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/* mp4h -- A macro processor for HTML documents
Copyright 2000-2003, Denis Barbier
All rights reserved.
This program 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, or (at your option)
any later version.
This program is a work based on GNU m4 version 1.4n. Below is the
original copyright.
*/
/* GNU m4 -- A simple macro processor
Copyright (C) 1998 Free Software Foundation, Inc.
This program 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, or (at your option)
any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#define MP4H_MODULE
#include <mp4h.h>
#undef MP4H_MODULE
#define XP_UNIX
#include <js/jsapi.h>
#define mp4h_macro_table mozjs_LTX_mp4h_macro_table
#define mp4h_init_module mozjs_LTX_mp4h_init_module
#define mp4h_finish_module mozjs_LTX_mp4h_finish_module
DECLARE(mozjs_javascript);
#undef DECLARE
/* The table of builtins defined by this module - just one */
builtin mp4h_macro_table[] =
{
/* name container expand function
attributes */
{ "javascript", TRUE, TRUE, mozjs_javascript },
{ 0, FALSE, FALSE, 0 },
};
static JSRuntime *rt;
static JSContext *cx;
static JSObject *global;
static JSClass global_class = {
"global",0,
JS_PropertyStub,JS_PropertyStub,JS_PropertyStub,JS_PropertyStub,
JS_EnumerateStub,JS_ResolveStub,JS_ConvertStub,JS_FinalizeStub
};
/* obs holds a pointer to the current obstack for output. It is
initialised from the argument to the javascript tag. */
static struct obstack *javascript_obs;
static JSBool
my_print(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
{
JSString *jstr;
char *s;
jstr = JS_ValueToString(cx, argv[0]);
s = JS_GetStringBytes(jstr);
obstack_grow(javascript_obs, s, strlen(s));
obstack_1grow(javascript_obs, '\n');
return JS_TRUE;
}
static JSFunctionSpec my_functions[] = {
{"print", my_print, 1},
{0}
};
void
mp4h_init_module(struct obstack *obs)
{
rt = JS_NewRuntime(0x100000);
if (!rt)
{
MP4HERROR ((warning_status, 0,
_("Warning:%s:%d: could'nt runtime environment\n%s"),
CURRENT_FILE_LINE));
return;
}
cx = JS_NewContext(rt, 0x1000);
if (!cx)
{
MP4HERROR ((warning_status, 0,
_("Warning:%s:%d: could'nt create context\n%s"),
CURRENT_FILE_LINE));
return;
}
global = JS_NewObject(cx, &global_class, NULL, NULL);
if (!global)
{
MP4HERROR ((warning_status, 0,
_("Warning:%s:%d: could'nt create global classes\n%s"),
CURRENT_FILE_LINE));
return;
}
JS_InitStandardClasses (cx, global);
JS_DefineFunctions(cx, global, my_functions);
}
void
mp4h_finish_module(void)
{
JS_DestroyContext(cx);
JS_Finish(rt);
}
/* Evaluates javascript commands */
static void
mozjs_javascript (MP4H_BUILTIN_ARGS)
{
jsval rval;
JSBool ok;
char *script;
javascript_obs = obs;
script = xstrdup(ARGBODY);
remove_special_chars (script, TRUE);
ok = JS_EvaluateScript(cx, global, script, strlen(script),
CURRENT_FILE_LINE, &rval);
if (!ok)
{
MP4HERROR ((warning_status, 0,
_("Warning:%s:%d: execution of JavaScript failed:\n"),
CURRENT_FILE_LINE));
}
xfree ((voidstar) script);
}
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