font.c 124 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 Free Software Foundation, Inc.
   Copyright (C) 2006, 2007, 2008
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

#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
26 27 28
#ifdef HAVE_M17N_FLT
#include <m17n-flt.h>
#endif
Kenichi Handa's avatar
Kenichi Handa committed
29 30 31 32

#include "lisp.h"
#include "buffer.h"
#include "frame.h"
Kenichi Handa's avatar
Kenichi Handa committed
33
#include "window.h"
Kenichi Handa's avatar
Kenichi Handa committed
34 35 36 37 38 39 40
#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
41 42 43 44 45 46 47 48 49 50 51 52
#ifdef HAVE_X_WINDOWS
#include "xterm.h"
#endif /* HAVE_X_WINDOWS */

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

#ifdef MAC_OS
#include "macterm.h"
#endif /* MAC_OS */

Kenichi Handa's avatar
Kenichi Handa committed
53
Lisp_Object Qfont_spec, Qfont_entity, Qfont_object;
Kenichi Handa's avatar
Kenichi Handa committed
54

Kenichi Handa's avatar
Kenichi Handa committed
55 56
Lisp_Object Qopentype;

Kenichi Handa's avatar
Kenichi Handa committed
57
/* Important character set strings.  */
Kenichi Handa's avatar
Kenichi Handa committed
58
Lisp_Object Qiso8859_1, Qiso10646_1, Qunicode_bmp, Qunicode_sip;
59

Kenichi Handa's avatar
Kenichi Handa committed
60 61
/* 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
62
static Lisp_Object null_vector;
Kenichi Handa's avatar
Kenichi Handa committed
63

64 65 66
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
67 68
static Lisp_Object font_style_table;

69 70 71 72 73 74 75 76 77 78 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
/* 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
126
extern Lisp_Object Qnormal;
Kenichi Handa's avatar
Kenichi Handa committed
127 128 129

/* Symbols representing keys of normal font properties.  */
extern Lisp_Object QCtype, QCfamily, QCweight, QCslant, QCwidth, QCsize, QCname;
Kenichi Handa's avatar
Kenichi Handa committed
130
Lisp_Object QCfoundry, QCadstyle, QCregistry;
Kenichi Handa's avatar
Kenichi Handa committed
131
/* Symbols representing keys of font extra info.  */
Kenichi Handa's avatar
Kenichi Handa committed
132 133
Lisp_Object QCspacing, QCdpi, QCscalable, QCotf, QClang, QCscript, QCavgwidth;
Lisp_Object QCantialias, QCfont_entity, QCfc_unknown_spec;
134 135
/* Symbols representing values of font spacing property.  */
Lisp_Object Qc, Qm, Qp, Qd;
Kenichi Handa's avatar
Kenichi Handa committed
136

137 138
Lisp_Object Vfont_encoding_alist;

139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156
/* 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;

157 158
/* 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
159 160 161
   here.  */
static struct font_driver_list *font_driver_list;

Kenichi Handa's avatar
Kenichi Handa committed
162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203


/* 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;
}

Lisp_Object
font_make_object (size)
     int size;
{
  Lisp_Object font_object;
  struct font *font
    = (struct font *) allocate_pseudovector (size, FONT_OBJECT_MAX, PVEC_FONT);
  XSETFONT (font_object, font);

  return font_object;
}



204
static int font_pixel_size P_ ((FRAME_PTR f, Lisp_Object));
Kenichi Handa's avatar
Kenichi Handa committed
205
static Lisp_Object font_open_entity P_ ((FRAME_PTR, Lisp_Object, int));
Kenichi Handa's avatar
Kenichi Handa committed
206 207
static Lisp_Object font_matching_entity P_ ((FRAME_PTR, Lisp_Object *,
					     Lisp_Object));
Kenichi Handa's avatar
Kenichi Handa committed
208 209 210 211

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

Kenichi Handa's avatar
Kenichi Handa committed
212 213 214 215 216 217 218 219 220 221 222 223

/* Return a Lispy value of a font property value at STR and LEN bytes.
   If STR is "*", it returns nil.
   If all characters in STR are digits, it returns an integer.
   Otherwise, it returns a symbol interned from STR.  */

Lisp_Object
font_intern_prop (str, len)
     char *str;
     int len;
{
  int i;
224
  Lisp_Object tem;
Kenichi Handa's avatar
Kenichi Handa committed
225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247
  Lisp_Object obarray;

  if (len == 1 && *str == '*')
    return Qnil;
  if (len >=1 && isdigit (*str))
    {
      for (i = 1; i < len; i++)
	if (! isdigit (str[i]))
	  break;
      if (i == len)
	return make_number (atoi (str));
    }

  /* The following code is copied from the function intern (in lread.c).  */
  obarray = Vobarray;
  if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0)
    obarray = check_obarray (obarray);
  tem = oblookup (obarray, str, len, len);
  if (SYMBOLP (tem))
    return tem;
  return Fintern (make_unibyte_string (str, len), obarray);
}

248
/* Return a pixel size of font-spec SPEC on frame F.  */
249

250 251 252 253 254
static int
font_pixel_size (f, spec)
     FRAME_PTR f;
     Lisp_Object spec;
{
255
#ifdef HAVE_WINDOW_SYSTEM
256 257
  Lisp_Object size = AREF (spec, FONT_SIZE_INDEX);
  double point_size;
Kenichi Handa's avatar
Kenichi Handa committed
258
  int dpi, pixel_size;
259
  Lisp_Object val;
260

261 262 263
  if (INTEGERP (size))
    return XINT (size);
  if (NILP (size))
264
    return 0;
265
  font_assert (FLOATP (size));
266
  point_size = XFLOAT_DATA (size);
Kenichi Handa's avatar
Kenichi Handa committed
267 268 269
  val = AREF (spec, FONT_DPI_INDEX);
  if (INTEGERP (val))
    dpi = XINT (XCDR (val));
270 271 272 273
  else
    dpi = f->resy;
  pixel_size = POINT_TO_PIXEL (point_size, dpi);
  return pixel_size;
274 275 276
#else
  return 1;
#endif
277 278
}

Kenichi Handa's avatar
Kenichi Handa committed
279

Kenichi Handa's avatar
Kenichi Handa committed
280 281 282 283 284 285
/* 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
286

Kenichi Handa's avatar
Kenichi Handa committed
287 288
int
font_style_to_value (prop, val, noerror)
Kenichi Handa's avatar
Kenichi Handa committed
289
     enum font_property_index prop;
Kenichi Handa's avatar
Kenichi Handa committed
290 291
     Lisp_Object val;
     int noerror;
Kenichi Handa's avatar
Kenichi Handa committed
292
{
Kenichi Handa's avatar
Kenichi Handa committed
293 294
  Lisp_Object table = AREF (font_style_table, prop - FONT_WEIGHT_INDEX);
  int len = ASIZE (table);
295
  int i, j;
Kenichi Handa's avatar
Kenichi Handa committed
296

Kenichi Handa's avatar
Kenichi Handa committed
297
  if (SYMBOLP (val))
Kenichi Handa's avatar
Kenichi Handa committed
298
    {
Kenichi Handa's avatar
Kenichi Handa committed
299 300 301 302 303
      char *s;
      Lisp_Object args[2], elt;

      /* At first try exact match.  */
      for (i = 0; i < len; i++)
304 305 306 307
	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
308
      /* Try also with case-folding match.  */
309
      s = (char *) SDATA (SYMBOL_NAME (val));
Kenichi Handa's avatar
Kenichi Handa committed
310
      for (i = 0; i < len; i++)
311 312 313
	for (j = 1; j < ASIZE (AREF (table, i)); j++)
	  {
	    elt = AREF (AREF (table, i), j);
314
	    if (xstrcasecmp (s, (char *) SDATA (SYMBOL_NAME (elt))) == 0)
315 316 317
	      return ((XINT (AREF (AREF (table, i), 0)) << 8)
		      | (i << 4) | (j - 1));
	  }
Kenichi Handa's avatar
Kenichi Handa committed
318 319 320 321
      if (! noerror)
	return -1;
      if (len == 255)
	abort ();
322 323
      elt = Fmake_vector (make_number (2), make_number (255));
      ASET (elt, 1, val);
Kenichi Handa's avatar
Kenichi Handa committed
324
      args[0] = table;
325
      args[1] = Fmake_vector (make_number (1), elt);
Kenichi Handa's avatar
Kenichi Handa committed
326
      ASET (font_style_table, prop - FONT_WEIGHT_INDEX, Fvconcat (2, args));
327
      return (255 << 8) | (i << 4);
Kenichi Handa's avatar
Kenichi Handa committed
328
    }
Kenichi Handa's avatar
Kenichi Handa committed
329 330
  else
    {
331
      int i, last_n;
Kenichi Handa's avatar
Kenichi Handa committed
332
      int numeric = XINT (val);
Kenichi Handa's avatar
Kenichi Handa committed
333

334
      for (i = 0, last_n = -1; i < len; i++)
Kenichi Handa's avatar
Kenichi Handa committed
335
	{
336
	  int n = XINT (AREF (AREF (table, i), 0));
Kenichi Handa's avatar
Kenichi Handa committed
337

Kenichi Handa's avatar
Kenichi Handa committed
338
	  if (numeric == n)
339
	    return (n << 8) | (i << 4);
Kenichi Handa's avatar
Kenichi Handa committed
340 341 342 343
	  if (numeric < n)
	    {
	      if (! noerror)
		return -1;
344 345
	      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
346 347 348 349 350
	    }
	  last_n = n;
	}
      if (! noerror)
	return -1;
351
      return ((last_n << 8) | ((i - 1) << 4));
Kenichi Handa's avatar
Kenichi Handa committed
352 353
    }
}
Kenichi Handa's avatar
Kenichi Handa committed
354 355

Lisp_Object
Kenichi Handa's avatar
Kenichi Handa committed
356 357 358 359
font_style_symbolic (font, prop, for_face)
     Lisp_Object font;
     enum font_property_index prop;
     int for_face;
Kenichi Handa's avatar
Kenichi Handa committed
360
{
Kenichi Handa's avatar
Kenichi Handa committed
361
  Lisp_Object val = AREF (font, prop);
362 363
  Lisp_Object table, elt;
  int i;
Kenichi Handa's avatar
Kenichi Handa committed
364

Kenichi Handa's avatar
Kenichi Handa committed
365 366 367
  if (NILP (val))
    return Qnil;
  table = AREF (font_style_table, prop - FONT_WEIGHT_INDEX);
368 369 370 371 372
  i = XINT (val) & 0xFF;
  font_assert (((i >> 4) & 0xF) < ASIZE (table));
  elt = AREF (table, ((i >> 4) & 0xF));
  font_assert ((i & 0xF) + 1 < ASIZE (elt));
  return (for_face ? AREF (elt, 1) : AREF (elt, (i & 0xF) + 1));
Kenichi Handa's avatar
Kenichi Handa committed
373 374 375 376
}

extern Lisp_Object Vface_alternative_font_family_alist;

377 378
extern Lisp_Object find_font_encoding P_ ((Lisp_Object));

Kenichi Handa's avatar
Kenichi Handa committed
379

380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404
/* 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;
}

405 406 407 408 409 410 411 412 413 414 415 416
/* 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
417
  val = Fassoc_string (registry, font_charset_alist, Qt);
418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445
  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)));
	    }
446
	}
447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465
      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
466

467 468 469
/* Font property value validaters.  See the comment of
   font_property_table for the meaning of the arguments.  */

Kenichi Handa's avatar
Kenichi Handa committed
470
static Lisp_Object font_prop_validate P_ ((int, Lisp_Object, Lisp_Object));
471 472 473 474
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
475
static int get_font_prop_index P_ ((Lisp_Object));
Kenichi Handa's avatar
Kenichi Handa committed
476 477

static Lisp_Object
478
font_prop_validate_symbol (prop, val)
479
     Lisp_Object prop, val;
Kenichi Handa's avatar
Kenichi Handa committed
480 481
{
  if (STRINGP (val))
Kenichi Handa's avatar
Kenichi Handa committed
482 483
    val = Fintern (val, Qnil);
  if (! SYMBOLP (val))
Kenichi Handa's avatar
Kenichi Handa committed
484
    val = Qerror;
Kenichi Handa's avatar
Kenichi Handa committed
485 486
  else if (EQ (prop, QCregistry))
    val = Fintern (Fdowncase (SYMBOL_NAME (val)), Qnil);
Kenichi Handa's avatar
Kenichi Handa committed
487 488 489
  return val;
}

Kenichi Handa's avatar
Kenichi Handa committed
490

Kenichi Handa's avatar
Kenichi Handa committed
491
static Lisp_Object
Kenichi Handa's avatar
Kenichi Handa committed
492 493
font_prop_validate_style (style, val)
     Lisp_Object style, val;
Kenichi Handa's avatar
Kenichi Handa committed
494
{
Kenichi Handa's avatar
Kenichi Handa committed
495 496 497 498 499
  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
500
    {
Kenichi Handa's avatar
Kenichi Handa committed
501
      n = XINT (val);
502
      if (((n >> 4) & 0xF)
Kenichi Handa's avatar
Kenichi Handa committed
503
	  >= ASIZE (AREF (font_style_table, prop - FONT_WEIGHT_INDEX)))
Kenichi Handa's avatar
Kenichi Handa committed
504 505 506
	val = Qerror;
      else
	{
507 508 509 510 511
	  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
512 513 514
	    val = Qerror;
	}
    }
Kenichi Handa's avatar
Kenichi Handa committed
515 516 517 518 519 520 521 522
  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
523 524 525 526
  return val;
}

static Lisp_Object
527
font_prop_validate_non_neg (prop, val)
528
     Lisp_Object prop, val;
Kenichi Handa's avatar
Kenichi Handa committed
529 530 531 532 533 534
{
  return (NATNUMP (val) || (FLOATP (val) && XFLOAT_DATA (val) >= 0)
	  ? val : Qerror);
}

static Lisp_Object
535
font_prop_validate_spacing (prop, val)
536 537 538 539 540 541 542 543 544 545
     Lisp_Object prop, val;
{
  if (NILP (val) || (NATNUMP (val) && XINT (val) <= FONT_SPACING_CHARCELL))
    return val;
  if (EQ (val, Qc))
    return make_number (FONT_SPACING_CHARCELL);
  if (EQ (val, Qm))
    return make_number (FONT_SPACING_MONO);
  if (EQ (val, Qp))
    return make_number (FONT_SPACING_PROPORTIONAL);
Kenichi Handa's avatar
Kenichi Handa committed
546 547
  if (EQ (val, Qd))
    return make_number (FONT_SPACING_DUAL);
548 549 550
  return Qerror;
}

551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585
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;
}

586 587
/* Structure of known font property keys and validater of the
   values.  */
Kenichi Handa's avatar
Kenichi Handa committed
588 589
struct
{
590
  /* Pointer to the key symbol.  */
Kenichi Handa's avatar
Kenichi Handa committed
591
  Lisp_Object *key;
592 593 594 595
  /* 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));
596 597
} font_property_table[] =
  { { &QCtype, font_prop_validate_symbol },
Kenichi Handa's avatar
Kenichi Handa committed
598 599 600 601 602 603 604
    { &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 },
605 606 607
    { &QCsize, font_prop_validate_non_neg },
    { &QCdpi, font_prop_validate_non_neg },
    { &QCspacing, font_prop_validate_spacing },
Kenichi Handa's avatar
Kenichi Handa committed
608 609 610 611 612 613
    { &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
614 615
  };

616
/* Size (number of elements) of the above table.  */
617 618 619
#define FONT_PROPERTY_TABLE_SIZE \
  ((sizeof font_property_table) / (sizeof *font_property_table))

620
/* Return an index number of font property KEY or -1 if KEY is not an
Kenichi Handa's avatar
Kenichi Handa committed
621
   already known property.  */
622

623
static int
Kenichi Handa's avatar
Kenichi Handa committed
624
get_font_prop_index (key)
Kenichi Handa's avatar
Kenichi Handa committed
625 626
     Lisp_Object key;
{
Kenichi Handa's avatar
Kenichi Handa committed
627 628 629 630 631
  int i;

  for (i = 0; i < FONT_PROPERTY_TABLE_SIZE; i++)
    if (EQ (key, *font_property_table[i].key))
      return i;
632
  return -1;
Kenichi Handa's avatar
Kenichi Handa committed
633 634
}

Kenichi Handa's avatar
Kenichi Handa committed
635 636 637
/* 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.  */
638

Kenichi Handa's avatar
Kenichi Handa committed
639
static Lisp_Object
Kenichi Handa's avatar
Kenichi Handa committed
640 641 642
font_prop_validate (idx, prop, val)
     int idx;
     Lisp_Object prop, val;
Kenichi Handa's avatar
Kenichi Handa committed
643
{
Kenichi Handa's avatar
Kenichi Handa committed
644
  Lisp_Object validated;
Kenichi Handa's avatar
Kenichi Handa committed
645

646 647
  if (NILP (val))
    return val;
Kenichi Handa's avatar
Kenichi Handa committed
648 649 650
  if (NILP (prop))
    prop = *font_property_table[idx].key;
  else
651
    {
Kenichi Handa's avatar
Kenichi Handa committed
652 653 654
      idx = get_font_prop_index (prop);
      if (idx < 0)
	return val;
655
    }
Kenichi Handa's avatar
Kenichi Handa committed
656 657 658 659
  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
660
}
661

Kenichi Handa's avatar
Kenichi Handa committed
662 663 664

/* Store VAL as a value of extra font property PROP in FONT while
   keeping the sorting order.  Don't check the validity of VAL.  */
665

666
Lisp_Object
667
font_put_extra (font, prop, val)
668 669 670
     Lisp_Object font, prop, val;
{
  Lisp_Object extra = AREF (font, FONT_EXTRA_INDEX);
671
  Lisp_Object slot = (NILP (extra) ? Qnil : assq_no_quit (prop, extra));
672 673 674

  if (NILP (slot))
    {
Kenichi Handa's avatar
Kenichi Handa committed
675 676 677 678 679 680 681 682 683
      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));
684
      return val;
685 686
    }
  XSETCDR (slot, val);
687
  return val;
688 689
}

Kenichi Handa's avatar
Kenichi Handa committed
690 691 692

/* Font name parser and unparser */

693 694 695
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
696

697
/* An enumerator for each field of an XLFD font name.  */
Kenichi Handa's avatar
Kenichi Handa committed
698 699 700 701 702 703 704 705
enum xlfd_field_index
{
  XLFD_FOUNDRY_INDEX,
  XLFD_FAMILY_INDEX,
  XLFD_WEIGHT_INDEX,
  XLFD_SLANT_INDEX,
  XLFD_SWIDTH_INDEX,
  XLFD_ADSTYLE_INDEX,
706 707
  XLFD_PIXEL_INDEX,
  XLFD_POINT_INDEX,
Kenichi Handa's avatar
Kenichi Handa committed
708 709 710 711 712 713 714 715 716
  XLFD_RESX_INDEX,
  XLFD_RESY_INDEX,
  XLFD_SPACING_INDEX,
  XLFD_AVGWIDTH_INDEX,
  XLFD_REGISTRY_INDEX,
  XLFD_ENCODING_INDEX,
  XLFD_LAST_INDEX
};

717
/* An enumerator for mask bit corresponding to each XLFD field.  */
718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736
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
737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769
/* 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);
}

770 771 772 773
/* 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.  */

774
static int
775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791
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;
792
  int range_from, range_to;
793 794 795 796 797 798
  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 \
799
			    | XLFD_AVGWIDTH_MASK)
800 801 802 803 804 805 806 807
#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;

808 809 810 811
  /* 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)
812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833
    {
      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);

834 835 836
	      if (i + 1 == n)
		from = to = XLFD_ENCODING_INDEX,
		  mask = XLFD_ENCODING_MASK;
837 838 839
	      else if (numeric == 0)
		from = XLFD_PIXEL_INDEX, to = XLFD_AVGWIDTH_INDEX,
		  mask = XLFD_PIXEL_MASK | XLFD_LARGENUM_MASK;
840 841 842
	      else if (numeric <= 48)
		from = to = XLFD_PIXEL_INDEX,
		  mask = XLFD_PIXEL_MASK;
843
	      else
844
		from = XLFD_POINT_INDEX, to = XLFD_AVGWIDTH_INDEX,
845 846
		  mask = XLFD_LARGENUM_MASK;
	    }
Kenichi Handa's avatar
Kenichi Handa committed
847
	  else if (SBYTES (SYMBOL_NAME (val)) == 0)
848 849 850 851 852 853 854 855 856 857 858 859 860 861 862
	    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;
	    }
863 864
	  else if (range_from <= XLFD_WEIGHT_INDEX
		   && range_to >= XLFD_WEIGHT_INDEX
Kenichi Handa's avatar
Kenichi Handa committed
865
		   && FONT_WEIGHT_NAME_NUMERIC (val) >= 0)
866
	    from = to = XLFD_WEIGHT_INDEX, mask = XLFD_WEIGHT_MASK;
867 868
	  else if (range_from <= XLFD_SLANT_INDEX
		   && range_to >= XLFD_SLANT_INDEX
Kenichi Handa's avatar
Kenichi Handa committed
869
		   && FONT_SLANT_NAME_NUMERIC (val) >= 0)
870
	    from = to = XLFD_SLANT_INDEX, mask = XLFD_SLANT_MASK;
871 872
	  else if (range_from <= XLFD_SWIDTH_INDEX
		   && range_to >= XLFD_SWIDTH_INDEX
Kenichi Handa's avatar
Kenichi Handa committed
873
		   && FONT_WIDTH_NAME_NUMERIC (val) >= 0)
874 875 876
	    from = to = XLFD_SWIDTH_INDEX, mask = XLFD_SWIDTH_MASK;
	  else
	    {
877
	      if (EQ (val, Qc) || EQ (val, Qm) || EQ (val, Qp) || EQ (val, Qd))
878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900
		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)
901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934
	    {
	      /* 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;
		}
	    }
935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960
	}
    }

  /* 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;
}

961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993

#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
994

995
/* Parse NAME (null terminated) as XLFD and store information in FONT
996 997 998 999 1000 1001 1002 1003
   (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)

1004
   If NAME is successfully parsed, return 0.  Otherwise return -1.
1005

1006 1007
   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
1008
   a fully specified XLFD.  */
Kenichi Handa's avatar
Kenichi Handa committed
1009 1010

int
1011
font_parse_xlfd (name, font)
Kenichi Handa's avatar
Kenichi Handa committed
1012 1013 1014 1015
     char *name;
     Lisp_Object font;
{
  int len = strlen (name);
Kenichi Handa's avatar
Kenichi Handa committed
1016
  int i, j, n;
1017
  char *f[XLFD_LAST_INDEX + 1];
Kenichi Handa's avatar
Kenichi Handa committed
1018
  Lisp_Object val;
1019
  char *p;
Kenichi Handa's avatar
Kenichi Handa committed
1020 1021 1022 1023

  if (len > 255)
    /* Maximum XLFD name length is 255. */
    return -1;
1024 1025 1026 1027 1028 1029
  /* 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
1030 1031 1032 1033 1034 1035 1036
    if (*p == '-')
      {
	f[i++] = p + 1;
	if (i == XLFD_LAST_INDEX)
	  break;
      }
  f[i] = name + len;
Kenichi Handa's avatar
Kenichi Handa committed
1037

Kenichi Handa's avatar
Kenichi Handa committed
1038
#define INTERN_FIELD(N) font_intern_prop (f[N], f[(N) + 1] - 1 - f[N])
1039

1040
  if (i == XLFD_LAST_INDEX)
1041
    {
Kenichi Handa's avatar
Kenichi Handa committed
1042
      /* Fully specified XLFD.  */
1043 1044
      int pixel_size;

Kenichi Handa's avatar
Kenichi Handa committed
1045 1046 1047 1048
      ASET (font, FONT_FOUNDRY_INDEX, INTERN_FIELD (XLFD_FOUNDRY_INDEX));
      ASET (font, FONT_FAMILY_INDEX, INTERN_FIELD (XLFD_FAMILY_INDEX));
      for (i = XLFD_WEIGHT_INDEX, j = FONT_WEIGHT_INDEX;
	   i <= XLFD_SWIDTH_INDEX; i++, j++)
1049
	{
Kenichi Handa's avatar
Kenichi Handa committed
1050
	  val = INTERN_FIELD (i);
1051
	  if (! NILP (val))
1052
	    {
Kenichi Handa's avatar
Kenichi Handa committed
1053 1054 1055
	      if ((n = font_style_to_value (j, INTERN_FIELD (i), 0)) < 0)
		return -1;
	      ASET (font, j, make_number (n));
1056 1057
	    }
	}
Kenichi Handa's avatar
Kenichi Handa committed
1058 1059 1060 1061 1062 1063 1064
      ASET (font, FONT_ADSTYLE_INDEX, INTERN_FIELD (XLFD_ADSTYLE_INDEX));
      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],
				f[XLFD_LAST_INDEX] - f[XLFD_REGISTRY_INDEX]));
1065 1066
      p = f[XLFD_PIXEL_INDEX];
      if (*p == '[' && (pixel_size = parse_matrix (p)) >= 0)
1067
	ASET (font, FONT_SIZE_INDEX, make_number (pixel_size));
1068 1069
      else
	{
Kenichi Handa's avatar
Kenichi Handa committed
1070 1071
	  val = INTERN_FIELD (XLFD_PIXEL_INDEX);
	  if (INTEGERP (val))
1072 1073 1074 1075 1076
	    ASET (font, FONT_SIZE_INDEX, val);
	  else
	    {
	      double point_size = -1;

1077
	      font_assert (FONT_SPEC_P (font));
1078 1079 1080 1081 1082 1083 1084
	      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));
1085 1086
	    }
	}
1087

Kenichi Handa's avatar
Kenichi Handa committed
1088 1089 1090
      ASET (font, FONT_DPI_INDEX, INTERN_FIELD (XLFD_RESY_INDEX));
      val = INTERN_FIELD (XLFD_SPACING_INDEX);
      if (! NILP (val))
1091
	{
Kenichi Handa's avatar
Kenichi Handa committed
1092 1093 1094 1095
	  val = font_prop_validate_spacing (QCspacing, val);
	  if (! INTEGERP (val))
	    return -1;
	  ASET (font, FONT_SPACING_INDEX, val);
1096 1097 1098 1099
	}
      p = f[XLFD_AVGWIDTH_INDEX];
      if (*p == '~')
	p++;
Kenichi Handa's avatar
Kenichi Handa committed
1100 1101
      ASET (font, FONT_AVGWIDTH_INDEX,
	    font_intern_prop (p, f[XLFD_REGISTRY_INDEX] - 1 - p));
1102 1103
    }
  else
Kenichi Handa's avatar
Kenichi Handa committed
1104
    {
1105
      int wild_card_found = 0;
1106
      Lisp_Object prop[XLFD_LAST_INDEX];
1107

Kenichi Handa's avatar
Kenichi Handa committed
1108 1109
      if (FONT_ENTITY_P (font))
	return -1;
1110
      for (j = 0; j < i; j++)
1111
	{
1112
	  if (*f[j] == '*')
1113
	    {
1114 1115 1116 1117 1118 1119
	      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
1120
	    prop[j] = INTERN_FIELD (j);
1121
	  else
Kenichi Handa's avatar
Kenichi Handa committed
1122
	    prop[j] = font_intern_prop (f[j], f[i] - f[j]);
1123 1124
	}
      if (! wild_card_found)
Kenichi Handa's avatar
Kenichi Handa committed
1125
	return -1;
1126
      if (font_expand_wildcards (prop, i) < 0)
1127
	return -1;
1128

Kenichi Handa's avatar
Kenichi Handa committed
1129 1130 1131 1132
      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++)
1133
	if (! NILP (prop[i]))
Kenichi Handa's avatar
Kenichi Handa committed
1134 1135 1136 1137 1138 1139
	  {
	    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]);
1140 1141
      val = prop[XLFD_REGISTRY_INDEX];
      if (NILP (val))
Kenichi Handa's avatar
Kenichi Handa committed
1142
	{
1143 1144
	  val = prop[XLFD_ENCODING_INDEX];
	  if (! NILP (val))
Kenichi Handa's avatar
Kenichi Handa committed
1145
	    val = concat2 (build_string ("*-"), SYMBOL_NAME (val));
1146
	}
1147
      else if (NILP (prop[XLFD_ENCODING_INDEX]))
Kenichi Handa's avatar
Kenichi Handa committed
1148
	val = concat2 (SYMBOL_NAME (val), build_string ("-*"));
1149
      else
Kenichi Handa's avatar
Kenichi Handa committed
1150 1151
	val = concat3 (SYMBOL_NAME (val), build_string ("-"),
		       SYMBOL_NAME (prop[XLFD_ENCODING_INDEX]));
1152
      if (! NILP (val))
Kenichi Handa's avatar
Kenichi Handa committed
1153
	ASET (font, FONT_REGISTRY_INDEX, Fintern (val, Qnil));
1154 1155 1156 1157

      if (INTEGERP (prop[XLFD_PIXEL_INDEX]))
	ASET (font, FONT_SIZE_INDEX, prop[XLFD_PIXEL_INDEX]);
      else if (INTEGERP (prop[XLFD_POINT_INDEX]))
1158
	{
1159
	  double point_size = XINT (prop[XLFD_POINT_INDEX]);
Kenichi Handa's avatar
Kenichi Handa committed
1160

1161 1162
	  ASET (font, FONT_SIZE_INDEX, make_float (point_size / 10));
	}
Kenichi Handa's avatar
Kenichi Handa committed
1163

Kenichi Handa's avatar
Kenichi Handa committed
1164 1165 1166 1167 1168 1169 1170 1171 1172 1173
      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);
	}
1174
      if (INTEGERP (prop[XLFD_AVGWIDTH_INDEX]))
Kenichi Handa's avatar
Kenichi Handa committed
1175
	ASET (font, FONT_AVGWIDTH_INDEX, prop[XLFD_AVGWIDTH_INDEX]);
Kenichi Handa's avatar
Kenichi Handa committed
1176 1177
    }

1178
  return 0;
Kenichi Handa's avatar
Kenichi Handa committed
1179 1180 1181 1182 1183 1184 1185 1186 1187
}

/* Store XLFD name of FONT (font-spec or font-entity) in NAME (NBYTES
   length), and return the name length.  If FONT_SIZE_INDEX of FONT is
   0, use PIXEL_SIZE instead.  */

int
font_unparse_xlfd (font, pixel_size, name, nbytes)
     Lisp_Object font;
1188
     int pixel_size;
Kenichi Handa's avatar
Kenichi Handa committed
1189 1190 1191
     char *name;
     int nbytes;
{
1192
  char *f[XLFD_REGISTRY_INDEX + 1];
Kenichi Handa's avatar
Kenichi Handa committed
1193 1194 1195
  Lisp_Object val;
  int i, j, len = 0;

1196
  font_assert (FONTP (font));
Kenichi Handa's avatar
Kenichi Handa committed
1197 1198 1199 1200 1201 1202 1203 1204 1205 1206

  for (i = FONT_FOUNDRY_INDEX, j = XLFD_FOUNDRY_INDEX; i <= FONT_REGISTRY_INDEX;
       i++, j++)
    {
      if (i == FONT_ADSTYLE_INDEX)
	j = XLFD_ADSTYLE_INDEX;
      else if (i == FONT_REGISTRY_INDEX)
	j = XLFD_REGISTRY_INDEX;
      val = AREF (font, i);
      if (NILP (val))
1207 1208 1209 1210 1211 1212
	{
	  if (j == XLFD_REGISTRY_INDEX)
	    f[j] = "*-*", len += 4;
	  else
	    f[j] = "*", len += 2;
	}
Kenichi Handa's avatar
Kenichi Handa committed
1213 1214 1215 1216
      else
	{
	  if (SYMBOLP (val))
	    val = SYMBOL_NAME (val);
1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235
	  if (j == XLFD_REGISTRY_INDEX
	      && ! strchr ((char *) SDATA (val), '-'))
	    {
	      /* Change "jisx0208*" and "jisx0208" to "jisx0208*-*".  */
	      if (SDATA (val)[SBYTES (val) - 1] == '*')
		{
		  f[j] = alloca (SBYTES (val) + 3);
		  sprintf (f[j], "%s-*", SDATA (val));
		  len += SBYTES (val) + 3;
		}
	      else
		{
		  f[j] = alloca (SBYTES (val) + 4);
		  sprintf (f[j], "%s*-*", SDATA (val));
		  len += SBYTES (val) + 4;
		}
	    }
	  else
	    f[j] = (char *) SDATA (val), len += SBYTES (val) + 1;
Kenichi Handa's avatar
Kenichi Handa committed
1236 1237 1238 1239 1240 1241
	}
    }

  for (i = FONT_WEIGHT_INDEX, j = XLFD_WEIGHT_INDEX; i <= FONT_WIDTH_INDEX;
       i++, j++)
    {
Kenichi Handa's avatar
Kenichi Handa committed
1242
      val = font_style_symbolic (font, i, 0);
Kenichi Handa's avatar
Kenichi Handa committed
1243 1244 1245 1246
      if (NILP (val))
	f[j] = "*", len += 2;
      else
	{
Kenichi Handa's avatar
Kenichi Handa committed
1247
	  val = SYMBOL_NAME (val);
Kenichi Handa's avatar
Kenichi Handa committed
1248 1249 1250 1251 1252
	  f[j] = (char *) SDATA (val), len += SBYTES (val) + 1;
	}
    }

  val = AREF (font, FONT_SIZE_INDEX);
1253
  font_assert (NUMBERP (val) || NILP (val));
Kenichi Handa's avatar
Kenichi Handa committed
1254 1255
  if (INTEGERP (val))
    {
Kenichi Handa's avatar
Kenichi Handa committed
1256
      i = XINT (val);
1257 1258
      if (i <= 0)
	i = pixel_size;
Kenichi Handa's avatar
Kenichi Handa committed
1259
      if (i > 0)
1260 1261 1262 1263 1264 1265
	{
	  f[XLFD_PIXEL_INDEX] = alloca (22);
	  len += sprintf (f[XLFD_PIXEL_INDEX], "%d-*", i) + 1;
	}
      else
	f[XLFD_PIXEL_INDEX] = "*-*", len += 4;
Kenichi Handa's avatar
Kenichi Handa committed
1266 1267 1268
    }
  else if (FLOATP (val))
    {
Kenichi Handa's avatar
Kenichi Handa committed
1269
      i = XFLOAT_DATA (val) * 10;
1270 1271
      f[XLFD_PIXEL_INDEX] = alloca (12);
      len += sprintf (f[XLFD_PIXEL_INDEX], "*-%d", i) + 1;
Kenichi Handa's avatar
Kenichi Handa committed
1272 1273
    }
  else
1274 1275
    f[XLFD_PIXEL_INDEX] = "*-*", len += 4;

Kenichi Handa's avatar
Kenichi Handa committed
1276
  if (INTEGERP (AREF (font, FONT_DPI_INDEX)))
Kenichi Handa's avatar
Kenichi Handa committed
1277
    {