X-Git-Url: https://harrygodden.com/git/?a=blobdiff_plain;f=vg_platform.h;h=e8b288e9731afd4034d922ff010a5ed3e4054700;hb=5cc37bf42297227603b045317af94952fff07bf3;hp=9366095cc702e3026a16c74efc38b8e30f9750b2;hpb=4bfaf318265027e52181b2447c7d9497d68d2b54;p=vg.git diff --git a/vg_platform.h b/vg_platform.h index 9366095..e8b288e 100644 --- a/vg_platform.h +++ b/vg_platform.h @@ -46,6 +46,8 @@ struct vg_achievement #include #include +#include "vg_string.h" + enum strncpy_behaviour{ k_strncpy_always_add_null = 0, k_strncpy_allow_cutoff = 1, @@ -75,181 +77,6 @@ static u32 vg_strncpy( const char *src, char *dst, u32 len, 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=n ) - break; - - temp[ n-1 - (i ++) ] = '0' + (value % 10); - value /= 10; - } - - for( ;ii == -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; ii; i++ ){ - if( str->buffer[i] == c ) - ptr = str->buffer+i; - } - - return ptr; -} - static u32 vg_strdjb2( const char *str ){ u32 hash = 5381, c;