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/*
* wm2xmcd - Workman-to-Xmcd CD database file converter
*
* Usage: wm2xmcd [-d outdir] [-c] [-vn] dbfile ...
*
* Copyright (C) 1993-2000 Ti Kan
* E-mail: ti@amb.org
*
* Note: Workman is a CD audio player utility for the XView/Open Look
* environment, written by Steve Grimm. All inquiries about
* Workman should be directed to koreth@hyperion.com
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifndef LINT
static char *_wm2xmcd_c_ident_ = "@(#)wm2xmcd.c 6.24 00/01/12";
#endif
#include <sys/types.h>
#ifndef NO_STDLIB_H
#include <stdlib.h>
#endif
#ifndef NO_UNISTD_H
#include <unistd.h>
#endif
#include <stdio.h>
#include <ctype.h>
#include <errno.h>
#include <sys/stat.h>
#include "common_d/patchlevel.h"
#ifdef BSDCOMPAT
#include <strings.h>
#ifndef strchr
#define strchr index
#endif
#ifndef strrchr
#define strrchr rindex
#endif
#else
#include <string.h>
#endif
#ifdef DEBUG
#define STATIC
#else
#define STATIC static
#endif
/* In case the OS does not define these... */
#ifndef S_ISDIR
#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
#endif
#define CDDBDIR "cddb"
#define BUF_LEN 2048
#define STR_BUF_SZ 64
#define MAXTRACK 100
#define FRAME_PER_SEC 75
#define MIN(a,b) ((a) > (b) ? (b) : (a))
typedef struct {
char *name;
unsigned long addr;
unsigned char min;
unsigned char sec;
unsigned char frame;
char reserved;
} trk_t;
extern int getopt();
extern int optind;
extern char *optarg;
STATIC int verbose,
categorize;
STATIC char buf[BUF_LEN],
cdname[128],
artist[128],
sav_artist[128],
sav_title[128],
*cddbdir = CDDBDIR;
STATIC trk_t trk[MAXTRACK];
STATIC struct stat stbuf;
/*
* usage
* Print usage help information
*
* Args:
* None.
*
* Return:
* Nothing.
*/
STATIC void
usage(void)
{
fprintf(stderr, "Usage: wm2xmcd [-d outdir] [-c] [-vn] dbfile ...\n");
}
/*
* prg_sum
* Convert an integer to its text string representation, and
* compute its checksum. Used by get_discid to derive the
* disc ID.
*
* Args:
* n - The integer value.
*
* Return:
* The integer checksum.
*/
STATIC int
prg_sum(int n)
{
int ret;
/* For backward compatibility this algorithm must not change */
for (ret = 0; n > 0; n /= 10)
ret += n % 10;
return (ret);
}
/*
* get_discid
* Compute a magic disc ID based on the number of tracks,
* the length of each track, and a checksum of the string
* that represents the offset of each track.
*
* Args:
* s - Pointer to the curstat_t structure.
*
* Return:
* The integer disc ID.
*/
STATIC unsigned int
get_discid(int ntrks)
{
int i,
t = 0,
n = 0;
/* For backward compatibility this algorithm must not change */
for (i = 0; i < ntrks; i++)
n += prg_sum((trk[i].min * 60) + trk[i].sec);
t = ((trk[ntrks].min * 60) + trk[ntrks].sec) -
((trk[0].min * 60) + trk[0].sec);
return ((n % 0xff) << 24 | t << 8 | ntrks);
}
/*
* skip_whitespace
* Given a character string, return a pointer to the position
* where the first whitespace (space or tab) occurs. No end-of-string
* checking is performed.
*
* Args:
* str - The input string
*
* Return:
* Pointer to the next whitespace in str. NULL is returned if the
* input string is NULL.
*/
STATIC char *
skip_whitespace(char *str)
{
if (str == NULL)
return NULL;
while (*str == ' ' || *str == '\t')
str++;
return (str);
}
/*
* next_slash_slash
* Given a character string, return a pointer to the position
* where the first occurrance of two slash characters appear.
* If the end-of-string is reached and no "//" is found, NULL
* is returned.
*
* Args:
* str - The input string
*
* Return:
* Pointer to the first "//" in the input string, or NULL
* if no "//" found. NULL is also returned if the input string
* is NULL.
*/
STATIC char *
next_slash_slash(char *str)
{
if (str == NULL)
return NULL;
while (*str != '\0') {
if (*str == '/' && *(str+1) == '/')
return (str);
str++;
}
return NULL;
}
/*
* mystrcat
* String concatenation routine with special handling for the "//"
* pattern.
*
* Args:
* s1 - Input string 1 and destination string buffer
* s2 - Input string 2
*
* Return:
* Pointer to the destination string buffer
*/
STATIC char *
mystrcat(char *s1, char *s2)
{
char *p;
if (s1 == NULL || s2 == NULL)
return NULL;
/* This code is takes a simplistic approach to handling '//'
* tokens. It does not conform strictly to the complex
* semantics of '//' as defined by the workmandb docs, but
* yields acceptable output for the most part.
*/
while ((p = next_slash_slash(s2)) != NULL) {
if (p != s2) {
*p = '\0';
(void) strcat(s1, s2);
if (s1[strlen(s1)-1] != '-')
(void) strcat(s1, " ");
*p = '/';
}
s2 = p + 2;
}
(void) strcat(s1, s2);
return (s1);
}
/*
* xlate_trktitle
* Workman-to-Xmcd track title format translation routine.
*
* Args:
* trkno - The track number
* str - The input string
* aux_artist - flag to indicate artist name handling
* aux_title - flag to indicate track title handling
* lev - recursion level
*
* Return:
* Nothing.
*/
STATIC void
xlate_trktitle(int trkno, char *str, int aux_artist, int aux_title, int lev)
{
char tmpbuf[512],
*p;
int i;
if (trkno < 0 || str == NULL)
/* Paranoia */
return;
p = str + strlen(str) - 1;
if (*p == '\n')
/* Eat newline */
*p = '\0';
if (verbose > 2) {
if (trkno == 0 && lev == 0)
fprintf(stderr,
"-----------------------------------\n");
fprintf(stderr, "DBG ");
for (i = 0; i < (lev * 2); i++)
(void) putchar(' ');
fprintf(stderr, "trk=%d str=%s\n", trkno, str);
}
if (str[0] == '@') {
if (isalpha(str[1])) {
if ((p = next_slash_slash(&str[1])) != NULL) {
*p = '\0';
(void) strcpy(sav_artist, &str[1]);
*p = '/';
p += 2;
}
else {
(void) strcpy(sav_artist, &str[1]);
p = "";
}
}
else if ((p = next_slash_slash(&str[1])) != NULL)
p += 2;
else
p = "";
xlate_trktitle(trkno, p, ++aux_artist, aux_title, ++lev);
return;
}
if (str[0] == '+') {
if (isalpha(str[1])) {
p = next_slash_slash(&str[1]) + 2;
if ((p = next_slash_slash(&str[1])) != NULL) {
*p = '\0';
(void) strcpy(sav_title, &str[1]);
*p = '/';
p += 2;
}
else {
(void) strcpy(sav_title, &str[1]);
p = "";
}
}
else if ((p = next_slash_slash(&str[1])) != NULL)
p += 2;
else
p = "";
xlate_trktitle(trkno, p, aux_artist, ++aux_title, ++lev);
return;
}
tmpbuf[0] = '\0';
if (aux_artist && strcmp(sav_artist, artist) != 0)
(void) sprintf(tmpbuf, "%s%s / ", tmpbuf, sav_artist);
if (aux_title) {
if (*str == '\0')
(void) strcat(tmpbuf, sav_title);
else
(void) sprintf(tmpbuf, "%s%s: ", tmpbuf, sav_title);
}
if (*str != '\0')
(void) mystrcat(tmpbuf, str);
trk[trkno].name = (char *) malloc(strlen(tmpbuf) + 1);
if (trk[trkno].name == NULL) {
fprintf(stderr, "Out of memory.\n");
exit(4);
}
(void) strcpy(trk[trkno].name, tmpbuf);
}
/*
* put_dbentry
* Write a database field to the xmcd CD database file.
*
* Args:
* fp - Output file stream
* idstr - Field identifier string
* entry - The data string
*
* Return:
* Nothing.
*/
STATIC void
put_dbentry(FILE *fp, char *idstr, char *entry)
{
int i,
n;
char *cp;
if (fp == NULL || idstr == NULL)
/* Paranoia */
return;
if (entry == NULL)
/* Null entry */
fprintf(fp, "%s=\n", idstr);
else {
/* Write entry to file, splitting into multiple lines
* if necessary. Special handling for newline and tab
* characters.
*/
cp = entry;
do {
fprintf(fp, "%s=", idstr);
n = MIN((int) strlen(cp), STR_BUF_SZ);
for (i = 0; i < n; i++, cp++) {
switch (*cp) {
case '\n':
fprintf(fp, "\\n");
break;
case '\t':
fprintf(fp, "\\t");
break;
case '\\':
fprintf(fp, "\\\\");
break;
default:
fprintf(fp, "%c", *cp);
break;
}
}
fprintf(fp, "\n");
if (*cp == '\0')
break;
} while (n == STR_BUF_SZ);
}
}
/*
* get_categ
* Prompt the user to enter a category name for a given CD,
* and make the appropriate directory if necessary.
*
* Args:
* dtitle - Disc title string
*
* Return:
* Pointer to the category string
*/
STATIC char *
get_categ(char *dtitle)
{
char path[128];
static char categ[128];
for (;;) {
fprintf(stdout, "\nDisc title: %s\nEnter category name: ",
dtitle);
if (fgets(categ, sizeof(categ), stdin) == NULL)
exit(0);
categ[strlen(categ)-1] = '\0';
(void) sprintf(path, "%s/%s", cddbdir, categ);
if (stat(path, &stbuf) < 0 && errno == ENOENT) {
if (mkdir(path, 0777) < 0)
fprintf(stderr,
"ERROR: Cannot make directory %s\n",
path);
else
break;
}
if (!S_ISDIR(stbuf.st_mode))
fprintf(stderr, "%s is not a directory.\n", path);
else
break;
}
return (categ);
}
/*
* newdb
* High level function to create a new xmcd CD database file for
* the disc being processed.
*
* Args:
* cdname - Disc title string
* artist - Disc artist string
* ntrks - The number of tracks on this disc
*
* Return:
* Nothing.
*/
STATIC void
newdb(char *cdname, char *artist, int ntrks)
{
FILE *fo;
char *categ = NULL,
discid[9],
outfile[128],
tmpstr[128];
int i;
(void) sprintf(discid, "%08x", get_discid(ntrks));
if (categorize) {
(void) sprintf(tmpstr, "%s / %s", artist, cdname);
categ = get_categ(tmpstr);
(void) sprintf(outfile, "%s/%s/%s", cddbdir, categ, discid);
}
else
(void) sprintf(outfile, "%s/%s", cddbdir, discid);
errno = 0;
if (stat(outfile, &stbuf) < 0 && errno != ENOENT) {
fprintf(stderr, "ERROR: Cannot stat %s (errno=%d)\n",
outfile, errno);
return;
}
else if (errno != ENOENT) {
switch (stbuf.st_mode & S_IFMT) {
case S_IFREG:
fprintf(stdout, "%s already exists. Remove? [yn] ",
outfile);
if (fgets(tmpstr, 3, stdin) == NULL)
exit(5);
if (tmpstr[0] == 'y' || tmpstr[0] == 'Y') {
if (unlink(outfile) < 0) {
fprintf(stderr,
"ERROR: Cannot unlink %s (errno=%d)\n",
outfile, errno);
return;
}
}
else {
fprintf(stderr, "ERROR: %s not saved.\n",
outfile);
return;
}
break;
default:
fprintf(stderr, "ERROR: %s is not a regular file.",
outfile);
return;
}
}
if (verbose > 1)
fprintf(stderr, "discid=%s, categ=%s\n",
discid, categorize ? categ : "(none)");
if ((fo = fopen(outfile, "w")) == NULL) {
fprintf(stderr, "ERROR: Cannot open %s for writing.\n",
outfile);
return;
}
fprintf(fo, "# xmcd CD database file\n# %s\n#\n", COPYRIGHT);
fprintf(fo, "# Track frame offsets:\n");
for (i = 0; i < ntrks; i++)
fprintf(fo, "#\t%lu\n", trk[i].addr);
fprintf(fo, "#\n# Disc length: %lu seconds\n#\n",
trk[ntrks].addr / FRAME_PER_SEC);
fprintf(fo, "#\n# Revision: 1\n# Submitted via: wm2xmcd %s%s PL%d\n#\n",
VERSION, VERSION_EXT, PATCHLEVEL);
fprintf(fo, "DISCID=%s\n", discid);
(void) sprintf(tmpstr, "%s / %s", artist, cdname);
put_dbentry(fo, "DTITLE", tmpstr);
for (i = 0; i < ntrks; i++) {
(void) sprintf(tmpstr, "TTITLE%u", i);
put_dbentry(fo, tmpstr, trk[i].name);
}
put_dbentry(fo, "EXTD", NULL);
for (i = 0; i < ntrks; i++) {
(void) sprintf(tmpstr, "EXTT%u", i);
put_dbentry(fo, tmpstr, NULL);
}
put_dbentry(fo, "PLAYORDER", NULL);
(void) fclose(fo);
}
/*
* do_conv
* High level function to convert a Workman database file into
* Xmcd database files. Interprets Workman file keywords and
* perform appropriate translations.
*
* Args:
* fp - The Workman database input file stream
*
* Return:
* Nothing.
*/
STATIC void
do_conv(FILE *fp)
{
char *p;
int i,
ntrks,
trkno = -1,
num;
while (fgets(buf, sizeof(buf), fp) != NULL) {
/* Comment */
if (buf[0] == '#' || buf[0] == '\n')
continue;
/* tracks */
if (strncmp(buf, "tracks", 6) == 0) {
trkno = 0;
p = skip_whitespace(buf + 6);
if (sscanf(p, "%d ", &ntrks) < 0) {
/* File format error */
trkno = -1;
continue;
}
p = strchr(p, ' ');
for (i = 0; i < ntrks; i++) {
if (sscanf(p, " %d", &num) > 0) {
trk[i].addr = num;
trk[i].min =
(num / FRAME_PER_SEC) / 60;
trk[i].sec =
(num / FRAME_PER_SEC) % 60;
trk[i].frame = num % FRAME_PER_SEC;
p = strchr(p+1, ' ');
}
else {
trkno = -1;
break;
}
}
if (trkno < 0)
continue;
num = 0;
if (sscanf(p, " %d", &num) > 0) {
trk[i].addr = num * FRAME_PER_SEC;
trk[i].min = num / 60;
trk[i].sec = num % 60;
trk[i].frame = 0;
}
if (num == 0)
trkno = -1;
cdname[0] = artist[0] = '\0';
sav_artist[0] = sav_title[0] = '\0';
continue;
}
/* cdname */
if (trkno >= 0 && strncmp(buf, "cdname", 6) == 0) {
(void) strcpy(cdname, skip_whitespace(buf + 6));
cdname[strlen(cdname)-1] = '\0';
continue;
}
/* artist */
if (trkno >= 0 && strncmp(buf, "artist", 6) == 0) {
(void) strcpy(artist, skip_whitespace(buf + 6));
artist[strlen(artist)-1] = '\0';
continue;
}
/* track */
if (trkno >= 0 && strncmp(buf, "track", 5) == 0) {
xlate_trktitle(trkno, skip_whitespace(buf + 5),
0, 0, 0);
if (trkno >= ntrks - 1 &&
artist[0] != '\0' &&
cdname[0] != '\0') {
if (verbose > 1) {
fprintf(stderr, "%s\n",
"-----------------------------------");
}
newdb(cdname, artist, ntrks);
if (verbose)
fprintf(stderr, "%s / %s\n",
artist, cdname);
for (i = 0; i < ntrks; i++) {
if (verbose > 1) {
fprintf(stderr,
"%02u %02u:%02u %s\n",
i,
trk[i].min,
trk[i].sec,
trk[i].name);
}
if (trk[i].name != NULL) {
free(trk[i].name);
trk[i].name = NULL;
}
}
}
trkno++;
continue;
}
/* The following keywords are ignored. They are
* irrelevant in the scope of converting to an xmcd
* cddb file.
*
* whendone
* playnew
* sections
* playmode
* autoplay
* cdvolume
* playlist
* continue
* dontplay
* volume
* mark
*/
}
}
/*
* main
* The main function
*/
int
main(int argc, char **argv)
{
FILE *fp;
int i,
c;
while ((c = getopt(argc, argv, "cd:v:")) != EOF) {
switch (c) {
case 'd':
cddbdir = optarg;
break;
case 'c':
categorize = 1;
break;
case 'v':
verbose = atoi(optarg);
break;
case '?':
usage();
exit(1);
default:
fprintf(stderr, "%s: invalid option -%c\n",
argv[0], c);
usage();
exit(1);
}
}
if (optind == argc) {
usage();
exit(1);
}
/* Make output directory */
if (mkdir(cddbdir, 0777) < 0 && errno != EEXIST) {
fprintf(stderr, "ERROR: Cannot make output directory %s\n",
cddbdir);
exit(2);
}
/* Initialize */
for (i = 0; i < MAXTRACK; i++)
trk[i].name = NULL;
/* Process each input file */
for (i = optind; i < argc; i++) {
if ((fp = fopen(argv[i], "r")) == NULL) {
fprintf(stderr, "%s: Cannot open %s\n",
argv[0], argv[i]);
exit(3);
}
do_conv(fp);
(void) fclose(fp);
}
exit(0);
/*NOTREACHED*/
}
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