mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-30 12:43:41 +01:00
135 lines
2.9 KiB
C
135 lines
2.9 KiB
C
/** @file
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Copyright (C) 2019, vit9696. All rights reserved.
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All rights reserved.
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/OcConsoleLib.h>
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#include <Library/OcGuardLib.h>
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/**
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Parse resolution string.
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@param[in] String Resolution in WxH@Bpp or WxH format.
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@param[out] Width Parsed width or 0.
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@param[out] Height Parsed height or 0.
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@param[out] Bpp Parsed Bpp or 0, optional to force WxH format.
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@param[out] Max Set to TRUE when String equals to Max.
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**/
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STATIC
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VOID
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ParseResolution (
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IN CONST CHAR8 *String,
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OUT UINT32 *Width,
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OUT UINT32 *Height,
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OUT UINT32 *Bpp OPTIONAL,
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OUT BOOLEAN *Max
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)
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{
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UINT32 TmpWidth;
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UINT32 TmpHeight;
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*Width = 0;
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*Height = 0;
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*Max = FALSE;
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if (Bpp != NULL) {
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*Bpp = 0;
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}
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if (AsciiStrCmp (String, "Max") == 0) {
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*Max = TRUE;
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return;
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}
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if (*String == '\0' || *String < '0' || *String > '9') {
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return;
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}
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TmpWidth = TmpHeight = 0;
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while (*String >= '0' && *String <= '9') {
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if (OcOverflowMulAddU32 (TmpWidth, 10, *String++ - '0', &TmpWidth)) {
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return;
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}
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}
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if (*String++ != 'x' || *String < '0' || *String > '9') {
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return;
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}
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while (*String >= '0' && *String <= '9') {
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if (OcOverflowMulAddU32 (TmpHeight, 10, *String++ - '0', &TmpHeight)) {
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return;
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}
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}
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if (*String != '\0' && (*String != '@' || Bpp == NULL)) {
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return;
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}
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*Width = TmpWidth;
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*Height = TmpHeight;
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if (*String == '\0') {
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return;
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}
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TmpWidth = 0;
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while (*String >= '0' && *String <= '9') {
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if (OcOverflowMulAddU32 (TmpWidth, 10, *String++ - '0', &TmpWidth)) {
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return;
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}
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}
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if (*String != '\0') {
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return;
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}
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*Bpp = TmpWidth;
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}
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VOID
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OcParseScreenResolution (
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IN CONST CHAR8 *String,
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OUT UINT32 *Width,
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OUT UINT32 *Height,
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OUT UINT32 *Bpp,
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OUT BOOLEAN *Max
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)
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{
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ASSERT (String != NULL);
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ASSERT (Width != NULL);
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ASSERT (Height != NULL);
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ASSERT (Bpp != NULL);
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ASSERT (Max != NULL);
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ParseResolution (String, Width, Height, Bpp, Max);
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}
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VOID
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OcParseConsoleMode (
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IN CONST CHAR8 *String,
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OUT UINT32 *Width,
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OUT UINT32 *Height,
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OUT BOOLEAN *Max
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)
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{
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ASSERT (String != NULL);
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ASSERT (Width != NULL);
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ASSERT (Height != NULL);
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ASSERT (Max != NULL);
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ParseResolution (String, Width, Height, NULL, Max);
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}
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