151 	struct input_stream *istream;  in new_input_file()  local
153 	istream = emalloc(sizeof(*istream));  in new_input_file()
154 	istream->origin.fname = simplify(name);  in new_input_file()
156 	istream->str = NULL;  in new_input_file()
158 	istream->origin.lineno = 0;  in new_input_file()
159 	istream->F = stream;  in new_input_file()
160 	istream->ptr = istream->end = NULL;  in new_input_file()
161 	return istream;  in new_input_file()
165 free_input_stream(struct input_stream *istream)  in free_input_stream()  argument
167 	if (istream->F) {  in free_input_stream()
168 		if (ferror(istream->F))  in free_input_stream()
170 		if (fileno(istream->F) != STDIN_FILENO)  in free_input_stream()
171 			(void)fclose(istream->F);  in free_input_stream()
173 	free(istream->str);  in free_input_stream()
176 	free(istream);  in free_input_stream()
182 	struct input_stream *istream;  in new_input_string()  local
184 	istream = emalloc(sizeof(*istream));  in new_input_string()
188 	istream->origin = *origin;  in new_input_string()
189 	istream->F = NULL;  in new_input_string()
190 	istream->ptr = istream->str = str;  in new_input_string()
191 	istream->end = str + strlen(str);  in new_input_string()
192 	return istream;  in new_input_string()