5 #define VG_STATIC static
11 #include "vg_stdint.h"
13 /* Copyright (C) 2021-2022 Harry Godden (hgn) - All Rights Reserved */
15 typedef unsigned int uint
;
30 typedef struct vg_tex2d vg_tex2d
;
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))
42 enum strncpy_behaviour
{
43 k_strncpy_always_add_null
= 0,
44 k_strncpy_allow_cutoff
= 1,
45 k_strncpy_overflow_fatal
= 2
48 VG_STATIC
void vg_fatal_error( const char *fmt
, ... );
49 VG_STATIC u32
vg_strncpy( const char *src
, char *dst
, u32 len
,
50 enum strncpy_behaviour behaviour
)
52 for( u32 i
=0; i
<len
; i
++ ){
55 if( !src
[i
] ) return i
;
58 if( behaviour
== k_strncpy_always_add_null
){
62 else if( behaviour
== k_strncpy_overflow_fatal
){
63 vg_fatal_error( "Strncpy dest exceeded buffer length\n" );
71 typedef struct vg_str vg_str
;
77 VG_STATIC
void vg_strnull( vg_str
*str
, char *buffer
, u32 len
)
84 VG_STATIC
void vg_strcat( vg_str
*str
, const char *append
)
86 for( u32 i
=0; str
->i
< str
->len
; i
++, str
->i
++ ){
87 str
->buffer
[ str
->i
] = append
[i
];
89 if( append
[i
] == '\0' ) return;
93 VG_STATIC
int vg_strgood( vg_str
*str
)
95 if( str
->i
== str
->len
){
96 if( str
->buffer
[str
->i
-1] == '\0' ) return 1;
100 str
->buffer
[ str
->i
++ ] = '\0';
105 VG_STATIC u32
vg_strdjb2( const char *str
)
109 while( (c
= *str
++) )
110 hash
= ((hash
<< 5) + hash
) + c
; /* hash * 33 + c */
123 #define VG_MIN( A, B ) ((A)<(B)?(A):(B))
124 #define VG_MAX( A, B ) ((A)>(B)?(A):(B))