Nasal-Interpreter/test/watchdog.nas

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var os_time=func(){
return "[\e[33;1m"~os.time()~"\e[0m] ";
}
var err_hd=func(){
return "[\e[91;1merror\e[0m] ";
}
var watching_hd=func(){
return "[\e[96;1mwatching\e[0m] ";
}
var modified_hd=func(){
return "[\e[92;1mmodified\e[0m] ";
}
var usage=func(){
println(os_time(),"[\e[92;1musage\e[0m] \e[1mnasal watchdog.nas <filename>\e[0m");
}
var argv=runtime.argv();
if(size(argv)!=1){
println(os_time(),err_hd(),"\e[1mneed correct file path to watch\e[0m");
usage();
exit(-1);
}
var filename=argv[0];
if(!io.exists(filename)){
println(os_time(),err_hd(),"\e[1mfile <",filename,"> does not exist\e[0m");
usage();
exit(-1);
}
var modified_time=fstat(filename).st_mtime;
println(os_time(),watching_hd(),"\e[1m",filename," ..\e[0m");
while(1){
unix.sleep(1);
if(!io.exists(filename)){
println(os_time(),err_hd(),"\e[1mfile <",filename,"> does not exist\e[0m");
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(),"\e[1m",filename,"\e[0m");
var ret=system((os.platform()=="windows"?"":"./")~"nasal "~filename);
if(ret!=0){
println(os_time(),err_hd(),"\e[1mprocess returned value ",ret,"\e[0m");
}
}
}