diff options
Diffstat (limited to 'coreutils/sort.c')
| -rw-r--r-- | coreutils/sort.c | 39 |
1 files changed, 30 insertions, 9 deletions
diff --git a/coreutils/sort.c b/coreutils/sort.c index e5f229648..127d68319 100644 --- a/coreutils/sort.c +++ b/coreutils/sort.c @@ -115,9 +115,9 @@ compare_ascii(const void *a, const void *b) Line *x, *y; doh = (Line **) a; - x = (Line *) *doh; + x = *doh; doh = (Line **) b; - y = (Line *) *doh; + y = *doh; // fprintf(stdout, "> %p: %s< %p: %s", x, x->data, y, y->data); return strcmp(x->data, y->data); @@ -127,7 +127,19 @@ compare_ascii(const void *a, const void *b) 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); } @@ -232,14 +244,20 @@ sort_main(int argc, char **argv) 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; @@ -252,15 +270,12 @@ sort_main(int argc, char **argv) } } - /* 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 { @@ -271,15 +286,21 @@ sort_main(int argc, char **argv) exit(0); } -/* $Id: sort.c,v 1.6 1999/12/22 23:02:12 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: 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. |