65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
#include "postgres.h"
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#include "fmgr.h"
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#include "ltree/ltree.h"
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#include "plpython.h"
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PG_MODULE_MAGIC;
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extern void _PG_init(void);
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/* Linkage to functions in plpython module */
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#if PY_MAJOR_VERSION >= 3
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typedef PyObject *(*PLyUnicode_FromStringAndSize_t) (const char *s, Py_ssize_t size);
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static PLyUnicode_FromStringAndSize_t PLyUnicode_FromStringAndSize_p;
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#endif
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/*
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* Module initialize function: fetch function pointers for cross-module calls.
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*/
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void
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_PG_init(void)
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{
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/* Asserts verify that typedefs above match original declarations */
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#if PY_MAJOR_VERSION >= 3
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AssertVariableIsOfType(&PLyUnicode_FromStringAndSize, PLyUnicode_FromStringAndSize_t);
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PLyUnicode_FromStringAndSize_p = (PLyUnicode_FromStringAndSize_t)
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load_external_function("$libdir/" PLPYTHON_LIBNAME, "PLyUnicode_FromStringAndSize",
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true, NULL);
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#endif
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}
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/* These defines must be after the module init function */
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#define PLyUnicode_FromStringAndSize PLyUnicode_FromStringAndSize_p
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PG_FUNCTION_INFO_V1(ltree_to_plpython);
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Datum
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ltree_to_plpython(PG_FUNCTION_ARGS)
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{
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ltree *in = PG_GETARG_LTREE_P(0);
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int i;
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PyObject *list;
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ltree_level *curlevel;
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list = PyList_New(in->numlevel);
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if (!list)
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ereport(ERROR,
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(errcode(ERRCODE_OUT_OF_MEMORY),
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errmsg("out of memory")));
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curlevel = LTREE_FIRST(in);
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for (i = 0; i < in->numlevel; i++)
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{
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PyList_SetItem(list, i, PyString_FromStringAndSize(curlevel->name, curlevel->len));
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curlevel = LEVEL_NEXT(curlevel);
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}
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PG_FREE_IF_COPY(in, 0);
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return PointerGetDatum(list);
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}
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