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/*
Copyright (c) 1996-2006 Taco Hoekwater <taco@luatex.org>
This file is part of LuaTeX.
LuaTeX is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
LuaTeX 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
along with LuaTeX; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
$Id: dofont.c 1013 2008-02-14 00:09:02Z oneiros $
*/
#include "ptexlib.h"
#include "luatex-api.h"
#define TIMERS 0
#if TIMERS
#include <sys/time.h>
#endif
/* a bit more interfacing is needed for proper error reporting */
static char *
font_error_message (pointer u, char *nom, scaled s) {
char *str = xmalloc(256);
char *c = makecstring(zget_cs_text(u));
char *extra = "metric data not found or bad";
if (s>=0 ) {
snprintf(str,255,"Font \\%s=%s at %gpt not loadable: %s", c, nom, (double)s/65536, extra);
} else if (s!=-1000) {
snprintf(str,255,"Font \\%s=%s scaled %d not loadable: %s", c, nom, (int)(-s), extra);
} else {
snprintf(str,255,"Font \\%s=%s not loadable: %s", c, nom, extra);
}
return str;
}
static int
do_define_font (integer f, char *cnom, char *caire, scaled s, integer natural_dir) {
boolean res; /* was the callback successful? */
integer callback_id;
char *cnam;
#if TIMERS
struct timeval tva;
struct timeval tvb;
double tvdiff;
#endif
int r;
res = 0;
callback_id=callback_defined(define_font_callback);
if (callback_id>0) {
if (caire == NULL || strlen(caire)==0) {
cnam = xstrdup(cnom);
} else {
cnam = xmalloc(strlen(cnom)+strlen(caire)+2);
sprintf(cnam,"%s/%s",caire,cnom);
}
#if TIMERS
gettimeofday(&tva,NULL);
#endif
callback_id = run_and_save_callback(callback_id,"Sdd->",cnam,s,f);
#if TIMERS
gettimeofday(&tvb,NULL);
tvdiff = tvb.tv_sec*1000000.0;
tvdiff += (double)tvb.tv_usec;
tvdiff -= (tva.tv_sec*1000000.0);
tvdiff -= (double)tva.tv_usec;
tvdiff /= 1000000;
fprintf(stdout,"\ncallback('define_font',%s,%i): %f seconds\n", cnam,f,tvdiff);
#endif
free(cnam);
if (callback_id>0) { /* success */
luaL_checkstack(Luas[0],1,"out of stack space");
lua_rawgeti(Luas[0],LUA_REGISTRYINDEX, callback_id);
if (lua_istable(Luas[0],-1)) {
#if TIMERS
gettimeofday(&tva,NULL);
#endif
res = font_from_lua(Luas[0],f);
destroy_saved_callback (callback_id);
#if TIMERS
gettimeofday(&tvb,NULL);
tvdiff = tvb.tv_sec*1000000.0;
tvdiff += (double)tvb.tv_usec;
tvdiff -= (tva.tv_sec*1000000.0);
tvdiff -= (double)tva.tv_usec;
tvdiff /= 1000000;
fprintf(stdout,"font_from_lua(%s,%i): %f seconds\n", font_name(f),f,tvdiff);
#endif
lua_pop(Luas[0],1);
} else if (lua_isnumber(Luas[0],-1)) {
r = lua_tonumber(Luas[0],-1);
destroy_saved_callback (callback_id);
delete_font(f);
lua_pop(Luas[0],1);
return r;
} else {
lua_pop(Luas[0],1);
delete_font(f);
return 0;
}
}
} else {
res = read_tfm_info(f,cnom,caire,s);
if (res) {
set_hyphen_char(f,get_default_hyphen_char());
set_skew_char(f,get_default_skew_char());
}
}
if (res) {
do_vf(f);
set_font_natural_dir(f,natural_dir);
return f;
} else {
delete_font(f);
return 0;
}
}
int
read_font_info(pointer u, strnumber nom, strnumber aire, scaled s,
integer natural_dir) {
integer f;
char *cnom, *caire = NULL;
char *msg;
cnom = xstrdup(makecstring(nom));
if (aire != 0)
caire = xstrdup(makecstring(aire));
f = new_font();
if ((f = do_define_font(f, cnom,caire,s,natural_dir))) {
if (caire != NULL) free(caire);
free(cnom);
return f;
} else {
char *help[] = {"I wasn't able to read the size data for this font,",
"so I will ignore the font specification.",
"[Wizards can fix TFM files using TFtoPL/PLtoTF.]",
"You might try inserting a different font spec;",
"e.g., type `I\font<same font id>=<substitute font name>'.",
NULL } ;
if(!get_suppress_fontnotfound_error()) {
msg = font_error_message(u, cnom, s);
tex_error(msg,help);
free(msg);
}
if (caire != NULL) free(caire);
free(cnom);
return 0;
}
}
/* TODO This function is a placeholder. There can easily appears holes in
the |font_tables| array, and we could attempt to reuse those
*/
int
find_font_id (char *nom, char *aire, scaled s) {
integer f;
f = new_font();
if ((f = do_define_font(f, nom, aire,s,-1))) {
return f;
} else {
return 0;
}
}
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