dart_to_csv: remove multiline translation support

Multiline translations is a bad practice and should not be supported.
Also the multiline support was causing problems when parsing standard
translations. Fixed the dart_to_csv generation.

Signed-off-by: Andrea Ricchi <[email protected]>

src/dart_to_csv.rs

@@ -21,21 +21,14 @@ fn read_file(path: String) -> Vec<String> {
     let mut translations = Vec::new();
 
     if let Ok(lines) = read_lines(path) {
-        let mut previous_line = String::new();
-
         for ip in lines.flatten() {
-            let start_bytes = ip.find('\'').unwrap_or(0);
-            let end_bytes = ip.find(".tr,").unwrap_or(ip.len());
-            let mut result = (ip[start_bytes..end_bytes]).to_string();
-
-            if !ip.ends_with(".tr,") {
-                previous_line = result;
+            if !ip.contains("'.tr") {
                 continue;
             }
 
-            if !previous_line.is_empty() && previous_line.ends_with('\'') && ip.ends_with(".tr,") {
-                result = previous_line.clone();
-            }
+            let start_bytes = ip.find('\'').unwrap_or(0);
+            let end_bytes = ip.find("'.tr").unwrap_or(ip.len());
+            let mut result = (ip[start_bytes..end_bytes]).to_string();
 
             if result.trim().is_empty() {
                 continue;