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#include "../../../plugins/utils/EpisodeNameParser.hpp"
namespace QuickMedia {
static bool is_num(char c) {
return c >= '0' && c <= '9';
}
static bool char_to_num(char c) {
return c - '0';
}
// Finds and parses SXXEXX where X is a number, returns the index to after the pattern or std::string_view::npos
static size_t parse_season_episode_pattern(std::string_view episode_name, int *season, int *episode) {
*season = 0;
*episode = 0;
size_t index = 0;
while(true) {
index = episode_name.find('S', index);
if(index == std::string_view::npos)
return std::string_view::npos;
if(index + 6 >= episode_name.size())
return std::string_view::npos;
if(is_num(episode_name[index + 1]) && is_num(episode_name[index + 2]) && episode_name[index + 3] == 'E'
&& is_num(episode_name[index + 4]) && is_num(episode_name[index + 5]))
{
*season = char_to_num(episode_name[index + 1]) * 10 + char_to_num(episode_name[index + 2]);
*episode = char_to_num(episode_name[index + 4]) * 10 + char_to_num(episode_name[index + 5]);
return index + 6;
}
++index;
}
}
static bool has_season_in_name(std::string_view episode_name) {
size_t sep_count = 0;
size_t index = 0;
while(true) {
size_t next_index = episode_name.find(" - ", index);
if(next_index == std::string_view::npos)
break;
index = next_index + 3;
++sep_count;
}
return sep_count >= 2;
}
static bool is_whitespace(char c) {
return c == ' ' || c == '\n' || c == '\t' || c == '\v';
}
static std::string_view strip_left(std::string_view str) {
size_t i = 0;
for(; i < str.size(); ++i) {
if(!is_whitespace(str[i]))
break;
}
return str.substr(i);
}
static std::string_view strip_right(std::string_view str) {
long i = (long)str.size() - 1;
for(; i >= 0; --i) {
if(!is_whitespace(str[i]))
break;
}
return str.substr(0, i + 1);
}
static std::string_view episode_name_extract_group(std::string_view &episode_name) {
episode_name = strip_left(episode_name);
if(episode_name[0] == '[') {
size_t group_end_index = episode_name.find(']', 1);
if(group_end_index == std::string_view::npos)
return {};
std::string_view group = episode_name.substr(1, group_end_index - 1);
episode_name.remove_prefix(group_end_index + 1);
return group;
}
return {};
}
static std::string_view episode_name_extract_anime(std::string_view &episode_name) {
episode_name = strip_left(episode_name);
size_t episode_or_season_sep_index = episode_name.find(" - ");
if(episode_or_season_sep_index == std::string_view::npos)
episode_or_season_sep_index = episode_name.size();
std::string_view anime = episode_name.substr(0, episode_or_season_sep_index);
anime = strip_right(anime);
if(episode_or_season_sep_index + 3 > episode_name.size())
episode_name = {};
else
episode_name.remove_prefix(episode_or_season_sep_index + 3);
return anime;
}
static std::string_view episode_name_extract_season(std::string_view &episode_name) {
return episode_name_extract_anime(episode_name);
}
static bool is_real_num(char c) {
return (c >= '0' && c <= '9') || c == '.';
}
static void remove_trailing_characters(std::string_view &str, char c) {
while(!str.empty() && str.back() == c) {
str.remove_suffix(1);
}
}
static std::string_view episode_name_extract_episode(std::string_view &episode_name) {
episode_name = strip_left(episode_name);
size_t i = 0;
for(; i < episode_name.size(); ++i) {
if(!is_real_num(episode_name[i]))
break;
}
if(i == 0)
return {};
std::string_view episode = episode_name.substr(0, i);
remove_trailing_characters(episode, '.');
episode_name.remove_prefix(i + 1);
return episode;
}
static bool ends_with(std::string_view str, std::string_view substr) {
return str.size() >= substr.size() && str.substr(str.size() - substr.size()) == substr;
}
std::optional<EpisodeNameParts> episode_name_extract_parts(std::string_view episode_name) {
const std::string_view full_episode_name = episode_name;
EpisodeNameParts name_parts;
int season = 0;
int episode = 0;
size_t after_season_episode_pattern = parse_season_episode_pattern(episode_name, &season, &episode);
const bool has_season = after_season_episode_pattern != std::string_view::npos || has_season_in_name(episode_name);
name_parts.group = episode_name_extract_group(episode_name);
name_parts.anime = episode_name_extract_anime(episode_name);
if(name_parts.anime.empty())
return std::nullopt;
if(after_season_episode_pattern == std::string_view::npos) {
if(has_season)
name_parts.season = episode_name_extract_season(episode_name);
name_parts.episode = episode_name_extract_episode(episode_name);
if(name_parts.episode.empty())
return std::nullopt;
} else {
name_parts.season = full_episode_name.substr(after_season_episode_pattern - 5, 2);
name_parts.episode = full_episode_name.substr(after_season_episode_pattern - 2, 2);
}
if(episode_name.find("480p") != std::string_view::npos)
name_parts.resolution = "480p";
else if(episode_name.find("720p") != std::string_view::npos)
name_parts.resolution = "720p";
else if(episode_name.find("1080p") != std::string_view::npos)
name_parts.resolution = "1080p";
else if(episode_name.find("2160p") != std::string_view::npos)
name_parts.resolution = "4k";
else if(episode_name.find("1280x720") != std::string_view::npos)
name_parts.resolution = "720p";
else if(episode_name.find("1920x1080") != std::string_view::npos)
name_parts.resolution = "1080p";
else if(episode_name.find("3840x2160") != std::string_view::npos)
name_parts.resolution = "4k";
if(ends_with(episode_name, ".mkv"))
name_parts.file_ext = ".mkv";
else if(ends_with(episode_name, ".mp4"))
name_parts.file_ext = ".mp4";
else if(ends_with(episode_name, ".avi"))
name_parts.file_ext = ".avi";
else if(ends_with(episode_name, ".webm"))
name_parts.file_ext = ".webm";
else if(ends_with(episode_name, ".wmv"))
name_parts.file_ext = ".wmv";
else if(ends_with(episode_name, ".mp3"))
name_parts.file_ext = ".mp3";
else if(ends_with(episode_name, ".flac"))
name_parts.file_ext = ".flac";
else if(ends_with(episode_name, ".opus"))
name_parts.file_ext = ".opus";
else if(ends_with(episode_name, ".wav"))
name_parts.file_ext = ".wav";
else if(ends_with(episode_name, ".ogg"))
name_parts.file_ext = ".ogg";
return name_parts;
}
}
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