1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
/*-------------------------------------------------------------------------
*
* name.c--
* Functions for the built-in type "name".
* name replaces char16 and is carefully implemented so that it
* is a string of length NAMEDATALEN. DO NOT use hard-coded constants anywhere
* always use NAMEDATALEN as the symbolic constant! - jolly 8/21/95
*
*
* Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/name.c,v 1.13 1998/06/15 19:29:35 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#include <string.h>
#include "postgres.h"
#include "utils/builtins.h" /* where the declarations go */
#include "utils/palloc.h" /* where the declarations go */
/*****************************************************************************
* USER I/O ROUTINES (none) *
*****************************************************************************/
/*
* namein - converts "..." to internal representation
*
* Note:
* [Old] Currently if strlen(s) < NAMEDATALEN, the extra chars are nulls
* Now, always NULL terminated
*/
NameData *
namein(char *s)
{
NameData *result;
int len;
if (s == NULL)
return (NULL);
result = (NameData *) palloc(NAMEDATALEN);
/* always keep it null-padded */
StrNCpy(result->data, s, NAMEDATALEN);
len = strlen(result->data);
while (len < NAMEDATALEN)
{
*(result->data + len) = '\0';
len++;
}
return (result);
}
/*
* nameout - converts internal reprsentation to "..."
*/
char *
nameout(NameData *s)
{
if (s == NULL)
return "-";
else
return pstrdup(s->data);
}
/*****************************************************************************
* PUBLIC ROUTINES *
*****************************************************************************/
/*
* nameeq - returns 1 iff arguments are equal
* namene - returns 1 iff arguments are not equal
*
* BUGS:
* Assumes that "xy\0\0a" should be equal to "xy\0b".
* If not, can do the comparison backwards for efficiency.
*
* namelt - returns 1 iff a < b
* namele - returns 1 iff a <= b
* namegt - returns 1 iff a < b
* namege - returns 1 iff a <= b
*
*/
bool
nameeq(NameData *arg1, NameData *arg2)
{
if (!arg1 || !arg2)
return 0;
else
return ((bool) strncmp(arg1->data, arg2->data, NAMEDATALEN) == 0);
}
bool
namene(NameData *arg1, NameData *arg2)
{
if (arg1 == NULL || arg2 == NULL)
return ((bool) 0);
return ((bool) (strncmp(arg1->data, arg2->data, NAMEDATALEN) != 0));
}
bool
namelt(NameData *arg1, NameData *arg2)
{
if (arg1 == NULL || arg2 == NULL)
return ((bool) 0);
return ((bool) (strncmp(arg1->data, arg2->data, NAMEDATALEN) < 0));
}
bool
namele(NameData *arg1, NameData *arg2)
{
if (arg1 == NULL || arg2 == NULL)
return ((bool) 0);
return ((bool) (strncmp(arg1->data, arg2->data, NAMEDATALEN) <= 0));
}
bool
namegt(NameData *arg1, NameData *arg2)
{
if (arg1 == NULL || arg2 == NULL)
return ((bool) 0);
return ((bool) (strncmp(arg1->data, arg2->data, NAMEDATALEN) > 0));
}
bool
namege(NameData *arg1, NameData *arg2)
{
if (arg1 == NULL || arg2 == NULL)
return ((bool) 0);
return ((bool) (strncmp(arg1->data, arg2->data, NAMEDATALEN) >= 0));
}
/* (see char.c for comparison/operation routines) */
int
namecpy(Name n1, Name n2)
{
if (!n1 || !n2)
return (-1);
strncpy(n1->data, n2->data, NAMEDATALEN);
return (0);
}
#ifdef NOT_USED
int
namecat(Name n1, Name n2)
{
return (namestrcat(n1, n2->data)); /* n2 can't be any longer than n1 */
}
#endif
int
namecmp(Name n1, Name n2)
{
return (strncmp(n1->data, n2->data, NAMEDATALEN));
}
int
namestrcpy(Name name, char *str)
{
if (!name || !str)
return (-1);
StrNCpy(name->data, str, NAMEDATALEN);
return (0);
}
#ifdef NOT_USED
int
namestrcat(Name name, char *str)
{
int i;
char *p,
*q;
if (!name || !str)
return (-1);
for (i = 0, p = name->data; i < NAMEDATALEN && *p; ++i, ++p)
;
for (q = str; i < NAMEDATALEN; ++i, ++p, ++q)
{
*p = *q;
if (!*q)
break;
}
return (0);
}
#endif
int
namestrcmp(Name name, char *str)
{
if (!name && !str)
return (0);
if (!name)
return (-1); /* NULL < anything */
if (!str)
return (1); /* NULL < anything */
return (strncmp(name->data, str, NAMEDATALEN));
}
/*****************************************************************************
* PRIVATE ROUTINES *
*****************************************************************************/
#ifdef NOT_USED
uint32
NameComputeLength(Name name)
{
char *charP;
int length;
for (length = 0, charP = name->data;
length < NAMEDATALEN && *charP != '\0';
length++, charP++)
;
return (uint32) length;
}
#endif
|
