed
73

74 75 76
static Lisp_Object Vfont_weight_table, Vfont_slant_table, Vfont_width_table;

/* Vector of Vfont_weight_table, Vfont_slant_table, and Vfont_width_table. */
Kenichi Handa's avatar
Kenichi Handa committed
77 78
static Lisp_Object font_style_table;

79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135
/* Structure used for tables mapping weight, slant, and width numeric
   values and their names.  */

struct table_entry
{
  int numeric;
  /* The first one is a valid name as a face attribute.
     The second one (if any) is a typical name in XLFD field.  */
  char *names[5];
  Lisp_Object *symbols;
};

/* Table of weight numeric values and their names.  This table must be
   sorted by numeric values in ascending order.  */

static struct table_entry weight_table[] =
{
  { 0, { "thin" }},
  { 20, { "ultra-light", "ultralight" }},
  { 40, { "extra-light", "extralight" }},
  { 50, { "light" }},
  { 75, { "semi-light", "semilight", "demilight", "book" }},
  { 100, { "normal", "medium", "regular" }},
  { 180, { "semi-bold", "semibold", "demibold", "demi" }},
  { 200, { "bold" }},
  { 205, { "extra-bold", "extrabold" }},
  { 210, { "ultra-bold", "ultrabold", "black" }}
};

/* Table of slant numeric values and their names.  This table must be
   sorted by numeric values in ascending order.  */

static struct table_entry slant_table[] =
{
  { 0, { "reverse-oblique", "ro" }},
  { 10, { "reverse-italic", "ri" }},
  { 100, { "normal", "r" }},
  { 200, { "italic" ,"i", "ot" }},
  { 210, { "oblique", "o" }}
};

/* Table of width numeric values and their names.  This table must be
   sorted by numeric values in ascending order.  */

static struct table_entry width_table[] =
{
  { 50, { "ultra-condensed", "ultracondensed" }},
  { 63, { "extra-condensed", "extracondensed" }},
  { 75, { "condensed", "compressed", "narrow" }},
  { 87, { "semi-condensed", "semicondensed", "demicondensed" }},
  { 100, { "normal", "medium", "regular" }},
  { 113, { "semi-expanded", "semiexpanded", "demiexpanded" }},
  { 125, { "expanded" }},
  { 150, { "extra-expanded", "extraexpanded" }},
  { 200, { "ultra-expanded", "ultraexpanded", "wide" }}
};

Kenichi Handa's avatar
Kenichi Handa committed
136
extern Lisp_Object Qnormal;
Kenichi Handa's avatar
Kenichi Handa committed
137 138

/* Symbols representing keys of normal font properties.  */
139 140 141
extern Lisp_Object QCtype, QCfamily, QCweight, QCslant, QCwidth;
extern Lisp_Object QCheight, QCsize, QCname;

Kenichi Handa's avatar
Kenichi Handa committed
142
Lisp_Object QCfoundry, QCadstyle, QCregistry;
Kenichi Handa's avatar
Kenichi Handa committed
143
/* Symbols representing keys of font extra info.  */
Kenichi Handa's avatar
Kenichi Handa committed
144 145
Lisp_Object QCspacing, QCdpi, QCscalable, QCotf, QClang, QCscript, QCavgwidth;
Lisp_Object QCantialias, QCfont_entity, QCfc_unknown_spec;
146 147
/* Symbols representing values of font spacing property.  */
Lisp_Object Qc, Qm, Qp, Qd;
Kenichi Handa's avatar
Kenichi Handa committed
148

149 150
Lisp_Object Vfont_encoding_alist;

151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168
/* Alist of font registry symbol and the corresponding charsets
   information.  The information is retrieved from
   Vfont_encoding_alist on demand.

   Eash element has the form:
	(REGISTRY . (ENCODING-CHARSET-ID . REPERTORY-CHARSET-ID))
   or
	(REGISTRY . nil)

   In the former form, ENCODING-CHARSET-ID is an ID of a charset that
   encodes a character code to a glyph code of a font, and
   REPERTORY-CHARSET-ID is an ID of a charset that tells if a
   character is supported by a font.

   The latter form means that the information for REGISTRY couldn't be
   retrieved.  */
static Lisp_Object font_charset_alist;

169 170
/* List of all font drivers.  Each font-backend (XXXfont.c) calls
   register_font_driver in syms_of_XXXfont to register its font-driver
Kenichi Handa's avatar
Kenichi Handa committed
171 172 173
   here.  */
static struct font_driver_list *font_driver_list;

Kenichi Handa's avatar
Kenichi Handa committed
174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201


/* Creaters of font-related Lisp object.  */

Lisp_Object
font_make_spec ()
{
  Lisp_Object font_spec;
  struct font_spec *spec
    = ((struct font_spec *)
       allocate_pseudovector (VECSIZE (struct font_spec),
			      FONT_SPEC_MAX, PVEC_FONT));
  XSETFONT (font_spec, spec);
  return font_spec;
}

Lisp_Object
font_make_entity ()
{
  Lisp_Object font_entity;
  struct font_entity *entity
    = ((struct font_entity *)
       allocate_pseudovector (VECSIZE (struct font_entity),
			      FONT_ENTITY_MAX, PVEC_FONT));
  XSETFONT (font_entity, entity);
  return font_entity;
}

202 203 204
/* Create a font-object whose structure size is SIZE.  If ENTITY is
   not nil, copy properties from ENTITY to the font-object.  If
   PIXELSIZE is positive, set the `size' property to PIXELSIZE.  */
Kenichi Handa's avatar
Kenichi Handa committed
205
Lisp_Object
206
font_make_object (size, entity, pixelsize)
Kenichi Handa's avatar
Kenichi Handa committed
207
     int size;
208 209
     Lisp_Object entity;
     int pixelsize;
Kenichi Handa's avatar
Kenichi Handa committed
210 211 212 213
{
  Lisp_Object font_object;
  struct font *font
    = (struct font *) allocate_pseudovector (size, FONT_OBJECT_MAX, PVEC_FONT);
214 215
  int i;

Kenichi Handa's avatar
Kenichi Handa committed
216 217
  XSETFONT (font_object, font);

218 219 220 221 222 223 224 225 226 227
  if (! NILP (entity))
    {
      for (i = 1; i < FONT_SPEC_MAX; i++)
	font->props[i] = AREF (entity, i);
      if (! NILP (AREF (entity, FONT_EXTRA_INDEX)))
	font->props[FONT_EXTRA_INDEX]
	  = Fcopy_sequence (AREF (entity, FONT_EXTRA_INDEX));
    }
  if (size > 0)
    font->props[FONT_SIZE_INDEX] = make_number (pixelsize);
Kenichi Handa's avatar
Kenichi Handa committed
228 229 230 231 232
  return font_object;
}



233
static int font_pixel_size P_ ((FRAME_PTR f, Lisp_Object));
Kenichi Handa's avatar
Kenichi Handa committed
234
static Lisp_Object font_open_entity P_ ((FRAME_PTR, Lisp_Object, int));
Kenichi Handa's avatar
Kenichi Handa committed
235 236
static Lisp_Object font_matching_entity P_ ((FRAME_PTR, Lisp_Object *,
					     Lisp_Object));
Kenichi Handa's avatar
Kenichi Handa committed
237 238 239 240

/* Number of registered font drivers.  */
static int num_font_drivers;

Kenichi Handa's avatar
Kenichi Handa committed
241 242 243

/* Return a Lispy value of a font property value at STR and LEN bytes.
   If STR is "*", it returns nil.
244 245 246
   If FORCE_SYMBOL is zero and all characters in STR are digits, it
   returns an integer.  Otherwise, it returns a symbol interned from
   STR.  */
Kenichi Handa's avatar
Kenichi Handa committed
247 248

Lisp_Object
249
font_intern_prop (str, len, force_symbol)
Kenichi Handa's avatar
Kenichi Handa committed
250 251
     char *str;
     int len;
252
     int force_symbol;
Kenichi Handa's avatar
Kenichi Handa committed
253 254
{
  int i;
255
  Lisp_Object tem;
Kenichi Handa's avatar
Kenichi Handa committed
256
  Lisp_Object obarray;
257
  int nbytes, nchars;
Kenichi Handa's avatar
Kenichi Handa committed
258 259 260

  if (len == 1 && *str == '*')
    return Qnil;
261
  if (!force_symbol && len >=1 && isdigit (*str))
Kenichi Handa's avatar
Kenichi Handa committed
262 263 264 265 266 267 268 269
    {
      for (i = 1; i < len; i++)
	if (! isdigit (str[i]))
	  break;
      if (i == len)
	return make_number (atoi (str));
    }

270 271
  /* The following code is copied from the function intern (in
     lread.c), and modified to suite our purpose.  */
Kenichi Handa's avatar
Kenichi Handa committed
272 273 274
  obarray = Vobarray;
  if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0)
    obarray = check_obarray (obarray);
275 276 277 278 279 280 281
  parse_str_as_multibyte (str, len, &nchars, &nbytes);
  if (len == nchars || len != nbytes)
    /* CONTENTS contains no multibyte sequences or contains an invalid
       multibyte sequence.  We'll make a unibyte string.  */
    tem = oblookup (obarray, str, len, len);
  else
    tem = oblookup (obarray, str, nchars, len);
Kenichi Handa's avatar
Kenichi Handa committed
282 283
  if (SYMBOLP (tem))
    return tem;
284 285 286 287 288
  if (len == nchars || len != nbytes)
    tem = make_unibyte_string (str, len);
  else
    tem = make_multibyte_string (str, nchars, len);
  return Fintern (tem, obarray);
Kenichi Handa's avatar
Kenichi Handa committed
289 290
}

291
/* Return a pixel size of font-spec SPEC on frame F.  */
292

293 294 295 296 297
static int
font_pixel_size (f, spec)
     FRAME_PTR f;
     Lisp_Object spec;
{
298
#ifdef HAVE_WINDOW_SYSTEM
299 300
  Lisp_Object size = AREF (spec, FONT_SIZE_INDEX);
  double point_size;
Kenichi Handa's avatar
Kenichi Handa committed
301
  int dpi, pixel_size;
302
  Lisp_Object val;
303

304 305 306
  if (INTEGERP (size))
    return XINT (size);
  if (NILP (size))
307
    return 0;
308
  font_assert (FLOATP (size));
309
  point_size = XFLOAT_DATA (size);
Kenichi Handa's avatar
Kenichi Handa committed
310 311
  val = AREF (spec, FONT_DPI_INDEX);
  if (INTEGERP (val))
312
    dpi = XINT (val);
313 314 315 316
  else
    dpi = f->resy;
  pixel_size = POINT_TO_PIXEL (point_size, dpi);
  return pixel_size;
317 318 319
#else
  return 1;
#endif
320 321
}

Kenichi Handa's avatar
Kenichi Handa committed
322

Kenichi Handa's avatar
Kenichi Handa committed
323 324 325 326 327 328
/* Return a value of PROP's VAL (symbol or integer) to be stored in a
   font vector.  If VAL is not valid (i.e. not registered in
   font_style_table), return -1 if NOERROR is zero, and return a
   proper index if NOERROR is nonzero.  In that case, register VAL in
   font_style_table if VAL is a symbol, and return a closest index if
   VAL is an integer.  */
Kenichi Handa's avatar
Kenichi Handa committed
329

Kenichi Handa's avatar
Kenichi Handa committed
330 331
int
font_style_to_value (prop, val, noerror)
Kenichi Handa's avatar
Kenichi Handa committed
332
     enum font_property_index prop;
Kenichi Handa's avatar
Kenichi Handa committed
333 334
     Lisp_Object val;
     int noerror;
Kenichi Handa's avatar
Kenichi Handa committed
335
{
Kenichi Handa's avatar
Kenichi Handa committed
336 337
  Lisp_Object table = AREF (font_style_table, prop - FONT_WEIGHT_INDEX);
  int len = ASIZE (table);
338
  int i, j;
Kenichi Handa's avatar
Kenichi Handa committed
339

Kenichi Handa's avatar
Kenichi Handa committed
340
  if (SYMBOLP (val))
Kenichi Handa's avatar
Kenichi Handa committed
341
    {
342
      unsigned char *s;
Kenichi Handa's avatar
Kenichi Handa committed
343 344 345 346
      Lisp_Object args[2], elt;

      /* At first try exact match.  */
      for (i = 0; i < len; i++)
347 348 349 350
	for (j = 1; j < ASIZE (AREF (table, i)); j++)
	  if (EQ (val, AREF (AREF (table, i), j)))
	    return ((XINT (AREF (AREF (table, i), 0)) << 8)
		    | (i << 4) | (j - 1));
Kenichi Handa's avatar
Kenichi Handa committed
351
      /* Try also with case-folding match.  */
352
      s = SDATA (SYMBOL_NAME (val));
Kenichi Handa's avatar
Kenichi Handa committed
353
      for (i = 0; i < len; i++)
354 355 356
	for (j = 1; j < ASIZE (AREF (table, i)); j++)
	  {
	    elt = AREF (AREF (table, i), j);
357
	    if (xstrcasecmp (s, SDATA (SYMBOL_NAME (elt))) == 0)
358 359 360
	      return ((XINT (AREF (AREF (table, i), 0)) << 8)
		      | (i << 4) | (j - 1));
	  }
Kenichi Handa's avatar
Kenichi Handa committed
361 362 363 364
      if (! noerror)
	return -1;
      if (len == 255)
	abort ();
365 366
      elt = Fmake_vector (make_number (2), make_number (255));
      ASET (elt, 1, val);
Kenichi Handa's avatar
Kenichi Handa committed
367
      args[0] = table;
368
      args[1] = Fmake_vector (make_number (1), elt);
Kenichi Handa's avatar
Kenichi Handa committed
369
      ASET (font_style_table, prop - FONT_WEIGHT_INDEX, Fvconcat (2, args));
370
      return (255 << 8) | (i << 4);
Kenichi Handa's avatar
Kenichi Handa committed
371
    }
Kenichi Handa's avatar
Kenichi Handa committed
372 373
  else
    {
374
      int i, last_n;
Kenichi Handa's avatar
Kenichi Handa committed
375
      int numeric = XINT (val);
Kenichi Handa's avatar
Kenichi Handa committed
376

377
      for (i = 0, last_n = -1; i < len; i++)
Kenichi Handa's avatar
Kenichi Handa committed
378
	{
379
	  int n = XINT (AREF (AREF (table, i), 0));
Kenichi Handa's avatar
Kenichi Handa committed
380

Kenichi Handa's avatar
Kenichi Handa committed
381
	  if (numeric == n)
382
	    return (n << 8) | (i << 4);
Kenichi Handa's avatar
Kenichi Handa committed
383 384 385 386
	  if (numeric < n)
	    {
	      if (! noerror)
		return -1;
387 388
	      return ((i == 0 || n - numeric < numeric - last_n)
		      ? (n << 8) | (i << 4): (last_n << 8 | ((i - 1) << 4)));
Kenichi Handa's avatar
Kenichi Handa committed
389 390 391 392 393
	    }
	  last_n = n;
	}
      if (! noerror)
	return -1;
394
      return ((last_n << 8) | ((i - 1) << 4));
Kenichi Handa's avatar
Kenichi Handa committed
395 396
    }
}
Kenichi Handa's avatar
Kenichi Handa committed
397 398

Lisp_Object
399 400
font_style_symbolic (font, prop, for_face)
     Lisp_Object font;
Kenichi Handa's avatar
Kenichi Handa committed
401 402
     enum font_property_index prop;
     int for_face;
Kenichi Handa's avatar
Kenichi Handa committed
403
{
404
  Lisp_Object val = AREF (font, prop);
405 406
  Lisp_Object table, elt;
  int i;
Kenichi Handa's avatar
Kenichi Handa committed
407

Kenichi Handa's avatar
Kenichi Handa committed
408 409 410
  if (NILP (val))
    return Qnil;
  table = AREF (font_style_table, prop - FONT_WEIGHT_INDEX);
411 412 413 414
  i = XINT (val) & 0xFF;
  font_assert (((i >> 4) & 0xF) < ASIZE (table));
  elt = AREF (table, ((i >> 4) & 0xF));
  font_assert ((i & 0xF) + 1 < ASIZE (elt));
415
  return (for_face ? AREF (elt, 1) : AREF (elt, (i & 0xF) + 1));
416 417
}

Kenichi Handa's avatar
Kenichi Handa committed
418 419
extern Lisp_Object Vface_alternative_font_family_alist;

420 421
extern Lisp_Object find_font_encoding P_ ((Lisp_Object));

Kenichi Handa's avatar
Kenichi Handa committed
422

423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447
/* Return ENCODING or a cons of ENCODING and REPERTORY of the font
   FONTNAME.  ENCODING is a charset symbol that specifies the encoding
   of the font.  REPERTORY is a charset symbol or nil.  */

Lisp_Object
find_font_encoding (fontname)
     Lisp_Object fontname;
{
  Lisp_Object tail, elt;

  for (tail = Vfont_encoding_alist; CONSP (tail); tail = XCDR (tail))
    {
      elt = XCAR (tail);
      if (CONSP (elt)
	  && STRINGP (XCAR (elt))
	  && fast_string_match_ignore_case (XCAR (elt), fontname) >= 0
	  && (SYMBOLP (XCDR (elt))
	      ? CHARSETP (XCDR (elt))
	      : CONSP (XCDR (elt)) && CHARSETP (XCAR (XCDR (elt)))))
	return (XCDR (elt));
    }
  /* We don't know the encoding of this font.  Let's assume `ascii'.  */
  return Qascii;
}

448 449 450 451 452 453 454 455 456 457 458 459
/* Return encoding charset and repertory charset for REGISTRY in
   ENCODING and REPERTORY correspondingly.  If correct information for
   REGISTRY is available, return 0.  Otherwise return -1.  */

int
font_registry_charsets (registry, encoding, repertory)
     Lisp_Object registry;
     struct charset **encoding, **repertory;
{
  Lisp_Object val;
  int encoding_id, repertory_id;

Kenichi Handa's avatar
Kenichi Handa committed
460
  val = Fassoc_string (registry, font_charset_alist, Qt);
461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488
  if (! NILP (val))
    {
      val = XCDR (val);
      if (NILP (val))
	return -1;
      encoding_id = XINT (XCAR (val));
      repertory_id = XINT (XCDR (val));
    }
  else
    {
      val = find_font_encoding (SYMBOL_NAME (registry));
      if (SYMBOLP (val) && CHARSETP (val))
	{
	  encoding_id = repertory_id = XINT (CHARSET_SYMBOL_ID (val));
	}
      else if (CONSP (val))
	{
	  if (! CHARSETP (XCAR (val)))
	    goto invalid_entry;
	  encoding_id = XINT (CHARSET_SYMBOL_ID (XCAR (val)));
	  if (NILP (XCDR (val)))
	    repertory_id = -1;
	  else
	    {
	      if (! CHARSETP (XCDR (val)))
		goto invalid_entry;
	      repertory_id = XINT (CHARSET_SYMBOL_ID (XCDR (val)));
	    }
489
	}
490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508
      else
	goto invalid_entry;
      val = Fcons (make_number (encoding_id), make_number (repertory_id));
      font_charset_alist
	= nconc2 (font_charset_alist, Fcons (Fcons (registry, val), Qnil));
    }

  if (encoding)
    *encoding = CHARSET_FROM_ID (encoding_id);
  if (repertory)
    *repertory = repertory_id >= 0 ? CHARSET_FROM_ID (repertory_id) : NULL;
  return 0;

 invalid_entry:
  font_charset_alist
    = nconc2 (font_charset_alist, Fcons (Fcons (registry, Qnil), Qnil));
  return -1;
}

Kenichi Handa's avatar
Kenichi Handa committed
509

510 511 512
/* Font property value validaters.  See the comment of
   font_property_table for the meaning of the arguments.  */

Kenichi Handa's avatar
Kenichi Handa committed
513
static Lisp_Object font_prop_validate P_ ((int, Lisp_Object, Lisp_Object));
514 515 516 517
static Lisp_Object font_prop_validate_symbol P_ ((Lisp_Object, Lisp_Object));
static Lisp_Object font_prop_validate_style P_ ((Lisp_Object, Lisp_Object));
static Lisp_Object font_prop_validate_non_neg P_ ((Lisp_Object, Lisp_Object));
static Lisp_Object font_prop_validate_spacing P_ ((Lisp_Object, Lisp_Object));
Kenichi Handa's avatar
Kenichi Handa committed
518
static int get_font_prop_index P_ ((Lisp_Object));
Kenichi Handa's avatar
Kenichi Handa committed
519 520

static Lisp_Object
521
font_prop_validate_symbol (prop, val)
522
     Lisp_Object prop, val;
Kenichi Handa's avatar
Kenichi Handa committed
523 524
{
  if (STRINGP (val))
Kenichi Handa's avatar
Kenichi Handa committed
525 526
    val = Fintern (val, Qnil);
  if (! SYMBOLP (val))
Kenichi Handa's avatar
Kenichi Handa committed
527
    val = Qerror;
Kenichi Handa's avatar
Kenichi Handa committed
528 529
  else if (EQ (prop, QCregistry))
    val = Fintern (Fdowncase (SYMBOL_NAME (val)), Qnil);
Kenichi Handa's avatar
Kenichi Handa committed
530 531 532
  return val;
}

Kenichi Handa's avatar
Kenichi Handa committed
533

Kenichi Handa's avatar
Kenichi Handa committed
534
static Lisp_Object
Kenichi Handa's avatar
Kenichi Handa committed
535 536
font_prop_validate_style (style, val)
     Lisp_Object style, val;
Kenichi Handa's avatar
Kenichi Handa committed
537
{
Kenichi Handa's avatar
Kenichi Handa committed
538 539 540 541 542
  enum font_property_index prop = (EQ (style, QCweight) ? FONT_WEIGHT_INDEX
				   : EQ (style, QCslant) ? FONT_SLANT_INDEX
				   : FONT_WIDTH_INDEX);
  int n;
  if (INTEGERP (val))
Kenichi Handa's avatar
Kenichi Handa committed
543
    {
Kenichi Handa's avatar
Kenichi Handa committed
544
      n = XINT (val);
545
      if (((n >> 4) & 0xF)
Kenichi Handa's avatar
Kenichi Handa committed
546
	  >= ASIZE (AREF (font_style_table, prop - FONT_WEIGHT_INDEX)))
Kenichi Handa's avatar
Kenichi Handa committed
547 548 549
	val = Qerror;
      else
	{
550 551 552 553 554
	  Lisp_Object elt = AREF (AREF (font_style_table, prop - FONT_WEIGHT_INDEX), (n >> 4) & 0xF);

	  if ((n & 0xF) + 1 >= ASIZE (elt))
	    val = Qerror;
	  else if (XINT (AREF (elt, 0)) != (n >> 8))
Kenichi Handa's avatar
Kenichi Handa committed
555 556 557
	    val = Qerror;
	}
    }
Kenichi Handa's avatar
Kenichi Handa committed
558 559 560 561 562 563 564 565
  else if (SYMBOLP (val))
    {
      int n = font_style_to_value (prop, val, 0);

      val = n >= 0 ? make_number (n) : Qerror;
    }
  else
    val = Qerror;
Kenichi Handa's avatar
Kenichi Handa committed
566 567 568 569
  return val;
}

static Lisp_Object
570
font_prop_validate_non_neg (prop, val)
571
     Lisp_Object prop, val;
Kenichi Handa's avatar
Kenichi Handa committed
572 573 574 575 576 577
{
  return (NATNUMP (val) || (FLOATP (val) && XFLOAT_DATA (val) >= 0)
	  ? val : Qerror);
}

static Lisp_Object
578
font_prop_validate_spacing (prop, val)
579 580 581 582
     Lisp_Object prop, val;
{
  if (NILP (val) || (NATNUMP (val) && XINT (val) <= FONT_SPACING_CHARCELL))
    return val;
583 584 585 586 587 588 589 590
  if (SYMBOLP (val) && SBYTES (SYMBOL_NAME (val)) == 1)
    {
      char spacing = SDATA (SYMBOL_NAME (val))[0];

      if (spacing == 'c' || spacing == 'C')
	return make_number (FONT_SPACING_CHARCELL);
      if (spacing == 'm' || spacing == 'M')
	return make_number (FONT_SPACING_MONO);
591
      if (spacing == 'p' || spacing == 'P')
592 593 594 595
	return make_number (FONT_SPACING_PROPORTIONAL);
      if (spacing == 'd' || spacing == 'D')
	return make_number (FONT_SPACING_DUAL);
    }
596 597 598
  return Qerror;
}

599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633
static Lisp_Object
font_prop_validate_otf (prop, val)
     Lisp_Object prop, val;
{
  Lisp_Object tail, tmp;
  int i;

  /* VAL = (SCRIPT [ LANGSYS [ GSUB-FEATURES [ GPOS-FEATURES ]]])
     GSUB-FEATURES = (FEATURE ... [ nil FEATURE ... ]) | nil
     GPOS-FEATURES = (FEATURE ... [ nil FEATURE ... ]) | nil  */
  if (! CONSP (val))
    return Qerror;
  if (! SYMBOLP (XCAR (val)))
    return Qerror;
  tail = XCDR (val);
  if (NILP (tail))
    return val;
  if (! CONSP (tail) || ! SYMBOLP (XCAR (val)))
    return Qerror;
  for (i = 0; i < 2; i++)
    {
      tail = XCDR (tail);
      if (NILP (tail))
	return val;
      if (! CONSP (tail))
	return Qerror;
      for (tmp = XCAR (tail); CONSP (tmp); tmp = XCDR (tmp))
	if (! SYMBOLP (XCAR (tmp)))
	  return Qerror;
      if (! NILP (tmp))
	return Qerror;
    }
  return val;
}

634 635
/* Structure of known font property keys and validater of the
   values.  */
Kenichi Handa's avatar
Kenichi Handa committed
636 637
struct
{
638
  /* Pointer to the key symbol.  */
Kenichi Handa's avatar
Kenichi Handa committed
639
  Lisp_Object *key;
640 641 642 643
  /* Function to validate PROP's value VAL, or NULL if any value is
     ok.  The value is VAL or its regularized value if VAL is valid,
     and Qerror if not.  */
  Lisp_Object (*validater) P_ ((Lisp_Object prop, Lisp_Object val));
644 645
} font_property_table[] =
  { { &QCtype, font_prop_validate_symbol },
Kenichi Handa's avatar
Kenichi Handa committed
646 647 648 649 650 651 652
    { &QCfoundry, font_prop_validate_symbol },
    { &QCfamily, font_prop_validate_symbol },
    { &QCadstyle, font_prop_validate_symbol },
    { &QCregistry, font_prop_validate_symbol },
    { &QCweight, font_prop_validate_style },
    { &QCslant, font_prop_validate_style },
    { &QCwidth, font_prop_validate_style },
653 654 655
    { &QCsize, font_prop_validate_non_neg },
    { &QCdpi, font_prop_validate_non_neg },
    { &QCspacing, font_prop_validate_spacing },
Kenichi Handa's avatar
Kenichi Handa committed
656 657 658 659 660 661
    { &QCavgwidth, font_prop_validate_non_neg },
    /* The order of the above entries must match with enum
       font_property_index.  */
    { &QClang, font_prop_validate_symbol },
    { &QCscript, font_prop_validate_symbol },
    { &QCotf, font_prop_validate_otf }
Kenichi Handa's avatar
Kenichi Handa committed
662 663
  };

664
/* Size (number of elements) of the above table.  */
665 666 667
#define FONT_PROPERTY_TABLE_SIZE \
  ((sizeof font_property_table) / (sizeof *font_property_table))

668
/* Return an index number of font property KEY or -1 if KEY is not an
Kenichi Handa's avatar
Kenichi Handa committed
669
   already known property.  */
670

671
static int
Kenichi Handa's avatar
Kenichi Handa committed
672
get_font_prop_index (key)
Kenichi Handa's avatar
Kenichi Handa committed
673 674
     Lisp_Object key;
{
Kenichi Handa's avatar
Kenichi Handa committed
675 676 677 678 679
  int i;

  for (i = 0; i < FONT_PROPERTY_TABLE_SIZE; i++)
    if (EQ (key, *font_property_table[i].key))
      return i;
680
  return -1;
Kenichi Handa's avatar
Kenichi Handa committed
681 682
}

Kenichi Handa's avatar
Kenichi Handa committed
683 684 685
/* Validate the font property.  The property key is specified by the
   symbol PROP, or the index IDX (if PROP is nil).  If VAL is invalid,
   signal an error.  The value is VAL or the regularized one.  */
686

Kenichi Handa's avatar
Kenichi Handa committed
687
static Lisp_Object
Kenichi Handa's avatar
Kenichi Handa committed
688 689 690
font_prop_validate (idx, prop, val)
     int idx;
     Lisp_Object prop, val;
Kenichi Handa's avatar
Kenichi Handa committed
691
{
Kenichi Handa's avatar
Kenichi Handa committed
692
  Lisp_Object validated;
Kenichi Handa's avatar
Kenichi Handa committed
693

694 695
  if (NILP (val))
    return val;
Kenichi Handa's avatar
Kenichi Handa committed
696 697 698
  if (NILP (prop))
    prop = *font_property_table[idx].key;
  else
699
    {
Kenichi Handa's avatar
Kenichi Handa committed
700 701 702
      idx = get_font_prop_index (prop);
      if (idx < 0)
	return val;
703
    }
Kenichi Handa's avatar
Kenichi Handa committed
704 705 706 707
  validated = (font_property_table[idx].validater) (prop, val);
  if (EQ (validated, Qerror))
    signal_error ("invalid font property", Fcons (prop, val));
  return validated;
Kenichi Handa's avatar
Kenichi Handa committed
708
}
709

Kenichi Handa's avatar
Kenichi Handa committed
710 711 712

/* Store VAL as a value of extra font property PROP in FONT while
   keeping the sorting order.  Don't check the validity of VAL.  */
713

714
Lisp_Object
715
font_put_extra (font, prop, val)
716 717 718
     Lisp_Object font, prop, val;
{
  Lisp_Object extra = AREF (font, FONT_EXTRA_INDEX);
719
  Lisp_Object slot = (NILP (extra) ? Qnil : assq_no_quit (prop, extra));
720 721 722

  if (NILP (slot))
    {
Kenichi Handa's avatar
Kenichi Handa committed
723 724 725 726 727 728 729 730 731
      Lisp_Object prev = Qnil;

      while (CONSP (extra)
	     && NILP (Fstring_lessp (prop, XCAR (XCAR (extra)))))
	prev = extra, extra = XCDR (extra);
      if (NILP (prev))
	ASET (font, FONT_EXTRA_INDEX, Fcons (Fcons (prop, val), extra));
      else
	XSETCDR (prev, Fcons (Fcons (prop, val), extra));
732
      return val;
733 734
    }
  XSETCDR (slot, val);
735
  return val;
736 737
}

Kenichi Handa's avatar
Kenichi Handa committed
738 739 740

/* Font name parser and unparser */

741 742 743
static int parse_matrix P_ ((char *));
static int font_expand_wildcards P_ ((Lisp_Object *, int));
static int font_parse_name P_ ((char *, Lisp_Object));
Kenichi Handa's avatar
Kenichi Handa committed
744

745
/* An enumerator for each field of an XLFD font name.  */
Kenichi Handa's avatar
Kenichi Handa committed
746 747 748 749 750 751 752 753
enum xlfd_field_index
{
  XLFD_FOUNDRY_INDEX,
  XLFD_FAMILY_INDEX,
  XLFD_WEIGHT_INDEX,
  XLFD_SLANT_INDEX,
  XLFD_SWIDTH_INDEX,
  XLFD_ADSTYLE_INDEX,
754 755
  XLFD_PIXEL_INDEX,
  XLFD_POINT_INDEX,
Kenichi Handa's avatar
Kenichi Handa committed
756 757 758 759 760 761 762 763 764
  XLFD_RESX_INDEX,
  XLFD_RESY_INDEX,
  XLFD_SPACING_INDEX,
  XLFD_AVGWIDTH_INDEX,
  XLFD_REGISTRY_INDEX,
  XLFD_ENCODING_INDEX,
  XLFD_LAST_INDEX
};

765
/* An enumerator for mask bit corresponding to each XLFD field.  */
766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784
enum xlfd_field_mask
{
  XLFD_FOUNDRY_MASK = 0x0001,
  XLFD_FAMILY_MASK = 0x0002,
  XLFD_WEIGHT_MASK = 0x0004,
  XLFD_SLANT_MASK = 0x0008,
  XLFD_SWIDTH_MASK = 0x0010,
  XLFD_ADSTYLE_MASK = 0x0020,
  XLFD_PIXEL_MASK = 0x0040,
  XLFD_POINT_MASK = 0x0080,
  XLFD_RESX_MASK = 0x0100,
  XLFD_RESY_MASK = 0x0200,
  XLFD_SPACING_MASK = 0x0400,
  XLFD_AVGWIDTH_MASK = 0x0800,
  XLFD_REGISTRY_MASK = 0x1000,
  XLFD_ENCODING_MASK = 0x2000
};


Kenichi Handa's avatar
Kenichi Handa committed
785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817
/* Parse P pointing the pixel/point size field of the form
   `[A B C D]' which specifies a transformation matrix:

	A  B  0
	C  D  0
	0  0  1

   by which all glyphs of the font are transformed.  The spec says
   that scalar value N for the pixel/point size is equivalent to:
   A = N * resx/resy, B = C = 0, D = N.

   Return the scalar value N if the form is valid.  Otherwise return
   -1.  */

static int
parse_matrix (p)
     char *p;
{
  double matrix[4];
  char *end;
  int i;

  for (i = 0, p++; i < 4 && *p && *p != ']'; i++)
    {
      if (*p == '~')
	matrix[i] = - strtod (p + 1, &end);
      else
	matrix[i] = strtod (p, &end);
      p = end;
    }
  return (i == 4 ? (int) matrix[3] : -1);
}

818 819 820 821
/* Expand a wildcard field in FIELD (the first N fields are filled) to
   multiple fields to fill in all 14 XLFD fields while restring a
   field position by its contents.  */

822
static int
823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839
font_expand_wildcards (field, n)
     Lisp_Object field[XLFD_LAST_INDEX];
     int n;
{
  /* Copy of FIELD.  */
  Lisp_Object tmp[XLFD_LAST_INDEX];
  /* Array of information about where this element can go.  Nth
     element is for Nth element of FIELD. */
  struct {
    /* Minimum possible field.  */
    int from;
    /* Maxinum possible field.  */
    int to;
    /* Bit mask of possible field.  Nth bit corresponds to Nth field.  */
    int mask;
  } range[XLFD_LAST_INDEX];
  int i, j;
840
  int range_from, range_to;
841 842 843 844 845 846
  unsigned range_mask;

#define XLFD_SYMBOL_MASK (XLFD_FOUNDRY_MASK | XLFD_FAMILY_MASK \
			  | XLFD_ADSTYLE_MASK  | XLFD_REGISTRY_MASK)
#define XLFD_NULL_MASK (XLFD_FOUNDRY_MASK | XLFD_ADSTYLE_MASK)
#define XLFD_LARGENUM_MASK (XLFD_POINT_MASK | XLFD_RESX_MASK | XLFD_RESY_MASK \
847
			    | XLFD_AVGWIDTH_MASK)
848 849 850 851 852 853 854 855
#define XLFD_REGENC_MASK (XLFD_REGISTRY_MASK | XLFD_ENCODING_MASK)

  /* Initialize RANGE_MASK for FIELD[0] which can be 0th to (14 - N)th
     field.  The value is shifted to left one bit by one in the
     following loop.  */
  for (i = 0, range_mask = 0; i <= 14 - n; i++)
    range_mask = (range_mask << 1) | 1;

856 857 858 859
  /* The triplet RANGE_FROM, RANGE_TO, and RANGE_MASK is a
     position-based retriction for FIELD[I].  */
  for (i = 0, range_from = 0, range_to = 14 - n; i < n;
       i++, range_from++, range_to++, range_mask <<= 1)
860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881
    {
      Lisp_Object val = field[i];

      tmp[i] = val;
      if (NILP (val))
	{
	  /* Wildcard.  */
	  range[i].from = range_from;
	  range[i].to = range_to;
	  range[i].mask = range_mask;
	}
      else
	{
	  /* The triplet FROM, TO, and MASK is a value-based
	     retriction for FIELD[I].  */
	  int from, to;
	  unsigned mask;

	  if (INTEGERP (val))
	    {
	      int numeric = XINT (val);

882 883 884
	      if (i + 1 == n)
		from = to = XLFD_ENCODING_INDEX,
		  mask = XLFD_ENCODING_MASK;
885 886 887
	      else if (numeric == 0)
		from = XLFD_PIXEL_INDEX, to = XLFD_AVGWIDTH_INDEX,
		  mask = XLFD_PIXEL_MASK | XLFD_LARGENUM_MASK;
888 889 890
	      else if (numeric <= 48)
		from = to = XLFD_PIXEL_INDEX,
		  mask = XLFD_PIXEL_MASK;
891
	      else
892
		from = XLFD_POINT_INDEX, to = XLFD_AVGWIDTH_INDEX,
893 894
		  mask = XLFD_LARGENUM_MASK;
	    }
Kenichi Handa's avatar
Kenichi Handa committed
895
	  else if (SBYTES (SYMBOL_NAME (val)) == 0)
896 897 898 899 900 901 902 903 904 905 906 907 908 909 910
	    from = XLFD_FOUNDRY_INDEX, to = XLFD_ADSTYLE_INDEX,
	      mask = XLFD_NULL_MASK;
	  else if (i == 0)
	    from = to = XLFD_FOUNDRY_INDEX, mask = XLFD_FOUNDRY_MASK;
	  else if (i + 1 == n)
	    {
	      Lisp_Object name = SYMBOL_NAME (val);

	      if (SDATA (name)[SBYTES (name) - 1] == '*')
		from = XLFD_REGISTRY_INDEX, to = XLFD_ENCODING_INDEX,
		  mask = XLFD_REGENC_MASK;
	      else
		from = to = XLFD_ENCODING_INDEX,
		  mask = XLFD_ENCODING_MASK;
	    }
911 912
	  else if (range_from <= XLFD_WEIGHT_INDEX
		   && range_to >= XLFD_WEIGHT_INDEX
Kenichi Handa's avatar
Kenichi Handa committed
913
		   && FONT_WEIGHT_NAME_NUMERIC (val) >= 0)
914
	    from = to = XLFD_WEIGHT_INDEX, mask = XLFD_WEIGHT_MASK;
915 916
	  else if (range_from <= XLFD_SLANT_INDEX
		   && range_to >= XLFD_SLANT_INDEX
Kenichi Handa's avatar
Kenichi Handa committed
917
		   && FONT_SLANT_NAME_NUMERIC (val) >= 0)
918
	    from = to = XLFD_SLANT_INDEX, mask = XLFD_SLANT_MASK;
919 920
	  else if (range_from <= XLFD_SWIDTH_INDEX
		   && range_to >= XLFD_SWIDTH_INDEX
Kenichi Handa's avatar
Kenichi Handa committed
921
		   && FONT_WIDTH_NAME_NUMERIC (val) >= 0)
922 923 924
	    from = to = XLFD_SWIDTH_INDEX, mask = XLFD_SWIDTH_MASK;
	  else
	    {
925
	      if (EQ (val, Qc) || EQ (val, Qm) || EQ (val, Qp) || EQ (val, Qd))
926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948
		from = to = XLFD_SPACING_INDEX, mask = XLFD_SPACING_MASK;
	      else
		from = XLFD_FOUNDRY_INDEX, to = XLFD_ENCODING_INDEX,
		  mask = XLFD_SYMBOL_MASK;
	    }

	  /* Merge position-based and value-based restrictions.  */
	  mask &= range_mask;
	  while (from < range_from)
	    mask &= ~(1 << from++);
	  while (from < 14 && ! (mask & (1 << from)))
	    from++;
	  while (to > range_to)
	    mask &= ~(1 << to--);
	  while (to >= 0 && ! (mask & (1 << to)))
	    to--;
	  if (from > to)
	    return -1;
	  range[i].from = from;
	  range[i].to = to;
	  range[i].mask = mask;

	  if (from > range_from || to < range_to)
949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982
	    {
	      /* The range is narrowed by value-based restrictions.
		 Reflect it to the other fields.  */

	      /* Following fields should be after FROM.  */
	      range_from = from;
	      /* Preceding fields should be before TO.  */
	      for (j = i - 1, from--, to--; j >= 0; j--, from--, to--)
		{
		  /* Check FROM for non-wildcard field.  */
		  if (! NILP (tmp[j]) && range[j].from < from)
		    {
		      while (range[j].from < from)
			range[j].mask &= ~(1 << range[j].from++);
		      while (from < 14 && ! (range[j].mask & (1 << from)))
			from++;
		      range[j].from = from;
		    }
		  else
		    from = range[j].from;
		  if (range[j].to > to)
		    {
		      while (range[j].to > to)
			range[j].mask &= ~(1 << range[j].to--);
		      while (to >= 0 && ! (range[j].mask & (1 << to)))
			to--;
		      range[j].to = to;
		    }
		  else
		    to = range[j].to;
		  if (from > to)
		    return -1;
		}
	    }
983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008
	}
    }

  /* Decide all fileds from restrictions in RANGE.  */
  for (i = j = 0; i < n ; i++)
    {
      if (j < range[i].from)
	{
	  if (i == 0 || ! NILP (tmp[i - 1]))
	    /* None of TMP[X] corresponds to Jth field.  */
	    return -1;
	  for (; j < range[i].from; j++)
	    field[j] = Qnil;
	}
      field[j++] = tmp[i];
    }
  if (! NILP (tmp[n - 1]) && j < XLFD_REGISTRY_INDEX)
    return -1;
  for (; j < XLFD_LAST_INDEX; j++)
    field[j] = Qnil;
  if (INTEGERP (field[XLFD_ENCODING_INDEX]))
    field[XLFD_ENCODING_INDEX]
      = Fintern (Fnumber_to_string (field[XLFD_ENCODING_INDEX]), Qnil);
  return 0;
}

1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041

#ifdef ENABLE_CHECKING
/* Match a 14-field XLFD pattern against a full XLFD font name.  */
static int
font_match_xlfd (char *pattern, char *name)
{
  while (*pattern && *name)
    {
      if (*pattern == *name)
	pattern++;
      else if (*pattern == '*')
	if (*name == pattern[1])
	  pattern += 2;
	else
	  ;
      else
	return 0;
      name++;
    }
  return 1;
}

/* Make sure the font object matches the XLFD font name.  */
static int
font_check_xlfd_parse (Lisp_Object font, char *name)
{
  char name_check[256];
  font_unparse_xlfd (font, 0, name_check, 255);
  return font_match_xlfd (name_check, name);
}

#endif

Kenichi Handa's avatar
Kenichi Handa committed
1042

1043
/* Parse NAME (null terminated) as XLFD and store information in FONT
1044 1045 1046 1047 1048 1049 1050 1051
   (font-spec or font-entity).  Size property of FONT is set as
   follows:
	specified XLFD fields		FONT property
	---------------------		-------------
	PIXEL_SIZE			PIXEL_SIZE (Lisp integer)
	POINT_SIZE and RESY		calculated pixel size (Lisp integer)
	POINT_SIZE			POINT_SIZE/10 (Lisp float)

1052
   If NAME is successfully parsed, return 0.  Otherwise return -1.
1053

1054 1055
   FONT is usually a font-spec, but when this function is called from
   X font backend driver, it is a font-entity.  In that case, NAME is
Kenichi Handa's avatar
Kenichi Handa committed
1056
   a fully specified XLFD.  */
Kenichi Handa's avatar
Kenichi Handa committed
1057 1058

int
1059
font_parse_xlfd (name, font)
Kenichi Handa's avatar
Kenichi Handa committed
1060 1061 1062 1063
     char *name;
     Lisp_Object font;
{
  int len = strlen (name);
Kenichi Handa's avatar
Kenichi Handa committed
1064
  int i, j, n;
1065
  char *f[XLFD_LAST_INDEX + 1];
Kenichi Handa's avatar
Kenichi Handa committed
1066
  Lisp_Object val;
1067
  char *p;
Kenichi Handa's avatar
Kenichi Handa committed
1068 1069 1070 1071

  if (len > 255)
    /* Maximum XLFD name length is 255. */
    return -1;
1072 1073 1074 1075 1076 1077
  /* Accept "*-.." as a fully specified XLFD. */
  if (name[0] == '*' && name[1] == '-')
    i = 1, f[XLFD_FOUNDRY_INDEX] = name;
  else
    i = 0;
  for (p = name + i; *p; p++)
Kenichi Handa's avatar
Kenichi Handa committed
1078 1079 1080 1081 1082 1083 1084
    if (*p == '-')
      {
	f[i++] = p + 1;
	if (i == XLFD_LAST_INDEX)
	  break;
      }
  f[i] = name + len;
Kenichi Handa's avatar
Kenichi Handa committed
1085

1086 1087
#define INTERN_FIELD(N) font_intern_prop (f[N], f[(N) + 1] - 1 - f[N], 0)
#define INTERN_FIELD_SYM(N) font_intern_prop (f[N], f[(N) + 1] - 1 - f[N], 1)
1088

1089
  if (i == XLFD_LAST_INDEX)
1090
    {
Kenichi Handa's avatar
Kenichi Handa committed
1091
      /* Fully specified XLFD.  */
1092 1093
      int pixel_size;

1094 1095
      ASET (font, FONT_FOUNDRY_INDEX, INTERN_FIELD_SYM (XLFD_FOUNDRY_INDEX));
      ASET (font, FONT_FAMILY_INDEX, INTERN_FIELD_SYM (XLFD_FAMILY_INDEX));
Kenichi Handa's avatar
Kenichi Handa committed
1096 1097
      for (i = XLFD_WEIGHT_INDEX, j = FONT_WEIGHT_INDEX;
	   i <= XLFD_SWIDTH_INDEX; i++, j++)
1098
	{
1099
	  val = INTERN_FIELD_SYM (i);
1100
	  if (! NILP (val))
1101
	    {
1102
	      if ((n = font_style_to_value (j, INTERN_FIELD_SYM (i), 0)) < 0)
Kenichi Handa's avatar
Kenichi Handa committed
1103 1104
		return -1;
	      ASET (font, j, make_number (n));
1105 1106
	    }
	}
1107
      ASET (font, FONT_ADSTYLE_INDEX, INTERN_FIELD_SYM (XLFD_ADSTYLE_INDEX));
Kenichi Handa's avatar
Kenichi Handa committed
1108 1109 1110 1111 1112
      if (strcmp (f[XLFD_REGISTRY_INDEX], "*-*") == 0)
	ASET (font, FONT_REGISTRY_INDEX, Qnil);
      else
	ASET (font, FONT_REGISTRY_INDEX,
	      font_intern_prop (f[XLFD_REGISTRY_INDEX],
1113 1114
				f[XLFD_LAST_INDEX] - f[XLFD_REGISTRY_INDEX],
				1));
1115 1116
      p = f[XLFD_PIXEL_INDEX];
      if (*p == '[' && (pixel_size = parse_matrix (p)) >= 0)
1117
	ASET (font, FONT_SIZE_INDEX, make_number (pixel_size));
1118 1119
      else
	{
Kenichi Handa's avatar
Kenichi Handa committed
1120 1121
	  val = INTERN_FIELD (XLFD_PIXEL_INDEX);
	  if (INTEGERP (val))
1122 1123 1124 1125 1126
	    ASET (font, FONT_SIZE_INDEX, val);
	  else
	    {
	      double point_size = -1;

1127
	      font_assert (FONT_SPEC_P (font));
1128 1129 1130 1131 1132 1133 1134
	      p = f[XLFD_POINT_INDEX];
	      if (*p == '[')
		point_size = parse_matrix (p);
	      else if (isdigit (*p))
		point_size = atoi (p), point_size /= 10;
	      if (point_size >= 0)
		ASET (font, FONT_SIZE_INDEX, make_float (point_size));
1135 1136
	    }
	}
1137

Kenichi Handa's avatar
Kenichi Handa committed
1138 1139 1140
      ASET (font, FONT_DPI_INDEX, INTERN_FIELD (XLFD_RESY_INDEX));
      val = INTERN_FIELD (XLFD_SPACING_INDEX);
      if (! NILP (val))
1141
	{
Kenichi Handa's avatar
Kenichi Handa committed
1142 1143 1144 1145
	  val = font_prop_validate_spacing (QCspacing, val);
	  if (! INTEGERP (val))
	    return -1;
	  ASET (font, FONT_SPACING_INDEX, val);
1146 1147 1148 1149
	}
      p = f[XLFD_AVGWIDTH_INDEX];
      if (*p == '~')
	p++;
Kenichi Handa's avatar
Kenichi Handa committed
1150
      ASET (font, FONT_AVGWIDTH_INDEX,
1151
	    font_intern_prop (p, f[XLFD_REGISTRY_INDEX] - 1 - p, 0));
1152 1153
    }
  else
Kenichi Handa's avatar
Kenichi Handa committed
1154
    {
1155
      int wild_card_found = 0;
1156
      Lisp_Object prop[XLFD_LAST_INDEX];
1157

Kenichi Handa's avatar
Kenichi Handa committed
1158 1159
      if (FONT_ENTITY_P (font))
	return -1;
1160
      for (j = 0; j < i; j++)
1161
	{
1162
	  if (*f[j] == '*')
1163
	    {
1164 1165 1166 1167 1168 1169
	      if (f[j][1] && f[j][1] != '-')
		return -1;
	      prop[j] = Qnil;
	      wild_card_found = 1;
	    }
	  else if (j + 1 < i)
Kenichi Handa's avatar
Kenichi Handa committed
1170
	    prop[j] = INTERN_FIELD (j);
1171
	  else
1172
	    prop[j] = font_intern_prop (f[j], f[i] - f[j], 0);
1173 1174
	}
      if (! wild_card_found)
Kenichi Handa's avatar
Kenichi Handa committed
1175
	return -1;
1176
      if (font_expand_wildcards (prop, i) < 0)
1177
	return -1;
1178

Kenichi Handa's avatar
Kenichi Handa committed
1179 1180 1181 1182
      ASET (font, FONT_FOUNDRY_INDEX, prop[XLFD_FOUNDRY_INDEX]);
      ASET (font, FONT_FAMILY_INDEX, prop[XLFD_FAMILY_INDEX]);
      for (i = XLFD_WEIGHT_INDEX, j = FONT_WEIGHT_INDEX;
	   i <= XLFD_SWIDTH_INDEX; i++, j++)
1183
	if (! NILP (prop[i]))
Kenichi Handa's avatar
Kenichi Handa committed
1184 1185 1186 1187 1188 1189
	  {
	    if ((n = font_style_to_value (j, prop[i], 1)) < 0)
	      return -1;
	    ASET (font, j, make_number (n));
	  }
      ASET (font, FONT_ADSTYLE_INDEX, prop[XLFD_ADSTYLE_INDEX]);
1190 1191
      val = prop[XLFD_REGISTRY_INDEX];
      if (NILP (val))
Kenichi Handa's avatar
Kenichi Handa committed
1192
	{
1193 1194
	  val = prop[XLFD_ENCODING_INDEX];
	  if (! NILP (val))
Kenichi Handa's avatar
Kenichi Handa committed
1195
	    val = concat2 (build_string ("*-"), SYMBOL_NAME (val));
1196
	}
1197
      else if (NILP (prop[XLFD_ENCODING_INDEX]))
Kenichi Handa's avatar
Kenichi Handa committed
1198
	val = concat2 (SYMBOL_NAME (val), build_string ("-*"));
1199
      else
Kenichi Handa's avatar
Kenichi Handa committed
1200 1201
	val = concat3 (SYMBOL_NAME (val), build_string ("-"),
		       SYMBOL_NAME (prop[XLFD_ENCODING_INDEX]));
1202
      if (! NILP (val))
Kenichi Handa's avatar
Kenichi Handa committed
1203
	ASET (font, FONT_REGISTRY_INDEX, Fintern (val, Qnil));
1204 1205 1206 1207

      if (INTEGERP (prop[XLFD_PIXEL_INDEX]))
	ASET (font, FONT_SIZE_INDEX, prop[XLFD_PIXEL_INDEX]);
      else if (INTEGERP (prop[XLFD_POINT_INDEX]))
1208
	{
1209
	  double point_size = XINT (prop[XLFD_POINT_INDEX]);
Kenichi Handa's avatar
Kenichi Handa committed
1210

1211 1212
	  ASET (font, FONT_SIZE_INDEX, make_float (point_size / 10));
	}
Kenichi Handa's avatar
Kenichi Handa committed
1213

Kenichi Handa's avatar
Kenichi Handa committed
1214 1215 1216 1217 1218 1219 1220 1221 1222 1223
      if (INTEGERP (prop[XLFD_RESX_INDEX]))
	ASET (font, FONT_DPI_INDEX, prop[XLFD_RESY_INDEX]);
      if (! NILP (prop[XLFD_SPACING_INDEX]))
	{
	  val = font_prop_validate_spacing (QCspacing,
					    prop[XLFD_SPACING_INDEX]);
	  if (! INTEGERP (val))
	    return -1;
	  ASET (font, FONT_SPACING_INDEX, val);
	}
1224
      if (INTEGERP (prop[XLFD_AVGWIDTH_INDEX]))
Kenichi Handa's avatar
Kenichi Handa committed
1225
	ASET (font, FONT_AVGWIDTH_INDEX, prop[XLFD_AVGWIDTH_INDEX]);