Merge pull request #412 from dezgeg/uucore_parse_size

lscpu: Use parse_size from uucore

Cargo.lock

@@ -85,6 +85,19 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ace50bade8e6234aa140d9a2f552bbee1db4d353f69b8217bc503490fc1a9f26"
 
+[[package]]
+name = "bigdecimal"
+version = "0.4.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a22f228ab7a1b23027ccc6c350b72868017af7ea8356fbdf19f8d991c690013"
+dependencies = [
+ "autocfg",
+ "libm",
+ "num-bigint",
+ "num-integer",
+ "num-traits",
+]
+
 [[package]]
 name = "bindgen"
 version = "0.71.1"
@@ -599,6 +612,12 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "libm"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f9fbbcab51052fe104eb5e5d351cf728d30a5be1fe14d9be8a3b097481fb97de"
+
 [[package]]
 name = "libmount-sys"
 version = "0.1.1"
@@ -691,12 +710,31 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "num-bigint"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a5e44f723f1133c9deac646763579fdb3ac745e418f2a7af9cd0c431da1f20b9"
+dependencies = [
+ "num-integer",
+ "num-traits",
+]
+
 [[package]]
 name = "num-conv"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "51d515d32fb182ee37cda2ccdcb92950d6a3c2893aa280e540671c2cd0f3b1d9"
 
+[[package]]
+name = "num-integer"
+version = "0.1.46"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7969661fd2958a5cb096e56c8e1ad0444ac2bbcd0061bd28660485a44879858f"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "num-traits"
 version = "0.2.19"
@@ -1549,15 +1587,18 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7203e48e80ac344450cba5323d8b4a71967ec1e81ae4022775ada90d2b0e08ac"
 dependencies = [
+ "bigdecimal",
  "bstr",
  "clap",
  "dns-lookup",
  "fluent",
  "fluent-bundle",
  "fluent-syntax",
+ "glob",
  "jiff",
  "libc",
  "nix",
+ "num-traits",
  "number_prefix",
  "os_display",
  "thiserror",

src/uu/lscpu/Cargo.toml

@@ -13,7 +13,7 @@ path = "src/main.rs"
 [dependencies]
 regex = { workspace = true }
 sysinfo = { workspace = true }
-uucore = { workspace = true }
+uucore = { workspace = true, features = ["parser"] }
 clap = { workspace = true }
 serde = { workspace = true }
 serde_json = { workspace = true }

src/uu/lscpu/src/sysfs.rs

@@ -4,6 +4,7 @@
 // file that was distributed with this source code.
 
 use std::{collections::HashSet, fs, path::PathBuf};
+use uucore::parser::parse_size;
 
 pub struct CpuVulnerability {
     pub name: String,
@@ -93,25 +94,7 @@ impl CacheSize {
     }
 
     fn parse(s: &str) -> Self {
-        // Yes, this will break if we ever reach a point where caches exceed terabytes in size...
-        const EXPONENTS: [(char, u32); 4] = [('K', 1), ('M', 2), ('G', 3), ('T', 4)];
-
-        // If we only have numbers, treat it as a raw amount of bytes and parse as-is
-        if s.chars().all(char::is_numeric) {
-            return Self(s.parse::<u64>().expect("Could not parse cache size"));
-        };
-
-        for (suffix, exponent) in EXPONENTS {
-            if s.ends_with(suffix) {
-                let nums = s.strip_suffix(suffix).unwrap();
-                let value = nums.parse::<u64>().expect("Could not parse cache size");
-                let multiplier = 1024_u64.pow(exponent);
-
-                return Self(value * multiplier);
-            }
-        }
-
-        panic!("No known suffix in cache size string");
+        Self(parse_size::parse_size_u64(s).expect("Could not parse cache size"))
     }
 
     pub fn size_bytes(&self) -> u64 {