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#include "AudioFile.h"
#include <iostream>
#include <iomanip>
#include <sstream>
#include <algorithm>
#include <cstdio>
#include <cstring>
#include <cerrno>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <dirent.h>
#include <unicode/translit.h>
#include <unicode/unistr.h>
using namespace std;
#define RED "\x1b[31m"
#define GREEN "\x1b[32m"
#define YELLOW "\x1b[33m"
#define BLUE "\x1b[34m"
#define MAGENTA "\x1b[35m"
#define CYAN "\x1b[36m"
#define RESET "\x1b[0m"
static string base_destination;
static Transliterator *transliterator;
void process_file(const char *filename, ino_t inode);
void process_directory(const char *directory);
void process_path(const char *path);
string generate_path(const AudioFile &audio);
string truncated(const string &str, const string &ext);
string transliterated(const string &str);
void strip_slash(string &name);
void disc_track(unsigned int disc, unsigned int track, ostringstream &path);
void rename_path(const string &source, const string &stem, ino_t inode);
void make_parents(const string &filepath);
string strip_slash(const string &name)
{
string ret(name);
replace(ret.begin(), ret.end(), '/', '-');
return ret;
}
void disc_track(unsigned int disc, unsigned int track, ostringstream &path)
{
if (disc > 0) {
path << disc;
if (track > 0)
path << '-';
else
path << ' ';
}
if (track > 0)
path << setw(2) << setfill('0') << track << setw(0) << ' ';
}
string generate_path(const AudioFile &audio)
{
ostringstream path;
if (audio.compilation()) {
path << "Various Artists/";
if (audio.album().length() == 0)
path << "Unknown Album/";
else
path << strip_slash(audio.album()) << '/';
disc_track(audio.disc(), audio.track(), path);
if (audio.artist().length() > 0)
path << strip_slash(audio.artist()) << " - ";
path << strip_slash(audio.title());
} else {
if (audio.artist().length() == 0)
path << "Unknown Artist/";
else
path << strip_slash(audio.artist()) << '/';
if (audio.album().length() > 0)
path << strip_slash(audio.album()) << '/';
disc_track(audio.disc(), audio.track(), path);
path << strip_slash(audio.title());
}
return transliterated(path.str());
}
string truncated(const string &str, const string &ext)
{
stringstream stream;
size_t current, next = -1;
for (;;) {
current = next + 1;
next = str.find_first_of('/', current);
if (current)
stream << '/';
if (next == string::npos) {
stream << str.substr(current, static_cast<size_t>(255 - ext.length())) << ext;
break;
}
stream << str.substr(current, min(static_cast<size_t>(255), next - current));
}
return stream.str();
}
string transliterated(const string &str)
{
UnicodeString in(str.c_str(), "UTF-8");
transliterator->transliterate(in);
char out[in.length() + 1];
out[in.extract(0, in.length(), out, in.length(), "ASCII")] = '\0';
return out;
}
void rename_path(const string &source, const string &stem, ino_t inode)
{
size_t pos = source.find_last_of('.');
string ext;
if (pos != string::npos) {
ext = source.substr(pos);
transform(ext.begin(), ext.end(), ext.begin(), ::tolower);
}
string destination = truncated(base_destination + stem, ext);
unsigned long counter = 0;
for (;;) {
struct stat sbuf;
if (stat(destination.c_str(), &sbuf)) {
if (errno == ENOENT)
break;
}
if (sbuf.st_ino == inode)
return;
ostringstream stream;
stream << base_destination << stem << ' ' << ++counter;
destination = truncated(stream.str(), ext);
if (counter == 0)
return;
}
make_parents(destination);
if (!rename(source.c_str(), destination.c_str()))
cout << CYAN << "move" << RESET << ": " << YELLOW << source << RESET << " ==> " << GREEN << destination << RESET << endl;
else {
cerr << RED;
perror(destination.c_str());
cerr << RESET;
}
}
void make_parents(const string &filepath)
{
string path;
size_t current, next = -1;
for (;;) {
current = next + 1;
if ((next = filepath.find_first_of('/', current)) == string::npos)
return;
path.append(filepath.substr(current, next - current));
path.append("/");
if (!mkdir(path.c_str(), 0755))
cout << MAGENTA << "mkdir" << RESET << ": " << path.c_str() << endl;
}
}
void process_file(const char *filename, ino_t inode)
{
AudioFile audio(filename);
if (!audio.isValid()) {
cerr << RED << filename << ": not a valid audio file" << RESET << endl;
return;
}
rename_path(filename, generate_path(audio), inode);
}
void process_directory(const char *directory)
{
DIR *dir = opendir(directory);
if (!dir)
return;
while (struct dirent *entry = readdir(dir)) {
if (entry->d_name[0] == '.' && (entry->d_name[1] == '\0' ||
(entry->d_name[1] == '.' && strlen(entry->d_name) == 2)))
continue;
char joined[strlen(directory) + strlen(entry->d_name) + 2];
sprintf(joined, "%s/%s", directory, entry->d_name);
process_path(joined);
}
closedir(dir);
if (!rmdir(directory))
cout << BLUE << "rmdir" << RESET << ": " << directory << endl;
}
void process_path(const char *path)
{
struct stat sbuf;
if (stat(path, &sbuf)) {
cerr << RED;
perror(path);
cerr << RESET;
return;
}
if (S_ISREG(sbuf.st_mode))
process_file(path, sbuf.st_ino);
else if (S_ISDIR(sbuf.st_mode))
process_directory(path);
else
cerr << RED << path << ": not a file nor a directory" << RESET << endl;
}
int main(int argc, char *argv[])
{
size_t len;
UErrorCode status = U_ZERO_ERROR;
transliterator = Transliterator::createInstance("Latin; NFD; [:Nonspacing Mark:] Remove; NFC; [:^ASCII:] Remove; [\\:;*?\"<>|\\\\] Remove", UTRANS_FORWARD, status);
if (!transliterator || status != U_ZERO_ERROR) {
cerr << RED << "Fatal: Could not initialize transliterator." << RESET << endl;
return EXIT_FAILURE;
}
if (char *base = getenv("MUSICDIR")) {
base_destination = base;
if (base_destination[base_destination.length() - 1] != '/')
base_destination.append("/");
} else if (char *home = getenv("HOME")) {
len = strlen(home);
if (home[len - 1] == '/')
home[len - 1] = '\0';
base_destination = string(home) + "/Music/";
} else {
cerr << RED << "Fatal: Could not determine the music directory. Try setting the MUSICDIR or HOME environment variable." << RESET << endl;
return EXIT_FAILURE;
}
for (int i = 1; i < argc; ++i) {
size_t len = strlen(argv[i]);
if (argv[i][len - 1] == '/')
argv[i][len - 1] = '\0';
process_path(argv[i]);
}
return 0;
}
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