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authorMax Kellermann <max@duempel.org>2014-12-04 22:58:30 +0100
committerMax Kellermann <max@duempel.org>2014-12-04 23:10:50 +0100
commitaa4c7055f8e0746bd725ffc0cb140373fabcc405 (patch)
tree4d5add82c5dc726d86466cde26e28228b50b8c62 /src/playlist/plugins
parent4b70f9d213e8cb71bc225a73494625e31dfaa721 (diff)
downloadmpd-aa4c7055f8e0746bd725ffc0cb140373fabcc405.tar.gz
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playlist/pls: custom INI parser
Don't use GLib.
Diffstat (limited to 'src/playlist/plugins')
-rw-r--r--src/playlist/plugins/PlsPlaylistPlugin.cxx193
1 files changed, 107 insertions, 86 deletions
diff --git a/src/playlist/plugins/PlsPlaylistPlugin.cxx b/src/playlist/plugins/PlsPlaylistPlugin.cxx
index f7724f522..4f7c5a1ff 100644
--- a/src/playlist/plugins/PlsPlaylistPlugin.cxx
+++ b/src/playlist/plugins/PlsPlaylistPlugin.cxx
@@ -21,121 +21,142 @@
#include "PlsPlaylistPlugin.hxx"
#include "../PlaylistPlugin.hxx"
#include "../MemorySongEnumerator.hxx"
-#include "input/InputStream.hxx"
+#include "input/TextInputStream.hxx"
#include "DetachedSong.hxx"
#include "tag/TagBuilder.hxx"
+#include "util/ASCII.hxx"
+#include "util/StringUtil.hxx"
+#include "util/DivideString.hxx"
#include "util/Error.hxx"
#include "util/Domain.hxx"
-#include "Log.hxx"
-
-#include <glib.h>
#include <string>
-#include <stdio.h>
-#include <stdio.h>
+#include <stdlib.h>
static constexpr Domain pls_domain("pls");
-static void
-pls_parser(GKeyFile *keyfile, std::forward_list<DetachedSong> &songs)
+static bool
+FindPlaylistSection(TextInputStream &is)
{
- gchar *value;
- GError *error = nullptr;
- int num_entries = g_key_file_get_integer(keyfile, "playlist",
- "NumberOfEntries", &error);
- if (error) {
- FormatError(pls_domain,
- "Invalid PLS file: '%s'", error->message);
- g_error_free(error);
- error = nullptr;
-
- /* Hack to work around shoutcast failure to comform to spec */
- num_entries = g_key_file_get_integer(keyfile, "playlist",
- "numberofentries", &error);
- if (error) {
- g_error_free(error);
- error = nullptr;
- }
+ char *line;
+ while ((line = is.ReadLine()) != nullptr) {
+ line = Strip(line);
+ if (StringEqualsCaseASCII(line, "[playlist]"))
+ return true;
}
- for (; num_entries > 0; --num_entries) {
- char key[64];
- sprintf(key, "File%u", num_entries);
- char *uri = g_key_file_get_string(keyfile, "playlist", key,
- &error);
- if(error) {
- FormatError(pls_domain, "Invalid PLS entry %s: '%s'",
- key, error->message);
- g_error_free(error);
- return;
- }
+ return false;
+}
- TagBuilder tag;
+static bool
+ParsePls(TextInputStream &is, std::forward_list<DetachedSong> &songs)
+{
+ assert(songs.empty());
- sprintf(key, "Title%u", num_entries);
- value = g_key_file_get_string(keyfile, "playlist", key,
- nullptr);
- if (value != nullptr)
- tag.AddItem(TAG_TITLE, value);
+ if (!FindPlaylistSection(is))
+ return false;
- g_free(value);
+ unsigned n_entries = 0;
- sprintf(key, "Length%u", num_entries);
- int length = g_key_file_get_integer(keyfile, "playlist", key,
- nullptr);
- if (length > 0)
- tag.SetDuration(SignedSongTime::FromS(length));
+ struct Entry {
+ std::string file, title;
+ int length;
- songs.emplace_front(uri, tag.Commit());
- g_free(uri);
- }
+ Entry():length(-1) {}
+ };
-}
+ static constexpr unsigned MAX_ENTRIES = 65536;
-static SongEnumerator *
-pls_open_stream(InputStream &is)
-{
- GError *error = nullptr;
- Error error2;
-
- std::string kf_data;
-
- do {
- char buffer[1024];
- size_t nbytes = is.LockRead(buffer, sizeof(buffer), error2);
- if (nbytes == 0) {
- if (error2.IsDefined()) {
- LogError(error2);
- return nullptr;
- }
+ std::vector<Entry> entries;
+
+ char *line;
+ while ((line = is.ReadLine()) != nullptr) {
+ line = Strip(line);
+ if (*line == 0 || *line == ';')
+ continue;
+
+ if (*line == '[')
+ /* another section starts; we only want
+ [Playlist], so stop here */
break;
+
+ const DivideString ds(line, '=', true);
+ if (!ds.IsDefined())
+ continue;
+
+ const char *const name = ds.GetFirst();
+ const char *const value = ds.GetSecond();
+
+ if (StringEqualsCaseASCII(name, "NumberOfEntries")) {
+ n_entries = strtoul(value, nullptr, 10);
+ if (n_entries == 0)
+ /* empty file - nothing remains to be
+ done */
+ return true;
+
+ if (n_entries > MAX_ENTRIES)
+ n_entries = MAX_ENTRIES;
+ entries.resize(n_entries);
+ } else if (StringEqualsCaseASCII(name, "File", 4)) {
+ unsigned i = strtoul(name + 4, nullptr, 10);
+ if (i >= 1 && i <= (n_entries > 0 ? n_entries : MAX_ENTRIES)) {
+ if (entries.size() < i)
+ entries.resize(i);
+ entries[i - 1].file = value;
+ }
+ } else if (StringEqualsCaseASCII(name, "Title", 5)) {
+ unsigned i = strtoul(name + 5, nullptr, 10);
+ if (i >= 1 && i <= (n_entries > 0 ? n_entries : MAX_ENTRIES)) {
+ if (entries.size() < i)
+ entries.resize(i);
+ entries[i - 1].title = value;
+ }
+ } else if (StringEqualsCaseASCII(name, "Length", 6)) {
+ unsigned i = strtoul(name + 6, nullptr, 10);
+ if (i >= 1 && i <= (n_entries > 0 ? n_entries : MAX_ENTRIES)) {
+ if (entries.size() < i)
+ entries.resize(i);
+ entries[i - 1].length = atoi(value);
+ }
}
+ }
- kf_data.append(buffer, nbytes);
- /* Limit to 64k */
- } while (kf_data.length() < 65536);
+ if (n_entries == 0)
+ /* no "NumberOfEntries" found */
+ return false;
- if (kf_data.empty()) {
- LogWarning(pls_domain, "KeyFile parser failed: No Data");
- return nullptr;
- }
+ auto i = songs.before_begin();
+ for (const auto &entry : entries) {
+ const char *uri = entry.file.c_str();
- GKeyFile *keyfile = g_key_file_new();
- if (!g_key_file_load_from_data(keyfile,
- kf_data.data(), kf_data.length(),
- G_KEY_FILE_NONE, &error)) {
- FormatError(pls_domain,
- "KeyFile parser failed: %s", error->message);
- g_error_free(error);
- g_key_file_free(keyfile);
- return nullptr;
+ TagBuilder tag;
+ if (!entry.title.empty())
+ tag.AddItem(TAG_TITLE, entry.title.c_str());
+
+ if (entry.length > 0)
+ tag.SetDuration(SignedSongTime::FromS(entry.length));
+
+ i = songs.emplace_after(i, uri, tag.Commit());
}
+ return true;
+}
+
+static bool
+ParsePls(InputStream &is, std::forward_list<DetachedSong> &songs)
+{
+ TextInputStream tis(is);
+ return ParsePls(tis, songs);
+}
+
+static SongEnumerator *
+pls_open_stream(InputStream &is)
+{
std::forward_list<DetachedSong> songs;
- pls_parser(keyfile, songs);
- g_key_file_free(keyfile);
+ if (!ParsePls(is, songs))
+ return nullptr;
return new MemorySongEnumerator(std::move(songs));
}