diff options
Diffstat (limited to 'vendor/clap/src/output/textwrap/wrap_algorithms.rs')
-rw-r--r-- | vendor/clap/src/output/textwrap/wrap_algorithms.rs | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/vendor/clap/src/output/textwrap/wrap_algorithms.rs b/vendor/clap/src/output/textwrap/wrap_algorithms.rs new file mode 100644 index 000000000..019cc04ff --- /dev/null +++ b/vendor/clap/src/output/textwrap/wrap_algorithms.rs @@ -0,0 +1,44 @@ +use super::core::display_width; + +#[derive(Debug)] +pub(crate) struct LineWrapper { + line_width: usize, + hard_width: usize, +} + +impl LineWrapper { + pub(crate) fn new(hard_width: usize) -> Self { + Self { + line_width: 0, + hard_width, + } + } + + pub(crate) fn reset(&mut self) { + self.line_width = 0; + } + + pub(crate) fn wrap<'w>(&mut self, mut words: Vec<&'w str>) -> Vec<&'w str> { + let mut i = 0; + while i < words.len() { + let word = &words[i]; + let trimmed = word.trim_end(); + let word_width = display_width(trimmed); + let trimmed_delta = word.len() - trimmed.len(); + if i != 0 && self.hard_width < self.line_width + word_width { + if 0 < i { + let last = i - 1; + let trimmed = words[last].trim_end(); + words[last] = trimmed; + } + words.insert(i, "\n"); + i += 1; + self.reset(); + } + self.line_width += word_width + trimmed_delta; + + i += 1; + } + words + } +} |