disable poppler warnings by default

user can enable poppler warnings by doing using the `--warnigs` flag

 Changes to be committed:
	modified:   root.go
	modified:   ../go-poppler/utils.go

2 files changed, 27 insertions, 3 deletions

diff --git a/cmd/root.go b/cmd/root.go
index 321253c..e93a4e7 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -7,14 +7,26 @@ import (
 	"os"
 
 	"github.com/scrotadamus/ghligh/cmd/tag"
+	"github.com/scrotadamus/ghligh/go-poppler"
 	"github.com/spf13/cobra"
 )
 
+var warnings bool
+
 var rootCmd = &cobra.Command{
 	Use:   "ghligh",
 	Short: "pdf highlights swiss knife",
 	Long:  `ghligh can be used to manipulate pdf files in various ways.`,
 
+	PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
+
+		if !warnings {
+			poppler.DisablePopplerWarnings()
+		}
+
+		return nil
+	},
+
 	Run: func(cmd *cobra.Command, args []string) {
 		cmd.Help()
 		return
@@ -33,4 +45,5 @@ func Execute() {
 func init() {
 	//rootCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
 	rootCmd.AddCommand(tag.TagCmd)
+	rootCmd.PersistentFlags().BoolVar(&warnings, "warnings", false, "show poppler warnings")
 }
diff --git a/go-poppler/utils.go b/go-poppler/utils.go
index 4bda53a..d5b6170 100644
--- a/go-poppler/utils.go
+++ b/go-poppler/utils.go
@@ -5,6 +5,13 @@ package poppler
 // #include <glib.h>
 // #include <unistd.h>
 // #include <stdlib.h>
+//
+//static void ignorePopplerWarnings(const gchar *log_domain, GLogLevelFlags log_level, const gchar *message, gpointer user_data) {
+//}
+//
+//static void disablePopplerWarnings() {
+//    g_log_set_handler("Poppler", G_LOG_LEVEL_WARNING, ignorePopplerWarnings, NULL);
+//}
 import "C"
 
 import "unsafe"
@@ -14,7 +21,7 @@ func toString(in *C.gchar) string {
 }
 
 func toBool(in C.gboolean) bool {
-	return  int(in) > 0
+	return int(in) > 0
 }
 
 /* convert a Quad struct to a GArray */
@@ -41,7 +48,7 @@ func quadsToGArray(quads []Quad) *C.GArray {
 			},
 		}
 
-		C.g_array_append_vals(garray, C.gconstpointer(&item),1)
+		C.g_array_append_vals(garray, C.gconstpointer(&item), 1)
 	}
 
 	return garray
@@ -66,7 +73,7 @@ func gArrayToQuads(q *C.GArray) []Quad {
 	return quads
 }
 
-func rectangleToPopplerRectangle (r Rectangle) C.PopplerRectangle {
+func rectangleToPopplerRectangle(r Rectangle) C.PopplerRectangle {
 	var pRect C.PopplerRectangle
 
 	pRect.x1 = C.double(r.X1)
@@ -83,3 +90,7 @@ func rectEq(r1 Rectangle, r2 Rectangle) bool {
 		r1.Y1 == r2.Y1 &&
 		r1.Y2 == r2.Y2
 }
+
+func DisablePopplerWarnings() {
+	C.disablePopplerWarnings()
+}