/* * This file is part of the coreboot project. * * Copyright (C) 2009 coresystems GmbH * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; version 2 of * the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, * MA 02110-1301 USA */ #include <string.h> #include <console/vtxprintf.h> #include <trace.h> struct vsnprintf_context { char *str_buf; size_t buf_limit; }; static void str_tx_byte(unsigned char byte, void *data) { struct vsnprintf_context *ctx = data; if (ctx->buf_limit) { *ctx->str_buf = byte; ctx->str_buf++; ctx->buf_limit--; } } static int vsnprintf(char *buf, size_t size, const char *fmt, va_list args) { int i; struct vsnprintf_context ctx; DISABLE_TRACE; ctx.str_buf = buf; ctx.buf_limit = size ? size - 1 : 0; i = vtxdprintf(str_tx_byte, fmt, args, &ctx); if (size) *ctx.str_buf = '\0'; ENABLE_TRACE; return i; } int snprintf(char *buf, size_t size, const char *fmt, ...) { va_list args; int i; va_start(args, fmt); i = vsnprintf(buf, size, fmt, args); va_end(args); return i; }