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Simplify width-checking code

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With suggestions from helpful #rust folk. Thank you!
This commit is contained in:
Ben S 2014-11-26 08:23:17 +00:00
parent c52625b1ce
commit c217dce73d
1 changed files with 13 additions and 5 deletions
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18
src/exa.rs
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@ -114,11 +114,18 @@ fn lines_view(files: Vec<File>) {
fn grid_view(across: bool, console_width: uint, files: Vec<File>) {
// Check if all the files can be displayed on one line, and do
// that if possible.
let count = files.len();
let spacing = 2;
if files.iter().map(|ref f| f.name.len() + spacing).sum() + (count - 1) * spacing <= console_width {
let names: Vec<String> = files.iter().map(|ref f| f.file_name().to_string()).collect();
// that if possible. The width has to take into account the
// two-space separator between file names for every file except
// the last one (because it's a separator)
let width = files.iter()
.map(|f| f.name.len() + 2)
.sum() - 2;
if width <= console_width {
let names: Vec<String> = files.iter()
.map(|f| f.file_name().to_string())
.collect();
println!("{}", names.connect(" "));
return;
}
@ -126,6 +133,7 @@ fn grid_view(across: bool, console_width: uint, files: Vec<File>) {
// Otherwise, contort them into a grid.
let max_column_length = files.iter().map(|f| f.file_name_width()).max().unwrap_or(0);
let num_columns = (console_width + 1) / (max_column_length + 1);
let count = files.len();
let mut num_rows = count / num_columns;
if count % num_columns != 0 {