Handle rows with empty cells as non-empty lines (#25)

vslinko · Sep 21, 2023 · 410f9e0 · 410f9e0
1 parent d6166be
commit 410f9e0
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diff --git a/reader.ts b/reader.ts
@@ -359,6 +359,7 @@ export class CSVReader {
 
       if (!this.inColumn && this.hasNext(this.columnSeparator)) {
         this.debug("columnSeparator");
+        this.emptyLine = false;
         this.processColumn();
         this.skip(this.columnSeparator.length);
         continue;

diff --git a/reader_test.ts b/reader_test.ts
@@ -421,3 +421,22 @@ a,b,c
     assertEquals(rows, [["1", "2", "3"]]);
   },
 });
+
+Deno.test({
+  name: "readCSVRows can read empty lines (not prepends to the next line)",
+  async fn() {
+    const reader = new MyReader(
+      `col1,col2,col3
+a,b,c
+,,
+d,e,f`,
+    );
+    const rows = await asyncArrayFrom(readCSVRows(reader));
+    assertEquals(rows, [
+      ["col1", "col2", "col3"],
+      ["a", "b", "c"],
+      ["", "", ""],
+      ["d", "e", "f"],
+    ]);
+  },
+});