Merge branch 'wip/sophie-h/workspace' into 'main'

meta: Move lib and bins into separate crates

Closes #950

See merge request GNOME/librsvg!822

1 files changed, 44 insertions, 0 deletions

diff --git a/rsvg/src/session.rs b/rsvg/src/session.rs
new file mode 100644
index 00000000..fe556cef
--- /dev/null
+++ b/rsvg/src/session.rs
@@ -0,0 +1,44 @@
+//! Tracks metadata for a loading/rendering session.
+
+use std::sync::Arc;
+
+/// Metadata for a loading/rendering session.
+///
+/// When the calling program first uses one of the API entry points (e.g. `Loader::new()`
+/// in the Rust API, or `rsvg_handle_new()` in the C API), there is no context yet where
+/// librsvg's code may start to track things.  This struct provides that context.
+#[derive(Clone)]
+pub struct Session {
+    inner: Arc<SessionInner>,
+}
+
+struct SessionInner {
+    log_enabled: bool,
+}
+
+fn log_enabled_via_env_var() -> bool {
+    ::std::env::var_os("RSVG_LOG").is_some()
+}
+
+impl Default for Session {
+    fn default() -> Self {
+        Self {
+            inner: Arc::new(SessionInner {
+                log_enabled: log_enabled_via_env_var(),
+            }),
+        }
+    }
+}
+
+impl Session {
+    #[cfg(test)]
+    pub fn new_for_test_suite() -> Self {
+        Self {
+            inner: Arc::new(SessionInner { log_enabled: false }),
+        }
+    }
+
+    pub fn log_enabled(&self) -> bool {
+        self.inner.log_enabled
+    }
+}