X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fcross_windows.cc;h=49eec3c28ff01b19a18c427f16521eea869a67e8;hb=f0d7300770806592e7fe7a494e66a96ab48463cf;hp=04ee26271b7a5c80595c1ce87e38b87a2de5fad1;hpb=3339d3bce70afe9ae2ca10e9fcfc4b54b748fbf4;p=dcpomatic.git

diff --git a/src/lib/cross_windows.cc b/src/lib/cross_windows.cc
index 04ee26271..49eec3c28 100644
--- a/src/lib/cross_windows.cc
+++ b/src/lib/cross_windows.cc
@@ -19,6 +19,8 @@
 */
 
 
+#define UNICODE 1
+
 #include "cross.h"
 #include "compose.hpp"
 #include "log.h"
@@ -26,6 +28,7 @@
 #include "config.h"
 #include "exceptions.h"
 #include "dcpomatic_assert.h"
+#include "util.h"
 #include <dcp/raw_convert.h>
 #include <glib.h>
 extern "C" {
@@ -234,6 +237,44 @@ disk_writer_path ()
 #endif
 
 
+/** Windows can't "by default" cope with paths longer than 260 characters, so if you pass such a path to
+ *  any boost::filesystem method it will fail.  There is a "fix" for this, which is to prepend
+ *  the string \\?\ to the path.  This will make it work, so long as:
+ *  - the path is absolute.
+ *  - the path only uses backslashes.
+ *  - individual path components are "short enough" (probably less than 255 characters)
+ *
+ *  See https://www.boost.org/doc/libs/1_57_0/libs/filesystem/doc/reference.html under
+ *  "Warning: Long paths on Windows" for some details.
+ *
+ *  Our fopen_boost uses this method to get this fix, but any other calls to boost::filesystem
+ *  will not unless this method is explicitly called to pre-process the pathname.
+ */
+boost::filesystem::path
+fix_long_path (boost::filesystem::path long_path)
+{
+	using namespace boost::filesystem;
+
+	if (boost::algorithm::starts_with(long_path.string(), "\\\\")) {
+		/* This could mean it starts with \\ (i.e. a SMB path) or \\?\ (a long path)
+		 * or a variety of other things... anyway, we'll leave it alone.
+		 */
+		return long_path;
+	}
+
+	/* We have to make the path canonical but we can't call canonical() on the long path
+	 * as it will fail.  So we'll sort of do it ourselves (possibly badly).
+	 */
+	path fixed = "\\\\?\\";
+	if (long_path.is_absolute()) {
+		fixed += long_path.make_preferred();
+	} else {
+		fixed += boost::filesystem::current_path() / long_path.make_preferred();
+	}
+	return fixed;
+}
+
+
 /* Apparently there is no way to create an ofstream using a UTF-8
    filename under Windows.  We are hence reduced to using fopen
    with this wrapper.
@@ -242,8 +283,8 @@ FILE *
 fopen_boost (boost::filesystem::path p, string t)
 {
         wstring w (t.begin(), t.end());
-	/* c_str() here should give a UTF-16 string */
-        return _wfopen (p.c_str(), w.c_str ());
+	/* c_str() on fixed here should give a UTF-16 string */
+	return _wfopen (fix_long_path(p).c_str(), w.c_str());
 }
 
 
@@ -317,10 +358,9 @@ static string
 wchar_to_utf8 (wchar_t const * s)
 {
 	int const length = (wcslen(s) + 1) * 2;
-	char* utf8 = new char[length];
-	WideCharToMultiByte (CP_UTF8, 0, s, -1, utf8, length, 0, 0);
-	string u (utf8);
-	delete[] utf8;
+	std::vector<char> utf8(length);
+	WideCharToMultiByte (CP_UTF8, 0, s, -1, utf8.data(), length, 0, 0);
+	string u (utf8.data());
 	return u;
 }
 
@@ -356,7 +396,7 @@ maybe_open_console ()
 boost::filesystem::path
 home_directory ()
 {
-	return boost::filesystem::path(getenv("HOMEDRIVE")) / boost::filesystem::path(getenv("HOMEPATH"));
+	return boost::filesystem::path(getenv("userprofile"));
 }
 
 
@@ -634,11 +674,14 @@ Drive::unmount ()
 
 
 boost::filesystem::path
-config_path ()
+config_path (optional<string> version)
 {
 	boost::filesystem::path p;
 	p /= g_get_user_config_dir ();
 	p /= "dcpomatic2";
+	if (version) {
+		p /= *version;
+	}
 	return p;
 }
 
@@ -658,3 +701,13 @@ dcpomatic::get_process_id ()
 	return dcp::raw_convert<string>(GetCurrentProcessId());
 }
 
+
+bool
+show_in_file_manager (boost::filesystem::path, boost::filesystem::path select)
+{
+	std::wstringstream args;
+	args << "/select," << select;
+	auto const r = ShellExecute (0, L"open", L"explorer.exe", args.str().c_str(), 0, SW_SHOWDEFAULT);
+	return (reinterpret_cast<int64_t>(r) <= 32);
+}
+