shared: Introduce new top-level dir and move 1st party lib code there.

This commit moves all first-party code developed for this project from lib/
to shared/, so that lib/ now only contains third-party code.

The following directories are moved as-is from lib to shared:

    lib/libc            -> shared/libc
    lib/memzip          -> shared/memzip
    lib/netutils        -> shared/netutils
    lib/timeutils       -> shared/timeutils
    lib/upytesthelper   -> shared/upytesthelper

All files in lib/embed/ have been moved to shared/libc/.

lib/mp-readline has been moved to shared/readline.

lib/utils has been moved to shared/runtime, with the exception of
lib/utils/printf.c which has been moved to shared/libc/printf.c.

Signed-off-by: Damien George <damien@micropython.org>

1 files changed, 17 insertions, 0 deletions

diff --git a/shared/memzip/import.c b/shared/memzip/import.c
new file mode 100644
index 000000000..2d5225b88
--- /dev/null
+++ b/shared/memzip/import.c
@@ -0,0 +1,17 @@
+#include <stdio.h>
+
+#include "py/lexer.h"
+#include "memzip.h"
+
+mp_import_stat_t mp_import_stat(const char *path) {
+    MEMZIP_FILE_INFO info;
+
+    if (memzip_stat(path, &info) != MZ_OK) {
+        return MP_IMPORT_STAT_NO_EXIST;
+    }
+
+    if (info.is_dir) {
+        return MP_IMPORT_STAT_DIR;
+    }
+    return MP_IMPORT_STAT_FILE;
+}