first commit

1 files changed, 76 insertions, 0 deletions

diff --git a/smash/parser.c b/smash/parser.c
new file mode 100644
index 0000000..33fb410
--- /dev/null
+++ b/smash/parser.c
@@ -0,0 +1,76 @@
+#include "parser.h"
+
+#include "../lib/malloc/malloc.h"
+#include "../lib/cstr/cstr.h"
+
+#include "../lib/sys/write.h"
+
+char **__new_argv(char *exp);
+void __free_argv(char **argv);
+
+expression_list_t *new_expression_from_line(char *line)
+{
+
+	u64 n = cstr_split(line, '|');
+	char *current = line;
+	char *next    = 0;
+
+
+	for (; n > 0; --n) {
+		next = (char*)next_split(current);
+
+		strip_cstr(current, ' ');
+
+		write(0, current, cstr_length(current));
+		write(0, "\\n\n", 3);
+
+		current = next;
+	}
+	return 0;
+}
+
+char **__new_argv(char *exp)
+{
+	u64 n = cstr_split(exp, ' ');
+	char **argv = malloc(sizeof(char*) * n + 1);
+	u64 i = 0;
+	char *current = exp;
+	char *next;
+
+	for (; n > 0; --n) {
+		next = (char*)next_split(current);
+		strip_cstr(current, ' ');
+
+		if (cstr_length(current))
+			argv[i++] = current;
+
+		current = next;
+	}
+
+	argv[i] = 0;
+
+	return argv;
+}
+
+
+void __free_argv(char **argv)
+{
+	free(argv);
+}
+
+#ifdef PARSER_UNIT_TEST
+
+#include "../lib/sys/execve.h"
+
+int main() {
+	const char exp[] = "/bin/ls -a -l -h";
+	char **argv = __new_argv(exp);
+	char **p = argv;
+	char *const envp[] = { 0 };
+
+	execve(argv[0], argv, envp);
+
+	free(argv);
+}
+
+#endif