sh: Load script from file

1 files changed, 24 insertions, 2 deletions

diff --git a/userland/minibox/utilities/sh/sh.c b/userland/minibox/utilities/sh/sh.c
index 433c2e1..1505de3 100644
--- a/userland/minibox/utilities/sh/sh.c
+++ b/userland/minibox/utilities/sh/sh.c
@@ -145,8 +145,30 @@ void get_line(struct sb *s) {
 }
 
 int sh_main(int argc, char **argv) {
-  (void)argc;
-  (void)argv;
+  if (argc > 1) {
+    int fd = open(argv[1], O_RDONLY, 0);
+    char buffer[8192];
+    struct sb file;
+    sb_init(&file);
+
+    for (;;) {
+      int rc = read(fd, buffer, 8192);
+      if (0 == rc) {
+        break;
+      }
+      sb_append_buffer(&file, buffer, rc);
+    }
+
+    close(fd);
+    struct TOKEN *h = lex(SB_TO_SV(file));
+    struct AST *ast_h = generate_ast(h);
+    execute_ast(ast_h);
+    free_tokens(h);
+    free_ast(ast_h);
+    sb_free(&file);
+    return 0;
+  }
+
   for (;;) {
     char buffer[256];
     printf("%s : ", getcwd(buffer, 256));