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Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,150 @@ | ||
| //! This module contains an [`Dup`] setting the [`Table`]. | ||
| //! | ||
| //! # Example | ||
| //! | ||
| //! ``` | ||
| //! # use tabled::{Table, settings::{Dup, object::{Columns, Rows}}}; | ||
| //! # let data: Vec<&'static str> = Vec::new(); | ||
| //! let mut table = Table::new(&data); | ||
| //! table.with(Dup::new(Rows::first(), Columns::first())); | ||
| //! ``` | ||
| //! | ||
| //! [`Table`]: crate::Table | ||
|
|
||
| use papergrid::config::Position; | ||
|
|
||
| use crate::{ | ||
| grid::records::{ExactRecords, PeekableRecords, Records, RecordsMut}, | ||
| settings::{object::Object, TableOption}, | ||
| }; | ||
|
|
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| /// [`Dup`] duplicates a given set of cells into another set of ones [`Table`]. | ||
| /// | ||
| /// # Example | ||
| /// | ||
| /// ``` | ||
| /// use tabled::{Table, settings::{object::Rows, Dup}}; | ||
| /// | ||
| /// let data = [ | ||
| /// ["1", "2", "3"], | ||
| /// ["Some\nMulti\nLine\nText", "and a line", "here"], | ||
| /// ["4", "5", "6"], | ||
| /// ]; | ||
| /// | ||
| /// let mut table = Table::new(&data); | ||
| /// table.with(Dup::new(Rows::single(1), Rows::single(2))); | ||
| /// | ||
| /// assert_eq!( | ||
| /// table.to_string(), | ||
| /// "+-------+------------+------+\n\ | ||
| /// | 0 | 1 | 2 |\n\ | ||
| /// +-------+------------+------+\n\ | ||
| /// | Some | and a line | here |\n\ | ||
| /// | Multi | | |\n\ | ||
| /// | Line | | |\n\ | ||
| /// | Text | | |\n\ | ||
| /// +-------+------------+------+\n\ | ||
| /// | Some | and a line | here |\n\ | ||
| /// | Multi | | |\n\ | ||
| /// | Line | | |\n\ | ||
| /// | Text | | |\n\ | ||
| /// +-------+------------+------+\n\ | ||
| /// | 4 | 5 | 6 |\n\ | ||
| /// +-------+------------+------+", | ||
| /// ) | ||
| /// ``` | ||
| /// | ||
| /// [`Table`]: crate::Table | ||
| #[derive(Debug, Clone, Copy, Hash, PartialEq, Eq, PartialOrd, Ord)] | ||
| pub struct Dup<Dst, Src> { | ||
| src: Src, | ||
| dst: Dst, | ||
| } | ||
|
|
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| impl<Dst, Src> Dup<Dst, Src> { | ||
| /// New creates a new [`Dup`] modifier. | ||
| /// | ||
| /// # Example | ||
| /// | ||
| /// ``` | ||
| /// # use tabled::{Table, settings::{Dup, object::{Columns, Rows}}}; | ||
| /// # let data: Vec<&'static str> = Vec::new(); | ||
| /// let mut table = Table::new(&data); | ||
| /// table.with(Dup::new(Rows::first(), Columns::last())); | ||
| /// ``` | ||
| pub fn new(dst: Dst, src: Src) -> Self { | ||
| Self { src, dst } | ||
| } | ||
| } | ||
|
|
||
| impl<Dst, Src, R, D, C> TableOption<R, D, C> for Dup<Dst, Src> | ||
| where | ||
| Dst: Object<R>, | ||
| Src: Object<R>, | ||
| R: Records + ExactRecords + PeekableRecords + RecordsMut<String>, | ||
| { | ||
| fn change(self, records: &mut R, _: &mut C, _: &mut D) { | ||
| let input = collect_input(records, self.src); | ||
| set_cells(records, &input, self.dst); | ||
| } | ||
| } | ||
|
|
||
| fn collect_input<R, O>(records: &mut R, src: O) -> Vec<String> | ||
| where | ||
| O: Object<R>, | ||
| R: Records + ExactRecords + PeekableRecords + RecordsMut<String>, | ||
| { | ||
| let count_rows = records.count_rows(); | ||
| let count_columns = records.count_columns(); | ||
|
|
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| let mut input = Vec::new(); | ||
| for entity in src.cells(records) { | ||
| for pos in entity.iter(count_rows, count_columns) { | ||
| if !is_valid_cell(pos, count_rows, count_columns) { | ||
| continue; | ||
| } | ||
|
|
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| let text = records.get_text(pos).to_owned(); | ||
| input.push(text); | ||
| } | ||
| } | ||
|
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| input | ||
| } | ||
|
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| fn set_cells<R, O>(records: &mut R, src: &[String], dst: O) | ||
| where | ||
| O: Object<R>, | ||
| R: Records + ExactRecords + PeekableRecords + RecordsMut<String>, | ||
| { | ||
| if src.is_empty() { | ||
| return; | ||
| } | ||
|
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| let count_rows = records.count_rows(); | ||
| let count_columns = records.count_columns(); | ||
|
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| for entity in dst.cells(records) { | ||
| let mut source = src.iter().cycle(); | ||
| for pos in entity.iter(count_rows, count_columns) { | ||
| if !is_valid_cell(pos, count_rows, count_columns) { | ||
| continue; | ||
| } | ||
|
|
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| let text = source.next().unwrap().clone(); | ||
| records.set(pos, text); | ||
| } | ||
| } | ||
| } | ||
|
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| fn is_valid_cell((row, col): Position, count_rows: usize, count_columns: usize) -> bool { | ||
| if row > count_rows { | ||
| return false; | ||
| } | ||
|
|
||
| if col > count_columns { | ||
| return false; | ||
| } | ||
|
|
||
| true | ||
| } |
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