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Cleaned up old Windows file rename workaround by using Win API native functions; see issue #430

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This commit is contained in:
Oliver Duis
2010-12-24 09:33:12 +01:00
parent 70d82a4fa4
commit 0b93426042
3 changed files with 35 additions and 20 deletions
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33
rtengine/safegtk.cc
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@@ -22,6 +22,10 @@
#include <safegtk.h>
#include <guiutils.h>
#include <glib/gstdio.h>
#ifdef WIN32
#include <windows.h>
#include <fcntl.h>
#endif
Glib::RefPtr<Gdk::Pixbuf> safe_create_from_file(const std::string& filename)
@@ -169,7 +173,7 @@ bool safe_spawn_command_line_async (const Glib::ustring& cmd_utf8)
#ifdef GLIBMM_EXCEPTIONS_ENABLED
try {
cmd = Glib::filename_from_utf8(cmd_utf8);
printf ("command line: |%s|\n", cmd.c_str());
printf ("command line: %s\n", cmd.c_str());
Glib::spawn_command_line_async (cmd.c_str());
success = true;
} catch (Glib::Exception& ex) {
@@ -179,7 +183,7 @@ bool safe_spawn_command_line_async (const Glib::ustring& cmd_utf8)
std::auto_ptr<Glib::Error> error;
cmd = Glib::filename_from_utf8(cmd_utf8, error);
if (!error.get()) {
printf ("command line: |%s|\n", cmd.c_str());
printf ("command line: %s\n", cmd.c_str());
Glib::spawn_command_line_async (cmd, error);
}
if (error.get())
@@ -201,7 +205,7 @@ bool safe_spawn_command_line_sync (const Glib::ustring& cmd_utf8)
int exitStatus=-1;
try {
//cmd = Glib::filename_from_utf8(cmd_utf8);
printf ("command line: |%s|\n", cmd_utf8.c_str());
printf ("command line: %s\n", cmd_utf8.c_str());
// if it crashes here on windows, make sure you have the GTK runtime files gspawn-win32-helper*.exe files in RT directory
Glib::spawn_command_line_sync (cmd_utf8, NULL, NULL, &exitStatus);
@@ -211,6 +215,29 @@ bool safe_spawn_command_line_sync (const Glib::ustring& cmd_utf8)
return (exitStatus==0);
}
// Opens a file for binary writing and request exclusive lock (cases were you need "wb" mode plus locking)
// (Important on Windows to prevent Explorer to crash RT when parallel scanning e.g. a currently written image file)
FILE * safe_g_fopen_WriteBinLock(const Glib::ustring& fname) {
FILE* f=NULL;
#ifdef WIN32
// g_fopen just uses _wfopen internally on Windows, does not lock access and has no options to set this
// so use a native function to work around this problem
wchar_t *wFname = (wchar_t*)g_utf8_to_utf16 (fname.c_str(), -1, NULL, NULL, NULL);
HANDLE hFile = CreateFileW(wFname, GENERIC_READ | GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
g_free(wFname);
if (hFile==INVALID_HANDLE_VALUE)
f=NULL;
else
f=_fdopen( _open_osfhandle((intptr_t)hFile, 0) , "wb");
#else
f = safe_g_fopen(fname, "wb");
#endif
return f;
}
FILE * safe_g_fopen(const Glib::ustring& src,const gchar *mode)
{
return g_fopen(src.c_str(),mode);