| /* csv module */ |
| |
| /* |
| |
| This module provides the low-level underpinnings of a CSV reading/writing |
| module. Users should not use this module directly, but import the csv.py |
| module instead. |
| |
| **** For people modifying this code, please note that as of this writing |
| **** (2003-03-23), it is intended that this code should work with Python |
| **** 2.2. |
| |
| */ |
| |
| #define MODULE_VERSION "1.0" |
| |
| #include "Python.h" |
| #include "structmember.h" |
| |
| |
| /* begin 2.2 compatibility macros */ |
| #ifndef PyDoc_STRVAR |
| /* Define macros for inline documentation. */ |
| #define PyDoc_VAR(name) static char name[] |
| #define PyDoc_STRVAR(name,str) PyDoc_VAR(name) = PyDoc_STR(str) |
| #ifdef WITH_DOC_STRINGS |
| #define PyDoc_STR(str) str |
| #else |
| #define PyDoc_STR(str) "" |
| #endif |
| #endif /* ifndef PyDoc_STRVAR */ |
| |
| #ifndef PyMODINIT_FUNC |
| # if defined(__cplusplus) |
| # define PyMODINIT_FUNC extern "C" void |
| # else /* __cplusplus */ |
| # define PyMODINIT_FUNC void |
| # endif /* __cplusplus */ |
| #endif |
| /* end 2.2 compatibility macros */ |
| |
| static PyObject *error_obj; /* CSV exception */ |
| static PyObject *dialects; /* Dialect registry */ |
| |
| typedef enum { |
| START_RECORD, START_FIELD, ESCAPED_CHAR, IN_FIELD, |
| IN_QUOTED_FIELD, ESCAPE_IN_QUOTED_FIELD, QUOTE_IN_QUOTED_FIELD |
| } ParserState; |
| |
| typedef enum { |
| QUOTE_MINIMAL, QUOTE_ALL, QUOTE_NONNUMERIC, QUOTE_NONE |
| } QuoteStyle; |
| |
| typedef struct { |
| QuoteStyle style; |
| char *name; |
| } StyleDesc; |
| |
| static StyleDesc quote_styles[] = { |
| { QUOTE_MINIMAL, "QUOTE_MINIMAL" }, |
| { QUOTE_ALL, "QUOTE_ALL" }, |
| { QUOTE_NONNUMERIC, "QUOTE_NONNUMERIC" }, |
| { QUOTE_NONE, "QUOTE_NONE" }, |
| { 0 } |
| }; |
| |
| typedef struct { |
| PyObject_HEAD |
| |
| int doublequote; /* is " represented by ""? */ |
| char delimiter; /* field separator */ |
| char quotechar; /* quote character */ |
| char escapechar; /* escape character */ |
| int skipinitialspace; /* ignore spaces following delimiter? */ |
| PyObject *lineterminator; /* string to write between records */ |
| QuoteStyle quoting; /* style of quoting to write */ |
| |
| int strict; /* raise exception on bad CSV */ |
| } DialectObj; |
| |
| staticforward PyTypeObject Dialect_Type; |
| |
| typedef struct { |
| PyObject_HEAD |
| |
| PyObject *input_iter; /* iterate over this for input lines */ |
| |
| DialectObj *dialect; /* parsing dialect */ |
| |
| PyObject *fields; /* field list for current record */ |
| ParserState state; /* current CSV parse state */ |
| char *field; /* build current field in here */ |
| int field_size; /* size of allocated buffer */ |
| int field_len; /* length of current field */ |
| int had_parse_error; /* did we have a parse error? */ |
| } ReaderObj; |
| |
| staticforward PyTypeObject Reader_Type; |
| |
| #define ReaderObject_Check(v) ((v)->ob_type == &Reader_Type) |
| |
| typedef struct { |
| PyObject_HEAD |
| |
| PyObject *writeline; /* write output lines to this file */ |
| |
| DialectObj *dialect; /* parsing dialect */ |
| |
| char *rec; /* buffer for parser.join */ |
| int rec_size; /* size of allocated record */ |
| int rec_len; /* length of record */ |
| int num_fields; /* number of fields in record */ |
| } WriterObj; |
| |
| staticforward PyTypeObject Writer_Type; |
| |
| /* |
| * DIALECT class |
| */ |
| |
| static PyObject * |
| get_dialect_from_registry(PyObject * name_obj) |
| { |
| PyObject *dialect_obj; |
| |
| dialect_obj = PyDict_GetItem(dialects, name_obj); |
| if (dialect_obj == NULL) |
| return PyErr_Format(error_obj, "unknown dialect"); |
| Py_INCREF(dialect_obj); |
| return dialect_obj; |
| } |
| |
| static int |
| check_delattr(PyObject *v) |
| { |
| if (v == NULL) { |
| PyErr_SetString(PyExc_TypeError, |
| "Cannot delete attribute"); |
| return -1; |
| } |
| return 0; |
| } |
| |
| static PyObject * |
| get_string(PyObject *str) |
| { |
| Py_XINCREF(str); |
| return str; |
| } |
| |
| static int |
| set_string(PyObject **str, PyObject *v) |
| { |
| if (check_delattr(v) < 0) |
| return -1; |
| if (!PyString_Check(v) |
| #ifdef Py_USING_UNICODE |
| && !PyUnicode_Check(v) |
| #endif |
| ) { |
| PyErr_BadArgument(); |
| return -1; |
| } |
| Py_XDECREF(*str); |
| Py_INCREF(v); |
| *str = v; |
| return 0; |
| } |
| |
| static PyObject * |
| get_nullchar_as_None(char c) |
| { |
| if (c == '\0') { |
| Py_INCREF(Py_None); |
| return Py_None; |
| } |
| else |
| return PyString_FromStringAndSize((char*)&c, 1); |
| } |
| |
| static int |
| set_None_as_nullchar(char * addr, PyObject *v) |
| { |
| if (check_delattr(v) < 0) |
| return -1; |
| if (v == Py_None) |
| *addr = '\0'; |
| else if (!PyString_Check(v) || PyString_Size(v) != 1) { |
| PyErr_BadArgument(); |
| return -1; |
| } |
| else { |
| char *s = PyString_AsString(v); |
| if (s == NULL) |
| return -1; |
| *addr = s[0]; |
| } |
| return 0; |
| } |
| |
| static PyObject * |
| Dialect_get_lineterminator(DialectObj *self) |
| { |
| return get_string(self->lineterminator); |
| } |
| |
| static int |
| Dialect_set_lineterminator(DialectObj *self, PyObject *value) |
| { |
| return set_string(&self->lineterminator, value); |
| } |
| |
| static PyObject * |
| Dialect_get_escapechar(DialectObj *self) |
| { |
| return get_nullchar_as_None(self->escapechar); |
| } |
| |
| static int |
| Dialect_set_escapechar(DialectObj *self, PyObject *value) |
| { |
| return set_None_as_nullchar(&self->escapechar, value); |
| } |
| |
| static PyObject * |
| Dialect_get_quoting(DialectObj *self) |
| { |
| return PyInt_FromLong(self->quoting); |
| } |
| |
| static int |
| Dialect_set_quoting(DialectObj *self, PyObject *v) |
| { |
| int quoting; |
| StyleDesc *qs = quote_styles; |
| |
| if (check_delattr(v) < 0) |
| return -1; |
| if (!PyInt_Check(v)) { |
| PyErr_BadArgument(); |
| return -1; |
| } |
| quoting = PyInt_AsLong(v); |
| for (qs = quote_styles; qs->name; qs++) { |
| if (qs->style == quoting) { |
| self->quoting = quoting; |
| return 0; |
| } |
| } |
| PyErr_BadArgument(); |
| return -1; |
| } |
| |
| static struct PyMethodDef Dialect_methods[] = { |
| { NULL, NULL } |
| }; |
| |
| #define D_OFF(x) offsetof(DialectObj, x) |
| |
| static struct PyMemberDef Dialect_memberlist[] = { |
| { "quotechar", T_CHAR, D_OFF(quotechar) }, |
| { "delimiter", T_CHAR, D_OFF(delimiter) }, |
| { "skipinitialspace", T_INT, D_OFF(skipinitialspace) }, |
| { "doublequote", T_INT, D_OFF(doublequote) }, |
| { "strict", T_INT, D_OFF(strict) }, |
| { NULL } |
| }; |
| |
| static PyGetSetDef Dialect_getsetlist[] = { |
| { "escapechar", (getter)Dialect_get_escapechar, |
| (setter)Dialect_set_escapechar }, |
| { "lineterminator", (getter)Dialect_get_lineterminator, |
| (setter)Dialect_set_lineterminator }, |
| { "quoting", (getter)Dialect_get_quoting, |
| (setter)Dialect_set_quoting }, |
| {NULL}, |
| }; |
| |
| static void |
| Dialect_dealloc(DialectObj *self) |
| { |
| Py_XDECREF(self->lineterminator); |
| self->ob_type->tp_free((PyObject *)self); |
| } |
| |
| static int |
| dialect_init(DialectObj * self, PyObject * args, PyObject * kwargs) |
| { |
| PyObject *dialect = NULL, *name_obj, *value_obj; |
| |
| self->quotechar = '"'; |
| self->delimiter = ','; |
| self->escapechar = '\0'; |
| self->skipinitialspace = 0; |
| Py_XDECREF(self->lineterminator); |
| self->lineterminator = PyString_FromString("\r\n"); |
| if (self->lineterminator == NULL) |
| return -1; |
| self->quoting = QUOTE_MINIMAL; |
| self->doublequote = 1; |
| self->strict = 0; |
| |
| if (!PyArg_UnpackTuple(args, "", 0, 1, &dialect)) |
| return -1; |
| Py_XINCREF(dialect); |
| if (kwargs != NULL) { |
| PyObject * key = PyString_FromString("dialect"); |
| PyObject * d; |
| |
| d = PyDict_GetItem(kwargs, key); |
| if (d) { |
| Py_INCREF(d); |
| Py_XDECREF(dialect); |
| PyDict_DelItem(kwargs, key); |
| dialect = d; |
| } |
| Py_DECREF(key); |
| } |
| if (dialect != NULL) { |
| int i; |
| PyObject * dir_list; |
| |
| /* If dialect is a string, look it up in our registry */ |
| if (PyString_Check(dialect) |
| #ifdef Py_USING_UNICODE |
| || PyUnicode_Check(dialect) |
| #endif |
| ) { |
| PyObject * new_dia; |
| new_dia = get_dialect_from_registry(dialect); |
| Py_DECREF(dialect); |
| if (new_dia == NULL) |
| return -1; |
| dialect = new_dia; |
| } |
| /* A class rather than an instance? Instantiate */ |
| if (PyObject_TypeCheck(dialect, &PyClass_Type)) { |
| PyObject * new_dia; |
| new_dia = PyObject_CallFunction(dialect, ""); |
| Py_DECREF(dialect); |
| if (new_dia == NULL) |
| return -1; |
| dialect = new_dia; |
| } |
| /* Make sure we finally have an instance */ |
| if (!PyInstance_Check(dialect) || |
| (dir_list = PyObject_Dir(dialect)) == NULL) { |
| PyErr_SetString(PyExc_TypeError, |
| "dialect must be an instance"); |
| Py_DECREF(dialect); |
| return -1; |
| } |
| /* And extract the attributes */ |
| for (i = 0; i < PyList_GET_SIZE(dir_list); ++i) { |
| char *s; |
| name_obj = PyList_GET_ITEM(dir_list, i); |
| s = PyString_AsString(name_obj); |
| if (s == NULL) |
| return -1; |
| if (s[0] == '_') |
| continue; |
| value_obj = PyObject_GetAttr(dialect, name_obj); |
| if (value_obj) { |
| if (PyObject_SetAttr((PyObject *)self, |
| name_obj, value_obj)) { |
| Py_DECREF(value_obj); |
| Py_DECREF(dir_list); |
| Py_DECREF(dialect); |
| return -1; |
| } |
| Py_DECREF(value_obj); |
| } |
| } |
| Py_DECREF(dir_list); |
| Py_DECREF(dialect); |
| } |
| if (kwargs != NULL) { |
| int pos = 0; |
| |
| while (PyDict_Next(kwargs, &pos, &name_obj, &value_obj)) { |
| if (PyObject_SetAttr((PyObject *)self, |
| name_obj, value_obj)) |
| return -1; |
| } |
| } |
| return 0; |
| } |
| |
| static PyObject * |
| dialect_new(PyTypeObject *type, PyObject *args, PyObject *kwargs) |
| { |
| DialectObj *self; |
| self = (DialectObj *)type->tp_alloc(type, 0); |
| if (self != NULL) { |
| self->lineterminator = NULL; |
| } |
| return (PyObject *)self; |
| } |
| |
| |
| PyDoc_STRVAR(Dialect_Type_doc, |
| "CSV dialect\n" |
| "\n" |
| "The Dialect type records CSV parsing and generation options.\n"); |
| |
| static PyTypeObject Dialect_Type = { |
| PyObject_HEAD_INIT(NULL) |
| 0, /* ob_size */ |
| "_csv.Dialect", /* tp_name */ |
| sizeof(DialectObj), /* tp_basicsize */ |
| 0, /* tp_itemsize */ |
| /* methods */ |
| (destructor)Dialect_dealloc, /* tp_dealloc */ |
| (printfunc)0, /* tp_print */ |
| (getattrfunc)0, /* tp_getattr */ |
| (setattrfunc)0, /* tp_setattr */ |
| (cmpfunc)0, /* tp_compare */ |
| (reprfunc)0, /* tp_repr */ |
| 0, /* tp_as_number */ |
| 0, /* tp_as_sequence */ |
| 0, /* tp_as_mapping */ |
| (hashfunc)0, /* tp_hash */ |
| (ternaryfunc)0, /* tp_call */ |
| (reprfunc)0, /* tp_str */ |
| 0, /* tp_getattro */ |
| 0, /* tp_setattro */ |
| 0, /* tp_as_buffer */ |
| Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */ |
| Dialect_Type_doc, /* tp_doc */ |
| 0, /* tp_traverse */ |
| 0, /* tp_clear */ |
| 0, /* tp_richcompare */ |
| 0, /* tp_weaklistoffset */ |
| 0, /* tp_iter */ |
| 0, /* tp_iternext */ |
| Dialect_methods, /* tp_methods */ |
| Dialect_memberlist, /* tp_members */ |
| Dialect_getsetlist, /* tp_getset */ |
| 0, /* tp_base */ |
| 0, /* tp_dict */ |
| 0, /* tp_descr_get */ |
| 0, /* tp_descr_set */ |
| 0, /* tp_dictoffset */ |
| (initproc)dialect_init, /* tp_init */ |
| PyType_GenericAlloc, /* tp_alloc */ |
| dialect_new, /* tp_new */ |
| 0, /* tp_free */ |
| }; |
| |
| static void |
| parse_save_field(ReaderObj *self) |
| { |
| PyObject *field; |
| |
| field = PyString_FromStringAndSize(self->field, self->field_len); |
| if (field != NULL) { |
| PyList_Append(self->fields, field); |
| Py_XDECREF(field); |
| } |
| self->field_len = 0; |
| } |
| |
| static int |
| parse_grow_buff(ReaderObj *self) |
| { |
| if (self->field_size == 0) { |
| self->field_size = 4096; |
| if (self->field != NULL) |
| PyMem_Free(self->field); |
| self->field = PyMem_Malloc(self->field_size); |
| } |
| else { |
| self->field_size *= 2; |
| self->field = PyMem_Realloc(self->field, self->field_size); |
| } |
| if (self->field == NULL) { |
| PyErr_NoMemory(); |
| return 0; |
| } |
| return 1; |
| } |
| |
| static void |
| parse_add_char(ReaderObj *self, char c) |
| { |
| if (self->field_len == self->field_size && !parse_grow_buff(self)) |
| return; |
| self->field[self->field_len++] = c; |
| } |
| |
| static void |
| parse_process_char(ReaderObj *self, char c) |
| { |
| DialectObj *dialect = self->dialect; |
| |
| switch (self->state) { |
| case START_RECORD: |
| /* start of record */ |
| if (c == '\n') |
| /* empty line - return [] */ |
| break; |
| /* normal character - handle as START_FIELD */ |
| self->state = START_FIELD; |
| /* fallthru */ |
| case START_FIELD: |
| /* expecting field */ |
| if (c == '\n') { |
| /* save empty field - return [fields] */ |
| parse_save_field(self); |
| self->state = START_RECORD; |
| } |
| else if (c == dialect->quotechar) { |
| /* start quoted field */ |
| self->state = IN_QUOTED_FIELD; |
| } |
| else if (c == dialect->escapechar) { |
| /* possible escaped character */ |
| self->state = ESCAPED_CHAR; |
| } |
| else if (c == ' ' && dialect->skipinitialspace) |
| /* ignore space at start of field */ |
| ; |
| else if (c == dialect->delimiter) { |
| /* save empty field */ |
| parse_save_field(self); |
| } |
| else { |
| /* begin new unquoted field */ |
| parse_add_char(self, c); |
| self->state = IN_FIELD; |
| } |
| break; |
| |
| case ESCAPED_CHAR: |
| if (c != dialect->escapechar && |
| c != dialect->delimiter && |
| c != dialect->quotechar) |
| parse_add_char(self, dialect->escapechar); |
| parse_add_char(self, c); |
| self->state = IN_FIELD; |
| break; |
| |
| case IN_FIELD: |
| /* in unquoted field */ |
| if (c == '\n') { |
| /* end of line - return [fields] */ |
| parse_save_field(self); |
| self->state = START_RECORD; |
| } |
| else if (c == dialect->escapechar) { |
| /* possible escaped character */ |
| self->state = ESCAPED_CHAR; |
| } |
| else if (c == dialect->delimiter) { |
| /* save field - wait for new field */ |
| parse_save_field(self); |
| self->state = START_FIELD; |
| } |
| else { |
| /* normal character - save in field */ |
| parse_add_char(self, c); |
| } |
| break; |
| |
| case IN_QUOTED_FIELD: |
| /* in quoted field */ |
| if (c == '\n') { |
| /* end of line - save '\n' in field */ |
| parse_add_char(self, '\n'); |
| } |
| else if (c == dialect->escapechar) { |
| /* Possible escape character */ |
| self->state = ESCAPE_IN_QUOTED_FIELD; |
| } |
| else if (c == dialect->quotechar) { |
| if (dialect->doublequote) { |
| /* doublequote; " represented by "" */ |
| self->state = QUOTE_IN_QUOTED_FIELD; |
| } |
| else { |
| /* end of quote part of field */ |
| self->state = IN_FIELD; |
| } |
| } |
| else { |
| /* normal character - save in field */ |
| parse_add_char(self, c); |
| } |
| break; |
| |
| case ESCAPE_IN_QUOTED_FIELD: |
| if (c != dialect->escapechar && |
| c != dialect->delimiter && |
| c != dialect->quotechar) |
| parse_add_char(self, dialect->escapechar); |
| parse_add_char(self, c); |
| self->state = IN_QUOTED_FIELD; |
| break; |
| |
| case QUOTE_IN_QUOTED_FIELD: |
| /* doublequote - seen a quote in an quoted field */ |
| if (dialect->quoting != QUOTE_NONE && |
| c == dialect->quotechar) { |
| /* save "" as " */ |
| parse_add_char(self, c); |
| self->state = IN_QUOTED_FIELD; |
| } |
| else if (c == dialect->delimiter) { |
| /* save field - wait for new field */ |
| parse_save_field(self); |
| self->state = START_FIELD; |
| } |
| else if (c == '\n') { |
| /* end of line - return [fields] */ |
| parse_save_field(self); |
| self->state = START_RECORD; |
| } |
| else if (!dialect->strict) { |
| parse_add_char(self, c); |
| self->state = IN_FIELD; |
| } |
| else { |
| /* illegal */ |
| self->had_parse_error = 1; |
| PyErr_Format(error_obj, "%c expected after %c", |
| dialect->delimiter, |
| dialect->quotechar); |
| } |
| break; |
| |
| } |
| } |
| |
| /* |
| * READER |
| */ |
| #define R_OFF(x) offsetof(ReaderObj, x) |
| |
| static struct PyMemberDef Reader_memberlist[] = { |
| { "dialect", T_OBJECT, R_OFF(dialect), RO }, |
| { NULL } |
| }; |
| |
| static PyObject * |
| Reader_getiter(ReaderObj *self) |
| { |
| Py_INCREF(self); |
| return (PyObject *)self; |
| } |
| |
| static PyObject * |
| Reader_iternext(ReaderObj *self) |
| { |
| PyObject *lineobj; |
| PyObject *fields; |
| char *line; |
| |
| do { |
| lineobj = PyIter_Next(self->input_iter); |
| if (lineobj == NULL) { |
| /* End of input OR exception */ |
| if (!PyErr_Occurred() && self->field_len != 0) |
| return PyErr_Format(error_obj, |
| "newline inside string"); |
| return NULL; |
| } |
| |
| if (self->had_parse_error) { |
| if (self->fields) { |
| Py_XDECREF(self->fields); |
| } |
| self->fields = PyList_New(0); |
| self->field_len = 0; |
| self->state = START_RECORD; |
| self->had_parse_error = 0; |
| } |
| line = PyString_AsString(lineobj); |
| |
| if (line == NULL) { |
| Py_DECREF(lineobj); |
| return NULL; |
| } |
| if (strlen(line) < (size_t)PyString_GET_SIZE(lineobj)) { |
| self->had_parse_error = 1; |
| Py_DECREF(lineobj); |
| return PyErr_Format(error_obj, |
| "string with NUL bytes"); |
| } |
| |
| /* Process line of text - send '\n' to processing code to |
| represent end of line. End of line which is not at end of |
| string is an error. */ |
| while (*line) { |
| char c; |
| |
| c = *line++; |
| if (c == '\r') { |
| c = *line++; |
| if (c == '\0') |
| /* macintosh end of line */ |
| break; |
| if (c == '\n') { |
| c = *line++; |
| if (c == '\0') |
| /* DOS end of line */ |
| break; |
| } |
| self->had_parse_error = 1; |
| Py_DECREF(lineobj); |
| return PyErr_Format(error_obj, |
| "newline inside string"); |
| } |
| if (c == '\n') { |
| c = *line++; |
| if (c == '\0') |
| /* unix end of line */ |
| break; |
| self->had_parse_error = 1; |
| Py_DECREF(lineobj); |
| return PyErr_Format(error_obj, |
| "newline inside string"); |
| } |
| parse_process_char(self, c); |
| if (PyErr_Occurred()) { |
| Py_DECREF(lineobj); |
| return NULL; |
| } |
| } |
| parse_process_char(self, '\n'); |
| Py_DECREF(lineobj); |
| } while (self->state != START_RECORD); |
| |
| fields = self->fields; |
| self->fields = PyList_New(0); |
| return fields; |
| } |
| |
| static void |
| Reader_dealloc(ReaderObj *self) |
| { |
| Py_XDECREF(self->dialect); |
| Py_XDECREF(self->input_iter); |
| Py_XDECREF(self->fields); |
| if (self->field != NULL) |
| PyMem_Free(self->field); |
| PyObject_GC_Del(self); |
| } |
| |
| static int |
| Reader_traverse(ReaderObj *self, visitproc visit, void *arg) |
| { |
| int err; |
| #define VISIT(SLOT) \ |
| if (SLOT) { \ |
| err = visit((PyObject *)(SLOT), arg); \ |
| if (err) \ |
| return err; \ |
| } |
| VISIT(self->dialect); |
| VISIT(self->input_iter); |
| VISIT(self->fields); |
| return 0; |
| } |
| |
| static int |
| Reader_clear(ReaderObj *self) |
| { |
| Py_XDECREF(self->dialect); |
| Py_XDECREF(self->input_iter); |
| Py_XDECREF(self->fields); |
| self->dialect = NULL; |
| self->input_iter = NULL; |
| self->fields = NULL; |
| return 0; |
| } |
| |
| PyDoc_STRVAR(Reader_Type_doc, |
| "CSV reader\n" |
| "\n" |
| "Reader objects are responsible for reading and parsing tabular data\n" |
| "in CSV format.\n" |
| ); |
| |
| static struct PyMethodDef Reader_methods[] = { |
| { NULL, NULL } |
| }; |
| |
| static PyTypeObject Reader_Type = { |
| PyObject_HEAD_INIT(NULL) |
| 0, /*ob_size*/ |
| "_csv.reader", /*tp_name*/ |
| sizeof(ReaderObj), /*tp_basicsize*/ |
| 0, /*tp_itemsize*/ |
| /* methods */ |
| (destructor)Reader_dealloc, /*tp_dealloc*/ |
| (printfunc)0, /*tp_print*/ |
| (getattrfunc)0, /*tp_getattr*/ |
| (setattrfunc)0, /*tp_setattr*/ |
| (cmpfunc)0, /*tp_compare*/ |
| (reprfunc)0, /*tp_repr*/ |
| 0, /*tp_as_number*/ |
| 0, /*tp_as_sequence*/ |
| 0, /*tp_as_mapping*/ |
| (hashfunc)0, /*tp_hash*/ |
| (ternaryfunc)0, /*tp_call*/ |
| (reprfunc)0, /*tp_str*/ |
| 0, /*tp_getattro*/ |
| 0, /*tp_setattro*/ |
| 0, /*tp_as_buffer*/ |
| Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | |
| Py_TPFLAGS_HAVE_GC, /*tp_flags*/ |
| Reader_Type_doc, /*tp_doc*/ |
| (traverseproc)Reader_traverse, /*tp_traverse*/ |
| (inquiry)Reader_clear, /*tp_clear*/ |
| 0, /*tp_richcompare*/ |
| 0, /*tp_weaklistoffset*/ |
| (getiterfunc)Reader_getiter, /*tp_iter*/ |
| (getiterfunc)Reader_iternext, /*tp_iternext*/ |
| Reader_methods, /*tp_methods*/ |
| Reader_memberlist, /*tp_members*/ |
| 0, /*tp_getset*/ |
| |
| }; |
| |
| static PyObject * |
| csv_reader(PyObject *module, PyObject *args, PyObject *keyword_args) |
| { |
| PyObject * iterator, * dialect = NULL, *ctor_args; |
| ReaderObj * self = PyObject_GC_New(ReaderObj, &Reader_Type); |
| |
| if (!self) |
| return NULL; |
| |
| self->dialect = NULL; |
| self->input_iter = self->fields = NULL; |
| |
| self->fields = NULL; |
| self->input_iter = NULL; |
| self->had_parse_error = 0; |
| self->field = NULL; |
| self->field_size = 0; |
| self->field_len = 0; |
| self->state = START_RECORD; |
| |
| if (!PyArg_UnpackTuple(args, "", 1, 2, &iterator, &dialect)) { |
| Py_DECREF(self); |
| return NULL; |
| } |
| self->input_iter = PyObject_GetIter(iterator); |
| if (self->input_iter == NULL) { |
| PyErr_SetString(PyExc_TypeError, |
| "argument 1 must be an iterator"); |
| Py_DECREF(self); |
| return NULL; |
| } |
| ctor_args = Py_BuildValue(dialect ? "(O)" : "()", dialect); |
| if (ctor_args == NULL) { |
| Py_DECREF(self); |
| return NULL; |
| } |
| self->dialect = (DialectObj *)PyObject_Call((PyObject *)&Dialect_Type, |
| ctor_args, keyword_args); |
| Py_DECREF(ctor_args); |
| if (self->dialect == NULL) { |
| Py_DECREF(self); |
| return NULL; |
| } |
| self->fields = PyList_New(0); |
| if (self->fields == NULL) { |
| Py_DECREF(self); |
| return NULL; |
| } |
| |
| return (PyObject *)self; |
| } |
| |
| /* |
| * WRITER |
| */ |
| /* ---------------------------------------------------------------- */ |
| static void |
| join_reset(WriterObj *self) |
| { |
| self->rec_len = 0; |
| self->num_fields = 0; |
| } |
| |
| #define MEM_INCR 32768 |
| |
| /* Calculate new record length or append field to record. Return new |
| * record length. |
| */ |
| static int |
| join_append_data(WriterObj *self, char *field, int quote_empty, |
| int *quoted, int copy_phase) |
| { |
| DialectObj *dialect = self->dialect; |
| int i, rec_len; |
| |
| rec_len = self->rec_len; |
| |
| /* If this is not the first field we need a field separator. |
| */ |
| if (self->num_fields > 0) { |
| if (copy_phase) |
| self->rec[rec_len] = dialect->delimiter; |
| rec_len++; |
| } |
| /* Handle preceding quote. |
| */ |
| switch (dialect->quoting) { |
| case QUOTE_ALL: |
| *quoted = 1; |
| if (copy_phase) |
| self->rec[rec_len] = dialect->quotechar; |
| rec_len++; |
| break; |
| case QUOTE_MINIMAL: |
| case QUOTE_NONNUMERIC: |
| /* We only know about quoted in the copy phase. |
| */ |
| if (copy_phase && *quoted) { |
| self->rec[rec_len] = dialect->quotechar; |
| rec_len++; |
| } |
| break; |
| case QUOTE_NONE: |
| break; |
| } |
| /* Copy/count field data. |
| */ |
| for (i = 0;; i++) { |
| char c = field[i]; |
| |
| if (c == '\0') |
| break; |
| /* If in doublequote mode we escape quote chars with a |
| * quote. |
| */ |
| if (dialect->quoting != QUOTE_NONE && |
| c == dialect->quotechar && dialect->doublequote) { |
| if (copy_phase) |
| self->rec[rec_len] = dialect->quotechar; |
| *quoted = 1; |
| rec_len++; |
| } |
| |
| /* Some special characters need to be escaped. If we have a |
| * quote character switch to quoted field instead of escaping |
| * individual characters. |
| */ |
| if (!*quoted |
| && (c == dialect->delimiter || |
| c == dialect->escapechar || |
| c == '\n' || c == '\r')) { |
| if (dialect->quoting != QUOTE_NONE) |
| *quoted = 1; |
| else if (dialect->escapechar) { |
| if (copy_phase) |
| self->rec[rec_len] = dialect->escapechar; |
| rec_len++; |
| } |
| else { |
| PyErr_Format(error_obj, |
| "delimiter must be quoted or escaped"); |
| return -1; |
| } |
| } |
| /* Copy field character into record buffer. |
| */ |
| if (copy_phase) |
| self->rec[rec_len] = c; |
| rec_len++; |
| } |
| |
| /* If field is empty check if it needs to be quoted. |
| */ |
| if (i == 0 && quote_empty) { |
| if (dialect->quoting == QUOTE_NONE) { |
| PyErr_Format(error_obj, |
| "single empty field record must be quoted"); |
| return -1; |
| } else |
| *quoted = 1; |
| } |
| |
| /* Handle final quote character on field. |
| */ |
| if (*quoted) { |
| if (copy_phase) |
| self->rec[rec_len] = dialect->quotechar; |
| else |
| /* Didn't know about leading quote until we found it |
| * necessary in field data - compensate for it now. |
| */ |
| rec_len++; |
| rec_len++; |
| } |
| |
| return rec_len; |
| } |
| |
| static int |
| join_check_rec_size(WriterObj *self, int rec_len) |
| { |
| if (rec_len > self->rec_size) { |
| if (self->rec_size == 0) { |
| self->rec_size = (rec_len / MEM_INCR + 1) * MEM_INCR; |
| if (self->rec != NULL) |
| PyMem_Free(self->rec); |
| self->rec = PyMem_Malloc(self->rec_size); |
| } |
| else { |
| char *old_rec = self->rec; |
| |
| self->rec_size = (rec_len / MEM_INCR + 1) * MEM_INCR; |
| self->rec = PyMem_Realloc(self->rec, self->rec_size); |
| if (self->rec == NULL) |
| PyMem_Free(old_rec); |
| } |
| if (self->rec == NULL) { |
| PyErr_NoMemory(); |
| return 0; |
| } |
| } |
| return 1; |
| } |
| |
| static int |
| join_append(WriterObj *self, char *field, int *quoted, int quote_empty) |
| { |
| int rec_len; |
| |
| rec_len = join_append_data(self, field, quote_empty, quoted, 0); |
| if (rec_len < 0) |
| return 0; |
| |
| /* grow record buffer if necessary */ |
| if (!join_check_rec_size(self, rec_len)) |
| return 0; |
| |
| self->rec_len = join_append_data(self, field, quote_empty, quoted, 1); |
| self->num_fields++; |
| |
| return 1; |
| } |
| |
| static int |
| join_append_lineterminator(WriterObj *self) |
| { |
| int terminator_len; |
| |
| terminator_len = PyString_Size(self->dialect->lineterminator); |
| |
| /* grow record buffer if necessary */ |
| if (!join_check_rec_size(self, self->rec_len + terminator_len)) |
| return 0; |
| |
| memmove(self->rec + self->rec_len, |
| /* should not be NULL */ |
| PyString_AsString(self->dialect->lineterminator), |
| terminator_len); |
| self->rec_len += terminator_len; |
| |
| return 1; |
| } |
| |
| PyDoc_STRVAR(csv_writerow_doc, |
| "writerow(sequence)\n" |
| "\n" |
| "Construct and write a CSV record from a sequence of fields. Non-string\n" |
| "elements will be converted to string."); |
| |
| static PyObject * |
| csv_writerow(WriterObj *self, PyObject *seq) |
| { |
| DialectObj *dialect = self->dialect; |
| int len, i; |
| |
| if (!PySequence_Check(seq)) |
| return PyErr_Format(error_obj, "sequence expected"); |
| |
| len = PySequence_Length(seq); |
| if (len < 0) |
| return NULL; |
| |
| /* Join all fields in internal buffer. |
| */ |
| join_reset(self); |
| for (i = 0; i < len; i++) { |
| PyObject *field; |
| int append_ok; |
| int quoted; |
| |
| field = PySequence_GetItem(seq, i); |
| if (field == NULL) |
| return NULL; |
| |
| quoted = 0; |
| if (dialect->quoting == QUOTE_NONNUMERIC) { |
| PyObject *num; |
| |
| num = PyNumber_Float(field); |
| if (num == NULL) { |
| quoted = 1; |
| PyErr_Clear(); |
| } |
| else { |
| Py_DECREF(num); |
| } |
| } |
| |
| if (PyString_Check(field)) { |
| append_ok = join_append(self, |
| PyString_AS_STRING(field), |
| "ed, len == 1); |
| Py_DECREF(field); |
| } |
| else if (field == Py_None) { |
| append_ok = join_append(self, "", "ed, len == 1); |
| Py_DECREF(field); |
| } |
| else { |
| PyObject *str; |
| |
| str = PyObject_Str(field); |
| Py_DECREF(field); |
| if (str == NULL) |
| return NULL; |
| |
| append_ok = join_append(self, PyString_AS_STRING(str), |
| "ed, len == 1); |
| Py_DECREF(str); |
| } |
| if (!append_ok) |
| return NULL; |
| } |
| |
| /* Add line terminator. |
| */ |
| if (!join_append_lineterminator(self)) |
| return 0; |
| |
| return PyObject_CallFunction(self->writeline, |
| "(s#)", self->rec, self->rec_len); |
| } |
| |
| PyDoc_STRVAR(csv_writerows_doc, |
| "writerows(sequence of sequences)\n" |
| "\n" |
| "Construct and write a series of sequences to a csv file. Non-string\n" |
| "elements will be converted to string."); |
| |
| static PyObject * |
| csv_writerows(WriterObj *self, PyObject *seqseq) |
| { |
| PyObject *row_iter, *row_obj, *result; |
| |
| row_iter = PyObject_GetIter(seqseq); |
| if (row_iter == NULL) { |
| PyErr_SetString(PyExc_TypeError, |
| "writerows() argument must be iterable"); |
| return NULL; |
| } |
| while ((row_obj = PyIter_Next(row_iter))) { |
| result = csv_writerow(self, row_obj); |
| Py_DECREF(row_obj); |
| if (!result) { |
| Py_DECREF(row_iter); |
| return NULL; |
| } |
| else |
| Py_DECREF(result); |
| } |
| Py_DECREF(row_iter); |
| if (PyErr_Occurred()) |
| return NULL; |
| Py_INCREF(Py_None); |
| return Py_None; |
| } |
| |
| static struct PyMethodDef Writer_methods[] = { |
| { "writerow", (PyCFunction)csv_writerow, METH_O, csv_writerow_doc}, |
| { "writerows", (PyCFunction)csv_writerows, METH_O, csv_writerows_doc}, |
| { NULL, NULL } |
| }; |
| |
| #define W_OFF(x) offsetof(WriterObj, x) |
| |
| static struct PyMemberDef Writer_memberlist[] = { |
| { "dialect", T_OBJECT, W_OFF(dialect), RO }, |
| { NULL } |
| }; |
| |
| static void |
| Writer_dealloc(WriterObj *self) |
| { |
| Py_XDECREF(self->dialect); |
| Py_XDECREF(self->writeline); |
| if (self->rec != NULL) |
| PyMem_Free(self->rec); |
| PyObject_GC_Del(self); |
| } |
| |
| static int |
| Writer_traverse(WriterObj *self, visitproc visit, void *arg) |
| { |
| int err; |
| #define VISIT(SLOT) \ |
| if (SLOT) { \ |
| err = visit((PyObject *)(SLOT), arg); \ |
| if (err) \ |
| return err; \ |
| } |
| VISIT(self->dialect); |
| VISIT(self->writeline); |
| return 0; |
| } |
| |
| static int |
| Writer_clear(WriterObj *self) |
| { |
| Py_XDECREF(self->dialect); |
| Py_XDECREF(self->writeline); |
| self->dialect = NULL; |
| self->writeline = NULL; |
| return 0; |
| } |
| |
| PyDoc_STRVAR(Writer_Type_doc, |
| "CSV writer\n" |
| "\n" |
| "Writer objects are responsible for generating tabular data\n" |
| "in CSV format from sequence input.\n" |
| ); |
| |
| static PyTypeObject Writer_Type = { |
| PyObject_HEAD_INIT(NULL) |
| 0, /*ob_size*/ |
| "_csv.writer", /*tp_name*/ |
| sizeof(WriterObj), /*tp_basicsize*/ |
| 0, /*tp_itemsize*/ |
| /* methods */ |
| (destructor)Writer_dealloc, /*tp_dealloc*/ |
| (printfunc)0, /*tp_print*/ |
| (getattrfunc)0, /*tp_getattr*/ |
| (setattrfunc)0, /*tp_setattr*/ |
| (cmpfunc)0, /*tp_compare*/ |
| (reprfunc)0, /*tp_repr*/ |
| 0, /*tp_as_number*/ |
| 0, /*tp_as_sequence*/ |
| 0, /*tp_as_mapping*/ |
| (hashfunc)0, /*tp_hash*/ |
| (ternaryfunc)0, /*tp_call*/ |
| (reprfunc)0, /*tp_str*/ |
| 0, /*tp_getattro*/ |
| 0, /*tp_setattro*/ |
| 0, /*tp_as_buffer*/ |
| Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | |
| Py_TPFLAGS_HAVE_GC, /*tp_flags*/ |
| Writer_Type_doc, |
| (traverseproc)Writer_traverse, /*tp_traverse*/ |
| (inquiry)Writer_clear, /*tp_clear*/ |
| 0, /*tp_richcompare*/ |
| 0, /*tp_weaklistoffset*/ |
| (getiterfunc)0, /*tp_iter*/ |
| (getiterfunc)0, /*tp_iternext*/ |
| Writer_methods, /*tp_methods*/ |
| Writer_memberlist, /*tp_members*/ |
| 0, /*tp_getset*/ |
| }; |
| |
| static PyObject * |
| csv_writer(PyObject *module, PyObject *args, PyObject *keyword_args) |
| { |
| PyObject * output_file, * dialect = NULL, *ctor_args; |
| WriterObj * self = PyObject_GC_New(WriterObj, &Writer_Type); |
| |
| if (!self) |
| return NULL; |
| |
| self->dialect = NULL; |
| self->writeline = NULL; |
| |
| self->rec = NULL; |
| self->rec_size = 0; |
| self->rec_len = 0; |
| self->num_fields = 0; |
| |
| if (!PyArg_UnpackTuple(args, "", 1, 2, &output_file, &dialect)) { |
| Py_DECREF(self); |
| return NULL; |
| } |
| self->writeline = PyObject_GetAttrString(output_file, "write"); |
| if (self->writeline == NULL || !PyCallable_Check(self->writeline)) { |
| PyErr_SetString(PyExc_TypeError, |
| "argument 1 must be an instance with a write method"); |
| Py_DECREF(self); |
| return NULL; |
| } |
| ctor_args = Py_BuildValue(dialect ? "(O)" : "()", dialect); |
| if (ctor_args == NULL) { |
| Py_DECREF(self); |
| return NULL; |
| } |
| self->dialect = (DialectObj *)PyObject_Call((PyObject *)&Dialect_Type, |
| ctor_args, keyword_args); |
| Py_DECREF(ctor_args); |
| if (self->dialect == NULL) { |
| Py_DECREF(self); |
| return NULL; |
| } |
| return (PyObject *)self; |
| } |
| |
| /* |
| * DIALECT REGISTRY |
| */ |
| static PyObject * |
| csv_list_dialects(PyObject *module, PyObject *args) |
| { |
| return PyDict_Keys(dialects); |
| } |
| |
| static PyObject * |
| csv_register_dialect(PyObject *module, PyObject *args) |
| { |
| PyObject *name_obj, *dialect_obj; |
| |
| if (!PyArg_UnpackTuple(args, "", 2, 2, &name_obj, &dialect_obj)) |
| return NULL; |
| if (!PyString_Check(name_obj) |
| #ifdef Py_USING_UNICODE |
| && !PyUnicode_Check(name_obj) |
| #endif |
| ) { |
| PyErr_SetString(PyExc_TypeError, |
| "dialect name must be a string or unicode"); |
| return NULL; |
| } |
| Py_INCREF(dialect_obj); |
| /* A class rather than an instance? Instanciate */ |
| if (PyObject_TypeCheck(dialect_obj, &PyClass_Type)) { |
| PyObject * new_dia; |
| new_dia = PyObject_CallFunction(dialect_obj, ""); |
| Py_DECREF(dialect_obj); |
| if (new_dia == NULL) |
| return NULL; |
| dialect_obj = new_dia; |
| } |
| /* Make sure we finally have an instance */ |
| if (!PyInstance_Check(dialect_obj)) { |
| PyErr_SetString(PyExc_TypeError, "dialect must be an instance"); |
| Py_DECREF(dialect_obj); |
| return NULL; |
| } |
| if (PyObject_SetAttrString(dialect_obj, "_name", name_obj) < 0) { |
| Py_DECREF(dialect_obj); |
| return NULL; |
| } |
| if (PyDict_SetItem(dialects, name_obj, dialect_obj) < 0) { |
| Py_DECREF(dialect_obj); |
| return NULL; |
| } |
| Py_DECREF(dialect_obj); |
| Py_INCREF(Py_None); |
| return Py_None; |
| } |
| |
| static PyObject * |
| csv_unregister_dialect(PyObject *module, PyObject *name_obj) |
| { |
| if (PyDict_DelItem(dialects, name_obj) < 0) |
| return PyErr_Format(error_obj, "unknown dialect"); |
| Py_INCREF(Py_None); |
| return Py_None; |
| } |
| |
| static PyObject * |
| csv_get_dialect(PyObject *module, PyObject *name_obj) |
| { |
| return get_dialect_from_registry(name_obj); |
| } |
| |
| /* |
| * MODULE |
| */ |
| |
| PyDoc_STRVAR(csv_module_doc, |
| "CSV parsing and writing.\n" |
| "\n" |
| "This module provides classes that assist in the reading and writing\n" |
| "of Comma Separated Value (CSV) files, and implements the interface\n" |
| "described by PEP 305. Although many CSV files are simple to parse,\n" |
| "the format is not formally defined by a stable specification and\n" |
| "is subtle enough that parsing lines of a CSV file with something\n" |
| "like line.split(\",\") is bound to fail. The module supports three\n" |
| "basic APIs: reading, writing, and registration of dialects.\n" |
| "\n" |
| "\n" |
| "DIALECT REGISTRATION:\n" |
| "\n" |
| "Readers and writers support a dialect argument, which is a convenient\n" |
| "handle on a group of settings. When the dialect argument is a string,\n" |
| "it identifies one of the dialects previously registered with the module.\n" |
| "If it is a class or instance, the attributes of the argument are used as\n" |
| "the settings for the reader or writer:\n" |
| "\n" |
| " class excel:\n" |
| " delimiter = ','\n" |
| " quotechar = '\"'\n" |
| " escapechar = None\n" |
| " doublequote = True\n" |
| " skipinitialspace = False\n" |
| " lineterminator = '\\r\\n'\n" |
| " quoting = QUOTE_MINIMAL\n" |
| "\n" |
| "SETTINGS:\n" |
| "\n" |
| " * quotechar - specifies a one-character string to use as the \n" |
| " quoting character. It defaults to '\"'.\n" |
| " * delimiter - specifies a one-character string to use as the \n" |
| " field separator. It defaults to ','.\n" |
| " * skipinitialspace - specifies how to interpret whitespace which\n" |
| " immediately follows a delimiter. It defaults to False, which\n" |
| " means that whitespace immediately following a delimiter is part\n" |
| " of the following field.\n" |
| " * lineterminator - specifies the character sequence which should \n" |
| " terminate rows.\n" |
| " * quoting - controls when quotes should be generated by the writer.\n" |
| " It can take on any of the following module constants:\n" |
| "\n" |
| " csv.QUOTE_MINIMAL means only when required, for example, when a\n" |
| " field contains either the quotechar or the delimiter\n" |
| " csv.QUOTE_ALL means that quotes are always placed around fields.\n" |
| " csv.QUOTE_NONNUMERIC means that quotes are always placed around\n" |
| " fields which do not parse as integers or floating point\n" |
| " numbers.\n" |
| " csv.QUOTE_NONE means that quotes are never placed around fields.\n" |
| " * escapechar - specifies a one-character string used to escape \n" |
| " the delimiter when quoting is set to QUOTE_NONE.\n" |
| " * doublequote - controls the handling of quotes inside fields. When\n" |
| " True, two consecutive quotes are interpreted as one during read,\n" |
| " and when writing, each quote character embedded in the data is\n" |
| " written as two quotes\n"); |
| |
| PyDoc_STRVAR(csv_reader_doc, |
| " csv_reader = reader(iterable [, dialect='excel']\n" |
| " [optional keyword args])\n" |
| " for row in csv_reader:\n" |
| " process(row)\n" |
| "\n" |
| "The \"iterable\" argument can be any object that returns a line\n" |
| "of input for each iteration, such as a file object or a list. The\n" |
| "optional \"dialect\" parameter is discussed below. The function\n" |
| "also accepts optional keyword arguments which override settings\n" |
| "provided by the dialect.\n" |
| "\n" |
| "The returned object is an iterator. Each iteration returns a row\n" |
| "of the CSV file (which can span multiple input lines):\n"); |
| |
| PyDoc_STRVAR(csv_writer_doc, |
| " csv_writer = csv.writer(fileobj [, dialect='excel']\n" |
| " [optional keyword args])\n" |
| " for row in csv_writer:\n" |
| " csv_writer.writerow(row)\n" |
| "\n" |
| " [or]\n" |
| "\n" |
| " csv_writer = csv.writer(fileobj [, dialect='excel']\n" |
| " [optional keyword args])\n" |
| " csv_writer.writerows(rows)\n" |
| "\n" |
| "The \"fileobj\" argument can be any object that supports the file API.\n"); |
| |
| PyDoc_STRVAR(csv_list_dialects_doc, |
| "Return a list of all know dialect names.\n" |
| " names = csv.list_dialects()"); |
| |
| PyDoc_STRVAR(csv_get_dialect_doc, |
| "Return the dialect instance associated with name.\n" |
| " dialect = csv.get_dialect(name)"); |
| |
| PyDoc_STRVAR(csv_register_dialect_doc, |
| "Create a mapping from a string name to a dialect class.\n" |
| " dialect = csv.register_dialect(name, dialect)"); |
| |
| PyDoc_STRVAR(csv_unregister_dialect_doc, |
| "Delete the name/dialect mapping associated with a string name.\n" |
| " csv.unregister_dialect(name)"); |
| |
| static struct PyMethodDef csv_methods[] = { |
| { "reader", (PyCFunction)csv_reader, |
| METH_VARARGS | METH_KEYWORDS, csv_reader_doc}, |
| { "writer", (PyCFunction)csv_writer, |
| METH_VARARGS | METH_KEYWORDS, csv_writer_doc}, |
| { "list_dialects", (PyCFunction)csv_list_dialects, |
| METH_NOARGS, csv_list_dialects_doc}, |
| { "register_dialect", (PyCFunction)csv_register_dialect, |
| METH_VARARGS, csv_register_dialect_doc}, |
| { "unregister_dialect", (PyCFunction)csv_unregister_dialect, |
| METH_O, csv_unregister_dialect_doc}, |
| { "get_dialect", (PyCFunction)csv_get_dialect, |
| METH_O, csv_get_dialect_doc}, |
| { NULL, NULL } |
| }; |
| |
| PyMODINIT_FUNC |
| init_csv(void) |
| { |
| PyObject *module; |
| StyleDesc *style; |
| |
| if (PyType_Ready(&Dialect_Type) < 0) |
| return; |
| |
| if (PyType_Ready(&Reader_Type) < 0) |
| return; |
| |
| if (PyType_Ready(&Writer_Type) < 0) |
| return; |
| |
| /* Create the module and add the functions */ |
| module = Py_InitModule3("_csv", csv_methods, csv_module_doc); |
| if (module == NULL) |
| return; |
| |
| /* Add version to the module. */ |
| if (PyModule_AddStringConstant(module, "__version__", |
| MODULE_VERSION) == -1) |
| return; |
| |
| /* Add _dialects dictionary */ |
| dialects = PyDict_New(); |
| if (dialects == NULL) |
| return; |
| if (PyModule_AddObject(module, "_dialects", dialects)) |
| return; |
| |
| /* Add quote styles into dictionary */ |
| for (style = quote_styles; style->name; style++) { |
| if (PyModule_AddIntConstant(module, style->name, |
| style->style) == -1) |
| return; |
| } |
| |
| /* Add the Dialect type */ |
| if (PyModule_AddObject(module, "Dialect", (PyObject *)&Dialect_Type)) |
| return; |
| |
| /* Add the CSV exception object to the module. */ |
| error_obj = PyErr_NewException("_csv.Error", NULL, NULL); |
| if (error_obj == NULL) |
| return; |
| PyModule_AddObject(module, "Error", error_obj); |
| } |