1 files changed, 73 insertions, 0 deletions
diff --git a/shell/bbsh.c b/shell/bbsh.c
new file mode 100644
index 0000000..f2d76cc
--- /dev/null
+++ b/shell/bbsh.c
@@ -0,0 +1,73 @@
+/* vi: set ts=4 :
+ * 
+ * bbsh - busybox shell
+ *
+ * Copyright 2006 Rob Landley <rob@landley.net>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+// Handle embedded NUL bytes in the command line.
+
+#include <busybox.h>
+
+static int handle(char *command)
+{
+	int argc=0;
+	char *argv[10], *start = command;
+
+	// Parse command into argv[]
+	for (;;) {
+		char *end;
+
+		// Skip leading whitespace and detect EOL.
+		while(isspace(*start)) start++;
+		if(!*start || *start=='#') break;
+
+		// Grab next word.  (Add dequote and envvar logic here)
+		end=start;
+		while(*end && !isspace(*end)) end++;
+		argv[argc++]=xstrndup(start,end-start);
+		start=end;
+	}
+	argv[argc]=0;
+
+	if (!argc) return 0;
+	if (argc==2 && !strcmp(argv[0],"cd")) chdir(argv[1]);
+	else if(!strcmp(argv[0],"exit")) exit(argc>1 ? atoi(argv[1]) : 0); 
+	else {
+		int status;
+		pid_t pid=fork();
+		if(!pid) {
+			run_applet_by_name(argv[0],argc,argv);
+			execvp(argv[0],argv);
+			printf("No %s",argv[0]);
+			exit(1);
+		} else waitpid(pid, &status, 0);
+	}
+	while(argc) free(argv[--argc]);
+
+	return 0;
+}
+
+int bbsh_main(int argc, char *argv[])
+{
+	char *command=NULL;
+	FILE *f;
+
+	bb_getopt_ulflags(argc, argv, "c:", &command);
+
+	f = argv[optind] ? xfopen(argv[optind],"r") : NULL;
+	if (command) handle(command);
+	else {
+		unsigned cmdlen=0;
+		for (;;) {
+			if(!f) putchar('$');
+			if(1 > getline(&command,&cmdlen,f ? : stdin)) break;
+			handle(command);
+		}
+		if (ENABLE_FEATURE_CLEAN_UP) free(command);
+	}
+		
+	return 1;
+}