/**
* Change working URI
*
* @v uri New working URI, or NULL
*/
void churi ( struct uri *uri ) {
struct uri *new_uri;
new_uri = resolve_uri ( cwuri, uri );
uri_put ( cwuri );
cwuri = new_uri;
}
static int test_resolve ( const char *base_uri_string,
const char *relative_uri_string,
const char *resolved_uri_string ) {
struct uri *base_uri = NULL;
struct uri *relative_uri = NULL;
struct uri *resolved_uri = NULL;
char buf[URI_MAX_LEN];
size_t len;
int rc;
/* Parse URIs */
base_uri = parse_uri ( base_uri_string );
if ( ! base_uri ) {
rc = -ENOMEM;
goto done;
}
relative_uri = parse_uri ( relative_uri_string );
if ( ! relative_uri ) {
rc = -ENOMEM;
goto done;
}
/* Resolve URI */
resolved_uri = resolve_uri ( base_uri, relative_uri );
if ( ! resolved_uri ) {
rc = -ENOMEM;
goto done;
}
/* Compare result */
len = unparse_uri ( buf, sizeof ( buf ), resolved_uri, URI_ALL );
if ( strcmp ( buf, resolved_uri_string ) != 0 ) {
printf ( "Resolution of \"%s\"+\"%s\" produced \"%s\"\n",
base_uri_string, relative_uri_string, buf );
rc = -EINVAL;
goto done;
}
rc = 0;
done:
uri_put ( base_uri );
uri_put ( relative_uri );
uri_put ( resolved_uri );
if ( rc ) {
printf ( "URI resolution of \"%s\"+\"%s\" failed: %s\n",
base_uri_string, relative_uri_string,
strerror ( rc ) );
}
return rc;
}
void FeedParser::parse_depends(XmlReader& xml, Dependencies& depends)
{
while (xml.start_element())
{
std::string name = xml.name();
if (name == "if")
{
depends.start_if(xml.attribute("test", project_ns));
parse_depends(xml, depends);
depends.end_if();
}
else if (name == "elseif")
{
depends.start_elseif(xml.attribute("test", project_ns));
parse_depends(xml, depends);
depends.end_if();
}
else if (name == "else")
{
depends.start_else();
parse_depends(xml, depends);
depends.end_if();
}
else if (name == "depends")
{
std::string dep = resolve_uri(spec.id, xml.attribute("href", project_ns));
depends.depends(Spec(dep.c_str()));
}
else if (name == "conflicts")
{
std::string dep = resolve_uri(spec.id, xml.attribute("href", project_ns));
depends.conflicts(Spec(dep.c_str()));
}
xml.skip();
}
}
/**
* Open URI
*
* @v intf Data transfer interface
* @v uri URI
* @ret rc Return status code
*
* The URI will be regarded as being relative to the current working
* URI (see churi()).
*/
int xfer_open_uri ( struct interface *intf, struct uri *uri ) {
struct uri_opener *opener;
struct uri *resolved_uri;
int rc;
/* Resolve URI */
resolved_uri = resolve_uri ( cwuri, uri );
if ( ! resolved_uri ) {
rc = -ENOMEM;
goto err_resolve_uri;
}
/* Find opener which supports this URI scheme */
opener = xfer_uri_opener ( resolved_uri->scheme );
if ( ! opener ) {
DBGC ( INTF_COL ( intf ), "INTF " INTF_FMT " attempted to open "
"unsupported URI scheme \"%s\"\n",
INTF_DBG ( intf ), resolved_uri->scheme );
rc = -ENOTSUP;
goto err_opener;
}
/* Call opener */
DBGC ( INTF_COL ( intf ), "INTF " INTF_FMT " opening %s URI\n",
INTF_DBG ( intf ), resolved_uri->scheme );
if ( ( rc = opener->open ( intf, resolved_uri ) ) != 0 ) {
DBGC ( INTF_COL ( intf ), "INTF " INTF_FMT " could not open: "
"%s\n", INTF_DBG ( intf ), strerror ( rc ) );
goto err_open;
}
err_open:
err_opener:
uri_put ( resolved_uri );
err_resolve_uri:
return rc;
}
