1 #include "uint32.h"

     2 #include "fmt.h"

     3 #include "buffer.h"

     4 #include "strerr.h"

     5 

     6 #define FATAL "cdbdump: fatal: "

     7 

     8 void die_write(void)

     9 {

    10   strerr_die2sys(111,FATAL,"unable to write output: ");

    11 }

    12 void put(char *buf,unsigned int len)

    13 {

    14   if (buffer_put(buffer_1,buf,len) == -1) die_write();

    15 }

    16 void putflush(void)

    17 {

    18   if (buffer_flush(buffer_1) == -1) die_write();

    19 }

    20 

    21 uint32 pos = 0;

    22 

    23 void get(char *buf,unsigned int len)

    24 {

    25   int r;

    26   while (len > 0) {

    27     r = buffer_get(buffer_0,buf,len);

    28     if (r == -1)

    29       strerr_die2sys(111,FATAL,"unable to read input: ");

    30     if (r == 0)

    31       strerr_die2x(111,FATAL,"unable to read input: truncated file");

    32     pos += r;

    33     buf += r;

    34     len -= r;

    35   }

    36 }

    37 

    38 char buf[512];

    39 

    40 void copy(uint32 len)

    41 {

    42   unsigned int x;

    43 

    44   while (len) {

    45     x = sizeof buf;

    46     if (len < x) x = len;

    47     get(buf,x);

    48     put(buf,x);

    49     len -= x;

    50   }

    51 }

    52 

    53 void getnum(uint32 *num)

    54 {

    55   get(buf,4);

    56   uint32_unpack(buf,num);

    57 }

    58 

    59 char strnum[FMT_ULONG];

    60 

    61 main()

    62 {

    63   uint32 eod;

    64   uint32 klen;

    65   uint32 dlen;

    66 

    67   getnum(&eod);

    68   while (pos < 2048) getnum(&dlen);

    69 

    70   while (pos < eod) {

    71     getnum(&klen);

    72     getnum(&dlen);

    73     put("+",1); put(strnum,fmt_ulong(strnum,klen));

    74     put(",",1); put(strnum,fmt_ulong(strnum,dlen));

    75     put(":",1); copy(klen);

    76     put("->",2); copy(dlen);

    77     put("\n",1);

    78   }

    79 

    80   put("\n",1);

    81   putflush();

    82   _exit(0);

    83 }