c2a4061997-02-06Fredrik Hübinette (Hubbe) #define error(X) throw( ({ (X), backtrace()[0..sizeof(backtrace())-2] }) )
d5190b1997-02-10Fredrik Hübinette (Hubbe) import Stdio;
c2a4061997-02-06Fredrik Hübinette (Hubbe)  static private inherit File : file; varargs int exec(string file,string ... foo) { string path; if(search(file,"/")) return exece(combine_path(getcwd(),file),foo,getenv());
bf67441997-02-27Marcus Comstedt  path=getenv("PATH");
c2a4061997-02-06Fredrik Hübinette (Hubbe) 
bf67441997-02-27Marcus Comstedt  foreach((path?(path/":"):({})),path)
c2a4061997-02-06Fredrik Hübinette (Hubbe)  if(file_stat(path=combine_path(path,file))) return exece(path, foo,getenv()); return 69; } varargs int spawn(string s,object stdin,object stdout,object stderr) { int pid; pid=fork(); if(pid==-1) error("No more processes.\n"); if(pid) { return pid; }else{
ef293f1997-05-07Henrik Grubbström (Grubba)  if(stdin) {
c2a4061997-02-06Fredrik Hübinette (Hubbe)  stdin->dup2(File("stdin"));
ef293f1997-05-07Henrik Grubbström (Grubba)  stdin->close(); }
c2a4061997-02-06Fredrik Hübinette (Hubbe) 
ef293f1997-05-07Henrik Grubbström (Grubba)  if(stdout) {
c2a4061997-02-06Fredrik Hübinette (Hubbe)  stdout->dup2(File("stdout"));
ef293f1997-05-07Henrik Grubbström (Grubba)  stdout->close(); }
c2a4061997-02-06Fredrik Hübinette (Hubbe) 
ef293f1997-05-07Henrik Grubbström (Grubba)  if(stderr) {
6e61041997-04-09Niels Möller  stderr->dup2(File("stderr"));
ef293f1997-05-07Henrik Grubbström (Grubba)  stderr->close(); } ::close();
c2a4061997-02-06Fredrik Hübinette (Hubbe)  exec("/bin/sh","-c",s); exit(69); } } string popen(string s) { object p; string t; p=file::pipe(); if(!p) error("Popen failed. (couldn't create pipe)\n"); spawn(s,0,p,0);
ef293f1997-05-07Henrik Grubbström (Grubba)  p->close();
c2a4061997-02-06Fredrik Hübinette (Hubbe)  destruct(p); t=read(0x7fffffff); if(!t) { int e; e=errno(); close(); error("Popen failed with error "+e+".\n"); }else{ close(); } return t; } void system(string s) { object p; int pid; string t; p=file::pipe(); if(!p) error("System() failed.\n"); p->set_close_on_exec(0); if(pid=fork()) { destruct(p); /* Nothing will ever be written here, we are just waiting for it * to close */ file::read(1); }else{ exec("/bin/sh","-c",s); exit(69); } }
cb119a1997-04-07Fredrik Hübinette (Hubbe)  constant fork = predef::fork; constant exece = predef::exece;