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% ocp.w
%
% Copyright 2009-2010 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 Lesser General Public
% License for more details.
% You should have received a copy of the GNU General Public License along
% with LuaTeX; if not, see <http://www.gnu.org/licenses/>.
@ @c
#include "ptexlib.h"
static const char _svn_version[] =
"$Id: ocp.w 3584 2010-04-02 17:45:55Z hhenkel $ "
"$URL: http://foundry.supelec.fr/svn/luatex/tags/beta-0.60.0/source/texk/web2c/luatexdir/ocp/ocp.w $";
@ @c
int **ocp_tables;
static int ocp_entries = 0;
int ocp_maxint = 10000000;
@ When the user defines \.{\\ocp\\f}, say, \TeX\ assigns an internal number
to the user's ocp~\.{\\f}. Adding this number to |ocp_id_base| gives the
|eqtb| location of a ``frozen'' control sequence that will always select
the ocp.
@c
internal_ocp_number ocp_ptr; /* largest internal ocp number in use */
void new_ocp(small_number a)
{
pointer u; /* user's ocp identifier */
internal_ocp_number f; /* runs through existing ocps */
str_number t; /* name for the frozen ocp identifier */
boolean external_ocp = false; /* external binary file */
if (job_name == 0)
open_log_file();
/* avoid confusing \.{texput} with the ocp name */
if (cur_chr == 1)
external_ocp = true;
get_r_token();
u = cur_cs;
if (u >= hash_base)
t = cs_text(u);
else
t = maketexstring("OCP");
define(u, set_ocp_cmd, null_ocp);
scan_optional_equals();
scan_file_name();
/* If this ocp has already been loaded, set |f| to the internal
ocp number and |goto common_ending| */
/* When the user gives a new identifier to a ocp that was previously loaded,
the new name becomes the ocp identifier of record. OCP names `\.{xyz}' and
`\.{XYZ}' are considered to be different.
*/
for (f = ocp_base + 1; f <= ocp_ptr; f++) {
if (str_eq_str(ocp_name(f), cur_name)
&& str_eq_str(ocp_area(f), cur_area)) {
flush_str(cur_name);
flush_str(cur_area);
cur_name = ocp_name(f);
cur_area = ocp_area(f);
goto COMMON_ENDING;
}
}
{
char *nam = makecstring(cur_name);
char *are = makecstring(cur_area);
char *ext = makecstring(cur_ext);
f = read_ocp_info(u, nam, are, ext, external_ocp);
free(nam);
free(are);
free(ext);
}
COMMON_ENDING:
equiv(u) = f;
eqtb[ocp_id_base + f] = eqtb[u];
cs_text(ocp_id_base + f) = t;
if (ocp_trace_level == 1) {
tprint_nl("");
tprint_esc("ocp");
print_esc(t);
tprint("=");
print(cur_name);
}
}
@ Before we forget about the format of these tables, let's deal with
$\Omega$'s basic scanning routine related to ocp information.
@c
void scan_ocp_ident(void)
{
internal_ocp_number f;
do {
get_x_token();
} while (cur_cmd == spacer_cmd);
if (cur_cmd == set_ocp_cmd) {
f = cur_chr;
} else {
const char *hlp[] = { "I was looking for a control sequence whose",
"current meaning has been defined by \\ocp.",
NULL
};
back_input();
tex_error("Missing ocp identifier", hlp);
f = null_ocp;
}
cur_val = f;
}
void allocate_ocp_table(int ocp_number, int ocp_size)
{
int i;
if (ocp_entries == 0) {
ocp_tables = (int **) xmalloc(256 * sizeof(int **));
ocp_entries = 256;
} else if ((ocp_number == 256) && (ocp_entries == 256)) {
ocp_tables = xrealloc(ocp_tables, 65536);
ocp_entries = 65536;
}
ocp_tables[ocp_number] =
(int *) xmalloc((unsigned) ((1 + (unsigned) ocp_size) * sizeof(int)));
ocp_tables[ocp_number][0] = ocp_size;
for (i = 1; i <= ocp_size; i++) {
ocp_tables[ocp_number][i] = 0;
}
}
@ @c
static void dump_ocp_table(int ocp_number)
{
dump_things(ocp_tables[ocp_number][0], ocp_tables[ocp_number][0] + 1);
}
void dump_ocp_info(void)
{
int k;
dump_int(123456);
dump_int(ocp_ptr);
for (k = null_ocp; k <= ocp_ptr; k++) {
dump_ocp_table(k);
if (ocp_ptr - ocp_base > 0) {
tprint_nl("\\ocp");
print_esc(cs_text(ocp_id_base + k));
print_char('=');
print_file_name(ocp_name(k), ocp_area(k), get_nullstr());
}
}
dump_int(123456);
if (ocp_ptr - ocp_base > 0) {
print_ln();
print_int(ocp_ptr - ocp_base);
tprint(" preloaded ocp");
if (ocp_ptr != ocp_base + 1)
print_char('s');
}
}
static void undump_ocp_table(int ocp_number)
{
int sizeword;
if (ocp_entries == 0) {
ocp_tables = (int **) xmalloc(256 * sizeof(int **));
ocp_entries = 256;
} else if ((ocp_number == 256) && (ocp_entries == 256)) {
ocp_tables = xrealloc(ocp_tables, 65536);
ocp_entries = 65536;
}
undump_things(sizeword, 1);
ocp_tables[ocp_number] =
(int *) xmalloc((unsigned) ((1 + (unsigned) sizeword) * sizeof(int)));
ocp_tables[ocp_number][0] = sizeword;
undump_things(ocp_tables[ocp_number][1], sizeword);
}
void undump_ocp_info(void)
{
int k;
int x;
undump_int(x);
assert(x == 123456);
undump_int(ocp_ptr);
for (k = null_ocp; k <= ocp_ptr; k++)
undump_ocp_table(k);
undump_int(x);
assert(x == 123456);
}
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