diff options
Diffstat (limited to '')
| -rw-r--r-- | src/playlist/AsxPlaylistPlugin.cxx | 175 |
1 files changed, 38 insertions, 137 deletions
diff --git a/src/playlist/AsxPlaylistPlugin.cxx b/src/playlist/AsxPlaylistPlugin.cxx index 94198b8c3..4e48dbf8d 100644 --- a/src/playlist/AsxPlaylistPlugin.cxx +++ b/src/playlist/AsxPlaylistPlugin.cxx @@ -21,21 +21,13 @@ #include "AsxPlaylistPlugin.hxx" #include "PlaylistPlugin.hxx" #include "MemorySongEnumerator.hxx" -#include "InputStream.hxx" #include "Song.hxx" -#include "tag/Tag.hxx" +#include "tag/TagBuilder.hxx" #include "util/ASCII.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 asx_domain("asx"); - /** * This is the state object for the GLib XML parser. */ @@ -44,7 +36,7 @@ struct AsxParser { * 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. @@ -58,36 +50,23 @@ struct AsxParser { * valid if state==ENTRY. 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 "ref" element. */ - Song *song; + std::string location; + + TagBuilder tag_builder; AsxParser() :state(ROOT) {} }; -static const gchar * -get_attribute(const gchar **attribute_names, const gchar **attribute_values, - const gchar *name) -{ - for (unsigned i = 0; attribute_names[i] != nullptr; ++i) - if (StringEqualsCaseASCII(attribute_names[i], name)) - return attribute_values[i]; - - return nullptr; -} - -static void -asx_start_element(gcc_unused GMarkupParseContext *context, - const gchar *element_name, - const gchar **attribute_names, - const gchar **attribute_values, - gpointer user_data, gcc_unused GError **error) +static void XMLCALL +asx_start_element(void *user_data, const XML_Char *element_name, + const XML_Char **atts) { AsxParser *parser = (AsxParser *)user_data; @@ -95,48 +74,31 @@ asx_start_element(gcc_unused GMarkupParseContext *context, case AsxParser::ROOT: if (StringEqualsCaseASCII(element_name, "entry")) { parser->state = AsxParser::ENTRY; - parser->song = Song::NewRemote("asx:"); - parser->tag = TAG_NUM_OF_ITEM_TYPES; + parser->location.clear(); + parser->tag_type = TAG_NUM_OF_ITEM_TYPES; } break; case AsxParser::ENTRY: if (StringEqualsCaseASCII(element_name, "ref")) { - const gchar *href = get_attribute(attribute_names, - attribute_values, - "href"); - if (href != nullptr) { - /* create new song object, and copy - the existing tag over; we cannot - replace the existing song's URI, - because that attribute is - immutable */ - Song *song = Song::NewRemote(href); - - if (parser->song != nullptr) { - song->tag = parser->song->tag; - parser->song->tag = nullptr; - parser->song->Free(); - } - - parser->song = song; - } + const char *href = + ExpatParser::GetAttributeCase(atts, "href"); + if (href != nullptr) + parser->location = href; } else if (StringEqualsCaseASCII(element_name, "author")) /* is that correct? or should it be COMPOSER or PERFORMER? */ - parser->tag = TAG_ARTIST; + parser->tag_type = TAG_ARTIST; else if (StringEqualsCaseASCII(element_name, "title")) - parser->tag = TAG_TITLE; + parser->tag_type = TAG_TITLE; break; } } -static void -asx_end_element(gcc_unused GMarkupParseContext *context, - const gchar *element_name, - gpointer user_data, gcc_unused GError **error) +static void XMLCALL +asx_end_element(void *user_data, const XML_Char *element_name) { AsxParser *parser = (AsxParser *)user_data; @@ -146,23 +108,20 @@ asx_end_element(gcc_unused GMarkupParseContext *context, case AsxParser::ENTRY: if (StringEqualsCaseASCII(element_name, "entry")) { - if (strcmp(parser->song->uri, "asx:") != 0) - parser->songs.emplace_front(parser->song); - else - parser->song->Free(); + if (!parser->location.empty()) + parser->songs.emplace_front(std::move(parser->location), + parser->tag_builder.Commit()); parser->state = AsxParser::ROOT; } else - parser->tag = TAG_NUM_OF_ITEM_TYPES; + parser->tag_type = TAG_NUM_OF_ITEM_TYPES; break; } } -static void -asx_text(gcc_unused GMarkupParseContext *context, - const gchar *text, gsize text_len, - gpointer user_data, gcc_unused GError **error) +static void XMLCALL +asx_char_data(void *user_data, const XML_Char *s, int len) { AsxParser *parser = (AsxParser *)user_data; @@ -171,34 +130,13 @@ asx_text(gcc_unused GMarkupParseContext *context, break; case AsxParser::ENTRY: - if (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->tag_type != TAG_NUM_OF_ITEM_TYPES) + parser->tag_builder.AddItem(parser->tag_type, s, len); break; } } -static const GMarkupParser asx_parser = { - asx_start_element, - asx_end_element, - asx_text, - nullptr, - nullptr, -}; - -static void -asx_parser_destroy(gpointer data) -{ - AsxParser *parser = (AsxParser *)data; - - if (parser->state >= AsxParser::ENTRY) - parser->song->Free(); -} - /* * The playlist object * @@ -208,58 +146,21 @@ static SongEnumerator * asx_open_stream(InputStream &is) { AsxParser parser; - GMarkupParseContext *context; - char buffer[1024]; - size_t nbytes; - bool success; - Error error2; - GError *error = nullptr; - - /* parse the ASX XML file */ - - context = g_markup_parse_context_new(&asx_parser, - G_MARKUP_TREAT_CDATA_AS_TEXT, - &parser, asx_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) { - FormatErrno(asx_domain, - "XML parser failed: %s", error->message); - g_error_free(error); - g_markup_parse_context_free(context); + { + ExpatParser expat(&parser); + expat.SetElementHandler(asx_start_element, asx_end_element); + expat.SetCharacterDataHandler(asx_char_data); + + Error error; + if (!expat.Parse(is, error)) { + LogError(error); return nullptr; } } - success = g_markup_parse_context_end_parse(context, &error); - if (!success) { - FormatErrno(asx_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 asx_suffixes[] = { |