-#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];
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 last 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]))
projects / vg.git / blobdiff