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std › io › AnyWriter › writeFile

writeFile

Function parameters

Parameters

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file:std.fs.File

Type definitions in this namespace

Types

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Functions in this namespace

Functions

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adaptToNewApi
Helper for bridging to the new `Writer` API while upgrading.

Source

Implementation

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pub fn writeFile(self: Self, file: std.fs.File) anyerror!void {
    // TODO: figure out how to adjust std lib abstractions so that this ends up
    // doing sendfile or maybe even copy_file_range under the right conditions.
    var buf: [4000]u8 = undefined;
    while (true) {
        const n = try file.readAll(&buf);
        try self.writeAll(buf[0..n]);
        if (n < buf.len) return;
    }
}