1 files changed, 151 insertions, 0 deletions
diff --git a/textlist.c b/textlist.c
new file mode 100644
index 0000000..fda46eb
--- /dev/null
+++ b/textlist.c
@@ -0,0 +1,151 @@
+/* $Id: textlist.c,v 1.6 2003/04/07 16:27:11 ukai Exp $ */
+#include "textlist.h"
+#include "indep.h"
+#include "Str.h"
+#include <gc.h>
+
+/* General doubly linked list */
+
+ListItem *
+newListItem(void *s, ListItem *n, ListItem *p)
+{
+    ListItem *it;
+    it = New(ListItem);
+    it->ptr = s;
+    it->next = n;
+    it->prev = p;
+    return it;
+}
+
+GeneralList *
+newGeneralList()
+{
+    GeneralList *tl = New(GeneralList);
+    tl->first = tl->last = NULL;
+    tl->nitem = 0;
+    return tl;
+}
+
+void
+pushValue(GeneralList *tl, void *s)
+{
+    ListItem *it;
+    if (s == NULL)
+	return;
+    it = newListItem(s, NULL, tl->last);
+    if (tl->first == NULL) {
+	tl->first = it;
+	tl->last = it;
+	tl->nitem = 1;
+    }
+    else {
+	tl->last->next = it;
+	tl->last = it;
+	tl->nitem++;
+    }
+}
+
+void *
+popValue(GeneralList *tl)
+{
+    ListItem *f;
+
+    if (tl == NULL || tl->first == NULL)
+	return NULL;
+    f = tl->first;
+    tl->first = f->next;
+    if (tl->first)
+	tl->first->prev = NULL;
+    else
+	tl->last = NULL;
+    tl->nitem--;
+    return f->ptr;
+}
+
+void *
+rpopValue(GeneralList *tl)
+{
+    ListItem *f;
+
+    if (tl == NULL || tl->last == NULL)
+	return NULL;
+    f = tl->last;
+    tl->last = f->prev;
+    if (tl->last)
+	tl->last->next = NULL;
+    else
+	tl->first = NULL;
+    tl->nitem--;
+    return f->ptr;
+}
+
+void
+delValue(GeneralList *tl, ListItem *it)
+{
+    if (it->prev)
+	it->prev->next = it->next;
+    else
+	tl->first = it->next;
+    if (it->next)
+	it->next->prev = it->prev;
+    else
+	tl->last = it->prev;
+    tl->nitem--;
+}
+
+GeneralList *
+appendGeneralList(GeneralList *tl, GeneralList *tl2)
+{
+    if (tl && tl2) {
+	if (tl2->first) {
+	    if (tl->last) {
+		tl->last->next = tl2->first;
+		tl2->first->prev = tl->last;
+		tl->last = tl2->last;
+		tl->nitem += tl2->nitem;
+	    }
+	    else {
+		tl->first = tl2->first;
+		tl->last = tl2->last;
+		tl->nitem = tl2->nitem;
+	    }
+	}
+	tl2->first = tl2->last = NULL;
+	tl2->nitem = 0;
+    }
+
+    return tl;
+}
+
+
+/* Line text list */
+
+TextLine *
+newTextLine(Str line, int pos)
+{
+    TextLine *lbuf = New(TextLine);
+    if (line)
+	lbuf->line = line;
+    else
+	lbuf->line = Strnew();
+    lbuf->pos = pos;
+    return lbuf;
+}
+
+void
+appendTextLine(TextLineList *tl, Str line, int pos)
+{
+    TextLine *lbuf;
+
+    if (tl->last == NULL) {
+	pushTextLine(tl, newTextLine(Strdup(line), pos));
+    }
+    else {
+	lbuf = tl->last->ptr;
+	if (lbuf->line)
+	    Strcat(lbuf->line, line);
+	else
+	    lbuf->line = line;
+	lbuf->pos += pos;
+    }
+}