vg_log.h

   1 #ifndef VG_LOG_H
   2 #define VG_LOG_H
   3
   4 #include <stdarg.h>
   5 #include <string.h>
   6 #include <malloc.h>
   7 #include "vg_stdint.h"
   8 #include "vg_platform.h"
   9
  10 #define KNRM  "\x1B[0m"
  11 #define KRED  "\x1B[31m"
  12 #define KGRN  "\x1B[32m"
  13 #define KYEL  "\x1B[33m"
  14 #define KBLU  "\x1B[34m"
  15 #define KMAG  "\x1B[35m"
  16 #define KCYN  "\x1B[36m"
  17 #define KWHT  "\x1B[37m"
  18
  19 #ifdef VG_GAME
  20 static SDL_SpinLock log_print_sl;
  21 #endif
  22
  23 struct vg_log
  24 {
  25    char buffer[64][96];
  26    u32  buffer_line_count, buffer_line_current;
  27 }
  28 static vg_log;
  29
  30 void _vg_console_append_to_log( const char *str )
  31 {
  32    if( vg_log.buffer_line_count < vg_list_size( vg_log.buffer ) )
  33       vg_log.buffer_line_count ++;
  34
  35    char *dest = vg_log.buffer[ vg_log.buffer_line_current ++ ];
  36
  37    for( int i=0; i<vg_list_size( vg_log.buffer[0] ); i++ )
  38    {
  39       if( !str[i] || ( i == vg_list_size(vg_log.buffer[0])-1 ) )
  40       {
  41          dest[i] = '\0';
  42          break;
  43       }
  44
  45       dest[i] = str[i];
  46    }
  47
  48    if( vg_log.buffer_line_current >= vg_list_size( vg_log.buffer ) )
  49       vg_log.buffer_line_current = 0;
  50 }
  51
  52 VG_STATIC void _vg_log_write( FILE *file, const char *prefix,
  53                               const char *fmt, va_list args )
  54 {
  55 #ifdef VG_GAME
  56    SDL_AtomicLock( &log_print_sl );
  57 #endif
  58
  59         char buffer[ 4096 ];
  60         int i, j;
  61
  62         for( i=0; i<vg_list_size( buffer ); i ++ )
  63         {
  64                 if( prefix[i] )
  65                         buffer[i] = prefix[i];
  66                 else
  67                         break;
  68         }
  69
  70         j = i + vsnprintf( buffer + i, vg_list_size( buffer ) - i -12, fmt, args );
  71         strcpy( buffer + j, KNRM );
  72
  73         fputs( buffer, file );
  74
  75    _vg_console_append_to_log( buffer );
  76 #ifdef VG_GAME
  77    SDL_AtomicUnlock( &log_print_sl );
  78 #endif
  79 }
  80
  81 VG_STATIC void _vg_log_init(void)
  82 {
  83 }
  84
  85 #define VG_LOGX( NAME, PIPE, PFX )           \
  86 VG_STATIC void NAME(const char *fmt, ...)    \
  87 {                                            \
  88    va_list args;                             \
  89    va_start( args, fmt );                    \
  90    _vg_log_write( PIPE, (PFX), fmt, args );   \
  91    va_end( args );                           \
  92 }
  93
  94 VG_LOGX( vg_success, stdout, (KGRN "success" KWHT "| " KGRN) )
  95 VG_LOGX( vg_info,    stdout, (KNRM "   info" KWHT "| " KNRM) )
  96 VG_LOGX( vg_warn,    stdout, (KYEL "   warn" KWHT "| " KYEL) )
  97 VG_LOGX( vg_error,   stderr, (KRED "  error" KWHT "| " KRED) )
  98 VG_LOGX( vg_low,     stdout, (KWHT "    log" KWHT "| " KWHT) )
  99
 100 #endif /* VG_LOG_H */