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use std::error::Error;
use std::io;
use std::path::PathBuf;
use std::string::ToString;
use colours::Colours;
use column::{Alignment, Column, Cell};
use dir::Dir;
use feature::xattr::{Attribute, FileAttributes};
use file::fields as f;
use file::File;
use options::{Columns, FileFilter, RecurseOptions, SizeFormat};
use ansi_term::{ANSIString, ANSIStrings, Style};
use datetime::local::{LocalDateTime, DatePiece};
use datetime::format::{DateFormat};
use datetime::zoned::{VariableOffset, TimeZone};
use locale;
use number_prefix::{binary_prefix, decimal_prefix, Prefixed, Standalone, PrefixNames};
use users::{OSUsers, Users};
use users::mock::MockUsers;
use super::filename;
/// With the **Details** view, the output gets formatted into columns, with
/// each `Column` object showing some piece of information about the file,
/// such as its size, or its permissions.
///
/// To do this, the results have to be written to a table, instead of
/// displaying each file immediately. Then, the width of each column can be
/// calculated based on the individual results, and the fields are padded
/// during output.
///
/// Almost all the heavy lifting is done in a Table object, which handles the
/// columns for each row.
#[derive(PartialEq, Debug, Copy, Clone, Default)]
pub struct Details {
/// A Columns object that says which columns should be included in the
/// output in the general case. Directories themselves can pick which
/// columns are *added* to this list, such as the Git column.
pub columns: Option<Columns>,
/// Whether to recurse through directories with a tree view, and if so,
/// which options to use. This field is only relevant here if the `tree`
/// field of the RecurseOptions is `true`.
pub recurse: Option<(RecurseOptions, FileFilter)>,
/// Whether to show a header line or not.
pub header: bool,
/// Whether to show each file's extended attributes.
pub xattr: bool,
/// The colours to use to display information in the table, including the
/// colour of the tree view symbols.
pub colours: Colours,
}
impl Details {
pub fn view(&self, dir: Option<&Dir>, files: &[File]) {
// First, transform the Columns object into a vector of columns for
// the current directory.
let columns_for_dir = match self.columns {
Some(cols) => cols.for_dir(dir),
None => Vec::new(),
};
let mut table = Table::with_options(self.colours, columns_for_dir);
if self.header { table.add_header() }
// Then add files to the table and print it out.
self.add_files_to_table(&mut table, files, 0);
for cell in table.print_table() {
println!("{}", cell.text);
}
}
/// Adds files to the table - recursively, if the `recurse` option
/// is present.
fn add_files_to_table<U: Users>(&self, table: &mut Table<U>, src: &[File], depth: usize) {
for (index, file) in src.iter().enumerate() {
table.add_file(file, depth, index == src.len() - 1, true);
let mut xattrs = Vec::new();
let mut errors = Vec::new();
if self.xattr {
match file.path.attributes() {
Ok(xs) => {
for xattr in xs {
xattrs.push(xattr);
}
},
Err(e) => errors.push((e, None)),
}
}
// There are two types of recursion that exa supports: a tree
// view, which is dealt with here, and multiple listings, which is
// dealt with in the main module. So only actually recurse if we
// are in tree mode - the other case will be dealt with elsewhere.
if let Some((r, filter)) = self.recurse {
if file.is_directory() && r.tree && !r.is_too_deep(depth) {
// Use the filter to remove unwanted files *before* expanding
// them, so we don't examine any directories that wouldn't
// have their contents listed anyway.
match file.to_dir() {
Ok(ref dir) => {
let mut files = Vec::new();
for file_to_add in dir.files() {
match file_to_add {
Ok(f) => files.push(f),
Err((path, e)) => errors.push((e, Some(path)))
}
}
filter.transform_files(&mut files);
if !files.is_empty() {
for xattr in xattrs {
table.add_xattr(xattr, depth + 1, false);
}
for (error, path) in errors {
table.add_error(&error, depth + 1, false, path);
}
self.add_files_to_table(table, &files, depth + 1);
continue;
}
},
Err(e) => {
errors.push((e, None));
},
}
}
}
let count = xattrs.len();
for (index, xattr) in xattrs.into_iter().enumerate() {
table.add_xattr(xattr, depth + 1, errors.is_empty() && index == count - 1);
}
let count = errors.len();
for (index, (error, path)) in errors.into_iter().enumerate() {
table.add_error(&error, depth + 1, index == count - 1, path);
}
}
}
}
struct Row {
/// Vector of cells to display.
///
/// Most of the rows will be files that have had their metadata
/// successfully queried and displayed in these cells, so this will almost
/// always be `Some`. It will be `None` for a row that's only displaying
/// an attribute or an error.
cells: Option<Vec<Cell>>,
// Did You Know?
// A Vec<Cell> and an Option<Vec<Cell>> actually have the same byte size!
/// This file's name, in coloured output. The name is treated separately
/// from the other cells, as it never requires padding.
name: Cell,
/// How many directories deep into the tree structure this is. Directories
/// on top have depth 0.
depth: usize,
/// Whether this is the last entry in the directory. This flag is used
/// when calculating the tree view.
last: bool,
}
impl Row {
/// Gets the 'width' of the indexed column, if present. If not, returns 0.
fn column_width(&self, index: usize) -> usize {
<
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