fix: use 0-based index

Signed-off-by: usamoi <[email protected]>

Author: usamoi

src/datatype/text_svecf32.rs

@@ -48,10 +48,10 @@ fn _vectors_svecf32_out(vector: SVecf32Input<'_>) -> CString {
     for (&index, &value) in svec.indexes().iter().zip(svec.values().iter()) {
         match need_splitter {
             true => {
-                buffer.push_str(format!("{}:{}", index + 1, value).as_str());
+                buffer.push_str(format!("{}:{}", index, value).as_str());
                 need_splitter = false;
             }
-            false => buffer.push_str(format!(", {}:{}", index + 1, value).as_str()),
+            false => buffer.push_str(format!(", {}:{}", index, value).as_str()),
         }
     }
     buffer.push_str(format!("}}/{}", dims).as_str());

src/utils/parse.rs

@@ -165,8 +165,7 @@ where
                     let s = unsafe { std::str::from_utf8_unchecked(&token[1..]) };
                     index = s
                         .parse::<usize>()
-                        .map_err(|_| ParseVectorError::BadParsing { position })?
-                        - 1;
+                        .map_err(|_| ParseVectorError::BadParsing { position })?;
                     token.clear();
                 } else {
                     return Err(ParseVectorError::TooShortNumber { position });