56 lines
1.9 KiB
Rust
56 lines
1.9 KiB
Rust
use crate::utils::split_newlines;
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use evalexpr::{eval, Value};
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use kakplugin::{get_selections, open_command_fifo, set_selections, KakError, Selection};
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use std::{borrow::Cow, io::Write};
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#[derive(clap::StructOpt, Debug)]
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pub struct Options {
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#[clap(index = 1, help = "Pad with this char", default_value = "0")]
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fill: char,
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#[clap(short, long, help = "Pad on the right instead of the left")]
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right: bool,
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}
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pub fn pad(options: &Options) -> Result<String, KakError> {
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let selections = get_selections(None)?;
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let selections_trailing_split: Vec<(&str, &str, &str)> = selections
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.iter()
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// We don't want leading or trailing newlines to count
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.map(|s| split_newlines(s))
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.collect();
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// The max length of selections with newlines split off
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let max_len = selections_trailing_split
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.iter()
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.map(|(_, s, _)| s.len())
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.max()
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.ok_or(KakError::CustomStatic("No selections"))?;
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let mut num_padded: usize = 0;
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let num_total = selections.len();
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set_selections(selections_trailing_split.iter().zip(selections.iter()).map(
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|((leading_newlines, s, trailing_newlines), orig_s)| match max_len.checked_sub(s.len()) {
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Some(0) | None => Cow::Borrowed(orig_s.as_str()),
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Some(len) => {
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num_padded += 1;
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let fill = options.fill.to_string().repeat(len);
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let mut ret = leading_newlines.to_string();
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if options.right {
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ret.push_str(s);
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ret.push_str(&fill);
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} else {
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ret.push_str(&fill);
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ret.push_str(s);
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}
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ret.push_str(trailing_newlines);
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Cow::Owned(ret)
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}
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},
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))?;
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Ok(format!(
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"Padded {num_padded} selections ({num_total} total)",
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))
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}
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