static void getVar(struct cartJson *cj, struct hash *paramHash)
/* Print out the requested cart var(s). varString may be a comma-separated list.
* If a var is a list variable, prints out a list of values for that var. */
{
char *varString = cartJsonRequiredParam(paramHash, "var", cj->jw, "get");
if (! varString)
return;
struct slName *varList = slNameListFromComma(varString), *var;
for (var = varList; var != NULL; var = var->next)
{
if (cartListVarExists(cj->cart, var->name))
{
// Use cartOptionalSlNameList and return a list:
struct slName *valList = cartOptionalSlNameList(cj->cart, var->name);
jsonWriteSlNameList(cj->jw, var->name, valList);
slFreeList(&valList);
}
else
{
// Regular single-value variable (or not in the cart):
char *val = cartOptionalString(cj->cart, var->name);
//#*** TODO: move jsonStringEscape inside jsonWriteString
char *encoded = jsonStringEscape(val);
jsonWriteString(cj->jw, var->name, encoded);
freeMem(encoded);
}
}
slFreeList(&varList);
}
static void changePositionHandler(struct cartJson *cj, struct hash *paramHash)
/* Update position in cart, after performing lookup if necessary.
* Usually we don't report what we just changed, but since we might modify it,
* print out the final value. */
{
char *newPosition = cartJsonRequiredParam(paramHash, "newValue", cj->jw, "changePosition");
if (newPosition)
changePosition(cj, newPosition);
}
static void setDb(struct cartJson *cj, struct hash *paramHash)
/* Set taxId and genome according to db and return the info we'll need to fill in
* the findPosition section. */
{
char *db = cartJsonRequiredParam(paramHash, "db", cj->jw, "setDb");
char *hubUrl = cartJsonOptionalParam(paramHash, "hubUrl");
int taxId = hTaxId(db);
writeFindPositionInfo(cj->jw, db, taxId, hubUrl, hDefaultPos(db));
cartSetString(cart, "db", db);
cartSetString(cart, "position", hDefaultPos(db));
}
static void getStaticHtml(struct cartJson *cj, struct hash *paramHash)
/* Read HTML text from a relative path under browser.documentRoot and
* write it as an encoded JSON string */
{
char *tag = cartJsonOptionalParam(paramHash, "tag");
if (isEmpty(tag))
tag = "html";
char *file = cartJsonRequiredParam(paramHash, "file", cj->jw, "getStaticHtml");
char *html = hFileContentsOrWarning(file);
//#*** TODO: move jsonStringEscape inside jsonWriteString
char *encoded = jsonStringEscape(html);
jsonWriteString(cj->jw, tag, encoded);
}
static void setHubDb(struct cartJson *cj, struct hash *paramHash)
/* Set db and genome according to hubUrl (and/or db and hub) and return the info we'll need
* to fill in the findPosition section. */
{
char *hubUrl = cartJsonRequiredParam(paramHash, "hubUrl", cj->jw, "setHubDb");
char *taxIdStr = cartJsonOptionalParam(paramHash, "taxId");
int taxId = taxIdStr ? atoi(taxIdStr) : -1;
// cart's db was already set by magic handling of hub CGI variables sent along
// with this command.
char *db = cartString(cart, "db");
if (isEmpty(db))
jsonWriteStringf(cj->jw, "error", "No db for hubUrl '%s'", hubUrl);
else
writeFindPositionInfo(cj->jw, db, taxId, hubUrl, hDefaultPos(db));
}
static void setTaxId(struct cartJson *cj, struct hash *paramHash)
/* Set db and genome according to taxId (and/or db) and return the info we'll need
* to fill in the findPosition section. */
{
char *taxIdStr = cartJsonRequiredParam(paramHash, "taxId", cj->jw, "setTaxId");
char *db = cartJsonOptionalParam(paramHash, "db");
int taxId = atoi(taxIdStr);
if (isEmpty(db))
db = hDbForTaxon(taxId);
if (isEmpty(db))
jsonWriteStringf(cj->jw, "error", "No db for taxId '%s'", taxIdStr);
else
{
writeFindPositionInfo(cj->jw, db, taxId, NULL, hDefaultPos(db));
cartSetString(cart, "db", db);
cartSetString(cart, "position", hDefaultPos(db));
}
}
