[14b8da]: sql.c Maximize Restore History

Download this file

sql.c    201 lines (171 with data), 4.3 kB

  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
/* MiniDLNA media server
* Copyright (C) 2008-2009 Justin Maggard
*
* This file is part of MiniDLNA.
*
* MiniDLNA is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* MiniDLNA is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MiniDLNA. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "sql.h"
#include "log.h"
int
sql_exec(sqlite3 *db, const char *fmt, ...)
{
int ret;
char *errMsg = NULL;
char *sql;
va_list ap;
//DPRINTF(E_DEBUG, L_DB_SQL, "SQL: %s\n", sql);
va_start(ap, fmt);
sql = sqlite3_vmprintf(fmt, ap);
ret = sqlite3_exec(db, sql, 0, 0, &errMsg);
if( ret != SQLITE_OK )
{
DPRINTF(E_ERROR, L_DB_SQL, "SQL ERROR %d [%s]\n%s\n", ret, errMsg, sql);
if (errMsg)
sqlite3_free(errMsg);
}
sqlite3_free(sql);
return ret;
}
int
sql_get_table(sqlite3 *db, const char *sql, char ***pazResult, int *pnRow, int *pnColumn)
{
int ret;
char *errMsg = NULL;
//DPRINTF(E_DEBUG, L_DB_SQL, "SQL: %s\n", sql);
ret = sqlite3_get_table(db, sql, pazResult, pnRow, pnColumn, &errMsg);
if( ret != SQLITE_OK )
{
DPRINTF(E_ERROR, L_DB_SQL, "SQL ERROR %d [%s]\n%s\n", ret, errMsg, sql);
if (errMsg)
sqlite3_free(errMsg);
}
return ret;
}
int
sql_get_int_field(sqlite3 *db, const char *fmt, ...)
{
va_list ap;
int counter, result;
char *sql;
int ret;
sqlite3_stmt *stmt;
va_start(ap, fmt);
sql = sqlite3_vmprintf(fmt, ap);
//DPRINTF(E_DEBUG, L_DB_SQL, "sql: %s\n", sql);
switch (sqlite3_prepare_v2(db, sql, -1, &stmt, NULL))
{
case SQLITE_OK:
break;
default:
DPRINTF(E_ERROR, L_DB_SQL, "prepare failed: %s\n%s\n", sqlite3_errmsg(db), sql);
sqlite3_free(sql);
return -1;
}
sqlite3_free(sql);
for (counter = 0;
((result = sqlite3_step(stmt)) == SQLITE_BUSY || result == SQLITE_LOCKED) && counter < 2;
counter++) {
/* While SQLITE_BUSY has a built in timeout,
SQLITE_LOCKED does not, so sleep */
if (result == SQLITE_LOCKED)
sleep(1);
}
switch (result)
{
case SQLITE_DONE:
/* no rows returned */
ret = 0;
break;
case SQLITE_ROW:
if (sqlite3_column_type(stmt, 0) == SQLITE_NULL)
{
ret = 0;
break;
}
ret = sqlite3_column_int(stmt, 0);
break;
default:
DPRINTF(E_WARN, L_DB_SQL, "%s: step failed: %s\n", __func__, sqlite3_errmsg(db));
ret = -1;
break;
}
sqlite3_finalize(stmt);
return ret;
}
char *
sql_get_text_field(void *db, const char *fmt, ...)
{
va_list ap;
int counter, result, len;
char *sql;
char *str;
sqlite3_stmt *stmt;
va_start(ap, fmt);
if (db == NULL)
{
DPRINTF(E_WARN, L_DB_SQL, "db is NULL\n");
return NULL;
}
sql = sqlite3_vmprintf(fmt, ap);
//DPRINTF(E_DEBUG, L_DB_SQL, "sql: %s\n", sql);
switch (sqlite3_prepare_v2(db, sql, -1, &stmt, NULL))
{
case SQLITE_OK:
break;
default:
DPRINTF(E_ERROR, L_DB_SQL, "prepare failed: %s\n%s\n", sqlite3_errmsg(db), sql);
sqlite3_free(sql);
return NULL;
}
sqlite3_free(sql);
for (counter = 0;
((result = sqlite3_step(stmt)) == SQLITE_BUSY || result == SQLITE_LOCKED) && counter < 2;
counter++)
{
/* While SQLITE_BUSY has a built in timeout,
* SQLITE_LOCKED does not, so sleep */
if (result == SQLITE_LOCKED)
sleep(1);
}
switch (result)
{
case SQLITE_DONE:
/* no rows returned */
str = NULL;
break;
case SQLITE_ROW:
if (sqlite3_column_type(stmt, 0) == SQLITE_NULL)
{
str = NULL;
break;
}
len = sqlite3_column_bytes(stmt, 0);
if ((str = sqlite3_malloc(len + 1)) == NULL)
{
DPRINTF(E_ERROR, L_DB_SQL, "malloc failed\n");
break;
}
strncpy(str, (char *)sqlite3_column_text(stmt, 0), len + 1);
break;
default:
DPRINTF(E_WARN, L_DB_SQL, "SQL step failed: %s\n", sqlite3_errmsg(db));
str = NULL;
break;
}
sqlite3_finalize(stmt);
return str;
}