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-rw-r--r--Src/Zle/zle_move.c502
1 files changed, 502 insertions, 0 deletions
diff --git a/Src/Zle/zle_move.c b/Src/Zle/zle_move.c
new file mode 100644
index 000000000..8ed4c657a
--- /dev/null
+++ b/Src/Zle/zle_move.c
@@ -0,0 +1,502 @@
+/*
+ * zle_move.c - editor movement
+ *
+ * This file is part of zsh, the Z shell.
+ *
+ * Copyright (c) 1992-1997 Paul Falstad
+ * All rights reserved.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and to distribute modified versions of this software for any
+ * purpose, provided that the above copyright notice and the following
+ * two paragraphs appear in all copies of this software.
+ *
+ * In no event shall Paul Falstad or the Zsh Development Group be liable
+ * to any party for direct, indirect, special, incidental, or consequential
+ * damages arising out of the use of this software and its documentation,
+ * even if Paul Falstad and the Zsh Development Group have been advised of
+ * the possibility of such damage.
+ *
+ * Paul Falstad and the Zsh Development Group specifically disclaim any
+ * warranties, including, but not limited to, the implied warranties of
+ * merchantability and fitness for a particular purpose.  The software
+ * provided hereunder is on an "as is" basis, and Paul Falstad and the
+ * Zsh Development Group have no obligation to provide maintenance,
+ * support, updates, enhancements, or modifications.
+ *
+ */
+
+#include "zle.mdh"
+#include "zle_move.pro"
+
+static vimarkcs[27], vimarkline[27];
+
+/**/
+void
+beginningofline(void)
+{
+    int n = zmult;
+
+    if (n < 0) {
+	zmult = -n;
+	endofline();
+	zmult = n;
+	return;
+    }
+    while (n--) {
+	if (cs == 0)
+	    return;
+	if (line[cs - 1] == '\n')
+	    if (!--cs)
+		return;
+	while (cs && line[cs - 1] != '\n')
+	    cs--;
+    }
+}
+
+/**/
+void
+endofline(void)
+{
+    int n = zmult;
+
+    if (n < 0) {
+	zmult = -n;
+	beginningofline();
+	zmult = n;
+	return;
+    }
+    while (n--) {
+	if (cs >= ll) {
+	    cs = ll;
+	    return;
+	}
+	if (line[cs] == '\n')
+	    if (++cs == ll)
+		return;
+	while (cs != ll && line[cs] != '\n')
+	    cs++;
+    }
+}
+
+/**/
+void
+beginningoflinehist(void)
+{
+    int n = zmult;
+
+    if (n < 0) {
+	zmult = -n;
+	endoflinehist();
+	zmult = n;
+	return;
+    }
+    while (n) {
+	if (cs == 0)
+	    break;
+	if (line[cs - 1] == '\n')
+	    if (!--cs)
+		break;
+	while (cs && line[cs - 1] != '\n')
+	    cs--;
+	n--;
+    }
+    if (n) {
+	int m = zmult;
+
+	zmult = n;
+	uphistory();
+	zmult = m;
+	cs = 0;
+    }
+}
+
+/**/
+void
+endoflinehist(void)
+{
+    int n = zmult;
+
+    if (n < 0) {
+	zmult = -n;
+	beginningoflinehist();
+	zmult = n;
+	return;
+    }
+    while (n) {
+	if (cs >= ll) {
+	    cs = ll;
+	    break;
+	}
+	if (line[cs] == '\n')
+	    if (++cs == ll)
+		break;
+	while (cs != ll && line[cs] != '\n')
+	    cs++;
+	n--;
+    }
+    if (n) {
+	int m = zmult;
+
+	zmult = n;
+	downhistory();
+	zmult = m;
+    }
+}
+
+/**/
+void
+forwardchar(void)
+{
+    cs += zmult;
+    if (cs > ll)
+	cs = ll;
+    if (cs < 0)
+	cs = 0;
+}
+
+/**/
+void
+backwardchar(void)
+{
+    cs -= zmult;
+    if (cs > ll)
+	cs = ll;
+    if (cs < 0)
+	cs = 0;
+}
+
+/**/
+void
+setmarkcommand(void)
+{
+    mark = cs;
+}
+
+/**/
+void
+exchangepointandmark(void)
+{
+    int x;
+
+    x = mark;
+    mark = cs;
+    cs = x;
+    if (cs > ll)
+	cs = ll;
+}
+
+/**/
+void
+vigotocolumn(void)
+{
+    int x, y;
+
+    findline(&x, &y);
+    if (zmult >= 0)
+	cs = x + zmult - (zmult > 0);
+    else
+	cs = y + zmult;
+    if (cs > y)
+	cs = y;
+    if (cs < x)
+	cs = x;
+}
+
+/**/
+void
+vimatchbracket(void)
+{
+    int ocs = cs, dir, ct;
+    unsigned char oth, me;
+
+  otog:
+    if (cs == ll || line[cs] == '\n') {
+	feep();
+	cs = ocs;
+	return;
+    }
+    switch (me = line[cs]) {
+    case '{':
+	dir = 1;
+	oth = '}';
+	break;
+    case /*{*/ '}':
+	virangeflag = -virangeflag;
+	dir = -1;
+	oth = '{'; /*}*/
+	break;
+    case '(':
+	dir = 1;
+	oth = ')';
+	break;
+    case ')':
+	virangeflag = -virangeflag;
+	dir = -1;
+	oth = '(';
+	break;
+    case '[':
+	dir = 1;
+	oth = ']';
+	break;
+    case ']':
+	virangeflag = -virangeflag;
+	dir = -1;
+	oth = '[';
+	break;
+    default:
+	cs++;
+	goto otog;
+    }
+    ct = 1;
+    while (cs >= 0 && cs < ll && ct) {
+	cs += dir;
+	if (line[cs] == oth)
+	    ct--;
+	else if (line[cs] == me)
+	    ct++;
+    }
+    if (cs < 0 || cs >= ll) {
+	feep();
+	cs = ocs;
+    } else if(dir > 0 && virangeflag)
+	cs++;
+}
+
+/**/
+void
+viforwardchar(void)
+{
+    int lim = findeol() - invicmdmode();
+    int n = zmult;
+
+    if (n < 0) {
+	zmult = -n;
+	vibackwardchar();
+	zmult = n;
+	return;
+    }
+    if (cs >= lim) {
+	feep();
+	return;
+    }
+    while (n-- && cs < lim)
+	cs++;
+}
+
+/**/
+void
+vibackwardchar(void)
+{
+    int n = zmult;
+
+    if (n < 0) {
+	zmult = -n;
+	viforwardchar();
+	zmult = n;
+	return;
+    }
+    if (cs == findbol()) {
+	feep();
+	return;
+    }
+    while (n--) {
+	cs--;
+	if (cs < 0 || line[cs] == '\n') {
+	    cs++;
+	    break;
+	}
+    }
+}
+
+/**/
+void
+viendofline(void)
+{
+    int oldcs = cs, n = zmult;
+
+    if (n < 1) {
+	feep();
+	return;
+    }
+    while(n--) {
+	if (cs > ll) {
+	    cs = oldcs;
+	    feep();
+	    return;
+	}
+	cs = findeol() + 1;
+    }
+    cs--;
+    lastcol = 1<<30;
+}
+
+/**/
+void
+vibeginningofline(void)
+{
+    cs = findbol();
+}
+
+static int vfindchar, vfinddir, tailadd;
+
+/**/
+void
+vifindnextchar(void)
+{
+    if ((vfindchar = vigetkey()) != -1) {
+	vfinddir = 1;
+	tailadd = 0;
+	virepeatfind();
+    }
+}
+
+/**/
+void
+vifindprevchar(void)
+{
+    if ((vfindchar = vigetkey()) != -1) {
+	vfinddir = -1;
+	tailadd = 0;
+	virepeatfind();
+    }
+}
+
+/**/
+void
+vifindnextcharskip(void)
+{
+    if ((vfindchar = vigetkey()) != -1) {
+	vfinddir = 1;
+	tailadd = -1;
+	virepeatfind();
+    }
+}
+
+/**/
+void
+vifindprevcharskip(void)
+{
+    if ((vfindchar = vigetkey()) != -1) {
+	vfinddir = -1;
+	tailadd = 1;
+	virepeatfind();
+    }
+}
+
+/**/
+void
+virepeatfind(void)
+{
+    int ocs = cs, n = zmult;
+
+    if (!vfinddir) {
+	feep();
+	return;
+    }
+    if (n < 0) {
+	zmult = -n;
+	virevrepeatfind();
+	zmult = n;
+	return;
+    }
+    while (n--) {
+	do
+	    cs += vfinddir;
+	while (cs >= 0 && cs < ll && line[cs] != vfindchar && line[cs] != '\n');
+	if (cs < 0 || cs >= ll || line[cs] == '\n') {
+	    feep();
+	    cs = ocs;
+	    return;
+	}
+    }
+    cs += tailadd;
+    if (vfinddir == 1 && virangeflag)
+	cs++;
+}
+
+/**/
+void
+virevrepeatfind(void)
+{
+    if (zmult < 0) {
+	zmult = -zmult;
+	virepeatfind();
+	zmult = -zmult;
+	return;
+    }
+    vfinddir = -vfinddir;
+    virepeatfind();
+    vfinddir = -vfinddir;
+}
+
+/**/
+void
+vifirstnonblank(void)
+{
+    cs = findbol();
+    while (cs != ll && iblank(line[cs]))
+	cs++;
+}
+
+/**/
+void
+visetmark(void)
+{
+    int ch;
+
+    ch = getkey(0);
+    if (ch < 'a' || ch > 'z') {
+	feep();
+	return;
+    }
+    ch -= 'a';
+    vimarkcs[ch] = cs;
+    vimarkline[ch] = histline;
+}
+
+/**/
+void
+vigotomark(void)
+{
+    int ch;
+
+    ch = getkey(0);
+    if (ch == c)
+	ch = 26;
+    else {
+	if (ch < 'a' || ch > 'z') {
+	    feep();
+	    return;
+	}
+	ch -= 'a';
+    }
+    if (!vimarkline[ch]) {
+	feep();
+	return;
+    }
+    if (curhist != vimarkline[ch]) {
+	char *s;
+
+	remember_edits();
+	if (!(s = qgetevent(vimarkline[ch]))) {
+	    vimarkline[ch] = 0;
+	    feep();
+	    return;
+	}
+	histline = vimarkline[ch];
+	setline(s);
+    }
+    cs = vimarkcs[ch];
+    if (cs > ll)
+	cs = ll;
+}
+
+/**/
+void
+vigotomarkline(void)
+{
+    vigotomark();
+    vifirstnonblank();
+}
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