feat(php-shim): implement hash, hash_raw, hash_file

Support md5, sha1, sha256, and xxh3 algorithms.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

2 files changed, 25 insertions, 6 deletions

diff --git a/crates/shirabe-php-shim/Cargo.toml b/crates/shirabe-php-shim/Cargo.toml
index bd285f5..4226234 100644
--- a/crates/shirabe-php-shim/Cargo.toml
+++ b/crates/shirabe-php-shim/Cargo.toml
@@ -8,11 +8,15 @@ anyhow.workspace = true
 chrono.workspace = true
 fastrand.workspace = true
 indexmap.workspace = true
+md5.workspace = true
 regex.workspace = true
 reqwest.workspace = true
 serde.workspace = true
 serde_json.workspace = true
 serde_urlencoded.workspace = true
+sha1.workspace = true
+sha2.workspace = true
+twox-hash.workspace = true
 zip.workspace = true
 
 [lints]
diff --git a/crates/shirabe-php-shim/src/hash.rs b/crates/shirabe-php-shim/src/hash.rs
index 45d53c0..6e12a81 100644
--- a/crates/shirabe-php-shim/src/hash.rs
+++ b/crates/shirabe-php-shim/src/hash.rs
@@ -1,11 +1,26 @@
-pub fn hash(_algo: &str, _data: &str) -> String {
-    todo!()
+use crate::bin2hex;
+use sha1::Digest as _;
+use sha2::Digest as _;
+
+pub fn hash(algo: &str, data: &str) -> String {
+    crate::bin2hex(&calculate_hash(algo, data.as_bytes()))
+}
+
+pub fn hash_raw(algo: &str, data: &str) -> Vec<u8> {
+    calculate_hash(algo, data.as_bytes())
 }
 
-pub fn hash_raw(_algo: &str, _data: &str) -> Vec<u8> {
-    todo!()
+pub fn hash_file(algo: &str, filename: impl AsRef<std::path::Path>) -> Option<String> {
+    let data = std::fs::read(filename).ok()?;
+    Some(bin2hex(&calculate_hash(algo, &data)))
 }
 
-pub fn hash_file(_algo: &str, _filename: &str) -> Option<String> {
-    todo!()
+fn calculate_hash(algo: &str, data: &[u8]) -> Vec<u8> {
+    match algo {
+        "md5" => md5::compute(data).0.to_vec(),
+        "sha1" => sha1::Sha1::digest(data).to_vec(),
+        "sha256" => sha2::Sha256::digest(data).to_vec(),
+        "xxh3" => twox_hash::XxHash3_64::oneshot(data).to_be_bytes().to_vec(),
+        _ => panic!("unsupported hash algorithm: {}", algo),
+    }
 }