jiff/error/tz/
system.rs

1#[cfg(not(feature = "tz-system"))]
2pub(crate) use self::disabled::*;
3#[cfg(feature = "tz-system")]
4pub(crate) use self::enabled::*;
5
6#[cfg(not(feature = "tz-system"))]
7mod disabled {
8    #[derive(Clone, Debug)]
9    pub(crate) enum Error {}
10
11    impl core::fmt::Display for Error {
12        fn fmt(&self, _: &mut core::fmt::Formatter) -> core::fmt::Result {
13            unreachable!()
14        }
15    }
16}
17
18#[cfg(feature = "tz-system")]
19mod enabled {
20    use crate::error;
21
22    #[derive(Clone, Debug)]
23    pub(crate) enum Error {
24        FailedEnvTz,
25        FailedEnvTzAsTzif,
26        FailedPosixTzAndUtf8,
27        FailedSystemTimeZone,
28        FailedUnnamedTzifInvalid,
29        FailedUnnamedTzifRead,
30        #[cfg(windows)]
31        WindowsMissingIanaMapping,
32        #[cfg(windows)]
33        WindowsTimeZoneKeyName,
34        #[cfg(windows)]
35        WindowsUtf16DecodeInvalid,
36        #[cfg(windows)]
37        WindowsUtf16DecodeNul,
38    }
39
40    impl From<Error> for error::Error {
41        #[cold]
42        #[inline(never)]
43        fn from(err: Error) -> error::Error {
44            error::ErrorKind::TzSystem(err).into()
45        }
46    }
47
48    impl error::IntoError for Error {
49        fn into_error(self) -> error::Error {
50            self.into()
51        }
52    }
53
54    impl core::fmt::Display for Error {
55        fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
56            use self::Error::*;
57
58            match *self {
59                FailedEnvTz => f.write_str(
60                    "`TZ` environment variable set, but failed to read value",
61                ),
62                FailedEnvTzAsTzif => f.write_str(
63                    "failed to read `TZ` environment variable value \
64                     as a TZif file after attempting (and failing) a tzdb \
65                     lookup for that same value",
66                ),
67                FailedPosixTzAndUtf8 => f.write_str(
68                    "failed to parse `TZ` environment variable as either \
69                     a POSIX time zone transition string or as valid UTF-8",
70                ),
71                FailedSystemTimeZone => {
72                    f.write_str("failed to find system time zone")
73                }
74                FailedUnnamedTzifInvalid => f.write_str(
75                    "found invalid TZif data in unnamed time zone file",
76                ),
77                FailedUnnamedTzifRead => f.write_str(
78                    "failed to read TZif data from unnamed time zone file",
79                ),
80                #[cfg(windows)]
81                WindowsMissingIanaMapping => f.write_str(
82                    "found Windows time zone name, \
83                     but could not find a mapping for it to an \
84                     IANA time zone name",
85                ),
86                #[cfg(windows)]
87                WindowsTimeZoneKeyName => f.write_str(
88                    "could not get `TimeZoneKeyName` from \
89                     winapi `DYNAMIC_TIME_ZONE_INFORMATION`",
90                ),
91                #[cfg(windows)]
92                WindowsUtf16DecodeInvalid => f.write_str(
93                    "failed to convert `u16` slice to UTF-8 \
94                     (invalid UTF-16)",
95                ),
96                #[cfg(windows)]
97                WindowsUtf16DecodeNul => f.write_str(
98                    "failed to convert `u16` slice to UTF-8 \
99                     (no NUL terminator found)",
100                ),
101            }
102        }
103    }
104}
jiff/error/tz/system.rs

jiff/error/tz/
system.rs
