| /* |
| * 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; |
| } |