build: generate various resources at build run, not build graph

This is stomping towards minimizing our build.zig dependencies so that
it can be cached more often. Right now, touching almost any file in the
project forces the build.zig to rebuild which is destroying my
productivity.

1 files changed, 117 insertions, 0 deletions

diff --git a/src/extra/vim.zig b/src/extra/vim.zig
new file mode 100644
index 000000000..e5261cd74
--- /dev/null
+++ b/src/extra/vim.zig
@@ -0,0 +1,117 @@
+const std = @import("std");
+const Config = @import("../config/Config.zig");
+
+/// This is the associated Vim file as named by the variable.
+pub const syntax = comptimeGenSyntax();
+pub const ftdetect =
+    \\" Vim filetype detect file
+    \\" Language: Ghostty config file
+    \\" Maintainer: Ghostty <https://github.com/ghostty-org/ghostty>
+    \\"
+    \\" THIS FILE IS AUTO-GENERATED
+    \\
+    \\au BufRead,BufNewFile */ghostty/config,*/ghostty/themes/* set ft=ghostty
+    \\
+;
+pub const ftplugin =
+    \\" Vim filetype plugin file
+    \\" Language: Ghostty config file
+    \\" Maintainer: Ghostty <https://github.com/ghostty-org/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<'
+    \\
+    \\if !exists('current_compiler')
+    \\  compiler ghostty
+    \\  let b:undo_ftplugin .= " makeprg< errorformat<"
+    \\endif
+    \\
+;
+pub const compiler =
+    \\" Vim compiler file
+    \\" Language: Ghostty config file
+    \\" Maintainer: Ghostty <https://github.com/ghostty-org/ghostty>
+    \\"
+    \\" THIS FILE IS AUTO-GENERATED
+    \\
+    \\if exists("current_compiler")
+    \\  finish
+    \\endif
+    \\let current_compiler = "ghostty"
+    \\
+    \\CompilerSet makeprg=ghostty\ +validate-config\ --config-file=%:S
+    \\CompilerSet errorformat=%f:%l:%m,%m
+    \\
+;
+
+/// 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());
+        const final = buf;
+        return final[0..stream.getWritten().len];
+    }
+}
+
+/// 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/ghostty-org/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 iskeyword @,48-57,-
+        \\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 /^\s*#.*/ contains=@Spell
+        \\
+        \\hi def link ghosttyConfigComment Comment
+        \\hi def link ghosttyConfigKeyword Keyword
+        \\
+        \\let &cpo = s:cpo_save
+        \\unlet s:cpo_save
+        \\
+    );
+}
+
+test {
+    _ = syntax;
+}