get_urls_from_pdf: Extract link annotation check to a function

Give this condition a more descriptive name.

1 files changed, 6 insertions, 1 deletions

diff --git a/src/lib.rs b/src/lib.rs
index 227911a..fb0b75d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -23,7 +23,7 @@ pub fn get_urls_from_pdf<P: AsRef<Path>>(path: P) -> Result<Vec<String>> {
                 for (k, v) in d.iter() {
                     let key = str::from_utf8(&k)?;
 
-                    if key == "A" {
+                    if object_is_link_annotation(key) {
                         let url_objects = v.as_dict()?;
 
                         for (k, v) in url_objects {
@@ -50,6 +50,11 @@ pub fn get_urls_from_pdf<P: AsRef<Path>>(path: P) -> Result<Vec<String>> {
     Ok(urls)
 }
 
+/// Returns true if the given PDF object key is a link annotation.
+fn object_is_link_annotation(key: &str) -> bool {
+    key == "A"
+}
+
 
 #[cfg(test)]
 mod tests {