Replace INI writing function with encoder

ini.go

@@ -2,7 +2,9 @@ package ini
 
 import (
 	"bufio"
+	"fmt"
 	"io"
+	"reflect"
 	"strings"
 )
 
@@ -13,6 +15,32 @@ type Entry struct {
 	Value   string
 }
 
+// Attempts to write `value` to `writer` in an INI-encoded format, returning any error that
+// occured during writing.
+func Encode(writer io.Writer, section string, value any) error {
+	if _, printError := fmt.Fprintf(writer, "[%s]\n", section); printError != nil {
+		return printError
+	}
+
+	var valueType = reflect.TypeOf(value)
+
+	if valueType.Kind() != reflect.Struct {
+		return fmt.Errorf("only structs may be encoded")
+	}
+
+	var valueInfo = reflect.ValueOf(value)
+
+	for i := 0; i < valueInfo.NumField(); i += 1 {
+		if _, printError := fmt.Fprintf(writer, "%s = %s\n",
+			valueType.Field(i).Name, valueInfo.Field(i).Interface()); printError != nil {
+
+			return printError
+		}
+	}
+
+	return nil
+}
+
 // Returns the last error that occured during parsing.
 func (parser *Parser) Err() error {
 	return parser.err
@@ -95,48 +123,6 @@ type Parser struct {
 	isEnd   bool
 }
 
-// Attempts to write `entries` to `writer`, returning any error that occured during writing.
-func Write(writer io.StringWriter, entries []Entry) error {
-	// TODO: Not happy with this solution to writing files, needs more revision.
-	var section = ""
-
-	for _, entry := range entries {
-		if entry.Section != section {
-			if _, writeError := writer.WriteString("\n["); writeError != nil {
-				return writeError
-			}
-
-			if _, writeError := writer.WriteString(entry.Section); writeError != nil {
-				return writeError
-			}
-
-			if _, writeError := writer.WriteString("]\n"); writeError != nil {
-				return writeError
-			}
-
-			section = entry.Section
-		}
-
-		if _, writeError := writer.WriteString(entry.Key); writeError != nil {
-			return writeError
-		}
-
-		if _, writeError := writer.WriteString(" = "); writeError != nil {
-			return writeError
-		}
-
-		if _, writeError := writer.WriteString(entry.Value); writeError != nil {
-			return writeError
-		}
-
-		if _, writeError := writer.WriteString("\n"); writeError != nil {
-			return writeError
-		}
-	}
-
-	return nil
-}
-
 // Returns a string with the the outer-most quotes surrounding `s` trimmed, should they exist.
 func unquote(s string) string {
 	var sLen = len(s)