src/msgdump.c

   1 // Copyright (C) 2021-2023 Harry Godden (hgn) - All Rights Reserved
   2
   3 #define VG_TOOLS
   4 #include "vg/vg.h"
   5 #include "vg/vg_msg.h"
   6
   7 #define CHUNK_SIZE 4096
   8
   9 int main( int argc, char *argv[] ){
  10    assert(argc);
  11
  12         if( argc < 2 ){
  13                 vg_error( "Usage: %s <file>\n", argv[0] );
  14                 return 0;
  15         }
  16
  17    for( int i=0; i<argc-1; i++ ){
  18       FILE *f = fopen( argv[i+1], "rb" );
  19       if( !f ){
  20          vg_error( "vg_disk_open_read: %s\n", strerror(errno) );
  21       }
  22
  23       void *buffer = NULL;
  24       u64 current = 0;
  25
  26       /* read in chunks */
  27       for( u32 i=0; 1; i++ ){
  28          buffer = realloc( buffer, current + CHUNK_SIZE );
  29          u64 l = fread( buffer + current, 1, CHUNK_SIZE, f );
  30          current += l;
  31
  32          if( l != CHUNK_SIZE ){
  33             if( feof( f ) ){
  34                break;
  35             }
  36             else{
  37                if( ferror( f ) ){
  38                   fclose(f);
  39                   vg_fatal_error( "read error" );
  40                }
  41                else{
  42                   fclose(f);
  43                   vg_fatal_error( "unknown error codition" );
  44                }
  45             }
  46          }
  47       }
  48
  49       fclose( f );
  50
  51       printf( "%s (%u bytes):", argv[i+1], (u32)current );
  52
  53       vg_msg msg;
  54       vg_msg_init( &msg, buffer, current );
  55       vg_msg_print( &msg, current );
  56
  57       free( buffer );
  58    }
  59 }