vg/vg_io.h

   1 // Copyright (C) 2021 Harry Godden (hgn) - All Rights Reserved
   2
   3 // Coloured logging
   4 // ===========================================================================================================
   5
   6 #define KNRM  "\x1B[0m"
   7 #define KRED  "\x1B[31m"
   8 #define KGRN  "\x1B[32m"
   9 #define KYEL  "\x1B[33m"
  10 #define KBLU  "\x1B[34m"
  11 #define KMAG  "\x1B[35m"
  12 #define KCYN  "\x1B[36m"
  13 #define KWHT  "\x1B[37m"
  14
  15 #define VG_LOG_WRITE( FILE, PREFIX )    \
  16         fprintf( FILE, PREFIX );                                \
  17         va_list args;                                                           \
  18         va_start( args, fmt );                                  \
  19         vfprintf( FILE, fmt, args );                    \
  20         va_end( args );                                                         \
  21         fprintf( FILE, KNRM );
  22
  23 void vg_success( const char *fmt, ... ) { VG_LOG_WRITE( stdout, (KGRN "success" KWHT "| " KGRN) ); }
  24 void vg_info( const char *fmt, ... )    { VG_LOG_WRITE( stdout, (KNRM "   info" KWHT "| " KNRM) ); }
  25 void vg_warn( const char *fmt, ... )    { VG_LOG_WRITE( stdout, (KYEL "   warn" KWHT "| " KYEL) ); }
  26 void vg_error( const char *fmt, ... )   { VG_LOG_WRITE( stderr, (KRED "  error" KWHT "| " KRED) ); }
  27
  28 // FILE IO
  29 // ===========================================================================================================
  30
  31 i64 vg_file_size( FILE *fileptr )
  32 {
  33         fseek( fileptr, 0, SEEK_END );
  34         i64 fsize = ftell( fileptr );
  35         fseek( fileptr, 0, SEEK_SET );
  36
  37         return fsize;
  38 }
  39
  40 void *vg_disk_open_read( const char *path, int const reserve_end, i64 *size )
  41 {
  42         FILE *f = fopen( path, "rb" );
  43         if( f )
  44         {
  45                 i64 fsize = vg_file_size( f );
  46                 void *buf = malloc( fsize + reserve_end );
  47
  48                 if( buf )
  49                 {
  50                         // Invalid / corrupt read
  51                         if( fread( buf, 1, fsize, f ) != fsize )
  52                         {
  53                                 free( buf );
  54                                 buf = NULL;
  55                         }
  56                 }
  57
  58                 *size = fsize;
  59
  60                 fclose( f );
  61                 return buf;
  62         }
  63         else
  64         {
  65                 return NULL;
  66         }
  67 }
  68
  69 char *vg_disk_load_text( const char *path, i64 *size )
  70 {
  71         char *buf;
  72         i64 fsize;
  73
  74         if( (buf = vg_disk_open_read( path, 1, &fsize )) )
  75         {
  76                 buf[ fsize ] = 0x00;
  77                 *size = fsize +1;
  78
  79                 return buf;
  80         }
  81
  82         return NULL;
  83 }
  84
  85 void *vg_asset_read_s( const char *path, i64 *size )
  86 {
  87         return vg_disk_open_read( path, 0, size );
  88 }
  89
  90 void *vg_asset_read( const char *path )
  91 {
  92         i64 size;
  93         return vg_disk_open_read( path, 0, &size );
  94 }
  95
  96 char *vg_textasset_read_s( const char *path, i64 *size )
  97 {
  98         return vg_disk_load_text( path, size );
  99 }
 100
 101 char *vg_textasset_read( const char *name )
 102 {
 103         i64 size;
 104         return vg_disk_load_text( name, &size );
 105 }