X-Git-Url: https://harrygodden.com/git/?p=vg.git;a=blobdiff_plain;f=vg_platform.h;h=319f7a9abd1892e2fb4b8d03860484aa4c5725a0;hp=295f03f71703b24f081b638a5090340b32d3706d;hb=HEAD;hpb=545783c1d937b2bed42e0555c9343fa00b8b7a22

diff --git a/vg_platform.h b/vg_platform.h
index 295f03f..b846b06 100644
--- a/vg_platform.h
+++ b/vg_platform.h
@@ -1,13 +1,21 @@
-#ifndef VG_PLATFORM_H
-#define VG_PLATFORM_H
+#pragma once
 
-//#include "vg.h"
-#include "vg_stdint.h"
-
-/* Copyright (C) 2021-2022 Harry Godden (hgn) - All Rights Reserved */
+#include <stdlib.h>
+#include <stdint.h>
+
+typedef uint8_t  u8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+typedef uint64_t u64;
+typedef int8_t   i8;
+typedef int16_t  i16;
+typedef int32_t  i32;
+typedef int64_t  i64;
+typedef float    f32;
+typedef double   f64;
+typedef uint8_t  bool;
 
 typedef unsigned int uint;
-
 typedef int 		v2i[2];
 typedef int 		v3i[3];
 typedef int 		v4i[4];
@@ -20,258 +28,15 @@ typedef v3f			m4x3f[4];
 typedef v4f       m4x4f[4];
 typedef v3f			boxf[2];
 
-// Resource types
-typedef struct vg_tex2d vg_tex2d;
-
-struct vg_achievement
-{
-	int is_set;
-	const char *name;
-};
-
-#define vg_static_assert _Static_assert
-#define vg_list_size( A ) (sizeof(A)/sizeof(A[0]))
-#define VG_MUST_USE_RESULT __attribute__((warn_unused_result))
-
-#include <stdio.h>
-#include <string.h>
-#include <stdarg.h>
-#include <ctype.h>
-#include <math.h>
-#include <assert.h>
-#include <setjmp.h>
-#include <sys/time.h>
-#include <math.h>
-#include <stdio.h>
-#include <errno.h>
-#include <stdlib.h>
-
-enum strncpy_behaviour{
-   k_strncpy_always_add_null = 0,
-   k_strncpy_allow_cutoff = 1,
-   k_strncpy_overflow_fatal = 2
-};
-
-static void vg_fatal_error( const char *fmt, ... );
-static u32 vg_strncpy( const char *src, char *dst, u32 len,
-                          enum strncpy_behaviour behaviour )
-{
-   for( u32 i=0; i<len; i++ ){
-      dst[i] = src[i];
-
-      if( !src[i] ) return i;
-
-      if( i == len-1 ){
-         if( behaviour == k_strncpy_always_add_null ){
-            dst[i] = '\0';
-            return i;
-         }
-         else if( behaviour == k_strncpy_overflow_fatal ){
-            vg_fatal_error( "Strncpy dest exceeded buffer length\n" );
-         }
-      }
-   }
-
-   return 0;
-}
-
-typedef struct vg_str vg_str;
-typedef struct vg_str_dynamic vg_str_dynamic;
-
-struct vg_str{
-   char *buffer;
-   i32 i,   /* -1: error condition. otherwise, current cursor position */
-       len; /* -1: dynamically allocated. otherwise, buffer length */
-};
-
-struct vg_str_dynamic {
-   i32 len;
-};
-
-/* 
- * Returns the current storage size of the string
- */
-static i32 vg_str_storage( vg_str *str ){
-   if( str->len == -1 ){
-      if( str->buffer ){
-         vg_str_dynamic *arr = (vg_str_dynamic *)str->buffer;
-         return (arr-1)->len;
-      }
-      else return 0;
-   }
-   else return str->len;
-}
-
-/*
- * Reset string. If len is -1 (dynamically allocated), buffer must be either 
- * NULL or be acquired from malloc or realloc
- */
-static void vg_strnull( vg_str *str, char *buffer, i32 len ){
-   str->buffer = buffer;
-   if( buffer )
-      str->buffer[0] = '\0';
-
-   str->i = 0;
-   str->len = len;
-
-   assert(len);
-}
-
-static void vg_strfree( vg_str *str ){
-   if( str->len == -1 ){
-      if( str->buffer ){
-         vg_str_dynamic *arr = (vg_str_dynamic *)str->buffer;
-         free( arr-1 );
-
-         str->buffer = NULL;
-         str->i = 0;
-      }
-   }
-}
-
-/*
- * Double the size of the dynamically allocated string. If unallocated, alloc of
- * 16 bytes minimum.
- */
-static i32 vg_str_dynamic_grow( vg_str *str ){
-   if( str->buffer ){
-      vg_str_dynamic *hdr = ((vg_str_dynamic *)str->buffer) - 1;
-      i32 total = (hdr->len + sizeof(vg_str_dynamic)) * 2;
-      hdr = realloc( hdr, total );
-      hdr->len = total - sizeof(vg_str_dynamic);
-      str->buffer = (char *)(hdr+1);
-      return hdr->len;
-   }
-   else {
-      vg_str_dynamic *hdr = malloc(16);
-      hdr->len = 16-sizeof(vg_str_dynamic);
-      str->buffer = (char *)(hdr+1);
-      str->buffer[0] = '\0';
-      return hdr->len;
-   }
-}
-
-/*
- * Append null terminated string to vg_str 
- */
-static void vg_strcat( vg_str *str, const char *append ){
-   if( !append || (str->i == -1) ) return;
-
-   i32 max = vg_str_storage( str ),
-       i   = 0;
-
-append:
-   if( str->i == max ){
-      if( str->len == -1 )
-         max = vg_str_dynamic_grow( str );
-      else{
-         str->i = -1;
-         str->buffer[ max-1 ] = '\0';
-         return;
-      }
-   }
-
-   char c = append[ i ++ ];
-   str->buffer[ str->i ] = c;
-
-   if( c == '\0' )
-      return;
-
-   str->i ++;
-   goto append;
-}
-
-/* 
- * Append character to vg_str 
- */
-static void vg_strcatch( vg_str *str, char c ){
-   vg_strcat( str, (char[]){ c, '\0' } );
-}
-
-/* 
- * FIXME: Negative numbers
- */
-static void vg_strcati32( vg_str *str, i32 value ){
-   if( value ){
-      char temp[32];
-      int i=0;
-      while( value && (i<31) ){
-         temp[ i ++ ] = '0' + (value % 10);
-         value /= 10;
-      }
-
-      char reverse[32];
-      for( int j=0; j<i; j ++ )
-         reverse[j] = temp[ i-1-j ];
-      reverse[i] = '\0';
-
-      vg_strcat( str, reverse );
-   }
-   else
-      vg_strcat( str, "0" );
-}
-
-static void vg_strcati32r( vg_str *str, i32 value, i32 n, char alt ){
-   char temp[32];
-   i32 i=0;
-   while( value ){
-      if( i>=n ) 
-         break;
+/* anything compiled against VG shall implement this function somewhere. */
+void vg_fatal_error( const char *fmt, ... );
 
-      temp[ n-1 - (i ++) ] = '0' + (value % 10);
-      value /= 10;
+#define VG_ASSERT( ITEM, ... ) \
+   if( !( ITEM ) ) { \
+      vg_fatal_error( "Assertion failed: " VG_LOG_MCSTR(ITEM) "\n" \
+                      VG_LOG_WHERE ); \
    }
 
-   for( ;i<n; i ++ )
-      temp[ n-1 - i ] = alt;
-
-   temp[n]='\0';
-   vg_strcat( str, temp );
-}
-
-/*
- * Returns 1 if string did not overflow while building
- */
-static int vg_strgood( vg_str *str ){
-   if( str->i == -1 ) return 0;
-   else return 1;
-}
-
-/*
- * Returns pointer to first instance of character
- */
-static char *vg_strch( vg_str *str, char c ){
-   char *ptr = NULL;
-   for( i32 i=0; i<str->i; i++ ){
-      if( str->buffer[i] == c )
-         ptr = str->buffer+i;
-   }
-
-   return ptr;
-}
-
-static u32 vg_strdjb2( const char *str ){
-   u32 hash = 5381, c;
-
-   while( (c = *str++) )
-      hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
-
-   return hash;
-}
-
-static int vg_strdjb2_eq( const char *s1, u32 h1, 
-                             const char *s2, u32 h2 )
-{
-   if( h1 == h2 ){
-      if(!strcmp(s1, s2)) return 1;
-      else return 0;
-   } else return 0;
-}
-
-#define VG_STRDJB2_EQ( CS1, S2, H2 ) \
-   vg_strdjb2_eq( CS1, vg_strdjb2(CS1), S2, H2 )
-
-
 #define VG_MIN( A, B ) ((A)<(B)?(A):(B))
 #define VG_MAX( A, B ) ((A)>(B)?(A):(B))
-#endif
+#define vg_list_size( A ) (sizeof(A)/sizeof(A[0]))