use higher level stdlib APIs

Signed-off-by: Robert Günzler <r@gnzler.io>

3 files changed, 12 insertions, 13 deletions

diff --git a/src/exe.zig b/src/exe.zig
index 06e7a4d..5776538 100644
--- a/src/exe.zig
+++ b/src/exe.zig
@@ -46,7 +46,7 @@ fn pandocWorker(ctx: *Context, page: []const u8) !void {
     );
 
     // get mtime of the source document
-    const mtime = try fs.getMtime(ctx.allocator(), source_path);
+    const mtime = try fs.getMtime(source_path);
     const mtime_str = try fs.formatMtime(ctx.allocator(), mtime, "%s");
     defer ctx.allocator().free(mtime_str);
 
diff --git a/src/fs.zig b/src/fs.zig
index d29ee05..2a141d1 100644
--- a/src/fs.zig
+++ b/src/fs.zig
@@ -100,22 +100,21 @@ pub fn joinPathAndFilename(alloc: std.mem.Allocator, paths: []const []const u8,
     return try std.fs.path.join(alloc, paths2);
 }
 
-pub fn getMtime(alloc: std.mem.Allocator, path: []const u8) !std.os.linux.timespec {
-    const attr = try alloc.create(std.os.linux.Stat);
-    defer alloc.destroy(attr);
+pub fn getMtime(path: []const u8) !std.posix.timespec {
+    const fd = try std.fs.cwd().openFile(path, .{ .mode = .read_only });
+    defer fd.close();
 
-    const pathZ = try alloc.dupeZ(u8, path);
-    defer alloc.free(pathZ);
+    const meta = try fd.metadata();
+    const mtime = meta.modified();
 
-    // use stat to get mtime
-    const rc = std.os.linux.stat(pathZ, attr);
-    if (rc < 0) return error.UnknownStatError;
-
-    return attr.mtime();
+    return .{
+        .sec = std.math.cast(isize, @divFloor(mtime, std.time.ns_per_s)) orelse std.math.maxInt(isize),
+        .nsec = std.math.cast(isize, @mod(mtime, std.time.ns_per_s)) orelse std.math.maxInt(isize),
+    };
 }
 
 // use libc strftime to format time string
-pub fn formatMtime(alloc: std.mem.Allocator, mtime: std.os.linux.timespec, fmt: [*c]const u8) ![]const u8 {
+pub fn formatMtime(alloc: std.mem.Allocator, mtime: std.posix.timespec, fmt: [*c]const u8) ![]const u8 {
     const mtime_str = try alloc.alloc(u8, std.os.linux.PATH_MAX);
     var tm: c.struct_tm = undefined;
     _ = c.localtime_r(&mtime.sec, &tm);
diff --git a/src/gen.zig b/src/gen.zig
index 0504d39..a02503b 100644
--- a/src/gen.zig
+++ b/src/gen.zig
@@ -109,7 +109,7 @@ fn genSite(ctx: *Context) !void {
 
 // build a single html file
 fn build(allocator: std.mem.Allocator, w: std.io.AnyWriter, page_name: []const u8, srcpath: []const u8) !void {
-    const mtime = try fs.getMtime(allocator, srcpath);
+    const mtime = try fs.getMtime(srcpath);
     const mtime_str = try fs.formatMtime(allocator, mtime, "%F");
     defer allocator.free(mtime_str);