Replace which invocations with actual path resolution code

mainwindow.cpp

@@ -1,5 +1,6 @@
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
+#include "util.h"
 #include <QClipboard>
 #include <QTimer>
 
@@ -50,38 +51,17 @@ void MainWindow::checkConfig() {
 
     passExecutable = settings.value("passExecutable").toString();
     if (passExecutable == "") {
-        process->start("which pass");
-        process->waitForFinished();
-        if (process->exitCode() == 0) {
-            passExecutable = process->readAllStandardOutput().trimmed();
-            settings.setValue("passExecutable", passExecutable);
-            usePass = true;
-            settings.setValue("usePass", "true");
-        }
+        passExecutable = Util::findBinaryInPath("pass");
     }
 
     gitExecutable = settings.value("gitExecutable").toString();
     if (gitExecutable == "") {
-        process->start("which git");
-        process->waitForFinished();
-        if (process->exitCode() == 0) {
-            gitExecutable = process->readAllStandardOutput().trimmed();
-            settings.setValue("gitExecutable", gitExecutable);
-        }
+        gitExecutable = Util::findBinaryInPath("git");
     }
 
     gpgExecutable = settings.value("gpgExecutable").toString();
     if (gpgExecutable == "") {
-        process->start("which gpg2");
-        process->waitForFinished();
-        if (process->exitCode() != 0) {
-            process->start("which gpg");
-            process->waitForFinished();
-        }
-        if (process->exitCode() == 0) {
-            gpgExecutable = process->readAllStandardOutput().trimmed();
-            settings.setValue("gpgExecutable", gpgExecutable);
-        }
+        gpgExecutable = Util::findBinaryInPath("gpg");
     }
 
     if (passExecutable == "" && (gitExecutable == "" || gpgExecutable == "")) {

qtpass.pro

@@ -20,12 +20,14 @@ SOURCES   += main.cpp\
              mainwindow.cpp \
              dialog.cpp \
              storemodel.cpp \
-             singleapplication.cpp
+             singleapplication.cpp \
+    util.cpp
 
 HEADERS   += mainwindow.h \
              dialog.h \
              storemodel.h \
-             singleapplication.h
+             singleapplication.h \
+    util.h
 
 FORMS     += mainwindow.ui \
              dialog.ui

util.cpp

@@ -0,0 +1,53 @@
+#include <QDebug>
+#include <QFileInfo>
+#include <QProcessEnvironment>
+#include <QString>
+#include "util.h"
+
+QProcessEnvironment Util::_env;
+bool Util::_envInitialised;
+
+void Util::initialiseEnvironment()
+{
+    if (!_envInitialised) {
+        _env = QProcessEnvironment::systemEnvironment();
+        _envInitialised = true;
+    }
+}
+
+QString Util::findBinaryInPath(QString binary)
+{
+    initialiseEnvironment();
+
+    QString ret = "";
+
+    binary.prepend("/");
+
+    if (_env.contains("PATH")) {
+        QString path = _env.value("PATH");
+
+        QStringList entries = path.split(':');
+        if (entries.length() < 2) {
+            entries = path.split(';');
+        }
+
+        foreach(QString entry, entries) {
+            QFileInfo *qfi = new QFileInfo(entry.append(binary));
+            qDebug() << entry;
+
+#ifdef WINDOWS
+            if (!qfi->exists()) {
+                QFileInfo qfi = new QFileInfo(entry.append(".exe"));
+            }
+#endif
+            if (!qfi->isExecutable()) {
+                continue;
+            }
+
+            ret = qfi->absoluteFilePath();
+            break;
+        }
+    }
+
+    return ret;
+}

util.h

@@ -0,0 +1,17 @@
+#ifndef UTIL_H
+#define UTIL_H
+
+#include <QString>
+#include <QProcessEnvironment>
+
+class Util
+{
+public:
+    static QString findBinaryInPath(QString binary);
+private:
+    static void initialiseEnvironment();
+    static QProcessEnvironment _env;
+    static bool _envInitialised;
+};
+
+#endif // UTIL_H