-/*****************************************************************************\r
- * utils.cpp: ActiveX control for VLC\r
- *****************************************************************************\r
- * Copyright (C) 2005 VideoLAN\r
- *\r
- * Authors: Damien Fouilleul <Damien.Fouilleul@laposte.net>\r
- *\r
- * This program is free software; you can redistribute it and/or modify\r
- * it under the terms of the GNU General Public License as published by\r
- * the Free Software Foundation; either version 2 of the License, or\r
- * (at your option) any later version.\r
- *\r
- * This program is distributed in the hope that it will be useful,\r
- * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
- * GNU General Public License for more details.\r
- *\r
- * You should have received a copy of the GNU General Public License\r
- * along with this program; if not, write to the Free Software\r
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.\r
- *****************************************************************************/\r
-\r
-#include "utils.h"\r
-\r
-/*\r
-** conversion facilities\r
-*/\r
-\r
-using namespace std;\r
-\r
-char *CStrFromBSTR(int codePage, BSTR bstr)\r
-{\r
- UINT len = SysStringLen(bstr);\r
- if( len > 0 )\r
- {\r
- size_t mblen = WideCharToMultiByte(codePage,\r
- 0, bstr, len, NULL, 0, NULL, NULL);\r
- if( mblen > 0 )\r
- {\r
- char *buffer = (char *)malloc(mblen+1);\r
- ZeroMemory(buffer, mblen+1);\r
- if( WideCharToMultiByte(CP_ACP, 0, bstr, len, buffer, mblen, NULL, NULL) )\r
- return buffer;\r
- }\r
- }\r
- return NULL;\r
-};\r
-\r
-BSTR BSTRFromCStr(int codePage, const char *s)\r
-{\r
- int wideLen = MultiByteToWideChar(codePage, 0, s, -1, NULL, 0);\r
- if( wideLen )\r
- {\r
- WCHAR* wideStr = (WCHAR*)malloc(wideLen*sizeof(WCHAR));\r
- if( NULL != wideStr )\r
- {\r
- BSTR bstr;\r
-\r
- ZeroMemory(wideStr, wideLen*sizeof(WCHAR));\r
- MultiByteToWideChar(codePage, 0, s, -1, wideStr, wideLen);\r
- bstr = SysAllocString(wideStr);\r
- free(wideStr);\r
-\r
- return bstr;\r
- }\r
- }\r
- return NULL;\r
-};\r
-\r
-/*\r
-** properties\r
-*/\r
-\r
-HRESULT GetObjectProperty(LPUNKNOWN object, DISPID dispID, VARIANT& v)\r
-{\r
- IDispatch *pDisp;\r
- HRESULT hr = object->QueryInterface(IID_IDispatch, (LPVOID *)&pDisp);\r
- if( SUCCEEDED(hr) )\r
- {\r
- DISPPARAMS dispparamsNoArgs = {NULL, NULL, 0, 0};\r
- VARIANT vres;\r
- hr = pDisp->Invoke(dispID, IID_NULL, LOCALE_USER_DEFAULT,\r
- DISPATCH_PROPERTYGET, &dispparamsNoArgs, &vres, NULL, NULL);\r
- if( SUCCEEDED(hr) )\r
- {\r
- if( V_VT(&v) != V_VT(&vres) )\r
- {\r
- hr = VariantChangeType(&v, &vres, 0, V_VT(&v));\r
- VariantClear(&vres);\r
- }\r
- else\r
- {\r
- v = vres;\r
- }\r
- }\r
- pDisp->Release();\r
- }\r
- return hr;\r
-};\r
-\r
-\r
+/*****************************************************************************
+ * utils.cpp: ActiveX control for VLC
+ *****************************************************************************
+ * Copyright (C) 2005 the VideoLAN team
+ *
+ * Authors: Damien Fouilleul <Damien.Fouilleul@laposte.net>
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#include "utils.h"
+
+#include <wchar.h>
+#include <wctype.h>
+
+/*
+** conversion facilities
+*/
+
+using namespace std;
+
+char *CStrFromWSTR(UINT codePage, LPCWSTR wstr, UINT len)
+{
+ if( len > 0 )
+ {
+ size_t mblen = WideCharToMultiByte(codePage,
+ 0, wstr, len, NULL, 0, NULL, NULL);
+ if( mblen > 0 )
+ {
+ char *buffer = (char *)CoTaskMemAlloc(mblen+1);
+ ZeroMemory(buffer, mblen+1);
+ if( WideCharToMultiByte(codePage, 0, wstr, len, buffer, mblen, NULL, NULL) )
+ {
+ buffer[mblen] = '\0';
+ return buffer;
+ }
+ }
+ }
+ return NULL;
+};
+
+char *CStrFromBSTR(UINT codePage, BSTR bstr)
+{
+ return CStrFromWSTR(codePage, bstr, SysStringLen(bstr));
+};
+
+BSTR BSTRFromCStr(UINT codePage, LPCSTR s)
+{
+ int wideLen = MultiByteToWideChar(codePage, 0, s, -1, NULL, 0);
+ if( wideLen > 0 )
+ {
+ WCHAR* wideStr = (WCHAR*)CoTaskMemAlloc(wideLen*sizeof(WCHAR));
+ if( NULL != wideStr )
+ {
+ BSTR bstr;
+
+ ZeroMemory(wideStr, wideLen*sizeof(WCHAR));
+ MultiByteToWideChar(codePage, 0, s, -1, wideStr, wideLen);
+ bstr = SysAllocStringLen(wideStr, wideLen-1);
+ CoTaskMemFree(wideStr);
+
+ return bstr;
+ }
+ }
+ return NULL;
+};
+
+/*
+** properties
+*/
+
+HRESULT GetObjectProperty(LPUNKNOWN object, DISPID dispID, VARIANT& v)
+{
+ IDispatch *pDisp;
+ HRESULT hr = object->QueryInterface(IID_IDispatch, (LPVOID *)&pDisp);
+ if( SUCCEEDED(hr) )
+ {
+ DISPPARAMS dispparamsNoArgs = {NULL, NULL, 0, 0};
+ VARIANT vres;
+ VariantInit(&vres);
+ hr = pDisp->Invoke(dispID, IID_NULL, LOCALE_USER_DEFAULT,
+ DISPATCH_PROPERTYGET, &dispparamsNoArgs, &vres, NULL, NULL);
+ if( SUCCEEDED(hr) )
+ {
+ if( V_VT(&v) != V_VT(&vres) )
+ {
+ hr = VariantChangeType(&v, &vres, 0, V_VT(&v));
+ VariantClear(&vres);
+ }
+ else
+ {
+ v = vres;
+ }
+ }
+ pDisp->Release();
+ }
+ return hr;
+};
+
+HDC CreateDevDC(DVTARGETDEVICE *ptd)
+{
+ HDC hdc=NULL;
+ if( NULL == ptd )
+ {
+ hdc = CreateDC(TEXT("DISPLAY"), NULL, NULL, NULL);
+ }
+ else
+ {
+ LPDEVNAMES lpDevNames;
+ LPDEVMODE lpDevMode;
+ LPTSTR lpszDriverName;
+ LPTSTR lpszDeviceName;
+ LPTSTR lpszPortName;
+
+ lpDevNames = (LPDEVNAMES) ptd; // offset for size field
+
+ if (ptd->tdExtDevmodeOffset == 0)
+ {
+ lpDevMode = NULL;
+ }
+ else
+ {
+ lpDevMode = (LPDEVMODE) ((LPTSTR)ptd + ptd->tdExtDevmodeOffset);
+ }
+
+ lpszDriverName = (LPTSTR) lpDevNames + ptd->tdDriverNameOffset;
+ lpszDeviceName = (LPTSTR) lpDevNames + ptd->tdDeviceNameOffset;
+ lpszPortName = (LPTSTR) lpDevNames + ptd->tdPortNameOffset;
+
+ hdc = CreateDC(lpszDriverName, lpszDeviceName, lpszPortName, lpDevMode);
+ }
+ return hdc;
+};
+
+#define HIMETRIC_PER_INCH 2540
+
+void DPFromHimetric(HDC hdc, LPPOINT pt, int count)
+{
+ LONG lpX = GetDeviceCaps(hdc, LOGPIXELSX);
+ LONG lpY = GetDeviceCaps(hdc, LOGPIXELSY);
+ while( count-- )
+ {
+ pt->x = pt->x*lpX/HIMETRIC_PER_INCH;
+ pt->y = pt->y*lpY/HIMETRIC_PER_INCH;
+ ++pt;
+ }
+};
+
+void HimetricFromDP(HDC hdc, LPPOINT pt, int count)
+{
+ LONG lpX = GetDeviceCaps(hdc, LOGPIXELSX);
+ LONG lpY = GetDeviceCaps(hdc, LOGPIXELSY);
+ while( count-- )
+ {
+ pt->x = pt->x*HIMETRIC_PER_INCH/lpX;
+ pt->y = pt->y*HIMETRIC_PER_INCH/lpY;
+ ++pt;
+ }
+};
+
+
+LPWSTR CombineURL(LPCWSTR baseUrl, LPCWSTR url)
+{
+ if( NULL != url )
+ {
+ // check whether URL is already absolute
+ const wchar_t *end=wcschr(url, L':');
+ if( (NULL != end) && (end != url) )
+ {
+ // validate protocol header
+ const wchar_t *start = url;
+ wchar_t c = *start;
+ if( iswalpha(c) )
+ {
+ ++start;
+ while( start != end )
+ {
+ c = *start;
+ if( ! (iswalnum(c)
+ || (L'-' == c)
+ || (L'+' == c)
+ || (L'.' == c)
+ || (L'/' == c)) ) /* VLC uses / to allow user to specify a demuxer */
+ // not valid protocol header, assume relative URL
+ goto relativeurl;
+ ++start;
+ }
+ /* we have a protocol header, therefore URL is absolute */
+ UINT len = wcslen(url);
+ wchar_t *href = (LPWSTR)CoTaskMemAlloc((len+1)*sizeof(wchar_t));
+ if( href )
+ {
+ memcpy(href, url, len*sizeof(wchar_t));
+ href[len] = L'\0';
+ }
+ return href;
+ }
+ }
+
+relativeurl:
+
+ if( baseUrl )
+ {
+ size_t baseLen = wcslen(baseUrl);
+ wchar_t *href = (LPWSTR)CoTaskMemAlloc((baseLen+wcslen(url)+1)*sizeof(wchar_t));
+ if( href )
+ {
+ /* prepend base URL */
+ wcscpy(href, baseUrl);
+
+ /*
+ ** relative url could be empty,
+ ** in which case return base URL
+ */
+ if( L'\0' == *url )
+ return href;
+
+ /*
+ ** locate pathname part of base URL
+ */
+
+ /* skip over protocol part */
+ wchar_t *pathstart = wcschr(href, L':');
+ wchar_t *pathend;
+ if( pathstart )
+ {
+ if( L'/' == *(++pathstart) )
+ {
+ if( L'/' == *(++pathstart) )
+ {
+ ++pathstart;
+ }
+ }
+ /* skip over host part */
+ pathstart = wcschr(pathstart, L'/');
+ pathend = href+baseLen;
+ if( ! pathstart )
+ {
+ // no path, add a / past end of url (over '\0')
+ pathstart = pathend;
+ *pathstart = L'/';
+ }
+ }
+ else
+ {
+ /* baseURL is just a UNIX file path */
+ if( L'/' != *href )
+ {
+ /* baseURL is not an absolute path */
+ return NULL;
+ }
+ pathstart = href;
+ pathend = href+baseLen;
+ }
+
+ /* relative URL made of an absolute path ? */
+ if( L'/' == *url )
+ {
+ /* replace path completely */
+ wcscpy(pathstart, url);
+ return href;
+ }
+
+ /* find last path component and replace it */
+ while( L'/' != *pathend )
+ --pathend;
+
+ /*
+ ** if relative url path starts with one or more './' or '../',
+ ** factor them out of href so that we return a
+ ** normalized URL
+ */
+ while( pathend > pathstart )
+ {
+ const wchar_t *p = url;
+ if( L'.' != *p )
+ break;
+ ++p;
+ if( L'\0' == *p )
+ {
+ /* relative url is just '.' */
+ url = p;
+ break;
+ }
+ if( L'/' == *p )
+ {
+ /* relative url starts with './' */
+ url = ++p;
+ continue;
+ }
+ if( L'.' != *p )
+ break;
+ ++p;
+ if( L'\0' == *p )
+ {
+ /* relative url is '..' */
+ }
+ else
+ {
+ if( L'/' != *p )
+ break;
+ /* relative url starts with '../' */
+ ++p;
+ }
+ url = p;
+ do
+ {
+ --pathend;
+ }
+ while( L'/' != *pathend );
+ }
+ /* skip over '/' separator */
+ ++pathend;
+ /* concatenate remaining base URL and relative URL */
+ wcscpy(pathend, url);
+ }
+ return href;
+ }
+ }
+ return NULL;
+}
+
projects / vlc / blobdiff