CLI: add option --split for CSV input

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 All notable changes to this project will be documented in this file.
 
+# 0.6.8 - 2024-12-13
+
+- CLI: add option --split for CSV input
+
 # 0.6.7 - 2024-06-06
 
 - Extend HTML display

bin/avram.js

@@ -22,7 +22,8 @@ cli.usage("avram [options] [validation options] <schema> [<files...>]")
   .option("-p, --print             print all input records (in JSON)")
   .option("-v, --verbose           verbose error messages")
   .option("-l, --list              list supported validation options")
-  .option("--nullSequence [string] ignore fields with this value in CSV")
+  .option("--nullSequence [string] ignore fields with this value (CSV only)")
+  .option("--split [string]        split values into lists (CSV only)")
   .details(details)
   .action(async (args, opt) => {
     if (opt.list) {

lib/formats.js

@@ -39,9 +39,14 @@ const plugins = {
   },
   "csv-parser": module => {
     formats.csv = {
-      stream(input, options) {
+      stream(input, options) {        
+        const splitValues = options.split === undefined ? record => record :
+          (record, delimiter) => record.map(field => 
+            field.value.split(delimiter).map(value => ({ tag: field.tag, value })), 
+          ).flat()
         return input.pipe(module.default())
           .pipe(recordTransform(Record.fromObject,options))
+          .pipe(recordTransform(splitValues,options.split))
       },
       pattern: /\.csv$/,
       family: "flat",