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2aa62f2b | 1 | /*-\r |
2 | * Copyright (c)2001 Citrus Project,\r | |
3 | * All rights reserved.\r | |
4 | *\r | |
5 | * Redistribution and use in source and binary forms, with or without\r | |
6 | * modification, are permitted provided that the following conditions\r | |
7 | * are met:\r | |
8 | * 1. Redistributions of source code must retain the above copyright\r | |
9 | * notice, this list of conditions and the following disclaimer.\r | |
10 | * 2. Redistributions in binary form must reproduce the above copyright\r | |
11 | * notice, this list of conditions and the following disclaimer in the\r | |
12 | * documentation and/or other materials provided with the distribution.\r | |
13 | *\r | |
14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND\r | |
15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r | |
16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r | |
17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE\r | |
18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r | |
19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r | |
20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r | |
21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r | |
22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r | |
23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r | |
24 | * SUCH DAMAGE.\r | |
25 | *\r | |
26 | * $Citrus$\r | |
27 | \r | |
28 | NetBSD: fgetwc.c,v 1.5 2006/07/03 17:06:36 tnozaki Exp\r | |
29 | */\r | |
30 | #include <LibConfig.h>\r | |
31 | #include <sys/EfiCdefs.h>\r | |
32 | \r | |
33 | #include <assert.h>\r | |
34 | #include <errno.h>\r | |
35 | #include <stdio.h>\r | |
36 | #include <wchar.h>\r | |
37 | #include "reentrant.h"\r | |
38 | #include "local.h"\r | |
39 | \r | |
40 | wint_t\r | |
41 | __fgetwc_unlock(FILE *fp)\r | |
42 | {\r | |
43 | struct wchar_io_data *wcio;\r | |
44 | mbstate_t *st;\r | |
45 | wchar_t wc;\r | |
46 | size_t size;\r | |
47 | \r | |
48 | _DIAGASSERT(fp != NULL);\r | |
49 | \r | |
50 | _SET_ORIENTATION(fp, 1);\r | |
51 | wcio = WCIO_GET(fp);\r | |
52 | if (wcio == 0) {\r | |
53 | errno = ENOMEM;\r | |
54 | return WEOF;\r | |
55 | }\r | |
56 | \r | |
57 | /* if there're ungetwc'ed wchars, use them */\r | |
58 | if (wcio->wcio_ungetwc_inbuf) {\r | |
59 | wc = wcio->wcio_ungetwc_buf[--wcio->wcio_ungetwc_inbuf];\r | |
60 | \r | |
61 | return wc;\r | |
62 | }\r | |
63 | \r | |
64 | st = &wcio->wcio_mbstate_in;\r | |
65 | \r | |
66 | do {\r | |
67 | char c;\r | |
68 | int ch = __sgetc(fp);\r | |
69 | \r | |
70 | if (ch == EOF) {\r | |
71 | return WEOF;\r | |
72 | }\r | |
73 | \r | |
74 | c = (char)ch;\r | |
75 | size = mbrtowc(&wc, &c, 1, st);\r | |
76 | if (size == (size_t)-1) {\r | |
77 | errno = EILSEQ;\r | |
78 | fp->_flags |= __SERR;\r | |
79 | return WEOF;\r | |
80 | }\r | |
81 | } while (size == (size_t)-2);\r | |
82 | \r | |
83 | _DIAGASSERT(size == 1);\r | |
84 | \r | |
85 | return wc;\r | |
86 | }\r | |
87 | \r | |
88 | wint_t\r | |
89 | fgetwc(FILE *fp)\r | |
90 | {\r | |
91 | wint_t r;\r | |
92 | \r | |
93 | _DIAGASSERT(fp != NULL);\r | |
94 | \r | |
95 | FLOCKFILE(fp);\r | |
96 | r = __fgetwc_unlock(fp);\r | |
97 | FUNLOCKFILE(fp);\r | |
98 | \r | |
99 | return (r);\r | |
100 | }\r |