From 69ac99da02988ad2ed675570ccaa5ff7777f0279 Mon Sep 17 00:00:00 2001
From: Nick White <git@njw.name>
Date: Mon, 21 Feb 2022 12:33:48 +0000
Subject: Ensure that no new console windows are opened on Windows when
 executing Tesseract

---
 cmd/rescribe/main.go              |  4 +++-
 internal/pipeline/pipeline.go     |  1 +
 internal/pipeline/util.go         | 16 ++++++++++++++++
 internal/pipeline/util_windows.go | 16 ++++++++++++++++
 4 files changed, 36 insertions(+), 1 deletion(-)
 create mode 100644 internal/pipeline/util.go
 create mode 100644 internal/pipeline/util_windows.go

diff --git a/cmd/rescribe/main.go b/cmd/rescribe/main.go
index 41dc83c..7db5e3e 100644
--- a/cmd/rescribe/main.go
+++ b/cmd/rescribe/main.go
@@ -428,7 +428,9 @@ func rmIfNotImage(f string) error {
 }
 
 func startProcess(ctx context.Context, logger log.Logger, tessCommand string, bookdir string, bookname string, trainingName string, savedir string, tessdir string) error {
-	_, err := exec.Command(tessCommand, "--help").Output()
+	cmd := exec.Command(tessCommand, "--help")
+	pipeline.HideCmd(cmd)
+	_, err := cmd.Output()
 	if err != nil {
 		errmsg := "Error, Can't run Tesseract\n"
 		errmsg += "Ensure that Tesseract is installed and available, or don't use the -systess flag.\n"
diff --git a/internal/pipeline/pipeline.go b/internal/pipeline/pipeline.go
index b4a9d92..639bba1 100644
--- a/internal/pipeline/pipeline.go
+++ b/internal/pipeline/pipeline.go
@@ -310,6 +310,7 @@ func Ocr(training string, tesscmd string) func(context.Context, chan string, cha
 			logger.Println("OCRing", path)
 			name := strings.Replace(path, ".png", "", 1)
 			cmd := exec.Command(tesscmd, "-l", training, path, name, "-c", "tessedit_create_hocr=1", "-c", "hocr_font_info=0")
+			HideCmd(cmd)
 			var stdout, stderr bytes.Buffer
 			cmd.Stdout = &stdout
 			cmd.Stderr = &stderr
diff --git a/internal/pipeline/util.go b/internal/pipeline/util.go
new file mode 100644
index 0000000..092a9ee
--- /dev/null
+++ b/internal/pipeline/util.go
@@ -0,0 +1,16 @@
+// Copyright 2022 Nick White.
+// Use of this source code is governed by the GPLv3
+// license that can be found in the LICENSE file.
+
+// +build !windows
+
+package pipeline
+
+import (
+	"os/exec"
+)
+
+// HideCmd adds a flag to hide any console window from being
+// displayed, if necessary for the platform
+func HideCmd(cmd *exec.Cmd) {
+}
diff --git a/internal/pipeline/util_windows.go b/internal/pipeline/util_windows.go
new file mode 100644
index 0000000..08c321e
--- /dev/null
+++ b/internal/pipeline/util_windows.go
@@ -0,0 +1,16 @@
+// Copyright 2022 Nick White.
+// Use of this source code is governed by the GPLv3
+// license that can be found in the LICENSE file.
+
+package pipeline
+
+import (
+	"os/exec"
+	"syscall"
+)
+
+// HideCmd adds a flag to hide any console window from being
+// displayed, if necessary for the platform
+func HideCmd(cmd *exec.Cmd) {
+	cmd.SysProcAttr = &syscall.SysProcAttr{HideWindow: true}
+}
-- 
cgit v1.2.1-24-ge1ad