Initial revision

1 files changed, 72 insertions, 0 deletions

diff --git a/edit-null.c b/edit-null.c
new file mode 100644
index 0000000..ea6c5db
--- /dev/null
+++ b/edit-null.c
@@ -0,0 +1,72 @@
+#include "rc.h"
+
+#include <errno.h>
+
+#include <sys/types.h>
+
+#include "edit.h"
+
+bool editing = 0;
+
+void *edit_init(int fd) {
+	/* this function deliberately left blank */
+	return NULL;
+}
+
+char *edit_alloc(void *cookie, int *count) {
+	char *buf;
+	int size, used;
+	ssize_t r;
+
+	used = 0;
+	size = 1;
+	buf = ealloc(size + 1); /* leave room for terminating \0 */
+	do {
+		if (used >= size) { /* >= leaves room for terminating \0 */
+			size = size * 2;
+			buf = erealloc(buf, size);
+		}
+		do {
+			r = rc_read(0, buf + used, size - used);
+			sigchk();
+			if (r == -1)
+				switch (errno) {
+				case EAGAIN:
+					if (!makeblocking(0))
+						panic("not O_NONBLOCK");
+					errno = EINTR;
+					break;
+				case EIO:
+					if (makesamepgrp(0))
+						errno = EINTR;
+					else
+						errno = EIO;
+					break;
+				}
+		} while (r < 0 && errno == EINTR);
+
+		if (r == 0)
+			return NULL;
+
+		used += r;
+		buf[used] = '\0';
+	} while (strchr(buf, '\n') == NULL);
+
+	*count = used;
+	if (used)
+		return buf;
+	else
+		return NULL;
+}
+
+void edit_prompt(void *cookie, char *prompt) {
+	fprint(2, "%s", prompt);
+}
+
+void edit_free(void *buffer) {
+	efree(buffer);
+}
+
+void edit_end(void *cookie) {
+	/* this function deliberately left blank */
+}