Initial vendor packages

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

1 files changed, 356 insertions, 0 deletions

diff --git a/vendor/dialoguer/src/prompts/multi_select.rs b/vendor/dialoguer/src/prompts/multi_select.rs
new file mode 100644
index 0000000..eed55a1
--- /dev/null
+++ b/vendor/dialoguer/src/prompts/multi_select.rs
@@ -0,0 +1,356 @@
+use std::{io, iter::repeat, ops::Rem};
+
+use crate::{
+    theme::{SimpleTheme, TermThemeRenderer, Theme},
+    Paging,
+};
+
+use console::{Key, Term};
+
+/// Renders a multi select prompt.
+///
+/// ## Example usage
+/// ```rust,no_run
+/// # fn test() -> Result<(), Box<dyn std::error::Error>> {
+/// use dialoguer::MultiSelect;
+///
+/// let items = vec!["Option 1", "Option 2"];
+/// let chosen : Vec<usize> = MultiSelect::new()
+///     .items(&items)
+///     .interact()?;
+/// # Ok(())
+/// # }
+/// ```
+pub struct MultiSelect<'a> {
+    defaults: Vec<bool>,
+    items: Vec<String>,
+    prompt: Option<String>,
+    report: bool,
+    clear: bool,
+    max_length: Option<usize>,
+    theme: &'a dyn Theme,
+}
+
+impl Default for MultiSelect<'static> {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl MultiSelect<'static> {
+    /// Creates a multi select prompt.
+    pub fn new() -> Self {
+        Self::with_theme(&SimpleTheme)
+    }
+}
+
+impl MultiSelect<'_> {
+    /// Sets the clear behavior of the menu.
+    ///
+    /// The default is to clear the menu.
+    pub fn clear(&mut self, val: bool) -> &mut Self {
+        self.clear = val;
+        self
+    }
+
+    /// Sets a defaults for the menu.
+    pub fn defaults(&mut self, val: &[bool]) -> &mut Self {
+        self.defaults = val
+            .to_vec()
+            .iter()
+            .copied()
+            .chain(repeat(false))
+            .take(self.items.len())
+            .collect();
+        self
+    }
+
+    /// Sets an optional max length for a page
+    ///
+    /// Max length is disabled by None
+    pub fn max_length(&mut self, val: usize) -> &mut Self {
+        // Paging subtracts two from the capacity, paging does this to
+        // make an offset for the page indicator. So to make sure that
+        // we can show the intended amount of items we need to add two
+        // to our value.
+        self.max_length = Some(val + 2);
+        self
+    }
+
+    /// Add a single item to the selector.
+    #[inline]
+    pub fn item<T: ToString>(&mut self, item: T) -> &mut Self {
+        self.item_checked(item, false)
+    }
+
+    /// Add a single item to the selector with a default checked state.
+    pub fn item_checked<T: ToString>(&mut self, item: T, checked: bool) -> &mut Self {
+        self.items.push(item.to_string());
+        self.defaults.push(checked);
+        self
+    }
+
+    /// Adds multiple items to the selector.
+    pub fn items<T: ToString>(&mut self, items: &[T]) -> &mut Self {
+        for item in items {
+            self.items.push(item.to_string());
+            self.defaults.push(false);
+        }
+        self
+    }
+
+    /// Adds multiple items to the selector with checked state
+    pub fn items_checked<T: ToString>(&mut self, items: &[(T, bool)]) -> &mut Self {
+        for &(ref item, checked) in items {
+            self.items.push(item.to_string());
+            self.defaults.push(checked);
+        }
+        self
+    }
+
+    /// Prefaces the menu with a prompt.
+    ///
+    /// By default, when a prompt is set the system also prints out a confirmation after
+    /// the selection. You can opt-out of this with [`report`](#method.report).
+    pub fn with_prompt<S: Into<String>>(&mut self, prompt: S) -> &mut Self {
+        self.prompt = Some(prompt.into());
+        self
+    }
+
+    /// Indicates whether to report the selected values after interaction.
+    ///
+    /// The default is to report the selections.
+    pub fn report(&mut self, val: bool) -> &mut Self {
+        self.report = val;
+        self
+    }
+
+    /// Enables user interaction and returns the result.
+    ///
+    /// The user can select the items with the 'Space' bar and on 'Enter' the indices of selected items will be returned.
+    /// The dialog is rendered on stderr.
+    /// Result contains `Vec<index>` if user hit 'Enter'.
+    /// This unlike [`interact_opt`](Self::interact_opt) does not allow to quit with 'Esc' or 'q'.
+    #[inline]
+    pub fn interact(&self) -> io::Result<Vec<usize>> {
+        self.interact_on(&Term::stderr())
+    }
+
+    /// Enables user interaction and returns the result.
+    ///
+    /// The user can select the items with the 'Space' bar and on 'Enter' the indices of selected items will be returned.
+    /// The dialog is rendered on stderr.
+    /// Result contains `Some(Vec<index>)` if user hit 'Enter' or `None` if user cancelled with 'Esc' or 'q'.
+    #[inline]
+    pub fn interact_opt(&self) -> io::Result<Option<Vec<usize>>> {
+        self.interact_on_opt(&Term::stderr())
+    }
+
+    /// Like [interact](#method.interact) but allows a specific terminal to be set.
+    ///
+    /// ## Examples
+    ///```rust,no_run
+    /// use dialoguer::MultiSelect;
+    /// use console::Term;
+    ///
+    /// fn main() -> std::io::Result<()> {
+    ///     let selections = MultiSelect::new()
+    ///         .item("Option A")
+    ///         .item("Option B")
+    ///         .interact_on(&Term::stderr())?;
+    ///
+    ///     println!("User selected options at indices {:?}", selections);
+    ///
+    ///     Ok(())
+    /// }
+    ///```
+    #[inline]
+    pub fn interact_on(&self, term: &Term) -> io::Result<Vec<usize>> {
+        self._interact_on(term, false)?
+            .ok_or_else(|| io::Error::new(io::ErrorKind::Other, "Quit not allowed in this case"))
+    }
+
+    /// Like [`interact_opt`](Self::interact_opt) but allows a specific terminal to be set.
+    ///
+    /// ## Examples
+    /// ```rust,no_run
+    /// use dialoguer::MultiSelect;
+    /// use console::Term;
+    ///
+    /// fn main() -> std::io::Result<()> {
+    ///     let selections = MultiSelect::new()
+    ///         .item("Option A")
+    ///         .item("Option B")
+    ///         .interact_on_opt(&Term::stdout())?;
+    ///
+    ///     match selections {
+    ///         Some(positions) => println!("User selected options at indices {:?}", positions),
+    ///         None => println!("User exited using Esc or q")
+    ///     }
+    ///
+    ///     Ok(())
+    /// }
+    /// ```
+    #[inline]
+    pub fn interact_on_opt(&self, term: &Term) -> io::Result<Option<Vec<usize>>> {
+        self._interact_on(term, true)
+    }
+
+    fn _interact_on(&self, term: &Term, allow_quit: bool) -> io::Result<Option<Vec<usize>>> {
+        if self.items.is_empty() {
+            return Err(io::Error::new(
+                io::ErrorKind::Other,
+                "Empty list of items given to `MultiSelect`",
+            ));
+        }
+
+        let mut paging = Paging::new(term, self.items.len(), self.max_length);
+        let mut render = TermThemeRenderer::new(term, self.theme);
+        let mut sel = 0;
+
+        let mut size_vec = Vec::new();
+
+        for items in self
+            .items
+            .iter()
+            .flat_map(|i| i.split('\n'))
+            .collect::<Vec<_>>()
+        {
+            let size = &items.len();
+            size_vec.push(*size);
+        }
+
+        let mut checked: Vec<bool> = self.defaults.clone();
+
+        term.hide_cursor()?;
+
+        loop {
+            if let Some(ref prompt) = self.prompt {
+                paging
+                    .render_prompt(|paging_info| render.multi_select_prompt(prompt, paging_info))?;
+            }
+
+            for (idx, item) in self
+                .items
+                .iter()
+                .enumerate()
+                .skip(paging.current_page * paging.capacity)
+                .take(paging.capacity)
+            {
+                render.multi_select_prompt_item(item, checked[idx], sel == idx)?;
+            }
+
+            term.flush()?;
+
+            match term.read_key()? {
+                Key::ArrowDown | Key::Tab | Key::Char('j') => {
+                    if sel == !0 {
+                        sel = 0;
+                    } else {
+                        sel = (sel as u64 + 1).rem(self.items.len() as u64) as usize;
+                    }
+                }
+                Key::ArrowUp | Key::BackTab | Key::Char('k') => {
+                    if sel == !0 {
+                        sel = self.items.len() - 1;
+                    } else {
+                        sel = ((sel as i64 - 1 + self.items.len() as i64)
+                            % (self.items.len() as i64)) as usize;
+                    }
+                }
+                Key::ArrowLeft | Key::Char('h') => {
+                    if paging.active {
+                        sel = paging.previous_page();
+                    }
+                }
+                Key::ArrowRight | Key::Char('l') => {
+                    if paging.active {
+                        sel = paging.next_page();
+                    }
+                }
+                Key::Char(' ') => {
+                    checked[sel] = !checked[sel];
+                }
+                Key::Char('a') => {
+                    if checked.iter().all(|&item_checked| item_checked) {
+                        checked.fill(false);
+                    } else {
+                        checked.fill(true);
+                    }
+                }
+                Key::Escape | Key::Char('q') => {
+                    if allow_quit {
+                        if self.clear {
+                            render.clear()?;
+                        } else {
+                            term.clear_last_lines(paging.capacity)?;
+                        }
+
+                        term.show_cursor()?;
+                        term.flush()?;
+
+                        return Ok(None);
+                    }
+                }
+                Key::Enter => {
+                    if self.clear {
+                        render.clear()?;
+                    }
+
+                    if let Some(ref prompt) = self.prompt {
+                        if self.report {
+                            let selections: Vec<_> = checked
+                                .iter()
+                                .enumerate()
+                                .filter_map(|(idx, &checked)| {
+                                    if checked {
+                                        Some(self.items[idx].as_str())
+                                    } else {
+                                        None
+                                    }
+                                })
+                                .collect();
+
+                            render.multi_select_prompt_selection(prompt, &selections[..])?;
+                        }
+                    }
+
+                    term.show_cursor()?;
+                    term.flush()?;
+
+                    return Ok(Some(
+                        checked
+                            .into_iter()
+                            .enumerate()
+                            .filter_map(|(idx, checked)| if checked { Some(idx) } else { None })
+                            .collect(),
+                    ));
+                }
+                _ => {}
+            }
+
+            paging.update(sel)?;
+
+            if paging.active {
+                render.clear()?;
+            } else {
+                render.clear_preserve_prompt(&size_vec)?;
+            }
+        }
+    }
+}
+
+impl<'a> MultiSelect<'a> {
+    /// Creates a multi select prompt with a specific theme.
+    pub fn with_theme(theme: &'a dyn Theme) -> Self {
+        Self {
+            items: vec![],
+            defaults: vec![],
+            clear: true,
+            prompt: None,
+            report: true,
+            max_length: None,
+            theme,
+        }
+    }
+}