Added some new modules

1 files changed, 244 insertions, 0 deletions

diff --git a/Modules/dlmodule.c b/Modules/dlmodule.c
new file mode 100644
index 0000000000..b6457cdf71
--- /dev/null
+++ b/Modules/dlmodule.c
@@ -0,0 +1,244 @@
+/***********************************************************
+Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
+Amsterdam, The Netherlands.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its 
+documentation for any purpose and without fee is hereby granted, 
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in 
+supporting documentation, and that the names of Stichting Mathematisch
+Centrum or CWI not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior permission.
+
+STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
+THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
+FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+******************************************************************/
+
+/* dl module */
+
+#include "allobjects.h"
+#include "modsupport.h"
+
+#include <dlfcn.h>
+
+#ifndef RTLD_LAZY
+#define RTLD_LAZY 1
+#endif
+
+typedef struct {
+	OB_HEAD
+	ANY *dl_handle;
+} dlobject;
+
+staticforward typeobject Dltype;
+
+static object *Dlerror;
+
+static object *
+newdlobject(handle)
+	ANY *handle;
+{
+	dlobject *xp;
+	xp = NEWOBJ(dlobject, &Dltype);
+	if (xp == NULL)
+		return NULL;
+	xp->dl_handle = handle;
+	return (object *)xp;
+}
+
+static void
+dl_dealloc(xp)
+	dlobject *xp;
+{
+	if (xp->dl_handle != NULL)
+		dlclose(xp->dl_handle);
+	DEL(xp);
+}
+
+static object *
+dl_close(xp, args)
+	dlobject *xp;
+	object *args;
+{
+	if (!getargs(args, ""))
+		return NULL;
+	if (xp->dl_handle != NULL) {
+		dlclose(xp->dl_handle);
+		xp->dl_handle = NULL;
+	}
+	INCREF(None);
+	return None;
+}
+
+static object *
+dl_sym(xp, args)
+	dlobject *xp;
+	object *args;
+{
+	char *name;
+	ANY *func;
+	if (!getargs(args, "s", &name))
+		return NULL;
+	func = dlsym(xp->dl_handle, name);
+	if (func == NULL) {
+		INCREF(None);
+		return None;
+	}
+	return newintobject((long)func);
+}
+
+static object *
+dl_call(xp, args)
+	dlobject *xp;
+	object *args; /* (varargs) */
+{
+	object *name;
+	long (*func)();
+	long alist[10];
+	long res;
+	int i;
+	int n = gettuplesize(args);
+	if (n < 1) {
+		err_setstr(TypeError, "at least a name is needed");
+		return NULL;
+	}
+	name = gettupleitem(args, 0);
+	if (!is_stringobject(name)) {
+		err_setstr(TypeError, "function name must be a string");
+		return NULL;
+	}
+	func = dlsym(xp->dl_handle, getstringvalue(name));
+	if (func == NULL) {
+		err_setstr(ValueError, dlerror());
+		return NULL;
+	}
+	if (n-1 > 10) {
+		err_setstr(TypeError, "too many arguments (max 10)");
+		return NULL;
+	}
+	for (i = 1; i < n; i++) {
+		object *v = gettupleitem(args, i);
+		if (is_intobject(v))
+			alist[i-1] = getintvalue(v);
+		else if (is_stringobject(v))
+			alist[i-1] = (long)getstringvalue(v);
+		else if (v == None)
+			alist[i-1] = (long) ((char *)NULL);
+		else {
+			err_setstr(TypeError,
+				   "arguments must be int, string or None");
+			return NULL;
+		}
+	}
+	for (; i <= 10; i++)
+		alist[i-1] = 0;
+	res = (*func)(alist[0], alist[1], alist[2], alist[3], alist[4],
+		      alist[5], alist[6], alist[7], alist[8], alist[9]);
+	return newintobject(res);
+}
+
+static struct methodlist dlobject_methods[] = {
+	{"call",	(method)dl_call,	1 /* varargs */},
+	{"sym", 	(method)dl_sym},
+	{"close",	(method)dl_close},
+	{NULL,  	NULL}			/* Sentinel */
+};
+
+static object *
+dl_getattr(xp, name)
+	dlobject *xp;
+	char *name;
+{
+	return findmethod(dlobject_methods, (object *)xp, name);
+}
+
+
+static typeobject Dltype = {
+	OB_HEAD_INIT(&Typetype)
+	0,			/*ob_size*/
+	"dl",			/*tp_name*/
+	sizeof(dlobject),	/*tp_basicsize*/
+	0,			/*tp_itemsize*/
+	/* methods */
+	(destructor)dl_dealloc, /*tp_dealloc*/
+	0,			/*tp_print*/
+	(getattrfunc)dl_getattr,/*tp_getattr*/
+	0,			/*tp_setattr*/
+	0,			/*tp_compare*/
+	0,			/*tp_repr*/
+	0,			/*tp_as_number*/
+	0,			/*tp_as_sequence*/
+	0,			/*tp_as_mapping*/
+	0,			/*tp_hash*/
+};
+
+static object *
+dl_open(self, args)
+	object *self;
+	object *args;
+{
+	char *name;
+	int mode;
+	ANY *handle;
+	if (getargs(args, "z", &name))
+		mode = RTLD_LAZY;
+	else {
+		err_clear();
+		if (!getargs(args, "(zi)", &name, &mode))
+			return NULL;
+#ifndef RTLD_NOW
+		if (mode != RTLD_LAZY) {
+			err_setstr(ValueError, "mode must be 1");
+			return NULL;
+		}
+#endif
+	}
+	handle = dlopen(name, mode);
+	if (handle == NULL) {
+		err_setstr(Dlerror, dlerror());
+		return NULL;
+	}
+	return newdlobject(handle);
+}
+
+static struct methodlist dl_methods[] = {
+	{"open",	dl_open},
+	{NULL,		NULL}		/* sentinel */
+};
+
+void
+initdl()
+{
+	object *m, *d, *x;
+
+	if (sizeof(int) != sizeof(long) ||
+	    sizeof(long) != sizeof(char *))
+		fatal(
+ "module dl requires sizeof(int) == sizeof(long) == sizeof(char*)");
+
+	/* Create the module and add the functions */
+	m = initmodule("dl", dl_methods);
+
+	/* Add some symbolic constants to the module */
+	d = getmoduledict(m);
+	Dlerror = x = newstringobject("dl.error");
+	dictinsert(d, "error", x);
+	x = newintobject((long)RTLD_LAZY);
+	dictinsert(d, "RTLD_LAZY", x);
+#ifdef RTLD_NOW
+	x = newintobject((long)RTLD_NOW);
+	dictinsert(d, "RTLD_NOW", x);
+#endif
+
+	/* Check for errors */
+	if (err_occurred())
+		fatal("can't initialize module dl");
+}