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plpy_util.c File Reference
#include "postgres.h"
#include "mb/pg_wchar.h"
#include "plpy_elog.h"
#include "plpy_util.h"
#include "plpython.h"
Include dependency graph for plpy_util.c:

Go to the source code of this file.

Functions

PyObject * PLyUnicode_Bytes (PyObject *unicode)
 
char * PLyUnicode_AsString (PyObject *unicode)
 
PyObject * PLyUnicode_FromStringAndSize (const char *s, Py_ssize_t size)
 
PyObject * PLyUnicode_FromString (const char *s)
 

Function Documentation

◆ PLyUnicode_AsString()

char * PLyUnicode_AsString ( PyObject *  unicode)

Definition at line 82 of file plpy_util.c.

83{
84 PyObject *o = PLyUnicode_Bytes(unicode);
85 char *rv = pstrdup(PyBytes_AsString(o));
86
87 Py_XDECREF(o);
88 return rv;
89}
char * pstrdup(const char *in)
Definition: mcxt.c:1696
PyObject * PLyUnicode_Bytes(PyObject *unicode)
Definition: plpy_util.c:20

References PLyUnicode_Bytes(), and pstrdup().

Referenced by get_string_attr(), object_to_string(), PLy_cursor_plan(), PLy_exec_trigger(), PLy_get_sqlerrcode(), PLy_modify_tuple(), PLy_output(), PLy_spi_execute_plan(), PLy_spi_prepare(), and PLy_traceback().

◆ PLyUnicode_Bytes()

PyObject * PLyUnicode_Bytes ( PyObject *  unicode)

Definition at line 20 of file plpy_util.c.

21{
22 PyObject *bytes,
23 *rv;
24 char *utf8string,
25 *encoded;
26
27 /* First encode the Python unicode object with UTF-8. */
28 bytes = PyUnicode_AsUTF8String(unicode);
29 if (bytes == NULL)
30 PLy_elog(ERROR, "could not convert Python Unicode object to bytes");
31
32 utf8string = PyBytes_AsString(bytes);
33 if (utf8string == NULL)
34 {
35 Py_DECREF(bytes);
36 PLy_elog(ERROR, "could not extract bytes from encoded string");
37 }
38
39 /*
40 * Then convert to server encoding if necessary.
41 *
42 * PyUnicode_AsEncodedString could be used to encode the object directly
43 * in the server encoding, but Python doesn't support all the encodings
44 * that PostgreSQL does (EUC_TW and MULE_INTERNAL). UTF-8 is used as an
45 * intermediary in PLyUnicode_FromString as well.
46 */
48 {
49 PG_TRY();
50 {
51 encoded = pg_any_to_server(utf8string,
52 strlen(utf8string),
53 PG_UTF8);
54 }
55 PG_CATCH();
56 {
57 Py_DECREF(bytes);
59 }
60 PG_END_TRY();
61 }
62 else
63 encoded = utf8string;
64
65 /* finally, build a bytes object in the server encoding */
66 rv = PyBytes_FromStringAndSize(encoded, strlen(encoded));
67
68 /* if pg_any_to_server allocated memory, free it now */
69 if (utf8string != encoded)
70 pfree(encoded);
71
72 Py_DECREF(bytes);
73 return rv;
74}
#define PG_RE_THROW()
Definition: elog.h:412
#define PG_TRY(...)
Definition: elog.h:371
#define PG_END_TRY(...)
Definition: elog.h:396
#define ERROR
Definition: elog.h:39
#define PG_CATCH(...)
Definition: elog.h:381
#define PLy_elog
int GetDatabaseEncoding(void)
Definition: mbutils.c:1261
char * pg_any_to_server(const char *s, int len, int encoding)
Definition: mbutils.c:676
void pfree(void *pointer)
Definition: mcxt.c:1521
@ PG_UTF8
Definition: pg_wchar.h:232

References ERROR, GetDatabaseEncoding(), pfree(), pg_any_to_server(), PG_CATCH, PG_END_TRY, PG_RE_THROW, PG_TRY, PG_UTF8, and PLy_elog.

Referenced by PLyObject_AsString(), and PLyUnicode_AsString().

◆ PLyUnicode_FromString()

PyObject * PLyUnicode_FromString ( const char *  s)

Definition at line 117 of file plpy_util.c.

118{
119 return PLyUnicode_FromStringAndSize(s, strlen(s));
120}
PyObject * PLyUnicode_FromStringAndSize(const char *s, Py_ssize_t size)
Definition: plpy_util.c:96

References PLyUnicode_FromStringAndSize().

Referenced by PLy_generate_spi_exceptions(), PLy_quote_ident(), PLy_quote_literal(), PLy_quote_nullable(), PLy_result_colnames(), PLy_trigger_build_args(), PLyUnicode_FromScalar(), and set_string_attr().

◆ PLyUnicode_FromStringAndSize()

PyObject * PLyUnicode_FromStringAndSize ( const char *  s,
Py_ssize_t  size 
)

Definition at line 96 of file plpy_util.c.

97{
98 char *utf8string;
99 PyObject *o;
100
101 utf8string = pg_server_to_any(s, size, PG_UTF8);
102
103 if (utf8string == s)
104 {
105 o = PyUnicode_FromStringAndSize(s, size);
106 }
107 else
108 {
109 o = PyUnicode_FromString(utf8string);
110 pfree(utf8string);
111 }
112
113 return o;
114}
char * pg_server_to_any(const char *s, int len, int encoding)
Definition: mbutils.c:749
static pg_noinline void Size size
Definition: slab.c:607

References pfree(), pg_server_to_any(), PG_UTF8, and size.

Referenced by PLyUnicode_FromString().