ref: fe1eb39db7ae6904924f3ab1f6f9b34416f2eb1b
dir: /sys/src/cmd/aux/cddb.c/
#include <u.h>
#include <libc.h>
#include <bio.h>
#include <ctype.h>
char *server = "gnudb.org";
int debug;
#define DPRINT if(debug)fprint
int tflag;
int Tflag;
char *eflag;
typedef struct Track Track;
struct Track {
int n;
char *title;
char *artist;
};
enum {
MTRACK = 64,
};
typedef struct Toc Toc;
struct Toc {
ulong diskid;
int ntrack;
char *title;
char *year;
char *artist;
Track track[MTRACK];
};
void*
emalloc(uint n)
{
void *p;
p = malloc(n);
if(p == nil)
sysfatal("can't malloc: %r");
memset(p, 0, n);
return p;
}
char*
estrdup(char *s)
{
char *t;
t = emalloc(strlen(s)+1);
strcpy(t, s);
return t;
}
static void
dumpcddb(Toc *t)
{
int i, n, s;
print("title\t%s\n", t->title);
if(t->year[0] != 0)
print("year\t%s\n", t->year);
if(t->artist[0] != 0)
print("artist\t%s\n", t->artist);
for(i=0; i<t->ntrack; i++){
print("%d\t%s", i+1, t->track[i].title);
if(tflag){
n = t->track[i+1].n;
if(i == t->ntrack-1)
n *= 75;
s = (n - t->track[i].n)/75;
print("\t%d:%2.2d", s/60, s%60);
}
if(t->track[i].artist[0] != 0)
print("\t%s", t->track[i].artist);
print("\n");
}
if(Tflag){
s = t->track[i].n;
print("Total time: %d:%2.2d\n", s/60, s%60);
}
}
static void
dumpencode(Toc *t)
{
int i;
quotefmtinstall();
for(i=0; i < t->ntrack; i++){
print("</mnt/cd/a%03d audio/flacenc ", i);
print("-T 'title='^%q -T 'album='^%q -T 'track=%d' ", t->track[i].title, t->title, i+1);
if(t->year[0] != 0)
print("-T 'year='^%q ", t->year);
if(t->track[i].artist[0] != 0 || t->artist[0] != 0)
print("-T 'artist='^%q ", t->track[i].artist[0] != 0 ? t->track[i].artist : t->artist);
print(">%q/a%03d.flac\n", eflag, i);
}
}
static char*
split(char *s)
{
char *p;
if((p = strchr(s, '/')) == nil)
return nil;
p[-1] = 0;
return p+2;
}
static int
cddbfilltoc(Toc *t)
{
int fd;
int i;
char *p, *q, *a;
Biobuf bin;
char *f[10];
int nf;
char *id, *categ;
fd = dial(netmkaddr(server, "tcp", "8880"), 0, 0, 0);
if(fd < 0) {
fprint(2, "%s: %s: cannot dial: %r\n", argv0, server);
return -1;
}
Binit(&bin, fd, OREAD);
if((p=Brdline(&bin, '\n')) == nil || atoi(p)/100 != 2) {
died:
close(fd);
Bterm(&bin);
fprint(2, "%s: error talking to cddb server %s\n",
argv0, server);
if(p) {
p[Blinelen(&bin)-1] = 0;
fprint(2, "%s: server says: %s\n", argv0, p);
}
return -1;
}
fprint(fd, "cddb hello gre plan9 9cd 1.0\r\n");
if((p = Brdline(&bin, '\n')) == nil || atoi(p)/100 != 2)
goto died;
/*
* Protocol level 6 is the same as level 5 except that
* the character set is now UTF-8 instead of ISO-8859-1.
*/
fprint(fd, "proto 6\r\n");
DPRINT(2, "proto 6\r\n");
if((p = Brdline(&bin, '\n')) == nil || atoi(p)/100 != 2)
goto died;
p[Blinelen(&bin)-1] = 0;
DPRINT(2, "cddb: %s\n", p);
fprint(fd, "cddb query %8.8lux %d", t->diskid, t->ntrack);
DPRINT(2, "cddb query %8.8lux %d", t->diskid, t->ntrack);
for(i=0; i<t->ntrack; i++) {
fprint(fd, " %d", t->track[i].n);
DPRINT(2, " %d", t->track[i].n);
}
fprint(fd, " %d\r\n", t->track[t->ntrack].n);
DPRINT(2, " %d\r\n", t->track[t->ntrack].n);
if((p = Brdline(&bin, '\n')) == nil || atoi(p)/100 != 2)
goto died;
p[Blinelen(&bin)-1] = 0;
DPRINT(2, "cddb: %s\n", p);
nf = tokenize(p, f, nelem(f));
if(nf < 1)
goto died;
switch(atoi(f[0])) {
case 200: /* exact match */
if(nf < 3)
goto died;
categ = f[1];
id = f[2];
break;
case 210: /* exact matches */
case 211: /* close matches */
if((p = Brdline(&bin, '\n')) == nil)
goto died;
if(p[0] == '.') /* no close matches? */
goto died;
p[Blinelen(&bin)-1] = '\0';
/* accept first match */
nf = tokenize(p, f, nelem(f));
if(nf < 2)
goto died;
categ = f[0];
id = f[1];
/* snarf rest of buffer */
while(p[0] != '.') {
if((p = Brdline(&bin, '\n')) == nil)
goto died;
p[Blinelen(&bin)-1] = '\0';
DPRINT(2, "cddb: %s\n", p);
}
break;
case 202: /* no match */
default:
goto died;
}
t->title = "";
t->artist = "";
t->year = "";
for(i=0; i<t->ntrack; i++) {
t->track[i].title = "";
t->track[i].artist = "";
}
/* fetch results for this cd */
fprint(fd, "cddb read %s %s\r\n", categ, id);
do {
if((p = Brdline(&bin, '\n')) == nil)
goto died;
q = p+Blinelen(&bin)-1;
while(isspace(*q))
*q-- = 0;
DPRINT(2, "cddb %s\n", p);
if(strncmp(p, "DTITLE=", 7) == 0) {
p += 7;
a = split(p);
if(a != nil) {
t->artist = estrdup(p);
p = a;
}
t->title = estrdup(p);
}
else if(strncmp(p, "DYEAR=", 6) == 0) {
t->year = estrdup(p+6);
}
else if(strncmp(p, "TTITLE", 6) == 0 && isdigit(p[6])) {
i = atoi(p+6);
if(i < t->ntrack) {
p += 6;
while(isdigit(*p))
p++;
if(*p == '=')
p++;
a = split(p);
if(a != nil) {
t->track[i].artist = estrdup(p);
p = a;
}
t->track[i].title = estrdup(p);
}
}
} while(*p != '.');
fprint(fd, "quit\r\n");
close(fd);
Bterm(&bin);
return 0;
}
void
usage(void)
{
fprint(2, "usage: aux/cddb [-DTt] [-s server] query diskid n ...\n");
exits("usage");
}
void
main(int argc, char **argv)
{
int i;
Toc toc;
ARGBEGIN{
case 'D':
debug = 1;
break;
case 's':
server = EARGF(usage());
break;
case 'e':
eflag = EARGF(usage());
break;
case 'T':
Tflag = 1;
/*FALLTHROUGH*/
case 't':
tflag = 1;
break;
}ARGEND
if(argc < 3 || strcmp(argv[0], "query") != 0)
usage();
toc.diskid = strtoul(argv[1], 0, 16);
toc.ntrack = atoi(argv[2]);
if(argc != 3+toc.ntrack+1)
sysfatal("argument count does not match given ntrack");
for(i=0; i<=toc.ntrack; i++)
toc.track[i].n = atoi(argv[3+i]);
if(cddbfilltoc(&toc) < 0)
exits("whoops");
if(eflag != nil)
dumpencode(&toc);
else
dumpcddb(&toc);
exits(nil);
}