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New SQL function for testing/debugging use only: parseuri().

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FossilOrigin-Name: 37d3b6b17e92b2c760239c3053bbc7fb85091acd688c54a73af7611fe9501312
This commit is contained in:
drh
2024-10-06 15:01:31 +00:00
parent 2c72c55dca
commit 74672acd94
3 changed files with 95 additions and 9 deletions
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85
src/func.c
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@ -2535,7 +2535,13 @@ static void signFunc(
** Implementation of fpdecode(x,y,z) function.
**
** x is a real number that is to be decoded. y is the precision.
** z is the maximum real precision.
** z is the maximum real precision. Return a string that shows the
** results of the sqlite3FpDecode() function.
**
** Used for testing and debugging only, specifically testing and debugging
** of the sqlite3FpDecode() function. This SQL function does not appear
** in production builds. This function is not an API and is subject to
** modification or removal in future versions of SQLite.
*/
static void fpdecodeFunc(
sqlite3_context *context,
@ -2562,6 +2568,82 @@ static void fpdecodeFunc(
}
#endif /* SQLITE_DEBUG */
#ifdef SQLITE_DEBUG
/*
** Implementation of parseuri(uri,flags) function.
**
** Required Arguments:
** "uri" The URI to parse.
** "flags" Bitmask of flags, as if to sqlite3_open_v2().
**
** Additional arguments beyond the first two make calls to
** sqlite3_uri_key() for integers and sqlite3_uri_parameter for
** anything else.
**
** The result is a string showing the results of calling sqlite3ParseUri().
**
** Used for testing and debugging only, specifically testing and debugging
** of the sqlite3ParseUri() function. This SQL function does not appear
** in production builds. This function is not an API and is subject to
** modification or removal in future versions of SQLite.
*/
static void parseuriFunc(
sqlite3_context *ctx,
int argc,
sqlite3_value **argv
){
sqlite3_str *pResult;
const char *zVfs;
const char *zUri;
unsigned int flgs;
int rc;
sqlite3_vfs *pVfs = 0;
char *zFile = 0;
char *zErr = 0;
if( argc<2 ) return;
pVfs = sqlite3_vfs_find(0);
assert( pVfs );
zVfs = pVfs->zName;
zUri = (const char*)sqlite3_value_text(argv[0]);
if( zUri==0 ) return;
flgs = (unsigned int)sqlite3_value_int(argv[1]);
rc = sqlite3ParseUri(zVfs, zUri, &flgs, &pVfs, &zFile, &zErr);
pResult = sqlite3_str_new(0);
if( pResult ){
int i;
sqlite3_str_appendf(pResult, "rc=%d", rc);
sqlite3_str_appendf(pResult, ", flags=0x%x", flgs);
sqlite3_str_appendf(pResult, ", vfs=%Q", pVfs ? pVfs->zName: 0);
sqlite3_str_appendf(pResult, ", err=%Q", zErr);
sqlite3_str_appendf(pResult, ", file=%Q", zFile);
if( zFile ){
const char *z = zFile;
z += sqlite3Strlen30(z)+1;
while( z[0] ){
sqlite3_str_appendf(pResult, ", %Q", z);
z += sqlite3Strlen30(z)+1;
}
for(i=2; i<argc; i++){
const char *zArg;
if( sqlite3_value_type(argv[i])==SQLITE_INTEGER ){
int k = sqlite3_value_int(argv[i]);
sqlite3_str_appendf(pResult, ", '%d:%q'",k,sqlite3_uri_key(zFile, k));
}else if( (zArg = (const char*)sqlite3_value_text(argv[i]))!=0 ){
sqlite3_str_appendf(pResult, ", '%q:%q'",
zArg, sqlite3_uri_parameter(zFile,zArg));
}else{
sqlite3_str_appendf(pResult, ", NULL");
}
}
}
sqlite3_result_text(ctx, sqlite3_str_finish(pResult), -1, sqlite3_free);
}
sqlite3_free_filename(zFile);
sqlite3_free(zErr);
}
#endif /* SQLITE_DEBUG */
/*
** All of the FuncDef structures in the aBuiltinFunc[] array above
** to the global function hash table. This occurs at start-time (as
@ -2635,6 +2717,7 @@ void sqlite3RegisterBuiltinFunctions(void){
FUNCTION(abs, 1, 0, 0, absFunc ),
#ifdef SQLITE_DEBUG
FUNCTION(fpdecode, 3, 0, 0, fpdecodeFunc ),
FUNCTION(parseuri, -1, 0, 0, parseuriFunc ),
#endif
#ifndef SQLITE_OMIT_FLOATING_POINT
FUNCTION(round, 1, 0, 0, roundFunc ),