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2aa62f2b | 1 | /* $NetBSD: fgetws.c,v 1.2 2006/07/03 17:06:36 tnozaki Exp $ */\r |
2 | \r | |
3 | /*-\r | |
4 | * Copyright (c) 2002 Tim J. Robbins.\r | |
5 | * All rights reserved.\r | |
6 | *\r | |
7 | * Redistribution and use in source and binary forms, with or without\r | |
8 | * modification, are permitted provided that the following conditions\r | |
9 | * are met:\r | |
10 | * 1. Redistributions of source code must retain the above copyright\r | |
11 | * notice, this list of conditions and the following disclaimer.\r | |
12 | * 2. Redistributions in binary form must reproduce the above copyright\r | |
13 | * notice, this list of conditions and the following disclaimer in the\r | |
14 | * documentation and/or other materials provided with the distribution.\r | |
15 | *\r | |
16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND\r | |
17 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r | |
18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r | |
19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE\r | |
20 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r | |
21 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r | |
22 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r | |
23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r | |
24 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r | |
25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r | |
26 | * SUCH DAMAGE.\r | |
27 | *\r | |
28 | * Original version ID:\r | |
29 | * FreeBSD: src/lib/libc/stdio/fgetws.c,v 1.4 2002/09/20 13:25:40 tjr Exp\r | |
30 | *\r | |
31 | */\r | |
32 | #include <LibConfig.h>\r | |
33 | #include <sys/EfiCdefs.h>\r | |
34 | #if defined(LIB_SCCS) && !defined(lint)\r | |
35 | __RCSID("$NetBSD: fgetws.c,v 1.2 2006/07/03 17:06:36 tnozaki Exp $");\r | |
36 | #endif\r | |
37 | \r | |
38 | #include <assert.h>\r | |
39 | #include <errno.h>\r | |
40 | #include <stdio.h>\r | |
41 | #include <wchar.h>\r | |
42 | #include "reentrant.h"\r | |
43 | #include "local.h"\r | |
44 | \r | |
45 | wchar_t *\r | |
46 | fgetws(\r | |
47 | wchar_t * __restrict ws,\r | |
48 | int n,\r | |
49 | FILE * __restrict fp\r | |
50 | )\r | |
51 | {\r | |
52 | wchar_t *wsp;\r | |
53 | wint_t wc;\r | |
54 | \r | |
55 | _DIAGASSERT(fp != NULL);\r | |
56 | _DIAGASSERT(ws != NULL);\r | |
57 | \r | |
58 | FLOCKFILE(fp);\r | |
59 | _SET_ORIENTATION(fp, 1);\r | |
60 | \r | |
61 | if (n <= 0) {\r | |
62 | errno = EINVAL;\r | |
63 | goto error;\r | |
64 | }\r | |
65 | \r | |
66 | wsp = ws;\r | |
67 | while (n-- > 1) {\r | |
68 | wc = __fgetwc_unlock(fp);\r | |
69 | if (__sferror(fp) != 0)\r | |
70 | goto error;\r | |
71 | if (__sfeof(fp) != 0) {\r | |
72 | if (wsp == ws) {\r | |
73 | /* EOF/error, no characters read yet. */\r | |
74 | goto error;\r | |
75 | }\r | |
76 | break;\r | |
77 | }\r | |
78 | *wsp++ = (wchar_t)wc;\r | |
79 | if (wc == L'\n') {\r | |
80 | break;\r | |
81 | }\r | |
82 | }\r | |
83 | \r | |
84 | *wsp++ = L'\0';\r | |
85 | FUNLOCKFILE(fp);\r | |
86 | \r | |
87 | return (ws);\r | |
88 | \r | |
89 | error:\r | |
90 | FUNLOCKFILE(fp);\r | |
91 | return (NULL);\r | |
92 | }\r |