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tar.zig
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tar.zig
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const std = @import("std");
export fn cMain() void {
main() catch unreachable;
}
comptime {
@export(cMain, .{ .name = "main", .linkage = .Strong });
}
pub fn main() !void {
// Setup an allocator that will detect leaks/use-after-free/etc
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
// this will check for leaks and crash the program if it finds any
defer std.debug.assert(gpa.deinit() == .ok);
const allocator = gpa.allocator();
// Read the data from stdin
const stdin = std.io.getStdIn();
const data = try stdin.readToEndAlloc(allocator, std.math.maxInt(usize));
defer allocator.free(data);
var fbs = std.io.fixedBufferStream(data);
const reader = fbs.reader();
// Run tar parser
var tar = std.tar.iterator(reader, null);
while (tar.next() catch null) |file| {
switch (file.kind) {
.directory => {},
.normal => {
file.write(std.io.null_writer) catch |err| {
if (err == error.EndOfStream) break;
return err;
};
},
.symbolic_link => {},
else => unreachable,
}
}
}