Struct broot::preview::ZeroLenFileView

pub struct ZeroLenFileView { /* private fields */ }

a (light) display for a file declaring a size 0, as happens for many system “files”, for example in /proc

Implementations

impl ZeroLenFileView

pub fn new(path: PathBuf) -> Self

Examples found in repository

src/preview/preview.rs (line 96)

    pub fn unfiltered_text(
        path: &Path,
        con: &AppContext,
    ) -> Self {
        match SyntacticView::new(path, InputPattern::none(), &mut Dam::unlimited(), con, false) {
            Ok(Some(sv)) => Self::Syntactic(sv),
            Err(ProgramError::ZeroLenFile | ProgramError::UnmappableFile) => {
                debug!("zero len or unmappable file - check if system file");
                Self::ZeroLen(ZeroLenFileView::new(path.to_path_buf()))
            }
            Err(ProgramError::SyntectCrashed { details }) => {
                warn!("syntect crashed with message : {details:?}");
                Self::unstyled_text(path, con)
            }
            // not previewable as UTF8 text
            // we'll try reading it as binary
            Err(ProgramError::UnprintableFile) => Self::hex(path),
            _ => Self::hex(path),
        }
    }
    /// build a text preview with no syntax highlighting, if possible
    pub fn unstyled_text(
        path: &Path,
        con: &AppContext,
    ) -> Self {
        match SyntacticView::new(path, InputPattern::none(), &mut Dam::unlimited(), con, true) {
            Ok(Some(sv)) => Self::Syntactic(sv),
            Err(ProgramError::ZeroLenFile | ProgramError::UnmappableFile) => {
                debug!("zero len or unmappable file - check if system file");
                Self::ZeroLen(ZeroLenFileView::new(path.to_path_buf()))
            }
            // not previewable as UTF8 text - we'll try reading it as binary
            Err(ProgramError::UnprintableFile) => Self::hex(path),
            _ => Self::hex(path),
        }
    }

pub fn display(
    &mut self,
    w: &mut W,
    _screen: Screen,
    panel_skin: &PanelSkin,
    area: &Area
) -> Result<(), ProgramError>

Examples found in repository

src/preview/preview.rs (line 257)

    pub fn display(
        &mut self,
        w: &mut W,
        disc: &DisplayContext,
        area: &Area,
    ) -> Result<(), ProgramError> {
        let panel_skin = &disc.panel_skin;
        let screen = disc.screen;
        let con = &disc.con;
        match self {
            Self::Image(iv) => iv.display(w, disc, area),
            Self::Syntactic(sv) => sv.display(w, screen, panel_skin, area, con),
            Self::ZeroLen(zlv) => zlv.display(w, screen, panel_skin, area),
            Self::Hex(hv) => hv.display(w, screen, panel_skin, area),
            Self::IoError(err) => {
                let mut y = area.top;
                w.queue(cursor::MoveTo(area.left, y))?;
                let mut cw = CropWriter::new(w, area.width as usize);
                cw.queue_str(&panel_skin.styles.default, "An error prevents the preview:")?;
                cw.fill(&panel_skin.styles.default, &SPACE_FILLING)?;
                y += 1;
                w.queue(cursor::MoveTo(area.left, y))?;
                let mut cw = CropWriter::new(w, area.width as usize);
                cw.queue_g_string(&panel_skin.styles.status_error, err.to_string())?;
                cw.fill(&panel_skin.styles.default, &SPACE_FILLING)?;
                y += 1;
                while y < area.top + area.height {
                    w.queue(cursor::MoveTo(area.left, y))?;
                    let mut cw = CropWriter::new(w, area.width as usize);
                    cw.fill(&panel_skin.styles.default, &SPACE_FILLING)?;
                    y += 1;
                }
                Ok(())
            }
        }
    }