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51a186f7 RB |
1 | /* Copyright (C) 1999,2000,2001,2003 Free Software Foundation, Inc. |
2 | * | |
3 | * This library is free software; you can redistribute it and/or | |
4 | * modify it under the terms of the GNU Lesser General Public | |
5 | * License as published by the Free Software Foundation; either | |
6 | * version 2.1 of the License, or (at your option) any later version. | |
7 | * | |
8 | * This library is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * Lesser General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU Lesser General Public | |
14 | * License along with this library; if not, write to the Free Software | |
15 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
16 | */ | |
17 | ||
18 | /* some bits originally by Jim Blandy <jimb@red-bean.com> */ | |
19 | ||
20 | #include "libguile.h" | |
21 | #include "libguile/gh.h" | |
22 | ||
23 | #include <assert.h> | |
24 | #include <string.h> | |
25 | ||
26 | static int | |
27 | string_equal (SCM str, char *lit) | |
28 | { | |
29 | int len = strlen (lit); | |
30 | int result; | |
31 | ||
ad6dec05 MV |
32 | result = ((scm_i_string_length (str) == len) |
33 | && (!memcmp (scm_i_string_chars (str), lit, len))); | |
51a186f7 RB |
34 | scm_remember_upto_here_1 (str); |
35 | return result; | |
36 | } | |
37 | ||
38 | static void | |
39 | test_gh_set_substr () | |
40 | { | |
41 | SCM string; | |
42 | ||
43 | string = gh_str02scm ("Free, darnit!"); | |
44 | assert (gh_string_p (string)); | |
45 | ||
46 | gh_set_substr ("dammit", string, 6, 6); | |
47 | assert (string_equal (string, "Free, dammit!")); | |
48 | ||
49 | /* Make sure that we can use the string itself as a source. | |
50 | ||
51 | I guess this behavior isn't really visible, since the GH API | |
52 | doesn't provide any direct access to the string contents. But I | |
53 | think it should, eventually. You can't write efficient string | |
54 | code if you have to copy the string just to look at it. */ | |
55 | ||
56 | /* Copy a substring to an overlapping region to its right. */ | |
ad6dec05 | 57 | gh_set_substr (scm_i_string_chars (string), string, 4, 6); |
51a186f7 RB |
58 | assert (string_equal (string, "FreeFree, it!")); |
59 | ||
60 | string = gh_str02scm ("Free, darnit!"); | |
61 | assert (gh_string_p (string)); | |
62 | ||
63 | /* Copy a substring to an overlapping region to its left. */ | |
ad6dec05 | 64 | gh_set_substr (scm_i_string_chars (string) + 6, string, 2, 6); |
51a186f7 RB |
65 | assert (string_equal (string, "Frdarnitrnit!")); |
66 | } | |
67 | ||
68 | int | |
69 | main (int argc, char *argv[]) | |
70 | { | |
71 | scm_init_guile (); | |
72 | test_gh_set_substr (); | |
73 | return 0; | |
74 | } |