config: generate vim configs at comptime

src/config/vim.zig

@@ -0,0 +1,85 @@
+const std = @import("std");
+const Config = @import("Config.zig");
+
+/// This is the associated Vim file as named by the variable.
+pub const syntax = comptimeGenSyntax();
+pub const ftdetect = "au BufRead,BufNewFile */.config/ghostty/config set ft=ghostty\n";
+pub const ftplugin =
+    \\" Vim filetype plugin file
+    \\" Language: Ghostty config file
+    \\" Maintainer: Ghostty <https://github.com/mitchellh/ghostty>
+    \\"
+    \\" THIS FILE IS AUTO-GENERATED
+    \\
+    \\if exists('b:did_ftplugin')
+    \\  finish
+    \\endif
+    \\let b:did_ftplugin = 1
+    \\
+    \\setlocal commentstring=#%s
+    \\setlocal iskeyword+=-
+    \\
+    \\" Use syntax keywords for completion
+    \\setlocal omnifunc=syntaxcomplete#Complete
+    \\
+    \\let b:undo_ftplugin = 'setl cms< isk< ofu<'
+    \\
+;
+
+/// Generates the syntax file at comptime.
+fn comptimeGenSyntax() []const u8 {
+    comptime {
+        var counting_writer = std.io.countingWriter(std.io.null_writer);
+        try writeSyntax(&counting_writer.writer());
+
+        var buf: [counting_writer.bytes_written]u8 = undefined;
+        var stream = std.io.fixedBufferStream(&buf);
+        try writeSyntax(stream.writer());
+        return stream.getWritten();
+    }
+}
+
+/// Writes the syntax file to the given writer.
+fn writeSyntax(writer: anytype) !void {
+    try writer.writeAll(
+        \\" Vim syntax file
+        \\" Language: Ghostty config file
+        \\" Maintainer: Ghostty <https://github.com/mitchellh/ghostty>
+        \\"
+        \\" THIS FILE IS AUTO-GENERATED
+        \\
+        \\if exists('b:current_syntax')
+        \\  finish
+        \\endif
+        \\
+        \\let b:current_syntax = 'ghostty'
+        \\
+        \\let s:cpo_save = &cpo
+        \\set cpo&vim
+        \\
+        \\syn keyword ghosttyConfigKeyword
+    );
+
+    const config_fields = @typeInfo(Config).Struct.fields;
+    inline for (config_fields) |field| {
+        if (field.name[0] == '_') continue;
+        try writer.print("\n\t\\ {s}", .{field.name});
+    }
+
+    try writer.writeAll(
+        \\
+        \\
+        \\syn match ghosttyConfigComment /#.*/ contains=@Spell
+        \\
+        \\hi def link ghosttyConfigComment Comment
+        \\hi def link ghosttyConfigKeyword Keyword
+        \\
+        \\let &cpo = s:cpo_save
+        \\unlet s:cpo_save
+        \\
+    );
+}
+
+test {
+    _ = syntax;
+}