typename.c

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/* src/interfaces/ecpg/ecpglib/typename.c */
 
#define POSTGRES_ECPG_INTERNAL
#include "postgres_fe.h"
 
#include "catalog/pg_type_d.h"
#include "ecpglib.h"
#include "ecpglib_extern.h"
#include "ecpgtype.h"
#include "sql3types.h"
#include "sqltypes.h"
 
/*
 * This function is used to generate the correct type names.
 */
const char *
ecpg_type_name(enum ECPGttype typ)
{
    switch (typ)
    {
        case ECPGt_char:
        case ECPGt_string:
            return "char";
        case ECPGt_unsigned_char:
            return "unsigned char";
        case ECPGt_short:
            return "short";
        case ECPGt_unsigned_short:
            return "unsigned short";
        case ECPGt_int:
            return "int";
        case ECPGt_unsigned_int:
            return "unsigned int";
        case ECPGt_long:
            return "long";
        case ECPGt_unsigned_long:
            return "unsigned long";
        case ECPGt_long_long:
            return "long long";
        case ECPGt_unsigned_long_long:
            return "unsigned long long";
        case ECPGt_float:
            return "float";
        case ECPGt_double:
            return "double";
        case ECPGt_bool:
            return "bool";
        case ECPGt_varchar:
            return "varchar";
        case ECPGt_bytea:
            return "bytea";
        case ECPGt_char_variable:
            return "char";
        case ECPGt_decimal:
            return "decimal";
        case ECPGt_numeric:
            return "numeric";
        case ECPGt_date:
            return "date";
        case ECPGt_timestamp:
            return "timestamp";
        case ECPGt_interval:
            return "interval";
        case ECPGt_const:
            return "Const";
        default:
            abort();
    }
    return "";                  /* keep MSC compiler happy */
}
 
int
ecpg_dynamic_type(Oid type)
{
    switch (type)
    {
        case BOOLOID:
            return SQL3_BOOLEAN;    /* bool */
        case INT2OID:
            return SQL3_SMALLINT;   /* int2 */
        case INT4OID:
            return SQL3_INTEGER;    /* int4 */
        case TEXTOID:
            return SQL3_CHARACTER;  /* text */
        case FLOAT4OID:
            return SQL3_REAL;   /* float4 */
        case FLOAT8OID:
            return SQL3_DOUBLE_PRECISION;   /* float8 */
        case BPCHAROID:
            return SQL3_CHARACTER;  /* bpchar */
        case VARCHAROID:
            return SQL3_CHARACTER_VARYING;  /* varchar */
        case DATEOID:
            return SQL3_DATE_TIME_TIMESTAMP;    /* date */
        case TIMEOID:
            return SQL3_DATE_TIME_TIMESTAMP;    /* time */
        case TIMESTAMPOID:
            return SQL3_DATE_TIME_TIMESTAMP;    /* datetime */
        case NUMERICOID:
            return SQL3_NUMERIC;    /* numeric */
        default:
            return 0;
    }
}
 
int
sqlda_dynamic_type(Oid type, enum COMPAT_MODE compat)
{
    switch (type)
    {
        case CHAROID:
        case VARCHAROID:
        case BPCHAROID:
        case TEXTOID:
            return ECPGt_char;
        case INT2OID:
            return ECPGt_short;
        case INT4OID:
            return ECPGt_int;
        case FLOAT8OID:
            return ECPGt_double;
        case FLOAT4OID:
            return ECPGt_float;
        case NUMERICOID:
            return INFORMIX_MODE(compat) ? ECPGt_decimal : ECPGt_numeric;
        case DATEOID:
            return ECPGt_date;
        case TIMESTAMPOID:
        case TIMESTAMPTZOID:
            return ECPGt_timestamp;
        case INTERVALOID:
            return ECPGt_interval;
        case INT8OID:
#if SIZEOF_LONG == 8
            return ECPGt_long;
#elif SIZEOF_LONG_LONG == 8
            return ECPGt_long_long;
#else
#error "cannot find integer type of the same size as INT8OID"
#endif
            /* Unhandled types always return a string */
        default:
            return ECPGt_char;
    }
}