/*
 * This program generates the signames.h and signames.c files.
 *
 * Copyright (C) 1989 by Kenneth Almquist.  All rights reserved.
 * This file is part of ash, which is distributed under the terms specified
 * by the Ash General Public License.  See the file named LICENSE.
 */
#include <stdio.h>
#include <signal.h>



struct sig {
      int signo;		/* signal number */
      char *name;		/* signal name (without leading "SIG") */
      char *mesg;		/* description */
};


struct sig sigtab[] = {
      SIGHUP, "HUP", "Hangup",
      SIGINT, "INT", "Interrupt",	/* normally don't print message */
      SIGQUIT, "QUIT", "Quit",
      SIGILL, "ILL", "Illegal instruction",
      SIGTRAP, "TRAP", "Trace/BPT trap",
#ifdef SIGABRT
      SIGABRT, "ABRT", "abort",
#endif
#if defined(SIGIOT) && (! defined(SIGABRT) || SIGABRT != SIGIOT)
      SIGIOT, "IOT", "abort",
#endif
#ifdef SIGEMT
      SIGEMT, "EMT", "EMT trap",
#endif
      SIGFPE, "FPE", "Floating exception",
      SIGKILL, "KILL", "Killed",
      SIGBUS, "BUS", "Bus error",
      SIGSEGV, "SEGV", "Memory fault",
      SIGSYS, "SYS", "Bad system call",
      SIGPIPE, "PIPE", "Broken pipe",	/* normally don't print message */
      SIGALRM, "ALRM", "Alarm call",
      SIGTERM, "TERM", "Terminated",
#ifdef SIGUSR1
      SIGUSR1, "USR1", "User signal 1",
#endif
#ifdef SIGUSR2
      SIGUSR2, "USR2", "User signal 2",
#endif
#ifdef SIGCLD
      SIGCLD, "CLD", NULL,
#endif
#if defined(SIGCHLD) && ! defined(SIGCLD)
      SIGCHLD, "CLD", NULL,
#endif
#ifdef SIGPWR
      SIGPWR, "PWR", "Power fail",
#endif
#ifdef SIGPOLL
      SIGPOLL, "POLL", "Poll",
#endif
      /* Now for the BSD signals */
#ifdef SIGURG
      SIGURG, "URG", NULL,
#endif
#ifdef SIGSTOP
      SIGSTOP, "STOP", "Stopped",
#endif
#ifdef SIGTSTP
      SIGTSTP, "TSTP", "Stopped",
#endif
#ifdef SIGCONT
      SIGCONT, "CONT", NULL,
#endif
#ifdef SIGTTIN
      SIGTTIN, "TTIN", "Stopped (input)",
#endif
#ifdef SIGTTOU
      SIGTTOU, "TTOU", "Stopped (output)",
#endif
#ifdef SIGIO
      SIGIO, "IO", NULL,
#endif
#ifdef SIGXCPU
      SIGXCPU, "XCPU", "Time limit exceeded",
#endif
#ifdef SIGXFSZ
      SIGXFSZ, "XFSZ", NULL,
#endif
#ifdef SIGVTALARM
      SIGVTALARM, "VTALARM", "Virtual alarm",
#endif
#ifdef SIGPROF
      SIGPROF, "PROF", "Profiling alarm",
#endif
#ifdef SIGWINCH
      SIGWINCH, "WINCH", NULL,
#endif
      0, NULL, NULL
};


#define MAXSIG 64


char *sigmesg[MAXSIG + 1];


char writer[] = "\
/*\n\
 * This file was generated by the mksignames program.\n\
 */\n\
\n";



main(argc, argv)  char **argv; {
      FILE *cfile, *hfile;	
      struct sig *sigp;
      int maxsig;
      int i;

      if ((cfile = fopen("signames.c", "w")) == NULL) {
	    fputs("Can't create signames.c\n", stderr);
	    exit(2);
      }
      if ((hfile = fopen("signames.h", "w")) == NULL) {
	    fputs("Can't create signames.h\n", stderr);
	    exit(2);
      }
      maxsig = 0;
      for (sigp = sigtab ; sigp->signo != 0 ; sigp++) {
	    if (sigp->signo < 0 || sigp->signo > MAXSIG)
		  continue;
	    sigmesg[sigp->signo] = sigp->mesg;
	    if (maxsig < sigp->signo)
		  maxsig = sigp->signo;
      }

      fputs(writer, hfile);
      fprintf(hfile, "#define MAXSIG %d\n\n", maxsig);
      fprintf(hfile, "extern char *const sigmesg[MAXSIG+1];\n");

      fputs(writer, cfile);
      fprintf(cfile, "#include \"shell.h\"\n\n");
      fprintf(cfile, "char *const sigmesg[%d] = {\n", maxsig + 1);
      for (i = 0 ; i <= maxsig ; i++) {
	    if (sigmesg[i] == NULL) {
		  fprintf(cfile, "      0,\n");
	    } else {
		  fprintf(cfile, "      \"%s\",\n", sigmesg[i]);
	    }
      }
      fprintf(cfile, "};\n");
      exit(0);
}