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
|
/*
* Routines for handling of SET var TO statements
*
* $Id: variable.c,v 1.3 1997/04/17 13:50:30 scrappy Exp $
*
* $Log: variable.c,v $
* Revision 1.3 1997/04/17 13:50:30 scrappy
* From: "Martin J. Laubach" <mjl@CSlab.tuwien.ac.at>
* Subject: [HACKERS] Patch: set date to euro/us postgres/iso/sql
*
* Here a patch that implements a SET date for use by the datetime
* stuff. The syntax is
*
* SET date TO 'val[,val,...]'
*
* where val is us (us dates), euro (european dates), postgres,
* iso or sql.
*
* Thomas is working on the integration in his datetime module.
* I just needed to get the patch out before it went stale :)
*
* Revision 1.1 1997/04/10 16:52:07 mjl
* Initial revision
*/
/*-----------------------------------------------------------------------*/
#include <string.h>
#include "postgres.h"
#include "tcop/variable.h"
/*-----------------------------------------------------------------------*/
#if USE_EURODATES
#define DATE_EURO TRUE
#else
#define DATE_EURO FALSE
#endif
/*-----------------------------------------------------------------------*/
struct PGVariables PGVariables =
{
{ DATE_EURO, Date_Postgres }
};
/*-----------------------------------------------------------------------*/
static const char *get_token(char *buf, int size, const char *str)
{
if(!*str)
return NULL;
/* skip white space */
while(*str && (*str == ' ' || *str == '\t'))
str++;
/* copy until we hit white space or comma or end of string */
while(*str && *str != ' ' && *str != '\t' && *str != ',' && size-- > 1)
*buf++ = *str++;
*buf = '\0';
/* skip white space and comma*/
while(*str && (*str == ' ' || *str == '\t' || *str == ','))
str++;
return str;
}
/*-----------------------------------------------------------------------*/
static bool parse_null(const char *value)
{
return TRUE;
}
static bool parse_date(const char *value)
{
char tok[32];
int dcnt = 0, ecnt = 0;
while(value = get_token(tok, sizeof(tok), value))
{
/* Ugh. Somebody ought to write a table driven version -- mjl */
if(!strcasecmp(tok, "iso"))
{
PGVariables.date.format = Date_ISO;
dcnt++;
}
else if(!strcasecmp(tok, "sql"))
{
PGVariables.date.format = Date_SQL;
dcnt++;
}
else if(!strcasecmp(tok, "postgres"))
{
PGVariables.date.format = Date_Postgres;
dcnt++;
}
else if(!strcasecmp(tok, "euro"))
{
PGVariables.date.euro = TRUE;
ecnt++;
}
else if(!strcasecmp(tok, "us"))
{
PGVariables.date.euro = FALSE;
ecnt++;
}
else
{
elog(WARN, "Bad value for date (%s)", tok);
}
}
if(dcnt > 1 || ecnt > 1)
elog(NOTICE, "Conflicting settings for date");
return TRUE;
}
/*-----------------------------------------------------------------------*/
struct VariableParsers
{
const char *name;
bool (*parser)(const char *);
} VariableParsers[] =
{
{ "date", parse_date },
{ "timezone", parse_null },
{ NULL }
};
/*-----------------------------------------------------------------------*/
bool SetPGVariable(const char *name, const char *value)
{
struct VariableParsers *vp;
for(vp = VariableParsers; vp->name; vp++)
{
if(!strcasecmp(vp->name, name))
return (vp->parser)(value);
}
elog(NOTICE, "No such variable %s", name);
return TRUE;
}
/*-----------------------------------------------------------------------*/
const char *GetPGVariable(const char *varName)
{
return NULL;
}
/*-----------------------------------------------------------------------*/
|
