Converted msgstats macros & Co. to functions and added range checks

[mmh] / sbr / seq_msgstats.c

diff --git a/sbr/seq_msgstats.c b/sbr/seq_msgstats.c
new file mode 100644 (file)
index 0000000..40b8474
--- /dev/null
+++ b/sbr/seq_msgstats.c
@@ -0,0 +1,189 @@
+/*
+** seq_msgstats -- message and sequence manipulation and folder attributes
+**
+** (These functions had once been macros in h/mh.h)
+*/
+
+#include <h/mh.h>
+
+static void
+assert_msg_range(struct msgs *mp, int msgnum)
+{
+       if (msgnum < mp->lowoff || msgnum > mp->hghoff) {
+               adios(NULL, "Bug: message out of bounds");
+       }
+}
+
+
+void
+add_sequence(struct msgs *mp, int seqnum, int msgnum)
+{
+       assert_msg_range(mp, msgnum);
+       mp->msgstats[msgnum - mp->lowoff] |= (1 << (FFATTRSLOT + seqnum));
+}
+
+void
+clear_msg_flags(struct msgs *mp, int msgnum)
+{
+       assert_msg_range(mp, msgnum);
+       mp->msgstats[msgnum - mp->lowoff] = 0;
+}
+
+void
+clear_sequence(struct msgs *mp, int seqnum, int msgnum)
+{
+       assert_msg_range(mp, msgnum);
+       mp->msgstats[msgnum - mp->lowoff] &= ~(1 << (FFATTRSLOT + seqnum));
+}
+
+void
+copy_msg_flags(struct msgs *mp, int dstmsg, int srcmsg)
+{
+       assert_msg_range(mp, srcmsg);
+       assert_msg_range(mp, dstmsg);
+       mp->msgstats[dstmsg - mp->lowoff] = mp->msgstats[srcmsg - mp->lowoff];
+}
+
+seqset_t
+does_exist(struct msgs *mp, int msgnum)
+{
+       assert_msg_range(mp, msgnum);
+       return mp->msgstats[msgnum - mp->lowoff] & EXISTS;
+}
+
+void
+get_msg_flags(struct msgs *mp, seqset_t *dst, int msgnum)
+{
+       assert_msg_range(mp, msgnum);
+       *dst = mp->msgstats[msgnum - mp->lowoff];
+}
+
+seqset_t
+in_sequence(struct msgs *mp, int seqnum, int msgnum)
+{
+       assert_msg_range(mp, msgnum);
+       return mp->msgstats[msgnum - mp->lowoff] & (1 << (FFATTRSLOT + seqnum));
+}
+
+seqset_t
+is_selected(struct msgs *mp, int msgnum)
+{
+       assert_msg_range(mp, msgnum);
+       return mp->msgstats[msgnum - mp->lowoff] & SELECTED;
+}
+
+seqset_t
+is_unseen(struct msgs *mp, int msgnum)
+{
+       assert_msg_range(mp, msgnum);
+       return mp->msgstats[msgnum - mp->lowoff] & SELECT_UNSEEN;
+}
+
+void
+set_exists(struct msgs *mp, int msgnum)
+{
+       assert_msg_range(mp, msgnum);
+       mp->msgstats[msgnum - mp->lowoff] |= EXISTS;
+}
+
+void
+set_msg_flags(struct msgs *mp, seqset_t *src, int msgnum)
+{
+       assert_msg_range(mp, msgnum);
+       mp->msgstats[msgnum - mp->lowoff] = *src;
+}
+
+void
+set_selected(struct msgs *mp, int msgnum)
+{
+       assert_msg_range(mp, msgnum);
+       mp->msgstats[msgnum - mp->lowoff] |= SELECTED;
+}
+
+void
+set_unseen(struct msgs *mp, int msgnum)
+{
+       assert_msg_range(mp, msgnum);
+       mp->msgstats[msgnum - mp->lowoff] |= SELECT_UNSEEN;
+}
+
+void
+unset_exists(struct msgs *mp, int msgnum)
+{
+       assert_msg_range(mp, msgnum);
+       mp->msgstats[msgnum - mp->lowoff] &= ~EXISTS;
+}
+
+void
+unset_selected(struct msgs *mp, int msgnum)
+{
+       assert_msg_range(mp, msgnum);
+       mp->msgstats[msgnum - mp->lowoff] &= ~SELECTED;
+}
+
+void
+unset_unseen(struct msgs *mp, int msgnum)
+{
+       assert_msg_range(mp, msgnum);
+       mp->msgstats[msgnum - mp->lowoff] &= ~SELECT_UNSEEN;
+}
+
+
+/*
+**  private/public sequences
+*/
+
+int
+is_seq_private(struct msgs *mp, int seqnum)
+{
+       return mp->attrstats & (1 << (FFATTRSLOT + seqnum));
+}
+
+void
+make_seq_public(struct msgs *mp, int seqnum)
+{
+       mp->attrstats &= ~(1 << (FFATTRSLOT + seqnum));
+}
+void
+make_seq_private(struct msgs *mp, int seqnum)
+{
+       mp->attrstats |= (1 << (FFATTRSLOT + seqnum));
+}
+void
+make_all_public(struct msgs *mp)
+{
+       mp->attrstats = 0;
+}
+
+
+/*
+** folder attributes
+*/
+
+void
+clear_folder_flags(struct msgs *mp)
+{
+       mp->msgflags = 0;
+}
+
+int
+is_readonly(struct msgs *mp)
+{
+       return mp->msgflags & READONLY;
+}
+void
+set_readonly(struct msgs *mp)
+{
+       mp->msgflags |= READONLY;
+}
+
+int
+other_files(struct msgs *mp)
+{
+       return mp->msgflags & OTHERS;
+}
+void
+set_other_files(struct msgs *mp)
+{
+       mp->msgflags |= OTHERS;
+}