[pve-devel] [PATCH installer v6 17/36] auto-installer: use glob crate for pattern matching

[Aaron Lauterer]

Tested-by: Christoph Heiss <c.heiss at proxmox.com>
Reviewed-by: Christoph Heiss <c.heiss at proxmox.com>
Signed-off-by: Aaron Lauterer <a.lauterer at proxmox.com>
---
 proxmox-auto-installer/Cargo.toml   |  1 +
 proxmox-auto-installer/src/utils.rs | 46 +++++++++++------------------
 2 files changed, 18 insertions(+), 29 deletions(-)

diff --git a/proxmox-auto-installer/Cargo.toml b/proxmox-auto-installer/Cargo.toml
index b1d3e7a..741794a 100644
--- a/proxmox-auto-installer/Cargo.toml
+++ b/proxmox-auto-installer/Cargo.toml
@@ -9,6 +9,7 @@ homepage = "https://www.proxmox.com"
 
 [dependencies]
 anyhow = "1.0"
+glob = "0.3"
 proxmox-installer-common = { path = "../proxmox-installer-common" }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
diff --git a/proxmox-auto-installer/src/utils.rs b/proxmox-auto-installer/src/utils.rs
index ae28b1e..6101d66 100644
--- a/proxmox-auto-installer/src/utils.rs
+++ b/proxmox-auto-installer/src/utils.rs
@@ -1,4 +1,5 @@
 use anyhow::{bail, Result};
+use glob::Pattern;
 use log::info;
 use std::{
     collections::BTreeMap,
@@ -15,29 +16,11 @@ use proxmox_installer_common::{
 };
 use serde::Deserialize;
 
-/// Supports the globbing character '*' at the beginning, end or both of the pattern.
-/// Globbing within the pattern is not supported
-fn find_with_glob(pattern: &str, value: &str) -> bool {
-    let globbing_symbol = '*';
-    let mut start_glob = false;
-    let mut end_glob = false;
-    let mut pattern = pattern;
-
-    if pattern.starts_with(globbing_symbol) {
-        start_glob = true;
-        pattern = &pattern[1..];
-    }
-
-    if pattern.ends_with(globbing_symbol) {
-        end_glob = true;
-        pattern = &pattern[..pattern.len() - 1]
-    }
-
-    match (start_glob, end_glob) {
-        (true, true) => value.contains(pattern),
-        (true, false) => value.ends_with(pattern),
-        (false, true) => value.starts_with(pattern),
-        _ => value == pattern,
+fn find_with_glob(pattern: &str, value: &str) -> Result<bool> {
+    let p = Pattern::new(pattern)?;
+    match p.matches(value) {
+        true => Ok(true),
+        false => Ok(false),
     }
 }
 
@@ -75,7 +58,7 @@ fn get_single_udev_index(
     'outer: for (dev, dev_values) in udev_list {
         for (filter_key, filter_value) in &filter {
             for (udev_key, udev_value) in dev_values {
-                if udev_key == filter_key && find_with_glob(filter_value, udev_value) {
+                if udev_key == filter_key && find_with_glob(filter_value, udev_value)? {
                     dev_index = Some(dev.clone());
                     break 'outer; // take first match
                 }
@@ -100,7 +83,7 @@ fn get_matched_udev_indexes(
         let mut did_match_all = true;
         for (filter_key, filter_value) in &filter {
             for (udev_key, udev_value) in dev_values {
-                if udev_key == filter_key && find_with_glob(filter_value, udev_value) {
+                if udev_key == filter_key && find_with_glob(filter_value, udev_value)? {
                     did_match_once = true;
                 } else if udev_key == filter_key {
                     did_match_all = false;
@@ -416,9 +399,14 @@ mod tests {
     #[test]
     fn test_glob_patterns() {
         let test_value = "foobar";
-        assert_eq!(find_with_glob("*bar", test_value), true);
-        assert_eq!(find_with_glob("foo*", test_value), true);
-        assert_eq!(find_with_glob("foobar", test_value), true);
-        assert_eq!(find_with_glob("oobar", test_value), false);
+        assert_eq!(find_with_glob("*bar", test_value).unwrap(), true);
+        assert_eq!(find_with_glob("foo*", test_value).unwrap(), true);
+        assert_eq!(find_with_glob("foobar", test_value).unwrap(), true);
+        assert_eq!(find_with_glob("oobar", test_value).unwrap(), false);
+        assert_eq!(find_with_glob("f*bar", test_value).unwrap(), true);
+        assert_eq!(find_with_glob("f?bar", test_value).unwrap(), false);
+        assert_eq!(find_with_glob("fo?bar", test_value).unwrap(), true);
+        assert_eq!(find_with_glob("f[!a]obar", test_value).unwrap(), true);
+        assert_eq!(find_with_glob("f[oa]obar", test_value).unwrap(), true);
     }
 }
-- 
2.39.2