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Classic Shell

, 23 Feb 2010
Classic Start menu and other shell features for Windows 7 and Vista.
Prize winner in Competition "Windows 7 "Windows @ Work" Article Contest"
ClassicShellSetup.zip
ClassicShellSrc.zip
ClassicShell
ClassicExplorer
ClassicCopyExt.rgs
ClassicExplorer.rgs
ClassicExplorer32.def
ClassicExplorer64.def
Explorer.ini
ExplorerBand.rgs
ExplorerBHO.rgs
ExplorerL10N.ini
up.ico
up2Disabled.ico
up2Hot.ico
up2Normal.ico
up2Pressed.ico
upDisabled.ico
ClassicShellSetup
ClassicShell.ico
ClassicShellBanner.jpg
ClassicShellSetup.manifest
ClassicShellSetup32
ClassicShellSetup32.vdproj
ClassicShellSetup64
ClassicShellSetup64.vdproj
ClassicStartMenu
ClassicStartMenu.manifest
ClassicStartMenuDLL
StartMenu.ini
StartMenuItems.ini
StartMenuL10N.ini
Docs
ClassicExplorer_files
after.png
before.png
ClassicShell.png
FolderView.gif
iconoffset.png
statusbar.png
titlebar.png
toolbar.png
ClassicShellEULA.rtf
ClassicShellReadme.rtf
ClassicStartMenu_files
ClassicShell.png
screenshot.png
skins.gif
ParseSettings
Skins
ClassicSkin
main_bitmap.bmp
selection.bmp
VistaAero
main_bitmap.bmp
selection.bmp
Win7Aero
main_bitmap.bmp
selection.bmp
Win7Basic
main_bitmap.bmp
selection.bmp
// Classic Shell (c) 2009-2010, Ivo Beltchev
// The sources for Classic Shell are distributed under the MIT open source license

#include "ParseSettings.h"

// Reads a file into m_Text
bool CSettingsParser::LoadText( const wchar_t *fname )
{
	// read settings file into buf
	FILE *f=NULL;
	if (_wfopen_s(&f,fname,L"rb")) return false;
	if (!f) return false;
	fseek(f,0,SEEK_END);
	int size=ftell(f);
	fseek(f,0,SEEK_SET);
	std::vector<unsigned char> buf(size);
	if (size<4 || fread(&buf[0],1,size,f)!=size)
	{
		fclose(f);
		return false;
	}
	fclose(f);
	LoadText(&buf[0],size);
	return true;
}

// Reads a text resource into m_Text
bool CSettingsParser::LoadText( HMODULE hMod, HRSRC hResInfo )
{
	HGLOBAL hRes=LoadResource(hMod,hResInfo);
	int size=SizeofResource(hMod,hResInfo);
	unsigned char *buf=(unsigned char*)LockResource(hRes);
	if (!buf) return false;
	LoadText(buf,size);
	return true;
}

void CSettingsParser::LoadText( const unsigned char *buf, int size )
{
	// copy buf to text and convert to UTF16
	if (buf[0]==0xFF && buf[1]==0xFE)
	{
		// UTF16
		int len=(size-2)/2;
		m_Text.resize(len+1);
		memcpy(&m_Text[0],&buf[2],size-2);
		m_Text[len]=0;
	}
	else if (buf[0]==0xEF && buf[1]==0xBB && buf[2]==0xBF)
	{
		// UTF8
		int len=MultiByteToWideChar(CP_UTF8,0,(const char*)&buf[3],size-3,NULL,0);
		m_Text.resize(len+1);
		MultiByteToWideChar(CP_UTF8,0,(const char*)&buf[3],size-3,&m_Text[0],len);
		m_Text[len]=0;
	}
	else
	{
		// ACP
		int len=MultiByteToWideChar(CP_ACP,0,(const char*)&buf[0],size,NULL,0);
		m_Text.resize(len+1);
		MultiByteToWideChar(CP_UTF8,0,(const char*)&buf[0],size,&m_Text[0],len);
		m_Text[len]=0;
	}
}

// Splits m_Text into m_Lines
void CSettingsParser::ParseText( void )
{
	// split into lines
	wchar_t *str=&m_Text[0];
	while (*str)
	{
		if (*str!=';') // ignore lines starting with ;
		{
			// trim leading whitespace
			while (*str==' ' || *str=='\t')
				str++;
			m_Lines.push_back(str);
		}
		wchar_t *p1=wcschr(str,'\r');
		wchar_t *p2=wcschr(str,'\n');
		wchar_t *end=&m_Text[m_Text.size()-1];
		if (p1) end=p1;
		if (p2 && p2<end) end=p2;

		wchar_t *next=end;
		while (*next=='\r' || *next=='\n')
			next++;

		// trim trailing whitespace
		while (end>str && (*end==' ' || *end=='\t'))
			end--;
		*end=0;
		str=next;
	}
}

// Filters the settings that belong to the given language
// lanugages is a 00-terminated list of language names ordered by priority
void CSettingsParser::FilterLanguages( const wchar_t *languages )
{
	std::vector<const wchar_t*> lines;
	lines.swap(m_Lines);
	for (const wchar_t *lang=languages;*lang;lang+=wcslen(lang)+1)
	{
		size_t langLen=wcslen(lang);
		for (size_t i=0;i<lines.size();i++)
		{
			const wchar_t *line=lines[i];
			if (*line=='[' && _wcsnicmp(line+1,lang,langLen)==0 && line[langLen+1]==']')
			{
				for (i++;i<lines.size();i++)
				{
					line=lines[i];
					if (*line=='[') break;
					m_Lines.push_back(line);
				}
				break;
			}
		}
	}
}

// Returns a setting with the given name. If no setting is found, returns def
const wchar_t *CSettingsParser::FindSetting( const char *name, const wchar_t *def )
{
	wchar_t wname[256];
	size_t len=MultiByteToWideChar(1252,0,name,-1,wname,_countof(wname)-1);
	if (len==0 || wname[len-1]!=0)
		return def;
	len--;

	const wchar_t *str=FindSetting(wname,len);
	return str?str:def;
}

const wchar_t *CSettingsParser::FindSetting( const wchar_t *name, const wchar_t *def )
{
	const wchar_t *str=FindSetting(name,wcslen(name));
	return str?str:def;
}

const wchar_t *CSettingsParser::FindSetting( const wchar_t *name, size_t len )
{
	for (size_t i=0;i<m_Lines.size();i++)
	{
		const wchar_t *str=m_Lines[i];
		if (_wcsnicmp(name,str,len)==0)
		{
			str+=len;
			while (*str==' ' || *str=='\t')
				str++;
			if (*str!='=') continue;
			str++;
			while (*str==' ' || *str=='\t')
				str++;
			return *str?str:NULL;
		}
	}

	return NULL;
}

// Frees all resources
void CSettingsParser::Reset( void )
{
	m_Lines.clear();
	m_Text.clear();
}

///////////////////////////////////////////////////////////////////////////////

bool CSkinParser::LoadVariation( const wchar_t *fname )
{
	m_VarText.swap(m_Text);
	bool res=LoadText(fname);
	if (res)
	{
		std::vector<const wchar_t*> lines;
		lines.swap(m_Lines);
		ParseText();
		m_Lines.insert(m_Lines.end(),lines.begin(),lines.end());
	}
	m_VarText.swap(m_Text);
	return res;
}

bool CSkinParser::LoadVariation( HMODULE hMod, HRSRC hResInfo )
{
	m_VarText.swap(m_Text);
	bool res=LoadText(hMod,hResInfo);
	if (res)
	{
		std::vector<const wchar_t*> lines;
		lines.swap(m_Lines);
		ParseText();
		m_Lines.insert(m_Lines.end(),lines.begin(),lines.end());
	}
	m_VarText.swap(m_Text);
	return res;
}

void CSkinParser::Reset( void )
{
	CSettingsParser::Reset();
	m_VarText.clear();
}

///////////////////////////////////////////////////////////////////////////////

const wchar_t *GetToken( const wchar_t *text, wchar_t *token, int size, const wchar_t *separators )
{
	while (*text && wcschr(separators,*text))
		text++;
	const wchar_t *c1=text,*c2;
	if (text[0]=='\"')
	{
		c1++;
		c2=wcschr(c1,'\"');
	}
	else
	{
		c2=c1;
		while (*c2!=0 && !wcschr(separators,*c2))
			c2++;
	}
	if (!c2) c2=text+wcslen(text);
	int l=(int)(c2-c1);
	if (l>size-1) l=size-1;
	memcpy(token,c1,l*2);
	token[l]=0;

	if (*c2) return c2+1;
	else return c2;
}

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License

This article, along with any associated source code and files, is licensed under The MIT License

About the Author

Ivo Beltchev
Software Developer (Senior)
United States United States
Ivo started programming in 1985 on an Apple ][ clone. He graduated from Sofia University, Bulgaria with a MSCS degree. Ivo has been working as a professional programmer for over 12 years, and as a professional game programmer for over 10. He is currently employed in Pandemic Studios, a video game company in Los Angeles, California.

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