File: s_paus.c

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#include "stdio.h"
#include "v3p_f2c.h"
#define PAUSESIG 15

#include "signal1.h"
#ifdef KR_headers
#define Void /* void */
#define Int /* int */
#else
#define Void void
#define Int int
#undef abs
#undef min
#undef max
#include "stdlib.h"
#ifdef __cplusplus
extern "C" {
#endif
#ifdef __cplusplus
extern "C" {
#endif
extern int getpid(void), isatty(int), pause(void);
#endif

extern VOID f_exit(Void);

#ifndef MSDOS
 static VOID
waitpause(Sigarg)
{       Use_Sigarg;
        return;
        }
#endif

 static VOID
#ifdef KR_headers
s_1paus(fin) FILE *fin;
#else
s_1paus(FILE *fin)
#endif
{
        fprintf(stderr,
        "To resume execution, type go.  Other input will terminate the job.\n");
        fflush(stderr);
        if( getc(fin)!='g' || getc(fin)!='o' || getc(fin)!='\n' ) {
                fprintf(stderr, "STOP\n");
#ifdef NO_ONEXIT
                f_exit();
#endif
                exit(0);
                }
        }

 int
#ifdef KR_headers
s_paus(s, n) char *s; ftnlen n;
#else
s_paus(char *s, ftnlen n)
#endif
{
        fprintf(stderr, "PAUSE ");
        if(n > 0)
                fprintf(stderr, " %.*s", (int)n, s);
        fprintf(stderr, " statement executed\n");
        if( isatty(fileno(stdin)) )
                s_1paus(stdin);
        else {
#ifdef MSDOS
                FILE *fin;
                fin = fopen("con", "r");
                if (!fin) {
                        fprintf(stderr, "s_paus: can't open con!\n");
                        fflush(stderr);
                        exit(1);
                        }
                s_1paus(fin);
                fclose(fin);
#else
                fprintf(stderr,
                "To resume execution, execute a   kill -%d %d   command\n",
                        PAUSESIG, getpid() );
                signal1(PAUSESIG, waitpause);
                fflush(stderr);
                pause();
#endif
                }
        fprintf(stderr, "Execution resumes after PAUSE.\n");
        fflush(stderr);
        return 0; /* NOT REACHED */
#ifdef __cplusplus
        }
#endif
}
#ifdef __cplusplus
}
#endif