-enum strncpy_behaviour{
- k_strncpy_always_add_null = 0,
- k_strncpy_allow_cutoff = 1,
- k_strncpy_overflow_fatal = 2
-};
-
-VG_STATIC void vg_fatal_error( const char *fmt, ... );
-VG_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;
-struct vg_str{
- char *buffer;
- u32 i, len;
-};
-
-VG_STATIC void vg_strnull( vg_str *str, char *buffer, u32 len )
-{
- str->buffer = buffer;
- str->buffer[0] = '\0';
- str->i = 0;
- str->len = len;
-}
-
-VG_STATIC void vg_strcat( vg_str *str, const char *append )
-{
- if( !append ) return;
- for( u32 i=0; str->i < str->len; i++, str->i ++ ){
- str->buffer[ str->i ] = append[i];
-
- if( append[i] == '\0' ) return;
- }
-}
-
-VG_STATIC int vg_strgood( vg_str *str )
-{
- if( str->i == str->len ){
- if( str->buffer[str->i -1] == '\0' ) return 1;
- else return 0;
- }
- else return 1;
-}
-
-VG_STATIC char *vg_strch( vg_str *str, char c )
-{
- char *ptr = NULL;
- for( u32 i=0; i<str->i; i++ ){
- if( str->buffer[i] == c )
- ptr = str->buffer+i;
- }
-
- return ptr;
-}
-
-VG_STATIC u32 vg_strdjb2( const char *str )
-{
- u32 hash = 5381, c;
-
- while( (c = *str++) )
- hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
-
- return hash;
-}
-
-VG_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;
-}