wip: large changes

src/shell.c

@@ -0,0 +1,62 @@
+// SPDX-License-Identifier: BSD-3-Clause
+#include <errno.h>
+#include <lib/err.h>
+#include <lib/fs.h>
+#include <sys/stat.h>
+
+int write_shell(char *package, char *license, int year, char *author, char *m)
+{
+	fs_write(package, "\
+#!/bin/sh\n\
+# SPDX-License-Identifier: %s\n\
+#\n\
+# %s\n\
+\n\
+me=$0\n\
+scriptversion=\"1.0.0\"\n\
+\n\
+version=\"$me $scriptversion\n\
+\n\
+Copyright (C) %d %s\n\
+This is free software; you are free to change and redistribute it.\n\
+There is NO WARRANTY, to  the textent permitted by law.\"\n\
+\n\
+usage=\"\\\n\
+Usage: $me [OPTION]...\n\
+%s\n\
+\n\
+Options:\n\
+\n\
+   --help     print this help and exit\n\
+   --version  output version information\"\n\
+\n\
+while [ $# -gt 0 ]; do\n\
+  case $1 in\n\
+    --help) echo \"$usage\"; exit 0;;\n\
+    --version) echo \"$version\"; exit 0;;\n\
+    -*)\n\
+      echo \"$0: Unknwon option '$1'.\" >&2\n\
+      echo \"$0: Try '--help' for more information.\" >&2\n\
+      exit 1 ;;\n\
+  esac\n\
+  shift\n\
+done\n\
+\n\
+echo \"$0: done.\"\n\
+\n\
+# End: %s\
+",
+		 license, m, year, author, m, package);
+	struct stat st;
+
+	if (stat(package, &st) != 0) {
+		fatalfa(errno);
+	}
+
+	mode_t mode = st.st_mode | S_IXUSR;
+
+	if (chmod(package, mode) != 0) {
+		fatalfa(errno);
+	}
+	return 0;
+}