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Diff for /OpenXM/src/kan96xx/Kan/ext.c between version 1.1.1.1 and 1.38

version 1.1.1.1, 1999/10/08 02:12:02 version 1.38, 2005/07/03 11:08:53
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   /* $OpenXM: OpenXM/src/kan96xx/Kan/ext.c,v 1.37 2005/06/16 06:21:21 takayama Exp $ */
 #include <stdio.h>  #include <stdio.h>
   #include <string.h>
 #include <sys/types.h>  #include <sys/types.h>
 #include <sys/stat.h>  #include <sys/stat.h>
 #include <fcntl.h>  #include <fcntl.h>
Line 11 
Line 13 
 #include "extern2.h"  #include "extern2.h"
 #include <signal.h>  #include <signal.h>
 #include "plugin.h"  #include "plugin.h"
   #include "kclass.h"
   #include <ctype.h>
   #include <errno.h>
   #include <regex.h>
   #include "ox_pathfinder.h"
   
   extern int Quiet;
   extern char **environ;
   
 #define MYCP_SIZE 100  #define MYCP_SIZE 100
 static int Mychildren[MYCP_SIZE];  static int Mychildren[MYCP_SIZE];
 static int Mycp = 0;  static int Mycp = 0;
   static int Verbose_mywait = 0;
 static void mywait() {  static void mywait() {
   int status;    int status;
   int pid;    int pid;
   int i,j;    int i,j;
   signal(SIGCHLD,SIG_IGN);    /* signal(SIGCHLD,SIG_IGN); */
   pid = wait(&status);    pid = wait(&status);
   fprintf(stderr,"Child process %d is exiting.\n",pid);    if ((!Quiet) && (Verbose_mywait)) fprintf(stderr,"Child process %d is exiting.\n",pid);
   for (i=0; i<Mycp; i++) {    for (i=0; i<Mycp; i++) {
     if (Mychildren[i]  == pid) {      if (Mychildren[i]  == pid) {
       for (j=i; j<Mycp-1; j++) {        for (j=i; j<Mycp-1; j++) {
         Mychildren[j] = Mychildren[j+1];          Mychildren[j] = Mychildren[j+1];
       }        }
       if (Mycp > 0) Mycp--;        if (Mycp > 0) Mycp--;
     }      }
Line 34  static void mywait() {
Line 45  static void mywait() {
 }  }
   
 #define SIZE_OF_ENVSTACK 5  #define SIZE_OF_ENVSTACK 5
 static jmp_buf EnvStack[SIZE_OF_ENVSTACK];  #if defined(__CYGWIN__)
   #define JMP_BUF sigjmp_buf
   #else
   #define JMP_BUF jmp_buf
   #endif
   static JMP_BUF EnvStack[SIZE_OF_ENVSTACK];
 static int Envp = 0;  static int Envp = 0;
 static void pushEnv(jmp_buf jb) {  static void pushEnv(JMP_BUF jb) {
   if (Envp < SIZE_OF_ENVSTACK) {    if (Envp < SIZE_OF_ENVSTACK) {
     *(EnvStack[Envp]) = *jb;      *(EnvStack[Envp]) = *jb;
     Envp++;      Envp++;
Line 45  static void pushEnv(jmp_buf jb) {
Line 61  static void pushEnv(jmp_buf jb) {
     exit(2);      exit(2);
   }    }
 }  }
 static void popEnv(jmp_buf jbp) {  static void popEnv(JMP_BUF jbp) {
   if (Envp <= 0) {    if (Envp <= 0) {
     fprintf(stderr,"Underflow of EnvStack.\n");      fprintf(stderr,"Underflow of EnvStack.\n");
     exit(3);      exit(3);
Line 73  static char *ext_generateUniqueFileName(char *s)
Line 89  static char *ext_generateUniqueFileName(char *s)
   return(NULL);    return(NULL);
 }  }
   
   static struct object oregexec(struct object oregex,struct object ostrArray,struct object oflag);
   
 struct object Kextension(struct object obj)  struct object Kextension(struct object obj)
 {  {
   char *key;    char *key;
   int size;    int size;
   struct object keyo;    struct object keyo = OINIT;
   struct object rob = NullObject;    struct object rob = NullObject;
   struct object obj1,obj2,obj3,obj4;    struct object obj1 = OINIT;
   int m,i;    struct object obj2 = OINIT;
     struct object obj3 = OINIT;
     struct object obj4 = OINIT;
     int m,i,pid, uid;
   int argListc, fdListc;    int argListc, fdListc;
   char *abc;    char *abc;
   char *abc2;    char *abc2;
   extern struct context *CurrentContextp;    extern struct context *CurrentContextp;
   #if (__CYGWIN__)
     extern sigjmp_buf EnvOfStackMachine;
   #else
   extern jmp_buf EnvOfStackMachine;    extern jmp_buf EnvOfStackMachine;
   #endif
   extern void ctrlC();    extern void ctrlC();
   extern int SigIgn;    extern int SigIgn;
   extern errno;  
   extern int DebugCMO;    extern int DebugCMO;
   extern int OXprintMessage;    extern int OXprintMessage;
   struct stat buf;    struct stat buf;
   char **argv;    char **argv;
   FILE *fp;    FILE *fp;
   void (*oldsig)();    void (*oldsig)();
     extern SecureMode;
     extern char *UD_str;
     extern int UD_attr;
   
   if (obj.tag != Sarray) errorKan1("%s\n","Kextension(): The argument must be an array.");    if (obj.tag != Sarray) errorKan1("%s\n","Kextension(): The argument must be an array.");
   size = getoaSize(obj);    size = getoaSize(obj);
Line 128  struct object Kextension(struct object obj)
Line 155  struct object Kextension(struct object obj)
     obj1 = getoa(obj,1);      obj1 = getoa(obj,1);
     if (obj1.tag != Sinteger) errorKan1("%s\n","[(chattrs)  num] extension.");      if (obj1.tag != Sinteger) errorKan1("%s\n","[(chattrs)  num] extension.");
     m = KopInteger(obj1);      m = KopInteger(obj1);
     if (!( m == 0 || m == PROTECT || m == ABSOLUTE_PROTECT))          /* if (!( m == 0 || m == PROTECT || m == ABSOLUTE_PROTECT || m == ATTR_INFIX))
       errorKan1("%s\n","The number must be 0, 1 or 2.");             errorKan1("%s\n","The number must be 0, 1 or 2.");*/
     putUserDictionary2((char *)NULL,0,0,m | SET_ATTR_FOR_ALL_WORDS,      putUserDictionary2((char *)NULL,0,0,m | SET_ATTR_FOR_ALL_WORDS,
                        CurrentContextp->userDictionary);                         CurrentContextp->userDictionary);
     }else if (strcmp(key,"or_attrs")==0) {
       if (size != 2) errorKan1("%s\n","[(or_attrs)  num] extension.");
       obj1 = getoa(obj,1);
       if (obj1.tag != Sinteger) errorKan1("%s\n","[(or_attrs)  num] extension.");
       m = KopInteger(obj1);
       putUserDictionary2((char *)NULL,0,0,m | OR_ATTR_FOR_ALL_WORDS,
                          CurrentContextp->userDictionary);
   }else if (strcmp(key,"keywords")==0) {    }else if (strcmp(key,"keywords")==0) {
     if (size != 1) errorKan1("%s\n","[(keywords)] extension.");      if (size != 1) errorKan1("%s\n","[(keywords)] extension.");
     rob = showSystemDictionary(1);      rob = showSystemDictionary(1);
     /*  }else if (strcmp(key,"fork0")==0) {      /*  }else if (strcmp(key,"fork0")==0) {
         if (size != 2) errorKan1("%s\n","[(fork0) sss] extension.");          if (size != 2) errorKan1("%s\n","[(fork0) sss] extension.");
         m = fork();          m = fork();
         if (m>0) { rob = KpoInteger(m); }          if (m>0) { rob = KpoInteger(m); }
         else {          else {
           system(KopString(getoa(obj,1))); exit(0);          system(KopString(getoa(obj,1))); exit(0);
         } */          } */
     }else if (strcmp(key,"defaultPolyRing")==0) {    }else if (strcmp(key,"defaultPolyRing")==0) {
       if (size != 2) errorKan1("%s\n","[(defaultPolyRing) n] extension.");      if (size != 2) errorKan1("%s\n","[(defaultPolyRing) n] extension.");
       rob = KdefaultPolyRing(getoa(obj,1));      rob = KdefaultPolyRing(getoa(obj,1));
     }else if (strcmp(key,"getenv")==0) {    }else if (strcmp(key,"getenv")==0) {
       if (size != 2) errorKan1("%s\n","[(getenv) envstr] extension.");      if (size != 2) errorKan1("%s\n","[(getenv) envstr] extension.");
       obj1 = getoa(obj,1);      obj1 = getoa(obj,1);
       if (obj1.tag != Sdollar) errorKan1("%s\n","[(getenv) envstr] extension");      if (obj1.tag != Sdollar) errorKan1("%s\n","[(getenv) envstr] extension");
       abc = getenv(KopString(obj1));      abc = getenv(KopString(obj1));
       if (abc == NULL) {  #if defined(__CYGWIN__)
         rob = NullObject;      if (abc == NULL) {
             abc2 = (char *)sGC_malloc(sizeof(char)*(strlen(KopString(obj1))+2));
         strcpy(abc2,KopString(obj1));
             for (i=0; i<strlen(abc2); i++) {
                   abc2[i] = toupper(abc2[i]);
             }
         abc = getenv(abc2);
       }
   #endif
       if (abc == NULL) {
         rob = NullObject;
       }else{
         abc2 = (char *)sGC_malloc(sizeof(char)*(strlen(abc)+2));
         strcpy(abc2,abc);
         rob = KpoString(abc2);
       }
     }else if (strcmp(key,"stat")==0) {
       if (size != 2) errorKan1("%s\n","[(stat) fname] extension.");
       obj1 = getoa(obj,1);
       if (obj1.tag != Sdollar) errorKan1("%s\n","[(stat) fname] extension ; string fname.");
       m = stat(KopString(obj1),&buf);
       rob = newObjectArray(2);
       if (m == -1) {
         /* fail */
         obj2 = NullObject;
         putoa(rob,0,obj2);
         obj3 = newObjectArray(2);
         putoa(obj3,0,KpoString("error no"));
         putoa(obj3,1,KpoInteger(errno));
         putoa(rob,1,obj3);
       }else{
         /* success */
         putoa(rob,0,KpoInteger(0));
         obj3 = newObjectArray(1);
         putoa(obj3,0,KpoInteger((int) buf.st_size));
         putoa(rob,1,obj3); /* We have not yet read buf fully */
       }
     }else if (strcmp(key,"gethostname")==0) {
       abc = (char *)sGC_malloc(sizeof(char)*1024);
       if (gethostname(abc,1023) < 0) {
             errorKan1("%s\n","hostname could not be obtained.");
           }
           rob = KpoString(abc);
     }else if (strcmp(key,"forkExec")==0) {
       if (size != 4) errorKan1("%s\n","[(forkExec) argList fdList sigblock] extension.");
       obj1 = getoa(obj,1);
           if (obj1.tag == Sdollar) {
             obj1 = KstringToArgv(obj1);
           }
       if (obj1.tag != Sarray) errorKan1("%s\n","[(forkExec) argList fdList sigblock] extension. array argList.");
           obj2 = getoa(obj,2);
       if (obj2.tag != Sarray) errorKan1("%s\n","[(forkExec) argList fdList sigblock] extension. array fdList.");
       obj3 = getoa(obj,3);
       if (obj3.tag != Sinteger) errorKan1("%s\n","[(forkExec) argList fdList sigblock] extension. integer sigblock.");
       m = KopInteger(obj3);  /* m&1 : block ctrl-C. */
       argListc = getoaSize(obj1);
       fdListc =  getoaSize(obj2);
       if ((pid = fork()) > 0) {
         /* parent */
         if (m&2) {
            /* Do not call singal to turn around a trouble on cygwin. BUG. */
       }else{        }else{
         abc2 = (char *)sGC_malloc(sizeof(char)*(strlen(abc)+2));           signal(SIGCHLD,mywait); /* to kill Zombie */
         strcpy(abc2,abc);  
         rob = KpoString(abc2);  
       }        }
     }else if (strcmp(key,"stat")==0) {        Mychildren[Mycp++] = pid;
       if (size != 2) errorKan1("%s\n","[(stat) fname] extension.");        if (Mycp >= MYCP_SIZE-1) {
       obj1 = getoa(obj,1);          errorKan1("%s\n","Child process table is full.\n");
       if (obj1.tag != Sdollar) errorKan1("%s\n","[(stat) fname] extension ; string fname.");          Mycp = 0;
       m = stat(KopString(obj1),&buf);  
       rob = newObjectArray(2);  
       if (m == -1) {  
         /* fail */  
         obj2 = NullObject;  
         putoa(rob,0,obj2);  
         obj3 = newObjectArray(2);  
         putoa(obj3,0,KpoString("error no"));  
         putoa(obj3,1,KpoInteger(errno));  
         putoa(rob,1,obj3);  
       }else{  
         /* success */  
         putoa(rob,0,KpoInteger(0));  
         putoa(rob,1,newObjectArray(0)); /* We have not yet read buf */  
       }        }
     }else if (strcmp(key,"forkExec")==0) {        rob = KpoInteger(pid);
       if (size != 4) errorKan1("%s\n","[(forkExec) argList fdList sigblock] extension.");        /* Done */
       obj1 = getoa(obj,1);      }else{
       if (obj1.tag != Sarray) errorKan1("%s\n","[(forkExec) argList fdList sigblock] extension. array argList.");        /* Child */
       obj2 = getoa(obj,2);        for (i=0; i<fdListc; i++) {
       if (obj2.tag != Sarray) errorKan1("%s\n","[(forkExec) argList fdList sigblock] extension. array fdList.");          /* close the specified files */
       obj3 = getoa(obj,3);          close(KopInteger(getoa(obj2,i)));
       if (obj3.tag != Sinteger) errorKan1("%s\n","[(forkExec) argList fdList sigblock] extension. integer sigblock.");        }
       m = KopInteger(obj3);  /* m == 1 : block ctrl-C. */        /* execl */
       argListc = getoaSize(obj1);        if (m&1) {
       fdListc =  getoaSize(obj2);          {
       if ((m = fork()) > 0) {            sigset_t sss;
         /* parent */            sigemptyset(&sss);
         signal(SIGCHLD,mywait); /* to kill Zombie */            sigaddset(&sss,SIGINT);
         Mychildren[Mycp++] = m;            sigprocmask(SIG_BLOCK,&sss,NULL);
         if (Mycp >= MYCP_SIZE-1) {          }
           errorKan1("%s\n","Child process table is full.\n");        }
           Mycp = 0;        argv = (char **) sGC_malloc(sizeof(char *)*(argListc+1));
         }        if (argv == NULL) {
         rob = KpoInteger(m);          fprintf(stderr," no more momory. forkExec --- exiting.\n");
         /* Done */          _exit(10);
       }else{        }
         /* Child */        for (i=0; i<argListc; i++) {
         for (i=0; i<fdListc; i++) {          argv[i] = KopString(getoa(obj1,i));
           /* close the specified files */          argv[i+1] = NULL;
           close(KopInteger(getoa(obj2,i)));        }
         }  
         /* execl */        if (m&4) {
         if (m == 1) {          fprintf(stderr,"execv %s\n",argv[0]);
           {          sleep(5);
             sigset_t sss;          fprintf(stderr,">>>\n");
             sigemptyset(&sss);        }
             sigaddset(&sss,SIGINT);        execve(argv[0],argv,environ);
             sigprocmask(SIG_BLOCK,&sss,NULL);        /* This place will never be reached unless execv fails. */
         fprintf(stderr,"forkExec fails: ");
         for (i=0; i<argListc; i++) {
           fprintf(stderr,"%s ",argv[i]);
         }
         fprintf(stderr,"\nExiting, but staying as Zombie.\n");
         _exit(10);
       }
     }else if (strcmp(key,"getchild")==0) {
       if (size != 1) errorKan1("%s\n","[(getchild)] extension.");
       rob = newObjectArray(Mycp);
       for (i=0; i<Mycp; i++) {
         putoa(rob,i,KpoInteger(Mychildren[i]));
       }
     }else if (strcmp(key,"getUniqueFileName")==0) {
       if (size != 2) errorKan1("%s\n","[(getUniqueFileName) path] extension.");
       obj1 = getoa(obj,1);
       if (obj1.tag != Sdollar) errorKan1("%s\n","[(getUniqueFileName) path] extension. path must be a string.");
       rob = KpoString(ext_generateUniqueFileName(KopString(obj1)));
     }else if (strcmp(key,"outputObjectToFile")==0) {
       if (size != 3) errorKan1("%s\n","[(outputObjectToFile) path obj] extension.");
       obj1 = getoa(obj,1);
       if (obj1.tag != Sdollar) errorKan1("%s\n","[(outputObjectToFile) path obj] extension. path must be a string.");
       obj2 = getoa(obj,2);
       fp = fopen(KopString(obj1),"w");
       if (fp == NULL) errorKan1("%s\n","[(outputObjectToFile) path object] extension : could not open the path.");
       printObject(obj2,0,fp);
       fclose(fp);
       rob = NullObject;
     }else if (strcmp(key,"getAttributeList")==0) {
       if (size != 2) errorKan1("%s\n","[(getAttributeList) ob] extension rob");
       rob = KgetAttributeList(getoa(obj,1));
     }else if (strcmp(key,"setAttributeList")==0) {
       if (size != 3) errorKan1("%s\n","[(setAttributeList) ob attrlist] extension rob");
       rob = KsetAttributeList(getoa(obj,1), getoa(obj,2));
     }else if (strcmp(key,"getAttribute")==0) {
       if (size != 3) errorKan1("%s\n","[(getAttribute) ob key] extension rob");
       rob = KgetAttribute(getoa(obj,1),getoa(obj,2));
     }else if (strcmp(key,"setAttribute")==0) {
       if (size != 4) errorKan1("%s\n","[(setAttributeList) ob key value] extension rob");
       rob = KsetAttribute(getoa(obj,1), getoa(obj,2),getoa(obj,3));
     }else if (strcmp(key,"hilbert")==0) {
       if (size != 3) errorKan1("%s\n","[(hilbert) obgb obvlist] extension.");
       rob = hilberto(getoa(obj,1),getoa(obj,2));
     }else if (strcmp(key,"nobody") == 0) {
         uid = getuid();
             if (uid == 0) {
   #define NOBODY 65534
                   /* If I'm a super user, then change uid to nobody. */
                   if (setuid(NOBODY) != 0) {
                     fprintf(stderr,"Failed to change uid to nobody (%d)\n",NOBODY);
                     exit(10);
                   }
                   fprintf(stderr,"uid is changed to nobody (%d).\n",NOBODY);
                   rob.tag = Snull;
           }            }
         }    }else if (strcmp(key,"chattr")==0) {
         argv = (char **) sGC_malloc(sizeof(char *)*(argListc+1));      if (size != 3) errorKan1("%s\n","[(chattr)  num symbol] extension.");
         if (argv == NULL) {      obj1 = getoa(obj,1);
           fprintf(stderr," no more momory. forkExec --- exiting.\n");      obj2 = getoa(obj,2);
           _exit(10);      if (obj1.tag != Sinteger) errorKan1("%s\n","[(chattr)  num symbol] extension.");
         }      if (obj2.tag != Sstring)  errorKan1("%s\n","[(chattr)  num symbol] extension.");
         for (i=0; i<argListc; i++) {      m = KopInteger(obj1);
           argv[i] = KopString(getoa(obj1,i));          /* if (!( m == 0 || m == PROTECT || m == ABSOLUTE_PROTECT || m == ATTR_INFIX))
           argv[i+1] = NULL;             errorKan1("%s\n","The number must be 0, 1 or 2.");*/
         }      putUserDictionary2(obj2.lc.str,(obj2.rc.op->lc).ival,(obj2.rc.op->rc).ival,
         execv(argv[0],argv);                         m,CurrentContextp->userDictionary);
         /* This place will never be reached unless execv fails. */    }else if (strcmp(key,"or_attr")==0) {
         fprintf(stderr,"forkExec fails: ");      if (size != 3) errorKan1("%s\n","[(or_attr)  num symbol] extension.");
         for (i=0; i<argListc; i++) {      obj1 = getoa(obj,1);
           fprintf(stderr,"%s ",argv[i]);      obj2 = getoa(obj,2);
         }      if (obj1.tag != Sinteger) errorKan1("%s\n","[(or_attr)  num symbol] extension.");
         fprintf(stderr,"\nExiting, but staying as Zombie.\n");      if (obj2.tag != Sstring)  errorKan1("%s\n","[(or_attr)  num symbol] extension.");
         _exit(10);      m = KopInteger(obj1);
       rob = KfindUserDictionary(obj2.lc.str);
       if (rob.tag != NoObject.tag) {
         if (strcmp(UD_str,obj2.lc.str) == 0) {
           m |= UD_attr;
         }else errorKan1("%s\n","or_attr: internal error.");
       }
       rob = KpoInteger(m);
       putUserDictionary2(obj2.lc.str,(obj2.rc.op->lc).ival,(obj2.rc.op->rc).ival,
                          m,CurrentContextp->userDictionary);
     }else if (strcmp(key,"getattr")==0) {
       if (size != 2) errorKan1("%s\n","[(getattr) symbol] extension.");
       obj1 = getoa(obj,1);
       if (obj1.tag != Sstring)  errorKan1("%s\n","[(getattr) symbol] extension.");
       rob = KfindUserDictionary(obj1.lc.str);
           if (rob.tag != NoObject.tag) {
             if (strcmp(UD_str,obj1.lc.str) == 0) {
                   rob = KpoInteger(UD_attr);
             }else errorKan1("%s\n","getattr: internal error.");
           }else rob = NullObject;
     }else if (strcmp(key,"getServerEnv")==0) {
       if (size != 2) errorKan1("%s\n","[(getServerEnv) serverName] extension.");
       obj1 = getoa(obj,1);
       if (obj1.tag != Sdollar) errorKan1("%s\n","[(getServerEnv) serverName] extension.");
       {
         char **se; int ii; int nn;
         se = getServerEnv(KopString(obj1));
         if (se == NULL) {
           debugServerEnv(KopString(obj1));
           rob = NullObject;
         }else{
           for (ii=0,nn=0; se[ii] != NULL; ii++) nn++;
           rob = newObjectArray(nn);
           for (ii=0; ii<nn; ii++) {
             putoa(rob,ii,KpoString(se[ii]));
           }
       }        }
     }else if (strcmp(key,"getchild")==0) {      }
       if (size != 1) errorKan1("%s\n","[(getchild)] extension.");    }else if (strcmp(key,"read")==0) {
       rob = newObjectArray(Mycp);      if (size != 3) errorKan1("%s\n","[(read) fd size] extension.");
       for (i=0; i<Mycp; i++) {      obj1 = getoa(obj,1);
         putoa(rob,i,KpoInteger(Mychildren[i]));      if (obj1.tag != Sinteger) errorKan1("%s\n","[(read) fd size] extension. fd must be an integer.");
       obj2 = getoa(obj,2);
       if (obj2.tag != Sinteger) errorKan1("%s\n","[(read) fd size] extension. size must be an integer.");
       {
         int total, n, fd;
         char *s; char *s0;
         fd = KopInteger(obj1);
         total = KopInteger(obj2);
         if (total <= 0) errorKan1("%s\n","[(read) ...]; negative size has not yet been implemented.");
         /* Return a string. todo: implement SbyteArray case. */
         s0 = s = (char *) sGC_malloc(total+1);
         if (s0 == NULL) errorKan1("%s\n","[(read) ...]; no more memory.");
         while (total >0) {
           n = read(fd, s, total);
           if (n < 0) { perror("read"); errorKan1("%s\n","[(read) ...]; read error.");}
           s[n] = 0;
           total -= n;  s = &(s[n]);
       }        }
     }else if (strcmp(key,"getUniqueFileName")==0) {        rob = KpoString(s0);
       if (size != 2) errorKan1("%s\n","[(getUniqueFileName) path] extension.");      }
       obj1 = getoa(obj,1);    }else if (strcmp(key,"regionMatches")==0) {
       if (obj1.tag != Sdollar) errorKan1("%s\n","[(getUniqueFileName) path] extension. path must be a string.");      if (size != 3) errorKan1("%s\n","[(regionMatches) str strArray] extension.");
       rob = KpoString(ext_generateUniqueFileName(KopString(obj1)));      obj1 = getoa(obj,1);
     }else if (strcmp(key,"outputObjectToFile")==0) {      if (obj1.tag != Sdollar) errorKan1("%s\n","[(regionMatches) str strArray] extension. str must be a string.");
       if (size != 3) errorKan1("%s\n","[(outputObjectToFile) path obj] extension.");          obj2 = getoa(obj,2);
       obj1 = getoa(obj,1);      if (obj2.tag != Sarray) errorKan1("%s\n","[(regionMatches) str strArray] extension. strArray must be an array.");
       if (obj1.tag != Sdollar) errorKan1("%s\n","[(outputObjectToFile) path obj] extension. path must be a string.");      rob = KregionMatches(obj1,obj2);
       obj2 = getoa(obj,2);    }else if (strcmp(key,"newVector")==0) {
       fp = fopen(KopString(obj1),"w");      if (size != 2) errorKan1("%s\n","[(newVector) m] extension.");
       if (fp == NULL) errorKan1("%s\n","[(outputObjectToFile) path object] extension : could not open the path.");      obj1 = getoa(obj,1);
       printObject(obj2,0,fp);      if (obj1.tag != Sinteger) errorKan1("%s\n","[(newVector) m] extension. m must be an integer.");
       fclose(fp);      rob = newObjectArray(KopInteger(obj1));
     }else if (strcmp(key,"newMatrix")==0) {
       if (size != 3) errorKan1("%s\n","[(newMatrix) m n] extension.");
       obj1 = getoa(obj,1);
       if (obj1.tag != Sinteger) errorKan1("%s\n","[(newMatrix) m n] extension. m must be an integer.");
           obj2 = getoa(obj,2);
       if (obj2.tag != Sinteger) errorKan1("%s\n","[(newMatrix) m n] extension. n must be an integer.");
       rob = newObjectArray(KopInteger(obj1));
           for (i=0; i<KopInteger(obj1); i++) {
         putoa(rob,i,newObjectArray(KopInteger(obj2)));
           }
     }else if (strcmp(key,"ooPower")==0) {
       if (size != 3) errorKan1("%s\n","[(ooPower) a b] extension.");
       obj1 = getoa(obj,1);
           obj2 = getoa(obj,2);
       rob = KooPower(obj1,obj2);
     }else if (strcmp(key,"Krest")==0) {
       if (size != 2) errorKan1("%s\n","[(Krest) a] extension b");
       obj1 = getoa(obj,1);
       rob = Krest(obj1);
     }else if (strcmp(key,"Kjoin")==0) {
       if (size != 3) errorKan1("%s\n","[(Kjoin) a b] extension c");
       obj1 = getoa(obj,1);
           obj2 = getoa(obj,2);
       rob = Kjoin(obj1,obj2);
     }else if (strcmp(key,"ostype")==0) {
       rob = newObjectArray(1);
       /* Hard encode the OS type. */
   #if defined(__CYGWIN__)
       putoa(rob,0,KpoString("windows"));
   #else
       putoa(rob,0,KpoString("unix"));
   #endif
     }else if (strcmp(key,"traceClearStack")==0) {
       traceClearStack();
       rob = NullObject;
     }else if (strcmp(key,"traceShowStack")==0) {
       char *ssst;
       ssst = traceShowStack();
       if (ssst != NULL) {
         rob = KpoString(ssst);
       }else{
       rob = NullObject;        rob = NullObject;
     }else if (strcmp(key,"hilbert")==0) {  
       if (size != 3) errorKan1("%s\n","[(hilbert) obgb obvlist] extension.");  
       rob = hilberto(getoa(obj,1),getoa(obj,2));  
     }else if (strcmp(key,"chattr")==0) {  
       if (size != 3) errorKan1("%s\n","[(chattr)  num symbol] extension.");  
       obj1 = getoa(obj,1);  
       obj2 = getoa(obj,2);  
       if (obj1.tag != Sinteger) errorKan1("%s\n","[(chattr)  num symbol] extension.");  
       if (obj2.tag != Sstring)  errorKan1("%s\n","[(chattr)  num symbol] extension.");  
       m = KopInteger(obj1);  
       if (!( m == 0 || m == PROTECT || m == ABSOLUTE_PROTECT))  
         errorKan1("%s\n","The number must be 0, 1 or 2.");  
       putUserDictionary2(obj2.lc.str,(obj2.rc.op->lc).ival,(obj2.rc.op->rc).ival,  
                          m,CurrentContextp->userDictionary);  
     }      }
     }else if (strcmp(key,"regexec")==0) {
       if ((size != 3) && (size != 4)) errorKan1("%s\n","[(regexec) reg strArray flag(optional)] extension b");
       obj1 = getoa(obj,1);
       if (obj1.tag != Sdollar) errorKan1("%s\n","regexec, the first argument should be a string (regular expression).");
       obj2 = getoa(obj,2);
       if (obj2.tag != Sarray) errorKan1("%s\n","regexec, the second argument should be an array of a string.");
       if (size == 3) obj3 = newObjectArray(0);
       else obj3 = getoa(obj,3);
       rob = oregexec(obj1,obj2,obj3);
     }else if (strcmp(key,"unlink")==0) {
       if (size != 2) errorKan1("%s\n","[(unlink) filename] extension b");
       obj1 = getoa(obj,1);
       if (obj1.tag != Sdollar) errorKan1("%s\n","unlink, the first argument should be a string (filename).");
       rob = KpoInteger(oxDeleteFile(KopString(obj1)));
     }
 #include "plugin.hh"  #include "plugin.hh"
   #include "Kclass/tree.hh"
   else{    else{
     errorKan1("%s\n","Unknown tag for extension.");          fprintf(stderr,"key=%s; ",key);
       errorKan1("%s\n","Unknown key for extension.");
   }    }
   
   
   return(rob);    return(rob);
 }  }
   
   struct object KregionMatches(struct object sobj, struct object keyArray)
   {
     struct object rob = OINIT;
     int n,i,j,m,keyn;
     char *s,*key;
     rob = newObjectArray(3);
     getoa(rob,0) = KpoInteger(-1);
     getoa(rob,1) = NullObject;
     getoa(rob,2) = NullObject;
   
     if (sobj.tag != Sdollar) return rob;
     if (keyArray.tag != Sarray) return rob;
     n = getoaSize(keyArray);
     for (i=0; i<n; i++) {
           if (getoa(keyArray,i).tag != Sdollar) { return rob; }
     }
   
     s = KopString(sobj);
     m = strlen(s);
   
     for (i=0; i<n; i++) {
           key = KopString(getoa(keyArray,i));
           keyn = strlen(key);
           for (j=0; j<m; j++) {
             if (strncmp(&(s[j]),key,keyn) == 0) {
                   getoa(rob,0) = KpoInteger(j);
                   getoa(rob,1) = KpoString(key);
                   getoa(rob,2) = KpoInteger(i);
                   return rob;
             }
           }
     }
     return rob;
   }
   
   static struct object oregexec(struct object oregex,struct object ostrArray,struct object oflag) {
     struct object rob = OINIT;
     struct object ob = OINIT;
     int n,i,j,m,keyn,cflag,eflag,er;
     char *regex;
     regex_t preg;
     char *s;
     char *mbuf; int mbufSize;
   #define REGMATCH_SIZE 100
     regmatch_t pmatch[100]; size_t nmatch;
     int size;
   
     nmatch = (size_t) REGMATCH_SIZE;
     rob = newObjectArray(0);
     mbufSize = 1024;
   
     if (oregex.tag != Sdollar) return rob;
     if (ostrArray.tag != Sarray) return rob;
     n = getoaSize(ostrArray);
     for (i=0; i<n; i++) {
       if (getoa(ostrArray,i).tag != Sdollar) { return rob; }
     }
     if (oflag.tag != Sarray) errorKan1("%s\n","oregexec: oflag should be an array of integers.");
     cflag = eflag = 0;
     oflag = Kto_int32(oflag);
     for (i=0; i<getoaSize(oflag); i++) {
       ob = getoa(oflag,i);
       if (ob.tag != Sinteger) errorKan1("%s\n","oregexec: oflag is not an array of integers.");
       if (i == 0) cflag = KopInteger(ob);
       if (i == 1) eflag = KopInteger(ob);
     }
   
     regex = KopString(oregex);
     if (er=regcomp(&preg,regex,cflag)) {
       mbuf = (char *) sGC_malloc(mbufSize);
       if (mbuf == NULL) errorKan1("%s\n","No more memory.");
       regerror(er,&preg,mbuf,mbufSize-1);
       errorKan1("regcomp error: %s\n",mbuf);
     }
   
     size = 0; /* We should use list instead of counting the size. */
     for (i=0; i<n; i++) {
       s = KopString(getoa(ostrArray,i));
       er=regexec(&preg,s,nmatch,pmatch,eflag);
       if ((er != 0) && (er != REG_NOMATCH)) {
         mbuf = (char *) sGC_malloc(mbufSize);
         if (mbuf == NULL) errorKan1("%s\n","No more memory.");
         regerror(er,&preg,mbuf,mbufSize-1);
         errorKan1("regcomp error: %s\n",mbuf);
       }
       if (er == 0) size++;
     }
   
     rob = newObjectArray(size);
     size = 0;
     for (i=0; i<n; i++) {
       s = KopString(getoa(ostrArray,i));
       er=regexec(&preg,s,nmatch,pmatch,eflag);
       if ((er != 0) && (er != REG_NOMATCH)) {
         mbuf = (char *) sGC_malloc(mbufSize);
         if (mbuf == NULL) errorKan1("%s\n","No more memory.");
         regerror(er,&preg,mbuf,mbufSize-1);
         errorKan1("regcomp error: %s\n",mbuf);
       }
       if (er == 0) {
         ob = newObjectArray(3);
         putoa(ob,0,KpoString(s));
         /* temporary */
         putoa(ob,1,KpoInteger((int) (pmatch[0].rm_so)));
         putoa(ob,2,KpoInteger((int) (pmatch[0].rm_eo)));
         putoa(rob,size,ob);
         size++;
       }
     }
     regfree(&preg);
     return rob;
   }
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  Added in v.1.38
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