FreeTDS API
string.h
1 /* FreeTDS - Library of routines accessing Sybase and Microsoft databases
2  * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004 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 _tdsguard_d2McTbRS3vmVcq0ls4BzwH_
21 #define _tdsguard_d2McTbRS3vmVcq0ls4BzwH_
22 
23 #include <freetds/macros.h>
24 #include <freetds/bool.h>
25 
26 #include <freetds/pushvis.h>
27 
37 typedef struct tds_dstr {
38  size_t dstr_size;
39  char dstr_s[1];
40 } *DSTR;
41 
43 extern const struct tds_dstr tds_str_empty;
44 
50 #define DSTR_INITIALIZER ((struct tds_dstr*) &tds_str_empty)
51 
53 static inline void
54 tds_dstr_init(DSTR * s)
55 {
56  *(s) = DSTR_INITIALIZER;
57 }
58 
60 static inline bool
61 tds_dstr_isempty(const DSTR * s)
62 {
63  return (*s)->dstr_size == 0;
64 }
65 
71 static inline char *
72 tds_dstr_buf(DSTR * s)
73 {
74  return (*s)->dstr_s;
75 }
76 
78 static inline const char *
79 tds_dstr_cstr(const DSTR * s)
80 {
81  return (*s)->dstr_s;
82 }
83 
85 static inline size_t
86 tds_dstr_len(const DSTR * s)
87 {
88  return (*s)->dstr_size;
89 }
90 
92 #define tds_dstr_empty(s) \
93  tds_dstr_free(s)
94 
95 void tds_dstr_zero(DSTR * s);
96 void tds_dstr_free(DSTR * s);
97 
98 DSTR* tds_dstr_dup(DSTR * s, const DSTR * src) TDS_WUR;
99 DSTR* tds_dstr_copy(DSTR * s, const char *src) TDS_WUR;
100 DSTR* tds_dstr_copyn(DSTR * s, const char *src, size_t length) TDS_WUR;
101 DSTR* tds_dstr_set(DSTR * s, char *src) TDS_WUR;
102 
103 DSTR* tds_dstr_setlen(DSTR *s, size_t length);
104 DSTR* tds_dstr_alloc(DSTR *s, size_t length) TDS_WUR;
105 
108 #include <freetds/popvis.h>
109 
110 #endif /* _tdsguard_d2McTbRS3vmVcq0ls4BzwH_ */
tds_dstr_zero
void tds_dstr_zero(DSTR *s)
clear all string filling with zeroes (mainly for security reason)
Definition: tdsstring.c:55
tds_dstr_free
void tds_dstr_free(DSTR *s)
free string
Definition: tdsstring.c:62
tds_dstr_cstr
static const char * tds_dstr_cstr(const DSTR *s)
Returns a C version (NUL terminated string) of dstr.
Definition: string.h:79
tds_dstr_copy
DSTR * tds_dstr_copy(DSTR *s, const char *src)
copy a string from another
Definition: tdsstring.c:122
tds_dstr
Structure to hold a string.
Definition: string.h:37
tds_dstr_isempty
static bool tds_dstr_isempty(const DSTR *s)
test if string is empty
Definition: string.h:61
tds_dstr_copyn
DSTR * tds_dstr_copyn(DSTR *s, const char *src, size_t length)
Set string to a given buffer of characters.
Definition: tdsstring.c:77
tds_dstr_setlen
DSTR * tds_dstr_setlen(DSTR *s, size_t length)
limit length of string, MUST be <= current length
Definition: tdsstring.c:145
tds_dstr_dup
DSTR * tds_dstr_dup(DSTR *s, const DSTR *src)
Duplicate a string from another dynamic string.
Definition: tdsstring.c:134
tds_dstr_buf
static char * tds_dstr_buf(DSTR *s)
Returns a buffer to edit the string.
Definition: string.h:72
DSTR
struct tds_dstr * DSTR
Structure to hold a string.
tds_dstr_alloc
DSTR * tds_dstr_alloc(DSTR *s, size_t length)
allocate space for length char
Definition: tdsstring.c:165
tds_dstr_init
static void tds_dstr_init(DSTR *s)
init a string with empty
Definition: string.h:54
tds_dstr_set
DSTR * tds_dstr_set(DSTR *s, char *src)
set a string from another buffer.
Definition: tdsstring.c:107
tds_dstr_len
static size_t tds_dstr_len(const DSTR *s)
Returns the length of the string in bytes.
Definition: string.h:86
DSTR_INITIALIZER
#define DSTR_INITIALIZER
Initializer, used to initialize string like in the following example.
Definition: string.h:50
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