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74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
/* Copyright (C) 1999,2000,2001,2003 Free Software Foundation, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* some bits originally by Jim Blandy <jimb@red-bean.com> */
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#include "libguile.h"
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#include "libguile/gh.h"
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#include <assert.h>
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#include <string.h>
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static int
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string_equal (SCM str, char *lit)
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{
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int len = strlen (lit);
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int result;
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result = ((scm_i_string_length (str) == len)
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&& (!memcmp (scm_i_string_chars (str), lit, len)));
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scm_remember_upto_here_1 (str);
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return result;
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}
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static void
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test_gh_set_substr ()
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{
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SCM string;
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string = gh_str02scm ("Free, darnit!");
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assert (gh_string_p (string));
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gh_set_substr ("dammit", string, 6, 6);
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assert (string_equal (string, "Free, dammit!"));
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/* Make sure that we can use the string itself as a source.
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I guess this behavior isn't really visible, since the GH API
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doesn't provide any direct access to the string contents. But I
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think it should, eventually. You can't write efficient string
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code if you have to copy the string just to look at it. */
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/* Copy a substring to an overlapping region to its right. */
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gh_set_substr (scm_i_string_chars (string), string, 4, 6);
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assert (string_equal (string, "FreeFree, it!"));
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string = gh_str02scm ("Free, darnit!");
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assert (gh_string_p (string));
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/* Copy a substring to an overlapping region to its left. */
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gh_set_substr (scm_i_string_chars (string) + 6, string, 2, 6);
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assert (string_equal (string, "Frdarnitrnit!"));
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}
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int
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main (int argc, char *argv[])
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{
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scm_init_guile ();
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test_gh_set_substr ();
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return 0;
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}
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