Merging upstream version 1.75.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 67 insertions, 0 deletions

diff --git a/vendor/supports-hyperlinks/src/lib.rs b/vendor/supports-hyperlinks/src/lib.rs
new file mode 100644
index 000000000..83290b211
--- /dev/null
+++ b/vendor/supports-hyperlinks/src/lib.rs
@@ -0,0 +1,67 @@
+#![doc = include_str!("../README.md")]
+
+/// possible stream sources
+#[derive(Clone, Copy, Debug)]
+pub enum Stream {
+    Stdout,
+    Stderr,
+}
+
+/// Returns true if the current terminal, detected through various environment
+/// variables, is known to support hyperlink rendering.
+pub fn supports_hyperlinks() -> bool {
+    // Hyperlinks can be forced through this env var.
+    if let Ok(arg) = std::env::var("FORCE_HYPERLINK") {
+        return arg.trim() != "0";
+    }
+
+    if std::env::var("DOMTERM").is_ok() {
+        // DomTerm
+        return true;
+    }
+
+    if let Ok(version) = std::env::var("VTE_VERSION") {
+        // VTE-based terminals above v0.50 (Gnome Terminal, Guake, ROXTerm, etc)
+        if version.parse().unwrap_or(0) >= 5000 {
+            return true;
+        }
+    }
+
+    if let Ok(program) = std::env::var("TERM_PROGRAM") {
+        if matches!(
+            &program[..],
+            "Hyper" | "iTerm.app" | "terminology" | "WezTerm" | "vscode"
+        ) {
+            return true;
+        }
+    }
+
+    if let Ok(term) = std::env::var("TERM") {
+        if matches!(&term[..], "xterm-kitty" | "alacritty" | "alacritty-direct") {
+            return true;
+        }
+    }
+
+    if let Ok(term) = std::env::var("COLORTERM") {
+        if matches!(&term[..], "xfce4-terminal") {
+            return true;
+        }
+    }
+
+    // Windows Terminal and Konsole
+    std::env::var("WT_SESSION").is_ok() || std::env::var("KONSOLE_VERSION").is_ok()
+}
+
+fn is_a_tty(stream: Stream) -> bool {
+    use is_terminal::*;
+    match stream {
+        Stream::Stdout => std::io::stdout().is_terminal(),
+        Stream::Stderr => std::io::stderr().is_terminal(),
+    }
+}
+
+/// Returns true if `stream` is a TTY, and the current terminal
+/// [supports_hyperlinks].
+pub fn on(stream: Stream) -> bool {
+    (std::env::var("FORCE_HYPERLINK").is_ok() || is_a_tty(stream)) && supports_hyperlinks()
+}