lobo/clipboard
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move os differences to build.zig

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Since windows is more of a framework model than a library model,
it is simpler to just start with a different entry point
This commit is contained in:
Emil Lerch 2021-11-17 10:56:09 -08:00
parent e0e2374c51
commit 03132d2c67
Signed by: lobo
GPG Key ID: A7B62D657EF764F8
5 changed files with 83 additions and 71 deletions
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9
build.zig
View File

@ -11,9 +11,15 @@ pub fn build(b: *std.build.Builder) void {
// between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall.
const mode = b.standardReleaseOptions();
const exe = b.addExecutable("clipboard", "src/main.zig");
const exe = switch (target.getOs().tag) {
.linux => b.addExecutable("clipboard", "src/main-linux.zig"),
.windows => b.addExecutable("clipboard", "src/main-windows.zig"),
else => std.os.exit(1),
};
exe.setTarget(target);
exe.setBuildMode(mode);
exe.linkLibC();
if (target.getOs().tag == .linux) {
// LibX11 1.7.2: https://gitlab.freedesktop.org/xorg/lib/libx11/-/archive/libX11-1.7.2/libx11-libX11-1.7.2.tar.gz
// LibXfixes 5.0.3: https://gitlab.freedesktop.org/xorg/lib/libxfixes/-/archive/libXfixes-5.0.3/libxfixes-libXfixes-5.0.3.tar.gz
@ -21,7 +27,6 @@ pub fn build(b: *std.build.Builder) void {
// We can download the above by taking each url and processing in a
// command e.g.:
// curl <url> | tar xz --wildcards '*.h'
exe.linkLibC();
exe.addIncludeDir("libx11-libX11-1.7.2/include");
exe.addIncludeDir("libxfixes-libXfixes-5.0.3/include");
exe.addIncludeDir("xorgproto-xorgproto-2021.5/include");

118
src/linux.zig → src/main-linux.zig
View File

@ -5,6 +5,62 @@ const c = @cImport({
@cInclude("X11/extensions/Xfixes.h");
});
pub fn main() !u8 {
var watch = false;
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
defer _ = gpa.deinit();
const allocator = &gpa.allocator;
var args = std.process.args();
defer args.deinit();
while (args.next(allocator)) |arg_or_err| {
const arg = try arg_or_err;
defer allocator.free(arg);
if (std.mem.eql(u8, arg, "-w")) {
watch = true;
break;
}
}
clipboardAction(watch) catch return 1;
return 0;
}
pub fn clipboardAction(watch: bool) !void {
const stdout = std.io.getStdOut().writer();
var display: *c.Display = c.XOpenDisplay(null).?;
defer _ = c.XCloseDisplay(display);
const default_screen = c.XDefaultScreen(display);
var color = c.XBlackPixel(display, default_screen);
var window = c.XCreateSimpleWindow(display, c.XDefaultRootWindow(display), 0, 0, 1, 1, 0, color, color);
defer _ = c.XDestroyWindow(display, window);
// Watch will not return
if (watch) try watchClip(display, window, "CLIPBOARD", stdout);
var result = (try printSelection(display, window, "CLIPBOARD", "UTF8_STRING", stdout)) or
(try printSelection(display, window, "CLIPBOARD", "STRING", stdout));
if (!result) return error.ClipboardActionFailed;
}
fn watchClip(display: *c.Display, window: c.Window, bufname: [*c]const u8, writer: anytype) !void {
var event_base: c_int = undefined;
var error_base: c_int = undefined;
var event: c.XEvent = undefined;
var bufid = c.XInternAtom(display, bufname, c.False);
_ = c.XFixesQueryExtension(display, &event_base, &error_base);
_ = c.XFixesSelectSelectionInput(display, c.XDefaultRootWindow(display), bufid, c.XFixesSetSelectionOwnerNotifyMask);
while (true) {
_ = c.XNextEvent(display, &event);
if (event.type == event_base + c.XFixesSelectionNotify and
event.xselection.property == bufid)
{
_ = try writer.print("y", .{});
if (!try printSelection(display, window, bufname, "UTF8_STRING", writer))
_ = try printSelection(display, window, bufname, "STRING", writer);
}
}
}
fn printSelection(display: *c.Display, window: c.Window, bufname: [*c]const u8, fmtname: [*c]const u8, writer: anytype) !bool {
var ressize: c_ulong = undefined;
var restail: c_ulong = undefined;
@ -30,6 +86,13 @@ fn printSelection(display: *c.Display, window: c.Window, bufname: [*c]const u8,
if (fmtid == incrid) {
ressize = 1;
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
defer _ = gpa.deinit();
var arena_allocator = std.heap.ArenaAllocator.init(&gpa.allocator);
defer arena_allocator.deinit();
var buffer = std.ArrayList(u8).init(&arena_allocator.allocator);
defer buffer.deinit();
// try writer.print("BIG:", .{});
while (ressize > 0) {
_ = c.XNextEvent(display, &event);
while (event.type != c.PropertyNotify or event.xproperty.atom != propid or event.xproperty.state != c.PropertyNewValue) {
@ -37,61 +100,12 @@ fn printSelection(display: *c.Display, window: c.Window, bufname: [*c]const u8,
}
_ = c.XGetWindowProperty(display, window, propid, 0, c.LONG_MAX / 4, c.True, c.AnyPropertyType, &fmtid, &resbits, &ressize, &restail, &result);
defer _ = c.XFree(result);
try writer.print("{s}", .{result});
//defer _ = c.XFree(result); // Creates double free error, but not sure why
try buffer.appendSlice(try std.fmt.allocPrint(&arena_allocator.allocator, "{s}", .{result}));
}
try writer.print("{s}", .{buffer.items});
}
return true;
} else // request failed, e.g. owner can't convert to the target format
return false;
}
fn watch(display: *c.Display, window: c.Window, bufname: [*c]const u8, writer: anytype) !void {
var event_base: c_int = undefined;
var error_base: c_int = undefined;
var event: c.XEvent = undefined;
var bufid = c.XInternAtom(display, bufname, c.False);
_ = c.XFixesQueryExtension(display, &event_base, &error_base);
_ = c.XFixesSelectSelectionInput(display, c.XDefaultRootWindow(display), bufid, c.XFixesSetSelectionOwnerNotifyMask);
while (true) {
_ = c.XNextEvent(display, &event);
// _ = try writer.print("{d} == {d} + {d}. {d} == {d}", .{ event.type, event_base, c.XFixesSelectionNotify, event.xselection.selection, bufid });
// _ = std.debug.print("{}", .{event.xselection});
if (event.type == event_base + c.XFixesSelectionNotify and
event.xselection.property == bufid)
{
_ = try writer.print("y", .{});
if (!try printSelection(display, window, bufname, "UTF8_STRING", writer))
_ = try printSelection(display, window, bufname, "STRING", writer);
}
}
}
pub fn clipboardAction() !void {
const stdout = std.io.getStdOut().writer();
var display: *c.Display = c.XOpenDisplay(null).?;
defer _ = c.XCloseDisplay(display);
const default_screen = c.XDefaultScreen(display);
var color = c.XBlackPixel(display, default_screen);
var window = c.XCreateSimpleWindow(display, c.XDefaultRootWindow(display), 0, 0, 1, 1, 0, color, color);
defer _ = c.XDestroyWindow(display, window);
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
defer _ = gpa.deinit();
const allocator = &gpa.allocator;
var args = std.process.args();
defer args.deinit();
while (args.next(allocator)) |arg_or_err| {
const arg = try arg_or_err;
defer allocator.free(arg);
if (std.mem.eql(u8, arg, "-w")) {
try watch(display, window, "CLIPBOARD", stdout);
}
}
var result = (try printSelection(display, window, "CLIPBOARD", "UTF8_STRING", stdout)) or
(try printSelection(display, window, "CLIPBOARD", "STRING", stdout));
if (!result) return error.ClipboardActionFailed;
}

10
src/main-windows.zig Normal file
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@ -0,0 +1,10 @@
const std = @import("std");
const win = @cImport({
@cInclude("windows.h");
});
pub fn clipboardAction(watch: bool) !void {
_ = watch;
const stdout = std.io.getStdOut().writer();
try stdout.print("All your codebase are belong to us", .{});
try stdout.print("{d}", .{win.HINSTANCE});
}

11
src/main.zig
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@ -1,11 +0,0 @@
const std = @import("std");
pub fn main() !u8 {
if (std.builtin.os.tag == .linux) {
@import("linux.zig").clipboardAction() catch return 1;
}
if (std.builtin.os.tag == .windows) {
@import("windows.zig").clipboardAction() catch return 1;
}
return 0;
}

6
src/windows.zig
View File

@ -1,6 +0,0 @@
const std = @import("std");
pub fn clipboardAction() !void {
const stdout = std.io.getStdOut().writer();
try stdout.print("All your codebase are belong to us", .{});
}