Cleanup io calls and add cd function.

2026-08-31 10:11:29 +01:00
parent a996beb4aa
commit e44267a6fe
11 changed files with 157 additions and 118 deletions
@@ -0,0 +1,40 @@
+#include "bed.h"
+#include "internal/functions/functions.h"
+#include "internal/functions/suffixes.h"
+
+namespace bed::internal::functions {
+void Function::register_extented(BEd &ctx) {
+  ctx.functions.insert(
+    "cd",
+    Function{
+      .address_kind = Function::AddressKind::None,
+      .argument_kind = Function::ArgumentKind::Any,
+      .input_mode = Function::InputMode::None,
+      .desc = "Change directory.",
+      .default_address = "",
+      .accept_zero = false,
+      .pre_text_mode = nullptr,
+      .handle = [](BEd &ctx, const buffer::Address &, vase::Shard *, const Argument &arg_, std::vector<buffer::Line> *) {
+        auto path = std::get<std::string>(arg_);
+        const auto first = path.find_first_not_of(" \t");
+        const auto last = path.find_last_not_of(" \t");
+        path = path.substr(first, last - first + 1);
+        if (path == "~")
+          path = std::getenv("HOME");
+        if (path.starts_with("~/")) {
+          const char *home = getenv("HOME");
+          if (home)
+            path = std::string(home) + path.substr(1);
+        }
+        if (first != std::string::npos)
+          if (chdir(path.c_str()) == -1)
+            throw ed_error("Can't change directory.");
+        char cwd[PATH_MAX];
+        if (!getcwd(cwd, sizeof(cwd)))
+          throw ed_error("Directory changed, but couldn't determine current directory.");
+        ctx.io.write_line(cwd);
+      },
+    }
+  );
+}
+} // namespace bed::internal::functions