1 files changed, 72 insertions, 0 deletions
diff --git a/vendor/handlebars/src/helpers/helper_log.rs b/vendor/handlebars/src/helpers/helper_log.rs
new file mode 100644
index 000000000..5821efa35
--- /dev/null
+++ b/vendor/handlebars/src/helpers/helper_log.rs
@@ -0,0 +1,72 @@
+use crate::context::Context;
+#[cfg(not(feature = "no_logging"))]
+use crate::error::RenderError;
+use crate::helpers::{HelperDef, HelperResult};
+#[cfg(not(feature = "no_logging"))]
+use crate::json::value::JsonRender;
+use crate::output::Output;
+use crate::registry::Registry;
+use crate::render::{Helper, RenderContext};
+#[cfg(not(feature = "no_logging"))]
+use log::Level;
+#[cfg(not(feature = "no_logging"))]
+use std::str::FromStr;
+
+#[derive(Clone, Copy)]
+pub struct LogHelper;
+
+#[cfg(not(feature = "no_logging"))]
+impl HelperDef for LogHelper {
+    fn call<'reg: 'rc, 'rc>(
+        &self,
+        h: &Helper<'reg, 'rc>,
+        _: &'reg Registry<'reg>,
+        _: &'rc Context,
+        _: &mut RenderContext<'reg, 'rc>,
+        _: &mut dyn Output,
+    ) -> HelperResult {
+        let param_to_log = h
+            .params()
+            .iter()
+            .map(|p| {
+                if let Some(ref relative_path) = p.relative_path() {
+                    format!("{}: {}", relative_path, p.value().render())
+                } else {
+                    p.value().render()
+                }
+            })
+            .collect::<Vec<String>>()
+            .join(", ");
+
+        let level = h
+            .hash_get("level")
+            .and_then(|v| v.value().as_str())
+            .unwrap_or("info");
+
+        if let Ok(log_level) = Level::from_str(level) {
+            log!(log_level, "{}", param_to_log)
+        } else {
+            return Err(RenderError::new(&format!(
+                "Unsupported logging level {}",
+                level
+            )));
+        }
+        Ok(())
+    }
+}
+
+#[cfg(feature = "no_logging")]
+impl HelperDef for LogHelper {
+    fn call<'reg: 'rc, 'rc>(
+        &self,
+        _: &Helper<'reg, 'rc>,
+        _: &Registry<'reg>,
+        _: &Context,
+        _: &mut RenderContext<'reg, 'rc>,
+        _: &mut dyn Output,
+    ) -> HelperResult {
+        Ok(())
+    }
+}
+
+pub static LOG_HELPER: LogHelper = LogHelper;