feat: Added table viewer.

.envrc

@@ -1,3 +1,4 @@
 use flake
 
-export PATH=".:/home/spencer/github.com/envr-zig/deps/zig:/home/spencer/github.com/envr-zig/deps/zls:$PATH"
+ROOT="/home/spencer/Desktop/envr"
+export PATH=".:${ROOT}/deps/zig:${ROOT}/deps/zls:$PATH"

.gitignore

@@ -1,5 +1,6 @@
 # dev env
 .direnv
+/.env
 
 # dependencies
 deps

src/Db.zig

@@ -46,11 +46,27 @@ pub fn open(
             defer private_keys.deinit(gpa);
 
             for (opts.config.keys) |key| {
-                private_keys.appendAssumeCapacity(key.private);
+                // FIXME: cheating here
+                if (std.mem.startsWith(u8, key.private, "~/")) {
+                    const key_path = try std.fs.path.join(gpa, &.{
+                        opts.home,
+                        key.private[2..],
+                    });
+                    private_keys.appendAssumeCapacity(key_path);
+                    // defer gpa.free(key_path);
+                } else {
+                    private_keys.appendAssumeCapacity(key.private);
+                }
             }
 
             // TODO: Pass key(s) from Config
             try age.decrypt(io, gpa, private_keys.items, db_path, tmp_db_path);
+
+            for (opts.config.keys, 0..) |key, i| {
+                if (std.mem.startsWith(u8, key.private, "~/")) {
+                    gpa.free(private_keys.items[i]);
+                }
+            }
         }
     }
 
@@ -173,7 +189,7 @@ const EnvFile = struct {
     sha256: []const u8,
     contents: []const u8,
 
-    fn deinit(self: *EnvFile, alloc: std.mem.Allocator) void {
+    pub fn deinit(self: *EnvFile, alloc: std.mem.Allocator) void {
         alloc.free(self.path);
         alloc.free(self.remotes);
         alloc.free(self.sha256);

src/root.zig

@@ -2,11 +2,11 @@
 const std = @import("std");
 const Io = std.Io;
 
-const comma = @import("comma");
-const Command = comma.Command;
+const Command = @import("comma").Command;
 
 const Config = @import("Config.zig");
 const Db = @import("Db.zig");
+const tabula = @import("./tabula.zig");
 
 pub const root: Command = .new(.{
     .name = "envr",
@@ -80,15 +80,19 @@ pub fn list(
         .tmp = tmp,
     });
 
-    _ = try out.write("Path\n");
     const files = try db.list(arena);
-    for (files) |file| {
-        // TODO: Table printer
-        try out.print("{s}\n", .{file.path});
-    }
+    defer arena.free(files);
+
+    const table = tabula.Table(@TypeOf(files[0]));
+    try out.print("{f}", .{table});
     try out.flush();
 
-    return db.close(io, arena); // TODO: Defer this
+    try db.close(io, arena); // TODO: Defer this
+
+    // TODO: Is this bad?
+    for (files) |file| {
+        @constCast(&file).deinit(arena);
+    }
 }
 
 test {
@@ -129,3 +133,78 @@ test "parse unknown" {
 
     try std.testing.expectEqual(.unknown, cmd);
 }
+
+test "list returns a table" {
+    const io = std.testing.io;
+    const gpa = std.testing.allocator;
+
+    var tmp_dir = std.testing.tmpDir(.{});
+    defer tmp_dir.cleanup();
+
+    try tmp_dir.dir.createDir(io, "home", .default_dir);
+    try tmp_dir.dir.createDir(io, "home/.envr", .default_dir);
+    try tmp_dir.dir.createDir(io, "home/.ssh", .default_dir);
+    try tmp_dir.dir.createDir(io, "tmp", .default_dir);
+
+    const tmp_dir_path = try tmp_dir.dir.realPathFileAlloc(io, ".", gpa);
+    defer gpa.free(tmp_dir_path);
+
+    const home = try std.fs.path.join(gpa, &.{ tmp_dir_path, "home" });
+    defer gpa.free(home);
+    const tmp = try std.fs.path.join(gpa, &.{ tmp_dir_path, "tmp" });
+    defer gpa.free(tmp);
+
+    try std.Io.Dir.cwd().copyFile(
+        "fixtures/encrypted-single-file.db.age",
+        tmp_dir.dir,
+        "home/.envr/data.age",
+        io,
+        .{},
+    );
+
+    try std.Io.Dir.cwd().copyFile(
+        "fixtures/default_config.json",
+        tmp_dir.dir,
+        "home/.envr/config.json",
+        io,
+        .{},
+    );
+
+    try std.Io.Dir.cwd().copyFile(
+        "fixtures/insecure-test-key",
+        tmp_dir.dir,
+        "home/.ssh/id_ed25519",
+        io,
+        .{},
+    );
+
+    try std.Io.Dir.cwd().copyFile(
+        "fixtures/insecure-test-key.pub",
+        tmp_dir.dir,
+        "home/.ssh/id_ed25519.pub",
+        io,
+        .{},
+    );
+
+    var out: std.Io.Writer.Allocating = .init(gpa);
+    defer out.deinit();
+
+    // Run Test
+
+    try list(
+        io,
+        std.testing.allocator,
+        &out.writer,
+        home,
+        tmp,
+    );
+
+    try std.testing.expectEqualStrings(
+        \\┌────────────────────────┐
+        \\│ path                   │
+        \\├────────────────────────┤
+        \\│ ~/project/.env.example │
+        \\└────────────────────────┘
+        \\
+    , try out.toOwnedSlice());
+}

src/tabula.zig

@@ -0,0 +1,309 @@
+const std = @import("std");
+
+const hor = "─";
+const tl = "┌";
+const tm = "┬";
+const tr = "┐";
+const sep = "│";
+const ml = "├";
+const mm = "┼";
+const mr = "┤";
+const bl = "└";
+const bm = "┴";
+const br = "┘";
+
+/// Prepare a TUI table to be written to a writer.
+pub fn Table(
+    comptime T: type,
+    comptime fields: std.EnumSet(std.meta.FieldEnum(T)),
+) type {
+    return struct {
+        items: []const T,
+
+        pub fn format(self: @This(), writer: *std.Io.Writer) !void {
+            const max_column_widths = determine_col_widths(T, self.items);
+
+            try header(T, fields, &max_column_widths, writer);
+
+            // Print body
+            for (self.items) |item| {
+                _ = try writer.write(sep);
+
+                comptime var itr = fields.iterator();
+                comptime var i: usize = 0;
+                inline while (comptime itr.next()) |c| : (i += 1) {
+                    _ = try writer.write(" ");
+                    try write_aligned(writer, @field(item, @tagName(c)), max_column_widths[i], .left);
+                    try writer.print(" {s}", .{sep});
+                }
+
+                _ = try writer.write("\n");
+            }
+
+            // Print post-body
+            {
+                _ = try writer.write(bl);
+
+                var itr = fields.iterator();
+                var i: usize = 0;
+                while (itr.next()) |_| : (i += 1) {
+                    if (i > 0) {
+                        _ = try writer.write(bm);
+                    }
+
+                    const padding = max_column_widths[i] + 2;
+                    for (0..padding) |_| {
+                        _ = try writer.write(hor);
+                    }
+                }
+
+                _ = try writer.write(br);
+                _ = try writer.write("\n");
+            }
+        }
+    };
+}
+
+fn determine_col_widths(
+    T: type,
+    items: []const T,
+) [@typeInfo(T).@"struct".fields.len]usize {
+    const all_fields = @typeInfo(T).@"struct".fields;
+
+    var max_column_widths: [all_fields.len]usize = @splat(0);
+    for (items) |item| {
+        inline for (all_fields, 0..) |field, i| {
+            // TODO: Get str len of item
+            const value_len = @field(item, field.name).len;
+            max_column_widths[i] = @max(
+                max_column_widths[i],
+                field.name.len,
+                value_len,
+            );
+        }
+    }
+
+    return max_column_widths;
+}
+
+// Print the header of a table
+fn header(
+    T: type,
+    comptime fields: std.EnumSet(std.meta.FieldEnum(T)),
+    max_column_widths: []const usize,
+    writer: *std.Io.Writer,
+) !void {
+
+    // Print Pre-Header
+    {
+        _ = try writer.write(tl);
+
+        inline for (0..comptime fields.count()) |i| {
+            if (i > 0) {
+                _ = try writer.write(tm);
+            }
+            const padding = max_column_widths[i] + 2;
+            for (0..padding) |_| {
+                _ = try writer.write(hor);
+            }
+        }
+
+        _ = try writer.write(tr ++ "\n");
+    }
+
+    // Main Header
+    {
+        _ = try writer.write(sep);
+
+        comptime var itr = fields.iterator();
+        comptime var i: usize = 0;
+        inline while (comptime itr.next()) |field| : (i += 1) {
+            _ = try writer.write(" ");
+            try write_aligned(
+                writer,
+                @tagName(field),
+                max_column_widths[i],
+                .center,
+            );
+            try writer.print(" {s}", .{sep});
+        }
+
+        try writer.print("\n", .{});
+    }
+
+    // Print post-header
+    {
+        _ = try writer.write(ml);
+
+        inline for (0..comptime fields.count()) |i| {
+            if (i > 0) {
+                _ = try writer.write(mm);
+            }
+            const padding = max_column_widths[i] + 2;
+            for (0..padding) |_| {
+                _ = try writer.write(hor);
+            }
+        }
+
+        _ = try writer.write(mr ++ "\n");
+    }
+}
+
+fn write_aligned(
+    writer: *std.Io.Writer,
+    data: []const u8,
+    max_width: usize,
+    alignment: Alignment,
+) !void {
+    const padding: [2]usize = switch (alignment) {
+        .left => .{ 0, max_width - data.len },
+        .right => .{ max_width - data.len, 0 },
+        .center => blk: {
+            // Faster to inline the divFloor?
+            const half = @divFloor(max_width - data.len, 2);
+            break :blk .{ half, max_width - data.len - half };
+        },
+    };
+
+    for (0..padding[0]) |_| {
+        _ = try writer.write(" ");
+    }
+
+    _ = try writer.write(data);
+
+    for (0..padding[1]) |_| {
+        _ = try writer.write(" ");
+    }
+}
+
+const Alignment = enum { left, center, right };
+
+test "can print a simple table" {
+    const gpa = std.testing.allocator;
+
+    var out: std.Io.Writer.Allocating = .init(gpa);
+    defer out.deinit();
+
+    const F = struct { foo: []const u8, bar: []const u8 };
+    const table: Table(F, .full) = .{
+        .items = &.{.{ .foo = "bat", .bar = "baz" }},
+    };
+
+    try out.writer.print("{f}", .{table});
+
+    const got = try out.toOwnedSlice();
+    defer gpa.free(got);
+
+    try std.testing.expectEqualStrings(
+        \\┌─────┬─────┐
+        \\│ foo │ bar │
+        \\├─────┼─────┤
+        \\│ bat │ baz │
+        \\└─────┴─────┘
+        \\
+    , got);
+}
+
+test "can print a table with varying header widths" {
+    const gpa = std.testing.allocator;
+
+    var out: std.Io.Writer.Allocating = .init(gpa);
+    defer out.deinit();
+
+    const F = struct { foo: []const u8, abart: []const u8 };
+    const table: Table(F, .full) = .{
+        .items = &.{.{ .foo = "bat", .abart = "baz" }},
+    };
+    try out.writer.print("{f}", .{table});
+
+    const got = try out.toOwnedSlice();
+    defer gpa.free(got);
+
+    try std.testing.expectEqualStrings(
+        \\┌─────┬───────┐
+        \\│ foo │ abart │
+        \\├─────┼───────┤
+        \\│ bat │ baz   │
+        \\└─────┴───────┘
+        \\
+    , got);
+}
+
+test "can print a table with varying column widths" {
+    const gpa = std.testing.allocator;
+
+    var out: std.Io.Writer.Allocating = .init(gpa);
+    defer out.deinit();
+
+    const F = struct { foo: []const u8, bar: []const u8 };
+    const table: Table(F, .full) = .{ .items = &.{.{ .foo = "bat", .bar = "bazzar" }} };
+
+    try out.writer.print("{f}", .{table});
+
+    const got = try out.toOwnedSlice();
+    defer gpa.free(got);
+
+    try std.testing.expectEqualStrings(
+        \\┌─────┬────────┐
+        \\│ foo │  bar   │
+        \\├─────┼────────┤
+        \\│ bat │ bazzar │
+        \\└─────┴────────┘
+        \\
+    , got);
+}
+
+test "can print a multi row table with varying column widths" {
+    const gpa = std.testing.allocator;
+
+    var out: std.Io.Writer.Allocating = .init(gpa);
+    defer out.deinit();
+
+    const F = struct { foo: []const u8, bar: []const u8 };
+    const table: Table(F, .full) = .{
+        .items = &.{
+            .{ .foo = "baz", .bar = "quz" },
+            .{ .foo = "bat", .bar = "bazzar" },
+        },
+    };
+    try out.writer.print("{f}", .{table});
+
+    const got = try out.toOwnedSlice();
+    defer gpa.free(got);
+
+    try std.testing.expectEqualStrings(
+        \\┌─────┬────────┐
+        \\│ foo │  bar   │
+        \\├─────┼────────┤
+        \\│ baz │ quz    │
+        \\│ bat │ bazzar │
+        \\└─────┴────────┘
+        \\
+    , got);
+}
+
+test "can print a table with limited columns" {
+    const gpa = std.testing.allocator;
+
+    var out: std.Io.Writer.Allocating = .init(gpa);
+    defer out.deinit();
+
+    const F = struct { foo: []const u8, bar: []const u8 };
+    const table: Table(F, .initOne(.foo)) = .{
+        .items = &.{.{ .foo = "bat", .bar = "baz" }},
+    };
+
+    try out.writer.print("{f}", .{table});
+
+    const got = try out.toOwnedSlice();
+    defer gpa.free(got);
+
+    try std.testing.expectEqualStrings(
+        \\┌─────┐
+        \\│ foo │
+        \\├─────┤
+        \\│ bat │
+        \\└─────┘
+        \\
+    , got);
+}