nushell/crates/nu-command/src/strings/mod.rs

43 lines
1.3 KiB
Rust

mod char_;
mod detect_columns;
mod encode_decode;
mod format;
mod parse;
mod size;
mod split;
mod str_;
pub use char_::Char;
pub use detect_columns::*;
pub use encode_decode::*;
pub use format::*;
pub use parse::*;
pub use size::Size;
pub use split::*;
pub use str_::*;
use nu_protocol::{ast::Call, ShellError};
// For handling the grapheme_cluster related flags on some commands.
// This ensures the error messages are consistent.
pub fn grapheme_flags(call: &Call) -> Result<bool, ShellError> {
let g_flag = call.has_flag("grapheme-clusters");
// Check for the other flags and produce errors if they exist.
// Note that Nushell already prevents nonexistant flags from being used with commands,
// so this function can be reused for both the --utf-8-bytes commands and the --code-points commands.
if g_flag && call.has_flag("utf-8-bytes") {
Err(ShellError::IncompatibleParametersSingle(
"Incompatible flags: --grapheme-clusters (-g) and --utf-8-bytes (-b)".to_string(),
call.head,
))?
}
if g_flag && call.has_flag("code-points") {
Err(ShellError::IncompatibleParametersSingle(
"Incompatible flags: --grapheme-clusters (-g) and --utf-8-bytes (-b)".to_string(),
call.head,
))?
}
// Grapheme cluster usage is decided by the non-default -g flag
Ok(g_flag)
}