From 05d1f60c14c6b0a6fbb84bb025036757c671feb0 Mon Sep 17 00:00:00 2001
From: Michael Stapelberg <stapelberg@google.com>
Date: Sun, 17 Jul 2022 09:16:53 +0200
Subject: [PATCH] make format=txt display the textual QR code contents

This allows for easy comparison with QR codes extracted from PDFs:

pdfimages -png invoice.pdf invoice && \
  zbarimg --raw invoice*.png > code.txt
---
 cmd/qrbill-api/api.go          | 3 +--
 cmd/qrbill-api/api_gokrazy.go  | 1 +
 qrbill.go                      | 4 ++++
 third_party/goembed/goembed.go | 1 +
 4 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/cmd/qrbill-api/api.go b/cmd/qrbill-api/api.go
index d31a183..44a28ca 100644
--- a/cmd/qrbill-api/api.go
+++ b/cmd/qrbill-api/api.go
@@ -27,7 +27,6 @@ import (
 	"os"
 	"strings"
 
-	"github.com/davecgh/go-spew/spew"
 	"github.com/mattn/go-isatty"
 	"github.com/stapelberg/qrbill"
 
@@ -184,7 +183,7 @@ func logic() error {
 
 		case "txt":
 			w.Header().Add("Content-Type", "text/plain; charset=utf-8")
-			spew.Fdump(w, qrch.Validate())
+			fmt.Fprintf(w, "%s", bill.EncodeToString())
 
 		case "html":
 			debugHTML(w, r, prefix, qrch)
diff --git a/cmd/qrbill-api/api_gokrazy.go b/cmd/qrbill-api/api_gokrazy.go
index 710338a..ec3ad33 100644
--- a/cmd/qrbill-api/api_gokrazy.go
+++ b/cmd/qrbill-api/api_gokrazy.go
@@ -1,3 +1,4 @@
+//go:build gokrazy
 // +build gokrazy
 
 // Copyright 2020 Google LLC
diff --git a/qrbill.go b/qrbill.go
index bd73fd5..e393a19 100644
--- a/qrbill.go
+++ b/qrbill.go
@@ -263,6 +263,10 @@ type Bill struct {
 	qrcontents string
 }
 
+func (b *Bill) EncodeToString() string {
+	return b.qrcontents
+}
+
 func (b *Bill) EncodeToSVG() ([]byte, error) {
 	var err error
 	code, err := encoder.Encoder_encode(b.qrcontents, decoder.ErrorCorrectionLevel_M, qrEncodeHints())
diff --git a/third_party/goembed/goembed.go b/third_party/goembed/goembed.go
index d6705f2..8e29713 100644
--- a/third_party/goembed/goembed.go
+++ b/third_party/goembed/goembed.go
@@ -1,5 +1,6 @@
 // copied from https://github.com/dsymonds/goembed/ with pull requests applied
 
+//go:build ignore
 // +build ignore
 
 // goembed - Embed data in Go source code