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lang-python.c
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/*
* Copyright Neil Brown ©2015-2023 <[email protected]>
* May be distributed under terms of GPLv2 - see file:COPYING
*
* Python3 bindings for edlib.
* An edlib command "global-load-modules:python" will read and execute
* a python module.
* It must "import edlib" and it can use "edlib.editor" to get the editor
* instance.
*
* Types available are:
* edlib.pane - a generic pane. These form a tree of which edlib.editor
* is the root.
* get/set operations for x,y,z,w,h,cx,cy as numbers
* changes x,y,w,h call pane_resize()
* z cannot be changed (only pane_register() does that )
* cx,cy can be changed freely.
* 'parent' and 'focus' can be read but not written
* method for 'children' provides first child as an iterator.
* method abs() converts relative co-ords to absolute.
* rel() converts absolute co-ords to relative.
* edlib.mark - these reference locations in a document. The document is
* not directly accessible, it can only be accessed through
* a pane (which may translate events and results).
* get/set for viewnum (cannot be set)
* iterator for both 'all' and 'view' lists.
* no methods yet.
*
* edlib.comm - a command which can be used to invoke code in other
* module editors. These look like any other python
* callable. They cannot be explicitly created, but can
* be received from and passed to other commands.
*
*/
#ifdef __CHECKER__
/* Need to define stuff that pyconfig needs */
#define __linux__
#define __x86_64__
#define __LP64__
//#define PyType_HasFeature __PyType_HasFeature
#include <Python.h>
#undef PyType_HasFeature __PyType_HasFeature
int PyType_HasFeature(PyTypeObject *type, unsigned long feature);
#undef Py_INCREF
#define Py_INCREF(op) (0)
#undef Py_DECREF
#define Py_DECREF(op) (0)
#undef Py_XDECREF
#define Py_XDECREF(op) (0)
#undef Py_IS_TYPE
#define Py_IS_TYPE(ob, type) (ob == (void*)type)
#else /* CHECKER */
#include <Python.h>
#endif
struct Mark;
#define MARK_DATA_PTR struct Mark
#define PRIVATE_DOC_REF
struct doc_ref {
PyObject *c;
int o;
};
#include <fcntl.h>
#include <signal.h>
#define DOC_DATA_TYPE struct python_doc
#define PANE_DATA_PTR_TYPE struct Pane *
struct Pane;
#include "core.h"
#include "misc.h"
#include "rexel.h"
struct python_doc {
struct doc doc;
struct pydoc *pdoc;
};
#include "core-pane.h"
#define SAFE_CI {.key=safe_cast NULL,\
.home=safe_cast NULL,\
.focus=safe_cast NULL,\
.comm=safe_cast NULL,\
}
static PyObject *Edlib_CommandFailed;
static PyObject *EdlibModule;
static struct pane *ed_pane;
static char *module_dir;
static char *python_as_string(PyObject *s, PyObject **tofree safe);
/* Python commands visible to edlib are wrapped in
* the python_command. There is only one per callback,
* so that edlib code can compare for equalty.
*/
struct python_command {
struct command c;
PyObject *callable;
struct list_head lst;
};
static LIST_HEAD(exported_commands);
DEF_CMD(python_call);
DEF_CMD(python_pane_call);
DEF_CMD(python_doc_call);
static void python_free_command(struct command *c safe);
static struct python_command *export_callable(PyObject *callable safe,
PyObject *nm)
{
struct python_command *c;
const char *name = NULL;
int len;
if (nm && PyUnicode_Check(nm))
name = PyUnicode_AsUTF8(nm);
if (!name)
name = "";
len = strlen(name);
list_for_each_entry(c, &exported_commands, lst)
if (c->callable == callable) {
command_get(&c->c);
return c;
}
c = malloc(sizeof(*c));
c->c = python_call;
c->c.free = python_free_command;
c->c.refcnt = 0;
if (strcmp(name, "handle_close") == 0 ||
(len > 10 &&
strcmp(name+len-10, "_closed_ok") == 0))
c->c.closed_ok = 1;
else
c->c.closed_ok = 0;
command_get(&c->c);
Py_INCREF(callable);
c->callable = callable;
list_add(&c->lst, &exported_commands);
return c;
}
typedef struct Pane {
PyObject_HEAD;
struct pane *pane;
struct command cmd;
struct map *map;
int map_init;
} Pane;
static PyTypeObject PaneType;
typedef struct {
PyObject_HEAD;
struct pane *pane;
} PaneIter;
static PyTypeObject PaneIterType;
typedef struct pydoc {
PyObject_HEAD;
struct pane *pane;
struct command cmd;
struct map *map;
int map_init;
} Doc;
static PyTypeObject DocType;
typedef struct Mark {
PyObject_HEAD;
struct mark *mark;
} Mark;
static PyTypeObject MarkType;
static void mark_refcnt(struct mark *m safe, int inc);
typedef struct {
PyObject_HEAD;
struct command *comm;
} Comm;
static PyTypeObject CommType;
static inline bool pane_valid(Pane *p safe)
{
if (p->pane && p->pane->handle)
return True;
PyErr_SetString(PyExc_TypeError, "Pane has been freed");
return False;
}
static inline bool doc_valid(Doc *p safe)
{
if (p->pane && p->pane->handle)
return True;
PyErr_SetString(PyExc_TypeError, "Doc pane has been freed");
return False;
}
static bool get_cmd_info(struct cmd_info *ci safe, PyObject *args safe, PyObject *kwds,
PyObject **s1 safe, PyObject **s2 safe);
static int in_pane_frompane = 0;
static inline PyObject *safe Pane_Frompane(struct pane *p)
{
Pane *pane;
if (p && p->handle && p->handle->func == python_pane_call.func) {
pane = p->data;
Py_INCREF(pane);
} else if (p && p->handle && p->handle->func == python_doc_call.func) {
struct python_doc *pd = p->doc_data;
Doc *pdoc = pd->pdoc;
pane = (Pane*)pdoc;
Py_INCREF(pane);
} else {
in_pane_frompane = 1;
pane = (Pane *)PyObject_CallObject((PyObject*)&PaneType, NULL);
in_pane_frompane = 0;
if (!pane)
;
else if (p)
pane->pane = pane_get(p);
else
pane->pane = p;
}
return (PyObject*)pane;
}
static inline PyObject *safe Mark_Frommark(struct mark *m safe)
{
Mark *mark;
if (mark_valid(m) && m->mtype == &MarkType && m->mdata) {
/* This is a vmark, re-use the PyObject */
Py_INCREF(m->mdata);
return (PyObject*)m->mdata;
}
mark = (Mark *)PyObject_CallObject((PyObject*)&MarkType, NULL);
if (mark && mark_valid(m))
mark->mark = m;
return (PyObject*)mark;
}
static inline PyObject *safe Comm_Fromcomm(struct command *c safe)
{
Comm *comm = (Comm *)PyObject_CallObject((PyObject*)&CommType, NULL);
if (comm)
comm->comm = command_get(c);
return (PyObject*)comm;
}
static PyObject *py_LOG(PyObject *self, PyObject *args);
static void PyErr_LOG(void)
{
/* cribbed from https://groups.google.com/forum/#!topic/comp.lang.python/khLrxC6EOKc */
char *errorMsg = NULL;
PyObject *modIO = NULL;
PyObject *modTB = NULL;
PyObject *obFuncStringIO = NULL;
PyObject *obIO = NULL;
PyObject *obFuncTB = NULL;
PyObject *argsTB = NULL;
PyObject *obResult = NULL;
PyObject *tofree = NULL;
PyObject *exc_typ, *exc_val, *exc_tb;
if (!PyErr_Occurred())
return;
PyErr_Fetch(&exc_typ, &exc_val, &exc_tb);
PyErr_NormalizeException(&exc_typ, &exc_val, &exc_tb);
if (exc_tb)
PyException_SetTraceback(exc_val, exc_tb);
/* Import the modules we need - StringIO and traceback */
errorMsg = "Can't import io";
modIO = PyImport_ImportModule("io");
if (!modIO)
goto out;
errorMsg = "Can't import traceback";
modTB = PyImport_ImportModule("traceback");
if (!modTB)
goto out;
/* Construct a cStringIO object */
errorMsg = "Can't find io.StringIO";
obFuncStringIO = PyObject_GetAttrString(modIO, "StringIO");
if (!obFuncStringIO)
goto out;
errorMsg = "io.StringIO() failed";
obIO = PyObject_CallObject(obFuncStringIO, NULL);
if (!obIO)
goto out;
/* Get the traceback.print_exception function, and call it. */
errorMsg = "Can't find traceback.print_exception";
obFuncTB = PyObject_GetAttrString(modTB, "print_exception");
if (!obFuncTB)
goto out;
errorMsg = "can't make print_exception arguments";
argsTB = Py_BuildValue("OOOOO",
exc_typ ? exc_typ : Py_None,
exc_val ? exc_val : Py_None,
exc_tb ? exc_tb : Py_None,
Py_None,
obIO);
if (!argsTB)
goto out;
errorMsg = "traceback.print_exception() failed";
obResult = PyObject_CallObject(obFuncTB, argsTB);
if (!obResult) {
PyErr_Print();
goto out;
}
/* Now call the getvalue() method in the StringIO instance */
Py_DECREF(obFuncStringIO);
errorMsg = "cant find getvalue function";
obFuncStringIO = PyObject_GetAttrString(obIO, "getvalue");
if (!obFuncStringIO)
goto out;
Py_XDECREF(obResult);
errorMsg = "getvalue() failed.";
obResult = PyObject_CallObject(obFuncStringIO, NULL);
if (!obResult)
goto out;
/* And it should be a string all ready to go - report it. */
errorMsg = python_as_string(obResult, &tofree);;
LOG("Python error:\n%s", errorMsg);
if (errorMsg &&
(!ed_pane ||
call("editor:notify:Message:broadcast",ed_pane, 0, NULL,
"Python Error - see log") <= 0))
/* Failed to alert anyone - write to stderr */
fwrite(errorMsg, 1, strlen(errorMsg), stderr);
Py_XDECREF(tofree);
errorMsg = NULL;
out:
if (errorMsg)
LOG(errorMsg);
Py_XDECREF(modIO);
Py_XDECREF(modTB);
Py_XDECREF(obFuncStringIO);
Py_XDECREF(obIO);
Py_XDECREF(obFuncTB);
Py_XDECREF(argsTB);
Py_XDECREF(obResult);
Py_XDECREF(exc_typ);
Py_XDECREF(exc_val);
Py_XDECREF(exc_tb);
}
DEF_CMD(python_load_module)
{
const char *name = ci->str;
int fd;
long long size;
char *code;
char buf[PATH_MAX];
char buf2[PATH_MAX];
PyObject *builtins, *compile, *args, *bytecode;
if (!name)
return Enoarg;
snprintf(buf, sizeof(buf), "%s/python/%s.py", module_dir, name);
fd = open(buf, O_RDONLY);
if (fd < 0)
return Efail;
size = lseek(fd, 0, SEEK_END);
lseek(fd, 0, SEEK_SET);
code = malloc(size+1);
if (!code) {
close(fd);
return Efail;
}
size = read(fd, code, size);
close(fd);
if (size <= 0) {
free(code);
return Efail;
}
code[size] = 0;
LOG("Loading python module %s from %s", name, buf);
builtins = PyEval_GetBuiltins();
compile = PyDict_GetItemString(builtins, "compile");
args = safe_cast Py_BuildValue("(sss)", code, buf, "exec");
bytecode = PyObject_Call(compile, args, NULL);
Py_DECREF(args);
free(code);
if (bytecode == NULL) {
PyErr_LOG();
return Efail;
}
snprintf(buf2, sizeof(buf2), "edlib.%s", name);
if (PyImport_ExecCodeModule(buf2, bytecode) == NULL)
PyErr_LOG();
Py_DECREF(bytecode);
return 1;
}
static PyObject *safe python_string(const char *s safe, int len)
{
const char *c = s;
const char *e = NULL;
wint_t wch;
if (len >= 0)
e = s + len;
while ((!e || c < e) && *c && !(*c & 0x80))
c++;
while ((wch = get_utf8(&c, e)) != WEOF)
if (wch == WERR || wch > 0x10FFFF)
break;
return safe_cast PyUnicode_DecodeUTF8(s, c - s, NULL);
}
static char *python_as_string(PyObject *s, PyObject **tofree safe)
{
if (s && PyUnicode_Check(s)) {
s = PyUnicode_AsUTF8String(s);
*tofree = s;
}
if (s && PyBytes_Check(s)) {
char *ret = PyBytes_AsString(s);
unsigned char *r = (unsigned char*)ret;
if (r && r[0] == 0xef && r[1] == 0xbb && r[2] == 0xbf)
/* UTF-8 Byte Order Mark */
return ret+3;
else
return ret;
}
return NULL;
}
static int dict_add(PyObject *kwds, char *name, PyObject *val)
{
if (!val)
return 0;
PyDict_SetItemString(kwds, name, val);
Py_DECREF(val);
return 1;
}
static bool python_running;
DEF_CB(handle_alarm)
{
if (python_running)
PyErr_SetInterrupt();
return 1;
}
REDEF_CB(python_call)
{
struct python_command *pc = container_of(ci->comm, struct python_command, c);
PyObject *ret = NULL, *args, *kwds, *str;
int rv = 1;
bool unterminated = False;
int klen = strlen(ci->key);
if (klen > 13 &&
strcmp(ci->key + klen - 13, " unterminated") == 0)
unterminated = True;
args = safe_cast Py_BuildValue("(s)", ci->key);
kwds = PyDict_New();
rv = rv && dict_add(kwds, "home", Pane_Frompane(ci->home));
rv = rv && dict_add(kwds, "focus",
Pane_Frompane(ci->focus));
rv = rv && dict_add(kwds, "mark",
ci->mark ? Mark_Frommark(ci->mark):
(Py_INCREF(Py_None), Py_None));
rv = rv && dict_add(kwds, "mark2",
ci->mark2 ? Mark_Frommark(ci->mark2):
(Py_INCREF(Py_None), Py_None));
if (ci->str)
str = python_string(ci->str, unterminated ? ci->num2 : -1);
else {
str = Py_None;
Py_INCREF(Py_None);
}
if (str) {
dict_add(kwds, "str", str);
dict_add(kwds, "str1", str);
Py_INCREF(str);
} else {
rv = 0;
}
rv = rv && dict_add(kwds, "str2",
ci->str2 ? python_string(ci->str2, -1):
(Py_INCREF(Py_None), safe_cast Py_None));
rv = rv && dict_add(kwds, "comm", Comm_Fromcomm(ci->comm));
rv = rv && dict_add(kwds, "comm2",
ci->comm2 ? Comm_Fromcomm(ci->comm2):
(Py_INCREF(Py_None), Py_None));
rv = rv && dict_add(kwds, "num",
Py_BuildValue("i", ci->num));
rv = rv && dict_add(kwds, "rpt_num",
Py_BuildValue("i", RPT_NUM(ci)));
rv = rv && dict_add(kwds, "num2",
Py_BuildValue("i", ci->num2));
rv = rv && dict_add(kwds, "xy",
Py_BuildValue("ii", ci->x, ci->y));
if (rv && pc->callable) {
python_running = True;
ret = PyObject_Call(pc->callable, args, kwds);
python_running = False;
}
Py_DECREF(args);
Py_DECREF(kwds);
if (!ret) {
PyErr_LOG();
/* FIXME cancel error?? */
return Efail;
}
if (ret == Py_None)
rv = Efallthrough;
else if (PyLong_Check(ret))
rv = PyLong_AsLong(ret);
else if (PyBool_Check(ret))
rv = (ret == Py_True) ? 1 : Efalse;
else if (PyUnicode_Check(ret) && PyUnicode_GET_LENGTH(ret) >= 1)
rv = CHAR_RET(PyUnicode_READ_CHAR(ret, 0));
else
rv = 1;
Py_DECREF(ret);
return rv;
}
REDEF_CMD(python_doc_call)
{
int rv = python_pane_call_func(ci);
if (rv == Efallthrough)
rv = key_lookup(doc_default_cmd, ci);
return rv;
}
static void do_map_init(Pane *self safe)
{
int i;
PyObject *l = PyObject_Dir((PyObject*)self);
int n;
if (!self->map || !self->pane || !l)
return;
n = PyList_Size(l);
/* First add the ranges, so individuals can over-ride them */
for (i = 0; i < n ; i++) {
PyObject *e = PyList_GetItem(l, i);
PyObject *m = PyObject_GetAttr((PyObject*)self, e);
if (m && PyMethod_Check(m)) {
PyObject *doc = PyObject_GetAttrString(m, "__doc__");
if (doc && doc != Py_None) {
PyObject *tofree = NULL;
char *docs = python_as_string(doc, &tofree);
if (docs &&
strstarts(docs, "handle-range") &&
docs[12]) {
char sep = docs[12];
char *s1 = strchr(docs+13, sep);
char *s2 = s1 ? strchr(s1+1, sep) : NULL;
if (s2) {
char *a = strndup(docs+13, s1-(docs+13));
char *b = strndup(s1+1, s2-(s1+1));
struct python_command *comm =
export_callable(m, e);
key_add_range(self->map, a, b,
&comm->c);
free(a); free(b);
command_put(&comm->c);
}
}
if (docs &&
strstarts(docs, "handle-prefix:")) {
char *a = strconcat(self->pane, docs+14);
char *b = strconcat(self->pane,
a, "\xFF\xFF\xFF\xFF");
struct python_command *comm =
export_callable(m, e);
key_add_range(self->map, a, b,
&comm->c);
command_put(&comm->c);
}
Py_XDECREF(tofree);
}
Py_XDECREF(doc);
}
Py_XDECREF(m);
}
/* Now add the non-ranges */
for (i = 0; i < n ; i++) {
PyObject *e = PyList_GetItem(l, i);
PyObject *m = PyObject_GetAttr((PyObject*)self, e);
if (m && PyMethod_Check(m)) {
PyObject *doc = PyObject_GetAttrString(m, "__doc__");
char *docs;
PyObject *tofree = NULL;
if (doc && doc != Py_None &&
(docs = python_as_string(doc, &tofree)) != NULL) {
if (strstarts(docs, "handle:")) {
struct python_command *comm =
export_callable(m, e);
key_add(self->map, docs+7, &comm->c);
command_put(&comm->c);
}
if (strstarts(docs, "handle-list") &&
docs[11]) {
char sep = docs[11];
char *s1 = docs + 12;
while (s1 && *s1 && *s1 != sep) {
struct python_command *comm =
export_callable(m, e);
char *a;
char *s2 = strchr(s1, sep);
if (s2) {
a = strndup(s1, s2-s1);
s1 = s2+1;
} else {
a = strdup(s1);
s1 = NULL;
}
key_add(self->map, a, &comm->c);
free(a);
command_put(&comm->c);
}
}
}
Py_XDECREF(tofree);
Py_XDECREF(doc);
}
Py_XDECREF(m);
}
Py_XDECREF(l);
self->map_init = 1;
}
REDEF_CB(python_pane_call)
{
Pane *home = container_of(ci->comm, Pane, cmd);
if (!home || !home->map)
return Efallthrough;
if (!home->map_init)
do_map_init(home);
return key_lookup(home->map, ci);
}
static Pane *pane_new(PyTypeObject *type safe, PyObject *args, PyObject *kwds)
{
Pane *self;
self = (Pane *)type->tp_alloc(type, 0);
if (self) {
self->pane = NULL;
}
return self;
}
static Doc *Doc_new(PyTypeObject *type safe, PyObject *args, PyObject *kwds)
{
Doc *self;
self = (Doc *)type->tp_alloc(type, 0);
if (self) {
self->pane = NULL;
}
return self;
}
static void python_pane_free(struct command *c safe)
{
Pane *p = container_of(c, Pane, cmd);
struct pane *pn = p->pane;
/* pane has been closed */
p->pane = NULL;
if (p->map)
key_free(p->map);
p->map = NULL;
if (pn && PyObject_TypeCheck(p, &DocType))
doc_free(&pn->doc_data->doc, safe_cast pn);
if (pn)
pane_put(pn);
Py_DECREF(p);
}
DEF_CMD_CLOSED(python_close_mark)
{
struct mark *m = ci->mark;
if (m && m->viewnum >= 0 && m->mtype == &MarkType && m->mdata) {
Mark *M = m->mdata;
m->mdata = NULL;
m->mtype = NULL;
M->mark = NULL;
Py_DECREF(M);
}
return 1;
}
static int do_Pane_init(Pane *self safe, PyObject *args, PyObject *kwds,
Pane **parentp safe,
int *zp safe)
{
int ret;
static const char *keywords[] = {"parent", "z", NULL};
if (self->pane) {
PyErr_SetString(PyExc_TypeError, "Pane already initialised");
return -1;
}
if (in_pane_frompane)
/* An internal Pane_Frompane call - it will set .pane,
* and we don't want a .handler.
*/
return 0;
/* Pane(parent=None, z=0) */
ret = PyArg_ParseTupleAndKeywords(args, kwds, "O!|i", (char**)keywords,
&PaneType, parentp, zp);
if (ret <= 0)
return -1;
self->map = key_alloc();
key_add(self->map, "Close:mark", &python_close_mark);
self->cmd = python_pane_call;
self->cmd.closed_ok = 1;
self->cmd.free = python_pane_free;
if (self->ob_base.ob_type)
self->cmd.name = self->ob_base.ob_type->tp_name;
return 1;
}
static int Pane_init(Pane *self safe, PyObject *args, PyObject *kwds)
{
Pane *parent = NULL;
int z = 0;
int ret = do_Pane_init(self, args, kwds, &parent, &z);
if (ret <= 0)
return ret;
if (!parent || !parent->pane)
return -1;
/* The pane holds a reference to the Pane through the ->handle
* function
*/
Py_INCREF(self);
self->pane = pane_register(parent->pane, z, &self->cmd, self);
if (!self->pane)
return -1;
pane_get(self->pane);
return 0;
}
static int Doc_init(Doc *self, PyObject *args, PyObject *kwds)
{
Pane *parent = NULL;
struct python_doc *pd;
int z = 0;
int ret = do_Pane_init((Pane*safe)self, args, kwds, &parent, &z);
if (ret <= 0)
return ret;
if (!self || !parent || !parent->pane)
return -1;
self->cmd.func = python_doc_call_func;
self->pane = doc_register(parent->pane, &self->cmd);
if (self->pane) {
pane_get(self->pane);
pd = self->pane->doc_data;
pd->pdoc = self;
pd->doc.refcnt = mark_refcnt;
}
return 0;
}
static inline void do_free(PyObject *ob safe)
{
if (ob->ob_type && ob->ob_type->tp_free)
ob->ob_type->tp_free(ob);
}
DEF_CMD(python_null_call)
{
return 1;
}
static void python_pane_free_final(struct command *c safe)
{
Pane *p = container_of(c, Pane, cmd);
if (p->pane)
pane_put(p->pane);
python_pane_free(c);
do_free((PyObject*safe)p);
}
static void pane_dealloc(Pane *self safe)
{
struct pane *p = self->pane;
/* if initialization failed, then dealloc happens before the
* pane gets closed. In that case we need to modify the
* free sequence so do_free() gets called after the close.
*/
if (p && p->handle && p->handle->func == python_pane_call.func) {
p->handle = &python_null_call;
p->handle->free = python_pane_free_final;
pane_close(p);
} else if (p && p->handle && p->handle->func == python_doc_call.func) {
p->handle = &python_null_call;
p->handle->free = python_pane_free_final;
pane_close(p);
} else {
if (p)
pane_put(p);
do_free((PyObject*safe)self);
}
}
static PyObject *pane_children(Pane *self safe, PyObject *args)
{
PaneIter *ret;
if (!pane_valid(self))
return NULL;
ret = (PaneIter*)PyObject_CallObject((PyObject*)&PaneIterType, NULL);
if (ret) {
if (list_empty(&self->pane->children))
ret->pane = NULL;
else
ret->pane = list_first_entry(&self->pane->children,
struct pane, siblings);
}
return (PyObject*)ret;
}
static Pane *pane_iter_new(PyTypeObject *type safe, PyObject *args, PyObject *kwds)
{
Pane *self;
self = (Pane *)type->tp_alloc(type, 0);
if (self)
self->pane = NULL;
return self;
}
static void paneiter_dealloc(PaneIter *self safe)
{
do_free((PyObject*safe)self);
}
static PyObject *Pane_clone_children(Pane *self safe, PyObject *args)
{
Pane *other = NULL;
int ret;
if (!pane_valid(self))
return NULL;
ret = PyArg_ParseTuple(args, "O!", &PaneType, &other);
if (ret <= 0 || !other)
return NULL;
if (other->pane)
pane_clone_children(self->pane, other->pane);
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *Pane_take_focus(Pane *self safe, PyObject *args)
{
if (!pane_valid(self))
return NULL;
pane_take_focus(self->pane);
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *Pane_has_focus(Pane *self safe, PyObject *args)
{
Pane *other = NULL;
int ret;
if (!pane_valid(self))
return NULL;
ret = PyArg_ParseTuple(args, "|O!", &PaneType, &other);
if (ret <= 0)
return NULL;
if (pane_has_focus(self->pane, other ? other->pane : NULL)) {
Py_INCREF(Py_True);
return Py_True;
} else {
Py_INCREF(Py_False);
return Py_False;
}
}
static PaneIter *pane_this_iter(PaneIter *self safe)
{
Py_INCREF(self);
return self;
}
static PyObject *pane_iter_next(PaneIter *self safe)
{
PyObject *ret;
if (!self->pane)
/* Reached the end */
return NULL;
ret = Pane_Frompane(self->pane);
if (self->pane->siblings.next == &self->pane->parent->children)
/* Reached the end of the list */
self->pane = NULL;
else
self->pane = list_next_entry(self->pane, siblings);
return ret;
}
struct pyret {
struct command comm;
PyObject *ret;
bool return_char;
};
DEF_CB(take_focus)
{
struct pyret *pr = container_of(ci->comm, struct pyret, comm);
struct pane *p = ci->focus;
if (!p)
return Enoarg;
if (pr->ret)
return Efallthrough;
pr->ret = Pane_Frompane(ci->focus);
return 1;
}
DEF_CB(take_mark)
{
struct pyret *pr = container_of(ci->comm, struct pyret, comm);
if (pr->ret)
return Einval;
if (!mark_valid(ci->mark))
return Efallthrough;
if (ci->mark->viewnum == MARK_UNGROUPED) {
/* Cannot rely on this mark persisting, take a copy */
struct mark *m = mark_dup(ci->mark);
pr->ret = Mark_Frommark(m);
m->mtype = (void*)pr->ret;
} else
pr->ret = Mark_Frommark(ci->mark);
return 1;
}
DEF_CB(take_mark2)
{
struct pyret *pr = container_of(ci->comm, struct pyret, comm);
if (pr->ret)
return Einval;
if (!mark_valid(ci->mark2))
return Efallthrough;
pr->ret = Mark_Frommark(ci->mark2);
return 1;
}
DEF_CB(take_2_marks)
{
struct pyret *pr = container_of(ci->comm, struct pyret, comm);
PyObject *m1, *m2;