Can create PDF posts

src/utils/mod.rs

@@ -6,4 +6,5 @@ pub mod crypt_utils;
 pub mod user_data_utils;
 pub mod virtual_directories_utils;
 pub mod date_utils;
-pub mod string_utils;
+pub mod string_utils;
+pub mod pdf_utils;

src/utils/pdf_utils.rs

@@ -0,0 +1,22 @@
+//! # PDF utilities
+//!
+//! @author Pierre Hubert
+
+use crate::data::error::{ExecError, ResultBoxError};
+
+/// Check out whether a PDF is a valid PDF or not, by trying to open it
+pub fn is_valid_pdf(file: &bytes::Bytes) -> ResultBoxError<bool> {
+    let pdf = pdf::file::File::new(Vec::from(file.as_ref()));
+
+    match pdf.get_num_pages() {
+        Ok(num) if num < 1 =>
+            Err(ExecError::boxed_string(format!("Detected a PDF with {} pages!", num))),
+
+        Ok(_) => Ok(true),
+
+        Err(e) => {
+            println!("Error while parsing PDF: {}", e);
+            Ok(false)
+        }
+    }
+}