/[cvs]/stack/stack.c
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revision 1.50 by teddy, Thu Feb 7 23:52:20 2002 UTC revision 1.54 by teddy, Fri Feb 8 00:25:57 2002 UTC
# Line 1  Line 1 
1  /* printf */  /* printf, sscanf, fgets, fprintf */
2  #include <stdio.h>  #include <stdio.h>
3  /* EXIT_SUCCESS */  /* exit, EXIT_SUCCESS, malloc, free */
4  #include <stdlib.h>  #include <stdlib.h>
5  /* NULL */  /* NULL */
6  #include <stddef.h>  #include <stddef.h>
7  /* dlopen, dlsym, dlerror */  /* dlopen, dlsym, dlerror */
8  #include <dlfcn.h>  #include <dlfcn.h>
9  /* assert */  /* strcmp, strcpy, strlen, strcat, strdup */
 #include <assert.h>  
 /* strcat */  
10  #include <string.h>  #include <string.h>
11    
12  #define HASHTBLSIZE 65536  #define HASHTBLSIZE 65536
# Line 101  void free_val(value *val){ Line 99  void free_val(value *val){
99        }        }
100        free(val);                /* Free the actual list value */        free(val);                /* Free the actual list value */
101        break;        break;
102      default:      case integer:
103        case func:
104        case symb:
105        break;        break;
106      }      }
107    }    }
# Line 198  void push_cstring(stackitem **stack_head Line 198  void push_cstring(stackitem **stack_head
198  }  }
199    
200  /* Mangle a symbol name to a valid C identifier name */  /* Mangle a symbol name to a valid C identifier name */
201  char *mangle_(const char *old_string){  char *mangle_str(const char *old_string){
202    char validchars[]    char validchars[]
203      ="0123456789abcdef";      ="0123456789abcdef";
204    char *new_string, *current;    char *new_string, *current;
# Line 207  char *mangle_(const char *old_string){ Line 207  char *mangle_(const char *old_string){
207    strcpy(new_string, "sx_");    /* Stack eXternal */    strcpy(new_string, "sx_");    /* Stack eXternal */
208    current=new_string+3;    current=new_string+3;
209    while(old_string[0] != '\0'){    while(old_string[0] != '\0'){
210      current[0]=validchars[old_string[0]/16];      current[0]=validchars[(unsigned char)(old_string[0])/16];
211      current[1]=validchars[old_string[0]%16];      current[1]=validchars[(unsigned char)(old_string[0])%16];
212      current+=2;      current+=2;
213      old_string++;      old_string++;
214    }    }
# Line 233  extern void mangle(environment *env){ Line 233  extern void mangle(environment *env){
233      return;      return;
234    }    }
235    
236    new_string= mangle_((const char *)(env->head->item->content.ptr));    new_string= mangle_str((const char *)(env->head->item->content.ptr));
237    
238    toss(env);    toss(env);
239    if(env->err) return;    if(env->err) return;
# Line 296  void push_sym(environment *env, const ch Line 296  void push_sym(environment *env, const ch
296      funcptr= dlsym(handle, in_string); /* Get function pointer */      funcptr= dlsym(handle, in_string); /* Get function pointer */
297      dlerr=dlerror();      dlerr=dlerror();
298      if(dlerr != NULL) {         /* If no function was found */      if(dlerr != NULL) {         /* If no function was found */
299        mangled=mangle_(in_string);        mangled=mangle_str(in_string);
300        funcptr= dlsym(handle, mangled); /* try mangling it */        funcptr= dlsym(handle, mangled); /* try mangling it */
301        free(mangled);        free(mangled);
302        dlerr=dlerror();        dlerr=dlerror();
# Line 541  extern void eval(environment *env) Line 541  extern void eval(environment *env)
541      free(temp_string);      free(temp_string);
542      break;      break;
543    
544    default:    case integer:
545        break;
546    }    }
547  }  }
548    
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