hxparse.cpp
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include "hlxclib/stdlib.h"
- //#include "hlxclib/stdio.h"
- #include "hlxclib/ctype.h"
- #include "hxtypes.h"
- #include "hxresult.h"
- #include "hxcom.h"
- #include "chxxtype.h"
- #include "hxwintyp.h"
- #include "hxstring.h"
- #include "hxstrutl.h"
- #include "hxparse.h"
- #include "hxheap.h"
- #ifdef _DEBUG
- #undef HX_THIS_FILE
- static const char HX_THIS_FILE[] = __FILE__;
- #endif
- /*
- * our smil/html color string table
- */
- static const struct smilColorTable
- {
- const char* m_pColorName;
- UINT8 m_ucRed;
- UINT8 m_ucGreen;
- UINT8 m_ucBlue;
- } SmilColorTable[] =
- {
- {"black", 0x00, 0x00, 0x00},
- {"silver", 0xc0, 0xc0, 0xc0},
- {"gray", 0x80, 0x80, 0x80},
- {"white", 0xff, 0xff, 0xff},
- {"maroon", 0x80, 0x00, 0x00},
- {"red", 0xff, 0x00, 0x00},
- {"purple", 0x80, 0x00, 0x80},
- {"fuchsia", 0xff, 0x00, 0xff},
- {"green", 0x00, 0x80, 0x00},
- {"lime", 0x00, 0xff, 0x00},
- {"olive", 0x80, 0x80, 0x00},
- {"yellow", 0xff, 0xff, 0x00},
- {"navy", 0x00, 0x00, 0x80},
- {"blue", 0x00, 0x00, 0xff},
- {"teal", 0x00, 0x80, 0x80},
- {"aqua", 0x00, 0xff, 0xff},
- {0, 0x00, 0x00, 0x00}
- };
- /****************************************************************************
- * getColorElement
- *
- * parses a hex value from the string passed in.
- */
- UINT8
- getColorElement(const char* pColorFrag, int len)
- {
- UINT8 ucValue = 0;
- char* pTmpBuf = new char[len+1];
- strncpy(pTmpBuf, pColorFrag, len); /* Flawfinder: ignore */
- pTmpBuf[len] = 0;
- ucValue = (UINT8)strtol(pTmpBuf, 0, 16);
- delete[] pTmpBuf;
- return ucValue;
- }
- /****************************************************************************
- * HXParseColor
- *
- * Parses a smil/html color string and returns its HXxColor value. The
- * string should be in one of the following formats: "#RGB", "#RRGGBB",
- * or one of the pre-defined strings in the table at the top of this file.
- */
- HX_RESULT
- HXParseColor(const char* pColorString, REF(HXxColor) theColor)
- {
- HX_RESULT theErr = HXR_INVALID_PARAMETER;
- theColor = 0;
- UINT8 ucRed = 0;
- UINT8 ucGreen = 0;
- UINT8 ucBlue = 0;
- if(pColorString[0] == '#')
- {
- if(strlen(pColorString) == 4)
- {
- /* #rgb, duplicate the numbers */
- char tmpBuf[6]; /* Flawfinder: ignore */
- tmpBuf[0] = tmpBuf[1] = pColorString[1];
- tmpBuf[2] = tmpBuf[3] = pColorString[2];
- tmpBuf[4] = tmpBuf[5] = pColorString[3];
- ucRed = getColorElement(&tmpBuf[0], 2);
- ucGreen = getColorElement(&tmpBuf[2], 2);
- ucBlue = getColorElement(&tmpBuf[4], 2);
- theErr = HXR_OK;
- }
- else if(strlen(pColorString) == 7)
- {
- /* #rrggbb */
- ucRed = getColorElement(&pColorString[1], 2);
- ucGreen = getColorElement(&pColorString[3], 2);
- ucBlue = getColorElement(&pColorString[5], 2);
- theErr = HXR_OK;
- }
- }
- else if (!strncmp(pColorString, "rgb(", 4))
- {
- // This color is in the form rgb(0,128,255) or
- // in the form rgb(0%,50%,100%)
- //
- // Make a copy of the string, since strtok
- // is destructive
- char* pCopy = new char [strlen(pColorString) + 1];
- if (pCopy)
- {
- strcpy(pCopy, pColorString); /* Flawfinder: ignore */
- // Get past the "rgb("
- UINT32 ulTmp = 0;
- char* pStr = strtok(pCopy, "(,)");
- // Get the red string
- pStr = strtok(NULL, "(,)");
- if (pStr)
- {
- // Use HXParseOpacity to parse the red component
- theErr = HXParseOpacity((const char*) pStr, ulTmp);
- if (SUCCEEDED(theErr))
- {
- // Assign the red component
- ucRed = (BYTE) ulTmp;
- // Get the green string
- pStr = strtok(NULL, "(,)");
- if (pStr)
- {
- // Use HXParseOpacity to parse the green component
- theErr = HXParseOpacity((const char*) pStr, ulTmp);
- if (SUCCEEDED(theErr))
- {
- // Assign the green component
- ucGreen = (BYTE) ulTmp;
- // Get the blue string
- pStr = strtok(NULL, "(,)");
- if (pStr)
- {
- // Use HXParseOpacity to parse the blue component
- theErr = HXParseOpacity((const char*) pStr, ulTmp);
- if (SUCCEEDED(theErr))
- {
- // Assign the blue string
- ucBlue = (BYTE) ulTmp;
- }
- }
- else
- {
- theErr = HXR_INVALID_PARAMETER;
- }
- }
- }
- else
- {
- theErr = HXR_INVALID_PARAMETER;
- }
- }
- }
- }
- HX_VECTOR_DELETE(pCopy);
- }
- else
- {
- // string, try to get it from the color table
- int i = 0;
- const char* pColorName = SmilColorTable[i].m_pColorName;
- while(pColorName)
- {
- if(strcmp(pColorName, pColorString) == 0)
- {
- ucRed = SmilColorTable[i].m_ucRed;
- ucBlue = SmilColorTable[i].m_ucBlue;
- ucGreen = SmilColorTable[i].m_ucGreen;
- theErr = HXR_OK;
- break;
- }
- pColorName = SmilColorTable[++i].m_pColorName;
- }
- }
- // Check and see if it's a system color definition.
- // See http://www.w3.org/TR/REC-CSS2/ui.html#system-colors
- // for more info about these.
- #ifdef _WINDOWS
- if (FAILED(theErr))
- {
- BOOL bMatch = FALSE;
- INT32 lIndex = 0;
- if (!strcasecmp(pColorString, "ActiveBorder"))
- {
- lIndex = COLOR_ACTIVEBORDER;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "ActiveCaption"))
- {
- lIndex = COLOR_ACTIVECAPTION;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "AppWorkspace"))
- {
- lIndex = COLOR_APPWORKSPACE;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "Background"))
- {
- lIndex = COLOR_BACKGROUND;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "ButtonFace"))
- {
- lIndex = COLOR_BTNFACE;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "ButtonHighlight"))
- {
- lIndex = COLOR_BTNHILIGHT;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "ButtonShadow"))
- {
- lIndex = COLOR_BTNSHADOW;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "ButtonText"))
- {
- lIndex = COLOR_BTNTEXT;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "CaptionText"))
- {
- lIndex = COLOR_CAPTIONTEXT;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "GrayText"))
- {
- lIndex = COLOR_GRAYTEXT;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "Highlight"))
- {
- lIndex = COLOR_HIGHLIGHT;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "HighlightText"))
- {
- lIndex = COLOR_HIGHLIGHTTEXT;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "InactiveBorder"))
- {
- lIndex = COLOR_INACTIVEBORDER;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "InactiveCaption"))
- {
- lIndex = COLOR_INACTIVECAPTION;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "InactiveCaptionText"))
- {
- lIndex = COLOR_INACTIVECAPTIONTEXT;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "InfoBackground"))
- {
- lIndex = COLOR_INFOBK;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "InfoText"))
- {
- lIndex = COLOR_INFOTEXT;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "Menu"))
- {
- lIndex = COLOR_MENU;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "MenuText"))
- {
- lIndex = COLOR_MENUTEXT;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "Scrollbar"))
- {
- lIndex = COLOR_SCROLLBAR;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "ThreeDDarkShadow"))
- {
- lIndex = COLOR_3DDKSHADOW;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "ThreeDFace"))
- {
- lIndex = COLOR_3DFACE;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "ThreeDHighlight"))
- {
- lIndex = COLOR_3DHILIGHT;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "ThreeDLightShadow"))
- {
- lIndex = COLOR_3DLIGHT;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "ThreeDShadow"))
- {
- lIndex = COLOR_3DSHADOW;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "Window"))
- {
- lIndex = COLOR_WINDOW;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "WindowFrame"))
- {
- lIndex = COLOR_WINDOWFRAME;
- bMatch = TRUE;
- }
- else if (!strcasecmp(pColorString, "WindowText"))
- {
- lIndex = COLOR_WINDOWTEXT;
- bMatch = TRUE;
- }
- if (bMatch)
- {
- UINT32 ulColor = GetSysColor(lIndex);
- ucRed = GetRValue(ulColor);
- ucGreen = GetGValue(ulColor);
- ucBlue = GetBValue(ulColor);
- theErr = HXR_OK;
- }
- }
- #endif
- #ifdef _WINDOWS
- theColor = (HXxColor)(RGB(ucRed, ucGreen, ucBlue));
- #else
- theColor = (HXxColor)
- (ucRed << 16 |
- ucGreen << 8 |
- ucBlue);
- #endif
- return theErr;
- }
- HX_RESULT
- HXParseDigit(const char* pDigitString, REF(INT32) ulOut)
- {
- // validate it first. ([whitespace][sign]digits)
- HX_RESULT ret = HXR_OK;
- const char* pBuf = pDigitString;
-
- // clear white space.
- while (*pBuf && isspace(*pBuf))
- {
- ++pBuf;
- }
- // check for sign
- if (*pBuf == '+' || *pBuf == '-')
- {
- ++pBuf;
- }
- // validate all else is a digit
- while (*pBuf)
- {
- if (!isdigit(*pBuf))
- {
- ret = HXR_FAIL;
- break;
- }
- ++pBuf;
- }
- // run the conversion anyway... just in case the user wants
- // to ignor the error.
- ulOut = atol(pDigitString);
- return ret;
- }
- HX_RESULT
- HXParseDouble(const char* pDoubleString, REF(double) dOut)
- {
- // validate it first.
- // ([whitespace][sign][digits][.digits][{d|D|e|E}[sign]digits])
- HX_RESULT ret = HXR_OK;
- const char* pBuf = pDoubleString;
- // clear white space.
- while (*pBuf && isspace(*pBuf))
- {
- ++pBuf;
- }
- // check for sign
- if (*pBuf == '+' || *pBuf == '-')
- {
- ++pBuf;
- }
- while (isdigit(*pBuf))
- {
- ++pBuf;
- }
- if (*pBuf == '.')
- {
- ++pBuf;
- }
- while (isdigit(*pBuf))
- {
- ++pBuf;
- }
- if (*pBuf == 'd' || *pBuf == 'D' || *pBuf == 'e' || *pBuf == 'E')
- {
- ++pBuf;
- if (*pBuf == '+' || *pBuf == '-')
- {
- ++pBuf;
- }
- while (isdigit(*pBuf))
- {
- ++pBuf;
- }
- }
-
- // we will allow whitespace at the end of the buffer,
- while (isspace(*pBuf))
- {
- ++pBuf;
- }
- // now if we are not at the NULL termination something is wrong with the
- // string.
- if (*pBuf != ' ')
- {
- ret = HXR_INVALID_PARAMETER;
- }
- // run the conversion anyway... The string might simply have junk at
- // the end of it, in which case the error *might* want to be ignored.
- dOut = atof(pDoubleString);
- return ret;
- }
- HX_RESULT HXParseColorUINT32(const char* pszStr, REF(UINT32) rulValue)
- {
- HX_RESULT retVal = HXR_OK;
- if (pszStr)
- {
- HXxColor cColor;
- retVal = HXParseColor(pszStr, cColor);
- if (SUCCEEDED(retVal))
- {
- rulValue = (UINT32) cColor;
- #if defined(_WINDOWS)
- // HXParseColor produces 0x00BBGGRR on Windows -
- // do the swap back to 0x00RRGGBB
- rulValue = ((rulValue & 0x00FF0000) >> 16) |
- (rulValue & 0x0000FF00) |
- ((rulValue & 0x000000FF) << 16);
- #endif
- }
- }
- else
- {
- retVal = HXR_FAIL;
- }
- return retVal;
- }
- HX_RESULT HXParsePercent(const char* pszStr, REF(double) rdValue)
- {
- HX_RESULT retVal = HXR_FAIL;
- if (pszStr)
- {
- char* pEndPtr = NULL;
- double dVal = strtod(pszStr, &pEndPtr);
- if (pEndPtr && *pEndPtr == '%')
- {
- rdValue = dVal;
- retVal = HXR_OK;
- }
- }
- return retVal;
- }
- HX_RESULT HXParseUINT32(const char* pszStr, REF(UINT32) rulValue)
- {
- HX_RESULT retVal = HXR_OK;
- if (pszStr)
- {
- INT32 lVal = 0;
- retVal = HXParseDigit(pszStr, lVal);
- if (SUCCEEDED(retVal))
- {
- if (lVal >= 0)
- {
- rulValue = (UINT32) lVal;
- }
- else
- {
- retVal = HXR_FAIL;
- }
- }
- }
- else
- {
- retVal = HXR_FAIL;
- }
- return retVal;
- }
- HX_RESULT HXParseOpacity(const char* pszStr, REF(UINT32) rulValue)
- {
- HX_RESULT retVal = HXR_OK;
- if (pszStr)
- {
- // First attempt to parse as a percent
- INT32 lValue = 0;
- double dPercent = 0.0;
- retVal = HXParsePercent(pszStr, dPercent);
- if (SUCCEEDED(retVal))
- {
- // Scale from 0-100% to 0-255 with rounding
- lValue = (INT32) (dPercent * 255.0 / 100.0 + 0.5);
- }
- else
- {
- // It wasn't a percent, so try and parse as digits
- retVal = HXParseDigit(pszStr, lValue);
- }
- if (SUCCEEDED(retVal))
- {
- // Clamp to 0-255
- if (lValue < 0) lValue = 0;
- if (lValue > 255) lValue = 255;
- // Assign the out parameter
- rulValue = (UINT32) lValue;
- }
- }
- else
- {
- retVal = HXR_FAIL;
- }
- return retVal;
- }