From 4231405336cab37f173acd8685f6a2dc5164ae6a Mon Sep 17 00:00:00 2001
From: Andreas Fankhauser hiddenalpha.ch
Date: Sat, 28 Mar 2026 21:28:12 +0100
Subject: Give `CsvIStream_Mentor.onCsvRow()` a `onDone` callback

---
 include/qntan/Qntan.h | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

(limited to 'include/qntan')

diff --git a/include/qntan/Qntan.h b/include/qntan/Qntan.h
index 9232817..d069558 100644
--- a/include/qntan/Qntan.h
+++ b/include/qntan/Qntan.h
@@ -1153,13 +1153,16 @@ struct Qntan_CsvIStream {
 struct Qntan_CsvIStream_Mentor {
 	/**/
 	void (*onCsvRow)( struct Qntan_CsvIStream_Mentor**,
-		char const**values, int*values_len, int numCols );
+		char const**values, int*values_len, int numCols,
+		void(*onDone)(int err, Qntan_Cls), Qntan_Cls );
 	/* Called for every CSV row.
 	 *
 	 * How an implementation could look like:
-	 *   void onCsvRow(char const*values, int*values_len, int numCols, Qntan_Cls a){
-	 *       for( int iCol = 0 ; iCol < numCols ; ++iCol )
+	 *   void onCsvRow( char const*values, int*values_len, int numCols, Qntan_Cls a, onDone, arg ){
+	 *       for( int iCol = 0 ; iCol < numCols ; ++iCol ){
 	 *           printf("col[%d]: '%.*s'\n", iCol, values_len[i], values[i]);
+	 *       }
+	 *       onDone(0, arg);
 	 *   }
 	 *
 	 * @param values
@@ -1169,6 +1172,9 @@ struct Qntan_CsvIStream_Mentor {
 	 * @param numCols
 	 *      Number of columns present in this row. Aka number of entries present
 	 *      in 'values' and 'values_len'.
+	 * @param onDone
+	 *      MUST be called as soon csv parser is allowed to continue.
+	 *      `err` MUST be `0`!
 	 */
 	void (*onCsvDocEnd)( struct Qntan_CsvIStream_Mentor**, int err, char const*emsg );
 	/* Called when there are no more rows. on success, `err` is `0`.
-- 
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