Introduce zoneinfo64 crate (#6726)

Author: robertbastian

Cargo.lock

@@ -83,6 +83,7 @@ members = [
     "utils/zerotrie",
     "utils/zerovec",
     "utils/zerovec/derive",
+    "utils/zoneinfo64",
 
     # Tools
     "tools/benchmark/binsize",
@@ -195,6 +196,7 @@ fixed_decimal = { version = "0.7.0", path = "utils/fixed_decimal", default-featu
 ixdtf = { version = "0.6.0", path = "utils/ixdtf", default-features = false }
 litemap = { version = "0.8.0", path = "utils/litemap", default-features = false }
 potential_utf = { version = "0.1.1", path = "utils/potential_utf", default-features = false }
+resb = { version = "0.0.0", path = "utils/resb", default-features = false }
 tzif = { version = "0.4.0", path = "utils/tzif", default-features = false }
 tinystr = { version = "0.8.0", path = "utils/tinystr", default-features = false }
 writeable = { version = "0.6.0", path = "utils/writeable", default-features = false }
@@ -205,6 +207,7 @@ zerofrom-derive = { version = "0.1.3", path = "utils/zerofrom/derive", default-f
 zerotrie = { version = "0.2.0", path = "utils/zerotrie", default-features = false }
 zerovec = { version = "0.11.3-dev", path = "utils/zerovec", default-features = false }
 zerovec-derive = { version = "0.11.1", path = "utils/zerovec/derive", default-features = false }
+zoneinfo64 = { version = "0.0.0", path = "utils/zoneinfo64", default-features = false }
 
 # Tools
 icu_benchmark_macros = { path = "tools/benchmark/macros" }

Cargo.toml

@@ -267,4 +267,8 @@ impl PotentialUtf16 {
         // Safety: PotentialUtf16 is transparent over [u16]
         unsafe { core::mem::transmute(other) }
     }
+
+    pub fn chars(&self) -> impl Iterator<Item = char> + '_ {
+        char::decode_utf16(self.0.iter().copied()).map(|c| c.unwrap_or(char::REPLACEMENT_CHARACTER))
+    }
 }

utils/potential_utf/src/ustr.rs

@@ -5,7 +5,7 @@
 [package]
 name = "resb"
 description = "Utilities for reading and writing ICU resource bundle files"
-version = "0.1.0"
+version = "0.0.0"
 publish = false
 
 authors.workspace = true
@@ -27,10 +27,7 @@ indexmap = { workspace = true, optional = true }
 log = { workspace = true, optional = true }
 nom = { version = "7.0.0", optional = true }
 serde = { workspace = true, features = ["alloc"]}
-
-[dev-dependencies]
-serde = { workspace = true, features = ["derive"] }
-zerovec = { workspace = true, features = ["serde"] }
+potential_utf = { workspace = true }
 
 [features]
 default = []
@@ -45,8 +42,3 @@ name = "resb"
 [[example]]
 name = "genrb"
 required-features = ["serialize", "text"]
-
-[[example]]
-name = "time_zone_rule"
-# run in `cargo test`
-harness = false