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f77b6ca3 | 1 | /* Implementation of the LINK intrinsic. |
36ae8a61 | 2 | Copyright (C) 2005, 2007 Free Software Foundation, Inc. |
f77b6ca3 FXC |
3 | Contributed by François-Xavier Coudert <coudert@clipper.ens.fr> |
4 | ||
5 | This file is part of the GNU Fortran 95 runtime library (libgfortran). | |
6 | ||
7 | Libgfortran is free software; you can redistribute it and/or | |
8 | modify it under the terms of the GNU General Public | |
9 | License as published by the Free Software Foundation; either | |
10 | version 2 of the License, or (at your option) any later version. | |
11 | ||
12 | In addition to the permissions in the GNU General Public License, the | |
13 | Free Software Foundation gives you unlimited permission to link the | |
14 | compiled version of this file into combinations with other programs, | |
15 | and to distribute those combinations without any restriction coming | |
16 | from the use of this file. (The General Public License restrictions | |
17 | do apply in other respects; for example, they cover modification of | |
18 | the file, and distribution when not linked into a combine | |
19 | executable.) | |
20 | ||
21 | Libgfortran is distributed in the hope that it will be useful, | |
22 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | GNU General Public License for more details. | |
25 | ||
26 | You should have received a copy of the GNU General Public | |
27 | License along with libgfortran; see the file COPYING. If not, | |
fe2ae685 KC |
28 | write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
29 | Boston, MA 02110-1301, USA. */ | |
f77b6ca3 | 30 | |
f77b6ca3 FXC |
31 | #include "libgfortran.h" |
32 | ||
33 | #include <errno.h> | |
deeab820 | 34 | #include <string.h> |
36ae8a61 | 35 | |
f77b6ca3 FXC |
36 | #ifdef HAVE_UNISTD_H |
37 | #include <unistd.h> | |
38 | #endif | |
39 | ||
40 | /* SUBROUTINE LINK(PATH1, PATH2, STATUS) | |
41 | CHARACTER(len=*), INTENT(IN) :: PATH1, PATH2 | |
42 | INTEGER, INTENT(OUT), OPTIONAL :: STATUS */ | |
43 | ||
44 | #ifdef HAVE_LINK | |
45 | extern void link_i4_sub (char *, char *, GFC_INTEGER_4 *, gfc_charlen_type, | |
46 | gfc_charlen_type); | |
47 | iexport_proto(link_i4_sub); | |
48 | ||
49 | void | |
50 | link_i4_sub (char *path1, char *path2, GFC_INTEGER_4 *status, | |
51 | gfc_charlen_type path1_len, gfc_charlen_type path2_len) | |
52 | { | |
53 | int val; | |
54 | char *str1, *str2; | |
55 | ||
56 | /* Trim trailing spaces from paths. */ | |
57 | while (path1_len > 0 && path1[path1_len - 1] == ' ') | |
58 | path1_len--; | |
59 | while (path2_len > 0 && path2[path2_len - 1] == ' ') | |
60 | path2_len--; | |
61 | ||
62 | /* Make a null terminated copy of the strings. */ | |
63 | str1 = gfc_alloca (path1_len + 1); | |
64 | memcpy (str1, path1, path1_len); | |
deeab820 | 65 | str1[path1_len] = '\0'; |
f77b6ca3 FXC |
66 | |
67 | str2 = gfc_alloca (path2_len + 1); | |
68 | memcpy (str2, path2, path2_len); | |
deeab820 | 69 | str2[path2_len] = '\0'; |
f77b6ca3 FXC |
70 | |
71 | val = link (str1, str2); | |
72 | ||
deeab820 | 73 | if (status != NULL) |
f77b6ca3 FXC |
74 | *status = (val == 0) ? 0 : errno; |
75 | } | |
76 | iexport(link_i4_sub); | |
77 | ||
78 | extern void link_i8_sub (char *, char *, GFC_INTEGER_8 *, gfc_charlen_type, | |
79 | gfc_charlen_type); | |
80 | iexport_proto(link_i8_sub); | |
81 | ||
82 | void | |
83 | link_i8_sub (char *path1, char *path2, GFC_INTEGER_8 *status, | |
84 | gfc_charlen_type path1_len, gfc_charlen_type path2_len) | |
85 | { | |
86 | int val; | |
87 | char *str1, *str2; | |
88 | ||
89 | /* Trim trailing spaces from paths. */ | |
90 | while (path1_len > 0 && path1[path1_len - 1] == ' ') | |
91 | path1_len--; | |
92 | while (path2_len > 0 && path2[path2_len - 1] == ' ') | |
93 | path2_len--; | |
94 | ||
95 | /* Make a null terminated copy of the strings. */ | |
96 | str1 = gfc_alloca (path1_len + 1); | |
97 | memcpy (str1, path1, path1_len); | |
deeab820 | 98 | str1[path1_len] = '\0'; |
f77b6ca3 FXC |
99 | |
100 | str2 = gfc_alloca (path2_len + 1); | |
101 | memcpy (str2, path2, path2_len); | |
deeab820 | 102 | str2[path2_len] = '\0'; |
f77b6ca3 FXC |
103 | |
104 | val = link (str1, str2); | |
105 | ||
deeab820 | 106 | if (status != NULL) |
f77b6ca3 FXC |
107 | *status = (val == 0) ? 0 : errno; |
108 | } | |
109 | iexport(link_i8_sub); | |
110 | ||
111 | extern GFC_INTEGER_4 link_i4 (char *, char *, gfc_charlen_type, | |
112 | gfc_charlen_type); | |
113 | export_proto(link_i4); | |
114 | ||
115 | GFC_INTEGER_4 | |
116 | link_i4 (char *path1, char *path2, gfc_charlen_type path1_len, | |
117 | gfc_charlen_type path2_len) | |
118 | { | |
119 | GFC_INTEGER_4 val; | |
120 | link_i4_sub (path1, path2, &val, path1_len, path2_len); | |
121 | return val; | |
122 | } | |
123 | ||
124 | extern GFC_INTEGER_8 link_i8 (char *, char *, gfc_charlen_type, | |
125 | gfc_charlen_type); | |
126 | export_proto(link_i8); | |
127 | ||
128 | GFC_INTEGER_8 | |
129 | link_i8 (char *path1, char *path2, gfc_charlen_type path1_len, | |
130 | gfc_charlen_type path2_len) | |
131 | { | |
132 | GFC_INTEGER_8 val; | |
133 | link_i8_sub (path1, path2, &val, path1_len, path2_len); | |
134 | return val; | |
135 | } | |
136 | #endif |