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const std = @import("std");
const Allocator = std.mem.Allocator;
const ArrayList = std.ArrayList;
const print = std.debug.print;
const types = @import("./types.zig");
const CommandStatus = types.CommandStatus;
const OutputCapture = types.OutputCapture;
const InputSource = types.InputSource;
pub const Sort = struct {
pub fn eval(sort: Sort, allocator: Allocator, output_capture: ?*OutputCapture, input_source: ?*InputSource) !CommandStatus {
_ = sort;
var lines = ArrayList([]const u8).init(allocator);
defer {
for (lines.items) |line| {
allocator.free(line);
}
lines.deinit();
}
// Read input lines
if (input_source) |source| {
// Read from input redirection
while (try source.readLine(allocator)) |line| {
try lines.append(line);
}
} else {
// Read from stdin (simplified - just show message)
const msg = "SORT: Use input redirection (< file.txt) to sort file contents\n";
if (output_capture) |capture| {
try capture.write(msg);
} else {
print("{s}", .{msg});
}
return CommandStatus{ .Code = 0 };
}
// Sort the lines
std.mem.sort([]const u8, lines.items, {}, struct {
fn lessThan(_: void, lhs: []const u8, rhs: []const u8) bool {
return std.mem.order(u8, lhs, rhs) == .lt;
}
}.lessThan);
// Output sorted lines
var output_buffer = ArrayList(u8).init(allocator);
defer output_buffer.deinit();
for (lines.items) |line| {
try output_buffer.writer().print("{s}\n", .{line});
}
if (output_capture) |capture| {
try capture.write(output_buffer.items);
} else {
print("{s}", .{output_buffer.items});
}
return CommandStatus{ .Code = 0 };
}
};
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