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#include "ficl.h"
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
/*
* Ficl interface to system (ANSI)
* Gets a newline (or NULL) delimited string from the input
* and feeds it to the ANSI system function...
* Example:
* system del *.*
* \ ouch!
*/
static void
ficlPrimitiveSystem(ficlVm *vm)
{
ficlCountedString *counted = (ficlCountedString *)vm->pad;
(void) ficlVmGetString(vm, counted, '\n');
if (FICL_COUNTED_STRING_GET_LENGTH(*counted) > 0) {
int returnValue = \
system(FICL_COUNTED_STRING_GET_POINTER(*counted));
if (returnValue) {
(void) sprintf(vm->pad, "System call returned %d\n",
returnValue);
ficlVmTextOut(vm, vm->pad);
ficlVmThrow(vm, FICL_VM_STATUS_QUIT);
}
} else {
ficlVmTextOut(vm, "Warning (system): nothing happened\n");
}
}
/*
* Ficl add-in to load a text file and execute it...
* Cheesy, but illustrative.
* Line oriented... filename is newline (or NULL) delimited.
* Example:
* load test.f
*/
#define BUFFER_SIZE 256
static void
ficlPrimitiveLoad(ficlVm *vm)
{
char buffer[BUFFER_SIZE];
char filename[BUFFER_SIZE];
ficlCountedString *counted = (ficlCountedString *)filename;
int line = 0;
FILE *f;
int result = 0;
ficlCell oldSourceId;
ficlString s;
(void) ficlVmGetString(vm, counted, '\n');
if (FICL_COUNTED_STRING_GET_LENGTH(*counted) <= 0) {
ficlVmTextOut(vm, "Warning (load): nothing happened\n");
return;
}
/*
* get the file's size and make sure it exists
*/
f = fopen(FICL_COUNTED_STRING_GET_POINTER(*counted), "r");
if (!f) {
ficlVmTextOut(vm, "Unable to open file ");
ficlVmTextOut(vm, FICL_COUNTED_STRING_GET_POINTER(*counted));
ficlVmTextOut(vm, "\n");
ficlVmThrow(vm, FICL_VM_STATUS_QUIT);
}
oldSourceId = vm->sourceId;
vm->sourceId.p = (void *)f;
/* feed each line to ficlExec */
while (fgets(buffer, BUFFER_SIZE, f)) {
int length = strlen(buffer) - 1;
line++;
if (length <= 0)
continue;
if (buffer[length] == '\n')
buffer[length--] = '\0';
FICL_STRING_SET_POINTER(s, buffer);
FICL_STRING_SET_LENGTH(s, length + 1);
result = ficlVmExecuteString(vm, s);
/* handle "bye" in loaded files. --lch */
switch (result) {
case FICL_VM_STATUS_OUT_OF_TEXT:
case FICL_VM_STATUS_USER_EXIT:
break;
default:
vm->sourceId = oldSourceId;
(void) fclose(f);
ficlVmThrowError(vm, "Error loading file <%s> line %d",
FICL_COUNTED_STRING_GET_POINTER(*counted), line);
break;
}
}
/*
* Pass an empty line with SOURCE-ID == -1 to flush
* any pending REFILLs (as required by FILE wordset)
*/
vm->sourceId.i = -1;
FICL_STRING_SET_FROM_CSTRING(s, "");
(void) ficlVmExecuteString(vm, s);
vm->sourceId = oldSourceId;
(void) fclose(f);
/* handle "bye" in loaded files. --lch */
if (result == FICL_VM_STATUS_USER_EXIT)
ficlVmThrow(vm, FICL_VM_STATUS_USER_EXIT);
}
/*
* Dump a tab delimited file that summarizes the contents of the
* dictionary hash table by hashcode...
*/
static void
ficlPrimitiveSpewHash(ficlVm *vm)
{
ficlHash *hash = ficlVmGetDictionary(vm)->forthWordlist;
ficlWord *word;
FILE *f;
unsigned i;
unsigned hashSize = hash->size;
if (!ficlVmGetWordToPad(vm))
ficlVmThrow(vm, FICL_VM_STATUS_OUT_OF_TEXT);
f = fopen(vm->pad, "w");
if (!f) {
ficlVmTextOut(vm, "unable to open file\n");
return;
}
for (i = 0; i < hashSize; i++) {
int n = 0;
word = hash->table[i];
while (word) {
n++;
word = word->link;
}
(void) fprintf(f, "%d\t%d", i, n);
word = hash->table[i];
while (word) {
(void) fprintf(f, "\t%s", word->name);
word = word->link;
}
(void) fprintf(f, "\n");
}
(void) fclose(f);
}
static void
ficlPrimitiveBreak(ficlVm *vm)
{
vm->state = vm->state;
}
void
ficlSystemCompileExtras(ficlSystem *system)
{
ficlDictionary *dictionary = ficlSystemGetDictionary(system);
(void) ficlDictionarySetPrimitive(dictionary, "break",
ficlPrimitiveBreak, FICL_WORD_DEFAULT);
(void) ficlDictionarySetPrimitive(dictionary, "load",
ficlPrimitiveLoad, FICL_WORD_DEFAULT);
(void) ficlDictionarySetPrimitive(dictionary, "spewhash",
ficlPrimitiveSpewHash, FICL_WORD_DEFAULT);
(void) ficlDictionarySetPrimitive(dictionary, "system",
ficlPrimitiveSystem, FICL_WORD_DEFAULT);
}
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