From ff32088cffa839acd41b68fdce1db1d6c7fd6165 Mon Sep 17 00:00:00 2001
From: Jesse Luehrs <doy@tozt.net>
Date: Tue, 1 Dec 2020 22:35:23 -0500
Subject: puzzle 1-1

---
 .rustfmt.toml   |   1 +
 Cargo.lock      | 271 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml      |   3 +
 data/1-1.txt    | 200 +++++++++++++++++++++++++++++++++++++++++
 src/2020/mod.rs |  33 +++++++
 src/main.rs     |  24 ++++-
 6 files changed, 530 insertions(+), 2 deletions(-)
 create mode 100644 .rustfmt.toml
 create mode 100644 Cargo.lock
 create mode 100644 data/1-1.txt
 create mode 100644 src/2020/mod.rs

diff --git a/.rustfmt.toml b/.rustfmt.toml
new file mode 100644
index 0000000..bcad605
--- /dev/null
+++ b/.rustfmt.toml
@@ -0,0 +1 @@
+max_width = 78
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..c55b2a0
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,271 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "advent-of-code"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "paw",
+ "structopt",
+]
+
+[[package]]
+name = "ansi_term"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "anyhow"
+version = "1.0.34"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf8dcb5b4bbaa28653b647d8c77bd4ed40183b48882e130c1f1ffb73de069fd7"
+
+[[package]]
+name = "atty"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
+dependencies = [
+ "hermit-abi",
+ "libc",
+ "winapi",
+]
+
+[[package]]
+name = "bitflags"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
+
+[[package]]
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+checksum = "37e58ac78573c40708d45522f0d80fa2f01cc4f9b4e2bf749807255454312002"
+dependencies = [
+ "ansi_term",
+ "atty",
+ "bitflags",
+ "strsim",
+ "term_size",
+ "textwrap",
+ "unicode-width",
+ "vec_map",
+]
+
+[[package]]
+name = "heck"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "20564e78d53d2bb135c343b3f47714a56af2061f1c928fdb541dc7b9fdd94205"
+dependencies = [
+ "unicode-segmentation",
+]
+
+[[package]]
+name = "hermit-abi"
+version = "0.1.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5aca5565f760fb5b220e499d72710ed156fdb74e631659e99377d9ebfbd13ae8"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
+[[package]]
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+[[package]]
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+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09c0fc9b564dbc3dc2ed7c92c0c144f4de340aa94514ce2b446065417c4084e9"
+dependencies = [
+ "paw-attributes",
+ "paw-raw",
+]
+
+[[package]]
+name = "paw-attributes"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0f35583365be5d148e959284f42526841917b7bfa09e2d1a7ad5dde2cf0eaa39"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
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+
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+checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
+dependencies = [
+ "proc-macro-error-attr",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "version_check",
+]
+
+[[package]]
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+dependencies = [
+ "proc-macro2",
+ "quote",
+ "version_check",
+]
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e0704ee1a7e00d7bb417d0770ea303c1bccbabf0ef1667dae92b5967f5f8a71"
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+ "unicode-xid",
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+
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+dependencies = [
+ "proc-macro2",
+]
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+name = "strsim"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "clap",
+ "lazy_static",
+ "paw",
+ "structopt-derive",
+]
+
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+dependencies = [
+ "heck",
+ "proc-macro-error",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
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+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-xid",
+]
+
+[[package]]
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+ "libc",
+ "winapi",
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+dependencies = [
+ "term_size",
+ "unicode-width",
+]
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+[[package]]
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+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
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diff --git a/Cargo.toml b/Cargo.toml
index 617ddc3..ad1246e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,3 +7,6 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+anyhow = "1.0"
+paw = "1.0"
+structopt = { version = "0.3", features = ["paw", "wrap_help"] }
diff --git a/data/1-1.txt b/data/1-1.txt
new file mode 100644
index 0000000..15a9273
--- /dev/null
+++ b/data/1-1.txt
@@ -0,0 +1,200 @@
+1511
+1344
+1925
+1970
+1864
+1951
+1557
+1984
+1743
+1526
+1972
+1945
+1969
+1760
+2008
+1592
+736
+1963
+1994
+2009
+1777
+1856
+1899
+1926
+1850
+687
+2005
+1094
+1949
+1326
+2002
+1805
+1493
+1341
+1828
+1778
+1767
+1364
+1973
+1768
+1929
+1377
+2000
+1726
+1913
+2001
+1574
+1859
+1793
+1957
+1959
+1388
+1593
+1392
+724
+1962
+1999
+252
+1982
+1662
+1892
+1610
+1343
+1831
+1862
+1991
+1394
+1946
+1935
+1986
+1911
+1358
+1322
+1956
+1988
+1758
+1490
+1998
+1744
+1844
+1294
+1764
+1543
+1560
+1562
+1747
+1870
+1292
+1989
+1752
+1471
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+1897
+1544
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+1375
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+1742
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+1479
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+1934
+1939
+1950
+1992
+1983
+1474
+1643
+2010
+1814
+1942
+322
+1425
+1646
+1878
+1410
+1927
+1761
+1948
+1779
+1753
+1847
+274
+1659
+1773
+1960
+1772
+1674
+1809
+1568
+1978
+1952
+1947
+1976
+1953
+1961
+1937
+1932
+1781
+2007
+1941
+1393
+1573
+1745
+169
+89
+1408
+1974
+1810
+1979
+1967
+890
+1958
+1930
+1954
+1759
+720
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+1576
+1407
+2004
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+1462
+1875
+1943
+1938
+2006
+1739
+1378
+1922
+1924
+2003
+1792
+1985
+1729
+1966
+1355
+1940
+1928
+1357
+1955
+1896
+1115
+1836
+1971
+1329
+1807
+1997
+1359
+1801
+1933
+1965
+1981
+1711
+1905
+1625
+1968
diff --git a/src/2020/mod.rs b/src/2020/mod.rs
new file mode 100644
index 0000000..87c213b
--- /dev/null
+++ b/src/2020/mod.rs
@@ -0,0 +1,33 @@
+use anyhow::Context as _;
+use std::io::BufRead as _;
+
+pub fn run(day: u8, puzzle: u8) -> anyhow::Result<()> {
+    match (day, puzzle) {
+        (1, 1) => report_repair(),
+        _ => Err(anyhow::anyhow!("unknown puzzle {}-{}", day, puzzle)),
+    }
+}
+
+fn report_repair() -> anyhow::Result<()> {
+    let f = std::fs::File::open("data/1-1.txt")
+        .context("couldn't find data file")?;
+    let f = std::io::BufReader::new(f);
+    let ints: anyhow::Result<Vec<i32>> = f
+        .lines()
+        .map(|l| {
+            l.context("failed to read a line")?
+                .parse()
+                .context("failed to parse line into an integer")
+        })
+        .collect();
+    let ints = ints?;
+    for i in &ints {
+        for j in &ints {
+            if i + j == 2020 {
+                println!("{} + {} = {}", i, j, i * j);
+                return Ok(());
+            }
+        }
+    }
+    Err(anyhow::anyhow!("no numbers summing to 2020 found"))
+}
diff --git a/src/main.rs b/src/main.rs
index e7a11a9..b8677cb 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,23 @@
-fn main() {
-    println!("Hello, world!");
+#[path = "2020/mod.rs"]
+mod year2020;
+
+#[derive(Debug, structopt::StructOpt)]
+#[structopt(about = "Advent of Code")]
+enum Opt {
+    #[structopt(name = "2020")]
+    Year2020 { day: u8, puzzle: u8 },
+}
+
+#[paw::main]
+fn main(opt: Opt) {
+    let res = match opt {
+        Opt::Year2020 { day, puzzle } => crate::year2020::run(day, puzzle),
+    };
+    match res {
+        Ok(()) => {}
+        Err(e) => {
+            eprintln!("{}", e);
+            std::process::exit(1);
+        }
+    }
 }
-- 
cgit v1.2.3-54-g00ecf