From d8362e66ccbfdd6d2378363c0f82de9b2d005a68 Mon Sep 17 00:00:00 2001
From: Andrew Cady <d@jerkface.net>
Date: Mon, 2 Sep 2024 11:40:53 -0400
Subject: termux-sms-pipe

---
 src/termux-sms-pipe | 129 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100755 src/termux-sms-pipe

diff --git a/src/termux-sms-pipe b/src/termux-sms-pipe
new file mode 100755
index 0000000..3d87726
--- /dev/null
+++ b/src/termux-sms-pipe
@@ -0,0 +1,129 @@
+#!/bin/bash
+set -e
+shopt -s lastpipe
+
+PS4=$'+\t${LINENO@A}\t'
+
+# Usage: termux-sms-list [-d] [-l limit] [-n] [-o offset] [-t type] [-c] [-f number]
+# List SMS messages.
+#   -l limit   limit in retrieved sms list (default: 10)
+#   -o offset  offset in sms list (default: 0)
+#   -t type    the type of messages to list (default: all):
+#              all|inbox|sent|draft|outbox
+#   -c         conversation list (unique item per conversation)
+#   -f number  the number for locate messages
+#   -n         (obsolete) show phone numbers
+#   -d         (obsolete) show dates when messages were created
+
+poll_sms()
+{
+        declare -g new=
+        declare -i r=0 i
+        declare finished= restarted=
+        for (( i=10 ; ; i*=10 ))
+        do
+                termux-sms-list -l $i | jq -rc '.[] | "\(._id) \(.)"' |
+                while read -t 5 -r id json || r=$?
+                do
+                        if (( r > 128 ))
+                        then
+                                if [ ! "$restarted" ]
+                                then
+                                        restarted=y
+                                        termux-api-start
+                                        continue
+                                else
+                                        break 2
+                                fi
+                        elif (( r != 0 ))
+                        then
+                                break
+                        fi
+                        if ! [ "$last_seen_id" ]
+                        then
+                                last_seen_id=$(( $id - 1 ))
+                                finished=y
+                        fi
+                        if (( id <= last_seen_id + 1 ))
+                        then
+                                finished=y
+                        fi
+                        if (( id > last_seen_id ))
+                        then
+                                sms[$id]=$json
+                                new=y
+                        fi
+                done
+                if [ "$finished" ]
+                then
+                        break
+                fi
+        done
+}
+
+poller_loop()
+{
+        longer=60
+        while true
+        do
+                echo -n '*' >&2
+                poll_sms
+                echo -ne '\b' >&2
+                if [ "$new" ]
+                then
+                        echo >&2
+                        for (( i=$last_seen_id + 1; ; ++i ))
+                        do
+                                [ "${sms[$i]}" ] || break
+                                printf '%d ' "$i" >&2
+                                printf '%s\n' "${sms[$i]}"
+                                last_seen_id=$i
+                                if [ "$USE_LAST_SEEN_FILE" ]
+                                then
+                                        echo "$last_seen_id" >"$last_seen_file"
+                                fi
+                        done
+                        Sleep 5
+                        longer=5
+                else
+                        Sleep $longer
+                        if (( longer < 60 ))
+                        then
+                                let longer++
+                        fi
+                fi
+        done
+}
+
+Sleep()
+{
+        echo -n . >&2
+        sleep "$@" &&
+        echo -ne '\b'
+}
+
+if ! [ "$NO_LAST_SEEN_FILE" ]
+then
+        USE_LAST_SEEN_FILE=y
+fi
+
+libdir=~/.local/lib/termux-sms-pipe
+mkdir -p "$libdir"
+
+last_seen_file=$libdir/last-seen-sms-id
+
+if (( $# == 0 ))
+then
+        if [ "$USE_LAST_SEEN_FILE" -a -e "$last_seen_file" ]
+        then
+                exec {LAST_SEEN_FILE_FD}< "$last_seen_file"
+                flock -n $LAST_SEEN_FILE_FD
+                read last_seen_id < "$last_seen_file"
+        else
+                last_seen_id=
+        fi
+else
+        last_seen_id=$1
+fi
+
+poller_loop
-- 
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