🚀 add lib function exit() and add test file watchdog.nas to run the nasal file when it is changed.

2022-08-27 18:12:32 +08:00
parent 0e578b3e21
commit 8293f85c5b
6 changed files with 70 additions and 6 deletions
@@ -0,0 +1,47 @@
+var os_time=func(){
+    return "[\e[33m"~os.time()~"\e[0m] ";
+}
+var err_hd=func(){
+    return "[\e[91merror\e[0m] ";
+}
+var watching_hd=func(){
+    return "[\e[96mwatching\e[0m] ";
+}
+var modified_hd=func(){
+    return "[\e[92mmodified\e[0m] ";
+}
+var usage=func(){
+    println(os_time(),"[\e[92musage\e[0m] nasal watchdog.nas <filename>");
+}
+
+var argv=runtime.argv();
+if(size(argv)!=1){
+    println(os_time(),err_hd(),"need correct file path to watch");
+    usage();
+    exit(-1);
+}
+var filename=argv[0];
+if(!io.exists(filename)){
+    println(os_time(),err_hd(),"file <",filename,"> does not exist");
+    usage();
+    exit(-1);
+}
+
+var modified_time=fstat(filename).st_mtime;
+println(os_time(),watching_hd(),filename," ..");
+while(1){
+    unix.sleep(1);
+    if(!io.exists(filename)){
+        println(os_time(),err_hd(),"file <",filename,"> does not exist");
+        break;
+    }
+    var latest_modified_time=fstat(filename).st_mtime;
+    if(latest_modified_time!=modified_time){
+        modified_time=latest_modified_time;
+        println(os_time(),modified_hd(),filename);
+        var ret=system((os.platform()=="windows"?"":"./")~"nasal "~filename);
+        if(ret!=0){
+            println(os_time(),err_hd(),"process returned value ",ret);
+        }
+    }
+}