Routines for calculating numerical labels for BibTeX citations.

[lyx.git] / src / support / os_win32.cpp

diff --git a/src/support/os_win32.cpp b/src/support/os_win32.cpp
index 65503f167230415080c35774d19ae0ad8fcdca8e..61ec17cb9afb3310367cae3c4c3935de780044d9 100644 (file)
--- a/src/support/os_win32.cpp
+++ b/src/support/os_win32.cpp
@@ -71,6 +71,9 @@
 using namespace std;
 
 namespace lyx {
+
+void emergencyCleanup();
+
 namespace support {
 namespace os {
 
@@ -80,6 +83,17 @@ bool windows_style_tex_paths_ = true;
 
 string cygdrive = "/cygdrive";
 
+BOOL terminate_handler(DWORD event)
+{
+       if (event == CTRL_CLOSE_EVENT
+           || event == CTRL_LOGOFF_EVENT
+           || event == CTRL_SHUTDOWN_EVENT) {
+               lyx::emergencyCleanup();
+               return TRUE;
+       }
+       return FALSE;
+}
+
 } // namespace anon
 
 void init(int /* argc */, char * argv[])
@@ -140,27 +154,44 @@ void init(int /* argc */, char * argv[])
         * lyx is invoked as a parameter of hidecmd.exe.
         */
 
-       // If cygwin is detected, query the cygdrive prefix
+       // If Cygwin is detected, query the cygdrive prefix
        HKEY regKey;
-       char buf[MAX_PATH];
-       DWORD bufSize = sizeof(buf);
        LONG retVal;
 
+       // Check for Cygwin 1.7 or later
        retVal = RegOpenKeyEx(HKEY_LOCAL_MACHINE,
-                       "Software\\Cygnus Solutions\\Cygwin\\mounts v2",
+                       "Software\\Cygwin\\setup",
                        0, KEY_QUERY_VALUE, &regKey);
-       if (retVal != ERROR_SUCCESS) {
+       if (retVal != ERROR_SUCCESS)
                retVal = RegOpenKeyEx(HKEY_CURRENT_USER,
+                               "Software\\Cygwin\\setup",
+                               0, KEY_QUERY_VALUE, &regKey);
+
+       // Check for older Cygwin versions
+       if (retVal != ERROR_SUCCESS)
+               retVal = RegOpenKeyEx(HKEY_LOCAL_MACHINE,
                                "Software\\Cygnus Solutions\\Cygwin\\mounts v2",
                                0, KEY_QUERY_VALUE, &regKey);
-       }
+       if (retVal != ERROR_SUCCESS)
+                       retVal = RegOpenKeyEx(HKEY_CURRENT_USER,
+                               "Software\\Cygnus Solutions\\Cygwin\\mounts v2",
+                               0, KEY_QUERY_VALUE, &regKey);
+
        if (retVal == ERROR_SUCCESS) {
-               retVal = RegQueryValueEx(regKey, "cygdrive prefix", NULL, NULL,
-                               (LPBYTE) buf, &bufSize);
                RegCloseKey(regKey);
-               if ((retVal == ERROR_SUCCESS) && (bufSize <= MAX_PATH))
-                       cygdrive = rtrim(string(buf), "/");
+               cmd_ret const p = runCommand("mount --show-cygdrive-prefix");
+               // The output of the mount command is as follows:
+               // Prefix              Type         Flags
+               // /cygdrive           system       binmode
+               // So, we use the inner split to pass the second line to the
+               // outer split which sets cygdrive with its contents until
+               // the first blank, discarding the unneeded return value.
+               if (p.first != -1 && prefixIs(p.second, "Prefix"))
+                       split(split(p.second, '\n'), cygdrive, ' ');
        }
+
+       // Catch shutdown events.
+       SetConsoleCtrlHandler((PHANDLER_ROUTINE)terminate_handler, TRUE);
 }
 
 
@@ -193,9 +224,7 @@ docstring::size_type common_path(docstring const & p1, docstring const & p2)
                        --i;     // here was the last match
                while (i && p1[i] != '/')
                        --i;
-       } else
-               --i;
-
+       }
        return i;
 }
 
@@ -210,13 +239,23 @@ bool path_prefix_is(string & path, string const & pre, path_case how)
 {
        docstring const p1 = from_utf8(path);
        docstring const p2 = from_utf8(pre);
-       docstring::size_type i = common_path(p1, p2);
+       docstring::size_type const p1_len = p1.length();
+       docstring::size_type const p2_len = p2.length();
+       docstring::size_type common_len = common_path(p1, p2);
 
-       if (i == 0 || i + 1 != p2.length())
+       if (p2[p2_len - 1] == '/' && p1_len != p2_len)
+               ++common_len;
+
+       if (common_len != p2_len)
                return false;
 
-       if (how == CASE_ADJUSTED && !prefixIs(path, pre))
-               path = to_utf8(p2 + p1.substr(i + 1, p1.length() - i + 1));
+       if (how == CASE_ADJUSTED && !prefixIs(path, pre)) {
+               if (p1_len < common_len)
+                       path = to_utf8(p2.substr(0, p1_len));
+               else
+                       path = to_utf8(p2 + p1.substr(common_len,
+                                                       p1_len - common_len));
+       }
 
        return true;
 }