tiny.syn.fromPath

1/// A caller that opens a file picks the language from its path. The call returns the language for a2/// file path, or null when neither its extension nor its file name is known. The lookup tries the3/// extension first, ignoring letter case, so `src/main.rs` gives Rust and `src/app.tsx` gives4/// TypeScript. A file named `.chic` counts as Chiclet. Without a known extension the lookup tries5/// the whole file name through `fromName`, so a file called `Makefile` gives Make. It then knows a6/// few names with no extension: `Dockerfile` as shell, `GNUmakefile` and `BSDmakefile` as Make, and7/// shell start-up files such as `.bashrc`, `.zshrc` and `.profile` as shell. The lookup reads only8/// the path text and never opens the file.9pub fn fromPath(path: []const u8) ?Language {10    const extension = std.fs.path.extension(path);11    const basename = std.fs.path.basename(path);12    if (extension.len > 1) {13        if (fromExtension(extension[1..])) |language| return language;14    }15    if (eq(basename, ".chic")) return .chiclet;16    if (fromName(basename)) |language| return language;17    if (eq(basename, "Dockerfile")) return .shell;18    if (eq(basename, "Makefile") or eq(basename, "GNUmakefile") or eq(basename, "BSDmakefile")) return .make;19    if (eq(basename, ".bashrc") or eq(basename, ".zshrc") or eq(basename, ".profile") or eq(basename, ".bash_profile") or eq(basename, ".zprofile")) return .shell;20    if (eq(basename, "flake.nix")) return .nix;21    return null;22}

1pub const fromPath = language.fromPath;