/////////////////////////////////////////////////////////////////////////////
-// Name: utils.cpp
+// Name: src/os2/utils.cpp
// Purpose: Various utilities
-// Author: AUTHOR
+// Author: David Webster
// Modified by:
-// Created: ??/??/98
+// Created: 09/17/99
// RCS-ID: $Id$
-// Copyright: (c) AUTHOR
-// Licence: wxWindows licence
+// Copyright: (c) David Webster
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-// Note: this is done in utilscmn.cpp now.
-// #pragma implementation
-// #pragma implementation "utils.h"
-#endif
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
-#include "wx/setup.h"
#include "wx/utils.h"
-#include "wx/app.h"
+
+#ifndef WX_PRECOMP
+ #include "wx/intl.h"
+ #include "wx/log.h"
+#endif //WX_PRECOMP
+
+#include "wx/os2/private.h"
+#include "wx/apptrait.h"
+#include "wx/filename.h"
#include <ctype.h>
+#ifdef __EMX__
+#include <dirent.h>
+#endif
+
+
+#include <io.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <errno.h>
#include <stdarg.h>
+#define PURE_32
+
+#if defined(__WATCOMC__)
+extern "C"
+{
+ #include <upm.h>
+}
+#elif !defined(__EMX__)
+ #include <upm.h>
+ #include <netcons.h>
+ #include <netbios.h>
+#endif
+
+static const wxChar WX_SECTION[] = wxT("wxWidgets");
+static const wxChar eHOSTNAME[] = wxT("HostName");
+
+// For the following functions we SHOULD fill in support
+// for Windows-NT (which I don't know) as I assume it begin
+// a POSIX Unix (so claims MS) that it has some special
+// functions beyond those provided by WinSock
+
// Get full hostname (eg. DoDo.BSn-Germany.crg.de)
-bool wxGetHostName(char *buf, int maxSize)
+bool wxGetHostName( wxChar* zBuf, int nMaxSize )
{
- // TODO
- return FALSE;
+ if (!zBuf) return false;
+
+#if defined(wxUSE_NET_API) && wxUSE_NET_API
+ char zServer[256];
+ char zComputer[256];
+ unsigned long ulLevel = 0;
+ unsigned char* zBuffer = NULL;
+ unsigned long ulBuffer = 256;
+ unsigned long* pulTotalAvail = NULL;
+
+ NetBios32GetInfo( (const unsigned char*)zServer
+ ,(const unsigned char*)zComputer
+ ,ulLevel
+ ,zBuffer
+ ,ulBuffer
+ ,pulTotalAvail
+ );
+ strcpy(zBuf, zServer);
+#else
+ wxChar* zSysname;
+ const wxChar* zDefaultHost = wxT("noname");
+
+ if ((zSysname = wxGetenv(wxT("SYSTEM_NAME"))) == NULL &&
+ (zSysname = wxGetenv(wxT("HOSTNAME"))) == NULL)
+ {
+ ::PrfQueryProfileString( HINI_PROFILE
+ ,(PSZ)WX_SECTION
+ ,(PSZ)eHOSTNAME
+ ,(PSZ)zDefaultHost
+ ,(void*)zBuf
+ ,(ULONG)nMaxSize - 1
+ );
+ zBuf[nMaxSize] = wxT('\0');
+ }
+ else
+ {
+ wxStrlcpy(zBuf, zSysname, nMaxSize);
+ }
+#endif
+
+ return *zBuf ? true : false;
}
// Get user ID e.g. jacs
-bool wxGetUserId(char *buf, int maxSize)
+bool wxGetUserId(wxChar* zBuf, int nType)
{
- // TODO
- return FALSE;
+#if defined(__VISAGECPP__) || defined(__WATCOMC__)
+ // UPM procs return 0 on success
+ long lrc = U32ELOCU((PUCHAR)zBuf, (PULONG)&nType);
+ if (lrc == 0) return true;
+#endif
+ return false;
}
-// Get user name e.g. AUTHOR
-bool wxGetUserName(char *buf, int maxSize)
+bool wxGetUserName( wxChar* zBuf, int nMaxSize )
{
- // TODO
- return FALSE;
+#ifdef USE_NET_API
+ wxGetUserId( zBuf, nMaxSize );
+#else
+ wxStrlcpy(zBuf, wxT("Unknown User"), nMaxSize);
+#endif
+ return true;
}
-int wxKill(long pid, int sig)
+int wxKill(long lPid,
+ wxSignal WXUNUSED(eSig),
+ wxKillError* WXUNUSED(peError),
+ int WXUNUSED(flags))
{
- // TODO
- return 0;
+ return((int)::DosKillProcess(0, (PID)lPid));
}
//
// Execute a program in an Interactive Shell
//
-bool wxShell(const wxString& command)
+bool wxShell( const wxString& rCommand )
{
- // TODO
- return FALSE;
+ wxChar* zShell = wxT("CMD.EXE");
+ wxString sInputs;
+ STARTDATA SData = {0};
+ PSZ PgmTitle = "Command Shell";
+ APIRET rc;
+ PID vPid = 0;
+ ULONG ulSessID = 0;
+ UCHAR achObjBuf[256] = {0}; //error data if DosStart fails
+ RESULTCODES vResult;
+
+ SData.Length = sizeof(STARTDATA);
+ SData.Related = SSF_RELATED_INDEPENDENT;
+ SData.FgBg = SSF_FGBG_FORE;
+ SData.TraceOpt = SSF_TRACEOPT_NONE;
+ SData.PgmTitle = PgmTitle;
+ SData.PgmName = (char*)zShell;
+
+ sInputs = wxT("/C ") + rCommand;
+ SData.PgmInputs = (BYTE*)sInputs.wx_str();
+ SData.TermQ = 0;
+ SData.Environment = 0;
+ SData.InheritOpt = SSF_INHERTOPT_SHELL;
+ SData.SessionType = SSF_TYPE_WINDOWABLEVIO;
+ SData.IconFile = 0;
+ SData.PgmHandle = 0;
+ SData.PgmControl = SSF_CONTROL_VISIBLE | SSF_CONTROL_MAXIMIZE;
+ SData.InitXPos = 30;
+ SData.InitYPos = 40;
+ SData.InitXSize = 200;
+ SData.InitYSize = 140;
+ SData.Reserved = 0;
+ SData.ObjectBuffer = (char*)achObjBuf;
+ SData.ObjectBuffLen = (ULONG)sizeof(achObjBuf);
+
+ rc = ::DosStartSession(&SData, &ulSessID, &vPid);
+ if (rc == 0 || rc == 457) // NO_ERROR or SMG_START_IN_BACKGROUND
+ {
+ PTIB ptib;
+ PPIB ppib;
+
+ ::DosGetInfoBlocks(&ptib, &ppib);
+
+ ::DosWaitChild( DCWA_PROCESS
+ ,DCWW_WAIT
+ ,&vResult
+ ,&ppib->pib_ulpid
+ ,vPid
+ );
+ }
+ return (rc != 0);
}
-// Get free memory in bytes, or -1 if cannot determine amount (e.g. on UNIX)
-long wxGetFreeMemory()
+// Shutdown or reboot the PC
+bool wxShutdown(wxShutdownFlags WXUNUSED(wFlags))
{
// TODO
- return 0;
+ return false;
}
-void wxSleep(int nSecs)
+// Get free memory in bytes, or -1 if cannot determine amount (e.g. on UNIX)
+wxMemorySize wxGetFreeMemory()
{
- // TODO
+ void* pMemptr = NULL;
+ LONG lSize;
+ ULONG lMemFlags;
+ APIRET rc;
+
+ lMemFlags = PAG_FREE;
+ rc = ::DosQueryMem(pMemptr, (PULONG)&lSize, &lMemFlags);
+ if (rc != 0)
+ lSize = -1L;
+ return (wxMemorySize)lSize;
}
-// Consume all events until no more left
-void wxFlushEvents()
+// Get Process ID
+unsigned long wxGetProcessId()
{
+ return (unsigned long)getpid();
}
-// Output a debug message, in a system dependent fashion.
-void wxDebugMsg(const char *fmt ...)
-{
- va_list ap;
- static char buffer[512];
-
- if (!wxTheApp->GetWantDebugOutput())
- return ;
+// ----------------------------------------------------------------------------
+// env vars
+// ----------------------------------------------------------------------------
- va_start(ap, fmt);
+bool wxGetEnv(const wxString& var, wxString *value)
+{
+ // wxGetenv is defined as getenv()
+ wxChar *p = wxGetenv((const wxChar *)var);
+ if ( !p )
+ return false;
- // wvsprintf(buffer,fmt,ap) ;
- // TODO: output buffer
+ if ( value )
+ {
+ *value = p;
+ }
- va_end(ap);
+ return true;
}
-// Non-fatal error: pop up message box and (possibly) continue
-void wxError(const wxString& msg, const wxString& title)
+static bool wxDoSetEnv(const wxString& variable, const char *value)
{
- // TODO
- wxExit();
+#if defined(HAVE_SETENV)
+ if ( !value )
+ {
+#ifdef HAVE_UNSETENV
+ return unsetenv(variable.mb_str()) == 0;
+#else
+ value = wxT(""); // mustn't pass NULL to setenv()
+#endif
+ }
+ return setenv(variable.mb_str(), value, 1 /* overwrite */) == 0;
+#elif defined(HAVE_PUTENV)
+ wxString s = variable;
+ if ( value )
+ s << wxT('=') << value;
+
+ // transform to ANSI
+ const char *p = s.mb_str();
+
+ // the string will be free()d by libc
+ char *buf = (char *)malloc(strlen(p) + 1);
+ strcpy(buf, p);
+
+ return putenv(buf) == 0;
+#else // no way to set an env var
+ wxUnusedVar(variable);
+ wxUnusedVar(value);
+ return false;
+#endif
}
-// Fatal error: pop up message box and abort
-void wxFatalError(const wxString& msg, const wxString& title)
+bool wxSetEnv(const wxString& variable, const wxString& value)
{
- // TODO
+ return wxDoSetEnv(variable, value.mb_str());
}
-// Emit a beeeeeep
-void wxBell()
+bool wxUnsetEnv(const wxString& variable)
{
- // TODO
+ return wxDoSetEnv(variable, NULL);
}
-int wxGetOsVersion(int *majorVsn, int *minorVsn)
+void wxMilliSleep(
+ unsigned long ulMilliseconds
+)
{
- // TODO
- return 0;
+ ::DosSleep(ulMilliseconds);
}
-// Reading and writing resources (eg WIN.INI, .Xdefaults)
-#if wxUSE_RESOURCES
-bool wxWriteResource(const wxString& section, const wxString& entry, const wxString& value, const wxString& file)
+void wxMicroSleep(
+ unsigned long ulMicroseconds
+)
{
- // TODO
- return FALSE;
+ ::DosSleep(ulMicroseconds/1000);
}
-bool wxWriteResource(const wxString& section, const wxString& entry, float value, const wxString& file)
+void wxSleep(
+ int nSecs
+)
{
- char buf[50];
- sprintf(buf, "%.4f", value);
- return wxWriteResource(section, entry, buf, file);
+ ::DosSleep(1000 * nSecs);
}
-bool wxWriteResource(const wxString& section, const wxString& entry, long value, const wxString& file)
+// Consume all events until no more left
+void wxFlushEvents()
{
- char buf[50];
- sprintf(buf, "%ld", value);
- return wxWriteResource(section, entry, buf, file);
+// wxYield();
}
-bool wxWriteResource(const wxString& section, const wxString& entry, int value, const wxString& file)
+// Emit a beeeeeep
+void wxBell()
{
- char buf[50];
- sprintf(buf, "%d", value);
- return wxWriteResource(section, entry, buf, file);
+ DosBeep(1000,1000); // 1kHz during 1 sec.
}
-bool wxGetResource(const wxString& section, const wxString& entry, char **value, const wxString& file)
+wxString wxGetOsDescription()
{
- // TODO
- return FALSE;
+ wxString strVer(wxT("OS/2"));
+ ULONG ulSysInfo = 0;
+
+ if (::DosQuerySysInfo( QSV_VERSION_MINOR,
+ QSV_VERSION_MINOR,
+ (PVOID)&ulSysInfo,
+ sizeof(ULONG)
+ ) == 0L )
+ {
+ wxString ver;
+ ver.Printf( wxT(" ver. %d.%d"),
+ int(ulSysInfo / 10),
+ int(ulSysInfo % 10)
+ );
+ strVer += ver;
+ }
+
+ return strVer;
}
-bool wxGetResource(const wxString& section, const wxString& entry, float *value, const wxString& file)
+bool wxIsPlatform64Bit()
{
- char *s = NULL;
- bool succ = wxGetResource(section, entry, (char **)&s, file);
- if (succ)
- {
- *value = (float)strtod(s, NULL);
- delete[] s;
- return TRUE;
- }
- else return FALSE;
+ // FIXME: No idea how to test for 64 bit processor
+ // (Probably irrelevant anyhow, though).
+ return false;
}
-bool wxGetResource(const wxString& section, const wxString& entry, long *value, const wxString& file)
+void wxAppTraits::InitializeGui(unsigned long &WXUNUSED(ulHab))
{
- char *s = NULL;
- bool succ = wxGetResource(section, entry, (char **)&s, file);
- if (succ)
- {
- *value = strtol(s, NULL, 10);
- delete[] s;
- return TRUE;
- }
- else return FALSE;
}
-bool wxGetResource(const wxString& section, const wxString& entry, int *value, const wxString& file)
+void wxAppTraits::TerminateGui(unsigned long WXUNUSED(ulHab))
{
- char *s = NULL;
- bool succ = wxGetResource(section, entry, (char **)&s, file);
- if (succ)
- {
- *value = (int)strtol(s, NULL, 10);
- delete[] s;
- return TRUE;
- }
- else return FALSE;
}
-#endif // wxUSE_RESOURCES
-
-static int wxBusyCursorCount = 0;
-// Set the cursor to the busy cursor for all windows
-void wxBeginBusyCursor(wxCursor *cursor)
+wxOperatingSystemId wxGetOsVersion(int *verMaj, int *verMin)
{
- wxBusyCursorCount ++;
- if (wxBusyCursorCount == 1)
- {
- // TODO
- }
- else
- {
- // TODO
- }
+ ULONG ulSysInfo = 0;
+ APIRET ulrc;
+
+ ulrc = ::DosQuerySysInfo( QSV_VERSION_MINOR,
+ QSV_VERSION_MINOR,
+ (PVOID)&ulSysInfo,
+ sizeof(ULONG)
+ );
+
+ if (ulrc == 0L)
+ {
+ if ( verMaj )
+ *verMaj = ulSysInfo / 10;
+ if ( verMin )
+ *verMin = ulSysInfo % 10;
+ }
+
+ return wxOS_OS2;
}
-// Restore cursor to normal
-void wxEndBusyCursor()
-{
- if (wxBusyCursorCount == 0)
- return;
-
- wxBusyCursorCount --;
- if (wxBusyCursorCount == 0)
- {
- // TODO
- }
-}
-// TRUE if we're between the above two calls
-bool wxIsBusy()
+// ---------------------------------------------------------------------------
+const wxChar* wxGetHomeDir(
+ wxString* pStr
+)
{
- return (wxBusyCursorCount > 0);
-}
+ wxString& rStrDir = *pStr;
-char *wxGetUserHome (const wxString& user)
-{
- // TODO
- return NULL;
-}
+ // OS/2 has no idea about home,
+ // so use the working directory instead.
+ // However, we might have a valid HOME directory,
+ // as is used on many machines that have unix utilities
+ // on them, so we should use that, if available.
-// Check whether this window wants to process messages, e.g. Stop button
-// in long calculations.
-bool wxCheckForInterrupt(wxWindow *wnd)
-{
- // TODO
- return FALSE;
+ // 256 was taken from os2def.h
+#ifndef MAX_PATH
+# define MAX_PATH 256
+#endif
+
+ const wxChar *szHome = wxGetenv((wxChar*)"HOME");
+ if ( szHome == NULL ) {
+ // we're homeless, use current directory.
+ rStrDir = wxT(".");
+ }
+ else
+ rStrDir = szHome;
+
+ return rStrDir.c_str();
}
-void wxGetMousePosition( int* x, int* y )
+wxString wxGetUserHome ( const wxString &rUser )
{
- // TODO
-};
+ wxChar* zHome;
+ wxString sUser(rUser);
+
+ wxString home;
+
+#ifndef __EMX__
+ if (!sUser.empty())
+ {
+ const wxString currentUser = wxGetUserId();
+
+ // Guests belong in the temp dir
+ if ( currentUser == "annonymous" )
+ {
+ zHome = wxGetenv(wxT("TMP"));
+ if ( !zHome )
+ zHome = wxGetenv(wxT("TMPDIR"));
+ if ( !zHome )
+ zHome = wxGetenv(wxT("TEMP"));
+
+ if ( zHome && *zHome )
+ return zHome;
+ }
+
+ if ( sUser == currentUser )
+ sUser.clear();
+ }
+#endif
+ if (sUser.empty())
+ {
+ if ((zHome = wxGetenv(wxT("HOME"))) != NULL)
+ {
+ home = zHome;
+ home.Replace("/", "\\");
+ }
+ }
+
+ return home;
+}
-// Return TRUE if we have a colour display
-bool wxColourDisplay()
+bool wxGetDiskSpace(const wxString& path,
+ wxDiskspaceSize_t *pTotal,
+ wxDiskspaceSize_t *pFree)
{
- // TODO
- return TRUE;
+ if (path.empty())
+ return false;
+
+ wxFileName fn(path);
+ FSALLOCATE fsaBuf = {0};
+ APIRET rc = NO_ERROR;
+ ULONG disknum = 0;
+
+ fn.MakeAbsolute();
+
+ if (wxDirExists(fn.GetFullPath()) == false)
+ return false;
+
+ disknum = wxToupper(fn.GetVolume().GetChar(0)) - wxT('A') + 1;
+
+ rc = ::DosQueryFSInfo(disknum, // 1 = A, 2 = B, 3 = C, ...
+ FSIL_ALLOC, // allocation info
+ (PVOID)&fsaBuf,
+ sizeof(FSALLOCATE));
+
+ if (rc != NO_ERROR)
+ return false;
+ else
+ {
+ if(pTotal)
+ {
+ // to try to avoid 32-bit overflow, let's not multiply right away
+ // (num of alloc units)
+ *pTotal = fsaBuf.cUnit;
+ // * (num of sectors per alloc unit) * (num of bytes per sector)
+ (*pTotal) *= fsaBuf.cSectorUnit * fsaBuf.cbSector;
+ }
+ if(pFree)
+ {
+ *pFree = fsaBuf.cUnitAvail;
+ (*pFree) *= fsaBuf.cSectorUnit * fsaBuf.cbSector;
+ }
+ return true;
+ }
}
-// Returns depth of screen
-int wxDisplayDepth()
+wxString wxPMErrorToStr(ERRORID vError)
{
- // TODO
- return 0;
-}
+ wxString sError;
+
+ //
+ // Remove the high order byte -- it is useless
+ //
+ vError &= 0x0000ffff;
+ switch(vError)
+ {
+ case PMERR_INVALID_HWND:
+ sError = wxT("Invalid window handle specified");
+ break;
+
+ case PMERR_INVALID_FLAG:
+ sError = wxT("Invalid flag bit set");
+ break;
+
+ case PMERR_NO_MSG_QUEUE:
+ sError = wxT("No message queue available");
+ break;
+
+ case PMERR_INVALID_PARM:
+ sError = wxT("Parameter contained invalid data");
+ break;
+
+ case PMERR_INVALID_PARAMETERS:
+ sError = wxT("Parameter value is out of range");
+ break;
+
+ case PMERR_PARAMETER_OUT_OF_RANGE:
+ sError = wxT("Parameter value is out of range");
+ break;
+
+ case PMERR_INVALID_INTEGER_ATOM:
+ sError = wxT("Not a valid atom");
+ break;
+
+ case PMERR_INVALID_HATOMTBL:
+ sError = wxT("Atom table handle is invalid");
+ break;
+
+ case PMERR_INVALID_ATOM_NAME:
+ sError = wxT("Not a valid atom name");
+ break;
+
+ case PMERR_ATOM_NAME_NOT_FOUND:
+ sError = wxT("Valid name format, but cannot find name in atom table");
+ break;
+
+ case PMERR_INV_HPS:
+ sError = wxT("PMERR_INV_HPS");
+ break;
+
+ case PMERR_PS_BUSY:
+ sError = wxT("PMERR_PS_BUSY");
+ break;
+
+ case PMERR_INV_PRIMITIVE_TYPE:
+ sError = wxT("PMERR_INV_PRIMITIVE_TYPE");
+ break;
+
+ case PMERR_UNSUPPORTED_ATTR:
+ sError = wxT("PMERR_UNSUPPORTED_ATTR");
+ break;
+
+ case PMERR_INV_COLOR_ATTR:
+ sError = wxT("PMERR_INV_COLOR_ATTR");
+ break;
+
+ case PMERR_INV_BACKGROUND_COL_ATTR:
+ sError = wxT("PMERR_INV_BACKGROUND_COL_ATTR");
+ break;
+
+ case PMERR_INV_MIX_ATTR:
+ sError = wxT("PMERR_INV_MIX_ATTR");
+ break;
+
+ case PMERR_INV_LINE_WIDTH_ATTR:
+ sError = wxT("PMERR_INV_LINE_WIDTH_ATTR");
+ break;
+
+ case PMERR_INV_GEOM_LINE_WIDTH_ATTR:
+ sError = wxT("PMERR_INV_GEOM_LINE_WIDTH_ATTR");
+ break;
+
+ case PMERR_INV_LINE_TYPE_ATTR:
+ sError = wxT("PMERR_INV_LINE_TYPE_ATTR");
+ break;
+
+ case PMERR_INV_LINE_END_ATTR:
+ sError = wxT("PMERR_INV_LINE_END_ATTR");
+ break;
+
+ case PMERR_INV_LINE_JOIN_ATTR:
+ sError = wxT("PMERR_INV_LINE_JOIN_ATTR");
+ break;
+
+ case PMERR_INV_CHAR_SET_ATTR:
+ sError = wxT("PMERR_INV_CHAR_SET_ATTR");
+ break;
+
+ case PMERR_INV_CHAR_MODE_ATTR:
+ sError = wxT("PMERR_INV_CHAR_MODE_ATTR");
+ break;
+
+ case PMERR_INV_CHAR_DIRECTION_ATTR:
+ sError = wxT("PMERR_INV_CHAR_DIRECTION_ATTR");
+ break;
+
+ case PMERR_INV_CHAR_SHEAR_ATTR:
+ sError = wxT("PMERR_INV_CHAR_SHEAR_ATTR");
+ break;
+
+ case PMERR_INV_CHAR_ANGLE_ATTR:
+ sError = wxT("PMERR_INV_CHAR_ANGLE_ATTR");
+ break;
+
+ case PMERR_INV_MARKER_SET_ATTR:
+ sError = wxT("PMERR_INV_MARKER_SET_ATTR");
+ break;
+
+ case PMERR_INV_MARKER_SYMBOL_ATTR:
+ sError = wxT("PMERR_INV_MARKER_SYMBOL_ATTR");
+ break;
+
+ case PMERR_INV_PATTERN_SET_ATTR:
+ sError = wxT("PMERR_INV_PATTERN_SET_ATTR");
+ break;
-// Get size of display
-void wxDisplaySize(int *width, int *height)
+ case PMERR_INV_PATTERN_ATTR:
+ sError = wxT("PMERR_INV_PATTERN_ATTR");
+ break;
+
+ case PMERR_INV_COORDINATE:
+ sError = wxT("PMERR_INV_COORDINATE");
+ break;
+
+ case PMERR_UNSUPPORTED_ATTR_VALUE:
+ sError = wxT("PMERR_UNSUPPORTED_ATTR_VALUE");
+ break;
+
+ case PMERR_INV_PATTERN_SET_FONT:
+ sError = wxT("PMERR_INV_PATTERN_SET_FONT");
+ break;
+
+ case PMERR_HUGE_FONTS_NOT_SUPPORTED:
+ sError = wxT("PMERR_HUGE_FONTS_NOT_SUPPORTED");
+ break;
+
+ default:
+ sError = wxT("Unknown error");
+ }
+ return sError;
+} // end of wxPMErrorToStr
+
+// replacement for implementation in unix/utilsunx.cpp,
+// to be used by all X11 based ports.
+struct wxEndProcessData;
+
+void wxHandleProcessTermination(wxEndProcessData *WXUNUSED(proc_data))
{
- // TODO
+ // For now, just do nothing. To be filled in as needed.
}
-
projects / wxWidgets.git / blobdiff