vt100 0.8.0

Library for parsing terminal data
Documentation 
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#[test]
fn scroll_regions() {
    let mut parser = vt100::Parser::default();
    parser.process(b"\x1b[m\x1b[2J\x1b[H1\r\n2\r\n3\r\n4\r\n5\r\n6\r\n7\r\n8\r\n9\r\n10\r\n11\r\n12\r\n13\r\n14\r\n15\r\n16\r\n17\r\n18\r\n19\r\n20\r\n21\r\n22\r\n23\r\n24");
    assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24");

    parser.process(b"\x1b[24;50H\n");
    assert_eq!(parser.screen().contents(), "2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24");

    parser.process(b"\x1b[m\x1b[2J\x1b[H1\r\n2\r\n3\r\n4\r\n5\r\n6\r\n7\r\n8\r\n9\r\n10\r\n11\r\n12\r\n13\r\n14\r\n15\r\n16\r\n17\r\n18\r\n19\r\n20\r\n21\r\n22\r\n23\r\n24");

    parser.process(b"\x1b[10;20r");
    assert_eq!(parser.screen().cursor_position(), (9, 0));

    parser.process(b"\x1b[20;50H");
    assert_eq!(parser.screen().cursor_position(), (19, 49));

    parser.process(b"\n");
    assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n\n21\n22\n23\n24");
    assert_eq!(parser.screen().cursor_position(), (19, 49));

    parser.process(b"\x1b[B");
    assert_eq!(parser.screen().cursor_position(), (19, 49));

    parser.process(b"\x1b[20A");
    assert_eq!(parser.screen().cursor_position(), (9, 49));
    parser.process(b"\x1b[1;24r\x1b[m\x1b[2J\x1b[H1\r\n2\r\n3\r\n4\r\n5\r\n6\r\n7\r\n8\r\n9\r\n10\r\n11\r\n12\r\n13\r\n14\r\n15\r\n16\r\n17\r\n18\r\n19\r\n20\r\n21\r\n22\r\n23\r\n24");
    parser.process(b"\x1b[10;20r\x1b[15;50H\x1b[2L");
    assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n\n\n15\n16\n17\n18\n21\n22\n23\n24");
    parser.process(b"\x1b[10;50H\x1bM");
    assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n\n10\n11\n12\n13\n14\n\n\n15\n16\n17\n21\n22\n23\n24");

    assert_eq!(parser.screen().cursor_position(), (9, 49));
    parser.process(b"\x1b[23d");
    assert_eq!(parser.screen().cursor_position(), (22, 49));
    parser.process(b"\n");
    assert_eq!(parser.screen().cursor_position(), (23, 49));
    assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n\n10\n11\n12\n13\n14\n\n\n15\n16\n17\n21\n22\n23\n24");
}

#[test]
fn origin_mode() {
    let mut parser = vt100::Parser::default();

    parser.process(b"\x1b[5;15r");
    assert_eq!(parser.screen().cursor_position(), (4, 0));

    parser.process(b"\x1b[10;50H");
    assert_eq!(parser.screen().cursor_position(), (9, 49));

    parser.process(b"\x1b[?6h");
    assert_eq!(parser.screen().cursor_position(), (4, 0));

    parser.process(b"\x1b[10;50H");
    assert_eq!(parser.screen().cursor_position(), (13, 49));

    parser.process(b"\x1b[?6l");
    assert_eq!(parser.screen().cursor_position(), (0, 0));

    parser.process(b"\x1b[10;50H");
    assert_eq!(parser.screen().cursor_position(), (9, 49));

    parser.process(b"\x1b[?6h\x1b[?47h\x1b[6;16r\x1b[H");
    assert_eq!(parser.screen().cursor_position(), (0, 0));

    parser.process(b"\x1b[?6h");
    assert_eq!(parser.screen().cursor_position(), (5, 0));

    parser.process(b"\x1b[?47l\x1b[H");
    assert_eq!(parser.screen().cursor_position(), (4, 0));
}

#[allow(clippy::cognitive_complexity)]
#[test]
fn scrollback() {
    let mut parser = vt100::Parser::new(24, 80, 10);

    parser.process(b"1\r\n2\r\n3\r\n4\r\n5\r\n6\r\n7\r\n8\r\n9\r\n10\r\n11\r\n12\r\n13\r\n14\r\n15\r\n16\r\n17\r\n18\r\n19\r\n20\r\n21\r\n22\r\n23\r\n24");
    assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24");

    parser.process(b"\r\n25\r\n26\r\n27\r\n28\r\n29\r\n30");
    assert_eq!(parser.screen().contents(), "7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30");

    parser.set_scrollback(0);
    assert_eq!(parser.screen().scrollback(), 0);
    assert_eq!(parser.screen().contents(), "7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30");

    parser.set_scrollback(1);
    assert_eq!(parser.screen().scrollback(), 1);
    assert_eq!(parser.screen().contents(), "6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29");

    parser.set_scrollback(3);
    assert_eq!(parser.screen().scrollback(), 3);
    assert_eq!(parser.screen().contents(), "4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27");

    parser.set_scrollback(6);
    assert_eq!(parser.screen().scrollback(), 6);
    assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24");

    parser.set_scrollback(7);
    assert_eq!(parser.screen().scrollback(), 6);
    assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24");

    parser.set_scrollback(0);
    assert_eq!(parser.screen().scrollback(), 0);
    assert_eq!(parser.screen().contents(), "7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30");

    parser.set_scrollback(7);
    assert_eq!(parser.screen().scrollback(), 6);
    assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24");

    parser.process(b"\r\n31");
    assert_eq!(parser.screen().scrollback(), 7);
    assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24");

    parser.process(b"\r\n32");
    assert_eq!(parser.screen().scrollback(), 8);
    assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24");

    parser.process(b"\r\n33");
    assert_eq!(parser.screen().scrollback(), 9);
    assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24");

    parser.process(b"\r\n34");
    assert_eq!(parser.screen().scrollback(), 10);
    assert_eq!(parser.screen().contents(), "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24");

    parser.process(b"\r\n35");
    assert_eq!(parser.screen().scrollback(), 10);
    assert_eq!(parser.screen().contents(), "2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25");

    parser.process(b"\r\n36");
    assert_eq!(parser.screen().scrollback(), 10);
    assert_eq!(parser.screen().contents(), "3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26");

    parser.set_scrollback(12);
    assert_eq!(parser.screen().scrollback(), 10);
    assert_eq!(parser.screen().contents(), "3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26");

    parser.set_scrollback(0);
    assert_eq!(parser.screen().scrollback(), 0);
    assert_eq!(parser.screen().contents(), "13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36");

    parser.process(b"\r\n37\r\n38");
    assert_eq!(parser.screen().scrollback(), 0);
    assert_eq!(parser.screen().contents(), "15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38");

    parser.set_scrollback(5);
    assert_eq!(parser.screen().scrollback(), 5);
    assert_eq!(parser.screen().contents(), "10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33");

    parser.process(b"\r\n39\r\n40");
    assert_eq!(parser.screen().scrollback(), 7);
    assert_eq!(parser.screen().contents(), "10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33");
}

#[test]
fn edge_of_screen() {
    let mut parser = vt100::Parser::default();
    let screen = parser.screen().clone();

    parser.process(b"\x1b[31m\x1b[24;75Hfooba\x08r\x08\x1b[1@a");
    assert_eq!(parser.screen().cursor_position(), (23, 79));
    assert_eq!(parser.screen().contents(), "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n                                                                          foobar");
    assert_eq!(
        parser.screen().contents_formatted(),
        &b"\x1b[?25h\x1b[m\x1b[H\x1b[J\x1b[24;75H\x1b[31mfoobar\x1b[24;80H"[..]
    );
    assert_eq!(
        parser.screen().contents_diff(&screen),
        b"\x1b[24;75H\x1b[31mfoobar\x1b[24;80H"
    );
}