struct chain *chainHeadLoadAll(char *fileName)
/* Load all chain from a tab-separated file.
* Dispose of this with chainFreeList(). */
{
struct chain *list = NULL, *el;
struct lineFile *lf = lineFileOpen(fileName, TRUE);
char *row[11];
while (lineFileRow(lf, row))
{
el = chainHeadLoad(row);
slAddHead(&list, el);
}
lineFileClose(&lf);
slReverse(&list);
return list;
}
struct chain *chainDbLoad(char *db, struct sqlConnection *conn, char *track,
char *chrom, int id)
/** Load chain. */
{
char table[HDB_MAX_TABLE_STRING];
char query[256];
struct sqlResult *sr;
char **row;
int rowOffset;
struct chain *chain = NULL;
if (!hFindSplitTable(db, chrom, track, table, sizeof table, &rowOffset))
errAbort("No %s track in database", track);
sqlSafef(query, sizeof(query),
"select * from %s where id = %d", table, id);
sr = sqlGetResult(conn, query);
row = sqlNextRow(sr);
if (row == NULL)
errAbort("Can't find %d in %s", id, table);
chain = chainHeadLoad(row + rowOffset);
sqlFreeResult(&sr);
chainDbAddBlocks(chain, track, conn);
return chain;
}