shellexpand is a single dependency library which allows one to perform shell-like expansions in strings, that is, to expand variables like $A or ${B} into their values inside some context and to expand ~ in the beginning of a string into the home directory (again, inside some context).
This crate provides generic functions which accept arbitrary contexts as well as default, system-based functions which perform expansions using the system-wide context (represented by functions from std::env module and dirs crate).
expanduser: Tilde substitution only. Supports ~user which this crate currently does not (although we hope to).envsubst: Does not do offer tildeexpansion. Only supports certain concrete types (eg HashMap for variable map).expand_str: Uses %..% syntax. Does not offer tilde expansion. Variable lookups can only be infallible.tilde_expand: Only does tilde expansion, on bytes ([u8]).Just add a dependency in your Cargo.toml:
[dependencies] shellexpand = "2.1"
See the crate documentation (a link is present in the beginning of this readme) for more information and examples.
Minor changes:
shellexpand on crates.io.cargo fix.shellexpand-fork on crates.io.dirs-next instead of the obsolete dirs as the underlying dependency used to resolve the home directory${ANSWER:-42})dyn for trait objects to fix deprecation warningsource() instead of cause() in the Error implementation, and therefore added a 'static bound for the generic error parameter Edirs dependency to 2.0.std::env::home_dir to the dirs::home_dir functionhome_dir argument type for tilde expansion functions to FnOnce instead FnMutLookupError::name field name to var_nameThis program is licensed under either of
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Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.