First commit. Complete closeMonitor, with '-t' and '-s' flags. Add gitignore file.

Author: axuanhello

.gitignore

@@ -0,0 +1,52 @@
+# Prerequisites
+*.d
+
+# Object files
+*.o
+*.ko
+*.obj
+*.elf
+
+# Linker output
+*.ilk
+*.map
+*.exp
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Libraries
+*.lib
+*.a
+*.la
+*.lo
+
+# Shared objects (inc. Windows DLLs)
+*.dll
+*.so
+*.so.*
+*.dylib
+
+# Executables
+*.exe
+*.out
+*.app
+*.i*86
+*.x86_64
+*.hex
+
+# Debug files
+*.dSYM/
+*.su
+*.idb
+*.pdb
+
+# Kernel Module Compile Results
+*.mod*
+*.cmd
+.tmp_versions/
+modules.order
+Module.symvers
+Mkfile.old
+dkms.conf

src/closeMonitor.c

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+/*
+* Only on Windows platform
+*/
+#include <Windows.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <powrprof.h>
+#pragma comment(lib,"libpowrprof.lib") 
+int main(int argc, char** argv) {
+    int second = 1;
+    int sleep = 0;
+    char* pluralSuffix = "";
+    
+    for (int i = 1; i < argc; ++i) {
+        //-t flag, input the execution delay time.
+        if (!strcmp(argv[i], "-t")) {
+            if (++i < argc) {
+
+                // we can also use atoi() function, but it may not capture some errors.
+
+                second = 0;
+                int j = 0;
+                for (; argv[i][j] && argv[i][j] >= '0' && argv[i][j] <= '9'; ++j) {
+                    second = second * 10 + argv[i][j] - '0';
+                    if (second < 0) {
+                        errno = 22;
+                        perror("'-t' parameter overflow!");
+                        exit(-1);
+                    }
+                }
+                if (argv[i][j]) {
+                    errno = 22;
+                    perror("'-t' parameter should be a nonnegative integer.\n");
+                    exit(-1);
+                }
+            }
+        }
+        //-s flag, to determine whether the computer should sleep or not.
+        else if (!strcmp(argv[i], "-s")) {
+            sleep = 1;
+        }
+    }
+
+    if (second > 1) {
+        pluralSuffix = "s";
+    }
+
+    if (sleep) {
+        printf("Computer will sleep in %d second%s.\n", second, pluralSuffix);
+        Sleep(second * 1000);
+        SetSuspendState(FALSE, FALSE, FALSE);
+    }
+    else {
+        printf("Monitor will be closed in %d second%s.\n", second,pluralSuffix);
+        Sleep(second * 1000);
+        PostMessage(HWND_BROADCAST, WM_SYSCOMMAND, SC_MONITORPOWER, 2);
+    }
+    
+    return 0;
+}