1 /*------------------------------------------------------------------------- 2 * 3 * plpython.h - Python as a procedural language for PostgreSQL 4 * 5 * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group 6 * Portions Copyright (c) 1994, Regents of the University of California 7 * 8 * src/pl/plpython/plpython.h 9 * 10 *------------------------------------------------------------------------- 11 */ 12 #ifndef PLPYTHON_H 13 #define PLPYTHON_H 14 15 /* 16 * Include order should be: postgres.h, other postgres headers, plpython.h, 17 * other plpython headers. (In practice, other plpython headers will also 18 * include this file, so that they can compile standalone.) 19 */ 20 #ifndef POSTGRES_H 21 #error postgres.h must be included before plpython.h 22 #endif 23 24 /* 25 * Undefine some things that get (re)defined in the Python headers. They aren't 26 * used by the PL/Python code, and all PostgreSQL headers should be included 27 * earlier, so this should be pretty safe. 28 */ 29 #undef _POSIX_C_SOURCE 30 #undef _XOPEN_SOURCE 31 #undef HAVE_TZNAME 32 33 /* 34 * Sometimes python carefully scribbles on our *printf macros. 35 * So we undefine them here and redefine them after it's done its dirty deed. 36 */ 37 #undef vsnprintf 38 #undef snprintf 39 #undef vsprintf 40 #undef sprintf 41 #undef vfprintf 42 #undef fprintf 43 #undef vprintf 44 #undef printf 45 46 #if defined(_MSC_VER) && defined(_DEBUG) 47 /* Python uses #pragma to bring in a non-default libpython on VC++ if 48 * _DEBUG is defined */ 49 #undef _DEBUG 50 /* Also hide away errcode, since we load Python.h before postgres.h */ 51 #define errcode __msvc_errcode 52 #include <Python.h> 53 #undef errcode 54 #define _DEBUG 55 #elif defined (_MSC_VER) 56 #define errcode __msvc_errcode 57 #include <Python.h> 58 #undef errcode 59 #else 60 #include <Python.h> 61 #endif 62 63 /* 64 * Py_ssize_t compat for Python <= 2.4 65 */ 66 #if PY_VERSION_HEX < 0x02050000 && !defined(PY_SSIZE_T_MIN) 67 typedef int Py_ssize_t; 68 69 #define PY_SSIZE_T_MAX INT_MAX 70 #define PY_SSIZE_T_MIN INT_MIN 71 #endif 72 73 /* 74 * Python 2/3 strings/unicode/bytes handling. Python 2 has strings 75 * and unicode, Python 3 has strings, which are unicode on the C 76 * level, and bytes. The porting convention, which is similarly used 77 * in Python 2.6, is that "Unicode" is always unicode, and "Bytes" are 78 * bytes in Python 3 and strings in Python 2. Since we keep 79 * supporting Python 2 and its usual strings, we provide a 80 * compatibility layer for Python 3 that when asked to convert a C 81 * string to a Python string it converts the C string from the 82 * PostgreSQL server encoding to a Python Unicode object. 83 */ 84 85 #if PY_VERSION_HEX < 0x02060000 86 /* This is exactly the compatibility layer that Python 2.6 uses. */ 87 #define PyBytes_AsString PyString_AsString 88 #define PyBytes_FromStringAndSize PyString_FromStringAndSize 89 #define PyBytes_Size PyString_Size 90 #define PyObject_Bytes PyObject_Str 91 #endif 92 93 #if PY_MAJOR_VERSION >= 3 94 #define PyString_Check(x) 0 95 #define PyString_AsString(x) PLyUnicode_AsString(x) 96 #define PyString_FromString(x) PLyUnicode_FromString(x) 97 #define PyString_FromStringAndSize(x, size) PLyUnicode_FromStringAndSize(x, size) 98 #endif 99 100 /* 101 * Python 3 only has long. 102 */ 103 #if PY_MAJOR_VERSION >= 3 104 #define PyInt_FromLong(x) PyLong_FromLong(x) 105 #define PyInt_AsLong(x) PyLong_AsLong(x) 106 #endif 107 108 /* 109 * PyVarObject_HEAD_INIT was added in Python 2.6. Its use is 110 * necessary to handle both Python 2 and 3. This replacement 111 * definition is for Python <=2.5 112 */ 113 #ifndef PyVarObject_HEAD_INIT 114 #define PyVarObject_HEAD_INIT(type, size) \ 115 PyObject_HEAD_INIT(type) size, 116 #endif 117 118 /* Python 3 removed the Py_TPFLAGS_HAVE_ITER flag */ 119 #if PY_MAJOR_VERSION >= 3 120 #define Py_TPFLAGS_HAVE_ITER 0 121 #endif 122 123 /* define our text domain for translations */ 124 #undef TEXTDOMAIN 125 #define TEXTDOMAIN PG_TEXTDOMAIN("plpython") 126 127 #include <compile.h> 128 #include <eval.h> 129 130 /* put back our *printf macros ... this must match src/include/port.h */ 131 #ifdef vsnprintf 132 #undef vsnprintf 133 #endif 134 #ifdef snprintf 135 #undef snprintf 136 #endif 137 #ifdef vsprintf 138 #undef vsprintf 139 #endif 140 #ifdef sprintf 141 #undef sprintf 142 #endif 143 #ifdef vfprintf 144 #undef vfprintf 145 #endif 146 #ifdef fprintf 147 #undef fprintf 148 #endif 149 #ifdef vprintf 150 #undef vprintf 151 #endif 152 #ifdef printf 153 #undef printf 154 #endif 155 156 #define vsnprintf pg_vsnprintf 157 #define snprintf pg_snprintf 158 #define vsprintf pg_vsprintf 159 #define sprintf pg_sprintf 160 #define vfprintf pg_vfprintf 161 #define fprintf pg_fprintf 162 #define vprintf pg_vprintf 163 #define printf(...) pg_printf(__VA_ARGS__) 164 165 /* 166 * Used throughout, and also by the Python 2/3 porting layer, so it's easier to 167 * just include it everywhere. 168 */ 169 #include "plpy_util.h" 170 171 #endif /* PLPYTHON_H */ 172