build: switch to tracing for logging

Author: kanru

Cargo.lock

@@ -19,8 +19,8 @@ include = [
 
 [dependencies]
 der = { version = "0.7.7", features = ["std"] }
-log = { workspace = true }
 rusqlite = { version = ">= 0.28.0", optional = true }
+tracing = { workspace = true }
 
 [dev-dependencies]
 tempfile = { workspace = true }
@@ -29,15 +29,25 @@ tempfile = { workspace = true }
 default = []
 sqlite = ["dep:rusqlite"]
 sqlite-bundled = ["sqlite", "rusqlite/bundled"]
+log = ["tracing/log"]
 
 [workspace]
 members = ["capi", "fuzzer", "tests/testhelper", "tools"]
 resolver = "3"
 
 [workspace.dependencies]
-log = "0.4.21"
 tempfile = "3.10.1"
 
+[workspace.dependencies.tracing]
+version = "0.1.18"
+default-features = false
+features = ["std", "release_max_level_info"]
+
+[workspace.dependencies.tracing-subscriber]
+version = "0.3.0"
+default-features = false
+features = ["ansi", "fmt", "std"]
+
 [profile.release]
 lto = true
 opt-level = 3

Cargo.toml

@@ -38,6 +38,7 @@ What's New in libchewing (unreleased)
   - autolearn: new phrases with break words inside will be learned both with
     and without the break word.
   - rust: simplified dictionary API.
+  - rust: logging now depends on tracing and tracing-subscriber.
 
 * Dictionary
   - Default symbols.dat now includes commonly used emojis.

NEWS

@@ -11,8 +11,8 @@ crate-type = ["rlib", "staticlib"]
 
 [dependencies]
 chewing = { version = "0.11.0-alpha.6", path = ".." }
-env_logger = { version = ">= 0.11.0-alpha.6", default-features = false }
-log = { workspace = true }
+tracing = { workspace = true }
+tracing-subscriber = { workspace = true }
 
 [dev-dependencies]
 tempfile = { workspace = true }