41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
-
+
|
if( zName==0 ) return;
g.db = sqlite4_context_db_handle(context);
g.repositoryOpen = 1;
rid = name_to_rid(zName);
if( rid==0 ) return;
if( content_get(rid, &cx) ){
sqlite4_result_blob(context, blob_buffer(&cx), blob_size(&cx),
SQLITE_TRANSIENT);
SQLITE4_TRANSIENT);
blob_reset(&cx);
}
}
/*
** Implementation of the "compress(X)" SQL function. The input X is
** compressed using zLib and the output is returned.
|
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
-
+
|
nOut = 13 + nIn + (nIn+999)/1000;
pOut = sqlite4_malloc(0, nOut+4);
pOut[0] = nIn>>24 & 0xff;
pOut[1] = nIn>>16 & 0xff;
pOut[2] = nIn>>8 & 0xff;
pOut[3] = nIn & 0xff;
compress(&pOut[4], &nOut, pIn, nIn);
sqlite4_result_blob(context, pOut, nOut+4, SQLITE_DYNAMIC);
sqlite4_result_blob(context, pOut, nOut+4, SQLITE4_DYNAMIC);
}
/*
** Implementation of the "decompress(X)" SQL function. The argument X
** is a blob which was obtained from compress(Y). The output will be
** the value Y.
*/
|
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
|
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
|
-
+
-
+
-
+
-
+
-
+
|
pIn = sqlite4_value_blob(argv[0]);
nIn = sqlite4_value_bytes(argv[0]);
nOut = (pIn[0]<<24) + (pIn[1]<<16) + (pIn[2]<<8) + pIn[3];
pOut = sqlite4_malloc(0, nOut+1);
rc = uncompress(pOut, &nOut, &pIn[4], nIn-4);
if( rc==Z_OK ){
sqlite4_result_blob(context, pOut, nOut, SQLITE_DYNAMIC);
sqlite4_result_blob(context, pOut, nOut, SQLITE4_DYNAMIC);
}else{
sqlite4_result_error(context, "input is not zlib compressed", -1);
}
}
/*
** This is the "automatic extensionn" initializer that runs right after
** the connection to the repository database is opened. Set up the
** database connection to be more useful to the human operator.
*/
static int sqlcmd_autoinit(
sqlite4 *db,
const char **pzErrMsg,
const void *notUsed
){
sqlite4_create_function(db, "content", 1, SQLITE_ANY, 0,
sqlite4_create_function(db, "content", 1, SQLITE4_ANY, 0,
sqlcmd_content, 0, 0);
sqlite4_create_function(db, "compress", 1, SQLITE_ANY, 0,
sqlite4_create_function(db, "compress", 1, SQLITE4_ANY, 0,
sqlcmd_compress, 0, 0);
sqlite4_create_function(db, "decompress", 1, SQLITE_ANY, 0,
sqlite4_create_function(db, "decompress", 1, SQLITE4_ANY, 0,
sqlcmd_decompress, 0, 0);
return SQLITE_OK;
return SQLITE4_OK;
}
/*
** COMMAND: sqlite4
**
** Usage: %fossil sqlite4 ?DATABASE? ?OPTIONS?
|