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1814 lines (1611 loc) · 52.6 KB
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#include <ctype.h>
#include "Python.h"
#include "compile.h"
#include "frameobject.h"
#ifdef HAVE_EXPAT_H
#include "expat.h"
#ifdef XML_MAJOR_VERSION
#define EXPAT_VERSION (0x10000 * XML_MAJOR_VERSION \
+ 0x100 * XML_MINOR_VERSION \
+ XML_MICRO_VERSION)
#else
/* Assume the oldest Expat that used expat.h and did not have version info */
#define EXPAT_VERSION 0x015f00
#endif
#else /* !defined(HAVE_EXPAT_H) */
#include "xmlparse.h"
/* Assume Expat 1.1 unless told otherwise */
#ifndef EXPAT_VERSION
#define EXPAT_VERSION 0x010100
#endif
#endif /* !defined(HAVE_EXPAT_H) */
#ifndef PyGC_HEAD_SIZE
#define PyGC_HEAD_SIZE 0
#define PyObject_GC_Init(x)
#define PyObject_GC_Fini(m)
#define Py_TPFLAGS_GC 0
#endif
enum HandlerTypes {
StartElement,
EndElement,
ProcessingInstruction,
CharacterData,
UnparsedEntityDecl,
NotationDecl,
StartNamespaceDecl,
EndNamespaceDecl,
Comment,
StartCdataSection,
EndCdataSection,
Default,
DefaultHandlerExpand,
NotStandalone,
ExternalEntityRef,
#if EXPAT_VERSION >= 0x010200
StartDoctypeDecl,
EndDoctypeDecl,
#endif
#if EXPAT_VERSION == 0x010200
ExternalParsedEntityDecl,
InternalParsedEntityDecl,
#endif
#if EXPAT_VERSION >= 0x015f00
EntityDecl,
XmlDecl,
ElementDecl,
AttlistDecl,
#endif
_DummyDecl
};
static PyObject *ErrorObject;
/* ----------------------------------------------------- */
/* Declarations for objects of type xmlparser */
typedef struct {
PyObject_HEAD
XML_Parser itself;
int returns_unicode; /* True if Unicode strings are returned;
if false, UTF-8 strings are returned */
int ordered_attributes; /* Return attributes as a list. */
int specified_attributes; /* Report only specified attributes. */
int in_callback; /* Is a callback active? */
PyObject **handlers;
} xmlparseobject;
staticforward PyTypeObject Xmlparsetype;
typedef void (*xmlhandlersetter)(XML_Parser *self, void *meth);
typedef void* xmlhandler;
struct HandlerInfo {
const char *name;
xmlhandlersetter setter;
xmlhandler handler;
PyCodeObject *tb_code;
};
staticforward struct HandlerInfo handler_info[64];
/* Set an integer attribute on the error object; return true on success,
* false on an exception.
*/
static int
set_error_attr(PyObject *err, char *name, int value)
{
PyObject *v = PyInt_FromLong(value);
if (v != NULL && PyObject_SetAttrString(err, name, v) == -1) {
Py_DECREF(v);
return 0;
}
return 1;
}
/* Build and set an Expat exception, including positioning
* information. Always returns NULL.
*/
static PyObject *
set_error(xmlparseobject *self)
{
PyObject *err;
char buffer[256];
XML_Parser parser = self->itself;
int lineno = XML_GetErrorLineNumber(parser);
int column = XML_GetErrorColumnNumber(parser);
enum XML_Error code = XML_GetErrorCode(parser);
sprintf(buffer, "%.200s: line %i, column %i",
XML_ErrorString(code), lineno, column);
err = PyObject_CallFunction(ErrorObject, "s", buffer);
if ( err != NULL
&& set_error_attr(err, "code", code)
&& set_error_attr(err, "offset", column)
&& set_error_attr(err, "lineno", lineno)) {
PyErr_SetObject(ErrorObject, err);
}
return NULL;
}
#if EXPAT_VERSION == 0x010200
/* Convert an array of attributes and their values into a Python dict */
static PyObject *
conv_atts_using_string(XML_Char **atts)
{
PyObject *attrs_obj = NULL;
XML_Char **attrs_p, **attrs_k = NULL;
int attrs_len;
PyObject *rv;
if ((attrs_obj = PyDict_New()) == NULL)
goto finally;
for (attrs_len = 0, attrs_p = atts;
*attrs_p;
attrs_p++, attrs_len++) {
if (attrs_len % 2) {
rv = PyString_FromString(*attrs_p);
if (!rv) {
Py_DECREF(attrs_obj);
attrs_obj = NULL;
goto finally;
}
if (PyDict_SetItemString(attrs_obj,
(char*)*attrs_k, rv) < 0) {
Py_DECREF(attrs_obj);
attrs_obj = NULL;
goto finally;
}
Py_DECREF(rv);
}
else
attrs_k = attrs_p;
}
finally:
return attrs_obj;
}
#endif
#if !(PY_MAJOR_VERSION == 1 && PY_MINOR_VERSION < 6)
#if EXPAT_VERSION == 0x010200
static PyObject *
conv_atts_using_unicode(XML_Char **atts)
{
PyObject *attrs_obj;
XML_Char **attrs_p, **attrs_k = NULL;
int attrs_len;
if ((attrs_obj = PyDict_New()) == NULL)
goto finally;
for (attrs_len = 0, attrs_p = atts;
*attrs_p;
attrs_p++, attrs_len++) {
if (attrs_len % 2) {
PyObject *attr_str, *value_str;
const char *p = (const char *) (*attrs_k);
attr_str = PyUnicode_DecodeUTF8(p, strlen(p), "strict");
if (!attr_str) {
Py_DECREF(attrs_obj);
attrs_obj = NULL;
goto finally;
}
p = (const char *) *attrs_p;
value_str = PyUnicode_DecodeUTF8(p, strlen(p), "strict");
if (!value_str) {
Py_DECREF(attrs_obj);
Py_DECREF(attr_str);
attrs_obj = NULL;
goto finally;
}
if (PyDict_SetItem(attrs_obj, attr_str, value_str) < 0) {
Py_DECREF(attrs_obj);
Py_DECREF(attr_str);
Py_DECREF(value_str);
attrs_obj = NULL;
goto finally;
}
Py_DECREF(attr_str);
Py_DECREF(value_str);
}
else
attrs_k = attrs_p;
}
finally:
return attrs_obj;
}
#endif
/* Convert a string of XML_Chars into a Unicode string.
Returns None if str is a null pointer. */
static PyObject *
conv_string_to_unicode(XML_Char *str)
{
/* XXX currently this code assumes that XML_Char is 8-bit,
and hence in UTF-8. */
/* UTF-8 from Expat, Unicode desired */
if (str == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
return PyUnicode_DecodeUTF8((const char *)str,
strlen((const char *)str),
"strict");
}
static PyObject *
conv_string_len_to_unicode(const XML_Char *str, int len)
{
/* XXX currently this code assumes that XML_Char is 8-bit,
and hence in UTF-8. */
/* UTF-8 from Expat, Unicode desired */
if (str == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
return PyUnicode_DecodeUTF8((const char *)str, len, "strict");
}
#endif
/* Convert a string of XML_Chars into an 8-bit Python string.
Returns None if str is a null pointer. */
static PyObject *
conv_string_to_utf8(XML_Char *str)
{
/* XXX currently this code assumes that XML_Char is 8-bit,
and hence in UTF-8. */
/* UTF-8 from Expat, UTF-8 desired */
if (str == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
return PyString_FromString((const char *)str);
}
static PyObject *
conv_string_len_to_utf8(const XML_Char *str, int len)
{
/* XXX currently this code assumes that XML_Char is 8-bit,
and hence in UTF-8. */
/* UTF-8 from Expat, UTF-8 desired */
if (str == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
return PyString_FromStringAndSize((const char *)str, len);
}
/* Callback routines */
static void clear_handlers(xmlparseobject *self, int decref);
static void
flag_error(xmlparseobject *self)
{
clear_handlers(self, 1);
}
static PyCodeObject*
getcode(enum HandlerTypes slot, char* func_name, int lineno)
{
PyObject *code = NULL;
PyObject *name = NULL;
PyObject *nulltuple = NULL;
PyObject *filename = NULL;
if (handler_info[slot].tb_code == NULL) {
code = PyString_FromString("");
if (code == NULL)
goto failed;
name = PyString_FromString(func_name);
if (name == NULL)
goto failed;
nulltuple = PyTuple_New(0);
if (nulltuple == NULL)
goto failed;
filename = PyString_FromString(__FILE__);
handler_info[slot].tb_code =
PyCode_New(0, /* argcount */
0, /* nlocals */
0, /* stacksize */
0, /* flags */
code, /* code */
nulltuple, /* consts */
nulltuple, /* names */
nulltuple, /* varnames */
#if PYTHON_API_VERSION >= 1010
nulltuple, /* freevars */
nulltuple, /* cellvars */
#endif
filename, /* filename */
name, /* name */
lineno, /* firstlineno */
code /* lnotab */
);
if (handler_info[slot].tb_code == NULL)
goto failed;
Py_DECREF(code);
Py_DECREF(nulltuple);
Py_DECREF(filename);
Py_DECREF(name);
}
return handler_info[slot].tb_code;
failed:
Py_XDECREF(code);
Py_XDECREF(name);
return NULL;
}
static PyObject*
call_with_frame(PyCodeObject *c, PyObject* func, PyObject* args)
{
PyThreadState *tstate = PyThreadState_GET();
PyFrameObject *f;
PyObject *res;
if (c == NULL)
return NULL;
f = PyFrame_New(
tstate, /*back*/
c, /*code*/
tstate->frame->f_globals, /*globals*/
NULL /*locals*/
);
if (f == NULL)
return NULL;
tstate->frame = f;
res = PyEval_CallObject(func, args);
if (res == NULL && tstate->curexc_traceback == NULL)
PyTraceBack_Here(f);
tstate->frame = f->f_back;
Py_DECREF(f);
return res;
}
#if PY_MAJOR_VERSION == 1 && PY_MINOR_VERSION < 6
#define STRING_CONV_FUNC conv_string_to_utf8
#else
/* Python 1.6 and later versions */
#define STRING_CONV_FUNC (self->returns_unicode \
? conv_string_to_unicode : conv_string_to_utf8)
#endif
static void
my_StartElementHandler(void *userData,
const XML_Char *name, const XML_Char **atts)
{
xmlparseobject *self = (xmlparseobject *)userData;
if (self->handlers[StartElement]
&& self->handlers[StartElement] != Py_None) {
PyObject *container, *rv, *args;
int i, max;
/* Set max to the number of slots filled in atts[]; max/2 is
* the number of attributes we need to process.
*/
if (self->specified_attributes) {
max = XML_GetSpecifiedAttributeCount(self->itself);
}
else {
max = 0;
while (atts[max] != NULL)
max += 2;
}
/* Build the container. */
if (self->ordered_attributes)
container = PyList_New(max);
else
container = PyDict_New();
if (container == NULL) {
flag_error(self);
return;
}
for (i = 0; i < max; i += 2) {
PyObject *n = STRING_CONV_FUNC((XML_Char *) atts[i]);
PyObject *v;
if (n == NULL) {
flag_error(self);
Py_DECREF(container);
return;
}
v = STRING_CONV_FUNC((XML_Char *) atts[i+1]);
if (v == NULL) {
flag_error(self);
Py_DECREF(container);
Py_DECREF(n);
return;
}
if (self->ordered_attributes) {
PyList_SET_ITEM(container, i, n);
PyList_SET_ITEM(container, i+1, v);
}
else if (PyDict_SetItem(container, n, v)) {
flag_error(self);
Py_DECREF(n);
Py_DECREF(v);
return;
}
else {
Py_DECREF(n);
Py_DECREF(v);
}
}
args = Py_BuildValue("(O&N)", STRING_CONV_FUNC,name, container);
if (args == NULL) {
Py_DECREF(container);
return;
}
/* Container is now a borrowed reference; ignore it. */
self->in_callback = 1;
rv = call_with_frame(getcode(StartElement, "StartElement", __LINE__),
self->handlers[StartElement], args);
self->in_callback = 0;
Py_DECREF(args);
if (rv == NULL) {
flag_error(self);
return;
}
Py_DECREF(rv);
}
}
#define RC_HANDLER(RC, NAME, PARAMS, INIT, PARAM_FORMAT, CONVERSION, \
RETURN, GETUSERDATA) \
static RC \
my_##NAME##Handler PARAMS {\
xmlparseobject *self = GETUSERDATA ; \
PyObject *args = NULL; \
PyObject *rv = NULL; \
INIT \
\
if (self->handlers[NAME] \
&& self->handlers[NAME] != Py_None) { \
args = Py_BuildValue PARAM_FORMAT ;\
if (!args) \
return RETURN; \
self->in_callback = 1; \
rv = call_with_frame(getcode(NAME,#NAME,__LINE__), \
self->handlers[NAME], args); \
self->in_callback = 0; \
Py_DECREF(args); \
if (rv == NULL) { \
flag_error(self); \
return RETURN; \
} \
CONVERSION \
Py_DECREF(rv); \
} \
return RETURN; \
}
#define VOID_HANDLER(NAME, PARAMS, PARAM_FORMAT) \
RC_HANDLER(void, NAME, PARAMS, ;, PARAM_FORMAT, ;, ;,\
(xmlparseobject *)userData)
#define INT_HANDLER(NAME, PARAMS, PARAM_FORMAT)\
RC_HANDLER(int, NAME, PARAMS, int rc=0;, PARAM_FORMAT, \
rc = PyInt_AsLong(rv);, rc, \
(xmlparseobject *)userData)
VOID_HANDLER(EndElement,
(void *userData, const XML_Char *name),
("(O&)", STRING_CONV_FUNC, name))
VOID_HANDLER(ProcessingInstruction,
(void *userData,
const XML_Char *target,
const XML_Char *data),
("(O&O&)",STRING_CONV_FUNC,target, STRING_CONV_FUNC,data))
#if PY_MAJOR_VERSION == 1 && PY_MINOR_VERSION < 6
VOID_HANDLER(CharacterData,
(void *userData, const XML_Char *data, int len),
("(N)", conv_string_len_to_utf8(data,len)))
#else
VOID_HANDLER(CharacterData,
(void *userData, const XML_Char *data, int len),
("(N)", (self->returns_unicode
? conv_string_len_to_unicode(data,len)
: conv_string_len_to_utf8(data,len))))
#endif
VOID_HANDLER(UnparsedEntityDecl,
(void *userData,
const XML_Char *entityName,
const XML_Char *base,
const XML_Char *systemId,
const XML_Char *publicId,
const XML_Char *notationName),
("(O&O&O&O&O&)",
STRING_CONV_FUNC,entityName, STRING_CONV_FUNC,base,
STRING_CONV_FUNC,systemId, STRING_CONV_FUNC,publicId,
STRING_CONV_FUNC,notationName))
#if EXPAT_VERSION >= 0x015f00
#if PY_MAJOR_VERSION == 1 && PY_MINOR_VERSION < 6
VOID_HANDLER(EntityDecl,
(void *userData,
const XML_Char *entityName,
int is_parameter_entity,
const XML_Char *value,
int value_length,
const XML_Char *base,
const XML_Char *systemId,
const XML_Char *publicId,
const XML_Char *notationName),
("O&iNO&O&O&O&",
STRING_CONV_FUNC,entityName, is_parameter_entity,
conv_string_len_to_utf8(value, value_length),
STRING_CONV_FUNC,base, STRING_CONV_FUNC,systemId,
STRING_CONV_FUNC,publicId, STRING_CONV_FUNC,notationName))
#else
VOID_HANDLER(EntityDecl,
(void *userData,
const XML_Char *entityName,
int is_parameter_entity,
const XML_Char *value,
int value_length,
const XML_Char *base,
const XML_Char *systemId,
const XML_Char *publicId,
const XML_Char *notationName),
("O&iNO&O&O&O&",
STRING_CONV_FUNC,entityName, is_parameter_entity,
(self->returns_unicode
? conv_string_len_to_unicode(value, value_length)
: conv_string_len_to_utf8(value, value_length)),
STRING_CONV_FUNC,base, STRING_CONV_FUNC,systemId,
STRING_CONV_FUNC,publicId, STRING_CONV_FUNC,notationName))
#endif
VOID_HANDLER(XmlDecl,
(void *userData,
const XML_Char *version,
const XML_Char *encoding,
int standalone),
("(O&O&i)",
STRING_CONV_FUNC,version, STRING_CONV_FUNC,encoding,
standalone))
static PyObject *
conv_content_model(XML_Content * const model,
PyObject *(*conv_string)(XML_Char *))
{
PyObject *result = NULL;
PyObject *children = PyTuple_New(model->numchildren);
int i;
if (children != NULL) {
for (i = 0; i < model->numchildren; ++i) {
PyObject *child = conv_content_model(&model->children[i],
conv_string);
if (child == NULL) {
Py_XDECREF(children);
return NULL;
}
PyTuple_SET_ITEM(children, i, child);
}
result = Py_BuildValue("(iiO&N)",
model->type, model->quant,
conv_string,model->name, children);
}
return result;
}
static PyObject *
conv_content_model_utf8(XML_Content * const model)
{
return conv_content_model(model, conv_string_to_utf8);
}
#if !(PY_MAJOR_VERSION == 1 && PY_MINOR_VERSION < 6)
static PyObject *
conv_content_model_unicode(XML_Content * const model)
{
return conv_content_model(model, conv_string_to_unicode);
}
VOID_HANDLER(ElementDecl,
(void *userData,
const XML_Char *name,
XML_Content *model),
("O&O&",
STRING_CONV_FUNC,name,
(self->returns_unicode ? conv_content_model_unicode
: conv_content_model_utf8),model))
#else
VOID_HANDLER(ElementDecl,
(void *userData,
const XML_Char *name,
XML_Content *model),
("O&O&",
STRING_CONV_FUNC,name, conv_content_model_utf8,model))
#endif
VOID_HANDLER(AttlistDecl,
(void *userData,
const XML_Char *elname,
const XML_Char *attname,
const XML_Char *att_type,
const XML_Char *dflt,
int isrequired),
("(O&O&O&O&i)",
STRING_CONV_FUNC,elname, STRING_CONV_FUNC,attname,
STRING_CONV_FUNC,att_type, STRING_CONV_FUNC,dflt,
isrequired))
#endif
VOID_HANDLER(NotationDecl,
(void *userData,
const XML_Char *notationName,
const XML_Char *base,
const XML_Char *systemId,
const XML_Char *publicId),
("(O&O&O&O&)",
STRING_CONV_FUNC,notationName, STRING_CONV_FUNC,base,
STRING_CONV_FUNC,systemId, STRING_CONV_FUNC,publicId))
VOID_HANDLER(StartNamespaceDecl,
(void *userData,
const XML_Char *prefix,
const XML_Char *uri),
("(O&O&)", STRING_CONV_FUNC,prefix, STRING_CONV_FUNC,uri))
VOID_HANDLER(EndNamespaceDecl,
(void *userData,
const XML_Char *prefix),
("(O&)", STRING_CONV_FUNC,prefix))
VOID_HANDLER(Comment,
(void *userData, const XML_Char *prefix),
("(O&)", STRING_CONV_FUNC,prefix))
VOID_HANDLER(StartCdataSection,
(void *userData),
("()"))
VOID_HANDLER(EndCdataSection,
(void *userData),
("()"))
#if PY_MAJOR_VERSION == 1 && PY_MINOR_VERSION < 6
VOID_HANDLER(Default,
(void *userData, const XML_Char *s, int len),
("(N)", conv_string_len_to_utf8(s,len)))
VOID_HANDLER(DefaultHandlerExpand,
(void *userData, const XML_Char *s, int len),
("(N)", conv_string_len_to_utf8(s,len)))
#else
VOID_HANDLER(Default,
(void *userData, const XML_Char *s, int len),
("(N)", (self->returns_unicode
? conv_string_len_to_unicode(s,len)
: conv_string_len_to_utf8(s,len))))
VOID_HANDLER(DefaultHandlerExpand,
(void *userData, const XML_Char *s, int len),
("(N)", (self->returns_unicode
? conv_string_len_to_unicode(s,len)
: conv_string_len_to_utf8(s,len))))
#endif
INT_HANDLER(NotStandalone,
(void *userData),
("()"))
RC_HANDLER(int, ExternalEntityRef,
(XML_Parser parser,
const XML_Char *context,
const XML_Char *base,
const XML_Char *systemId,
const XML_Char *publicId),
int rc=0;,
("(O&O&O&O&)",
STRING_CONV_FUNC,context, STRING_CONV_FUNC,base,
STRING_CONV_FUNC,systemId, STRING_CONV_FUNC,publicId),
rc = PyInt_AsLong(rv);, rc,
XML_GetUserData(parser))
/* XXX UnknownEncodingHandler */
#if EXPAT_VERSION == 0x010200
VOID_HANDLER(StartDoctypeDecl,
(void *userData, const XML_Char *doctypeName),
("(O&OOi)", STRING_CONV_FUNC,doctypeName,
Py_None, Py_None, -1))
#elif EXPAT_VERSION >= 0x015f00
VOID_HANDLER(StartDoctypeDecl,
(void *userData, const XML_Char *doctypeName,
const XML_Char *sysid, const XML_Char *pubid,
int has_internal_subset),
("(O&O&O&i)", STRING_CONV_FUNC,doctypeName,
STRING_CONV_FUNC,sysid, STRING_CONV_FUNC,pubid,
has_internal_subset))
#endif
#if EXPAT_VERSION >= 0x010200
VOID_HANDLER(EndDoctypeDecl, (void *userData), ("()"))
#endif
#if EXPAT_VERSION == 0x010200
VOID_HANDLER(ExternalParsedEntityDecl,
(void *userData, const XML_Char *entityName,
const XML_Char *base, const XML_Char *systemId,
const XML_Char *publicId),
("(O&O&O&O&)", STRING_CONV_FUNC, entityName,
STRING_CONV_FUNC, base, STRING_CONV_FUNC, systemId,
STRING_CONV_FUNC, publicId))
VOID_HANDLER(InternalParsedEntityDecl,
(void *userData, const XML_Char *entityName,
const XML_Char *replacementText, int replacementTextLength),
("(O&O&i)", STRING_CONV_FUNC, entityName,
STRING_CONV_FUNC, replacementText, replacementTextLength))
#endif /* Expat version 1.2 & better */
/* ---------------------------------------------------------------- */
static char xmlparse_Parse__doc__[] =
"Parse(data[, isfinal])\n\
Parse XML data. `isfinal' should be true at end of input.";
static PyObject *
xmlparse_Parse(xmlparseobject *self, PyObject *args)
{
char *s;
int slen;
int isFinal = 0;
int rv;
if (!PyArg_ParseTuple(args, "s#|i:Parse", &s, &slen, &isFinal))
return NULL;
rv = XML_Parse(self->itself, s, slen, isFinal);
if (PyErr_Occurred()) {
return NULL;
}
else if (rv == 0) {
return set_error(self);
}
return PyInt_FromLong(rv);
}
/* File reading copied from cPickle */
#define BUF_SIZE 2048
static int
readinst(char *buf, int buf_size, PyObject *meth)
{
PyObject *arg = NULL;
PyObject *bytes = NULL;
PyObject *str = NULL;
int len = -1;
if ((bytes = PyInt_FromLong(buf_size)) == NULL)
goto finally;
if ((arg = PyTuple_New(1)) == NULL)
goto finally;
PyTuple_SET_ITEM(arg, 0, bytes);
if ((str = PyObject_CallObject(meth, arg)) == NULL)
goto finally;
/* XXX what to do if it returns a Unicode string? */
if (!PyString_Check(str)) {
PyErr_Format(PyExc_TypeError,
"read() did not return a string object (type=%.400s)",
str->ob_type->tp_name);
goto finally;
}
len = PyString_GET_SIZE(str);
if (len > buf_size) {
PyErr_Format(PyExc_ValueError,
"read() returned too much data: "
"%i bytes requested, %i returned",
buf_size, len);
Py_DECREF(str);
goto finally;
}
memcpy(buf, PyString_AsString(str), len);
finally:
Py_XDECREF(arg);
Py_XDECREF(str);
return len;
}
static char xmlparse_ParseFile__doc__[] =
"ParseFile(file)\n\
Parse XML data from file-like object.";
static PyObject *
xmlparse_ParseFile(xmlparseobject *self, PyObject *args)
{
int rv = 1;
PyObject *f;
FILE *fp;
PyObject *readmethod = NULL;
if (!PyArg_ParseTuple(args, "O:ParseFile", &f))
return NULL;
if (PyFile_Check(f)) {
fp = PyFile_AsFile(f);
}
else{
fp = NULL;
readmethod = PyObject_GetAttrString(f, "read");
if (readmethod == NULL) {
PyErr_Clear();
PyErr_SetString(PyExc_TypeError,
"argument must have 'read' attribute");
return 0;
}
}
for (;;) {
int bytes_read;
void *buf = XML_GetBuffer(self->itself, BUF_SIZE);
if (buf == NULL)
return PyErr_NoMemory();
if (fp) {
bytes_read = fread(buf, sizeof(char), BUF_SIZE, fp);
if (bytes_read < 0) {
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
}
else {
bytes_read = readinst(buf, BUF_SIZE, readmethod);
if (bytes_read < 0)
return NULL;
}
rv = XML_ParseBuffer(self->itself, bytes_read, bytes_read == 0);
if (PyErr_Occurred())
return NULL;
if (!rv || bytes_read == 0)
break;
}
if (rv == 0) {
return set_error(self);
}
return Py_BuildValue("i", rv);
}
static char xmlparse_SetBase__doc__[] =
"SetBase(base_url)\n\
Set the base URL for the parser.";
static PyObject *
xmlparse_SetBase(xmlparseobject *self, PyObject *args)
{
char *base;
if (!PyArg_ParseTuple(args, "s:SetBase", &base))
return NULL;
if (!XML_SetBase(self->itself, base)) {
return PyErr_NoMemory();
}
Py_INCREF(Py_None);
return Py_None;
}
static char xmlparse_GetBase__doc__[] =
"GetBase() -> url\n\
Return base URL string for the parser.";
static PyObject *
xmlparse_GetBase(xmlparseobject *self, PyObject *args)
{
if (!PyArg_ParseTuple(args, ":GetBase"))
return NULL;
return Py_BuildValue("z", XML_GetBase(self->itself));
}
#if EXPAT_VERSION >= 0x015f00
static char xmlparse_GetInputContext__doc__[] =
"GetInputContext() -> string\n\
Return the untranslated text of the input that caused the current event.\n\
If the event was generated by a large amount of text (such as a start tag\n\
for an element with many attributes), not all of the text may be available.";
static PyObject *
xmlparse_GetInputContext(xmlparseobject *self, PyObject *args)
{
PyObject *result = NULL;
if (PyArg_ParseTuple(args, ":GetInputContext")) {
if (self->in_callback) {
int offset, size;
const char *buffer
= XML_GetInputContext(self->itself, &offset, &size);
if (buffer != NULL)
result = PyString_FromStringAndSize(buffer + offset, size);
else {
result = Py_None;
Py_INCREF(result);
}
}
else {
result = Py_None;
Py_INCREF(result);
}
}
return result;
}
#endif
static char xmlparse_ExternalEntityParserCreate__doc__[] =
"ExternalEntityParserCreate(context[, encoding])\n\
Create a parser for parsing an external entity based on the\n\
information passed to the ExternalEntityRefHandler.";
static PyObject *
xmlparse_ExternalEntityParserCreate(xmlparseobject *self, PyObject *args)
{
char *context;
char *encoding = NULL;
xmlparseobject *new_parser;
int i;
if (!PyArg_ParseTuple(args, "s|s:ExternalEntityParserCreate", &context,
&encoding)) {
return NULL;
}
#if PY_MAJOR_VERSION == 1 && PY_MINOR_VERSION < 6
new_parser = PyObject_NEW(xmlparseobject, &Xmlparsetype);
#else
/* Python versions 1.6 and later */
new_parser = PyObject_New(xmlparseobject, &Xmlparsetype);
#endif
if (new_parser == NULL)
return NULL;
new_parser->returns_unicode = self->returns_unicode;
new_parser->ordered_attributes = self->ordered_attributes;
new_parser->specified_attributes = self->specified_attributes;
new_parser->in_callback = 0;
new_parser->itself = XML_ExternalEntityParserCreate(self->itself, context,
encoding);
new_parser->handlers = 0;
PyObject_GC_Init(new_parser);
if (!new_parser->itself) {
Py_DECREF(new_parser);
return PyErr_NoMemory();
}
XML_SetUserData(new_parser->itself, (void *)new_parser);
/* allocate and clear handlers first */
for(i = 0; handler_info[i].name != NULL; i++)
/* do nothing */;
new_parser->handlers = malloc(sizeof(PyObject *)*i);