userspace: Add basic find utility

This is mostly working but is missing -exec and -ok support. It can search files though :^)
2026-07-08 05:46:56 +03:00
parent fa89645542
commit 3148c28c3d
7 changed files with 732 additions and 0 deletions
--- a/userspace/programs/find/Token.cpp
+++ b/userspace/programs/find/Token.cpp
@@ -0,0 +1,57 @@
+#include "Token.h"
+
+BAN::Vector<Token> tokenize(const char* const* strings)
+{
+	constexpr Token type_map[] {
+		{ Token::TOK_NOT,       "!"        },
+		{ Token::TOK_LPAREN,    "("        },
+		{ Token::TOK_RPAREN,    ")"        },
+		{ Token::TOK_CURLIES,   "{}"       },
+		{ Token::TOK_PLUS,      "+"        },
+		{ Token::TOK_SEMICOLON, ";"        },
+		{ Token::TOK_AND,       "-a"       },
+		{ Token::TOK_OR,        "-o"       },
+		{ Token::TOK_NAME,      "-name"    },
+		{ Token::TOK_INAME,     "-iname"   },
+		{ Token::TOK_PATH,      "-path"    },
+		{ Token::TOK_NOUSER,    "-nouser"  },
+		{ Token::TOK_NOGROUP,   "-nogroup" },
+		{ Token::TOK_MOUNT,     "-mount"   },
+		{ Token::TOK_XDEV,      "-xdev"    },
+		{ Token::TOK_PRUNE,     "-prune"   },
+		{ Token::TOK_PERM,      "-perm"    },
+		{ Token::TOK_TYPE,      "-type"    },
+		{ Token::TOK_LINKS,     "-links"   },
+		{ Token::TOK_USER,      "-user"    },
+		{ Token::TOK_GROUP,     "-group"   },
+		{ Token::TOK_SIZE,      "-size"    },
+		{ Token::TOK_ATIME,     "-atime"   },
+		{ Token::TOK_CTIME,     "-ctime"   },
+		{ Token::TOK_MTIME,     "-mtime"   },
+		{ Token::TOK_EXEC,      "-exec"    },
+		{ Token::TOK_OK,        "-ok"      },
+		{ Token::TOK_PRINT,     "-print"   },
+		{ Token::TOK_PRINT0,    "-print0"  },
+		{ Token::TOK_NEWER,     "-newer"   },
+		{ Token::TOK_DEPTH,     "-depth"   },
+	};
+
+	BAN::Vector<Token> tokens;
+
+	for (size_t i = 0; strings[i]; i++)
+	{
+		Token::Type type { Token::TOK_LITERAL };
+		for (const auto& entry : type_map)
+		{
+			if (strcmp(strings[i], entry.string) != 0)
+				continue;
+			type = entry.type;
+			break;
+		}
+		MUST(tokens.push_back({ type, strings[i] }));
+	}
+
+	MUST(tokens.push_back({ Token::TOK_END, "<EOF>" }));
+
+	return tokens;
+}