/* A number of applets need to open a file for reading, where the filename
* is a command line arg. Since often that arg is '-' (meaning stdin),
* we avoid testing everywhere by consolidating things in this routine.
- *
- * Note: We also consider "" to main stdin (for 'cmp' at least).
*/
-#include <stdio.h>
-#include <sys/stat.h>
-#include <libbb.h>
+#include "libbb.h"
-FILE *bb_wfopen_input(const char *filename)
+FILE* FAST_FUNC fopen_or_warn_stdin(const char *filename)
{
FILE *fp = stdin;
- if ((filename != bb_msg_standard_input)
- && filename[0] && ((filename[0] != '-') || filename[1])
+ if (filename != bb_msg_standard_input
+ && NOT_LONE_DASH(filename)
) {
- fp = bb_wfopen(filename, "r");
+ fp = fopen_or_warn(filename, "r");
}
-
return fp;
}
+
+FILE* FAST_FUNC xfopen_stdin(const char *filename)
+{
+ FILE *fp = fopen_or_warn_stdin(filename);
+ if (fp)
+ return fp;
+ xfunc_die(); /* We already output an error message. */
+}
+
+int FAST_FUNC open_or_warn_stdin(const char *filename)
+{
+ int fd = STDIN_FILENO;
+
+ if (filename != bb_msg_standard_input
+ && NOT_LONE_DASH(filename)
+ ) {
+ fd = open_or_warn(filename, O_RDONLY);
+ }
+
+ return fd;
+}