From 64ac31668dfd89c9e700d683d8f4c1aae1728703 Mon Sep 17 00:00:00 2001
From: Ivan Molodetskikh <yalterz@gmail.com>
Date: Tue, 24 Oct 2023 19:22:02 +0400
Subject: Remove time crate in favor of manual impl

Cuts down a few more dependencies.
---
 Cargo.lock   | 62 ------------------------------------------------------------
 Cargo.toml   |  1 -
 src/utils.rs | 32 +++++++++++++++++++++----------
 3 files changed, 22 insertions(+), 73 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 043d3a1f..45e0599d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -696,15 +696,6 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "740bb192a8e2d1350119916954f4409ee7f62f149b536911eeb78ba5a20526bf"
 
-[[package]]
-name = "deranged"
-version = "0.3.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f32d04922c60427da6f9fef14d042d9edddef64cb9d4ce0d64d0685fbeb1fd3"
-dependencies = [
- "powerfmt",
-]
-
 [[package]]
 name = "derivative"
 version = "2.2.0"
@@ -1170,12 +1161,6 @@ version = "2.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bffb4def18c48926ccac55c1223e02865ce1a821751a95920448662696e7472c"
 
-[[package]]
-name = "itoa"
-version = "1.0.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "af150ab688ff2122fcef229be89cb50dd66af9e01a4ff320cc137eecc9bacc38"
-
 [[package]]
 name = "jni"
 version = "0.21.1"
@@ -1548,7 +1533,6 @@ dependencies = [
  "serde",
  "smithay",
  "smithay-drm-extras",
- "time",
  "tracing",
  "tracing-subscriber",
  "tracy-client",
@@ -1631,15 +1615,6 @@ dependencies = [
  "syn 2.0.38",
 ]
 
-[[package]]
-name = "num_threads"
-version = "0.1.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2819ce041d2ee131036f4fc9d6ae7ae125a3a40e97ba64d04fe799ad9dabbb44"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "objc-sys"
 version = "0.3.1"
@@ -1823,12 +1798,6 @@ version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b559898e0b4931ed2d3b959ab0c2da4d99cc644c4b0b1a35b4d344027f474023"
 
-[[package]]
-name = "powerfmt"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
-
 [[package]]
 name = "ppv-lite86"
 version = "0.2.17"
@@ -2447,37 +2416,6 @@ dependencies = [
  "once_cell",
 ]
 
-[[package]]
-name = "time"
-version = "0.3.30"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c4a34ab300f2dee6e562c10a046fc05e358b29f9bf92277f30c3c8d82275f6f5"
-dependencies = [
- "deranged",
- "itoa",
- "libc",
- "num_threads",
- "powerfmt",
- "serde",
- "time-core",
- "time-macros",
-]
-
-[[package]]
-name = "time-core"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ef927ca75afb808a4d64dd374f00a2adf8d0fcff8e7b184af886c3c87ec4a3f3"
-
-[[package]]
-name = "time-macros"
-version = "0.2.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4ad70d68dba9e1f8aceda7aa6711965dfec1cac869f311a51bd08b3a2ccbce20"
-dependencies = [
- "time-core",
-]
-
 [[package]]
 name = "toml"
 version = "0.8.4"
diff --git a/Cargo.toml b/Cargo.toml
index a3704ed6..1f228785 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,7 +26,6 @@ portable-atomic = { version = "1.5.0", default-features = false, features = ["fl
 profiling = "1.0.11"
 sd-notify = "0.4.1"
 serde = { version = "1.0.189", features = ["derive"] }
-time = { version = "0.3.30", features = ["formatting", "local-offset", "macros"] }
 tracing-subscriber = { version = "0.3.17", features = ["env-filter"] }
 tracing = { version = "0.1.40", features = ["max_level_trace", "release_max_level_debug"] }
 tracy-client = { version = "0.16.3", default-features = false }
diff --git a/src/utils.rs b/src/utils.rs
index 80f5a0a1..134112dc 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -1,15 +1,16 @@
 use std::ffi::OsStr;
 use std::io::{self, Write};
+use std::os::unix::prelude::OsStrExt;
 use std::os::unix::process::CommandExt;
 use std::path::PathBuf;
 use std::process::{Command, Stdio};
+use std::ptr::null_mut;
 use std::time::Duration;
 
-use anyhow::Context;
+use anyhow::{ensure, Context};
 use directories::UserDirs;
 use smithay::reexports::rustix::time::{clock_gettime, ClockId};
 use smithay::utils::{Logical, Point, Rectangle};
-use time::OffsetDateTime;
 
 pub fn get_monotonic_time() -> Duration {
     let ts = clock_gettime(ClockId::Monotonic);
@@ -29,16 +30,27 @@ pub fn make_screenshot_path() -> anyhow::Result<PathBuf> {
     });
     path.push("Screenshots");
 
+    let mut buf = [0u8; 256];
+    let name;
     unsafe {
-        // are you kidding me
-        time::util::local_offset::set_soundness(time::util::local_offset::Soundness::Unsound);
-    };
+        let time = libc::time(null_mut());
+        ensure!(time != -1, "error in time()");
+
+        let tm = libc::localtime(&time);
+        ensure!(!tm.is_null(), "error in localtime()");
+
+        let format = b"Screenshot from %Y-%m-%d %H-%M-%S.png\0";
+        let rv = libc::strftime(
+            buf.as_mut_ptr().cast(),
+            buf.len(),
+            format.as_ptr().cast(),
+            tm,
+        );
+        ensure!(rv != 0, "error formatting time");
+
+        name = OsStr::from_bytes(&buf[..rv]);
+    }
 
-    let now = OffsetDateTime::now_local().unwrap_or_else(|_| OffsetDateTime::now_utc());
-    let desc = time::macros::format_description!(
-        "Screenshot from [year]-[month]-[day] [hour]-[minute]-[second].png"
-    );
-    let name = now.format(desc).context("error formatting time")?;
     path.push(name);
 
     Ok(path)
-- 
cgit