1 files changed, 145 insertions, 0 deletions
diff --git a/contrib/nvi/ex/ex_display.c b/contrib/nvi/ex/ex_display.c
new file mode 100644
index 0000000..7531517
--- /dev/null
+++ b/contrib/nvi/ex/ex_display.c
@@ -0,0 +1,145 @@
+/*-
+ * Copyright (c) 1992, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ * Copyright (c) 1992, 1993, 1994, 1995, 1996
+ *	Keith Bostic.  All rights reserved.
+ *
+ * See the LICENSE file for redistribution information.
+ */
+
+#include "config.h"
+
+#ifndef lint
+static const char sccsid[] = "@(#)ex_display.c	10.12 (Berkeley) 4/10/96";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/queue.h>
+
+#include <bitstring.h>
+#include <ctype.h>
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "../common/common.h"
+#include "tag.h"
+
+static int	bdisplay __P((SCR *));
+static void	db __P((SCR *, CB *, CHAR_T *));
+
+/*
+ * ex_display -- :display b[uffers] | c[onnections] | s[creens] | t[ags]
+ *
+ *	Display cscope connections, buffers, tags or screens.
+ *
+ * PUBLIC: int ex_display __P((SCR *, EXCMD *));
+ */
+int
+ex_display(sp, cmdp)
+	SCR *sp;
+	EXCMD *cmdp;
+{
+	switch (cmdp->argv[0]->bp[0]) {
+	case 'b':
+#undef	ARG
+#define	ARG	"buffers"
+		if (cmdp->argv[0]->len >= sizeof(ARG) ||
+		    memcmp(cmdp->argv[0]->bp, ARG, cmdp->argv[0]->len))
+			break;
+		return (bdisplay(sp));
+	case 'c':
+#undef	ARG
+#define	ARG	"connections"
+		if (cmdp->argv[0]->len >= sizeof(ARG) ||
+		    memcmp(cmdp->argv[0]->bp, ARG, cmdp->argv[0]->len))
+			break;
+		return (cscope_display(sp));
+	case 's':
+#undef	ARG
+#define	ARG	"screens"
+		if (cmdp->argv[0]->len >= sizeof(ARG) ||
+		    memcmp(cmdp->argv[0]->bp, ARG, cmdp->argv[0]->len))
+			break;
+		return (ex_sdisplay(sp));
+	case 't':
+#undef	ARG
+#define	ARG	"tags"
+		if (cmdp->argv[0]->len >= sizeof(ARG) ||
+		    memcmp(cmdp->argv[0]->bp, ARG, cmdp->argv[0]->len))
+			break;
+		return (ex_tag_display(sp));
+	}
+	ex_emsg(sp, cmdp->cmd->usage, EXM_USAGE);
+	return (1);
+}
+
+/*
+ * bdisplay --
+ *
+ *	Display buffers.
+ */
+static int
+bdisplay(sp)
+	SCR *sp;
+{
+	CB *cbp;
+
+	if (sp->gp->cutq.lh_first == NULL && sp->gp->dcbp == NULL) {
+		msgq(sp, M_INFO, "123|No cut buffers to display");
+		return (0);
+	}
+
+	/* Display regular cut buffers. */
+	for (cbp = sp->gp->cutq.lh_first; cbp != NULL; cbp = cbp->q.le_next) {
+		if (isdigit(cbp->name))
+			continue;
+		if (cbp->textq.cqh_first != (void *)&cbp->textq)
+			db(sp, cbp, NULL);
+		if (INTERRUPTED(sp))
+			return (0);
+	}
+	/* Display numbered buffers. */
+	for (cbp = sp->gp->cutq.lh_first; cbp != NULL; cbp = cbp->q.le_next) {
+		if (!isdigit(cbp->name))
+			continue;
+		if (cbp->textq.cqh_first != (void *)&cbp->textq)
+			db(sp, cbp, NULL);
+		if (INTERRUPTED(sp))
+			return (0);
+	}
+	/* Display default buffer. */
+	if ((cbp = sp->gp->dcbp) != NULL)
+		db(sp, cbp, "default buffer");
+	return (0);
+}
+
+/*
+ * db --
+ *	Display a buffer.
+ */
+static void
+db(sp, cbp, name)
+	SCR *sp;
+	CB *cbp;
+	CHAR_T *name;
+{
+	CHAR_T *p;
+	GS *gp;
+	TEXT *tp;
+	size_t len;
+
+	gp = sp->gp;
+	(void)ex_printf(sp, "********** %s%s\n",
+	    name == NULL ? KEY_NAME(sp, cbp->name) : name,
+	    F_ISSET(cbp, CB_LMODE) ? " (line mode)" : " (character mode)");
+	for (tp = cbp->textq.cqh_first;
+	    tp != (void *)&cbp->textq; tp = tp->q.cqe_next) {
+		for (len = tp->len, p = tp->lb; len--; ++p) {
+			(void)ex_puts(sp, KEY_NAME(sp, *p));
+			if (INTERRUPTED(sp))
+				return;
+		}
+		(void)ex_puts(sp, "\n");
+	}
+}