83 	int buf_off;  member
122 	ctx->buf_off=0;  in b64_new()
161 		ctx->buf_off=0;  in b64_read()
169 		OPENSSL_assert(ctx->buf_len >= ctx->buf_off);  in b64_read()
170 		i=ctx->buf_len-ctx->buf_off;  in b64_read()
172 		OPENSSL_assert(ctx->buf_off+i < (int)sizeof(ctx->buf));  in b64_read()
173 		memcpy(out,&(ctx->buf[ctx->buf_off]),i);  in b64_read()
177 		ctx->buf_off+=i;  in b64_read()
178 		if (ctx->buf_len == ctx->buf_off)  in b64_read()
181 			ctx->buf_off=0;  in b64_read()
344 		ctx->buf_off=0;  in b64_read()
359 		ctx->buf_off=i;  in b64_read()
360 		if (ctx->buf_off == ctx->buf_len)  in b64_read()
363 			ctx->buf_off=0;  in b64_read()
387 		ctx->buf_off=0;  in b64_write()
392 	OPENSSL_assert(ctx->buf_off < (int)sizeof(ctx->buf));  in b64_write()
394 	OPENSSL_assert(ctx->buf_len >= ctx->buf_off);  in b64_write()
395 	n=ctx->buf_len-ctx->buf_off;  in b64_write()
398 		i=BIO_write(b->next_bio,&(ctx->buf[ctx->buf_off]),n);  in b64_write()
405 		ctx->buf_off+=i;  in b64_write()
406 		OPENSSL_assert(ctx->buf_off <= (int)sizeof(ctx->buf));  in b64_write()
407 		OPENSSL_assert(ctx->buf_len >= ctx->buf_off);  in b64_write()
411 	ctx->buf_off=0;  in b64_write()
436 				OPENSSL_assert(ctx->buf_len >= ctx->buf_off);  in b64_write()
453 				OPENSSL_assert(ctx->buf_len >= ctx->buf_off);  in b64_write()
463 			OPENSSL_assert(ctx->buf_len >= ctx->buf_off);  in b64_write()
469 		ctx->buf_off=0;  in b64_write()
473 			i=BIO_write(b->next_bio,&(ctx->buf[ctx->buf_off]),n);  in b64_write()
481 			ctx->buf_off+=i;  in b64_write()
482 			OPENSSL_assert(ctx->buf_off <= (int)sizeof(ctx->buf));  in b64_write()
483 			OPENSSL_assert(ctx->buf_len >= ctx->buf_off);  in b64_write()
486 		ctx->buf_off=0;  in b64_write()
514 		OPENSSL_assert(ctx->buf_len >= ctx->buf_off);  in b64_ctrl()
515 		ret=ctx->buf_len-ctx->buf_off;  in b64_ctrl()
523 		OPENSSL_assert(ctx->buf_len >= ctx->buf_off);  in b64_ctrl()
524 		ret=ctx->buf_len-ctx->buf_off;  in b64_ctrl()
531 		while (ctx->buf_len != ctx->buf_off)  in b64_ctrl()
545 				ctx->buf_off=0;  in b64_ctrl()
552 			ctx->buf_off=0;  in b64_ctrl()