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))
50 enum strncpy_behaviour
{
51 k_strncpy_always_add_null
= 0,
52 k_strncpy_allow_cutoff
= 1,
53 k_strncpy_overflow_fatal
= 2
56 VG_STATIC
void vg_fatal_error( const char *fmt
, ... );
57 VG_STATIC u32
vg_strncpy( const char *src
, char *dst
, u32 len
,
58 enum strncpy_behaviour behaviour
)
60 for( u32 i
=0; i
<len
; i
++ ){
63 if( !src
[i
] ) return i
;
66 if( behaviour
== k_strncpy_always_add_null
){
70 else if( behaviour
== k_strncpy_overflow_fatal
){
71 vg_fatal_error( "Strncpy dest exceeded buffer length\n" );
79 typedef struct vg_str vg_str
;
85 VG_STATIC
void vg_strnull( vg_str
*str
, char *buffer
, u32 len
)
92 VG_STATIC
void vg_strcat( vg_str
*str
, const char *append
)
94 for( u32 i
=0; str
->i
< str
->len
; i
++, str
->i
++ ){
95 str
->buffer
[ str
->i
] = append
[i
];
97 if( append
[i
] == '\0' ) return;
101 VG_STATIC
int vg_strgood( vg_str
*str
)
103 if( str
->i
== str
->len
){
104 if( str
->buffer
[str
->i
-1] == '\0' ) return 1;
110 VG_STATIC
char *vg_strch( vg_str
*str
, char c
)
113 for( u32 i
=0; i
<str
->i
; i
++ ){
114 if( str
->buffer
[i
] == c
)
121 VG_STATIC u32
vg_strdjb2( const char *str
)
125 while( (c
= *str
++) )
126 hash
= ((hash
<< 5) + hash
) + c
; /* hash * 33 + c */
131 #define VG_MIN( A, B ) ((A)<(B)?(A):(B))
132 #define VG_MAX( A, B ) ((A)>(B)?(A):(B))