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地圖 (Jido) is a lightweight Unix TUI file explorer designed for speed and simplicity.
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123456789101112131415161718const std = @import("std");
/// Callers owns memory returned.pub fn getGitBranch(io: std.Io, alloc: std.mem.Allocator, dir: std.Io.Dir) !?[]const u8 { var file = try dir.openFile(io, ".git/HEAD", .{}); defer file.close(io);
var buf: [1024]u8 = undefined; var file_reader = file.reader(io, &.{}); const bytes = file_reader.interface.readSliceShort(&buf) catch 0; if (bytes == 0) return null;
const preamble = "ref: refs/heads/"; if (bytes < preamble.len) return null;
return try alloc.dupe(u8, buf[preamble.len..bytes]);}