Add overlap checking

1 files changed, 12 insertions, 5 deletions

diff --git a/src/zip/error.rs b/src/zip/error.rs
index 87cd9e9..dbb6bb5 100644
--- a/src/zip/error.rs
+++ b/src/zip/error.rs
@@ -9,9 +9,11 @@ pub enum ZipError {
     Io(IoError),
 
     EocdrNotFound,
-    InvalidEOCDR64Signature,
+    InvalidEocdr64Signature,
     InvalidFileHeaderSignature,
-    InvalidCDRSignature,
+    InvalidCdrSignature,
+
+    Overlapping(&'static str, &'static str),
 
     UnsupportedCompressionMethod(u16),
     UnsupportedEncryptionMethod,
@@ -53,8 +55,9 @@ impl Display for ZipError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
             Self::Io(error) => write!(f, "{}", error),
+
             Self::EocdrNotFound => write!(f, "End of central directory record not found"),
-            Self::InvalidEOCDR64Signature => {
+            Self::InvalidEocdr64Signature => {
                 write!(
                     f,
                     "Invalid signature of zip64 end of central directory record"
@@ -63,12 +66,16 @@ impl Display for ZipError {
             Self::InvalidFileHeaderSignature => {
                 write!(f, "Invalid file header signature")
             }
-            Self::InvalidCDRSignature => {
+            Self::InvalidCdrSignature => {
                 write!(f, "Invalid signature of central directory record")
             }
 
+            Self::Overlapping(struct1, struct2) => {
+                write!(f, "`{}` overlapt `{}`", struct1, struct2)
+            }
+
             Self::UnsupportedCompressionMethod(id) => {
-                writeln!(f, "Unsupported compression method {}", id)
+                writeln!(f, "Unsupported compression method `{}`", id)
             }
             Self::UnsupportedEncryptionMethod => {
                 writeln!(f, "Unsupported encryption method")