From 54ea9c23864e1aa5a0314a9e05362528358ee881 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=8E=E9=80=9A=E6=B4=B2?= <carter.li@eoitek.com>
Date: Wed, 11 Jan 2023 13:58:59 +0800
Subject: [PATCH] TerminalFont: support WezTerm font detection

---
 CHANGELOG.md                                  |  1 +
 src/detection/terminalfont/terminalfont.c     | 30 +++++++++++++++++++
 .../terminalshell/terminalshell_linux.c       |  2 ++
 3 files changed, 33 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4809204dc..5c49019b0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ Features:
 * Add `Battery` module support for FreeBSD
 * Add `--disk-show-unknown` option for Disk module
 * Detect terminal version when available
+* Support `WezTerm` terminal font detection (requires [`wezterm` executable](https://wezfurlong.org/wezterm/cli/general.html) being available)
 
 Logos:
 * Raspbian (@IamNoRobot, #373)
diff --git a/src/detection/terminalfont/terminalfont.c b/src/detection/terminalfont/terminalfont.c
index 5716b720d..a4a049276 100644
--- a/src/detection/terminalfont/terminalfont.c
+++ b/src/detection/terminalfont/terminalfont.c
@@ -320,6 +320,34 @@ static bool detectKitty(const FFinstance* instance, FFTerminalFontResult* result
     return true;
 }
 
+static bool detectWezterm(FF_UNUSED_PARAM const FFinstance* instance, FFTerminalFontResult* result)
+{
+    FF_STRBUF_AUTO_DESTROY fontName;
+    ffStrbufInit(&fontName);
+
+    ffStrbufSetS(&result->error, ffProcessAppendStdOut(&fontName, (char* const[]){
+        "wezterm",
+        "ls-fonts",
+        "--text",
+        "a",
+        NULL
+    }));
+    if(result->error.length)
+        return false;
+
+    //LeftToRight
+    // 0 a    \u{61}       x_adv=7  cells=1  glyph=a,180  wezterm.font("JetBrains Mono", {weight="Regular", stretch="Normal", style="Normal"})
+    //                                      <built-in>, BuiltIn
+    ffStrbufSubstrAfterFirstC(&fontName, '"');
+    ffStrbufSubstrBeforeFirstC(&fontName, '"');
+
+    if(!fontName.length)
+        return false;
+
+    ffFontInitCopy(&result->font, fontName.chars);
+    return true;
+}
+
 void ffDetectTerminalFontPlatform(const FFinstance* instance, const FFTerminalShellResult* terminalShell, FFTerminalFontResult* terminalFont);
 
 static bool detectTerminalFontCommon(const FFinstance* instance, const FFTerminalShellResult* terminalShell, FFTerminalFontResult* terminalFont)
@@ -328,6 +356,8 @@ static bool detectTerminalFontCommon(const FFinstance* instance, const FFTermina
         detectAlacritty(instance, terminalFont);
     else if(ffStrbufIgnCaseCompS(&terminalShell->terminalProcessName, "kitty") == 0)
         detectKitty(instance, terminalFont);
+    else if(ffStrbufIgnCaseCompS(&terminalShell->terminalProcessName, "wezterm-gui") == 0)
+        detectWezterm(instance, terminalFont);
     else if(ffStrbufStartsWithIgnCaseS(&terminalShell->terminalExe, "/dev/tty"))
         detectTTY(terminalFont);
 
diff --git a/src/detection/terminalshell/terminalshell_linux.c b/src/detection/terminalshell/terminalshell_linux.c
index fb3ad0a76..510897287 100644
--- a/src/detection/terminalshell/terminalshell_linux.c
+++ b/src/detection/terminalshell/terminalshell_linux.c
@@ -375,6 +375,8 @@ const FFTerminalShellResult* ffDetectTerminalShell(const FFinstance* instance)
         ffStrbufInitS(&result.terminalPrettyName, "Apple Terminal");
     else if(ffStrbufEqualS(&result.terminalProcessName, "WarpTerminal"))
         ffStrbufInitS(&result.terminalPrettyName, "Warp");
+    else if(ffStrbufEqualS(&result.terminalProcessName, "wezterm-gui"))
+        ffStrbufInitS(&result.terminalPrettyName, "WezTerm");
     else if(strncmp(result.terminalExeName, result.terminalProcessName.chars, result.terminalProcessName.length) == 0) // if exeName starts with processName, print it. Otherwise print processName
         ffStrbufInitS(&result.terminalPrettyName, result.terminalExeName);
     else