From 1bbce1aa65e4af84a144b137ea2037004eb2881d Mon Sep 17 00:00:00 2001
From: Victor Häggqvist <victor@snilius.com>
Date: Wed, 14 Sep 2022 23:54:17 +0200
Subject: go bump

---
 vendor/github.com/gocarina/gocsv/reflect.go | 95 ++++++++++++++++++++++++-----
 1 file changed, 81 insertions(+), 14 deletions(-)

(limited to 'vendor/github.com/gocarina/gocsv/reflect.go')

diff --git a/vendor/github.com/gocarina/gocsv/reflect.go b/vendor/github.com/gocarina/gocsv/reflect.go
index dfc63b3..309f80b 100644
--- a/vendor/github.com/gocarina/gocsv/reflect.go
+++ b/vendor/github.com/gocarina/gocsv/reflect.go
@@ -1,7 +1,9 @@
 package gocsv
 
 import (
+	"fmt"
 	"reflect"
+	"strconv"
 	"strings"
 	"sync"
 )
@@ -17,9 +19,10 @@ type structInfo struct {
 // Each IndexChain element before the last is the index of an the embedded struct field
 // that defines Key as a tag
 type fieldInfo struct {
-	keys       []string
-	omitEmpty  bool
-	IndexChain []int
+	keys         []string
+	omitEmpty    bool
+	IndexChain   []int
+	defaultValue string
 }
 
 func (f fieldInfo) getFirstKey() string {
@@ -64,18 +67,17 @@ func getFieldInfos(rType reflect.Type, parentIndexChain []int) []fieldInfo {
 		var cpy = make([]int, len(parentIndexChain))
 		copy(cpy, parentIndexChain)
 		indexChain := append(cpy, i)
-
 		// if the field is a pointer to a struct, follow the pointer then create fieldinfo for each field
 		if field.Type.Kind() == reflect.Ptr && field.Type.Elem().Kind() == reflect.Struct {
-			// unless it implements marshalText or marshalCSV. Structs that implement this
+			// Structs that implement any of the text or CSV marshaling methods
 			// should result in one value and not have their fields exposed
-			if !(canMarshal(field.Type.Elem())) {
+			if !(canMarshal(field.Type.Elem()) || canMarshal(field.Type)) {
 				fieldsList = append(fieldsList, getFieldInfos(field.Type.Elem(), indexChain)...)
 			}
 		}
 		// if the field is a struct, create a fieldInfo for each of its fields
 		if field.Type.Kind() == reflect.Struct {
-			// unless it implements marshalText or marshalCSV. Structs that implement this
+			// Structs that implement any of the text or CSV marshaling methods
 			// should result in one value and not have their fields exposed
 			if !(canMarshal(field.Type)) {
 				fieldsList = append(fieldsList, getFieldInfos(field.Type, indexChain)...)
@@ -87,26 +89,91 @@ func getFieldInfos(rType reflect.Type, parentIndexChain []int) []fieldInfo {
 			continue
 		}
 
-		fieldInfo := fieldInfo{IndexChain: indexChain}
+		currFieldInfo := fieldInfo{IndexChain: indexChain}
 		fieldTag := field.Tag.Get(TagName)
 		fieldTags := strings.Split(fieldTag, TagSeparator)
 		filteredTags := []string{}
 		for _, fieldTagEntry := range fieldTags {
-			if fieldTagEntry != "omitempty" {
-				filteredTags = append(filteredTags, normalizeName(fieldTagEntry))
+			trimmedFieldTagEntry := strings.TrimSpace(fieldTagEntry) // handles cases like `csv:"foo, omitempty, default=test"`
+			if trimmedFieldTagEntry == "omitempty" {
+				currFieldInfo.omitEmpty = true
+			} else if strings.HasPrefix(trimmedFieldTagEntry, "default=") {
+				currFieldInfo.defaultValue = strings.TrimPrefix(trimmedFieldTagEntry, "default=")
 			} else {
-				fieldInfo.omitEmpty = true
+				filteredTags = append(filteredTags, normalizeName(trimmedFieldTagEntry))
 			}
 		}
 
 		if len(filteredTags) == 1 && filteredTags[0] == "-" {
 			continue
 		} else if len(filteredTags) > 0 && filteredTags[0] != "" {
-			fieldInfo.keys = filteredTags
+			currFieldInfo.keys = filteredTags
+		} else {
+			currFieldInfo.keys = []string{normalizeName(field.Name)}
+		}
+
+		if field.Type.Kind() == reflect.Slice || field.Type.Kind() == reflect.Array {
+			var arrayLength = -1
+			if arrayTag, ok := field.Tag.Lookup(TagName + "[]"); ok {
+				arrayLength, _ = strconv.Atoi(arrayTag)
+			}
+
+			// When the field is a slice/array of structs, create a fieldInfo for each index and each field
+			if field.Type.Elem().Kind() == reflect.Struct {
+				fieldInfos := getFieldInfos(field.Type.Elem(), []int{})
+
+				for idx := 0; idx < arrayLength; idx++ {
+					// copy index chain and append array index
+					var cpy2 = make([]int, len(indexChain))
+					copy(cpy2, indexChain)
+					arrayIndexChain := append(cpy2, idx)
+					for _, childFieldInfo := range fieldInfos {
+						// copy array index chain and append array index
+						var cpy3 = make([]int, len(arrayIndexChain))
+						copy(cpy3, arrayIndexChain)
+
+						arrayFieldInfo := fieldInfo{
+							IndexChain:   append(cpy3, childFieldInfo.IndexChain...),
+							omitEmpty:    childFieldInfo.omitEmpty,
+							defaultValue: childFieldInfo.defaultValue,
+						}
+
+						// create cartesian product of keys
+						// eg: array field keys x struct field keys
+						for _, akey := range currFieldInfo.keys {
+							for _, fkey := range childFieldInfo.keys {
+								arrayFieldInfo.keys = append(arrayFieldInfo.keys, normalizeName(fmt.Sprintf("%s[%d].%s", akey, idx, fkey)))
+							}
+						}
+
+						fieldsList = append(fieldsList, arrayFieldInfo)
+					}
+				}
+			} else if arrayLength > 0 {
+				// When the field is a slice/array of primitives, create a fieldInfo for each index
+				for idx := 0; idx < arrayLength; idx++ {
+					// copy index chain and append array index
+					var cpy2 = make([]int, len(indexChain))
+					copy(cpy2, indexChain)
+
+					arrayFieldInfo := fieldInfo{
+						IndexChain:   append(cpy2, idx),
+						omitEmpty:    currFieldInfo.omitEmpty,
+						defaultValue: currFieldInfo.defaultValue,
+					}
+
+					for _, akey := range currFieldInfo.keys {
+						arrayFieldInfo.keys = append(arrayFieldInfo.keys, normalizeName(fmt.Sprintf("%s[%d]", akey, idx)))
+					}
+
+					fieldsList = append(fieldsList, arrayFieldInfo)
+				}
+			} else {
+				fieldsList = append(fieldsList, currFieldInfo)
+			}
 		} else {
-			fieldInfo.keys = []string{normalizeName(field.Name)}
+			fieldsList = append(fieldsList, currFieldInfo)
 		}
-		fieldsList = append(fieldsList, fieldInfo)
 	}
 	return fieldsList
 }
-- 
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