code: plan9front

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aux/cddb: Provide -e option to print commands to rip audio with tags.

Also parse title/track artist and year.

--- a/sys/man/4/cdfs

+++ b/sys/man/4/cdfs

@@ -19,6 +19,9 @@

 ] [

 .B -s

 .I server

+] [

+.B -e

+.I dir

 ]

 .B query

 .I diskid

@@ -175,7 +178,7 @@

 Additional lines may further describe the current disc.

 .PP

 .I Aux/cddb

-takes 4 optional arguments.

+takes 5 optional arguments.

 The

 .B -s

 option makes

@@ -183,7 +186,7 @@

 use

 .I server

 for the query instead of

-.LR freedb.freedb.org .

+.LR gnudb.org .

 The

 .B -D

 option causes the raw database response from the server to be dumped

@@ -195,6 +198,12 @@

 is like

 .B -t

 but prints a final line with the total time.

+The

+.B -e

+option will print rc commands using

+.IR audio/flacenc (1)

+to encode and tag audio tracks from the disc to output directory

+.I dir .

 .SH EXAMPLES

 Backup to a BD-R disc:

 .br

--- a/sys/src/cmd/aux/cddb.c

+++ b/sys/src/cmd/aux/cddb.c

@@ -9,11 +9,13 @@

 #define DPRINT if(debug)fprint

 int tflag;

 int Tflag;

+char *eflag;

 typedef struct Track Track;

 struct Track {

 	int n;

 	char *title;

+	char *artist;

 };

 enum {

@@ -25,6 +27,8 @@

 	ulong diskid;

 	int ntrack;

 	char *title;

+	char *year;

+	char *artist;

 	Track track[MTRACK];

 };

@@ -55,17 +59,23 @@

 {

 	int i, n, s;

-	print("title	%s\n", t->title);

+	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("%d\t%s\t%d:%2.2d\n", i+1, t->track[i].title, s/60, s%60);

+			print("\t%d:%2.2d", s/60, s%60); 

 		}

-		else

-			print("%d\t%s\n", i+1, t->track[i].title);

+		if(t->track[i].artist[0] != 0)

+			print("\t%s", t->track[i].artist);

+		print("\n");

 	}

 	if(Tflag){

 		s = t->track[i].n;

@@ -73,23 +83,40 @@

 	}

 }

-char*

-append(char *a, char *b)

+static void

+dumpencode(Toc *t)

 {

-	char *c;

+	int i;

-	c = emalloc(strlen(a)+strlen(b)+1);

-	strcpy(c, a);

-	strcat(c, b);

-	return c;

+	quotefmtinstall();

+	for(i=0; i < t->ntrack; i++){

+		print("</mnt/cd/a%03d audio/flacenc ", i);

+		print("-T 'title='^%q -T 'trackno=%d' ", t->track[i].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;

+	char *p, *q, *a;

 	Biobuf bin;

 	char *f[10];

 	int nf;

@@ -183,8 +210,12 @@

 	}

 	t->title = "";

-	for(i=0; i<t->ntrack; i++)

+	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);

@@ -195,8 +226,18 @@

 		while(isspace(*q))

 			*q-- = 0;

 DPRINT(2, "cddb %s\n", p);

-		if(strncmp(p, "DTITLE=", 7) == 0)

-			t->title = append(t->title, p+7);

+		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) {

@@ -205,8 +246,12 @@

 					p++;

 				if(*p == '=')

 					p++;

-

-				t->track[i].title = append(t->track[i].title, estrdup(p));

+				a = split(p);

+				if(a != nil) {

+					t->track[i].artist = estrdup(p);

+					p = a;

+				}

+				t->track[i].title = estrdup(p);	

 			}

 		} 

 	} while(*p != '.');

@@ -238,6 +283,9 @@

 	case 's':

 		server = EARGF(usage());

 		break;

+	case 'e':

+		eflag = EARGF(usage());

+		break;

 	case 'T':

 		Tflag = 1;

 		/*FALLTHROUGH*/

@@ -260,6 +308,9 @@

 	if(cddbfilltoc(&toc) < 0)

 		exits("whoops");

-	dumpcddb(&toc);

+	if(eflag != nil)

+		dumpencode(&toc);

+	else

+		dumpcddb(&toc);

 	exits(nil);

 }