vg_platform.h

   1 #ifndef VG_PLATFORM_H
   2 #define VG_PLATFORM_H
   3
   4 #ifdef VG_RELEASE
   5  #define VG_STATIC static
   6 #else
   7  #define VG_STATIC
   8 #endif
   9
  10 //#include "vg.h"
  11 #include "vg_stdint.h"
  12
  13 /* Copyright (C) 2021-2022 Harry Godden (hgn) - All Rights Reserved */
  14
  15 typedef unsigned int uint;
  16
  17 typedef int             v2i[2];
  18 typedef int             v3i[3];
  19 typedef int             v4i[4];
  20 typedef float           v2f[2];
  21 typedef float           v3f[3];
  22 typedef float           v4f[4];
  23 typedef v2f                     m2x2f[2];
  24 typedef v3f                     m3x3f[3];
  25 typedef v3f                     m4x3f[4];
  26 typedef v4f       m4x4f[4];
  27 typedef v3f                     boxf[2];
  28
  29 // Resource types
  30 typedef struct vg_tex2d vg_tex2d;
  31
  32 struct vg_achievement
  33 {
  34         int is_set;
  35         const char *name;
  36 };
  37
  38 #define vg_static_assert _Static_assert
  39 #define vg_list_size( A ) (sizeof(A)/sizeof(A[0]))
  40 #define VG_MUST_USE_RESULT __attribute__((warn_unused_result))
  41
  42 enum strncpy_behaviour{
  43    k_strncpy_always_add_null = 0,
  44    k_strncpy_allow_cutoff = 1
  45 };
  46
  47 VG_STATIC u32 vg_strncpy( const char *src, char *dst, u32 len,
  48                           enum strncpy_behaviour behaviour )
  49 {
  50    for( u32 i=0; i<len; i++ ){
  51       dst[i] = src[i];
  52
  53       if( !src[i] ) return i;
  54
  55       if( (behaviour == k_strncpy_always_add_null) && (i == len-1) ){
  56          dst[i] = '\0';
  57          return i;
  58       }
  59    }
  60
  61    return 0;
  62 }
  63
  64 typedef struct vg_str vg_str;
  65 struct vg_str{
  66    char *buffer;
  67    u32 i, len;
  68 };
  69
  70 VG_STATIC void vg_strnull( vg_str *str, char *buffer, u32 len )
  71 {
  72    str->buffer = buffer;
  73    str->i = 0;
  74    str->len = len;
  75 }
  76
  77 VG_STATIC void vg_strcat( vg_str *str, const char *append )
  78 {
  79    for( u32 i=0; str->i < str->len; i++, str->i ++ ){
  80       str->buffer[ str->i ] = append[i];
  81
  82       if( append[i] == '\0' ) return;
  83    }
  84 }
  85
  86 VG_STATIC int vg_strgood( vg_str *str )
  87 {
  88    if( str->i == str->len ){
  89       if( str->buffer[str->i -1] == '\0' ) return 1;
  90       else return 0;
  91    }
  92    else{
  93       str->buffer[ str->i ++ ] = '\0';
  94       return 1;
  95    }
  96 }
  97
  98 VG_STATIC u32 vg_strdjb2( const char *str )
  99 {
 100    u32 hash = 5381, c;
 101
 102    while( (c = *str++) )
 103       hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
 104
 105    return hash;
 106 }
 107
 108 #include <stdio.h>
 109 #include <dirent.h>
 110 #include <string.h>
 111 #include <stdarg.h>
 112 #include <ctype.h>
 113 #include <math.h>
 114 #include <assert.h>
 115
 116 #define VG_MIN( A, B ) ((A)<(B)?(A):(B))
 117 #define VG_MAX( A, B ) ((A)>(B)?(A):(B))
 118 #endif