Make columns indices 1-based in the text output format (#539)

src/linter.rs

@@ -141,13 +141,7 @@ pub fn lint_stdin(
     // Convert to messages.
     Ok(checks
         .into_iter()
-        .map(|check| Message {
-            kind: check.kind,
-            fixed: check.fix.map(|fix| fix.applied).unwrap_or_default(),
-            location: check.location,
-            end_location: check.end_location,
-            filename: path.to_string_lossy().to_string(),
-        })
+        .map(|check| Message::from_check(path.to_string_lossy().to_string(), check))
         .collect())
 }
 
@@ -189,13 +183,7 @@ pub fn lint_path(
     // Convert to messages.
     let messages: Vec<Message> = checks
         .into_iter()
-        .map(|check| Message {
-            kind: check.kind,
-            fixed: check.fix.map(|fix| fix.applied).unwrap_or_default(),
-            location: check.location,
-            end_location: check.end_location,
-            filename: path.to_string_lossy().to_string(),
-        })
+        .map(|check| Message::from_check(path.to_string_lossy().to_string(), check))
         .collect();
     #[cfg(not(target_family = "wasm"))]
     cache::set(path, &metadata, settings, autofix, &messages, mode);

src/message.rs

@@ -6,7 +6,7 @@ use colored::Colorize;
 use rustpython_parser::ast::Location;
 use serde::{Deserialize, Serialize};
 
-use crate::checks::CheckKind;
+use crate::checks::{Check, CheckKind};
 use crate::fs::relativize_path;
 
 #[derive(Debug, PartialEq, Eq, Serialize, Deserialize)]
@@ -18,6 +18,18 @@ pub struct Message {
     pub filename: String,
 }
 
+impl Message {
+    pub fn from_check(filename: String, check: Check) -> Self {
+        Self {
+            kind: check.kind,
+            fixed: check.fix.map(|fix| fix.applied).unwrap_or_default(),
+            location: Location::new(check.location.row(), check.location.column() + 1),
+            end_location: Location::new(check.end_location.row(), check.end_location.column() + 1),
+            filename,
+        }
+    }
+}
+
 impl Ord for Message {
     fn cmp(&self, other: &Self) -> Ordering {
         (&self.filename, self.location.row(), self.location.column()).cmp(&(

tests/integration_test.rs

@@ -18,7 +18,7 @@ fn test_stdin_error() -> Result<()> {
         .write_stdin("import os\n")
         .assert()
         .failure();
-    assert!(str::from_utf8(&output.get_output().stdout)?.contains("-:1:0: F401"));
+    assert!(str::from_utf8(&output.get_output().stdout)?.contains("-:1:1: F401"));
     Ok(())
 }
 
@@ -30,7 +30,7 @@ fn test_stdin_filename() -> Result<()> {
         .write_stdin("import os\n")
         .assert()
         .failure();
-    assert!(str::from_utf8(&output.get_output().stdout)?.contains("F401.py:1:0: F401"));
+    assert!(str::from_utf8(&output.get_output().stdout)?.contains("F401.py:1:1: F401"));
     Ok(())
 }