1 files changed, 62 insertions, 0 deletions
diff --git a/include/sudo_lbuf.h b/include/sudo_lbuf.h
new file mode 100644
index 0000000..c1b9fb4
--- /dev/null
+++ b/include/sudo_lbuf.h
@@ -0,0 +1,62 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2007, 2010, 2011, 2013-2015, 2023
+ *	Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef SUDO_LBUF_H
+#define SUDO_LBUF_H
+
+/*
+ * Line buffer struct.
+ */
+struct sudo_lbuf {
+    int (*output)(const char *);
+    char *buf;
+    const char *continuation;
+    unsigned int indent;
+    unsigned int len;
+    unsigned int size;
+    unsigned short cols;
+    unsigned short error;
+};
+
+typedef int (*sudo_lbuf_output_t)(const char *);
+
+/* Flags for sudo_lbuf_append_esc() */
+#define LBUF_ESC_CNTRL	0x01
+#define LBUF_ESC_BLANK	0x02
+#define LBUF_ESC_QUOTE	0x04
+
+sudo_dso_public void sudo_lbuf_init_v1(struct sudo_lbuf *lbuf, sudo_lbuf_output_t output, unsigned int indent, const char *continuation, int cols);
+sudo_dso_public void sudo_lbuf_destroy_v1(struct sudo_lbuf *lbuf);
+sudo_dso_public bool sudo_lbuf_append_v1(struct sudo_lbuf *lbuf, const char * restrict fmt, ...) sudo_printflike(2, 3);
+sudo_dso_public bool sudo_lbuf_append_esc_v1(struct sudo_lbuf *lbuf, int flags, const char * restrict fmt, ...) sudo_printflike(3, 4);
+sudo_dso_public bool sudo_lbuf_append_quoted_v1(struct sudo_lbuf *lbuf, const char *set, const char * restrict fmt, ...) sudo_printflike(3, 4);
+sudo_dso_public void sudo_lbuf_print_v1(struct sudo_lbuf *lbuf);
+sudo_dso_public bool sudo_lbuf_error_v1(struct sudo_lbuf *lbuf);
+sudo_dso_public void sudo_lbuf_clearerr_v1(struct sudo_lbuf *lbuf);
+
+#define sudo_lbuf_init(_a, _b, _c, _d, _e) sudo_lbuf_init_v1((_a), (_b), (_c), (_d), (_e))
+#define sudo_lbuf_destroy(_a) sudo_lbuf_destroy_v1((_a))
+#define sudo_lbuf_append sudo_lbuf_append_v1
+#define sudo_lbuf_append_esc sudo_lbuf_append_esc_v1
+#define sudo_lbuf_append_quoted sudo_lbuf_append_quoted_v1
+#define sudo_lbuf_print(_a) sudo_lbuf_print_v1((_a))
+#define sudo_lbuf_error(_a) sudo_lbuf_error_v1((_a))
+#define sudo_lbuf_clearerr(_a) sudo_lbuf_clearerr_v1((_a))
+
+#endif /* SUDO_LBUF_H */