FreeTDS API: include/freetds/convert.h Source File

FreeTDS API

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convert.h
1/* FreeTDS - Library of routines accessing Sybase and Microsoft databases
2 * Copyright (C) 1998-1999 Brian Bruns
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
18 */
19
20#ifndef _tdsconvert_h_
21#define _tdsconvert_h_
22
23#include <freetds/pushvis.h>
24
25#ifdef __cplusplus
26extern "C"
27{
28#if 0
29}
30#endif
31#endif
32
33 typedef union conv_result
34{
35 /* fixed */
36 TDS_TINYINT ti;
37 TDS_SMALLINT si;
38 TDS_USMALLINT usi;
39 TDS_INT i;
40 TDS_UINT ui;
41 TDS_INT8 bi;
42 TDS_UINT8 ubi;
43 TDS_FLOAT f;
44 TDS_REAL r;
45 TDS_MONEY m;
46 TDS_MONEY4 m4;
47 TDS_DATETIME dt;
48 TDS_DATETIME4 dt4;
49 TDS_DATETIMEALL dta;
50 TDS_TIME time;
51 TDS_DATE date;
52 TDS_BIGTIME bigtime;
53 TDS_BIGDATETIME bigdatetime;
54 TDS_NUMERIC n;
55 TDS_UNIQUE u;
56
57 /* variable */
58 TDS_CHAR *c;
59 TDS_CHAR *ib;
60
61 /* sized buffer types */
62 struct cc_t {
63 TDS_CHAR *c;
64 TDS_UINT len;
65 } cc;
66 struct cb_t {
67 TDS_CHAR *ib;
68 TDS_UINT len;
69 } cb;
70}
71 CONV_RESULT;
72
73/*
74 * Failure return codes for tds_convert()
75 */
76#define TDS_CONVERT_FAIL -1 /* unspecified failure */
77#define TDS_CONVERT_NOAVAIL -2 /* conversion does not exist */
78#define TDS_CONVERT_SYNTAX -3 /* syntax error in source field */
79#define TDS_CONVERT_NOMEM -4 /* insufficient memory */
80#define TDS_CONVERT_OVERFLOW -5 /* result too large */
81
82/* sized types */
83#define TDS_CONVERT_CHAR 256
84#define TDS_CONVERT_BINARY 257
85
86unsigned char tds_willconvert(int srctype, int desttype);
87
88TDS_SERVER_TYPE tds_get_null_type(TDS_SERVER_TYPE srctype);
89TDS_INT tds_char2hex(TDS_CHAR *dest, TDS_UINT destlen, const TDS_CHAR * src, TDS_UINT srclen);
90TDS_INT tds_convert(const TDSCONTEXT *context, int srctype, const void *src, TDS_UINT srclen, int desttype, CONV_RESULT *cr);
91
92size_t tds_strftime(char *buf, size_t maxsize, const char *format, const TDSDATEREC * timeptr, int prec);
93
94#ifdef __cplusplus
95#if 0
96{
97#endif
98}
99#endif
100
101#include <freetds/popvis.h>
102
103#endif /* _tdsconvert_h_ */
tds_get_null_type
TDS_SERVER_TYPE tds_get_null_type(TDS_SERVER_TYPE srctype)
Get same type but nullable.
Definition convert.c:2937
tds_willconvert
unsigned char tds_willconvert(int srctype, int desttype)
Test if a conversion is possible.
Definition convert.c:3119
tds_strftime
size_t tds_strftime(char *buf, size_t maxsize, const char *format, const TDSDATEREC *timeptr, int prec)
format a date string according to an "extended" strftime(3) formatting definition.
Definition convert.c:3003
tds_convert
TDS_INT tds_convert(const TDSCONTEXT *context, int srctype, const void *src, TDS_UINT srclen, int desttype, CONV_RESULT *cr)
tds_convert convert a type to another.
Definition convert.c:1901
conv_result
Definition convert.h:34
conv_result::cc_t
Definition convert.h:62
conv_result::cb_t
Definition convert.h:66
tdsnumeric
Definition proto.h:26
tdsmoney
Definition proto.h:39
tdsmoney4
Definition proto.h:45
tdsdatetime
Definition proto.h:50
tdsdatetime4
Definition proto.h:56
tdsunique
Definition proto.h:62
TDS_DATETIMEALL
this structure is not directed connected to a TDS protocol but keeps any DATE/TIME information.
Definition tds.h:145
tdsdaterec
Used by tds_datecrack.
Definition tds.h:158
tds_context
Definition tds.h:1033