mirror of
https://github.com/python/cpython.git
synced 2025-08-03 00:23:06 +00:00
- Modernize code to use Py_ssize_t more intensively.
- Do some minor code clean-ups.
This commit is contained in:
Hye-Shik Chang
parent
ad9afcf213
commit
4b96c1384e
18 changed files with 131 additions and 168 deletions
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@ -2,13 +2,12 @@
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* multibytecodec.c: Common Multibyte Codec Implementation
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*
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* Written by Hye-Shik Chang <perky@FreeBSD.org>
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* $CJKCodecs: multibytecodec.c,v 1.13 2004/08/19 16:57:19 perky Exp $
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*/
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#define PY_SSIZE_T_CLEAN
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#include "Python.h"
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#include "multibytecodec.h"
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typedef struct {
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const Py_UNICODE *inbuf, *inbuf_top, *inbuf_end;
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unsigned char *outbuf, *outbuf_end;
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@ -49,7 +48,7 @@ static char *codeckwarglist[] = {"input", "errors", NULL};
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static char *streamkwarglist[] = {"stream", "errors", NULL};
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static PyObject *multibytecodec_encode(MultibyteCodec *,
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MultibyteCodec_State *, const Py_UNICODE **, size_t,
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MultibyteCodec_State *, const Py_UNICODE **, Py_ssize_t,
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PyObject *, int);
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static PyObject *mbstreamreader_create(MultibyteCodec *,
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PyObject *, const char *);
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@ -59,21 +58,21 @@ static PyObject *mbstreamwriter_create(MultibyteCodec *,
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#define MBENC_RESET MBENC_MAX<<1 /* reset after an encoding session */
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static PyObject *
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make_tuple(PyObject *unicode, int len)
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make_tuple(PyObject *object, Py_ssize_t len)
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{
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PyObject *v, *w;
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if (unicode == NULL)
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if (object == NULL)
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return NULL;
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v = PyTuple_New(2);
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if (v == NULL) {
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Py_DECREF(unicode);
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Py_DECREF(object);
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return NULL;
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}
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PyTuple_SET_ITEM(v, 0, unicode);
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PyTuple_SET_ITEM(v, 0, object);
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w = PyInt_FromLong(len);
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w = PyInt_FromSsize_t(len);
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if (w == NULL) {
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Py_DECREF(v);
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return NULL;
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@ -98,11 +97,12 @@ get_errorcallback(const char *errors)
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}
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static int
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expand_encodebuffer(MultibyteEncodeBuffer *buf, int esize)
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expand_encodebuffer(MultibyteEncodeBuffer *buf, Py_ssize_t esize)
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{
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int orgpos, orgsize;
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Py_ssize_t orgpos, orgsize;
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orgpos = (int)((char*)buf->outbuf - PyString_AS_STRING(buf->outobj));
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orgpos = (Py_ssize_t)((char*)buf->outbuf -
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PyString_AS_STRING(buf->outobj));
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orgsize = PyString_GET_SIZE(buf->outobj);
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if (_PyString_Resize(&buf->outobj, orgsize + (
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esize < (orgsize >> 1) ? (orgsize >> 1) | 1 : esize)) == -1)
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@ -121,11 +121,12 @@ expand_encodebuffer(MultibyteEncodeBuffer *buf, int esize)
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}
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static int
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expand_decodebuffer(MultibyteDecodeBuffer *buf, int esize)
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expand_decodebuffer(MultibyteDecodeBuffer *buf, Py_ssize_t esize)
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{
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int orgpos, orgsize;
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Py_ssize_t orgpos, orgsize;
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orgpos = (int)(buf->outbuf - PyUnicode_AS_UNICODE(buf->outobj));
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orgpos = (Py_ssize_t)(buf->outbuf -
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PyUnicode_AS_UNICODE(buf->outobj));
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orgsize = PyUnicode_GET_SIZE(buf->outobj);
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if (PyUnicode_Resize(&buf->outobj, orgsize + (
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esize < (orgsize >> 1) ? (orgsize >> 1) | 1 : esize)) == -1)
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@ -147,13 +148,12 @@ static int
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multibytecodec_encerror(MultibyteCodec *codec,
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MultibyteCodec_State *state,
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MultibyteEncodeBuffer *buf,
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PyObject *errors, int e)
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PyObject *errors, Py_ssize_t e)
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{
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PyObject *retobj = NULL, *retstr = NULL, *argsobj, *tobj;
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int retstrsize, newpos;
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Py_ssize_t retstrsize, newpos;
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const char *reason;
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size_t esize;
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int start, end;
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Py_ssize_t esize, start, end;
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if (e > 0) {
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reason = "illegal multibyte sequence";
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@ -181,12 +181,12 @@ multibytecodec_encerror(MultibyteCodec *codec,
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if (errors == ERROR_REPLACE) {
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const Py_UNICODE replchar = '?', *inbuf = &replchar;
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int r;
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Py_ssize_t r;
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for (;;) {
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size_t outleft;
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Py_ssize_t outleft;
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outleft = (size_t)(buf->outbuf_end - buf->outbuf);
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outleft = (Py_ssize_t)(buf->outbuf_end - buf->outbuf);
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r = codec->encode(state, codec->config, &inbuf, 1,
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&buf->outbuf, outleft, 0);
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if (r == MBERR_TOOSMALL) {
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@ -207,7 +207,7 @@ multibytecodec_encerror(MultibyteCodec *codec,
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return 0;
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}
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start = (int)(buf->inbuf - buf->inbuf_top);
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start = (Py_ssize_t)(buf->inbuf - buf->inbuf_top);
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end = start + esize;
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/* use cached exception object if available */
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@ -266,13 +266,13 @@ multibytecodec_encerror(MultibyteCodec *codec,
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memcpy(buf->outbuf, PyString_AS_STRING(retstr), retstrsize);
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buf->outbuf += retstrsize;
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newpos = (int)PyInt_AS_LONG(PyTuple_GET_ITEM(retobj, 1));
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newpos = PyInt_AsSsize_t(PyTuple_GET_ITEM(retobj, 1));
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if (newpos < 0)
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newpos += (int)(buf->inbuf_end - buf->inbuf_top);
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newpos += (Py_ssize_t)(buf->inbuf_end - buf->inbuf_top);
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if (newpos < 0 || buf->inbuf_top + newpos > buf->inbuf_end) {
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PyErr_Format(PyExc_IndexError,
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"position %d from error handler out of bounds",
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newpos);
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(int)newpos);
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goto errorexit;
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}
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buf->inbuf = buf->inbuf_top + newpos;
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@ -291,13 +291,12 @@ static int
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multibytecodec_decerror(MultibyteCodec *codec,
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MultibyteCodec_State *state,
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MultibyteDecodeBuffer *buf,
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PyObject *errors, int e)
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PyObject *errors, Py_ssize_t e)
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{
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PyObject *argsobj, *retobj = NULL, *retuni = NULL;
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int retunisize, newpos;
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Py_ssize_t retunisize, newpos;
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const char *reason;
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size_t esize;
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int start, end;
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Py_ssize_t esize, start, end;
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if (e > 0) {
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reason = "illegal multibyte sequence";
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@ -332,14 +331,14 @@ multibytecodec_decerror(MultibyteCodec *codec,
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return 0;
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}
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start = (int)(buf->inbuf - buf->inbuf_top);
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start = (Py_ssize_t)(buf->inbuf - buf->inbuf_top);
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end = start + esize;
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/* use cached exception object if available */
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if (buf->excobj == NULL) {
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buf->excobj = PyUnicodeDecodeError_Create(codec->encoding,
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(const char *)buf->inbuf_top,
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(int)(buf->inbuf_end - buf->inbuf_top),
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(Py_ssize_t)(buf->inbuf_end - buf->inbuf_top),
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start, end, reason);
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if (buf->excobj == NULL)
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goto errorexit;
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@ -383,13 +382,13 @@ multibytecodec_decerror(MultibyteCodec *codec,
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buf->outbuf += retunisize;
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}
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newpos = (int)PyInt_AS_LONG(PyTuple_GET_ITEM(retobj, 1));
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newpos = PyInt_AsSsize_t(PyTuple_GET_ITEM(retobj, 1));
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if (newpos < 0)
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newpos += (int)(buf->inbuf_end - buf->inbuf_top);
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newpos += (Py_ssize_t)(buf->inbuf_end - buf->inbuf_top);
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if (newpos < 0 || buf->inbuf_top + newpos > buf->inbuf_end) {
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PyErr_Format(PyExc_IndexError,
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"position %d from error handler out of bounds",
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newpos);
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(int)newpos);
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goto errorexit;
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}
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buf->inbuf = buf->inbuf_top + newpos;
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@ -404,11 +403,11 @@ errorexit:
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static PyObject *
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multibytecodec_encode(MultibyteCodec *codec,
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MultibyteCodec_State *state,
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const Py_UNICODE **data, size_t datalen,
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const Py_UNICODE **data, Py_ssize_t datalen,
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PyObject *errors, int flags)
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{
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MultibyteEncodeBuffer buf;
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int finalsize, r = 0;
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Py_ssize_t finalsize, r = 0;
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if (datalen == 0)
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return PyString_FromString("");
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@ -423,12 +422,12 @@ multibytecodec_encode(MultibyteCodec *codec,
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buf.outbuf_end = buf.outbuf + PyString_GET_SIZE(buf.outobj);
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while (buf.inbuf < buf.inbuf_end) {
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size_t inleft, outleft;
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Py_ssize_t inleft, outleft;
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/* we don't reuse inleft and outleft here.
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* error callbacks can relocate the cursor anywhere on buffer*/
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inleft = (size_t)(buf.inbuf_end - buf.inbuf);
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outleft = (size_t)(buf.outbuf_end - buf.outbuf);
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inleft = (Py_ssize_t)(buf.inbuf_end - buf.inbuf);
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outleft = (Py_ssize_t)(buf.outbuf_end - buf.outbuf);
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r = codec->encode(state, codec->config, &buf.inbuf, inleft,
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&buf.outbuf, outleft, flags);
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*data = buf.inbuf;
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@ -442,9 +441,9 @@ multibytecodec_encode(MultibyteCodec *codec,
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if (codec->encreset != NULL)
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for (;;) {
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size_t outleft;
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Py_ssize_t outleft;
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outleft = (size_t)(buf.outbuf_end - buf.outbuf);
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outleft = (Py_ssize_t)(buf.outbuf_end - buf.outbuf);
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r = codec->encreset(state, codec->config, &buf.outbuf,
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outleft);
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if (r == 0)
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@ -454,7 +453,8 @@ multibytecodec_encode(MultibyteCodec *codec,
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goto errorexit;
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}
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finalsize = (int)((char*)buf.outbuf - PyString_AS_STRING(buf.outobj));
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finalsize = (Py_ssize_t)((char*)buf.outbuf -
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PyString_AS_STRING(buf.outobj));
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if (finalsize != PyString_GET_SIZE(buf.outobj))
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if (_PyString_Resize(&buf.outobj, finalsize) == -1)
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@ -477,7 +477,7 @@ MultibyteCodec_Encode(MultibyteCodecObject *self,
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Py_UNICODE *data;
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PyObject *errorcb, *r, *arg, *ucvt;
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const char *errors = NULL;
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int datalen;
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Py_ssize_t datalen;
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if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|z:encode",
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codeckwarglist, &arg, &errors))
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@ -537,7 +537,7 @@ MultibyteCodec_Decode(MultibyteCodecObject *self,
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MultibyteDecodeBuffer buf;
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PyObject *errorcb;
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const char *data, *errors = NULL;
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int datalen, finalsize;
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Py_ssize_t datalen, finalsize;
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if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s#|z:decode",
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codeckwarglist, &data, &datalen, &errors))
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@ -568,11 +568,10 @@ MultibyteCodec_Decode(MultibyteCodecObject *self,
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goto errorexit;
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while (buf.inbuf < buf.inbuf_end) {
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size_t inleft, outleft;
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int r;
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Py_ssize_t inleft, outleft, r;
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inleft = (size_t)(buf.inbuf_end - buf.inbuf);
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outleft = (size_t)(buf.outbuf_end - buf.outbuf);
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inleft = (Py_ssize_t)(buf.inbuf_end - buf.inbuf);
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outleft = (Py_ssize_t)(buf.outbuf_end - buf.outbuf);
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r = self->codec->decode(&state, self->codec->config,
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&buf.inbuf, inleft, &buf.outbuf, outleft);
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@ -583,7 +582,8 @@ MultibyteCodec_Decode(MultibyteCodecObject *self,
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goto errorexit;
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}
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finalsize = (int)(buf.outbuf - PyUnicode_AS_UNICODE(buf.outobj));
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finalsize = (Py_ssize_t)(buf.outbuf -
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PyUnicode_AS_UNICODE(buf.outobj));
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if (finalsize != PyUnicode_GET_SIZE(buf.outobj))
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if (PyUnicode_Resize(&buf.outobj, finalsize) == -1)
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@ -666,7 +666,7 @@ static PyTypeObject MultibyteCodec_Type = {
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/* methods */
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(destructor)multibytecodec_dealloc, /* tp_dealloc */
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0, /* tp_print */
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0, /* tp_getattr */
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0, /* tp_getattr */
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0, /* tp_setattr */
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0, /* tp_compare */
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0, /* tp_repr */
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@ -692,11 +692,11 @@ static PyTypeObject MultibyteCodec_Type = {
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static PyObject *
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mbstreamreader_iread(MultibyteStreamReaderObject *self,
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const char *method, int sizehint)
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const char *method, Py_ssize_t sizehint)
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{
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MultibyteDecodeBuffer buf;
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PyObject *cres;
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int rsize, r, finalsize = 0;
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Py_ssize_t rsize, r, finalsize = 0;
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if (sizehint == 0)
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return PyUnicode_FromUnicode(NULL, 0);
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@ -755,10 +755,12 @@ mbstreamreader_iread(MultibyteStreamReaderObject *self,
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r = 0;
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if (rsize > 0)
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while (buf.inbuf < buf.inbuf_end) {
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size_t inleft, outleft;
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Py_ssize_t inleft, outleft;
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inleft = (size_t)(buf.inbuf_end - buf.inbuf);
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outleft = (size_t)(buf.outbuf_end -buf.outbuf);
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inleft = (Py_ssize_t)(buf.inbuf_end -
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buf.inbuf);
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outleft = (Py_ssize_t)(buf.outbuf_end -
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buf.outbuf);
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r = self->codec->decode(&self->state,
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self->codec->config,
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@ -780,12 +782,12 @@ mbstreamreader_iread(MultibyteStreamReaderObject *self,
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}
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if (buf.inbuf < buf.inbuf_end) { /* pending sequence exists */
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size_t npendings;
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Py_ssize_t npendings;
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/* we can't assume that pendingsize is still 0 here.
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* because this function can be called recursively
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* from error callback */
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npendings = (size_t)(buf.inbuf_end - buf.inbuf);
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npendings = (Py_ssize_t)(buf.inbuf_end - buf.inbuf);
|
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if (npendings + self->pendingsize > MAXDECPENDING) {
|
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PyErr_SetString(PyExc_RuntimeError,
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"pending buffer overflow");
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|
|
@ -796,7 +798,7 @@ mbstreamreader_iread(MultibyteStreamReaderObject *self,
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self->pendingsize += npendings;
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}
|
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|
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finalsize = (int)(buf.outbuf -
|
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finalsize = (Py_ssize_t)(buf.outbuf -
|
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PyUnicode_AS_UNICODE(buf.outobj));
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Py_DECREF(cres);
|
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cres = NULL;
|
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|
|
@ -826,7 +828,7 @@ static PyObject *
|
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mbstreamreader_read(MultibyteStreamReaderObject *self, PyObject *args)
|
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{
|
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PyObject *sizeobj = NULL;
|
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long size;
|
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Py_ssize_t size;
|
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|
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if (!PyArg_ParseTuple(args, "|O:read", &sizeobj))
|
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return NULL;
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|
|
@ -834,7 +836,7 @@ mbstreamreader_read(MultibyteStreamReaderObject *self, PyObject *args)
|
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if (sizeobj == Py_None || sizeobj == NULL)
|
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size = -1;
|
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else if (PyInt_Check(sizeobj))
|
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size = PyInt_AsLong(sizeobj);
|
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size = PyInt_AsSsize_t(sizeobj);
|
||||
else {
|
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PyErr_SetString(PyExc_TypeError, "arg 1 must be an integer");
|
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return NULL;
|
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|
|
@ -847,7 +849,7 @@ static PyObject *
|
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mbstreamreader_readline(MultibyteStreamReaderObject *self, PyObject *args)
|
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{
|
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PyObject *sizeobj = NULL;
|
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long size;
|
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Py_ssize_t size;
|
||||
|
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if (!PyArg_ParseTuple(args, "|O:readline", &sizeobj))
|
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return NULL;
|
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|
|
@ -855,7 +857,7 @@ mbstreamreader_readline(MultibyteStreamReaderObject *self, PyObject *args)
|
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if (sizeobj == Py_None || sizeobj == NULL)
|
||||
size = -1;
|
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else if (PyInt_Check(sizeobj))
|
||||
size = PyInt_AsLong(sizeobj);
|
||||
size = PyInt_AsSsize_t(sizeobj);
|
||||
else {
|
||||
PyErr_SetString(PyExc_TypeError, "arg 1 must be an integer");
|
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return NULL;
|
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|
|
@ -868,7 +870,7 @@ static PyObject *
|
|||
mbstreamreader_readlines(MultibyteStreamReaderObject *self, PyObject *args)
|
||||
{
|
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PyObject *sizehintobj = NULL, *r, *sr;
|
||||
long sizehint;
|
||||
Py_ssize_t sizehint;
|
||||
|
||||
if (!PyArg_ParseTuple(args, "|O:readlines", &sizehintobj))
|
||||
return NULL;
|
||||
|
|
@ -876,7 +878,7 @@ mbstreamreader_readlines(MultibyteStreamReaderObject *self, PyObject *args)
|
|||
if (sizehintobj == Py_None || sizehintobj == NULL)
|
||||
sizehint = -1;
|
||||
else if (PyInt_Check(sizehintobj))
|
||||
sizehint = PyInt_AsLong(sizehintobj);
|
||||
sizehint = PyInt_AsSsize_t(sizehintobj);
|
||||
else {
|
||||
PyErr_SetString(PyExc_TypeError, "arg 1 must be an integer");
|
||||
return NULL;
|
||||
|
|
@ -936,7 +938,7 @@ static PyTypeObject MultibyteStreamReader_Type = {
|
|||
/* methods */
|
||||
(destructor)mbstreamreader_dealloc, /* tp_dealloc */
|
||||
0, /* tp_print */
|
||||
0, /* tp_getattr */
|
||||
0, /* tp_getattr */
|
||||
0, /* tp_setattr */
|
||||
0, /* tp_compare */
|
||||
0, /* tp_repr */
|
||||
|
|
@ -966,7 +968,7 @@ mbstreamwriter_iwrite(MultibyteStreamWriterObject *self,
|
|||
{
|
||||
PyObject *wr, *ucvt, *r = NULL;
|
||||
Py_UNICODE *inbuf, *inbuf_end, *inbuf_tmp = NULL;
|
||||
int datalen;
|
||||
Py_ssize_t datalen;
|
||||
|
||||
if (PyUnicode_Check(unistr))
|
||||
ucvt = NULL;
|
||||
|
|
@ -1012,7 +1014,7 @@ mbstreamwriter_iwrite(MultibyteStreamWriterObject *self,
|
|||
goto errorexit;
|
||||
|
||||
if (inbuf < inbuf_end) {
|
||||
self->pendingsize = (int)(inbuf_end - inbuf);
|
||||
self->pendingsize = (Py_ssize_t)(inbuf_end - inbuf);
|
||||
if (self->pendingsize > MAXENCPENDING) {
|
||||
self->pendingsize = 0;
|
||||
PyErr_SetString(PyExc_RuntimeError,
|
||||
|
|
@ -1152,7 +1154,7 @@ static PyTypeObject MultibyteStreamWriter_Type = {
|
|||
/* methods */
|
||||
(destructor)mbstreamwriter_dealloc, /* tp_dealloc */
|
||||
0, /* tp_print */
|
||||
0, /* tp_getattr */
|
||||
0, /* tp_getattr */
|
||||
0, /* tp_setattr */
|
||||
0, /* tp_compare */
|
||||
0, /* tp_repr */
|
||||
|
|
@ -1265,9 +1267,12 @@ static struct PyMethodDef __methods[] = {
|
|||
void
|
||||
init_multibytecodec(void)
|
||||
{
|
||||
MultibyteCodec_Type.ob_type = &PyType_Type;
|
||||
MultibyteStreamReader_Type.ob_type = &PyType_Type;
|
||||
MultibyteStreamWriter_Type.ob_type = &PyType_Type;
|
||||
if (PyType_Ready(&MultibyteCodec_Type) < 0)
|
||||
return;
|
||||
if (PyType_Ready(&MultibyteStreamReader_Type) < 0)
|
||||
return;
|
||||
if (PyType_Ready(&MultibyteStreamWriter_Type) < 0)
|
||||
return;
|
||||
|
||||
Py_InitModule("_multibytecodec", __methods);
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue