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-rw-r--r--src/gui.zig89
1 files changed, 37 insertions, 52 deletions
diff --git a/src/gui.zig b/src/gui.zig
index 516a6b79..c1881c7c 100644
--- a/src/gui.zig
+++ b/src/gui.zig
@@ -1,6 +1,6 @@
//! The SDL3 GPU shell: owns an SDL window + event loop, translates SDL input
//! into core events, performs the core's effects (fork ptys, write them,
-//! resize them — same duties as tty.zig, this is also native linux), and
+//! resize them — same duties as tty.zig, this is also native), and
//! rasterizes the core's Surface: one instanced quad per cell, glyphs from an
//! stb_truetype R8 atlas. Test modes: PARDES_TEST_GRID=1 is headless (no SDL,
//! stdin escape sequences in, text grid frames out); PARDES_TEST=1 keeps the
@@ -13,10 +13,11 @@
const std = @import("std");
const builtin = @import("builtin");
const posix = std.posix;
-const linux = std.os.linux;
+const libc = std.c;
const vaxis = @import("vaxis"); // test modes only: the stdin escape-seq parser
const ghostty_vt = @import("ghostty-vt"); // 256-color palette for .index cells
const pardes = @import("pardes.zig");
+const look = @import("look.zig");
const is_emscripten = builtin.os.tag == .emscripten;
@@ -34,6 +35,12 @@ extern "c" fn _exit(status: c_int) noreturn;
extern "c" fn emscripten_get_element_css_size(target: [*:0]const u8, width: *f64, height: *f64) c_int;
const EMSCRIPTEN_RESULT_SUCCESS: c_int = 0;
+// absolute shell path per OS: execv must not search PATH (no allocation
+// between fork and exec)
+const bash_path: [*:0]const u8 = if (builtin.os.tag == .linux) "/usr/bin/bash" else "/bin/bash";
+// TIOCSWINSZ: absent from std.c.T on darwin — _IOW('t', 103, winsize)
+const TIOCSWINSZ: c_int = @bitCast(@as(u32, if (@hasDecl(posix.T, "IOCSWINSZ")) posix.T.IOCSWINSZ else 0x80087467));
+
const log = std.log.scoped(.gui);
const font_ttf = @embedFile("AdwaitaMono-Regular.ttf");
@@ -271,7 +278,7 @@ fn normCell(norm: f32, win: f32, cell: f32) u16 {
// ---- pty plumbing: reader threads feed a mutex-protected queue ----
-const Pty = struct { fd: c_int, pid: linux.pid_t };
+const Pty = struct { fd: c_int, pid: libc.pid_t };
const Msg = union(enum) { output: struct { pane: u8, bytes: []u8 }, eof: u8 };
@@ -338,10 +345,9 @@ const Queue = struct {
fn readPtyThread(gpa: std.mem.Allocator, fd: c_int, pane: u8, q: *Queue) void {
var buf: [0x10000]u8 = undefined;
while (true) {
- const rc = linux.read(fd, &buf, buf.len);
- const n: isize = @bitCast(rc);
+ const n = libc.read(fd, &buf, buf.len);
if (n < 0) {
- if (n == -@as(isize, @intFromEnum(linux.E.INTR))) continue;
+ if (libc.errno(n) == .INTR) continue;
break; // EIO when the child exits: treat as EOF
}
if (n == 0) break;
@@ -622,7 +628,7 @@ fn runNative(init: std.process.Init, opts_in: pardes.Options) !void {
var ptys: [pardes.MAX_PANES]?Pty = @splat(null);
defer for (&ptys) |*slot| if (slot.*) |pt| {
- _ = linux.close(pt.fd);
+ _ = libc.close(pt.fd);
slot.* = null;
};
var queue: Queue = .{ .gpa = gpa, .sdl_wake = true };
@@ -662,7 +668,7 @@ fn runNative(init: std.process.Init, opts_in: pardes.Options) !void {
},
.eof => |id| {
if (ptys[id]) |pt| {
- _ = linux.close(pt.fd);
+ _ = libc.close(pt.fd);
ptys[id] = null;
}
core.update(.{ .eof = .{ .pane = id } });
@@ -895,7 +901,7 @@ fn runGrid(init: std.process.Init, opts_in: pardes.Options) !void {
var ptys: [pardes.MAX_PANES]?Pty = @splat(null);
defer for (&ptys) |*slot| if (slot.*) |pt| {
- _ = linux.close(pt.fd);
+ _ = libc.close(pt.fd);
slot.* = null;
};
var queue: Queue = .{ .gpa = gpa, .sdl_wake = false };
@@ -927,7 +933,7 @@ fn runGrid(init: std.process.Init, opts_in: pardes.Options) !void {
},
.eof => |id| {
if (ptys[id]) |pt| {
- _ = linux.close(pt.fd);
+ _ = libc.close(pt.fd);
ptys[id] = null;
}
core.update(.{ .eof = .{ .pane = id } });
@@ -981,8 +987,7 @@ const StdinFeed = struct {
if ((fds[0].revents & (posix.POLL.HUP | posix.POLL.ERR)) != 0) out.eof = true;
return out;
}
- const rc = linux.read(0, f.buf[f.fill..].ptr, f.buf.len - f.fill);
- const rn: isize = @bitCast(rc);
+ const rn = libc.read(0, f.buf[f.fill..].ptr, f.buf.len - f.fill);
if (rn < 0) return out;
if (rn == 0) {
out.eof = true;
@@ -1433,12 +1438,7 @@ fn drainEffects(
ptys[sp.pane] = pt;
// report the pane's starting directory back to the core (tags)
var lbuf: [1024]u8 = undefined;
- var pbuf: [64]u8 = undefined;
- if (std.fmt.bufPrintSentinel(&pbuf, "/proc/{d}/cwd", .{pt.pid}, 0) catch null) |path| {
- const rc = linux.readlinkat(linux.AT.FDCWD, path, &lbuf, lbuf.len);
- const n: isize = @bitCast(rc);
- if (n > 0) core.setCwd(sp.pane, lbuf[0..@intCast(n)]);
- }
+ if (look.shellCwd(pt.pid, &lbuf)) |wd| core.setCwd(sp.pane, wd);
if (threads_ok) spawnReader(gpa, pt, sp.pane, queue);
},
.write => |w| {
@@ -1447,7 +1447,7 @@ fn drainEffects(
.resize_pty => |rs| {
if (ptys[rs.pane]) |pt| {
const ws: posix.winsize = .{ .row = rs.rows, .col = rs.cols, .xpixel = 0, .ypixel = 0 };
- _ = posix.system.ioctl(pt.fd, posix.T.IOCSWINSZ, @intFromPtr(&ws));
+ _ = posix.system.ioctl(pt.fd, TIOCSWINSZ, @intFromPtr(&ws));
}
},
.open_link => {}, // native: look opens panes instead; nothing to launch
@@ -1458,21 +1458,17 @@ fn drainEffects(
if (f.path.len >= pathbuf.len) continue;
@memcpy(pathbuf[0..f.path.len], f.path);
pathbuf[f.path.len] = 0;
- const rc = linux.open(pathbuf[0..f.path.len :0], .{ .ACCMODE = .WRONLY, .CREAT = true, .TRUNC = true }, 0o644);
- const sfd: isize = @bitCast(rc);
- if (sfd < 0) continue;
- const fd: c_int = @intCast(sfd);
+ const fd = libc.open(pathbuf[0..f.path.len :0], .{ .ACCMODE = .WRONLY, .CREAT = true, .TRUNC = true }, @as(libc.mode_t, 0o644));
+ if (fd < 0) continue;
writeFd(fd, f.content);
- _ = linux.close(fd);
+ _ = libc.close(fd);
},
.write_dump => {
const out = core.dump_out orelse continue;
- const rc = linux.open(pardes.dump.default_path, .{ .ACCMODE = .WRONLY, .CREAT = true, .TRUNC = true }, 0o644);
- const sfd: isize = @bitCast(rc);
- if (sfd < 0) continue;
- const fd: c_int = @intCast(sfd);
+ const fd = libc.open(pardes.dump.default_path, .{ .ACCMODE = .WRONLY, .CREAT = true, .TRUNC = true }, @as(libc.mode_t, 0o644));
+ if (fd < 0) continue;
writeFd(fd, out);
- _ = linux.close(fd);
+ _ = libc.close(fd);
},
.set_clipboard => {
if (g == null) continue;
@@ -1500,8 +1496,8 @@ fn forkShell(cwd: ?[*:0]const u8, rows: u16, cols: u16) Pty {
const pid = forkpty(&master, null, null, &ws);
if (pid == 0) {
if (cwd) |cd| _ = chdir(cd);
- const argv: [4:null]?[*:0]const u8 = .{ "/usr/bin/bash", "--rcfile", "/tmp/pardes-osc133.bash", null };
- _ = execv("/usr/bin/bash", &argv);
+ const argv: [4:null]?[*:0]const u8 = .{ bash_path, "--rcfile", "/tmp/pardes-osc133.bash", null };
+ _ = execv(bash_path, &argv);
_exit(127);
}
return .{ .fd = master, .pid = pid };
@@ -1510,11 +1506,7 @@ fn forkShell(cwd: ?[*:0]const u8, rows: u16, cols: u16) Pty {
fn pollCwds(core: *pardes.Pardes, ptys: *[pardes.MAX_PANES]?Pty) void {
for (ptys, 0..) |slot, id| if (slot) |pt| {
var lbuf: [1024]u8 = undefined;
- var pbuf: [64]u8 = undefined;
- const path = std.fmt.bufPrintSentinel(&pbuf, "/proc/{d}/cwd", .{pt.pid}, 0) catch continue;
- const rc = linux.readlinkat(linux.AT.FDCWD, path, &lbuf, lbuf.len);
- const n: isize = @bitCast(rc);
- if (n > 0) core.setCwd(id, lbuf[0..@intCast(n)]);
+ if (look.shellCwd(pt.pid, &lbuf)) |cwd| core.setCwd(id, cwd);
};
}
@@ -2073,11 +2065,9 @@ fn writeCapturePpm(g: *Gui, gpa: std.mem.Allocator, pixels: []const u8, width: u
const tmp_path = std.fmt.bufPrintSentinel(&tmp_buf, "{s}/latest.ppm.tmp", .{g.capture_dir}, 0) catch return error.CapturePathTooLong;
const final_path = std.fmt.bufPrintSentinel(&final_buf, "{s}/latest.ppm", .{g.capture_dir}, 0) catch return error.CapturePathTooLong;
- const orc = linux.open(tmp_path, .{ .ACCMODE = .WRONLY, .CREAT = true, .TRUNC = true }, 0o644);
- const sfd: isize = @bitCast(orc);
- if (sfd < 0) return error.CaptureWriteFailed;
- const fd: c_int = @intCast(sfd);
- defer _ = linux.close(fd);
+ const fd = libc.open(tmp_path, .{ .ACCMODE = .WRONLY, .CREAT = true, .TRUNC = true }, @as(libc.mode_t, 0o644));
+ if (fd < 0) return error.CaptureWriteFailed;
+ defer _ = libc.close(fd);
var header: [64]u8 = undefined;
const hdr = std.fmt.bufPrint(&header, "P6\n{d} {d}\n255\n", .{ width, height }) catch return error.CaptureWriteFailed;
@@ -2096,9 +2086,7 @@ fn writeCapturePpm(g: *Gui, gpa: std.mem.Allocator, pixels: []const u8, width: u
}
writeFd(fd, row_rgb);
}
- const rrc = linux.rename(tmp_path, final_path);
- const rs: isize = @bitCast(rrc);
- if (rs < 0) return error.CaptureWriteFailed;
+ if (libc.rename(tmp_path, final_path) != 0) return error.CaptureWriteFailed;
}
// =====================================================================
@@ -2377,21 +2365,18 @@ fn envU16(env: *std.process.Environ.Map, name: []const u8) ?u16 {
}
fn writeFile(data: []const u8) void {
- const rc = linux.open("/tmp/pardes-osc133.bash", .{ .ACCMODE = .WRONLY, .CREAT = true, .TRUNC = true }, 0o644);
- const sfd: isize = @bitCast(rc);
- if (sfd < 0) return;
- const fd: c_int = @intCast(sfd);
- defer _ = linux.close(fd);
+ const fd = libc.open("/tmp/pardes-osc133.bash", .{ .ACCMODE = .WRONLY, .CREAT = true, .TRUNC = true }, @as(libc.mode_t, 0o644));
+ if (fd < 0) return;
+ defer _ = libc.close(fd);
writeFd(fd, data);
}
fn writeFd(fd: c_int, data: []const u8) void {
var off: usize = 0;
while (off < data.len) {
- const rc = linux.write(fd, data[off..].ptr, data.len - off);
- const n: isize = @bitCast(rc);
+ const n = libc.write(fd, data[off..].ptr, data.len - off);
if (n < 0) {
- if (n == -@as(isize, @intFromEnum(linux.E.INTR))) continue;
+ if (libc.errno(n) == .INTR) continue;
return;
}
off += @intCast(n);
generated by cgit v1.3 (git 2.53.0) at 2026-10-02 07:12:09 +0000