diff options
Diffstat (limited to '.venv/lib/python3.12/site-packages/markupsafe/_speedups.c')
| -rw-r--r-- | .venv/lib/python3.12/site-packages/markupsafe/_speedups.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/markupsafe/_speedups.c b/.venv/lib/python3.12/site-packages/markupsafe/_speedups.c new file mode 100644 index 00000000..09dd57ca --- /dev/null +++ b/.venv/lib/python3.12/site-packages/markupsafe/_speedups.c @@ -0,0 +1,204 @@ +#include <Python.h> + +#define GET_DELTA(inp, inp_end, delta) \ + while (inp < inp_end) { \ + switch (*inp++) { \ + case '"': \ + case '\'': \ + case '&': \ + delta += 4; \ + break; \ + case '<': \ + case '>': \ + delta += 3; \ + break; \ + } \ + } + +#define DO_ESCAPE(inp, inp_end, outp) \ + { \ + Py_ssize_t ncopy = 0; \ + while (inp < inp_end) { \ + switch (*inp) { \ + case '"': \ + memcpy(outp, inp-ncopy, sizeof(*outp)*ncopy); \ + outp += ncopy; ncopy = 0; \ + *outp++ = '&'; \ + *outp++ = '#'; \ + *outp++ = '3'; \ + *outp++ = '4'; \ + *outp++ = ';'; \ + break; \ + case '\'': \ + memcpy(outp, inp-ncopy, sizeof(*outp)*ncopy); \ + outp += ncopy; ncopy = 0; \ + *outp++ = '&'; \ + *outp++ = '#'; \ + *outp++ = '3'; \ + *outp++ = '9'; \ + *outp++ = ';'; \ + break; \ + case '&': \ + memcpy(outp, inp-ncopy, sizeof(*outp)*ncopy); \ + outp += ncopy; ncopy = 0; \ + *outp++ = '&'; \ + *outp++ = 'a'; \ + *outp++ = 'm'; \ + *outp++ = 'p'; \ + *outp++ = ';'; \ + break; \ + case '<': \ + memcpy(outp, inp-ncopy, sizeof(*outp)*ncopy); \ + outp += ncopy; ncopy = 0; \ + *outp++ = '&'; \ + *outp++ = 'l'; \ + *outp++ = 't'; \ + *outp++ = ';'; \ + break; \ + case '>': \ + memcpy(outp, inp-ncopy, sizeof(*outp)*ncopy); \ + outp += ncopy; ncopy = 0; \ + *outp++ = '&'; \ + *outp++ = 'g'; \ + *outp++ = 't'; \ + *outp++ = ';'; \ + break; \ + default: \ + ncopy++; \ + } \ + inp++; \ + } \ + memcpy(outp, inp-ncopy, sizeof(*outp)*ncopy); \ + } + +static PyObject* +escape_unicode_kind1(PyUnicodeObject *in) +{ + Py_UCS1 *inp = PyUnicode_1BYTE_DATA(in); + Py_UCS1 *inp_end = inp + PyUnicode_GET_LENGTH(in); + Py_UCS1 *outp; + PyObject *out; + Py_ssize_t delta = 0; + + GET_DELTA(inp, inp_end, delta); + if (!delta) { + Py_INCREF(in); + return (PyObject*)in; + } + + out = PyUnicode_New(PyUnicode_GET_LENGTH(in) + delta, + PyUnicode_IS_ASCII(in) ? 127 : 255); + if (!out) + return NULL; + + inp = PyUnicode_1BYTE_DATA(in); + outp = PyUnicode_1BYTE_DATA(out); + DO_ESCAPE(inp, inp_end, outp); + return out; +} + +static PyObject* +escape_unicode_kind2(PyUnicodeObject *in) +{ + Py_UCS2 *inp = PyUnicode_2BYTE_DATA(in); + Py_UCS2 *inp_end = inp + PyUnicode_GET_LENGTH(in); + Py_UCS2 *outp; + PyObject *out; + Py_ssize_t delta = 0; + + GET_DELTA(inp, inp_end, delta); + if (!delta) { + Py_INCREF(in); + return (PyObject*)in; + } + + out = PyUnicode_New(PyUnicode_GET_LENGTH(in) + delta, 65535); + if (!out) + return NULL; + + inp = PyUnicode_2BYTE_DATA(in); + outp = PyUnicode_2BYTE_DATA(out); + DO_ESCAPE(inp, inp_end, outp); + return out; +} + + +static PyObject* +escape_unicode_kind4(PyUnicodeObject *in) +{ + Py_UCS4 *inp = PyUnicode_4BYTE_DATA(in); + Py_UCS4 *inp_end = inp + PyUnicode_GET_LENGTH(in); + Py_UCS4 *outp; + PyObject *out; + Py_ssize_t delta = 0; + + GET_DELTA(inp, inp_end, delta); + if (!delta) { + Py_INCREF(in); + return (PyObject*)in; + } + + out = PyUnicode_New(PyUnicode_GET_LENGTH(in) + delta, 1114111); + if (!out) + return NULL; + + inp = PyUnicode_4BYTE_DATA(in); + outp = PyUnicode_4BYTE_DATA(out); + DO_ESCAPE(inp, inp_end, outp); + return out; +} + +static PyObject* +escape_unicode(PyObject *self, PyObject *s) +{ + if (!PyUnicode_Check(s)) + return NULL; + + // This check is no longer needed in Python 3.12. + if (PyUnicode_READY(s)) + return NULL; + + switch (PyUnicode_KIND(s)) { + case PyUnicode_1BYTE_KIND: + return escape_unicode_kind1((PyUnicodeObject*) s); + case PyUnicode_2BYTE_KIND: + return escape_unicode_kind2((PyUnicodeObject*) s); + case PyUnicode_4BYTE_KIND: + return escape_unicode_kind4((PyUnicodeObject*) s); + } + assert(0); /* shouldn't happen */ + return NULL; +} + +static PyMethodDef module_methods[] = { + {"_escape_inner", (PyCFunction)escape_unicode, METH_O, NULL}, + {NULL, NULL, 0, NULL} /* Sentinel */ +}; + +static struct PyModuleDef module_definition = { + PyModuleDef_HEAD_INIT, + "markupsafe._speedups", + NULL, + -1, + module_methods, + NULL, + NULL, + NULL, + NULL +}; + +PyMODINIT_FUNC +PyInit__speedups(void) +{ + PyObject *m = PyModule_Create(&module_definition); + + if (m == NULL) { + return NULL; + } + + #ifdef Py_GIL_DISABLED + PyUnstable_Module_SetGIL(m, Py_MOD_GIL_NOT_USED); + #endif + + return m; +} |