LibLine: Change get_line to return a Result<String, Error>

This fixes a bunch of FIXME's in LibLine. Also handles the case where read() would read zero bytes in vt_dsr() and effectively block forever by erroring out. Fixes #2370
Author: https://github.com/alimpfard Commit: bc9013f706 Pull-request: https://github.com/SerenityOS/serenity/pull/2372 Issue: https://github.com/SerenityOS/serenity/issues/2370 Reviewed-by: https://github.com/bugaevc
2025-08-15 23:09:05 +00:00 · 2020-05-25 16:57:07 +04:30 · 2020-05-25 16:57:07 +04:30 · bc9013f706 · 2024-07-19 06:08:54 +09:00
commit bc9013f706
parent 1e30ef239b
7 changed files with 87 additions and 22 deletions
--- a/Userland/test-crypto.cpp
+++ b/Userland/test-crypto.cpp
@ -113,7 +113,12 @@ int run(Function<void(const char*, size_t)> fn)
        Line::Editor editor;
        editor.initialize();
        for (;;) {
-            auto line = editor.get_line("> ");
+            auto line_result = editor.get_line("> ");
+
+            if (line_result.is_error())
+                break;
+            auto& line = line_result.value();
+
            if (line == ".wait") {
                loop.exec();
            } else {