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util/UriExtract: uri_get_scheme() returns StringView

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Reduce overhead by not duplicating the string.
This commit is contained in:
Max Kellermann 2019-08-09 16:09:40 +02:00
parent 40a2880857
commit 9c6850210d
3 changed files with 6 additions and 6 deletions
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2
src/playlist/PlaylistRegistry.cxx
View File

@ -123,7 +123,7 @@ playlist_list_open_uri_scheme(const char *uri, Mutex &mutex,
if (playlist_plugins_enabled[i] && plugin->open_uri != nullptr &&
plugin->schemes != nullptr &&
StringArrayContainsCase(plugin->schemes, scheme.c_str())) {
StringArrayContainsCase(plugin->schemes, scheme)) {
auto playlist = plugin->open_uri(uri, mutex);
if (playlist)
return playlist;

6
src/util/UriExtract.cxx
View File

@ -85,14 +85,14 @@ uri_has_scheme(const char *uri) noexcept
return strstr(uri, "://") != nullptr;
}
std::string
StringView
uri_get_scheme(const char *uri) noexcept
{
const char *end = strstr(uri, "://");
if (end == nullptr)
end = uri;
return nullptr;
return std::string(uri, end);
return {uri, end};
}
const char *

4
src/util/UriExtract.hxx
View File

@ -32,7 +32,7 @@
#include "Compiler.h"
#include <string>
struct StringView;
/**
* Checks whether the specified URI has a scheme in the form
@ -46,7 +46,7 @@ uri_has_scheme(const char *uri) noexcept;
* Returns the scheme name of the specified URI, or an empty string.
*/
gcc_pure
std::string
StringView
uri_get_scheme(const char *uri) noexcept;
/**