DE: move version detection code to separate files

src/detection/de/de.h

@@ -0,0 +1,5 @@
+#pragma once
+
+#include "fastfetch.h"
+
+const char* ffDetectDEVersion(const FFstrbuf* deName, FFstrbuf* result, FFDEOptions* options);

src/detection/de/de_linux.c

@@ -0,0 +1,169 @@
+#include "de.h"
+
+#include "common/parsing.h"
+#include "common/properties.h"
+#include "common/processing.h"
+#include "detection/displayserver/displayserver.h"
+
+static void getKDE(FFstrbuf* result)
+{
+    ffParsePropFileValues("/usr/share/xsessions/plasmax11.desktop", 1, (FFpropquery[]) {
+        {"X-KDE-PluginInfo-Version =", result}
+    });
+    if(result->length == 0)
+        ffParsePropFileData("xsessions/plasma.desktop", "X-KDE-PluginInfo-Version =", result);
+    if(result->length == 0)
+        ffParsePropFileData("xsessions/plasma5.desktop", "X-KDE-PluginInfo-Version =", result);
+    if(result->length == 0)
+    {
+        ffParsePropFileValues("/usr/share/wayland-sessions/plasma.desktop", 1, (FFpropquery[]) {
+            {"X-KDE-PluginInfo-Version =", result}
+        });
+    }
+    if(result->length == 0)
+        ffParsePropFileData("wayland-sessions/plasmawayland.desktop", "X-KDE-PluginInfo-Version =", result);
+    if(result->length == 0)
+        ffParsePropFileData("wayland-sessions/plasmawayland5.desktop", "X-KDE-PluginInfo-Version =", result);
+
+    if(result->length == 0 && instance.config.general.allowSlowOperations)
+    {
+        if (ffProcessAppendStdOut(result, (char* const[]){
+            "plasmashell",
+            "--version",
+            NULL
+        }) == NULL) // plasmashell 5.27.5
+            ffStrbufSubstrAfterLastC(result, ' ');
+    }
+}
+
+static void getGnome(FFstrbuf* result)
+{
+    ffParsePropFileData("gnome-shell/org.gnome.Extensions", "version :", result);
+
+    if (result->length == 0)
+    {
+        if (ffProcessAppendStdOut(result, (char* const[]){
+            "gnome-shell",
+            "--version",
+            NULL
+        }) == NULL) // GNOME Shell 44.1
+            ffStrbufSubstrAfterLastC(result, ' ');
+    }
+}
+
+static void getCinnamon(FFstrbuf* result)
+{
+    ffParsePropFileData("applications/cinnamon.desktop", "X-GNOME-Bugzilla-Version =", result);
+}
+
+static void getMate(FFstrbuf* result)
+{
+    FF_STRBUF_AUTO_DESTROY major = ffStrbufCreate();
+    FF_STRBUF_AUTO_DESTROY minor = ffStrbufCreate();
+    FF_STRBUF_AUTO_DESTROY micro = ffStrbufCreate();
+
+    ffParsePropFileDataValues("mate-about/mate-version.xml", 3, (FFpropquery[]) {
+        {"<platform>", &major},
+        {"<minor>", &minor},
+        {"<micro>", &micro}
+    });
+
+    ffParseSemver(result, &major, &minor, &micro);
+
+    if(result->length == 0 && instance.config.general.allowSlowOperations)
+    {
+        ffProcessAppendStdOut(result, (char* const[]){
+            "mate-session",
+            "--version",
+            NULL
+        });
+
+        ffStrbufSubstrAfterFirstC(result, ' ');
+        ffStrbufTrim(result, ' ');
+    }
+}
+
+static void getXFCE4(FFstrbuf* result)
+{
+    ffParsePropFileData("gtk-doc/html/libxfce4ui/index.html", "<div><p class=\"releaseinfo\">Version", result);
+
+    #ifdef __FreeBSD__
+    if(result->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, &entry->d_name[5]);
+            }
+        }
+    }
+    #endif
+
+    if(result->length == 0 && instance.config.general.allowSlowOperations)
+    {
+        //This is somewhat slow
+        ffProcessAppendStdOut(result, (char* const[]){
+            "xfce4-session",
+            "--version",
+            NULL
+        });
+
+        ffStrbufSubstrBeforeFirstC(result, '(');
+        ffStrbufSubstrAfterFirstC(result, ' ');
+        ffStrbufTrim(result, ' ');
+    }
+}
+
+static void getLXQt(FFstrbuf* result)
+{
+    ffParsePropFileData("gconfig/lxqt.pc", "Version:", result);
+
+    if(result->length == 0)
+        ffParsePropFileData("cmake/lxqt/lxqt-config.cmake", "set ( LXQT_VERSION", result);
+    if(result->length == 0)
+        ffParsePropFileData("cmake/lxqt/lxqt-config-version.cmake", "set ( PACKAGE_VERSION", result);
+
+    if(result->length == 0 && instance.config.general.allowSlowOperations)
+    {
+        //This is really, really, really slow. Thank you, LXQt developers
+        ffProcessAppendStdOut(result, (char* const[]){
+            "lxqt-session",
+            "-v",
+            NULL
+        });
+
+        result->length = 0; //don't set '\0' byte
+        ffParsePropLines(result->chars , "liblxqt", result);
+    }
+}
+
+static void getBudgie(FFstrbuf* result)
+{
+    ffParsePropFileData("budgie/budgie-version.xml", "<str>", result);
+}
+
+const char* ffDetectDEVersion(const FFstrbuf* deName, FFstrbuf* result, FF_MAYBE_UNUSED FFDEOptions* options)
+{
+    if (ffStrbufEqualS(deName, FF_DE_PRETTY_PLASMA))
+        getKDE(result);
+    else if (ffStrbufEqualS(deName, FF_DE_PRETTY_GNOME) || ffStrbufEqualS(deName, FF_DE_PRETTY_GNOME))
+        getGnome(result);
+    else if (ffStrbufEqualS(deName, FF_DE_PRETTY_CINNAMON))
+        getCinnamon(result);
+    else if (ffStrbufEqualS(deName, FF_DE_PRETTY_XFCE4))
+        getXFCE4(result);
+    else if (ffStrbufEqualS(deName, FF_DE_PRETTY_MATE))
+        getMate(result);
+    else if (ffStrbufEqualS(deName, FF_DE_PRETTY_LXQT))
+        getLXQt(result);
+    else if (ffStrbufEqualS(deName, FF_DE_PRETTY_BUDGIE))
+        getBudgie(result);
+    else
+        return "Unsupported DE";
+    return NULL;
+}

src/detection/de/de_nosupport.c

@@ -0,0 +1,6 @@
+#include "de.h"
+
+const char* ffDetectDEVersion(FF_MAYBE_UNUSED const FFstrbuf* deName, FF_MAYBE_UNUSED FFstrbuf* result, FF_MAYBE_UNUSED FFDEOptions* options)
+{
+    return "Not supported on this platform";
+}