TerminalFont: support Windows Terminal on WSL

.github/workflows/push.yml

@@ -17,7 +17,7 @@ jobs:
         uses: actions/checkout@v3
 
       - name: install required packages
-        run: sudo apt-get update && sudo apt-get install -y libpci-dev libvulkan-dev libwayland-dev libxrandr-dev libxcb-randr0-dev libdconf-dev libdbus-1-dev libmagickcore-dev libxfconf-0-dev libsqlite3-dev rpm librpm-dev libzstd-dev libegl-dev libglx-dev libosmesa6-dev ocl-icd-opencl-dev
+        run: sudo apt-get update && sudo apt-get install -y libpci-dev libvulkan-dev libwayland-dev libxrandr-dev libxcb-randr0-dev libdconf-dev libdbus-1-dev libmagickcore-dev libxfconf-0-dev libsqlite3-dev rpm librpm-dev libzstd-dev libegl-dev libglx-dev libosmesa6-dev ocl-icd-opencl-dev libcjson-dev
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v2

CMakeLists.txt

@@ -47,6 +47,7 @@ cmake_dependent_option(ENABLE_GLX "Enable glx" ON "LINUX OR BSD" OFF)
 cmake_dependent_option(ENABLE_OSMESA "Enable osmesa" ON "LINUX OR BSD" OFF)
 cmake_dependent_option(ENABLE_OPENCL "Enable opencl" ON "LINUX OR BSD" OFF)
 cmake_dependent_option(ENABLE_LIBPLIST "Enable libplist" ON "APPLE" OFF)
+cmake_dependent_option(ENABLE_LIBCJSON "Enable libcjson" ON "LINUX" OFF)
 
 option(BUILD_TESTS "Build tests" OFF) # Also create test executables
 option(SET_TWEAK "Add tweak to project version" ON) # This is set to off by github actions for release builds
@@ -375,6 +376,7 @@ ff_lib_enable(GLX glx)
 ff_lib_enable(OSMESA osmesa)
 ff_lib_enable(OPENCL OpenCL)
 ff_lib_enable(LIBPLIST libplist-2.0)
+ff_lib_enable(LIBCJSON libcjson)
 
 if(APPLE)
     target_link_libraries(libfastfetch

README.md

@@ -45,6 +45,7 @@ The following libraries are used if present at runtime:
 * [`libsqlite3`](https://www.sqlite.org/index.html): Needed for pkg & rpm package count.
 * [`librpm`](http://rpm.org/): Slower fallback for rpm package count. Needed on openSUSE.
 * [`libplist`](https://github.com/libimobiledevice/libplist): Binary `plist` file parser ( macOS ). Needed for iTerm2 Terminal font and WM Theme.
+* [`libcJSON`](https://github.com/DaveGamble/cJSON): Needed for Windows Terminal font ( WSL ).
 
 ## Support status
 All categories not listed here should work without needing a specific implementation.
@@ -81,7 +82,7 @@ KDE Plasma, Gnome, Cinnamon, Mate, XFCE4, LXQt
 
 ##### Terminal fonts
 ```
-Konsole, Gnome Terminal, Tilix, XFCE4 Terminal, Alacritty, LXTerminal, iTerm2, Apple Terminal, TTY
+Konsole, Gnome Terminal, Tilix, XFCE4 Terminal, Alacritty, LXTerminal, iTerm2, Apple Terminal, TTY, Windows Terminal
 ```
 
 ## Building

src/common/init.c

@@ -218,6 +218,7 @@ static void defaultConfig(FFinstance* instance)
     ffStrbufInitA(&instance->config.libOSMesa, 0);
     ffStrbufInitA(&instance->config.libOpenCL, 0);
     ffStrbufInitA(&instance->config.libplist, 0);
+    ffStrbufInitA(&instance->config.libcJSON, 0);
 
     instance->config.titleFQDN = false;
 

src/data/config_user.txt

@@ -324,3 +324,4 @@
 #--lib-osmesa /usr/lib/libOSMesa.so
 #--lib-opencl /usr/lib/libOpenCL.so
 #--lib-plist /usr/local/bin/libplist-2.0.dylib
+#--lib-cjson /usr/lib/libcjson.so

src/data/help.txt

@@ -85,6 +85,7 @@ Library options: Set the path of a library to load
     --lib-osmesa <path>
     --lib-opencl <path>
     --lib-plist <path>
+    --lib-cjson <path>
 
 Module specific options:
     --title-fqdn <?value>:        Sets if the title should use fully qualified domain name. Default is false.

src/detection/terminalShell.c

@@ -153,6 +153,14 @@ static void getTerminalFromEnv(FFTerminalShellResult* result)
     if(!ffStrSet(term))
         term = getenv("TERM_PROGRAM");
 
+    //We are in WSL but not in Windows Terminal
+    if(!ffStrSet(term) && (
+        getenv("WSLENV") != NULL ||
+        getenv("WSL_DISTRO") != NULL ||
+        getenv("WSL_INTEROP") != NULL
+    ))
+        term = "conhost";
+
     //Normal Terminal
     if(!ffStrSet(term))
         term = getenv("TERM");

src/detection/terminalfont/terminalfont_apple.c

@@ -32,8 +32,13 @@ static const char* iterm2ParsePList(const FFinstance* instance, const FFstrbuf*
     else
         ffplist_from_xml(content->chars, content->length, &root_node);
 
+    const char* error = NULL;
+
     if(root_node == NULL)
-        return "parsing iTerm preference file failed";
+    {
+        error = "parsing iTerm preference file failed";
+        goto exit;
+    }
 
     plist_t bookmarks = ffplist_access_path(root_node, 1, "New Bookmarks");
 
@@ -50,20 +55,22 @@ static const char* iterm2ParsePList(const FFinstance* instance, const FFstrbuf*
 
     if(item == NULL)
     {
-        ffplist_free(root_node);
-        return "find profile bookmark failed";
+        error = "find profile bookmark failed";
+        goto exit;
     }
 
     item = ffplist_dict_get_item(item, "Normal Font");
     if (item == NULL)
     {
-        ffplist_free(root_node);
-        return "find Normal Font key failed";
+        error = "find Normal Font key failed";
+        goto exit;
     }
 
     ffFontInitWithSpace(&terminalFont->font, ffplist_get_string_ptr(item, NULL));
 
+exit:
     ffplist_free(root_node);
+    dlclose(libplist);
     return NULL;
 }
 

src/detection/terminalfont/terminalfont_linux.c

@@ -140,6 +140,178 @@ static void detectXFCETerminal(const FFinstance* instance, FFTerminalFontResult*
     ffStrbufDestroy(&useSysFont);
 }
 
+#ifdef FF_HAVE_LIBCJSON
+
+#include "common/library.h"
+#include "common/processing.h"
+
+#include <cjson/cJSON.h>
+#include <stdlib.h>
+
+typedef struct CJSONData
+{
+    FF_LIBRARY_SYMBOL(cJSON_Parse)
+    FF_LIBRARY_SYMBOL(cJSON_IsObject)
+    FF_LIBRARY_SYMBOL(cJSON_GetObjectItemCaseSensitive)
+    FF_LIBRARY_SYMBOL(cJSON_IsString)
+    FF_LIBRARY_SYMBOL(cJSON_GetStringValue)
+    FF_LIBRARY_SYMBOL(cJSON_IsNumber)
+    FF_LIBRARY_SYMBOL(cJSON_GetNumberValue)
+    FF_LIBRARY_SYMBOL(cJSON_IsArray)
+    FF_LIBRARY_SYMBOL(cJSON_Delete)
+} CJSONData;
+
+static const char* detectWTProfile(CJSONData* cjsonData, cJSON* profile, FFstrbuf* name, int* size)
+{
+    if(!cjsonData->ffcJSON_IsObject(profile))
+        return "cJSON_IsObject(profile) returns false";
+
+    cJSON* font = cjsonData->ffcJSON_GetObjectItemCaseSensitive(profile, "font");
+    if(!cjsonData->ffcJSON_IsObject(font))
+        return "cJSON_IsObject(font) returns false";
+
+    if(name->length == 0)
+    {
+        cJSON* pface = cjsonData->ffcJSON_GetObjectItemCaseSensitive(font, "face");
+        if(cjsonData->ffcJSON_IsString(pface))
+            ffStrbufAppendS(name, cjsonData->ffcJSON_GetStringValue(pface));
+    }
+    if(*size < 0)
+    {
+        cJSON* psize = cjsonData->ffcJSON_GetObjectItemCaseSensitive(font, "size");
+        if(cjsonData->ffcJSON_IsNumber(psize))
+            *size = (int)cjsonData->ffcJSON_GetNumberValue(psize);
+    }
+    return NULL;
+}
+
+static const char* detectFromWTImpl(const FFinstance* instance, FFstrbuf* content, FFstrbuf* name, int* size)
+{
+    CJSONData cjsonData;
+
+    FF_LIBRARY_LOAD(libcjson, &instance->config.libcJSON, "dlopen libcjson failed", "libcjson"FF_LIBRARY_EXTENSION, 1)
+    FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(libcjson, cjsonData, cJSON_Parse)
+    FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(libcjson, cjsonData, cJSON_IsObject)
+    FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(libcjson, cjsonData, cJSON_GetObjectItemCaseSensitive)
+    FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(libcjson, cjsonData, cJSON_IsString)
+    FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(libcjson, cjsonData, cJSON_GetStringValue)
+    FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(libcjson, cjsonData, cJSON_IsNumber)
+    FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(libcjson, cjsonData, cJSON_GetNumberValue)
+    FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(libcjson, cjsonData, cJSON_IsArray)
+    FF_LIBRARY_LOAD_SYMBOL_VAR_MESSAGE(libcjson, cjsonData, cJSON_Delete)
+
+    const char* error = NULL;
+
+    cJSON* root = cjsonData.ffcJSON_Parse(content->chars);
+    if(!cjsonData.ffcJSON_IsObject(root))
+    {
+        error = "cJSON_Parse() failed";
+        goto exit;
+    }
+
+    cJSON* profiles = cjsonData.ffcJSON_GetObjectItemCaseSensitive(root, "profiles");
+    if(!cjsonData.ffcJSON_IsObject(profiles))
+    {
+        error = "cJSON_GetObjectItemCaseSensitive(root, \"profiles\") failed";
+        goto exit;
+    }
+
+    FFstrbuf wtProfileId;
+    ffStrbufInitS(&wtProfileId, getenv("WT_PROFILE_ID"));
+    ffStrbufTrim(&wtProfileId, '\'');
+    if(wtProfileId.length > 0)
+    {
+        cJSON* list = cjsonData.ffcJSON_GetObjectItemCaseSensitive(profiles, "list");
+        if(cjsonData.ffcJSON_IsArray(list))
+        {
+            cJSON* profile;
+            cJSON_ArrayForEach(profile, list)
+            {
+                if(!cjsonData.ffcJSON_IsObject(profile))
+                    continue;
+                cJSON* guid = cjsonData.ffcJSON_GetObjectItemCaseSensitive(profile, "guid");
+                if(!cjsonData.ffcJSON_IsString(guid))
+                    continue;
+                if(ffStrbufCompS(&wtProfileId, cjsonData.ffcJSON_GetStringValue(guid)) == 0)
+                {
+                    detectWTProfile(&cjsonData, profile, name, size);
+                    break;
+                }
+            }
+        }
+    }
+    ffStrbufDestroy(&wtProfileId);
+
+    cJSON* defaults = cjsonData.ffcJSON_GetObjectItemCaseSensitive(profiles, "defaults");
+    detectWTProfile(&cjsonData, defaults, name, size);
+
+    if(name->length == 0)
+        ffStrbufSetS(name, "Cascadia Mono");
+    if(*size < 0)
+        *size = 12;
+
+exit:
+    cjsonData.ffcJSON_Delete(root);
+    dlclose(libcjson);
+    return error;
+}
+
+static void detectFromWindowsTeriminal(const FFinstance* instance, FFTerminalFontResult* terminalFont)
+{
+    //https://learn.microsoft.com/en-us/windows/terminal/install#settings-json-file
+    FFstrbuf json;
+    ffStrbufInit(&json);
+    const char* error;
+    error = ffProcessAppendStdOut(&json, (char* const[]) {
+        "cmd.exe",
+        "/c",
+        //print the file content directly, so we don't need to handle the difference of Windows and POSIX path
+        "if exist %LOCALAPPDATA%\\Packages\\Microsoft.WindowsTerminal_8wekyb3d8bbwe\\LocalState\\settings.json "
+        "( type %LOCALAPPDATA%\\Packages\\Microsoft.WindowsTerminal_8wekyb3d8bbwe\\LocalState\\settings.json ) "
+        "else if exist %LOCALAPPDATA%\\Packages\\Microsoft.WindowsTerminalPreview_8wekyb3d8bbwe\\LocalState\\settings.json "
+        "( type %LOCALAPPDATA%\\Packages\\Microsoft.WindowsTerminalPreview_8wekyb3d8bbwe\\LocalState\\settings.json ) "
+        "else if exist \"%LOCALAPPDATA%\\Microsoft\\Windows Terminal\\settings.json\" "
+        "( type %LOCALAPPDATA%\\Microsoft\\Windows Terminal\\settings.json ) "
+        "else ( call )",
+        NULL
+    });
+    if(error)
+    {
+        ffStrbufAppendS(&terminalFont->error, error);
+        ffStrbufDestroy(&json);
+        return;
+    }
+    ffStrbufTrimRight(&json, '\n');
+    if(json.length == 0)
+    {
+        ffStrbufAppendS(&terminalFont->error, "Cannot find file \"settings.json\"");
+        ffStrbufDestroy(&json);
+        return;
+    }
+
+    FFstrbuf name;
+    ffStrbufInit(&name);
+    int size = -1;
+    detectFromWTImpl(instance, &json, &name, &size);
+    ffStrbufDestroy(&json);
+
+    char sizeStr[16];
+    snprintf(sizeStr, sizeof(sizeStr), "%d", size);
+    ffFontInitValues(&terminalFont->font, name.chars, sizeStr);
+
+    ffStrbufDestroy(&name);
+}
+
+#else
+
+static void detectFromWindowsTeriminal(const FFinstance* instance, FFTerminalFontResult* terminalFont)
+{
+    FF_UNUSED(instance, terminalFont);
+    ffStrbufAppendS(&terminalFont->error, "fastfetch is built without libcjson support");
+}
+
+#endif
+
 void ffDetectTerminalFontPlatform(const FFinstance* instance, const FFTerminalShellResult* terminalShell, FFTerminalFontResult* terminalFont)
 {
     if(ffStrbufIgnCaseCompS(&terminalShell->terminalProcessName, "konsole") == 0)
@@ -152,4 +324,6 @@ void ffDetectTerminalFontPlatform(const FFinstance* instance, const FFTerminalSh
         detectFromGSettings(instance, "/com/gexperts/Tilix/profiles/", "com.gexperts.Tilix.ProfilesList", "com.gexperts.Tilix.Profile", terminalFont);
     else if(ffStrbufIgnCaseCompS(&terminalShell->terminalProcessName, "gnome-terminal-") == 0)
         detectFromGSettings(instance, "/org/gnome/terminal/legacy/profiles:/:", "org.gnome.Terminal.ProfilesList", "org.gnome.Terminal.Legacy.Profile", terminalFont);
+    else if(ffStrbufIgnCaseCompS(&terminalShell->terminalProcessName, "Windows Terminal") == 0)
+        detectFromWindowsTeriminal(instance, terminalFont);
 }

src/fastfetch.c

@@ -1246,6 +1246,8 @@ static void parseOption(FFinstance* instance, FFdata* data, const char* key, con
         optionParseString(key, value, &instance->config.libOpenCL);
     else if(strcasecmp(key, "--lib-plist") == 0)
         optionParseString(key, value, &instance->config.libplist);
+    else if(strcasecmp(key, "--lib-cjson") == 0)
+        optionParseString(key, value, &instance->config.libcJSON);
 
     //////////////////
     //Module options//

src/fastfetch.h

@@ -150,6 +150,7 @@ typedef struct FFconfig
     FFstrbuf libOSMesa;
     FFstrbuf libOpenCL;
     FFstrbuf libplist;
+    FFstrbuf libcJSON;
 
     bool titleFQDN;