From dd82370a80c25322823bade6c9c76845b51eaa71 Mon Sep 17 00:00:00 2001 From: Max Kellermann Date: Thu, 9 Jan 2014 11:57:47 +0100 Subject: playlist/{asx,rss,xspf}: use Expat instead of GLib to parse XML --- src/playlist/AsxPlaylistPlugin.cxx | 114 +++++++----------------------------- src/playlist/RssPlaylistPlugin.cxx | 110 ++++++---------------------------- src/playlist/XspfPlaylistPlugin.cxx | 92 ++++++----------------------- 3 files changed, 59 insertions(+), 257 deletions(-) (limited to 'src/playlist') diff --git a/src/playlist/AsxPlaylistPlugin.cxx b/src/playlist/AsxPlaylistPlugin.cxx index c06200283..4e48dbf8d 100644 --- a/src/playlist/AsxPlaylistPlugin.cxx +++ b/src/playlist/AsxPlaylistPlugin.cxx @@ -21,20 +21,13 @@ #include "AsxPlaylistPlugin.hxx" #include "PlaylistPlugin.hxx" #include "MemorySongEnumerator.hxx" -#include "InputStream.hxx" #include "Song.hxx" #include "tag/TagBuilder.hxx" #include "util/ASCII.hxx" #include "util/Error.hxx" -#include "util/Domain.hxx" +#include "Expat.hxx" #include "Log.hxx" -#include - -#include - -static constexpr Domain asx_domain("asx"); - /** * This is the state object for the GLib XML parser. */ @@ -71,23 +64,9 @@ struct AsxParser { }; -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; @@ -103,9 +82,8 @@ asx_start_element(gcc_unused GMarkupParseContext *context, case AsxParser::ENTRY: if (StringEqualsCaseASCII(element_name, "ref")) { - const gchar *href = get_attribute(attribute_names, - attribute_values, - "href"); + const char *href = + ExpatParser::GetAttributeCase(atts, "href"); if (href != nullptr) parser->location = href; } else if (StringEqualsCaseASCII(element_name, "author")) @@ -119,10 +97,8 @@ asx_start_element(gcc_unused GMarkupParseContext *context, } } -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; @@ -144,10 +120,8 @@ asx_end_element(gcc_unused GMarkupParseContext *context, } } -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; @@ -156,23 +130,13 @@ asx_text(gcc_unused GMarkupParseContext *context, break; case AsxParser::ENTRY: - if (parser->tag_type != TAG_NUM_OF_ITEM_TYPES) { - parser->tag_builder.AddItem(parser->tag_type, - 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, -}; - /* * The playlist object * @@ -182,57 +146,21 @@ static SongEnumerator * asx_open_stream(InputStream &is) { AsxParser parser; - bool success; - Error error2; - GError *error = nullptr; - - /* parse the ASX XML file */ - - GMarkupParseContext *context = - g_markup_parse_context_new(&asx_parser, - G_MARKUP_TREAT_CDATA_AS_TEXT, - &parser, nullptr); - - while (true) { - char buffer[1024]; - size_t 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[] = { diff --git a/src/playlist/RssPlaylistPlugin.cxx b/src/playlist/RssPlaylistPlugin.cxx index 558c74619..604f99baf 100644 --- a/src/playlist/RssPlaylistPlugin.cxx +++ b/src/playlist/RssPlaylistPlugin.cxx @@ -21,20 +21,13 @@ #include "RssPlaylistPlugin.hxx" #include "PlaylistPlugin.hxx" #include "MemorySongEnumerator.hxx" -#include "InputStream.hxx" #include "Song.hxx" #include "tag/TagBuilder.hxx" #include "util/ASCII.hxx" #include "util/Error.hxx" -#include "util/Domain.hxx" +#include "Expat.hxx" #include "Log.hxx" -#include - -#include - -static constexpr Domain rss_domain("rss"); - /** * This is the state object for the GLib XML parser. */ @@ -71,23 +64,9 @@ struct RssParser { :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 -rss_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 +rss_start_element(void *user_data, const XML_Char *element_name, + const XML_Char **atts) { RssParser *parser = (RssParser *)user_data; @@ -103,9 +82,8 @@ rss_start_element(gcc_unused GMarkupParseContext *context, case RssParser::ITEM: if (StringEqualsCaseASCII(element_name, "enclosure")) { - const gchar *href = get_attribute(attribute_names, - attribute_values, - "url"); + const char *href = + ExpatParser::GetAttributeCase(atts, "url"); if (href != nullptr) parser->location = href; } else if (StringEqualsCaseASCII(element_name, "title")) @@ -117,10 +95,8 @@ rss_start_element(gcc_unused GMarkupParseContext *context, } } -static void -rss_end_element(gcc_unused GMarkupParseContext *context, - const gchar *element_name, - gpointer user_data, gcc_unused GError **error) +static void XMLCALL +rss_end_element(void *user_data, const XML_Char *element_name) { RssParser *parser = (RssParser *)user_data; @@ -142,10 +118,8 @@ rss_end_element(gcc_unused GMarkupParseContext *context, } } -static void -rss_text(gcc_unused GMarkupParseContext *context, - const gchar *text, gsize text_len, - gpointer user_data, gcc_unused GError **error) +static void XMLCALL +rss_char_data(void *user_data, const XML_Char *s, int len) { RssParser *parser = (RssParser *)user_data; @@ -155,21 +129,12 @@ rss_text(gcc_unused GMarkupParseContext *context, case RssParser::ITEM: if (parser->tag_type != TAG_NUM_OF_ITEM_TYPES) - parser->tag_builder.AddItem(parser->tag_type, - text, text_len); + parser->tag_builder.AddItem(parser->tag_type, s, len); break; } } -static const GMarkupParser rss_parser = { - rss_start_element, - rss_end_element, - rss_text, - nullptr, - nullptr, -}; - /* * The playlist object * @@ -179,58 +144,21 @@ static SongEnumerator * rss_open_stream(InputStream &is) { RssParser parser; - GMarkupParseContext *context; - char buffer[1024]; - size_t nbytes; - bool success; - Error error2; - GError *error = nullptr; - - /* parse the RSS XML file */ - - context = g_markup_parse_context_new(&rss_parser, - G_MARKUP_TREAT_CDATA_AS_TEXT, - &parser, nullptr); - 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; - } + { + ExpatParser expat(&parser); + expat.SetElementHandler(rss_start_element, rss_end_element); + expat.SetCharacterDataHandler(rss_char_data); - success = g_markup_parse_context_parse(context, buffer, nbytes, - &error); - if (!success) { - FormatError(rss_domain, - "XML parser failed: %s", error->message); - g_error_free(error); - g_markup_parse_context_free(context); + Error error; + if (!expat.Parse(is, error)) { + LogError(error); return nullptr; } } - success = g_markup_parse_context_end_parse(context, &error); - if (!success) { - FormatError(rss_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 rss_suffixes[] = { diff --git a/src/playlist/XspfPlaylistPlugin.cxx b/src/playlist/XspfPlaylistPlugin.cxx index 7c20df57d..2157dd678 100644 --- a/src/playlist/XspfPlaylistPlugin.cxx +++ b/src/playlist/XspfPlaylistPlugin.cxx @@ -26,10 +26,9 @@ #include "tag/TagBuilder.hxx" #include "util/Error.hxx" #include "util/Domain.hxx" +#include "Expat.hxx" #include "Log.hxx" -#include - #include static constexpr Domain xspf_domain("xspf"); @@ -70,12 +69,9 @@ struct 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; @@ -124,10 +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; @@ -165,10 +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; @@ -181,26 +173,17 @@ xspf_text(gcc_unused GMarkupParseContext *context, case XspfParser::TRACK: if (!parser->location.empty() && parser->tag_type != TAG_NUM_OF_ITEM_TYPES) - parser->tag_builder.AddItem(parser->tag_type, - text, text_len); + parser->tag_builder.AddItem(parser->tag_type, s, len); break; case XspfParser::LOCATION: - parser->location.assign(text, text_len); + parser->location.assign(s, len); break; } } -static const GMarkupParser xspf_parser = { - xspf_start_element, - xspf_end_element, - xspf_text, - nullptr, - nullptr, -}; - /* * The playlist object * @@ -210,58 +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, nullptr); - - 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[] = { -- cgit v1.2.3