1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
const std = @import("std");
const builtin = @import("builtin");
pub const default_path = "/tmp/pardes-dump.zon";
pub const magic = "pardes-dump";
pub const version: u32 = 1;
pub const max_panes: usize = 16;
pub const max_cols: usize = 6;
pub const Size = struct {
cols: u16,
rows: u16,
};
pub const Cursor = struct {
col: u16 = 0,
row: u16 = 0,
};
pub const PaneKind = enum {
terminal,
file,
image,
};
pub const Terminal = struct {
cwd: []const u8 = "",
stream: []const u8 = "",
stream_b64: []const u8 = "",
cursor: Cursor = .{},
};
pub const File = struct {
path: []const u8 = "",
content: []const u8 = "",
content_b64: []const u8 = "",
};
pub const Image = struct {
path: []const u8 = "",
bytes_b64: []const u8 = "",
};
pub const Pane = struct {
kind: PaneKind,
tag: []const u8,
body: []const u8,
scroll: usize = 0,
cols: u16 = 0,
rows: u16 = 0,
vweight: f32 = 1,
terminal: ?Terminal = null,
file: ?File = null,
image: ?Image = null,
};
pub const Column = struct {
weight: f32 = 1,
panes: []const usize = &.{},
};
pub const State = struct {
magic: []const u8 = magic,
version: u32 = version,
screen: Size,
active: usize = 0,
topbar: []const u8 = "",
theme: []const u8 = "dark",
columns: []const Column = &.{},
panes: []const Pane = &.{},
};
pub fn validate(state: State) !void {
if (!std.mem.eql(u8, state.magic, magic)) return error.BadDumpMagic;
if (state.version != version) return error.BadDumpVersion;
if (state.panes.len == 0 or state.panes.len > max_panes) return error.BadDumpPanes;
if (state.columns.len == 0 or state.columns.len > max_cols) return error.BadDumpColumns;
if (state.active >= state.panes.len) return error.BadDumpActive;
for (state.columns) |col| {
if (col.panes.len == 0 or col.panes.len > max_panes) return error.BadDumpColumns;
for (col.panes) |pane| {
if (pane >= state.panes.len) return error.BadDumpPaneRef;
}
}
for (state.panes) |pane| {
switch (pane.kind) {
.terminal => if (pane.terminal == null) return error.BadDumpPaneKind,
.file => if (pane.file == null) return error.BadDumpPaneKind,
.image => if (pane.image == null) return error.BadDumpPaneKind,
}
}
}
pub fn writeFile(io: std.Io, gpa: std.mem.Allocator, path: []const u8, state: State) !void {
try validate(state);
var out: std.Io.Writer.Allocating = .init(gpa);
defer out.deinit();
try std.zon.stringify.serialize(state, .{ .whitespace = true }, &out.writer);
var file = try std.Io.Dir.createFileAbsolute(io, path, .{});
defer file.close(io);
try file.writeStreamingAll(io, out.written());
}
pub fn readFile(io: std.Io, gpa: std.mem.Allocator, path: []const u8) !State {
const bytes = try std.Io.Dir.cwd().readFileAlloc(io, path, gpa, .limited(64 * 1024 * 1024));
defer gpa.free(bytes);
return readZon(gpa, bytes, path);
}
pub fn readZon(gpa: std.mem.Allocator, bytes: []const u8, label: []const u8) !State {
const source = try gpa.dupeZ(u8, bytes);
defer gpa.free(source);
return readZonZ(gpa, source, label);
}
pub fn readZonZ(gpa: std.mem.Allocator, source: [:0]const u8, label: []const u8) !State {
if (builtin.os.tag == .emscripten) {
const state = std.zon.parse.fromSliceAlloc(State, gpa, source, null, .{}) catch |err| {
std.log.err("parse dump {s}: {s}", .{ label, @errorName(err) });
return err;
};
errdefer std.zon.parse.free(gpa, state);
try validate(state);
return state;
}
var diag: std.zon.parse.Diagnostics = .{};
defer diag.deinit(gpa);
const state = std.zon.parse.fromSliceAlloc(State, gpa, source, &diag, .{}) catch |err| {
std.log.err("parse dump {s}: {f}", .{ label, diag });
return err;
};
errdefer std.zon.parse.free(gpa, state);
try validate(state);
return state;
}
pub fn free(gpa: std.mem.Allocator, state: State) void {
std.zon.parse.free(gpa, state);
}
pub fn encodeBytes(alloc: std.mem.Allocator, bytes: []const u8) ![]const u8 {
const enc = std.base64.standard.Encoder;
const out = try alloc.alloc(u8, enc.calcSize(bytes.len));
return enc.encode(out, bytes);
}
pub fn decodeBytes(alloc: std.mem.Allocator, b64: []const u8) ![]u8 {
const dec = std.base64.standard.Decoder;
const n = try dec.calcSizeForSlice(b64);
const out = try alloc.alloc(u8, n);
errdefer alloc.free(out);
try dec.decode(out, b64);
return out;
}
test "dump zon roundtrip" {
const gpa = std.testing.allocator;
const tty_b64 = try encodeBytes(gpa, "old\nhello\nworld");
defer gpa.free(tty_b64);
const file_b64 = try encodeBytes(gpa, "alpha\nbeta\n");
defer gpa.free(file_b64);
const panes = [_]Pane{
.{
.kind = .terminal,
.tag = "nm /tmp Del",
.body = "hello\nworld",
.scroll = 1,
.cols = 40,
.rows = 10,
.terminal = .{ .cwd = "/tmp", .stream = "old\nhello\nworld", .stream_b64 = tty_b64, .cursor = .{ .col = 3, .row = 2 } },
},
.{
.kind = .file,
.tag = "nm /tmp/a.txt Save Del",
.body = " 1 alpha",
.cols = 20,
.rows = 5,
.file = .{ .path = "/tmp/a.txt", .content = "alpha\nbeta\n", .content_b64 = file_b64 },
},
};
const col_panes = [_]usize{ 0, 1 };
const columns = [_]Column{.{ .weight = 1, .panes = &col_panes }};
const state: State = .{
.screen = .{ .cols = 80, .rows = 24 },
.topbar = "Kill Newcol Dump",
.theme = "dark",
.columns = &columns,
.panes = &panes,
};
var out: std.Io.Writer.Allocating = .init(gpa);
defer out.deinit();
try std.zon.stringify.serialize(state, .{ .whitespace = true }, &out.writer);
const source = try out.toOwnedSliceSentinel(0);
defer gpa.free(source);
var diag: std.zon.parse.Diagnostics = .{};
defer diag.deinit(gpa);
const parsed = try std.zon.parse.fromSliceAlloc(State, gpa, source, &diag, .{});
defer std.zon.parse.free(gpa, parsed);
try validate(parsed);
try std.testing.expectEqual(@as(usize, 2), parsed.panes.len);
try std.testing.expectEqualStrings("dark", parsed.theme);
try std.testing.expectEqualStrings("old\nhello\nworld", parsed.panes[0].terminal.?.stream);
try std.testing.expectEqualStrings("alpha\nbeta\n", parsed.panes[1].file.?.content);
{
const bytes = try decodeBytes(gpa, parsed.panes[0].terminal.?.stream_b64);
defer gpa.free(bytes);
try std.testing.expectEqualStrings("old\nhello\nworld", bytes);
}
{
const bytes = try decodeBytes(gpa, parsed.panes[1].file.?.content_b64);
defer gpa.free(bytes);
try std.testing.expectEqualStrings("alpha\nbeta\n", bytes);
}
}
|
