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hetmap.c
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hetmap.c
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/* HETMAP.C (c) Copyright Leland Lucius, 2000-2009 */
/* Displays information about a Hercules Emulated Tape */
/*
|| ----------------------------------------------------------------------------
||
|| HETMAP.C (c) Copyright Leland Lucius, 2000-2009
|| Released under terms of the Q Public License.
||
|| Displays information about the structure of a Hercules Emulated Tape.
||
|| ----------------------------------------------------------------------------
*/
#include "hstdinc.h"
#include "hercules.h"
#include "hetlib.h"
#include "sllib.h"
#include "herc_getopt.h"
/*
|| Local constant data
*/
static const char sep[] = "---------------------\n";
static const char help_hetmap[] =
"%s - Print a map of an HET or AWS tape file\n\n"
"Usage: %s [options] filename\n\n"
"Options:\n"
" -a print all label and file information (default: on)\n"
" -d print only dataset information (default: off)\n"
" -f print only file information (default: off)\n"
" -h display usage summary\n"
" -l print only label information (default: off)\n"
" -t print TAPEMAP-compatible format output (default: off)\n";
static const char help_tapemap[] =
"%s - Print a map of an HET or AWS tape file\n\n"
"Usage: %s filename\n\n";
#ifdef EXTERNALGUI
/* Previous reported file position */
static off_t prevpos = 0;
/* Report progress every this many bytes */
#define PROGRESS_MASK (~0x3FFFF /* 256K */)
#endif /*EXTERNALGUI*/
/*
|| Print terse dataset information (from VOL1/EOF1/EOF2)
*/
void
printdataset( char *buf, int len, int fileno )
{
SLLABEL lab;
SLFMT fmt;
char crtdt[ 9 ];
char expdt[ 9 ];
char recfm[ 4 ];
if( sl_islabel( &lab, buf, len ) == FALSE )
{
return;
}
sl_fmtlab( &fmt, &lab );
if( sl_isvol( buf, 1 ) )
{
printf( "vol=%-17.17s owner=%s\n\n",
fmt.slvol.volser,
fmt.slvol.owner);
}
else if( sl_iseof( buf, 1 ) )
{
printf( "seq=%-17d file#=%d\n",
atoi( fmt.slds1.dsseq ),
fileno );
printf( "dsn=%-17.17s crtdt=%-8.8s expdt=%-8.8s blocks=%d\n",
fmt.slds1.dsid,
sl_fmtdate( crtdt, fmt.slds1.crtdt, TRUE ),
sl_fmtdate( expdt, fmt.slds1.expdt, TRUE ),
atoi( fmt.slds1.blkhi ) * 1000000 + atoi( fmt.slds1.blklo ) );
}
else if( sl_iseof( buf, 2 ) )
{
recfm[ 0 ] = '\0';
strcat( strcat( strcat( recfm,
fmt.slds2.recfm ),
fmt.slds2.blkattr ),
fmt.slds2.ctrl );
printf( "job=%17.17s recfm=%-3.3s lrecl=%-5d blksize=%-5d\n\n",
fmt.slds2.jobid,
recfm,
atoi( fmt.slds2.lrecl ),
atoi( fmt.slds2.blksize ) );
}
return;
}
/*
|| Print all label fields
*/
void
printlabel( char *buf, int len )
{
SLLABEL lab;
SLFMT fmt;
int i;
if( sl_islabel( &lab, buf, len ) == FALSE )
{
return;
}
sl_fmtlab( &fmt, &lab );
printf( sep );
for( i = 0; fmt.key[ i ] != NULL; i++ )
{
printf("%-20.20s: '%s'\n", fmt.key[ i ] , fmt.val[ i ] );
}
return;
}
/*
|| Print label fields in TAPEMAP format
*/
void
printlabeltapemap( char *buf, int len )
{
SLLABEL lab;
BYTE labelrec[81];
int i;
if( sl_islabel( &lab, buf, len ) == FALSE )
{
return;
}
for (i=0; i < 80; i++)
{
labelrec[i] = guest_to_host(buf[i]);
}
labelrec[i] = '\0';
printf("%s\n", labelrec);
}
/*
|| Prints usage information
*/
void
usage( char *name )
{
if ((strcmp(name, "tapemap") == 0) || (strcmp(name, "TAPEMAP") == 0))
{
printf( help_tapemap, name, name );
}
else
{
printf( help_hetmap, name, name );
}
}
/*
|| Standard main
*/
int
main( int argc, char *argv[] )
{
char buf[ HETMAX_BLOCKSIZE ];
HETB *hetb;
int rc;
int fileno;
U32 blocks;
U32 uminsz;
U32 umaxsz;
U32 ubytes;
U32 cminsz;
U32 cmaxsz;
U32 cbytes;
U32 totblocks;
U32 totubytes;
U32 totcbytes;
U32 opts = 0;
char pgmpath[MAX_PATH];
char *pgm;
#define O_ALL 0xC0
#define O_FILES 0X80
#define O_LABELS 0X40
#define O_DATASETS 0X20
#define O_TAPEMAP_OUTPUT 0x10
#define O_TAPEMAP_INVOKED 0x08
/* Figure out processing based on the program name */
hostpath(pgmpath, argv[0], sizeof(pgmpath));
pgm = strrchr(pgmpath, '/');
if (pgm)
{
pgm++;
}
else
{
pgm = argv[0];
}
strtok (pgm, ".");
if ((strcmp(pgm, "tapemap") == 0) || (strcmp(pgm, "TAPEMAP") == 0))
{
opts = O_TAPEMAP_OUTPUT+O_TAPEMAP_INVOKED;
}
INITIALIZE_UTILITY(pgm);
/* Display the program identification message */
display_version (stderr, "Hercules HET and AWS tape map program ", FALSE);
if (! (opts & O_TAPEMAP_INVOKED) )
{
opts = O_ALL;
while( TRUE )
{
rc = getopt( argc, argv, "adfhlt" );
if( rc == -1 )
{
break;
}
switch( rc )
{
case 'a':
opts = O_ALL;
break;
case 'd':
opts = O_DATASETS;
break;
case 'f':
opts = O_FILES;
break;
case 'h':
usage( pgm );
exit( 1 );
break;
case 'l':
opts = O_LABELS;
break;
case 't':
opts = O_TAPEMAP_OUTPUT;
break;
default:
usage( pgm );
exit( 1 );
break;
}
}
} // end if (! (opts & O_TAPEMAP_INVOKED) )
argc -= optind;
if( argc != 1 )
{
usage( pgm );
exit( 1 );
}
if( opts & O_ALL )
{
printf( sep );
printf( "%-20.20s: %s\n", "Filename", argv[ optind ] );
}
rc = het_open( &hetb, argv[ optind ], 0 );
if( rc < 0 )
{
printf( "het_open() returned %d\n", rc );
het_close( &hetb );
exit( 1 );
}
fileno = 0;
blocks = 0;
uminsz = 0;
umaxsz = 0;
ubytes = 0;
cminsz = 0;
cmaxsz = 0;
cbytes = 0;
totblocks = 0;
totubytes = 0;
totcbytes = 0;
while( TRUE )
{
#ifdef EXTERNALGUI
if( extgui )
{
/* Report progress every nnnK */
off_t curpos = ftell( hetb->fd );
if( ( curpos & PROGRESS_MASK ) != ( prevpos & PROGRESS_MASK ) )
{
prevpos = curpos;
fprintf( stderr, "IPOS=%" I64_FMT "d\n", (U64)curpos );
}
}
#endif /*EXTERNALGUI*/
rc = het_read( hetb, buf );
if( rc == HETE_EOT )
{
if( opts & O_TAPEMAP_OUTPUT )
{
printf ("End of tape.\n");
}
break;
}
if( rc == HETE_TAPEMARK )
{
fileno += 1;
if( opts & O_TAPEMAP_OUTPUT )
{
printf ("File %u: Blocks=%u, block size min=%u, max=%u\n",
fileno, blocks, uminsz, umaxsz );
}
if( opts & O_FILES )
{
printf( sep );
printf( "%-20.20s: %d\n", "File #", fileno );
printf( "%-20.20s: %d\n", "Blocks", blocks );
printf( "%-20.20s: %d\n", "Min Blocksize", uminsz );
printf( "%-20.20s: %d\n", "Max Blocksize", umaxsz );
printf( "%-20.20s: %d\n", "Uncompressed bytes", ubytes );
printf( "%-20.20s: %d\n", "Min Blocksize-Comp", cminsz );
printf( "%-20.20s: %d\n", "Max Blocksize-Comp", cmaxsz );
printf( "%-20.20s: %d\n", "Compressed bytes", cbytes );
}
totblocks += blocks;
totubytes += ubytes;
totcbytes += cbytes;
blocks = 0;
uminsz = 0;
umaxsz = 0;
ubytes = 0;
cminsz = 0;
cmaxsz = 0;
cbytes = 0;
continue;
}
if( rc < 0 )
{
printf( "het_read() returned %d\n", rc );
break;
}
blocks += 1;
ubytes += hetb->ublksize;
cbytes += hetb->cblksize;
if( uminsz == 0 || hetb->ublksize < uminsz ) uminsz = hetb->ublksize;
if( hetb->ublksize > umaxsz ) umaxsz = hetb->ublksize;
if( cminsz == 0 || hetb->cblksize < cminsz ) cminsz = hetb->cblksize;
if( hetb->cblksize > cmaxsz ) cmaxsz = hetb->cblksize;
if( opts & O_LABELS )
{
printlabel( buf, rc );
}
if( opts & O_TAPEMAP_OUTPUT )
{
printlabeltapemap( buf, rc );
}
if( opts & O_DATASETS )
{
printdataset( buf, rc, fileno );
}
}
if( opts & O_FILES )
{
printf( sep );
printf( "%-20.20s:\n", "Summary" );
printf( "%-20.20s: %d\n", "Files", fileno );
printf( "%-20.20s: %d\n", "Blocks", totblocks );
printf( "%-20.20s: %d\n", "Uncompressed bytes", totubytes );
printf( "%-20.20s: %d\n", "Compressed bytes", totcbytes );
printf( "%-20.20s: %d\n", "Reduction", totubytes - totcbytes );
}
het_close( &hetb );
return 0;
}