intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 32 insertions, 0 deletions

diff --git a/library/cpp/getopt/small/posix_getopt.h b/library/cpp/getopt/small/posix_getopt.h
new file mode 100644
index 0000000000..e6af1e0284
--- /dev/null
+++ b/library/cpp/getopt/small/posix_getopt.h
@@ -0,0 +1,32 @@
+#pragma once
+
+// implementation of posix getopt using last getopt for demonstration purposes
+
+#include "last_getopt.h"
+
+namespace NLastGetopt {
+    extern char* optarg;
+    extern int optind;
+    extern int optopt;
+    extern int opterr;
+    extern int optreset;
+
+    enum {
+        no_argument = NO_ARGUMENT,
+        required_argument = REQUIRED_ARGUMENT,
+        optional_argument = OPTIONAL_ARGUMENT,
+    };
+
+    struct option {
+        const char* name;
+        int has_arg;
+        int* flag;
+        int val;
+    };
+
+    int getopt(int argc, char* const* argv, const char* optstring);
+    int getopt_long(int argc, char* const* argv, const char* optstring,
+                    const struct option* longopts, int* longindex);
+    int getopt_long_only(int argc, char* const* argv, const char* optstring,
+                         const struct option* longopts, int* longindex);
+}