DE (FreeBSD): add fast path for xfce4 version detection

CHANGELOG.md

@@ -1,3 +1,8 @@
+# 2.0.6
+
+Features:
+* Add fast path for xfce4 version detection (DE, FreeBSD)
+
 # 2.0.5
 
 Bugfixes:
@@ -11,7 +16,7 @@ Features:
 # 2.0.4
 
 Bugfixes:
-* Fix building on 32-bit FreeBSD (Memory, BSD)
+* Fix building on 32-bit FreeBSD (Memory, FreeBSD)
 * Fix `--file-raw` doesn't work (Logo)
 
 Features:

src/common/io/io.h

@@ -12,6 +12,7 @@
     typedef HANDLE FFNativeFD;
 #else
     #include <unistd.h>
+    #include <dirent.h>
     typedef int FFNativeFD;
 #endif
 
@@ -130,4 +131,25 @@ static inline bool wrapFclose(FILE** pfile)
 }
 #define FF_AUTO_CLOSE_FILE __attribute__((__cleanup__(wrapFclose)))
 
+#ifndef _WIN32
+static inline bool wrapClosedir(DIR** pdir)
+{
+    assert(pdir);
+    if (!*pdir)
+        return false;
+    closedir(*pdir);
+    return true;
+}
+#else
+static inline bool wrapClosedir(HANDLE* pdir)
+{
+    assert(pdir);
+    if (!*pdir)
+        return false;
+    FindClose(*pdir);
+    return true;
+}
+#endif
+#define FF_AUTO_CLOSE_DIR __attribute__((__cleanup__(wrapClosedir)))
+
 #endif // FF_INCLUDED_common_io_io

src/detection/displayserver/linux/wmde.c

@@ -233,6 +233,23 @@ static void getXFCE4(FFDisplayServerResult* result)
     ffStrbufSetS(&result->dePrettyName, FF_DE_PRETTY_XFCE4);
     ffParsePropFileData("gtk-doc/html/libxfce4ui/index.html", "<div><p class=\"releaseinfo\">Version", &result->deVersion);
 
+    #ifdef __FreeBSD__
+    if(result->deVersion.length == 0)
+    {
+        FF_AUTO_CLOSE_DIR DIR* dirp = opendir("/usr/local/share/licenses/");
+        if (dirp)
+        {
+            struct dirent* entry;
+            while((entry = readdir(dirp)) != NULL)
+            {
+                if(!ffStrStartsWith(entry->d_name, "xfce-") || !isdigit(entry->d_name[5]))
+                    continue;
+                ffStrbufAppendS(&result->deVersion, &entry->d_name[5]);
+            }
+        }
+    }
+    #endif
+
     if(result->deVersion.length == 0 && instance.config.allowSlowOperations)
     {
         //This is somewhat slow