1 files changed, 133 insertions, 0 deletions
diff --git a/lib/dpkg/trignote.c b/lib/dpkg/trignote.c
new file mode 100644
index 0000000..957e808
--- /dev/null
+++ b/lib/dpkg/trignote.c
@@ -0,0 +1,133 @@
+/*
+ * libdpkg - Debian packaging suite library routines
+ * trignote.c - trigger note handling
+ *
+ * Copyright © 2007 Canonical Ltd
+ * Written by Ian Jackson <ijackson@chiark.greenend.org.uk>
+ * Copyright © 2008-2014 Guillem Jover <guillem@debian.org>
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <compat.h>
+
+#include <string.h>
+
+#include <dpkg/dpkg.h>
+#include <dpkg/dpkg-db.h>
+#include <dpkg/pkg.h>
+#include <dpkg/pkg-list.h>
+#include <dpkg/dlist.h>
+#include <dpkg/triglib.h>
+
+/*
+ * Note: This is also called from fields.c where *pend is a temporary!
+ *
+ * trig is not copied!
+ */
+bool
+trig_note_pend_core(struct pkginfo *pend, const char *trig)
+{
+	struct trigpend *tp;
+
+	for (tp = pend->trigpend_head; tp; tp = tp->next)
+		if (strcmp(tp->name, trig) == 0)
+			return false;
+
+	tp = nfmalloc(sizeof(*tp));
+	tp->name = trig;
+	tp->next = pend->trigpend_head;
+	pend->trigpend_head = tp;
+
+	return true;
+}
+
+/*
+ * trig is not copied!
+ *
+ * @retval true  For done.
+ * @retval false For already noted.
+ */
+bool
+trig_note_pend(struct pkginfo *pend, const char *trig)
+{
+	if (!trig_note_pend_core(pend, trig))
+		return false;
+
+	if (pend->trigaw.head)
+		pkg_set_status(pend, PKG_STAT_TRIGGERSAWAITED);
+	else
+		pkg_set_status(pend, PKG_STAT_TRIGGERSPENDING);
+
+	return true;
+}
+
+/*
+ * Note: This is called also from fields.c where *aw is a temporary
+ * but pend is from pkg_hash_find()!
+ *
+ * @retval true  For done.
+ * @retval false For already noted.
+ */
+bool
+trig_note_aw(struct pkginfo *pend, struct pkginfo *aw)
+{
+	struct trigaw *ta;
+
+	/* We search through aw's list because that's probably shorter. */
+	for (ta = aw->trigaw.head; ta; ta = ta->sameaw.next)
+		if (ta->pend == pend)
+			return false;
+
+	ta = nfmalloc(sizeof(*ta));
+	ta->aw = aw;
+	ta->pend = pend;
+	ta->samepend_next = pend->othertrigaw_head;
+	pend->othertrigaw_head = ta;
+	LIST_LINK_TAIL_PART(aw->trigaw, ta, sameaw);
+
+	return true;
+}
+
+static struct pkg_list *trig_awaited_pend_head;
+
+void
+trig_awaited_pend_enqueue(struct pkginfo *pend)
+{
+	struct pkg_list *tp;
+
+	for (tp = trig_awaited_pend_head; tp; tp = tp->next)
+		if (tp->pkg == pend)
+			return;
+
+	pkg_list_prepend(&trig_awaited_pend_head, pend);
+}
+
+void
+trig_awaited_pend_foreach(trig_awaited_pend_foreach_func *func)
+{
+	struct pkg_list *tp;
+
+	for (tp = trig_awaited_pend_head; tp; tp = tp->next)
+		if (!tp->pkg->trigpend_head)
+			func(tp->pkg);
+}
+
+void
+trig_awaited_pend_free(void)
+{
+	pkg_list_free(trig_awaited_pend_head);
+	trig_awaited_pend_head = NULL;
+}