#ifndef VG_PLATFORM_H
#define VG_PLATFORM_H
+#ifdef VG_RELEASE
+ #define VG_STATIC static
+#else
+ #define VG_STATIC
+#endif
+
//#include "vg.h"
#include "vg_stdint.h"
const char *name;
};
-#ifndef VG_STATIC
-#define VG_STATIC static
-#endif
-
#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))
-VG_STATIC void vg_strncpy( const char *src, char *dst, u32 len )
-{
- for( u32 i=0; i<len; i++ )
- {
- dst[i] = src[i];
-
- if( !src[i] )
- break;
- }
-}
-
#include <stdio.h>
#include <dirent.h>
#include <string.h>
#include <math.h>
#include <assert.h>
+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 )
+{
+ 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;
+}
+
#define VG_MIN( A, B ) ((A)<(B)?(A):(B))
#define VG_MAX( A, B ) ((A)>(B)?(A):(B))
-
#endif