LibCore: Add find_executable_in_path.

lanmonster · Sep 16, 2020 · 3283f5b · 3283f5b
1 parent d55e3c4
commit 3283f5b
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diff --git a/Libraries/LibCore/DirIterator.cpp b/Libraries/LibCore/DirIterator.cpp
@@ -25,6 +25,7 @@
  */
 
 #include <LibCore/DirIterator.h>
+#include <AK/Vector.h>
 #include <errno.h>
 
 namespace Core {
@@ -98,4 +99,23 @@ String DirIterator::next_full_path()
  return String::format("%s/%s", m_path.characters(), next_path().characters());
 }
 
+String find_executable_in_path(String filename)
+{
+ if (filename.starts_with('/')) {
+ if (access(filename.characters(), X_OK) == 0)
+ return filename;
+
+ return {};
+ }
+
+ for (auto directory : StringView { getenv("PATH") }.split_view(':')) {
+ auto fullpath = String::format("%s/%s", directory, filename);
+
+ if (access(fullpath.characters(), X_OK) == 0)
+ return fullpath;
+ }
+
+ return {};
+}
+
 }
diff --git a/Libraries/LibCore/DirIterator.h b/Libraries/LibCore/DirIterator.h
@@ -60,4 +60,6 @@ class DirIterator {
  bool advance_next();
 };
 
+String find_executable_in_path(String filename);
+
 }