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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:11:38 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:13:23 +0000 |
commit | 20431706a863f92cb37dc512fef6e48d192aaf2c (patch) | |
tree | 2867f13f5fd5437ba628c67d7f87309ccadcd286 /vendor/clap-3.2.20/src/util/str_to_bool.rs | |
parent | Releasing progress-linux version 1.65.0+dfsg1-2~progress7.99u1. (diff) | |
download | rustc-20431706a863f92cb37dc512fef6e48d192aaf2c.tar.xz rustc-20431706a863f92cb37dc512fef6e48d192aaf2c.zip |
Merging upstream version 1.66.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/clap-3.2.20/src/util/str_to_bool.rs')
-rw-r--r-- | vendor/clap-3.2.20/src/util/str_to_bool.rs | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/vendor/clap-3.2.20/src/util/str_to_bool.rs b/vendor/clap-3.2.20/src/util/str_to_bool.rs new file mode 100644 index 000000000..1fbdc7531 --- /dev/null +++ b/vendor/clap-3.2.20/src/util/str_to_bool.rs @@ -0,0 +1,21 @@ +/// True values are `y`, `yes`, `t`, `true`, `on`, and `1`. +pub(crate) const TRUE_LITERALS: [&str; 6] = ["y", "yes", "t", "true", "on", "1"]; + +/// False values are `n`, `no`, `f`, `false`, `off`, and `0`. +pub(crate) const FALSE_LITERALS: [&str; 6] = ["n", "no", "f", "false", "off", "0"]; + +/// Converts a string literal representation of truth to true or false. +/// +/// `false` values are `n`, `no`, `f`, `false`, `off`, and `0` (case insensitive). +/// +/// Any other value will be considered as `true`. +pub(crate) fn str_to_bool(val: impl AsRef<str>) -> Option<bool> { + let pat: &str = &val.as_ref().to_lowercase(); + if TRUE_LITERALS.contains(&pat) { + Some(true) + } else if FALSE_LITERALS.contains(&pat) { + Some(false) + } else { + None + } +} |