Feat: add in stdio read

following the tutorial for this.
Feat: Add word counter binary.
2025-06-11 11:36:03 -04:00 · 2025-06-11 11:25:34 -04:00 · 2025-06-11 11:20:34 -04:00 · 2025-06-09 13:59:36 -04:00 · 2025-06-09 13:39:41 -04:00 · 2025-06-09 13:36:50 -04:00
7 changed files with 624 additions and 27 deletions
@@ -2,6 +2,15 @@
 # It is not intended for manual editing.
 version = 4

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+checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "anstream"
 version = "0.6.19"
@@ -52,6 +61,72 @@ dependencies = [
 "windows-sys",
 ]

+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
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+dependencies = [
+ "anstyle",
+ "bstr",
+ "doc-comment",
+ "libc",
+ "predicates",
+ "predicates-core",
+ "predicates-tree",
+ "wait-timeout",
+]
+
+[[package]]
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+dependencies = [
+ "anstyle",
+ "doc-comment",
+ "globwalk",
+ "predicates",
+ "predicates-core",
+ "predicates-tree",
+ "tempfile",
+]
+
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+
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+ "memchr",
+ "regex-automata",
+ "serde",
+]
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+
 [[package]]
 name = "clap"
 version = "4.5.39"
@@ -98,11 +173,138 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b05b61dc5112cbb17e4b6cd61790d9845d13888356391624cbe7e41efeac1e75"

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+ "crossbeam-epoch",
+ "crossbeam-utils",
+]
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+ "jiff",
+ "log",
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+ "windows-sys",
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+dependencies = [
+ "num-traits",
+]
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+dependencies = [
+ "cfg-if",
+ "libc",
+ "r-efi",
+ "wasi",
+]
+
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+dependencies = [
+ "aho-corasick",
+ "bstr",
+ "log",
+ "regex-automata",
+ "regex-syntax",
+]
+
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+ "walkdir",
+]
+
 [[package]]
 name = "grrs"
 version = "0.1.0"
 dependencies = [
+ "anyhow",
+ "assert_cmd",
+ "assert_fs",
 "clap",
+ "env_logger",
+ "log",
+ "predicates",
 ]

 [[package]]
@@ -111,18 +313,148 @@ version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"

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+checksum = "6d89fd380afde86567dfba715db065673989d6253f42b88179abd3eae47bda4b"
+dependencies = [
+ "crossbeam-deque",
+ "globset",
+ "log",
+ "memchr",
+ "regex-automata",
+ "same-file",
+ "walkdir",
+ "winapi-util",
+]
+
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+ "portable-atomic",
+ "portable-atomic-util",
+ "serde",
+]
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+ "syn",
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+dependencies = [
+ "portable-atomic",
+]
+
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+dependencies = [
+ "anstyle",
+ "difflib",
+ "float-cmp",
+ "normalize-line-endings",
+ "predicates-core",
+ "regex",
+]
+
+[[package]]
+name = "predicates-core"
+version = "1.0.9"
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+checksum = "727e462b119fe9c93fd0eb1429a5f7647394014cf3c04ab2c0350eeb09095ffa"
+
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+checksum = "72dd2d6d381dfb73a193c7fca536518d7caee39fc8503f74e7dc0be0531b425c"
+dependencies = [
+ "predicates-core",
+ "termtree",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.95"
@@ -141,6 +473,83 @@ dependencies = [
 "proc-macro2",
 ]

+[[package]]
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+version = "5.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
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+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.4.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
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+dependencies = [
+ "bitflags",
+ "errno",
+ "libc",
+ "linux-raw-sys",
+ "windows-sys",
+]
+
+[[package]]
+name = "same-file"
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+dependencies = [
+ "winapi-util",
+]
+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5f0e2c6ed6606019b4e29e69dbaba95b11854410e5347d525002456dbbb786b6"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "strsim"
 version = "0.11.1"
@@ -158,6 +567,25 @@ dependencies = [
 "unicode-ident",
 ]

+[[package]]
+name = "tempfile"
+version = "3.20.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e8a64e3985349f2441a1a9ef0b853f869006c3855f2cda6862a94d26ebb9d6a1"
+dependencies = [
+ "fastrand",
+ "getrandom",
+ "once_cell",
+ "rustix",
+ "windows-sys",
+]
+
+[[package]]
+name = "termtree"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f50febec83f5ee1df3015341d8bd429f2d1cc62bcba7ea2076759d315084683"
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.18"
@@ -170,6 +598,43 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"

+[[package]]
+name = "wait-timeout"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09ac3b126d3914f9849036f826e054cbabdc8519970b8998ddaf3b5bd3c65f11"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "walkdir"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "29790946404f91d9c5d06f9874efddea1dc06c5efe94541a7d6863108e3a5e4b"
+dependencies = [
+ "same-file",
+ "winapi-util",
+]
+
+[[package]]
+name = "wasi"
+version = "0.14.2+wasi-0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9683f9a5a998d873c0d21fcbe3c083009670149a8fab228644b8bd36b2c48cb3"
+dependencies = [
+ "wit-bindgen-rt",
+]
+
+[[package]]
+name = "winapi-util"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf221c93e13a30d793f7645a0e7762c55d169dbb0a49671918a2319d289b10bb"
+dependencies = [
+ "windows-sys",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.59.0"
@@ -242,3 +707,12 @@ name = "windows_x86_64_msvc"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
+
+[[package]]
+name = "wit-bindgen-rt"
+version = "0.39.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f42320e61fe2cfd34354ecb597f86f413484a798ba44a8ca1165c58d42da6c1"
+dependencies = [
+ "bitflags",
+]
@@ -4,4 +4,12 @@ version = "0.1.0"
 edition = "2021"

 [dependencies]
+anyhow = "1.0.98"
 clap = { version = "4.5.39", features = ["derive"] }
+env_logger = "0.11.8"
+log = "0.4.27"
+
+[dev-dependencies]
+assert_cmd = "2.0.17"
+assert_fs = "1.1.3"
+predicates = "3.1.3"
@@ -0,0 +1,42 @@
+use clap::{CommandFactory, Parser};
+use std::{
+    fs::File,
+    io::{stdin, BufRead, BufReader, IsTerminal},
+    path::PathBuf,
+};
+
+/// Count the number of lines in a file
+#[derive(Parser)]
+#[command(arg_required_else_help = true)]
+struct Cli {
+    /// The path to the file to read, use - to read from stdin (must not be a tty)
+    file: PathBuf,
+}
+
+fn main() {
+    let args = Cli::parse();
+    let word_count;
+    let mut file = args.file;
+
+    if file == PathBuf::from("-") {
+        if stdin().is_terminal() {
+            Cli::command().print_help().unwrap();
+            ::std::process::exit(2);
+        }
+
+        file = PathBuf::from("<stdin>");
+        word_count = words_in_buf_reader(BufReader::new(stdin().lock()));
+    } else {
+        word_count = words_in_buf_reader(BufReader::new(File::open(&file).unwrap()));
+    }
+
+    println!("Words in {}: {}", file.to_string_lossy(), word_count)
+}
+
+fn words_in_buf_reader<R: BufRead>(buf_reader: R) -> usize {
+    let mut count = 0;
+    for line in buf_reader.lines() {
+        count += line.unwrap().split(' ').count()
+    }
+    count
+}
@@ -0,0 +1,37 @@
+use anyhow::{Context, Result};
+use clap::Parser;
+use log::info;
+
+// Search for a pattern in a file and display the lines that contain it.
+#[derive(Parser)]
+struct Cli {
+    pattern: String,
+    path: std::path::PathBuf,
+}
+
+fn main() -> Result<()> {
+    env_logger::init();
+    info!("starting up");
+    let args = Cli::parse();
+
+    let content = std::fs::read_to_string(&args.path)
+        .with_context(|| format!("could not read file `{}`.", args.path.display()))?;
+
+    grrs::find_matches(
+        content.as_str(),
+        args.pattern.as_str(),
+        &mut std::io::stdout(),
+    )?;
+
+    Ok(())
+}
+
+#[allow(dead_code)]
+fn answer() -> i32 {
+    return 42;
+}
+
+#[test]
+fn check_answer_validity() {
+    assert_eq!(answer(), 42);
+}
@@ -0,0 +1,18 @@
+use anyhow::Result;
+
+pub fn find_matches(content: &str, pattern: &str, mut writer: impl std::io::Write) -> Result<()> {
+    for line in content.lines() {
+        if line.contains(pattern) {
+            writeln!(writer, "{}", line)?;
+        }
+    }
+    Ok(())
+}
+
+#[test]
+fn find_a_match() -> Result<(), Box<dyn std::error::Error>> {
+    let mut result = Vec::new();
+    find_matches("lorem ipsum\ndolar sit amet", "lorem", &mut result)?;
+    assert_eq!(result, b"lorem ipsum\n");
+    Ok(())
+}
@@ -1,27 +0,0 @@
-use clap::Parser;
-use std::fs::File;
-use std::io::{BufRead, BufReader};
-
-// Search for a pattern in a file and display the lines that contain it.
-#[derive(Parser)]
-struct Cli {
-    pattern: String,
-    path: std::path::PathBuf,
-}
-
-fn main() -> std::io::Result<()> {
-    let args = Cli::parse();
-
-    let f = File::open(&args.path)?;
-    let mut reader = BufReader::new(f);
-    let mut line = String::new();
-
-    while reader.read_line(&mut line)? > 0 {
-        if line.contains(&args.pattern) {
-            println!("{}", line)
-        }
-        line.clear();
-    }
-
-    Ok(())
-}
@@ -0,0 +1,45 @@
+use assert_cmd::prelude::*; // Add methods on commands
+use assert_fs::prelude::*;
+use predicates::prelude::*; // Used for writing assertions
+use std::process::Command; // Run programs
+
+#[test]
+fn file_doesnt_exist() -> Result<(), Box<dyn std::error::Error>> {
+    let mut cmd = Command::cargo_bin("grrs")?;
+
+    cmd.arg("foobar").arg("test/file/doesnt/exist");
+    cmd.assert()
+        .failure()
+        .stderr(predicate::str::contains("could not read file"));
+
+    Ok(())
+}
+
+#[test]
+fn find_content_in_file() -> Result<(), Box<dyn std::error::Error>> {
+    let file = assert_fs::NamedTempFile::new("sample.txt")?;
+    file.write_str("A test\nActual content\nMore content\nAnother test")?;
+
+    let mut cmd = Command::cargo_bin("grrs")?;
+    cmd.arg("test").arg(file.path());
+    cmd.assert()
+        .success()
+        .stdout(predicate::str::contains("A test\nAnother test"));
+
+    Ok(())
+}
+
+#[test]
+fn find_empty_string() -> Result<(), Box<dyn std::error::Error>> {
+    let file = assert_fs::NamedTempFile::new("sample.txt")?;
+    let content = "A test\nActual content\nMore content\nAnother test";
+    file.write_str(content)?;
+
+    let mut cmd = Command::cargo_bin("grrs")?;
+    cmd.arg("").arg(file.path());
+    cmd.assert()
+        .success()
+        .stdout(predicate::str::contains(content));
+
+    Ok(())
+}
Author	SHA1	Message	Date
Ian Rettig	4f1f96c108	Feat: add in stdio read following the tutorial for this.	2025-06-11 11:36:03 -04:00
Ian Rettig	0f24dd22a7	Feat: Add word counter binary.	2025-06-11 11:25:34 -04:00
Ian Rettig	28d6c8cccd	Move main to grrs in bin directory.	2025-06-11 11:20:34 -04:00
Ian Rettig	28373951f4	Feat: Add test case covering empty string.	2025-06-09 13:59:36 -04:00
Ian Rettig	41a2027624	Feat: Add test for finding content in file.	2025-06-09 13:39:41 -04:00
Ian Rettig	5a515fc5ed	Add: assert_fs crate.	2025-06-09 13:36:50 -04:00
Ian Rettig	f8ba601721	Feat: Add integration test for file not exist.	2025-06-09 13:35:16 -04:00
Ian Rettig	1841e2287a	Add: assert_cmd and predicates are dev crates.	2025-06-09 13:32:29 -04:00
Ian Rettig	946f4a5466	Feat: move find_matches to a library.	2025-06-09 13:32:16 -04:00
Ian Rettig	bcb4cba5e1	Feat: Add erroor handling to find_matches.	2025-06-09 13:16:29 -04:00
Ian Rettig	bbf4da2859	Feat: Add test case for find_matches Slight find_matches rewrite to use Write trait.	2025-06-09 11:58:43 -04:00
Ian Rettig	7cca8410e1	Feat: extract find_matches into own function.	2025-06-09 11:47:23 -04:00
Ian Rettig	ec63f6f022	Feat: Add small test case for practice.	2025-06-09 11:43:17 -04:00
Ian Rettig	0117b99006	Feat: add in logger.	2025-06-09 11:36:59 -04:00
Ian Rettig	6af058de3b	Add: env_logger crate.	2025-06-09 11:32:54 -04:00
Ian Rettig	9f094d57b2	Add: log crate.	2025-06-09 11:31:24 -04:00
Ian Rettig	aac29186bf	Feat: use anyhow for error reporting. I don't think that the error will properly be reported due to only printing lines that match the pattern.	2025-06-09 10:58:24 -04:00
Ian Rettig	5c396c8adc	Add: anyhow package.	2025-06-09 09:57:33 -04:00
Ian Rettig	f9418783d4	Feat: Add custom error message.	2025-06-06 17:50:44 -04:00
Ian Rettig	d7d2c74b23	Feat: question mark unwrap.	2025-06-06 17:02:32 -04:00
Ian Rettig	d41577ef7d	Feat: return error in unwrap.	2025-06-06 17:00:21 -04:00
Ian Rettig	3ff1454fb6	Feat: Use unwrapping for error handling.	2025-06-06 16:55:57 -04:00
Ian Rettig	a663f2b4d8	Feat: set up manual error handling.	2025-06-06 14:46:21 -04:00