From e55d43849551c65431748e7a64fc11595b7fd000 Mon Sep 17 00:00:00 2001
From: Case Duckworth
Date: Tue, 2 Jun 2020 21:51:24 -0500
Subject: Add history file

I added a history file at $XDG_DATA_HOME/bollux/history.
Its format is of the form
<date %FT%T>	<URL>	<TITLE>
the date is generated with the printf trick.  I should probably be doing
version checking or at least say we require bash 4+.

The code to get the title of the page is pretty gross.  Basically I have
to run the content of the pipeline through like, two times? A read loop.
Check out ll. 333-348 to see how weird it is.
---
 bollux | 29 ++++++++++++++++++++++-------
 1 file changed, 22 insertions(+), 7 deletions(-)

diff --git a/bollux b/bollux
index 7ed4ae1..68eade9 100755
--- a/bollux
+++ b/bollux
@@ -113,6 +113,8 @@ bollux_config() {
 	: "${BOLLUX_LESSKEY:=/tmp/bollux-lesskey}" # where to store binds
 	: "${BOLLUX_PAGESRC:=/tmp/bollux-src}"     # where to save the page source
 	: "${BOLLUX_URL:=}"                        # start url
+	: "${BOLLUX_DATADIR:=${XDG_DATA_DIR:-$HOME/.local/share}/bollux}"
+	BOLLUX_HISTFILE="$BOLLUX_DATADIR/history" # where to store the history
 	## typesetting
 	: "${T_MARGIN:=4}"      # left and right margin
 	: "${T_WIDTH:=0}"       # width of the viewport -- 0 = get term width
@@ -323,15 +325,26 @@ handle_response() {
 	case "$code" in
 	1*)
 		REDIRECTS=0
-		run history_append "$URL"
+		run history_append "$URL" "$meta"
 		run prompt "$meta" QUERY
 		# shellcheck disable=2153
 		run blastoff "?$QUERY"
 		;;
 	2*)
 		REDIRECTS=0
-		run history_append "$URL"
-		run display "$meta"
+		# read ahead to find a title
+		while read -r; do
+			printf -v pretitle "%s\n" "$REPLY"
+			if [[ "$REPLY" =~ ^#[[:space:]]*(.*) ]]; then
+				title="${BASH_REMATCH[1]}"
+				break
+			fi
+		done
+		run history_append "$URL" "$title"
+		{
+			printf '%s' "$pretitle"
+			while read -r; do printf '%s\n' "$REPLY"; done
+		} | run display "$meta"
 		;;
 	3*)
 		((REDIRECTS += 1))
@@ -653,12 +666,14 @@ download() {
 history_init() {
 	declare -a HISTORY # history is kept in an array
 	HN=0               # position of history in the array
+	run mkdir -p "${BOLLUX_HISTFILE%/*}"
 }
 
-history_append() { # history_append URL
+history_append() { # history_append URL TITLE
 	BOLLUX_URL="$1"
+	# date/time, url, title (best guess)
+	run printf '%(%FT%T)T\t%s\t%s\n' -1 "$1" "$2" >>"$BOLLUX_HISTFILE"
 	HISTORY[$HN]="$BOLLUX_URL"
-	log d "HN=$HN HISTORY: ${HISTORY[*]}"
 	((HN += 1))
 }
 
@@ -670,7 +685,7 @@ history_back() {
 		log e "Beginning of history."
 		return 1
 	fi
-	blastoff "${HISTORY[$HN]}"
+	run blastoff "${HISTORY[$HN]}"
 }
 history_forward() {
 	log d "HN=$HN"
@@ -679,7 +694,7 @@ history_forward() {
 		log e "End of history."
 		return 1
 	fi
-	blastoff "${HISTORY[$HN]}"
+	run blastoff "${HISTORY[$HN]}"
 }
 
 if [[ "${BASH_SOURCE[0]}" == "$0" ]]; then
-- 
cgit 1.4.1-21-gabe81