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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);
blob_reset(&cx);
}
}
/*
** Implementation of the "compress(X)" SQL function. The input X is
** compressed using zLib and the output is returned.
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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),
SQLITE4_TRANSIENT);
blob_reset(&cx);
}
}
/*
** Implementation of the "compress(X)" SQL function. The input X is
** compressed using zLib and the output is returned.
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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);
}
/*
** 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.
*/
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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, 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.
*/
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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);
}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,
sqlcmd_content, 0, 0);
sqlite4_create_function(db, "compress", 1, SQLITE_ANY, 0,
sqlcmd_compress, 0, 0);
sqlite4_create_function(db, "decompress", 1, SQLITE_ANY, 0,
sqlcmd_decompress, 0, 0);
return SQLITE_OK;
}
/*
** COMMAND: sqlite4
**
** Usage: %fossil sqlite4 ?DATABASE? ?OPTIONS?
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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, 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, SQLITE4_ANY, 0,
sqlcmd_content, 0, 0);
sqlite4_create_function(db, "compress", 1, SQLITE4_ANY, 0,
sqlcmd_compress, 0, 0);
sqlite4_create_function(db, "decompress", 1, SQLITE4_ANY, 0,
sqlcmd_decompress, 0, 0);
return SQLITE4_OK;
}
/*
** COMMAND: sqlite4
**
** Usage: %fossil sqlite4 ?DATABASE? ?OPTIONS?
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