Switch to windows-bindgen

Cargo.toml

@@ -20,6 +20,7 @@ name = "chrono"
 default = ["clock", "std", "oldtime", "wasmbind"]
 alloc = []
 libc = []
+winapi = ["windows-targets"]
 std = []
 clock = ["std", "winapi", "iana-time-zone", "android-tzdata"]
 oldtime = ["time"]
@@ -44,7 +45,10 @@ js-sys = { version = "0.3", optional = true }       # contains FFI bindings for
 
 
 [target.'cfg(windows)'.dependencies]
-winapi = { version = "0.3.0", features = ["std", "minwinbase", "minwindef", "timezoneapi", "sysinfoapi"], optional = true }
+windows-targets = { version = "0.48", optional = true }
+
+[target.'cfg(windows)'.dev-dependencies]
+windows-bindgen = { version = "0.51" }
 
 [target.'cfg(unix)'.dependencies]
 iana-time-zone = { version = "0.1.45", optional = true, features = ["fallback"] }

src/offset/local/mod.rs

@@ -21,6 +21,10 @@ mod inner;
 #[path = "windows.rs"]
 mod inner;
 
+#[cfg(all(windows, feature = "clock"))]
+#[allow(unreachable_pub)]
+mod win_bindings;
+
 #[cfg(all(
     not(unix),
     not(windows),

src/offset/local/win_bindings.rs

@@ -0,0 +1,51 @@
+// Bindings generated by `windows-bindgen` 0.51.1
+
+#![allow(non_snake_case, non_upper_case_globals, non_camel_case_types, dead_code, clippy::all)]
+::windows_targets::link!("kernel32.dll" "system" fn SystemTimeToFileTime(lpsystemtime : *const SYSTEMTIME, lpfiletime : *mut FILETIME) -> BOOL);
+::windows_targets::link!("kernel32.dll" "system" fn SystemTimeToTzSpecificLocalTime(lptimezoneinformation : *const TIME_ZONE_INFORMATION, lpuniversaltime : *const SYSTEMTIME, lplocaltime : *mut SYSTEMTIME) -> BOOL);
+::windows_targets::link!("kernel32.dll" "system" fn TzSpecificLocalTimeToSystemTime(lptimezoneinformation : *const TIME_ZONE_INFORMATION, lplocaltime : *const SYSTEMTIME, lpuniversaltime : *mut SYSTEMTIME) -> BOOL);
+pub type BOOL = i32;
+#[repr(C)]
+pub struct FILETIME {
+    pub dwLowDateTime: u32,
+    pub dwHighDateTime: u32,
+}
+impl ::core::marker::Copy for FILETIME {}
+impl ::core::clone::Clone for FILETIME {
+    fn clone(&self) -> Self {
+        *self
+    }
+}
+#[repr(C)]
+pub struct SYSTEMTIME {
+    pub wYear: u16,
+    pub wMonth: u16,
+    pub wDayOfWeek: u16,
+    pub wDay: u16,
+    pub wHour: u16,
+    pub wMinute: u16,
+    pub wSecond: u16,
+    pub wMilliseconds: u16,
+}
+impl ::core::marker::Copy for SYSTEMTIME {}
+impl ::core::clone::Clone for SYSTEMTIME {
+    fn clone(&self) -> Self {
+        *self
+    }
+}
+#[repr(C)]
+pub struct TIME_ZONE_INFORMATION {
+    pub Bias: i32,
+    pub StandardName: [u16; 32],
+    pub StandardDate: SYSTEMTIME,
+    pub StandardBias: i32,
+    pub DaylightName: [u16; 32],
+    pub DaylightDate: SYSTEMTIME,
+    pub DaylightBias: i32,
+}
+impl ::core::marker::Copy for TIME_ZONE_INFORMATION {}
+impl ::core::clone::Clone for TIME_ZONE_INFORMATION {
+    fn clone(&self) -> Self {
+        *self
+    }
+}

src/offset/local/win_bindings.txt

@@ -0,0 +1,6 @@
+--out src/offset/local/win_bindings.rs
+--config flatten sys
+--filter
+    Windows.Win32.System.Time.SystemTimeToFileTime
+    Windows.Win32.System.Time.SystemTimeToTzSpecificLocalTime
+    Windows.Win32.System.Time.TzSpecificLocalTimeToSystemTime

src/offset/local/windows.rs

@@ -13,10 +13,9 @@ use std::io::Error;
 use std::ptr;
 use std::result::Result;
 
-use winapi::shared::minwindef::FILETIME;
-use winapi::um::minwinbase::SYSTEMTIME;
-use winapi::um::timezoneapi::{
+use super::win_bindings::{
     SystemTimeToFileTime, SystemTimeToTzSpecificLocalTime, TzSpecificLocalTimeToSystemTime,
+    FILETIME, SYSTEMTIME,
 };
 
 use super::FixedOffset;

tests/win_bindings.rs

@@ -0,0 +1,22 @@
+#![cfg(all(windows, feature = "clock", feature = "std"))]
+
+use std::fs;
+use windows_bindgen::bindgen;
+
+#[test]
+fn gen_bindings() {
+    let input = "src/offset/local/win_bindings.txt";
+    let output = "src/offset/local/win_bindings.rs";
+    let existing = fs::read_to_string(output).unwrap();
+
+    let log = bindgen(["--etc", input]).unwrap();
+    eprintln!("{}", log);
+
+    // Check the output is the same as before.
+    // Depending on the git configuration the file may have been checked out with `\r\n` newlines or
+    // with `\n`. Compare line-by-line to ignore this difference.
+    let new = fs::read_to_string(output).unwrap();
+    if !new.lines().eq(existing.lines()) {
+        panic!("generated file `{}` is changed.", output);
+    }
+}