diff options
Diffstat (limited to 'src/playlist/XspfPlaylistPlugin.cxx')
-rw-r--r-- | src/playlist/XspfPlaylistPlugin.cxx | 147 |
1 files changed, 40 insertions, 107 deletions
diff --git a/src/playlist/XspfPlaylistPlugin.cxx b/src/playlist/XspfPlaylistPlugin.cxx index dcfab5a80..2157dd678 100644 --- a/src/playlist/XspfPlaylistPlugin.cxx +++ b/src/playlist/XspfPlaylistPlugin.cxx @@ -21,15 +21,14 @@ #include "XspfPlaylistPlugin.hxx" #include "PlaylistPlugin.hxx" #include "MemorySongEnumerator.hxx" +#include "DetachedSong.hxx" #include "InputStream.hxx" -#include "tag/Tag.hxx" +#include "tag/TagBuilder.hxx" #include "util/Error.hxx" #include "util/Domain.hxx" +#include "Expat.hxx" #include "Log.hxx" -#include <glib.h> - -#include <assert.h> #include <string.h> static constexpr Domain xspf_domain("xspf"); @@ -42,7 +41,7 @@ struct XspfParser { * The list of songs (in reverse order because that's faster * while adding). */ - std::forward_list<SongPointer> songs; + std::forward_list<DetachedSong> songs; /** * The current position in the XML file. @@ -57,24 +56,22 @@ struct XspfParser { * valid if state==TRACK. TAG_NUM_OF_ITEM_TYPES means there * is no (known) tag. */ - TagType tag; + TagType tag_type; /** - * The current song. It is allocated after the "location" - * element. + * The current song URI. It is set by the "location" element. */ - Song *song; + std::string location; + + TagBuilder tag_builder; XspfParser() :state(ROOT) {} }; -static void -xspf_start_element(gcc_unused GMarkupParseContext *context, - const gchar *element_name, - gcc_unused const gchar **attribute_names, - gcc_unused const gchar **attribute_values, - gpointer user_data, gcc_unused GError **error) +static void XMLCALL +xspf_start_element(void *user_data, const XML_Char *element_name, + gcc_unused const XML_Char **atts) { XspfParser *parser = (XspfParser *)user_data; @@ -94,8 +91,8 @@ xspf_start_element(gcc_unused GMarkupParseContext *context, case XspfParser::TRACKLIST: if (strcmp(element_name, "track") == 0) { parser->state = XspfParser::TRACK; - parser->song = nullptr; - parser->tag = TAG_NUM_OF_ITEM_TYPES; + parser->location.clear(); + parser->tag_type = TAG_NUM_OF_ITEM_TYPES; } break; @@ -104,17 +101,17 @@ xspf_start_element(gcc_unused GMarkupParseContext *context, if (strcmp(element_name, "location") == 0) parser->state = XspfParser::LOCATION; else if (strcmp(element_name, "title") == 0) - parser->tag = TAG_TITLE; + parser->tag_type = TAG_TITLE; else if (strcmp(element_name, "creator") == 0) /* TAG_COMPOSER would be more correct according to the XSPF spec */ - parser->tag = TAG_ARTIST; + parser->tag_type = TAG_ARTIST; else if (strcmp(element_name, "annotation") == 0) - parser->tag = TAG_COMMENT; + parser->tag_type = TAG_COMMENT; else if (strcmp(element_name, "album") == 0) - parser->tag = TAG_ALBUM; + parser->tag_type = TAG_ALBUM; else if (strcmp(element_name, "trackNum") == 0) - parser->tag = TAG_TRACK; + parser->tag_type = TAG_TRACK; break; @@ -123,10 +120,8 @@ xspf_start_element(gcc_unused GMarkupParseContext *context, } } -static void -xspf_end_element(gcc_unused GMarkupParseContext *context, - const gchar *element_name, - gpointer user_data, gcc_unused GError **error) +static void XMLCALL +xspf_end_element(void *user_data, const XML_Char *element_name) { XspfParser *parser = (XspfParser *)user_data; @@ -148,12 +143,13 @@ xspf_end_element(gcc_unused GMarkupParseContext *context, case XspfParser::TRACK: if (strcmp(element_name, "track") == 0) { - if (parser->song != nullptr) - parser->songs.emplace_front(parser->song); + if (!parser->location.empty()) + parser->songs.emplace_front(std::move(parser->location), + parser->tag_builder.Commit()); parser->state = XspfParser::TRACKLIST; } else - parser->tag = TAG_NUM_OF_ITEM_TYPES; + parser->tag_type = TAG_NUM_OF_ITEM_TYPES; break; @@ -163,10 +159,8 @@ xspf_end_element(gcc_unused GMarkupParseContext *context, } } -static void -xspf_text(gcc_unused GMarkupParseContext *context, - const gchar *text, gsize text_len, - gpointer user_data, gcc_unused GError **error) +static void XMLCALL +xspf_char_data(void *user_data, const XML_Char *s, int len) { XspfParser *parser = (XspfParser *)user_data; @@ -177,43 +171,19 @@ xspf_text(gcc_unused GMarkupParseContext *context, break; case XspfParser::TRACK: - if (parser->song != nullptr && - parser->tag != TAG_NUM_OF_ITEM_TYPES) { - if (parser->song->tag == nullptr) - parser->song->tag = new Tag(); - parser->song->tag->AddItem(parser->tag, text, text_len); - } + if (!parser->location.empty() && + parser->tag_type != TAG_NUM_OF_ITEM_TYPES) + parser->tag_builder.AddItem(parser->tag_type, s, len); break; case XspfParser::LOCATION: - if (parser->song == nullptr) { - char *uri = g_strndup(text, text_len); - parser->song = Song::NewRemote(uri); - g_free(uri); - } + parser->location.assign(s, len); break; } } -static const GMarkupParser xspf_parser = { - xspf_start_element, - xspf_end_element, - xspf_text, - nullptr, - nullptr, -}; - -static void -xspf_parser_destroy(gpointer data) -{ - XspfParser *parser = (XspfParser *)data; - - if (parser->state >= XspfParser::TRACK && parser->song != nullptr) - parser->song->Free(); -} - /* * The playlist object * @@ -223,58 +193,21 @@ static SongEnumerator * xspf_open_stream(InputStream &is) { XspfParser parser; - GMarkupParseContext *context; - char buffer[1024]; - size_t nbytes; - bool success; - Error error2; - GError *error = nullptr; - - /* parse the XSPF XML file */ - - context = g_markup_parse_context_new(&xspf_parser, - G_MARKUP_TREAT_CDATA_AS_TEXT, - &parser, xspf_parser_destroy); - - while (true) { - nbytes = is.LockRead(buffer, sizeof(buffer), error2); - if (nbytes == 0) { - if (error2.IsDefined()) { - g_markup_parse_context_free(context); - LogError(error2); - return nullptr; - } - - break; - } - success = g_markup_parse_context_parse(context, buffer, nbytes, - &error); - if (!success) { - FormatError(xspf_domain, - "XML parser failed: %s", error->message); - g_error_free(error); - g_markup_parse_context_free(context); + { + ExpatParser expat(&parser); + expat.SetElementHandler(xspf_start_element, xspf_end_element); + expat.SetCharacterDataHandler(xspf_char_data); + + Error error; + if (!expat.Parse(is, error)) { + LogError(error); return nullptr; } } - success = g_markup_parse_context_end_parse(context, &error); - if (!success) { - FormatError(xspf_domain, - "XML parser failed: %s", error->message); - g_error_free(error); - g_markup_parse_context_free(context); - return nullptr; - } - parser.songs.reverse(); - MemorySongEnumerator *playlist = - new MemorySongEnumerator(std::move(parser.songs)); - - g_markup_parse_context_free(context); - - return playlist; + return new MemorySongEnumerator(std::move(parser.songs)); } static const char *const xspf_suffixes[] = { |