libnjb: getfile.c

libnjb 2.2.6

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getfile.c
#include "common.h"
int progress(u_int64_t sent, u_int64_t total, const char* buf, unsigned len, void *data );
void usage(void);
int main (int argc, char **argv)
{
njb_t njbs[NJB_MAX_DEVICES], *njb;
int n, opt, debug;
u_int32_t id;
u_int64_t size;
extern int optind;
extern char *optarg;
char *endptr;
char *file;
debug= 0;
size= 0;
while ( (opt= getopt(argc, argv, "D:s:")) != -1 ) {
switch (opt) {
case 'D':
debug= atoi(optarg);
break;
case 's':
size= strtoul(optarg, &endptr, 10);
if ( *endptr != '\0' ) {
fprintf(stderr, "illegal size value %s\n",
optarg);
return 1;
}
break;
default:
usage();
return 1;
}
}
argc -= optind;
argv += optind;
if ( argc != 2 ) {
usage();
return 1;
}
id = strtoul(argv[0], &endptr, 10);
if ( *endptr != 0 ) {
fprintf(stderr, "illegal value %s\n", optarg);
return 1;
} else if ( ! id ) {
fprintf(stderr, "bad file id %u\n", id);
return 1;
}
file = argv[1];
if ( debug ) NJB_Set_Debug(debug);
if (NJB_Discover(njbs, 0, &n) == -1) {
fprintf(stderr, "could not locate any jukeboxes\n");
return 1;
}
if ( n == 0 ) {
fprintf(stderr, "no NJB devices found\n");
return 0;
}
njb = njbs;
if ( NJB_Open(njb) == -1 ) {
NJB_Error_Dump(njb, stderr);
return 1;
}
NJB_Capture(njb);
if ( ! size ) {
njb_datafile_t *df;
printf("Locating file %u\n", id);
NJB_Reset_Get_Datafile_Tag(njb);
while ( (df = NJB_Get_Datafile_Tag(njb)) ) {
if ( df->dfid == id ) {
size = df->filesize;
}
NJB_Datafile_Destroy(df);
}
/* Dump any pending errors */
NJB_Error_Dump(njb, stderr);
if ( size ) {
printf("%Lu bytes\n", size);
} else {
fprintf(stderr, "File %u not found\n", id);
}
}
if ( size ) {
if ( NJB_Get_File(njb, id, (u_int32_t) size, file, progress, NULL ) == -1 ) {
NJB_Error_Dump(njb, stderr);
}
printf("\n");
}
NJB_Release(njb);
NJB_Close(njb);
return 0;
}
int progress (u_int64_t sent, u_int64_t total, const char* buf, unsigned len, void *data)
{
int percent = (sent*100)/total;
#ifdef __WIN32__
printf("Progress: %I64u of %I64u (%d%%)\r", sent, total, percent);
#else
printf("Progress: %llu of %llu (%d%%)\r", sent, total, percent);
#endif
fflush(stdout);
return 0;
}
void usage (void)
{
fprintf(stderr, "getfile [ -s size ] <fileid> <filename>\n");
}