37 lines
1.0 KiB
Rust
37 lines
1.0 KiB
Rust
//! The `cat` sub-command.
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//!
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//! Read a sequence of Cretonne IL files and print them again to stdout. This has the effect of
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//! normalizing formatting and removing comments.
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use std::io;
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use CommandResult;
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use utils::read_to_string;
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use cton_reader::parse_functions;
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use cretonne::write::write_function;
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pub fn run(files: Vec<String>) -> CommandResult {
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for (i, f) in files.into_iter().enumerate() {
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if i != 0 {
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println!("");
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}
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try!(cat_one(f))
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}
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Ok(())
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}
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fn cat_one(filename: String) -> CommandResult {
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let buffer = try!(read_to_string(&filename).map_err(|e| format!("{}: {}", filename, e)));
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let items = try!(parse_functions(&buffer).map_err(|e| format!("{}: {}", filename, e)));
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for (idx, func) in items.into_iter().enumerate() {
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if idx != 0 {
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println!("");
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}
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let stdout = io::stdout();
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let mut handle = stdout.lock();
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try!(write_function(&mut handle, &func).map_err(|e| format!("{}: {}", filename, e)));
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}
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Ok(())
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}
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