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/*
Copyright (c) 2005-2007 Han The Thanh, <thanh@pdftex.org>
This file is part of pdfTeX.
pdfTeX 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.
pdfTeX 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 pdfTeX; if not, write to the Free Software Foundation, Inc., 51
Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "ptexlib.h"
#include <string.h>
static struct avl_table *sfd_tree = NULL;
#define SFD_BUF_SIZE SMALL_BUF_SIZE
#define sfd_getchar() getc(sfd_file)
#define sfd_eof() feof(sfd_file)
#define sfd_close() xfclose(sfd_file, cur_file_name)
#define sfd_open() open_input(&sfd_file, kpse_sfd_format, FOPEN_RBIN_MODE)
static FILE *sfd_file;
static char sfd_line[SFD_BUF_SIZE];
static subfont_entry *new_subfont_entry(void)
{
int i;
subfont_entry *subfont;
subfont = xtalloc(1, subfont_entry);
subfont->infix = NULL;
for (i = 0; i < 256; i++)
subfont->charcodes[i] = -1; /* unassigned */
subfont->next = NULL;
return subfont;
}
static sfd_entry *new_sfd_entry(void)
{
sfd_entry *sfd;
sfd = xtalloc(1, sfd_entry);
sfd->name = NULL;
sfd->subfont = NULL;
return sfd;
}
static void destroy_sfd_entry(void *pa, void *pb)
{
subfont_entry *p, *q;
sfd_entry *sfd;
sfd = (sfd_entry *) pa;
p = sfd->subfont;
while (p != NULL) {
q = p->next;
xfree(p->infix);
xfree(p);
p = q;
}
xfree(sfd->name);
}
static int comp_sfd_entry(const void *pa, const void *pb, void *p)
{
return strcmp(((const sfd_entry *) pa)->name,
((const sfd_entry *) pb)->name);
}
void sfd_free(void)
{
if (sfd_tree != NULL)
avl_destroy(sfd_tree, destroy_sfd_entry);
}
static void sfd_getline(boolean expect_eof)
{
char *p;
int c;
restart:
if (sfd_eof()) {
if (expect_eof)
return;
else
pdftex_fail("unexpected end of file");
}
p = sfd_line;
do {
c = sfd_getchar();
append_char_to_buf(c, p, sfd_line, SFD_BUF_SIZE);
} while (c != 10);
append_eol(p, sfd_line, SFD_BUF_SIZE);
if (p - sfd_line < 2 || *sfd_line == '#')
goto restart;
}
static sfd_entry *read_sfd(char *sfd_name)
{
void **aa;
sfd_entry *sfd, tmp_sfd;
subfont_entry *sf;
char buf[SMALL_BUF_SIZE], *p;
long int i, j, k;
int n;
/* check whether this sfd has been read */
tmp_sfd.name = sfd_name;
if (sfd_tree == NULL) {
sfd_tree = avl_create(comp_sfd_entry, NULL, &avl_xallocator);
assert(sfd_tree != NULL);
}
sfd = (sfd_entry *) avl_find(sfd_tree, &tmp_sfd);
if (sfd != NULL)
return sfd;
set_cur_file_name(sfd_name);
if (!sfd_open()) {
pdftex_warn("cannot open SFD file for reading");
cur_file_name = NULL;
return NULL;
}
tex_printf("{");
tex_printf("%s", cur_file_name);
sfd = new_sfd_entry();
sfd->name = xstrdup(sfd_name);
while (!sfd_eof()) {
sfd_getline(true);
if (*sfd_line == 10) /* empty line indicating eof */
break;
sf = new_subfont_entry();
sf->next = sfd->subfont;
sfd->subfont = sf;
sscanf(sfd_line, "%s %n", buf, &n);
sf->infix = xstrdup(buf);
p = sfd_line + n; /* skip to the next word */
k = 0;
read_ranges:
for (;;) {
if (*p == '\\') { /* continue on next line */
sfd_getline(false);
p = sfd_line;
goto read_ranges;
} else if (*p == 0) /* end of subfont */
break;
if (sscanf(p, " %li %n", &i, &n) == 0)
pdftex_fail("invalid token:\n%s", p);
p += n;
if (*p == ':') { /* offset */
k = i;
p++;
} else if (*p == '_') { /* range */
if (sscanf(p + 1, " %li %n", &j, &n) == 0)
pdftex_fail("invalid token:\n%s", p);
if (i > j || k + (j - i) > 255)
pdftex_fail("invalid range:\n%s", p);
while (i <= j)
sf->charcodes[k++] = i++;
p += n + 1;
} else /* codepoint */
sf->charcodes[k++] = i;
}
}
sfd_close();
tex_printf("}");
aa = avl_probe(sfd_tree, sfd);
assert(aa != NULL);
return sfd;
}
boolean handle_subfont_fm(fm_entry * fm, int mode)
{
size_t l;
char *p, *q, *r;
sfd_entry *sfd;
subfont_entry *sf;
fm_entry *fm2;
char buf[SMALL_BUF_SIZE];
assert(fm->tfm_name != NULL);
p = fm->tfm_name;
q = strchr(p, '@'); /* search for the first '@' */
if (q == NULL)
return false;
r = strchr(q + 1, '@'); /* search for the second '@' */
if (r == NULL)
return false;
if (q <= p || r <= q + 1 /* prefix or sfd name is empty */
|| r - p != strlen(p) - 1) /* or the second '@' is not the last char yet */
return false;
l = r - (q + 1); /* length of sfd name */
strncpy(buf, q + 1, l);
buf[l] = 0;
check_buf(strlen(buf) + 4, SMALL_BUF_SIZE);
strcat(buf, ".sfd");
sfd = read_sfd(buf);
if (sfd == NULL)
return false;
/* at this point we know fm is a subfont */
set_subfont(fm);
xfree(fm->ps_name);
fm->ps_name = NULL;
/* set default values for PidEid */
if (fm->pid == -1) {
fm->pid = 3;
fm->eid = 1;
}
l = q - p; /* length of base tfm name (prefix) */
for (sf = sfd->subfont; sf != NULL; sf = sf->next) {
strncpy(buf, p, l);
buf[l] = 0;
strcat(buf, sf->infix);
fm2 = new_fm_entry();
fm2->tfm_name = xstrdup(buf);
fm2->ff_name = xstrdup(fm->ff_name);
fm2->type = fm->type;
fm2->pid = fm->pid;
fm2->eid = fm->eid;
fm2->subfont = sf;
if (avl_do_entry(fm2, mode) != 0) /* try to insert the entry */
delete_fm_entry(fm2); /* delete it if failed */
}
delete_fm_entry(fm);
return true;
}
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