Initial vendor packages

Signed-off-by: Valentin Popov <valentin@popov.link>

4 files changed, 435 insertions, 0 deletions

diff --git a/vendor/clap_builder/src/output/textwrap/core.rs b/vendor/clap_builder/src/output/textwrap/core.rs
new file mode 100644
index 0000000..2f6004c
--- /dev/null
+++ b/vendor/clap_builder/src/output/textwrap/core.rs
@@ -0,0 +1,158 @@
+/// Compute the display width of `text`
+///
+/// # Examples
+///
+/// **Note:** When the `unicode` Cargo feature is disabled, all characters are presumed to take up
+/// 1 width.  With the feature enabled, function will correctly deal with [combining characters] in
+/// their decomposed form (see [Unicode equivalence]).
+///
+/// An example of a decomposed character is “é”, which can be decomposed into: “e” followed by a
+/// combining acute accent: “◌́”.  Without the `unicode` Cargo feature, every `char` has a width of
+/// 1. This includes the combining accent:
+///
+/// ## Emojis and CJK Characters
+///
+/// Characters such as emojis and [CJK characters] used in the
+/// Chinese, Japanese, and Korean languages are seen as double-width,
+/// even if the `unicode-width` feature is disabled:
+///
+/// # Limitations
+///
+/// The displayed width of a string cannot always be computed from the
+/// string alone. This is because the width depends on the rendering
+/// engine used. This is particularly visible with [emoji modifier
+/// sequences] where a base emoji is modified with, e.g., skin tone or
+/// hair color modifiers. It is up to the rendering engine to detect
+/// this and to produce a suitable emoji.
+///
+/// A simple example is “❤️”, which consists of “❤” (U+2764: Black
+/// Heart Symbol) followed by U+FE0F (Variation Selector-16). By
+/// itself, “❤” is a black heart, but if you follow it with the
+/// variant selector, you may get a wider red heart.
+///
+/// A more complex example would be “👨‍🦰” which should depict a man
+/// with red hair. Here the computed width is too large — and the
+/// width differs depending on the use of the `unicode-width` feature:
+///
+/// This happens because the grapheme consists of three code points:
+/// “👨” (U+1F468: Man), Zero Width Joiner (U+200D), and “🦰”
+/// (U+1F9B0: Red Hair). You can see them above in the test. With
+/// `unicode-width` enabled, the ZWJ is correctly seen as having zero
+/// width, without it is counted as a double-width character.
+///
+/// ## Terminal Support
+///
+/// Modern browsers typically do a great job at combining characters
+/// as shown above, but terminals often struggle more. As an example,
+/// Gnome Terminal version 3.38.1, shows “❤️” as a big red heart, but
+/// shows "👨‍🦰" as “👨🦰”.
+///
+/// [combining characters]: https://en.wikipedia.org/wiki/Combining_character
+/// [Unicode equivalence]: https://en.wikipedia.org/wiki/Unicode_equivalence
+/// [CJK characters]: https://en.wikipedia.org/wiki/CJK_characters
+/// [emoji modifier sequences]: https://unicode.org/emoji/charts/full-emoji-modifiers.html
+#[inline(never)]
+pub(crate) fn display_width(text: &str) -> usize {
+    let mut width = 0;
+
+    let mut control_sequence = false;
+    let control_terminate: char = 'm';
+
+    for ch in text.chars() {
+        if ch.is_ascii_control() {
+            control_sequence = true;
+        } else if control_sequence && ch == control_terminate {
+            control_sequence = false;
+            continue;
+        }
+
+        if !control_sequence {
+            width += ch_width(ch);
+        }
+    }
+    width
+}
+
+#[cfg(feature = "unicode")]
+fn ch_width(ch: char) -> usize {
+    unicode_width::UnicodeWidthChar::width(ch).unwrap_or(0)
+}
+
+#[cfg(not(feature = "unicode"))]
+fn ch_width(_: char) -> usize {
+    1
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[cfg(feature = "unicode")]
+    use unicode_width::UnicodeWidthChar;
+
+    #[test]
+    fn emojis_have_correct_width() {
+        use unic_emoji_char::is_emoji;
+
+        // Emojis in the Basic Latin (ASCII) and Latin-1 Supplement
+        // blocks all have a width of 1 column. This includes
+        // characters such as '#' and '©'.
+        for ch in '\u{1}'..'\u{FF}' {
+            if is_emoji(ch) {
+                let desc = format!("{:?} U+{:04X}", ch, ch as u32);
+
+                #[cfg(feature = "unicode")]
+                assert_eq!(ch.width().unwrap(), 1, "char: {desc}");
+
+                #[cfg(not(feature = "unicode"))]
+                assert_eq!(ch_width(ch), 1, "char: {desc}");
+            }
+        }
+
+        // Emojis in the remaining blocks of the Basic Multilingual
+        // Plane (BMP), in the Supplementary Multilingual Plane (SMP),
+        // and in the Supplementary Ideographic Plane (SIP), are all 1
+        // or 2 columns wide when unicode-width is used, and always 2
+        // columns wide otherwise. This includes all of our favorite
+        // emojis such as 😊.
+        for ch in '\u{FF}'..'\u{2FFFF}' {
+            if is_emoji(ch) {
+                let desc = format!("{:?} U+{:04X}", ch, ch as u32);
+
+                #[cfg(feature = "unicode")]
+                assert!(ch.width().unwrap() <= 2, "char: {desc}");
+
+                #[cfg(not(feature = "unicode"))]
+                assert_eq!(ch_width(ch), 1, "char: {desc}");
+            }
+        }
+
+        // The remaining planes contain almost no assigned code points
+        // and thus also no emojis.
+    }
+
+    #[test]
+    #[cfg(feature = "unicode")]
+    fn display_width_works() {
+        assert_eq!("Café Plain".len(), 11); // “é” is two bytes
+        assert_eq!(display_width("Café Plain"), 10);
+    }
+
+    #[test]
+    #[cfg(feature = "unicode")]
+    fn display_width_narrow_emojis() {
+        assert_eq!(display_width("⁉"), 1);
+    }
+
+    #[test]
+    #[cfg(feature = "unicode")]
+    fn display_width_narrow_emojis_variant_selector() {
+        assert_eq!(display_width("⁉\u{fe0f}"), 1);
+    }
+
+    #[test]
+    #[cfg(feature = "unicode")]
+    fn display_width_emojis() {
+        assert_eq!(display_width("😂😭🥺🤣✨😍🙏🥰😊🔥"), 20);
+    }
+}
diff --git a/vendor/clap_builder/src/output/textwrap/mod.rs b/vendor/clap_builder/src/output/textwrap/mod.rs
new file mode 100644
index 0000000..fe8139f
--- /dev/null
+++ b/vendor/clap_builder/src/output/textwrap/mod.rs
@@ -0,0 +1,122 @@
+//! Fork of `textwrap` crate
+//!
+//! Benefits of forking:
+//! - Pull in only what we need rather than relying on the compiler to remove what we don't need
+//! - `LineWrapper` is able to incrementally wrap which will help with `StyledStr
+
+pub(crate) mod core;
+#[cfg(feature = "wrap_help")]
+pub(crate) mod word_separators;
+#[cfg(feature = "wrap_help")]
+pub(crate) mod wrap_algorithms;
+
+#[cfg(feature = "wrap_help")]
+pub(crate) fn wrap(content: &str, hard_width: usize) -> String {
+    let mut wrapper = wrap_algorithms::LineWrapper::new(hard_width);
+    let mut total = Vec::new();
+    for line in content.split_inclusive('\n') {
+        wrapper.reset();
+        let line = word_separators::find_words_ascii_space(line).collect::<Vec<_>>();
+        total.extend(wrapper.wrap(line));
+    }
+    total.join("")
+}
+
+#[cfg(not(feature = "wrap_help"))]
+pub(crate) fn wrap(content: &str, _hard_width: usize) -> String {
+    content.to_owned()
+}
+
+#[cfg(test)]
+#[cfg(feature = "wrap_help")]
+mod test {
+    /// Compatibility shim to keep textwrap's tests
+    fn wrap(content: &str, hard_width: usize) -> Vec<String> {
+        super::wrap(content, hard_width)
+            .trim_end()
+            .split('\n')
+            .map(|s| s.to_owned())
+            .collect::<Vec<_>>()
+    }
+
+    #[test]
+    fn no_wrap() {
+        assert_eq!(wrap("foo", 10), vec!["foo"]);
+    }
+
+    #[test]
+    fn wrap_simple() {
+        assert_eq!(wrap("foo bar baz", 5), vec!["foo", "bar", "baz"]);
+    }
+
+    #[test]
+    fn to_be_or_not() {
+        assert_eq!(
+            wrap("To be, or not to be, that is the question.", 10),
+            vec!["To be, or", "not to be,", "that is", "the", "question."]
+        );
+    }
+
+    #[test]
+    fn multiple_words_on_first_line() {
+        assert_eq!(wrap("foo bar baz", 10), vec!["foo bar", "baz"]);
+    }
+
+    #[test]
+    fn long_word() {
+        assert_eq!(wrap("foo", 0), vec!["foo"]);
+    }
+
+    #[test]
+    fn long_words() {
+        assert_eq!(wrap("foo bar", 0), vec!["foo", "bar"]);
+    }
+
+    #[test]
+    fn max_width() {
+        assert_eq!(wrap("foo bar", usize::MAX), vec!["foo bar"]);
+
+        let text = "Hello there! This is some English text. \
+                    It should not be wrapped given the extents below.";
+        assert_eq!(wrap(text, usize::MAX), vec![text]);
+    }
+
+    #[test]
+    fn leading_whitespace() {
+        assert_eq!(wrap("  foo bar", 6), vec!["  foo", "  bar"]);
+    }
+
+    #[test]
+    fn leading_whitespace_empty_first_line() {
+        // If there is no space for the first word, the first line
+        // will be empty. This is because the string is split into
+        // words like [" ", "foobar ", "baz"], which puts "foobar " on
+        // the second line. We never output trailing whitespace
+        assert_eq!(wrap(" foobar baz", 6), vec!["", " foobar", " baz"]);
+    }
+
+    #[test]
+    fn trailing_whitespace() {
+        // Whitespace is only significant inside a line. After a line
+        // gets too long and is broken, the first word starts in
+        // column zero and is not indented.
+        assert_eq!(wrap("foo     bar     baz  ", 5), vec!["foo", "bar", "baz"]);
+    }
+
+    #[test]
+    fn issue_99() {
+        // We did not reset the in_whitespace flag correctly and did
+        // not handle single-character words after a line break.
+        assert_eq!(
+            wrap("aaabbbccc x yyyzzzwww", 9),
+            vec!["aaabbbccc", "x", "yyyzzzwww"]
+        );
+    }
+
+    #[test]
+    fn issue_129() {
+        // The dash is an em-dash which takes up four bytes. We used
+        // to panic since we tried to index into the character.
+        assert_eq!(wrap("x – x", 1), vec!["x", "–", "x"]);
+    }
+}
diff --git a/vendor/clap_builder/src/output/textwrap/word_separators.rs b/vendor/clap_builder/src/output/textwrap/word_separators.rs
new file mode 100644
index 0000000..cb8250b
--- /dev/null
+++ b/vendor/clap_builder/src/output/textwrap/word_separators.rs
@@ -0,0 +1,92 @@
+pub(crate) fn find_words_ascii_space(line: &str) -> impl Iterator<Item = &'_ str> + '_ {
+    let mut start = 0;
+    let mut in_whitespace = false;
+    let mut char_indices = line.char_indices();
+
+    std::iter::from_fn(move || {
+        for (idx, ch) in char_indices.by_ref() {
+            let next_whitespace = ch == ' ';
+            if in_whitespace && !next_whitespace {
+                let word = &line[start..idx];
+                start = idx;
+                in_whitespace = next_whitespace;
+                return Some(word);
+            }
+
+            in_whitespace = next_whitespace;
+        }
+
+        if start < line.len() {
+            let word = &line[start..];
+            start = line.len();
+            return Some(word);
+        }
+
+        None
+    })
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    macro_rules! test_find_words {
+        ($ascii_name:ident,
+         $([ $line:expr, $ascii_words:expr ]),+) => {
+            #[test]
+            fn $ascii_name() {
+                $(
+                    let expected_words: Vec<&str> = $ascii_words.to_vec();
+                    let actual_words = find_words_ascii_space($line)
+                        .collect::<Vec<_>>();
+                    assert_eq!(actual_words, expected_words, "Line: {:?}", $line);
+                )+
+            }
+        };
+    }
+
+    test_find_words!(ascii_space_empty, ["", []]);
+
+    test_find_words!(ascii_single_word, ["foo", ["foo"]]);
+
+    test_find_words!(ascii_two_words, ["foo bar", ["foo ", "bar"]]);
+
+    test_find_words!(
+        ascii_multiple_words,
+        ["foo bar", ["foo ", "bar"]],
+        ["x y z", ["x ", "y ", "z"]]
+    );
+
+    test_find_words!(ascii_only_whitespace, [" ", [" "]], ["    ", ["    "]]);
+
+    test_find_words!(
+        ascii_inter_word_whitespace,
+        ["foo   bar", ["foo   ", "bar"]]
+    );
+
+    test_find_words!(ascii_trailing_whitespace, ["foo   ", ["foo   "]]);
+
+    test_find_words!(ascii_leading_whitespace, ["   foo", ["   ", "foo"]]);
+
+    test_find_words!(
+        ascii_multi_column_char,
+        ["\u{1f920}", ["\u{1f920}"]] // cowboy emoji 🤠
+    );
+
+    test_find_words!(
+        ascii_hyphens,
+        ["foo-bar", ["foo-bar"]],
+        ["foo- bar", ["foo- ", "bar"]],
+        ["foo - bar", ["foo ", "- ", "bar"]],
+        ["foo -bar", ["foo ", "-bar"]]
+    );
+
+    test_find_words!(ascii_newline, ["foo\nbar", ["foo\nbar"]]);
+
+    test_find_words!(ascii_tab, ["foo\tbar", ["foo\tbar"]]);
+
+    test_find_words!(
+        ascii_non_breaking_space,
+        ["foo\u{00A0}bar", ["foo\u{00A0}bar"]]
+    );
+}
diff --git a/vendor/clap_builder/src/output/textwrap/wrap_algorithms.rs b/vendor/clap_builder/src/output/textwrap/wrap_algorithms.rs
new file mode 100644
index 0000000..34b4fd2
--- /dev/null
+++ b/vendor/clap_builder/src/output/textwrap/wrap_algorithms.rs
@@ -0,0 +1,63 @@
+use super::core::display_width;
+
+#[derive(Debug)]
+pub(crate) struct LineWrapper<'w> {
+    hard_width: usize,
+    line_width: usize,
+    carryover: Option<&'w str>,
+}
+
+impl<'w> LineWrapper<'w> {
+    pub(crate) fn new(hard_width: usize) -> Self {
+        Self {
+            hard_width,
+            line_width: 0,
+            carryover: None,
+        }
+    }
+
+    pub(crate) fn reset(&mut self) {
+        self.line_width = 0;
+        self.carryover = None;
+    }
+
+    pub(crate) fn wrap(&mut self, mut words: Vec<&'w str>) -> Vec<&'w str> {
+        if self.carryover.is_none() {
+            if let Some(word) = words.first() {
+                if word.trim().is_empty() {
+                    self.carryover = Some(*word);
+                } else {
+                    self.carryover = Some("");
+                }
+            }
+        }
+
+        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;
+                }
+
+                self.line_width = 0;
+                words.insert(i, "\n");
+                i += 1;
+                if let Some(carryover) = self.carryover {
+                    words.insert(i, carryover);
+                    self.line_width += carryover.len();
+                    i += 1;
+                }
+            }
+            self.line_width += word_width + trimmed_delta;
+
+            i += 1;
+        }
+        words
+    }
+}