diff common.cpp @ 62:68aebc316898

* Some adjustments to process running (avoid timer): caller must now report errors
* Function to find user's real name
* Locate hg executable in path explicitly, use a setting to remember it

--- a/common.cpp	Wed Nov 17 11:48:58 2010 +0000
+++ b/common.cpp	Wed Nov 17 13:32:56 2010 +0000
@@ -15,9 +15,44 @@
     COPYING included with this distribution for more information.
 */
 
+#include "common.h"
+#include "debug.h"
 
-#include "common.h"
+#include <QFileInfo>
+#include <QProcessEnvironment>
+#include <QStringList>
 
+#include <sys/types.h>
+#include <pwd.h>
+
+QString findExecutable(QString name)
+{
+    if (name != "") {
+        if (name[0] != '/') {
+            name = QFileInfo(name).fileName();
+            QString path =
+                QProcessEnvironment::systemEnvironment().value("PATH");
+            DEBUG << "findExecutable: seeking location for binary " << name
+                  << ": system path is " << path;
+#ifdef Q_OS_WIN32
+            QChar pathSep = ';';
+#else
+            QChar pathSep = ':';
+#endif
+            QStringList elements = path.split(pathSep, QString::SkipEmptyParts);
+            foreach (QString element, elements) {
+                QString full = QString("%1/%2").arg(element).arg(name);
+                QFileInfo fi(full);
+                if (fi.exists() && fi.isFile() && fi.isExecutable()) {
+                    name = full;
+                    break;
+                }
+            }
+        }
+    }
+    return name;
+}
+    
 QString getSystem()
 {
     #ifdef Q_WS_X11
@@ -35,15 +70,6 @@
     return QString("");
 }
 
-QString getHgBinaryName()
-{
-    if (getSystem() == "Windows")
-        return QString("hg.exe");
-    else
-        return QString("hg");
-}
-
-
 QString getHgDirName()
 {
     if (getSystem() == "Windows")
@@ -56,8 +82,35 @@
     }
 }
 
+#ifdef Q_OS_WIN32
+QString getUserRealName()
+{
+    const int maxlen = 1023;
+    TCHAR buf[maxlen + 2];
+    LPTSTR info = buf;
 
+    if (!GetUserNameEx(NameDisplay, info, maxlen)) {
+        return "";
+    }
 
+    return QString::fromUcs2(info);
+}
+#elif Q_OS_MAC
+// Nothing here: definition is in common_osx.mm
+#else
+QString getUserRealName()
+{
+    const int maxlen = 1023;
+    char buf[maxlen + 2];
 
+    if (getlogin_r(buf, maxlen)) return "";
 
+    struct passwd *p = getpwnam(buf);
+    if (!p) return "";
+    
+    QString s(p->pw_gecos);
+    if (s != "") s = s.split(',')[0];
+    return s;
+}
+#endif