const DAYS = 7;

const DAYS = 8;

    const day08 = @import("day08.zig");

    _ = @import("day08.zig");

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"\"oedr\"pwdbnnrc"
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"\"rivyxahf\""
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"\x81vhtlillb\xactgoatva"
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"f"
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"k"
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"sig"
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"irmrebfla\xefsg\"j"
"nep"
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"\"mjagins\xf9tqykaxy\""
"knvsdnmtr\"zervsb"
"hzuy"
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"lrqar\"dfqwkaaqifig\"uixjsz"
"\"azuo\x40rmnlhhluwsbbdb\x32pk\\yu\"pbcf"
"dplkdyty"
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"uxbp"
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"m"
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"qjoqx\\a"
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"pbe"
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"cbjm"
"pnn"
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"\"\\fdktlp"
"ncea"
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"\xbedovhxuipaohlcvkwtxwmpz\"ckaif\"r"
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"c"
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"iefheu\"uru\""
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"twaailoypu\"oas\"kpuuyedlaw\\\xb0vzt"
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"u\x3dfh\xd4yt"
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"gan\"y"
"p\"bevidoazcznr\"hddxuuq\""
"bwzucczznutbxe"
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"di\x58bvptfsafirpc"
"l\x1fkco"
"x"
"mprndo\"n"
"psegit"
"svbdnkkuuqs\"sqxu\"oqcyz\"aizashk"
"cwkljukxer\\\"\\nff\"esjwiyaoy"
"ilxrkgbjjxpvhdtq\"cpiuoofdnkpp"
"hlngi\"ulxep\\qohtmqnqjb\"rkgerho"
"gxws\"bcgm\"p"
"bv\"mds\\zhfusiepgrz\\b\x32fscdzz"
"l\xfampwtme\x69qvxnx\"\"\xc4jruuymjxrpsv"
"qqmxhrn"
"xziq\\\x18ybyv\x9am\"neacoqjzytertisysza"
"aqcbvlvcrzceeyx\\j\"\"x"
"yjuhhb"
"\x5em\"squulpy"
"dpbntplgmwb"
"utsgfkm\\vbftjknlktpthoeo"
"ccxjgiocmuhf\"ycnh"
"lltj\"kbbxi"

const std = @import("std");
const Str = []const u8;
const PATH = "input/day08.txt";
pub fn first(allocator: std.mem.Allocator) !usize {
    _ = allocator;
    var chars: usize = 0;
    var real_chars: usize = 0;
    var lines = std.mem.tokenize(u8, @embedFile(PATH), "\n");
    while (lines.next()) |line| {
        chars += line.len;
        real_chars += try realChars(line);
    }
    return chars - real_chars;
}
pub fn second(allocator: std.mem.Allocator) !usize {
    var chars: usize = 0;
    var encode_chars: usize = 0;
    var encoded = std.ArrayList(u8).init(allocator);
    defer encoded.deinit();
    var lines = std.mem.tokenize(u8, @embedFile(PATH), "\n");
    while (lines.next()) |line| {
        chars += line.len;
        try encoded.resize(0);
        try encodeString(&encoded, line);
        encode_chars += encoded.items.len + 2; // leading and trailing double-quotes
    }
    return encode_chars - chars;
}
fn realChars(line: Str) !usize {
    var ret: usize = 0;
    var idx: usize = 0;
    while (idx < line.len) : (idx += 1) {
        switch (line[idx]) {
            '"' => {},
            '\\' => {
                if (line[idx + 1] == '"' or line[idx + 1] == '\\') {
                    ret += 1;
                    idx += 1;
                } else if (line[idx + 1] == 'x') {
                    ret += 1;
                    idx += 3;
                }
            },
            else => ret += 1,
        }
    }
    return ret;
}
fn encodeString(encoded: *std.ArrayList(u8), raw: Str) !void {
    var idx: usize = 0;
    while (idx < raw.len) : (idx += 1) {
        switch (raw[idx]) {
            '"' => {
                try encoded.appendSlice("\\\"");
            },
            '\\' => {
                try encoded.appendSlice("\\\\");
            },
            else => try encoded.append(raw[idx]),
        }
    }
}
const test_input =
    \\""
    \\"abc"
    \\"aaa\"aaa"
    \\"\x27"
;
test "day08a" {
    try std.testing.expectEqual(@as(usize, 1333), try first(std.testing.allocator));
}
test "day08b" {
    try std.testing.expectEqual(@as(usize, 2046), try second(std.testing.allocator));
}