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feat: perform gutter diffing against git HEAD if available

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CJ van den Berg 2025-12-17 22:11:52 +01:00
parent 18983c00b4
commit 1190c99212
Signed by: neurocyte
GPG key ID: 8EB1E1BB660E3FB9
2 changed files with 19 additions and 19 deletions
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10
src/diff.zig
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@ -47,10 +47,14 @@ pub const AsyncDiffer = struct {
pub const CallBack = fn (from: tp.pid_ref, edits: []Diff) void; pub const CallBack = fn (from: tp.pid_ref, edits: []Diff) void;
pub fn diff(self: @This(), cb: *const CallBack, root_dst: Buffer.Root, root_src: Buffer.Root, eol_mode: Buffer.EolMode) tp.result { pub fn diff_buffer(self: @This(), cb: *const CallBack, buffer: *const Buffer) tp.result {
const text_dst = text_from_root(root_dst, eol_mode) catch |e| return tp.exit_error(e, @errorReturnTrace()); const eol_mode = buffer.file_eol_mode;
const text_dst = text_from_root(buffer.root, eol_mode) catch |e| return tp.exit_error(e, @errorReturnTrace());
errdefer std.heap.c_allocator.free(text_dst); errdefer std.heap.c_allocator.free(text_dst);
const text_src = text_from_root(root_src, eol_mode) catch |e| return tp.exit_error(e, @errorReturnTrace()); const text_src = if (buffer.get_vcs_content()) |vcs_content|
std.heap.c_allocator.dupe(u8, vcs_content) catch |e| return tp.exit_error(e, @errorReturnTrace())
else
text_from_root(buffer.last_save orelse return, eol_mode) catch |e| return tp.exit_error(e, @errorReturnTrace());
errdefer std.heap.c_allocator.free(text_src); errdefer std.heap.c_allocator.free(text_src);
const text_dst_ptr: usize = if (text_dst.len > 0) @intFromPtr(text_dst.ptr) else 0; const text_dst_ptr: usize = if (text_dst.len > 0) @intFromPtr(text_dst.ptr) else 0;
const text_src_ptr: usize = if (text_src.len > 0) @intFromPtr(text_src.ptr) else 0; const text_src_ptr: usize = if (text_src.len > 0) @intFromPtr(text_src.ptr) else 0;

28
src/tui/editor_gutter.zig
View file

@ -338,11 +338,7 @@ fn diff_update(self: *Self) !void {
self.diff_symbols_clear(); self.diff_symbols_clear();
return; return;
} }
const editor = self.editor; return self.diff_.diff_buffer(diff_result, self.editor.buffer orelse return);
const new = editor.get_current_root() orelse return;
const old = if (editor.buffer) |buffer| buffer.last_save orelse return else return;
const eol_mode = if (editor.buffer) |buffer| buffer.file_eol_mode else return;
return self.diff_.diff(diff_result, new, old, eol_mode);
} }
fn diff_result(from: tp.pid_ref, edits: []diff.Diff) void { fn diff_result(from: tp.pid_ref, edits: []diff.Diff) void {
@ -350,22 +346,22 @@ fn diff_result(from: tp.pid_ref, edits: []diff.Diff) void {
} }
fn diff_result_send(from: tp.pid_ref, edits: []diff.Diff) !void { fn diff_result_send(from: tp.pid_ref, edits: []diff.Diff) !void {
var buf: [tp.max_message_size]u8 = undefined; var buf: std.Io.Writer.Allocating = .init(std.heap.c_allocator);
var writer: std.Io.Writer = .fixed(&buf); defer buf.deinit();
try cbor.writeArrayHeader(&writer, 2); try cbor.writeArrayHeader(&buf.writer, 2);
try cbor.writeValue(&writer, "DIFF"); try cbor.writeValue(&buf.writer, "DIFF");
try cbor.writeArrayHeader(&writer, edits.len); try cbor.writeArrayHeader(&buf.writer, edits.len);
for (edits) |edit| { for (edits) |edit| {
try cbor.writeArrayHeader(&writer, 4); try cbor.writeArrayHeader(&buf.writer, 4);
try cbor.writeValue(&writer, switch (edit.kind) { try cbor.writeValue(&buf.writer, switch (edit.kind) {
.insert => "I", .insert => "I",
.delete => "D", .delete => "D",
}); });
try cbor.writeValue(&writer, edit.line); try cbor.writeValue(&buf.writer, edit.line);
try cbor.writeValue(&writer, edit.offset); try cbor.writeValue(&buf.writer, edit.offset);
try cbor.writeValue(&writer, edit.bytes); try cbor.writeValue(&buf.writer, edit.bytes);
} }
from.send_raw(tp.message{ .buf = writer.buffered() }) catch return; from.send_raw(tp.message{ .buf = buf.written() }) catch return;
} }
pub fn process_diff(self: *Self, cb: []const u8) MessageFilter.Error!void { pub fn process_diff(self: *Self, cb: []const u8) MessageFilter.Error!void {