From 37863013ab0b0b09a97f8cbffeab2a2f703f1b2c Mon Sep 17 00:00:00 2001
From: John Klug <john.klug@multitech.com>
Date: Thu, 14 Sep 2023 10:15:14 -0500
Subject: Use stream.is_open to test if file open works and use strerror to
 print errno string

---
 src/Device/Device.cpp | 44 +++++++++++++++++++++++++-------------------
 1 file changed, 25 insertions(+), 19 deletions(-)

diff --git a/src/Device/Device.cpp b/src/Device/Device.cpp
index 5f0e281..1a2aca5 100644
--- a/src/Device/Device.cpp
+++ b/src/Device/Device.cpp
@@ -500,11 +500,10 @@ void Device::show(std::string name) {
     if (code == 0) {
         printf("%s", fileData.c_str());
         exitHandler(0);
-    } else {
-        printError("cat: can't open %s%s: No such file or directory",
-                   SYSFS_PLATFORM, name.c_str());
-        exitHandler(99);
     }
+    printError("cat: can't open %s%s: %s",
+        SYSFS_PLATFORM, name.c_str(),strerror(errno));
+    exitHandler(99);
 }
 
 void Device::showTrigger(std::string name) {
@@ -514,11 +513,10 @@ void Device::showTrigger(std::string name) {
     if (code == 0) {
         printf("%s", fileData.c_str());
         exitHandler(0);
-    } else {
-        printError("Can't not open %s%s/trigger': No such file or directory",
-                   LEDS_GPIO_DIR, name.c_str());
-        exitHandler(99);
     }
+    printError("Can't open %s%s/trigger: %s",
+                   LEDS_GPIO_DIR, name.c_str(),strerror(errno));
+    exitHandler(99);
 }
 
 void Device::store(std::string name, std::string value) {
@@ -528,15 +526,19 @@ void Device::store(std::string name, std::string value) {
     }
     printDebug("Setting %s to %s", name.c_str(), value.c_str());
     std::ofstream fileToWrite(SYSFS_PLATFORM + name);
-    if (!fileToWrite.bad()) {
+    if (fileToWrite.is_open()) {
         fileToWrite << value;
+        if (fileToWrite.bad()) {
+            printError("Can't write %s%s: %s", SYSFS_PLATFORM,
+                   name.c_str(),strerror(errno));
+            exitHandler(98);
+        }
         fileToWrite.close();
         exitHandler(0);
-    } else {
-        printError("Can't open %s%s: No such file or directory", SYSFS_PLATFORM,
-                   name.c_str());
-        exitHandler(99);
     }
+    printError("Can't open %s%s: %s", SYSFS_PLATFORM,
+                   name.c_str(),strerror(errno));
+    exitHandler(99);
 }
 
 void Device::storeTrigger(std::string name, std::string value) {
@@ -546,15 +548,19 @@ void Device::storeTrigger(std::string name, std::string value) {
     }
     printDebug("Setting %s to %s", name.c_str(), value.c_str());
     std::ofstream fileToWrite(LEDS_GPIO_DIR + name + "/trigger");
-    if (!fileToWrite.bad()) {
+    if (fileToWrite.is_open()) {
         fileToWrite << value;
+        if(fileToWrite.bad()) {
+            printError("Can't write %s%s/trigger: %s",
+                   LEDS_GPIO_DIR, name.c_str(), strerror(errno));
+            exitHandler(98);
+        }
         fileToWrite.close();
         exitHandler(0);
-    } else {
-        printError("Can't not open %s%s/trigger': No such file or directory",
-                   LEDS_GPIO_DIR, name.c_str());
-        exitHandler(99);
     }
+    printError("Can't open %s%s/trigger: %s",
+                   LEDS_GPIO_DIR, name.c_str(), strerror(errno));
+    exitHandler(99);
 }
 
 void Device::writeJson() {
@@ -563,7 +569,7 @@ void Device::writeJson() {
     deviceInfo.Accept(writer);
     std::ofstream os(DEVICE_INFO_FILE);
     if (!os) {
-        printError("Can't write to %s", DEVICE_INFO_FILE);
+        printError("Can't write to %s: %s", DEVICE_INFO_FILE,strerror(errno));
         exitHandler(99);
     } else {
         os << buffer.GetString();
-- 
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