/*
- * Mini find implementation for busybox
+ * Mini sort implementation for busybox
*
*
* Copyright (C) 1999 by Lineo, inc.
/* Comparison */
+/* ascii order */
static int
compare_ascii(const void *a, const void *b)
{
- return 0;
+ Line **doh;
+ Line *x, *y;
+
+ doh = (Line **) a;
+ x = *doh;
+ doh = (Line **) b;
+ y = *doh;
+
+ // fprintf(stdout, "> %p: %s< %p: %s", x, x->data, y, y->data);
+ return strcmp(x->data, y->data);
}
+/* numeric order */
static int
compare_numeric(const void *a, const void *b)
{
- return 0;
+ Line **doh;
+ Line *x, *y;
+ int xint, yint;
+
+ doh = (Line **) a;
+ x = *doh;
+ doh = (Line **) b;
+ y = *doh;
+
+ xint = strtoul(x->data, NULL, 10);
+ yint = strtoul(y->data, NULL, 10);
+
+ return (xint - yint);
}
}
/* apply qsort */
- qsort(self->sorted, sizeof(Line*), self->len, compare);
+ qsort(self->sorted, self->len, sizeof(Line*), compare);
return self;
}
char opt;
List list;
Line *l;
+ Compare *compare;
- /* default behaviour */
+ /* init */
+ compare = compare_ascii;
+ list_init(&list);
/* parse argv[] */
for (i = 1; i < argc; i++) {
if (argv[i][0] == '-') {
opt = argv[i][1];
switch (opt) {
+ case 'g':
+ compare = compare_numeric;
+ break;
case 'h':
usage(sort_usage);
break;
}
}
- /* initialize list */
- list_init(&list);
-
/* go through remaining args (if any) */
if (i >= argc) {
while ( (l = line_newFromFile(stdin))) {
list_insert(&list, l);
}
- list_sort(&list, compare_ascii);
+ list_sort(&list, compare);
list_writeToFile(&list, stdout);
list_release(&list);
} else {
exit(0);
}
-/* $Id: sort.c,v 1.5 1999/12/22 22:27:01 beppu Exp $ */
+/* $Id: sort.c,v 1.7 1999/12/23 00:02:49 beppu Exp $ */
/*
* $Log: sort.c,v $
+ * Revision 1.7 1999/12/23 00:02:49 beppu
+ * implemented numeric sort (sort -g)
+ *
+ * Revision 1.6 1999/12/22 23:02:12 beppu
+ * oops.. qsort(2) misunderstanding on my part.
+ * it's ok, now.
+ *
* Revision 1.5 1999/12/22 22:27:01 beppu
- * playing w/ $Log$
+ * playing w/ $Log: sort.c,v $
+ * playing w/ Revision 1.7 1999/12/23 00:02:49 beppu
+ * playing w/ implemented numeric sort (sort -g)
+ * playing w/
+ * playing w/ Revision 1.6 1999/12/22 23:02:12 beppu
+ * playing w/ oops.. qsort(2) misunderstanding on my part.
+ * playing w/ it's ok, now.
+ * playing w/
*
*/