[tools] testbot/TestLauncher: Show the tool name in error messages.

[Francois Gouget]

Format the error messages so that they are easily recognized as such.

Signed-off-by: Francois Gouget 
---
 testbot/src/TestLauncher/TestLauncher.c | 58 +++++++++++++++++++------
 1 file changed, 44 insertions(+), 14 deletions(-)

diff --git a/testbot/src/TestLauncher/TestLauncher.c b/testbot/src/TestLauncher/TestLauncher.c
index b92d09bf2..dd34a7626 100644
--- a/testbot/src/TestLauncher/TestLauncher.c
+++ b/testbot/src/TestLauncher/TestLauncher.c
@@ -27,6 +27,28 @@
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))

+/*
+ * Error handling
+ */
+
+#ifdef __GNUC__
+# define FORMAT(fmt, arg1)    __attribute__((format (printf, fmt, arg1) ))
+#else
+# define FORMAT(fmt, arg1)
+#endif
+void Error(const char* Format, ...) FORMAT(1,2);
+
+static const char *Name0;
+void Error(const char* Format, ...)
+{
+    va_list valist;
+    fprintf(stderr, "%s:error: ", Name0);
+    va_start(valist, Format);
+    vfprintf(stderr, Format, valist);
+    va_end(valist);
+}
+
+
 /*
  * Missing dll and entry point detection.
  */
@@ -116,12 +138,20 @@ int main(int argc, char *argv[])
    const char *Suffix;
    char TestName[MAX_PATH];
    int TestArg;
-   char *CommandLine;
+   char *CommandLine, *p;
    int CommandLen;
    STARTUPINFOA StartupInfo;
    PROCESS_INFORMATION ProcessInformation;
    DWORD ExitCode;

+   Name0 = p = argv[0];
+   while (*p != '\0')
+   {
+      if (*p == '/' || *p == '\')
+         Name0 = p + 1;
+      p++;
+   }
+
    TimeOut = INFINITE;
    CommandLine = NULL;
    Arg = 1;
@@ -138,8 +168,8 @@ int main(int argc, char *argv[])
             TimeOut = (DWORD) strtoul(argv[Arg + 1], &EndPtr, 10) * 1000;
             if (*EndPtr != '\0')
             {
-               fprintf(stderr, "Invalid TimeOut value %s\n", argv[Arg + 1]);
-               exit(1);
+               Error("Invalid TimeOut value %s\n", argv[Arg + 1]);
+               return 1;
             }
          }
          else
@@ -150,9 +180,9 @@ int main(int argc, char *argv[])
       {
          if (GetFullPathNameA(argv[Arg], ARRAY_SIZE(TestExeFullName), TestExeFullName, &TestExeFileName) == 0)
          {
-            fprintf(stderr, "Can't determine full path of test executable %s, error %lu\n",
+            Error("Cauld not get the test executable full path %s (error %lu)\n",
                     argv[Arg], GetLastError());
-            exit(1);
+            return 1;
          }
          Suffix = strstr(TestExeFileName, "_test.exe");
          if (Suffix == NULL)
@@ -175,8 +205,8 @@ int main(int argc, char *argv[])
          CommandLine = (char *) malloc(CommandLen);
          if (CommandLine == NULL)
          {
-            fprintf(stderr, "Unable to allocate memory for child command line\n");
-            exit(1);
+            Error("Unable to allocate memory for child command line\n");
+            return 1;
          }

CommandLine[0] = '"';
@@ -197,7 +227,7 @@ int main(int argc, char *argv[])
    if (UsageError)
    {
       fprintf(stderr, "Usage: %s [-t TimeOut] TestExecutable.exe [TestParameter...]\n", argv[0]);
-      exit(1);
+      return 1;
    }

Start = GetTickCount();
@@ -218,8 +248,8 @@ int main(int argc, char *argv[])
     */
    if (! CreateProcessA(NULL, CommandLine, NULL, NULL, TRUE, CREATE_DEFAULT_ERROR_MODE, NULL, NULL, &StartupInfo, &ProcessInformation))
    {
-      fprintf(stderr, "CreateProcess failed with error %lu\n", GetLastError());
-      exit(1);
+      Error("CreateProcess failed (error %lu)\n", GetLastError());
+      return 1;
    }
    CloseHandle(ProcessInformation.hThread);

@@ -253,7 +283,7 @@ int main(int argc, char *argv[])
       switch (ExitCode)
       {
       case WAIT_FAILED:
-         fprintf(stderr, "Wait for child failed, error %lu\n", GetLastError());
+         Error("Wait for child failed (error %lu)\n", GetLastError());
          break;

case WAIT_TIMEOUT:
@@ -261,15 +291,15 @@ int main(int argc, char *argv[])
          break;

default:
-         fprintf(stderr, "Unexpected return value %lu from wait for child\n", ExitCode);
+         Error("Unexpected return value %lu from wait for child\n", ExitCode);
          break;
       }
       if (!TerminateProcess(ProcessInformation.hProcess, 257))
-         fprintf(stderr, "TerminateProcess failed, error %lu\n", GetLastError());
+         Error("TerminateProcess failed (error %lu)\n", GetLastError());
    }
    else if (!Skips && !GetExitCodeProcess(ProcessInformation.hProcess, &ExitCode))
    {
-      fprintf(stderr, "Can't get child exit code, error %lu\n", GetLastError());
+      Error("Could not get the child exit code (error %lu)\n", GetLastError());
       ExitCode = 259;
    }
    CloseHandle(ProcessInformation.hProcess);