From 3cb7df56e0204bb8b0799a8317ef5a5f38802c7b Mon Sep 17 00:00:00 2001
From: Hiltjo Posthuma <hiltjo@codemadness.org>
Date: Fri, 26 Nov 2021 12:10:05 +0100
Subject: import sfeed_curses
Import sfeed_curses into sfeed.
The files are based of the commit 8e151ce48b503ad0ff0e24cb1be3bc93d6fbd895
---
README.curses | 176 ++++
minicurses.h | 38 +
sfeed_content | 53 +
sfeed_content.1 | 57 ++
sfeed_curses.1 | 320 ++++++
sfeed_curses.c | 2459 +++++++++++++++++++++++++++++++++++++++++++++++
sfeed_markread | 35 +
sfeed_markread.1 | 47 +
themes/mono.h | 13 +
themes/mono_highlight.h | 15 +
themes/newsboat.h | 13 +
themes/templeos.h | 24 +
12 files changed, 3250 insertions(+)
create mode 100644 README.curses
create mode 100644 minicurses.h
create mode 100755 sfeed_content
create mode 100644 sfeed_content.1
create mode 100644 sfeed_curses.1
create mode 100644 sfeed_curses.c
create mode 100755 sfeed_markread
create mode 100644 sfeed_markread.1
create mode 100644 themes/mono.h
create mode 100644 themes/mono_highlight.h
create mode 100644 themes/newsboat.h
create mode 100644 themes/templeos.h
diff --git a/README.curses b/README.curses
new file mode 100644
index 0000000..f5e61dd
--- /dev/null
+++ b/README.curses
@@ -0,0 +1,176 @@
+sfeed_curses
+------------
+
+sfeed_curses is a curses UI front-end for sfeed.
+
+It shows the TAB-separated feed items in a graphical command-line UI. The
+interface has a look inspired by the mutt mail client. It has a sidebar panel
+for the feeds, a panel with a listing of the items and a small statusbar for
+the selected item/URL. Some functions like searching and scrolling are
+integrated in the interface itself.
+
+
+Build and install
+-----------------
+
+$ make
+# make install
+
+
+Usage
+-----
+
+Like the format programs included in sfeed you can run it like this:
+
+ sfeed_curses ~/.sfeed/feeds/*
+
+... or by reading from stdin:
+
+ sfeed_curses < ~/.sfeed/feeds/xkcd
+
+By default sfeed_curses marks the items of the last day as new/bold. To manage
+read/unread items in a different way a plain-text file with a list of the read
+URLs can be used. To enable this behaviour the path to this file can be
+specified by setting the environment variable $SFEED_URL_FILE to the URL file:
+
+ export SFEED_URL_FILE="$HOME/.sfeed/urls"
+ [ -f "$SFEED_URL_FILE" ] || touch "$SFEED_URL_FILE"
+ sfeed_curses ~/.sfeed/feeds/*
+
+There is a shellscript "sfeed_markread" to process the read and unread items.
+See the man page for more detailed information.
+
+
+Dependencies
+------------
+
+- C compiler (C99).
+- libc (recommended: C99 and POSIX >= 200809).
+- curses (typically ncurses), optional but recommended: but see minicurses.h.
+
+
+Optional dependencies
+---------------------
+
+- POSIX make(1) for Makefile.
+- mandoc for documentation: https://mdocml.bsd.lv/
+
+
+Run-time dependencies
+---------------------
+
+- A (POSIX) shell.
+- A terminal (emulator) supporting UTF-8 and the used capabilities.
+
+
+Optional run-time dependencies
+------------------------------
+
+- xclip for yanking the URL or enclosure. See $SFEED_YANKER to change it.
+- xdg-open, used as a plumber by default. See $SFEED_PLUMBER to change it.
+- awk, used by the sfeed_content and sfeed_markread script.
+ See the ENVIRONMENT VARIABLES section in the man page to change it.
+- lynx, used by the sfeed_content script to convert HTML content.
+ See the ENVIRONMENT VARIABLES section in the man page to change it.
+
+
+OS tested
+---------
+
+- Linux (compilers: clang, gcc, tcc, libc: glibc, musl).
+- OpenBSD (clang, gcc).
+- NetBSD
+- FreeBSD
+- DragonFlyBSD
+- Illumos (OpenIndiana).
+- Windows (cygwin gcc + mintty).
+- HaikuOS
+
+
+Known terminal issues
+---------------------
+
+Below lists some bugs or missing features in terminals that are found while
+testing. Some of them might be fixed already upstream:
+
+- cygwin + mintty: the xterm mouse-encoding of the mouse position is broken for
+ scrolling.
+- HaikuOS terminal: the xterm mouse-encoding of the mouse button number of the
+ middle-button, right-button is incorrect / reversed.
+- putty: the full reset attribute (ESC c, typically `rs1`) does not reset the
+ window title.
+
+
+Color themes
+------------
+
+To change the default theme you can set SFEED_THEME using make or in the
+Makefile or include the a header file in sfeed_curses.c. See also the themes/
+directory.
+
+
+Running custom commands inside the program
+------------------------------------------
+
+Running commands inside the program can be useful for example to sync items or
+mark all items across all feeds as read. It can be comfortable to have a
+keybind for this inside the program to perform a scripted action and then
+reload the feeds by sending the signal SIGHUP.
+
+In the input handling code you can then add a case:
+
+ case 'M':
+ forkexec((char *[]) { "markallread.sh", NULL }, 0);
+ break;
+
+or
+
+ case 'S':
+ forkexec((char *[]) { "syncnews.sh", NULL }, 1);
+ break;
+
+The specified script should be in $PATH or an absolute path.
+
+Example of a `markallread.sh` shellscript to mark all URLs as read:
+
+ #!/bin/sh
+ # mark all items/URLs as read.
+
+ tmp=$(mktemp)
+ (cat ~/.sfeed/urls; cut -f 3 ~/.sfeed/feeds/*) | \
+ awk '!x[$0]++' > "$tmp" &&
+ mv "$tmp" ~/.sfeed/urls &&
+ pkill -SIGHUP sfeed_curses # reload feeds.
+
+Example of a `syncnews.sh` shellscript to update the feeds and reload them:
+
+ #!/bin/sh
+ sfeed_update && pkill -SIGHUP sfeed_curses
+
+
+Open an URL directly in the same terminal
+-----------------------------------------
+
+To open an URL directly in the same terminal using the text-mode lynx browser:
+
+ SFEED_PLUMBER=lynx SFEED_PLUMBER_INTERACTIVE=1 sfeed_curses ~/.sfeed/feeds/*
+
+
+Yank to tmux buffer
+-------------------
+
+This changes the yank command to set the tmux buffer, instead of X11 xclip:
+
+ SFEED_YANKER="tmux set-buffer \`cat\`"
+
+
+License
+-------
+
+ISC, see LICENSE file.
+
+
+Author
+------
+
+Hiltjo Posthuma <hiltjo@codemadness.org>
diff --git a/minicurses.h b/minicurses.h
new file mode 100644
index 0000000..3bc3e8a
--- /dev/null
+++ b/minicurses.h
@@ -0,0 +1,38 @@
+#include <sys/ioctl.h>
+
+#undef OK
+#define OK (0)
+
+const char *clr_eol = "\x1b[K";
+const char *clear_screen = "\x1b[H\x1b[2J";
+const char *cursor_address = "\x1b[%ld;%ldH";
+const char *cursor_normal = "\x1b[?25h"; /* DECTCEM (in)Visible cursor */
+const char *cursor_invisible = "\x1b[?25l"; /* DECTCEM (in)Visible cursor */
+const char *eat_newline_glitch = (void *)1;
+const char *enter_ca_mode = "\x1b[?1049h"; /* smcup */
+const char *exit_ca_mode = "\x1b[?1049l"; /* rmcup */
+const char *save_cursor = "\x1b""7";
+const char *restore_cursor = "\x1b""8";
+const char *exit_attribute_mode = "\x1b[0m";
+const char *enter_bold_mode = "\x1b[1m";
+const char *enter_dim_mode = "\x1b[2m";
+const char *enter_reverse_mode = "\x1b[7m";
+
+int
+setupterm(char *term, int fildes, int *errret)
+{
+ return OK;
+}
+
+char *
+tparm(const char *s, long p1, long p2, ...)
+{
+ static char buf[32];
+
+ if (s == cursor_address) {
+ snprintf(buf, sizeof(buf), s, p1 + 1, p2 + 1);
+ return buf;
+ }
+
+ return (char *)s;
+}
diff --git a/sfeed_content b/sfeed_content
new file mode 100755
index 0000000..2d0ee23
--- /dev/null
+++ b/sfeed_content
@@ -0,0 +1,53 @@
+#!/bin/sh
+# Content viewer for sfeed(5) lines.
+
+# The locale is set to "C" for performance. The input is always UTF-8.
+LC_ALL=C awk -F '\t' '
+function unescape(s) {
+ # use the character "\x01" as a temporary replacement for "\".
+ gsub("\\\\\\\\", "\x01", s);
+ gsub("\\\\n", "\n", s);
+ gsub("\\\\t", "\t", s);
+ gsub("\x01", "\\", s); # restore "\x01" to "\".
+ return s;
+}
+BEGIN {
+ htmlconv = "lynx -stdin -dump " \
+ "-underline_links -image_links " \
+ "-display_charset=\"utf-8\" -assume_charset=\"utf-8\" ";
+}
+{
+ if (previtem)
+ print "\f";
+ previtem = 1;
+
+ print "Title: " $2;
+ if (length($7))
+ print "Author: " $7;
+ if (length($9)) {
+ categories = $9;
+ gsub("\\|", ", ", categories);
+ print "Category: " categories;
+ }
+ if (length($3))
+ print "Link: " $3;
+ if (length($8))
+ print "Enclosure: " $8;
+ if (!length($4))
+ next;
+ print "";
+ if ($5 == "html") {
+ # use the link of the item as the base URL for relative URLs in
+ # HTML content.
+ base = $3;
+ if (length(base)) {
+ gsub("\"", "%22", base); # encode quotes.
+ base = "<base href=\"" base "\"/>\n";
+ }
+ print base unescape($4) | htmlconv;
+ close(htmlconv);
+ } else {
+ print unescape($4);
+ }
+}' "$@" | \
+${PAGER:-less -R}
diff --git a/sfeed_content.1 b/sfeed_content.1
new file mode 100644
index 0000000..a5bc4d4
--- /dev/null
+++ b/sfeed_content.1
@@ -0,0 +1,57 @@
+.Dd July 25, 2021
+.Dt SFEED_CONTENT 1
+.Os
+.Sh NAME
+.Nm sfeed_content
+.Nd view RSS/Atom content
+.Sh SYNOPSIS
+.Nm
+.Op Ar
+.Sh DESCRIPTION
+.Nm
+formats feed data (TSV) from
+.Xr sfeed 1
+from stdin or for each
+.Ar file
+to stdout as plain-text content.
+For HTML content it uses
+.Xr lynx 1
+to convert it to plain-text.
+At the end it uses the pager to view the output.
+The
+.Nm
+script can be used by
+.Xr sfeed_curses 1
+to view content.
+.Sh ENVIRONMENT VARIABLES
+.Bl -tag -width Ds
+.It Ev PAGER
+The pager used to view the content.
+If it is not set it will use "less -R" by default.
+.El
+.Sh EXIT STATUS
+.Ex -std
+.Sh EXAMPLES
+.Bd -literal
+curl -s 'https://codemadness.org/atom_content.xml' | sfeed | sfeed_content
+.Ed
+.Pp
+The output format looks like this:
+.Bd -literal
+Title: The title.
+Author: The line with the author if it is set.
+Category: The line with the categories if it is set.
+Link: The line with the link if it is set.
+Enclosure: The line with the enclosure if it is set.
+
+The content converted to plain-text.
+
+<form feed character> if there are multiple items.
+.Ed
+.Sh SEE ALSO
+.Xr awk 1 ,
+.Xr less 1 ,
+.Xr lynx 1 ,
+.Xr sfeed_curses 1
+.Sh AUTHORS
+.An Hiltjo Posthuma Aq Mt hiltjo@codemadness.org
diff --git a/sfeed_curses.1 b/sfeed_curses.1
new file mode 100644
index 0000000..264b77a
--- /dev/null
+++ b/sfeed_curses.1
@@ -0,0 +1,320 @@
+.Dd August 10, 2021
+.Dt SFEED_CURSES 1
+.Os
+.Sh NAME
+.Nm sfeed_curses
+.Nd curses UI for viewing feed data
+.Sh SYNOPSIS
+.Nm
+.Op Ar
+.Sh DESCRIPTION
+.Nm
+formats feed data (TSV) from
+.Xr sfeed 1
+from stdin or for each
+.Ar file
+into a curses UI.
+If one or more
+.Ar file
+arguments are specified then the basename of the
+.Ar file
+is used as the feed name in the output such as the feeds sidebar.
+The
+.Ar file
+arguments are processed and shown in the specified argument order in the feeds
+sidebar.
+If no
+.Ar file
+arguments are specified then the data is read from stdin and the feed name is
+"stdin" and no sidebar is visible by default in this case.
+.Pp
+Items with a timestamp from the last day compared to the system time at the
+time of loading the feed are marked as new and bold.
+There is also an alternative mode available to mark items as read by matching
+it against a list of URLs from a plain-text file.
+.Pp
+.Nm
+aligns the output.
+Make sure the environment variable
+.Ev LC_CTYPE
+is set to a UTF-8 locale, so it can determine the proper column-width
+per rune, using
+.Xr mbtowc 3
+and
+.Xr wcwidth 3 .
+.Sh KEYBINDS
+.Bl -tag -width Ds
+.It k, ARROW UP
+Go one row up.
+.It j, ARROW DOWN
+Go one row down.
+.It K
+Go one row up and open the item.
+.It J
+Go one row down and open the item.
+.It h, ARROW LEFT
+Focus feeds pane.
+.It l, ARROW RIGHT
+Focus items pane.
+.It TAB
+Cycle focused pane (between feeds and items).
+.It g
+Go to the first row.
+.It G
+Go to the last row.
+.It PAGE UP, CTRL-B
+Scroll one page up.
+.It PAGE DOWN, CTRL-F, SPACE
+Scroll one page down.
+.It /
+Prompt for a new search and search forward (case-insensitive).
+.It ?
+Prompt for a new search and search backward (case-insensitive).
+.It n
+Search forward with the previously set search term.
+.It N
+Search backward with the previously set search term.
+.It \&[
+Go to the previous feed in the feeds pane and open it.
+.It ]
+Go to the next feed in the feeds pane and open it.
+.It CTRL-L
+Redraw screen.
+.It R
+Reload all feed files which were specified as arguments on startup.
+.It m
+Toggle mouse-mode.
+It supports xterm X10 and extended SGR encoding.
+.It s
+Toggle between monocle layout and the previous non-monocle layout.
+.It <
+Use a fixed sidebar size for the current layout and decrease the fixed width or
+height by 1 column.
+.It >
+Use a fixed sidebar size for the current layout and increase the fixed width or
+height by 1 column.
+.It =
+Reset the sidebar size to automaticly adjust for the current layout.
+With the vertical layout the width is the longest feed name with the item
+counts right-aligned.
+With the horizontal layout the height is half of the window height (minus the
+statusbar) or otherwise the total amount of visible feeds, whichever fits the
+best.
+.It t
+Toggle showing only feeds with new items in the sidebar.
+.It a, e, @
+Plumb URL of the enclosure.
+The URL is passed as a parameter to the program specified in
+.Ev SFEED_PLUMBER .
+.It o, ENTER, RETURN
+Feeds pane: load feed and its items.
+In the monocle layout it will also switch to the items pane after loading the
+feed items.
+Items pane: plumb current item URL, the URL is passed as a parameter to
+the program specified in
+.Ev SFEED_PLUMBER .
+.It c, p, |
+Pipe the whole TAB-Separated Value line to a program.
+This program can be specified with
+.Ev SFEED_PIPER .
+.It y
+Pipe the TAB-Separated Value field for yanking the URL to a program.
+This program can be specified with
+.Ev SFEED_YANKER .
+.It E
+Pipe the TAB-Separated Value field for yanking the enclosure to a program.
+This program can be specified with
+.Ev SFEED_YANKER .
+.It r
+Mark item as read.
+This will only work when
+.Ev SFEED_URL_FILE
+is set.
+.It u
+Mark item as unread.
+This will only work when
+.Ev SFEED_URL_FILE
+is set.
+.It f
+Mark all items of the current loaded feed as read.
+This will only work when
+.Ev SFEED_URL_FILE
+is set.
+.It F
+Mark all items of the current loaded feed as unread.
+This will only work when
+.Ev SFEED_URL_FILE
+is set.
+.It 1
+Set the current layout to a vertical mode.
+Showing a feeds sidebar to the left and the feed items to the right.
+.It 2
+Set the current layout to a horizontal mode.
+Showing a feeds sidebar on the top and the feed items on the bottom.
+.It 3
+Set the current layout to a monocle mode.
+Showing either a feeds or a feed items pane.
+.It q, EOF
+Quit
+.El
+.Sh MOUSE ACTIONS
+When mouse-mode is enabled the below actions are available.
+.Bl -tag -width Ds
+.It LEFT-CLICK
+Feeds pane: select and load the feed and its items.
+In the monocle layout it will also switch to the items pane after loading the
+feed items.
+Items pane: select item, when already selected then plumb it.
+.It RIGHT-CLICK
+Feeds pane: select feed, but do not load it.
+Items pane: pipe the item.
+.It SCROLL UP
+Scroll one page up.
+.It SCROLL DOWN
+Scroll one page down.
+.It FORWARD
+Switch to the items pane.
+.It BACKWARD
+Switch to the feeds pane.
+.El
+.Sh SIGNALS
+.Bl -tag -width Ds
+.It SIGHUP
+Reload all feed files which were specified as arguments on startup.
+.It SIGINT, SIGTERM
+Quit
+.It SIGWINCH
+Resize the pane dimensions relative to the terminal size.
+.El
+.Sh ENVIRONMENT VARIABLES
+.Bl -tag -width Ds
+.It Ev SFEED_AUTOCMD
+Read and process a sequence of keys as input commands from this environment
+variable first, afterwards read from stdin as usual.
+This can be useful to automate certain actions at the start.
+.It Ev SFEED_PIPER
+A program where the whole TAB-Separated Value line is piped to.
+By default this is "sfeed_content".
+.It Ev SFEED_PIPER_INTERACTIVE
+Handle the program interactively in the same terminal or not.
+If set to "1" then before execution it restores the terminal attributes and
+.Nm
+will wait until the program is finished.
+If set to "0" then it will suppress stdout and stderr output.
+By default this is set to "1".
+.It Ev SFEED_PLUMBER
+A program that receives the link URL or enclosure URL as a parameter.
+By default this is "xdg-open".
+.It Ev SFEED_PLUMBER_INTERACTIVE
+Handle the program interactively in the same terminal or not.
+If set to "1" then before execution it restores the terminal attributes and
+.Nm
+will wait until the program is finished.
+If set to "0" then it will suppress stdout and stderr output.
+For example this option is useful to open a text-mode browser in the same
+terminal.
+By default this is set to "0".
+.It Ev SFEED_YANKER
+A program where the URL or enclosure field is piped to, to copy it to a
+clipboard.
+By default this is "xclip -r".
+.It Ev SFEED_YANKER_INTERACTIVE
+Handle the program interactively in the same terminal or not.
+If set to "1" then before execution it restores the terminal attributes and
+.Nm
+will wait until the program is finished.
+If set to "0" then it will suppress stdout and stderr output.
+By default this is set to "0".
+.It Ev SFEED_URL_FILE
+If this variable is set then a different mode is used to mark items as read,
+instead of checking the timestamp, which is the default.
+The value specified is a plain-text file containing a list of read URLs, one
+URL per line.
+This URL is matched on the link field if it is set, otherwise it is matched on
+the id field.
+.It Ev SFEED_MARK_READ
+A program to mark items as read if
+.Ev SFEED_URL_FILE
+is also set, if unset the default program used is "sfeed_markread read".
+The marked items are piped to the program line by line.
+If the feed item has a link then this line is the link field, otherwise it is
+the id field.
+The program is expected to merge items in a safe/transactional manner.
+The program should return the exit status 0 on success or non-zero on failure.
+.It Ev SFEED_MARK_UNREAD
+A program to mark items as unread if
+.Ev SFEED_URL_FILE
+is also set, if unset the default program used is "sfeed_markread unread".
+The unmarked items are piped to the program line by line.
+If the feed item has a link then this line is the link field, otherwise it is
+the id field.
+The program is expected to merge items in a safe/transactional manner.
+The program should return the exit status 0 on success or non-zero on failure.
+.It Ev SFEED_LAZYLOAD
+Lazyload items when reading the feed data from files.
+This can reduce memory usage but increases latency when seeking items,
+especially on slower disk drives.
+It can also cause a race-condition issue if the feed data on disk is changed
+while having the UI open and offsets for the lines are different.
+A workaround for the race-condition issue is by sending the SIGHUP signal to
+.Nm
+directly after the data was updated.
+This forces
+.Nm
+to reload the latest feed data and update the correct line offsets.
+By default this is set to "0".
+.It Ev SFEED_FEED_PATH
+This variable is set by
+.Nm
+when a feed is loaded.
+If the data was read from stdin this variable is unset.
+It can be used by the plumb or pipe program for scripting purposes.
+.El
+.Sh EXIT STATUS
+.Ex -std
+.Sh EXAMPLES
+.Bd -literal
+sfeed_curses ~/.sfeed/feeds/*
+.Ed
+.Pp
+Another example which shows some of the features
+.Nm
+has:
+.Bd -literal
+export SFEED_AUTOCMD="2tgo"
+export SFEED_URL_FILE="$HOME/.sfeed/urls"
+[ -f "$SFEED_URL_FILE" ] || touch "$SFEED_URL_FILE"
+sfeed_curses ~/.sfeed/feeds/*
+.Ed
+.Pp
+Which does the following:
+.Bl -enum
+.It
+Set the current layout to a horizontal mode ('2' keybind').
+Showing a feeds sidebar on the top and the feed items on the bottom.
+.It
+Toggle showing only feeds with new items in the sidebar ('t' keybind).
+.It
+Go to the first row in the current panel ('g' keybind).
+.It
+Load the current selected feed ('o' keybind').
+.It
+Set a file to use for managing read and unread items.
+This file is a plain-text file containing a list of read URLs, one URL per
+line.
+.It
+Check if this file for managing the read and unread items exists.
+If it doesn't exist yet then create an empty file.
+.It
+Start
+.Nm .
+.El
+.Sh SEE ALSO
+.Xr sfeed 1 ,
+.Xr sfeed_content 1 ,
+.Xr sfeed_markread 1 ,
+.Xr sfeed_plain 1 ,
+.Xr xclip 1 ,
+.Xr sfeed 5
+.Sh AUTHORS
+.An Hiltjo Posthuma Aq Mt hiltjo@codemadness.org
diff --git a/sfeed_curses.c b/sfeed_curses.c
new file mode 100644
index 0000000..b84c391
--- /dev/null
+++ b/sfeed_curses.c
@@ -0,0 +1,2459 @@
+#include <sys/ioctl.h>
+#include <sys/select.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <locale.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <termios.h>
+#include <time.h>
+#include <unistd.h>
+#include <wchar.h>
+
+/* curses */
+#ifndef SFEED_MINICURSES
+#include <curses.h>
+#include <term.h>
+#else
+#include "minicurses.h"
+#endif
+
+#define LEN(a) sizeof((a))/sizeof((a)[0])
+#define MAX(a,b) ((a) > (b) ? (a) : (b))
+#define MIN(a,b) ((a) < (b) ? (a) : (b))
+
+#define PAD_TRUNCATE_SYMBOL "\xe2\x80\xa6" /* symbol: "ellipsis" */
+#define SCROLLBAR_SYMBOL_BAR "\xe2\x94\x82" /* symbol: "light vertical" */
+#define SCROLLBAR_SYMBOL_TICK " "
+#define LINEBAR_SYMBOL_BAR "\xe2\x94\x80" /* symbol: "light horizontal" */
+#define LINEBAR_SYMBOL_RIGHT "\xe2\x94\xa4" /* symbol: "light vertical and left" */
+#define UTF_INVALID_SYMBOL "\xef\xbf\xbd" /* symbol: "replacement" */
+
+/* color-theme */
+#ifndef SFEED_THEME
+#define SFEED_THEME "themes/mono.h"
+#endif
+#include SFEED_THEME
+
+enum {
+ ATTR_RESET = 0, ATTR_BOLD_ON = 1, ATTR_FAINT_ON = 2, ATTR_REVERSE_ON = 7
+};
+
+enum Layout {
+ LayoutVertical = 0, LayoutHorizontal, LayoutMonocle, LayoutLast
+};
+
+enum Pane { PaneFeeds, PaneItems, PaneLast };
+
+enum {
+ FieldUnixTimestamp = 0, FieldTitle, FieldLink, FieldContent,
+ FieldContentType, FieldId, FieldAuthor, FieldEnclosure,
+ FieldCategory, FieldLast
+};
+
+struct win {
+ int width; /* absolute width of the window */
+ int height; /* absolute height of the window */
+ int dirty; /* needs draw update: clears screen */
+};
+
+struct row {
+ char *text; /* text string, optional if using row_format() callback */
+ int bold;
+ void *data; /* data binding */
+};
+
+struct pane {
+ int x; /* absolute x position on the screen */
+ int y; /* absolute y position on the screen */
+ int width; /* absolute width of the pane */
+ int height; /* absolute height of the pane, should be > 0 */
+ off_t pos; /* focused row position */
+ struct row *rows;
+ size_t nrows; /* total amount of rows */
+ int focused; /* has focus or not */
+ int hidden; /* is visible or not */
+ int dirty; /* needs draw update */
+ /* (optional) callback functions */
+ struct row *(*row_get)(struct pane *, off_t pos);
+ char *(*row_format)(struct pane *, struct row *);
+ int (*row_match)(struct pane *, struct row *, const char *);
+};
+
+struct scrollbar {
+ int tickpos;
+ int ticksize;
+ int x; /* absolute x position on the screen */
+ int y; /* absolute y position on the screen */
+ int size; /* absolute size of the bar, should be > 0 */
+ int focused; /* has focus or not */
+ int hidden; /* is visible or not */
+ int dirty; /* needs draw update */
+};
+
+struct statusbar {
+ int x; /* absolute x position on the screen */
+ int y; /* absolute y position on the screen */
+ int width; /* absolute width of the bar */
+ char *text; /* data */
+ int hidden; /* is visible or not */
+ int dirty; /* needs draw update */
+};
+
+struct linebar {
+ int x; /* absolute x position on the screen */
+ int y; /* absolute y position on the screen */
+ int width; /* absolute width of the line */
+ int hidden; /* is visible or not */
+ int dirty; /* needs draw update */
+};
+
+/* /UI */
+
+struct item {
+ char *fields[FieldLast];
+ char *line; /* allocated split line */
+ /* field to match new items, if link is set match on link, else on id */
+ char *matchnew;
+ time_t timestamp;
+ int timeok;
+ int isnew;
+ off_t offset; /* line offset in file for lazyload */
+};
+
+struct items {
+ struct item *items; /* array of items */
+ size_t len; /* amount of items */
+ size_t cap; /* available capacity */
+};
+
+struct feed {
+ char *name; /* feed name */
+ char *path; /* path to feed or NULL for stdin */
+ unsigned long totalnew; /* amount of new items per feed */
+ unsigned long total; /* total items */
+ FILE *fp; /* file pointer */
+};
+
+void alldirty(void);
+void cleanup(void);
+void draw(void);
+int getsidebarsize(void);
+void markread(struct pane *, off_t, off_t, int);
+void pane_draw(struct pane *);
+void sighandler(int);
+void updategeom(void);
+void updatesidebar(void);
+void urls_free(void);
+int urls_isnew(const char *);
+void urls_read(void);
+
+static struct linebar linebar;
+static struct statusbar statusbar;
+static struct pane panes[PaneLast];
+static struct scrollbar scrollbars[PaneLast]; /* each pane has a scrollbar */
+static struct win win;
+static size_t selpane;
+/* fixed sidebar size, < 0 is automatic */
+static int fixedsidebarsizes[LayoutLast] = { -1, -1, -1 };
+static int layout = LayoutVertical, prevlayout = LayoutVertical;
+static int onlynew = 0; /* show only new in sidebar */
+static int usemouse = 1; /* use xterm mouse tracking */
+
+static struct termios tsave; /* terminal state at startup */
+static struct termios tcur;
+static int devnullfd;
+static int istermsetup, needcleanup;
+
+static struct feed *feeds;
+static struct feed *curfeed;
+static size_t nfeeds; /* amount of feeds */
+static time_t comparetime;
+static char *urlfile, **urls;
+static size_t nurls;
+
+volatile sig_atomic_t sigstate = 0;
+
+static char *plumbercmd = "xdg-open"; /* env variable: $SFEED_PLUMBER */
+static char *pipercmd = "sfeed_content"; /* env variable: $SFEED_PIPER */
+static char *yankercmd = "xclip -r"; /* env variable: $SFEED_YANKER */
+static char *markreadcmd = "sfeed_markread read"; /* env variable: $SFEED_MARK_READ */
+static char *markunreadcmd = "sfeed_markread unread"; /* env variable: $SFEED_MARK_UNREAD */
+static char *cmdenv; /* env variable: $SFEED_AUTOCMD */
+static int plumberia = 0; /* env variable: $SFEED_PLUMBER_INTERACTIVE */
+static int piperia = 1; /* env variable: $SFEED_PIPER_INTERACTIVE */
+static int yankeria = 0; /* env variable: $SFEED_YANKER_INTERACTIVE */
+static int lazyload = 0; /* env variable: $SFEED_LAZYLOAD */
+
+int
+ttywritef(const char *fmt, ...)
+{
+ va_list ap;
+ int n;
+
+ va_start(ap, fmt);
+ n = vfprintf(stdout, fmt, ap);
+ va_end(ap);
+ fflush(stdout);
+
+ return n;
+}
+
+int
+ttywrite(const char *s)
+{
+ if (!s)
+ return 0; /* for tparm() returning NULL */
+ return write(1, s, strlen(s));
+}
+
+/* hint for compilers and static analyzers that a function exits */
+#ifndef __dead
+#define __dead
+#endif
+
+/* print to stderr, call cleanup() and _exit(). */
+__dead void
+die(const char *fmt, ...)
+{
+ va_list ap;
+ int saved_errno;
+
+ saved_errno = errno;
+ cleanup();
+
+ va_start(ap, fmt);
+ vfprintf(stderr, fmt, ap);
+ va_end(ap);
+
+ if (saved_errno)
+ fprintf(stderr, ": %s", strerror(saved_errno));
+ fflush(stderr);
+ write(2, "\n", 1);
+
+ _exit(1);
+}
+
+void *
+erealloc(void *ptr, size_t size)
+{
+ void *p;
+
+ if (!(p = realloc(ptr, size)))
+ die("realloc");
+ return p;
+}
+
+void *
+ecalloc(size_t nmemb, size_t size)
+{
+ void *p;
+
+ if (!(p = calloc(nmemb, size)))
+ die("calloc");
+ return p;
+}
+
+char *
+estrdup(const char *s)
+{
+ char *p;
+
+ if (!(p = strdup(s)))
+ die("strdup");
+ return p;
+}
+
+/* wrapper for tparm which allows NULL parameter for str. */
+char *
+tparmnull(const char *str, long p1, long p2, long p3, long p4, long p5,
+ long p6, long p7, long p8, long p9)
+{
+ if (!str)
+ return NULL;
+ return tparm(str, p1, p2, p3, p4, p5, p6, p7, p8, p9);
+}
+
+/* strcasestr() included for portability */
+#undef strcasestr
+char *
+strcasestr(const char *h, const char *n)
+{
+ size_t i;
+
+ if (!n[0])
+ return (char *)h;
+
+ for (; *h; ++h) {
+ for (i = 0; n[i] && tolower((unsigned char)n[i]) ==
+ tolower((unsigned char)h[i]); ++i)
+ ;
+ if (n[i] == '\0')
+ return (char *)h;
+ }
+
+ return NULL;
+}
+
+/* Splits fields in the line buffer by replacing TAB separators with NUL ('\0')
+ terminators and assign these fields as pointers. If there are less fields
+ than expected then the field is an empty string constant. */
+void
+parseline(char *line, char *fields[FieldLast])
+{
+ char *prev, *s;
+ size_t i;
+
+ for (prev = line, i = 0;
+ (s = strchr(prev, '\t')) && i < FieldLast - 1;
+ i++) {
+ *s = '\0';
+ fields[i] = prev;
+ prev = s + 1;
+ }
+ fields[i++] = prev;
+ /* make non-parsed fields empty. */
+ for (; i < FieldLast; i++)
+ fields[i] = "";
+}
+
+/* Parse time to time_t, assumes time_t is signed, ignores fractions. */
+int
+strtotime(const char *s, time_t *t)
+{
+ long long l;
+ char *e;
+
+ errno = 0;
+ l = strtoll(s, &e, 10);
+ if (errno || *s == '\0' || *e)
+ return -1;
+ /* NOTE: assumes time_t is 64-bit on 64-bit platforms:
+ long long (at least 32-bit) to time_t. */
+ if (t)
+ *t = (time_t)l;
+
+ return 0;
+}
+
+size_t
+colw(const char *s)
+{
+ wchar_t wc;
+ size_t col = 0, i, slen;
+ int inc, rl, w;
+
+ slen = strlen(s);
+ for (i = 0; i < slen; i += inc) {
+ inc = 1; /* next byte */
+ if ((unsigned char)s[i] < 32) {
+ continue;
+ } else if ((unsigned char)s[i] >= 127) {
+ rl = mbtowc(&wc, &s[i], slen - i < 4 ? slen - i : 4);
+ inc = rl;
+ if (rl < 0) {
+ mbtowc(NULL, NULL, 0); /* reset state */
+ inc = 1; /* invalid, seek next byte */
+ w = 1; /* replacement char is one width */
+ } else if ((w = wcwidth(wc)) == -1) {
+ continue;
+ }
+ col += w;
+ } else {
+ col++;
+ }
+ }
+ return col;
+}
+
+/* Format `len' columns of characters. If string is shorter pad the rest
+ with characters `pad`. */
+int
+utf8pad(char *buf, size_t bufsiz, const char *s, size_t len, int pad)
+{
+ wchar_t wc;
+ size_t col = 0, i, slen, siz = 0;
+ int inc, rl, w;
+
+ if (!bufsiz)
+ return -1;
+ if (!len) {
+ buf[0] = '\0';
+ return 0;
+ }
+
+ slen = strlen(s);
+ for (i = 0; i < slen; i += inc) {
+ inc = 1; /* next byte */
+ if ((unsigned char)s[i] < 32)
+ continue;
+
+ rl = mbtowc(&wc, &s[i], slen - i < 4 ? slen - i : 4);
+ inc = rl;
+ if (rl < 0) {
+ mbtowc(NULL, NULL, 0); /* reset state */
+ inc = 1; /* invalid, seek next byte */
+ w = 1; /* replacement char is one width */
+ } else if ((w = wcwidth(wc)) == -1) {
+ continue;
+ }
+
+ if (col + w > len || (col + w == len && s[i + inc])) {
+ if (siz + 4 >= bufsiz)
+ return -1;
+ memcpy(&buf[siz], PAD_TRUNCATE_SYMBOL, sizeof(PAD_TRUNCATE_SYMBOL) - 1);
+ siz += sizeof(PAD_TRUNCATE_SYMBOL) - 1;
+ buf[siz] = '\0';
+ col++;
+ break;
+ } else if (rl < 0) {
+ if (siz + 4 >= bufsiz)
+ return -1;
+ memcpy(&buf[siz], UTF_INVALID_SYMBOL, sizeof(UTF_INVALID_SYMBOL) - 1);
+ siz += sizeof(UTF_INVALID_SYMBOL) - 1;
+ buf[siz] = '\0';
+ col++;
+ continue;
+ }
+ if (siz + inc + 1 >= bufsiz)
+ return -1;
+ memcpy(&buf[siz], &s[i], inc);
+ siz += inc;
+ buf[siz] = '\0';
+ col += w;
+ }
+
+ len -= col;
+ if (siz + len + 1 >= bufsiz)
+ return -1;
+ memset(&buf[siz], pad, len);
+ siz += len;
+ buf[siz] = '\0';
+
+ return 0;
+}
+
+/* print `len' columns of characters. If string is shorter pad the rest with
+ * characters `pad`. */
+void
+printutf8pad(FILE *fp, const char *s, size_t len, int pad)
+{
+ wchar_t wc;
+ size_t col = 0, i, slen;
+ int inc, rl, w;
+
+ if (!len)
+ return;
+
+ slen = strlen(s);
+ for (i = 0; i < slen; i += inc) {
+ inc = 1; /* next byte */
+ if ((unsigned char)s[i] < 32) {
+ continue; /* skip control characters */
+ } else if ((unsigned char)s[i] >= 127) {
+ rl = mbtowc(&wc, s + i, slen - i < 4 ? slen - i : 4);
+ inc = rl;
+ if (rl < 0) {
+ mbtowc(NULL, NULL, 0); /* reset state */
+ inc = 1; /* invalid, seek next byte */
+ w = 1; /* replacement char is one width */
+ } else if ((w = wcwidth(wc)) == -1) {
+ continue;
+ }
+
+ if (col + w > len || (col + w == len && s[i + inc])) {
+ fputs("\xe2\x80\xa6", fp); /* ellipsis */
+ col++;
+ break;
+ } else if (rl < 0) {
+ fputs("\xef\xbf\xbd", fp); /* replacement */
+ col++;
+ continue;
+ }
+ fwrite(&s[i], 1, rl, fp);
+ col += w;
+ } else {
+ /* optimization: simple ASCII character */
+ if (col + 1 > len || (col + 1 == len && s[i + 1])) {
+ fputs("\xe2\x80\xa6", fp); /* ellipsis */
+ col++;
+ break;
+ }
+ putc(s[i], fp);
+ col++;
+ }
+
+ }
+ for (; col < len; ++col)
+ putc(pad, fp);
+}
+
+void
+resetstate(void)
+{
+ ttywrite("\x1b""c"); /* rs1: reset title and state */
+}
+
+void
+updatetitle(void)
+{
+ unsigned long totalnew = 0, total = 0;
+ size_t i;
+
+ for (i = 0; i < nfeeds; i++) {
+ totalnew += feeds[i].totalnew;
+ total += feeds[i].total;
+ }
+ ttywritef("\x1b]2;(%lu/%lu) - sfeed_curses\x1b\\", totalnew, total);
+}
+
+void
+appmode(int on)
+{
+ ttywrite(tparmnull(on ? enter_ca_mode : exit_ca_mode, 0, 0, 0, 0, 0, 0, 0, 0, 0));
+}
+
+void
+mousemode(int on)
+{
+ ttywrite(on ? "\x1b[?1000h" : "\x1b[?1000l"); /* xterm X10 mouse mode */
+ ttywrite(on ? "\x1b[?1006h" : "\x1b[?1006l"); /* extended SGR mouse mode */
+}
+
+void
+cursormode(int on)
+{
+ ttywrite(tparmnull(on ? cursor_normal : cursor_invisible, 0, 0, 0, 0, 0, 0, 0, 0, 0));
+}
+
+void
+cursormove(int x, int y)
+{
+ ttywrite(tparmnull(cursor_address, y, x, 0, 0, 0, 0, 0, 0, 0));
+}
+
+void
+cursorsave(void)
+{
+ /* do not save the cursor if it won't be restored anyway */
+ if (cursor_invisible)
+ ttywrite(tparmnull(save_cursor, 0, 0, 0, 0, 0, 0, 0, 0, 0));
+}
+
+void
+cursorrestore(void)
+{
+ /* if the cursor cannot be hidden then move to a consistent position */
+ if (cursor_invisible)
+ ttywrite(tparmnull(restore_cursor, 0, 0, 0, 0, 0, 0, 0, 0, 0));
+ else
+ cursormove(0, 0);
+}
+
+void
+attrmode(int mode)
+{
+ switch (mode) {
+ case ATTR_RESET:
+ ttywrite(tparmnull(exit_attribute_mode, 0, 0, 0, 0, 0, 0, 0, 0, 0));
+ break;
+ case ATTR_BOLD_ON:
+ ttywrite(tparmnull(enter_bold_mode, 0, 0, 0, 0, 0, 0, 0, 0, 0));
+ break;
+ case ATTR_FAINT_ON:
+ ttywrite(tparmnull(enter_dim_mode, 0, 0, 0, 0, 0, 0, 0, 0, 0));
+ break;
+ case ATTR_REVERSE_ON:
+ ttywrite(tparmnull(enter_reverse_mode, 0, 0, 0, 0, 0, 0, 0, 0, 0));
+ break;
+ default:
+ break;
+ }
+}
+
+void
+cleareol(void)
+{
+ ttywrite(tparmnull(clr_eol, 0, 0, 0, 0, 0, 0, 0, 0, 0));
+}
+
+void
+clearscreen(void)
+{
+ ttywrite(tparmnull(clear_screen, 0, 0, 0, 0, 0, 0, 0, 0, 0));
+}
+
+void
+cleanup(void)
+{
+ struct sigaction sa;
+
+ if (!needcleanup)
+ return;
+ needcleanup = 0;
+
+ if (istermsetup) {
+ resetstate();
+ cursormode(1);
+ appmode(0);
+ clearscreen();
+
+ if (usemouse)
+ mousemode(0);
+ }
+
+ /* restore terminal settings */
+ tcsetattr(0, TCSANOW, &tsave);
+
+ memset(&sa, 0, sizeof(sa));
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = SA_RESTART; /* require BSD signal semantics */
+ sa.sa_handler = SIG_DFL;
+ sigaction(SIGWINCH, &sa, NULL);
+}
+
+void
+win_update(struct win *w, int width, int height)
+{
+ if (width != w->width || height != w->height)
+ w->dirty = 1;
+ w->width = width;
+ w->height = height;
+}
+
+void
+resizewin(void)
+{
+ struct winsize winsz;
+ int width, height;
+
+ if (ioctl(1, TIOCGWINSZ, &winsz) != -1) {
+ width = winsz.ws_col > 0 ? winsz.ws_col : 80;
+ height = winsz.ws_row > 0 ? winsz.ws_row : 24;
+ win_update(&win, width, height);
+ }
+ if (win.dirty)
+ alldirty();
+}
+
+void
+init(void)
+{
+ struct sigaction sa;
+ int errret = 1;
+
+ needcleanup = 1;
+
+ tcgetattr(0, &tsave);
+ memcpy(&tcur, &tsave, sizeof(tcur));
+ tcur.c_lflag &= ~(ECHO|ICANON);
+ tcur.c_cc[VMIN] = 1;
+ tcur.c_cc[VTIME] = 0;
+ tcsetattr(0, TCSANOW, &tcur);
+
+ if (!istermsetup &&
+ (setupterm(NULL, 1, &errret) != OK || errret != 1)) {
+ errno = 0;
+ die("setupterm: terminfo database or entry for $TERM not found");
+ }
+ istermsetup = 1;
+ resizewin();
+
+ appmode(1);
+ cursormode(0);
+
+ if (usemouse)
+ mousemode(usemouse);
+
+ memset(&sa, 0, sizeof(sa));
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = SA_RESTART; /* require BSD signal semantics */
+ sa.sa_handler = sighandler;
+ sigaction(SIGHUP, &sa, NULL);
+ sigaction(SIGINT, &sa, NULL);
+ sigaction(SIGTERM, &sa, NULL);
+ sigaction(SIGWINCH, &sa, NULL);
+}
+
+void
+processexit(pid_t pid, int interactive)
+{
+ pid_t wpid;
+ struct sigaction sa;
+
+ memset(&sa, 0, sizeof(sa));
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = SA_RESTART; /* require BSD signal semantics */
+ sa.sa_handler = SIG_IGN;
+ sigaction(SIGINT, &sa, NULL);
+
+ if (interactive) {
+ while ((wpid = wait(NULL)) >= 0 && wpid != pid)
+ ;
+ init();
+ updatesidebar();
+ updategeom();
+ updatetitle();
+ } else {
+ sa.sa_handler = sighandler;
+ sigaction(SIGINT, &sa, NULL);
+ }
+}
+
+/* Pipe item line or item field to a program.
+ If `field` is -1 then pipe the TSV line, else a specified field.
+ if `interactive` is 1 then cleanup and restore the tty and wait on the
+ process.
+ if 0 then don't do that and also write stdout and stderr to /dev/null. */
+void
+pipeitem(const char *cmd, struct item *item, int field, int interactive)
+{
+ FILE *fp;
+ pid_t pid;
+ int i, status;
+
+ if (interactive)
+ cleanup();
+
+ switch ((pid = fork())) {
+ case -1:
+ die("fork");
+ case 0:
+ if (!interactive) {
+ dup2(devnullfd, 1);
+ dup2(devnullfd, 2);
+ }
+
+ errno = 0;
+ if (!(fp = popen(cmd, "w")))
+ die("popen: %s", cmd);
+ if (field == -1) {
+ for (i = 0; i < FieldLast; i++) {
+ if (i)
+ putc('\t', fp);
+ fputs(item->fields[i], fp);
+ }
+ } else {
+ fputs(item->fields[field], fp);
+ }
+ putc('\n', fp);
+ status = pclose(fp);
+ status = WIFEXITED(status) ? WEXITSTATUS(status) : 127;
+ _exit(status);
+ default:
+ processexit(pid, interactive);
+ }
+}
+
+void
+forkexec(char *argv[], int interactive)
+{
+ pid_t pid;
+
+ if (interactive)
+ cleanup();
+
+ switch ((pid = fork())) {
+ case -1:
+ die("fork");
+ case 0:
+ if (!interactive) {
+ dup2(devnullfd, 1);
+ dup2(devnullfd, 2);
+ }
+ if (execvp(argv[0], argv) == -1)
+ _exit(1);
+ default:
+ processexit(pid, interactive);
+ }
+}
+
+struct row *
+pane_row_get(struct pane *p, off_t pos)
+{
+ if (pos < 0 || pos >= p->nrows)
+ return NULL;
+
+ if (p->row_get)
+ return p->row_get(p, pos);
+ return p->rows + pos;
+}
+
+char *
+pane_row_text(struct pane *p, struct row *row)
+{
+ /* custom formatter */
+ if (p->row_format)
+ return p->row_format(p, row);
+ return row->text;
+}
+
+int
+pane_row_match(struct pane *p, struct row *row, const char *s)
+{
+ if (p->row_match)
+ return p->row_match(p, row, s);
+ return (strcasestr(pane_row_text(p, row), s) != NULL);
+}
+
+void
+pane_row_draw(struct pane *p, off_t pos, int selected)
+{
+ struct row *row;
+
+ if (p->hidden || !p->width || !p->height ||
+ p->x >= win.width || p->y + (pos % p->height) >= win.height)
+ return;
+
+ row = pane_row_get(p, pos);
+
+ cursorsave();
+ cursormove(p->x, p->y + (pos % p->height));
+
+ if (p->focused)
+ THEME_ITEM_FOCUS();
+ else
+ THEME_ITEM_NORMAL();
+ if (row && row->bold)
+ THEME_ITEM_BOLD();
+ if (selected)
+ THEME_ITEM_SELECTED();
+ if (row) {
+ printutf8pad(stdout, pane_row_text(p, row), p->width, ' ');
+ fflush(stdout);
+ } else {
+ ttywritef("%-*.*s", p->width, p->width, "");
+ }
+
+ attrmode(ATTR_RESET);
+ cursorrestore();
+}
+
+void
+pane_setpos(struct pane *p, off_t pos)
+{
+ if (pos < 0)
+ pos = 0; /* clamp */
+ if (!p->nrows)
+ return; /* invalid */
+ if (pos >= p->nrows)
+ pos = p->nrows - 1; /* clamp */
+ if (pos == p->pos)
+ return; /* no change */
+
+ /* is on different scroll region? mark whole pane dirty */
+ if (((p->pos - (p->pos % p->height)) / p->height) !=
+ ((pos - (pos % p->height)) / p->height)) {
+ p->dirty = 1;
+ } else {
+ /* only redraw the 2 dirty rows */
+ pane_row_draw(p, p->pos, 0);
+ pane_row_draw(p, pos, 1);
+ }
+ p->pos = pos;
+}
+
+void
+pane_scrollpage(struct pane *p, int pages)
+{
+ off_t pos;
+
+ if (pages < 0) {
+ pos = p->pos - (-pages * p->height);
+ pos -= (p->pos % p->height);
+ pos += p->height - 1;
+ pane_setpos(p, pos);
+ } else if (pages > 0) {
+ pos = p->pos + (pages * p->height);
+ if ((p->pos % p->height))
+ pos -= (p->pos % p->height);
+ pane_setpos(p, pos);
+ }
+}
+
+void
+pane_scrolln(struct pane *p, int n)
+{
+ pane_setpos(p, p->pos + n);
+}
+
+void
+pane_setfocus(struct pane *p, int on)
+{
+ if (p->focused != on) {
+ p->focused = on;
+ p->dirty = 1;
+ }
+}
+
+void
+pane_draw(struct pane *p)
+{
+ off_t pos, y;
+
+ if (!p->dirty)
+ return;
+ p->dirty = 0;
+ if (p->hidden || !p->width || !p->height)
+ return;
+
+ /* draw visible rows */
+ pos = p->pos - (p->pos % p->height);
+ for (y = 0; y < p->height; y++)
+ pane_row_draw(p, y + pos, (y + pos) == p->pos);
+}
+
+void
+setlayout(int n)
+{
+ if (layout != LayoutMonocle)
+ prevlayout = layout; /* previous non-monocle layout */
+ layout = n;
+}
+
+void
+updategeom(void)
+{
+ int h, w, x = 0, y = 0;
+
+ panes[PaneFeeds].hidden = layout == LayoutMonocle && (selpane != PaneFeeds);
+ panes[PaneItems].hidden = layout == LayoutMonocle && (selpane != PaneItems);
+ linebar.hidden = layout != LayoutHorizontal;
+
+ w = win.width;
+ /* always reserve space for statusbar */
+ h = MAX(win.height - 1, 1);
+
+ panes[PaneFeeds].x = x;
+ panes[PaneFeeds].y = y;
+
+ switch (layout) {
+ case LayoutVertical:
+ panes[PaneFeeds].width = getsidebarsize();
+
+ x += panes[PaneFeeds].width;
+ w -= panes[PaneFeeds].width;
+
+ /* space for scrollbar if sidebar is visible */
+ w--;
+ x++;
+
+ panes[PaneFeeds].height = MAX(h, 1);
+ break;
+ case LayoutHorizontal:
+ panes[PaneFeeds].height = getsidebarsize();
+
+ h -= panes[PaneFeeds].height;
+ y += panes[PaneFeeds].height;
+
+ linebar.x = 0;
+ linebar.y = y;
+ linebar.width = win.width;
+
+ h--;
+ y++;
+
+ panes[PaneFeeds].width = MAX(w - 1, 0);
+ break;
+ case LayoutMonocle:
+ panes[PaneFeeds].height = MAX(h, 1);
+ panes[PaneFeeds].width = MAX(w - 1, 0);
+ break;
+ }
+
+ panes[PaneItems].x = x;
+ panes[PaneItems].y = y;
+ panes[PaneItems].width = MAX(w - 1, 0);
+ panes[PaneItems].height = MAX(h, 1);
+ if (x >= win.width || y + 1 >= win.height)
+ panes[PaneItems].hidden = 1;
+
+ scrollbars[PaneFeeds].x = panes[PaneFeeds].x + panes[PaneFeeds].width;
+ scrollbars[PaneFeeds].y = panes[PaneFeeds].y;
+ scrollbars[PaneFeeds].size = panes[PaneFeeds].height;
+ scrollbars[PaneFeeds].hidden = panes[PaneFeeds].hidden;
+
+ scrollbars[PaneItems].x = panes[PaneItems].x + panes[PaneItems].width;
+ scrollbars[PaneItems].y = panes[PaneItems].y;
+ scrollbars[PaneItems].size = panes[PaneItems].height;
+ scrollbars[PaneItems].hidden = panes[PaneItems].hidden;
+
+ statusbar.width = win.width;
+ statusbar.x = 0;
+ statusbar.y = MAX(win.height - 1, 0);
+
+ alldirty();
+}
+
+void
+scrollbar_setfocus(struct scrollbar *s, int on)
+{
+ if (s->focused != on) {
+ s->focused = on;
+ s->dirty = 1;
+ }
+}
+
+void
+scrollbar_update(struct scrollbar *s, off_t pos, off_t nrows, int pageheight)
+{
+ int tickpos = 0, ticksize = 0;
+
+ /* do not show a scrollbar if all items fit on the page */
+ if (nrows > pageheight) {
+ ticksize = s->size / ((double)nrows / (double)pageheight);
+ if (ticksize == 0)
+ ticksize = 1;
+
+ tickpos = (pos / (double)nrows) * (double)s->size;
+
+ /* fixup due to cell precision */
+ if (pos + pageheight >= nrows ||
+ tickpos + ticksize >= s->size)
+ tickpos = s->size - ticksize;
+ }
+
+ if (s->tickpos != tickpos || s->ticksize != ticksize)
+ s->dirty = 1;
+ s->tickpos = tickpos;
+ s->ticksize = ticksize;
+}
+
+void
+scrollbar_draw(struct scrollbar *s)
+{
+ off_t y;
+
+ if (!s->dirty)
+ return;
+ s->dirty = 0;
+ if (s->hidden || !s->size || s->x >= win.width || s->y >= win.height)
+ return;
+
+ cursorsave();
+
+ /* draw bar (not tick) */
+ if (s->focused)
+ THEME_SCROLLBAR_FOCUS();
+ else
+ THEME_SCROLLBAR_NORMAL();
+ for (y = 0; y < s->size; y++) {
+ if (y >= s->tickpos && y < s->tickpos + s->ticksize)
+ continue; /* skip tick */
+ cursormove(s->x, s->y + y);
+ ttywrite(SCROLLBAR_SYMBOL_BAR);
+ }
+
+ /* draw tick */
+ if (s->focused)
+ THEME_SCROLLBAR_TICK_FOCUS();
+ else
+ THEME_SCROLLBAR_TICK_NORMAL();
+ for (y = s->tickpos; y < s->size && y < s->tickpos + s->ticksize; y++) {
+ cursormove(s->x, s->y + y);
+ ttywrite(SCROLLBAR_SYMBOL_TICK);
+ }
+
+ attrmode(ATTR_RESET);
+ cursorrestore();
+}
+
+int
+readch(void)
+{
+ unsigned char b;
+ fd_set readfds;
+ struct timeval tv;
+
+ if (cmdenv && *cmdenv)
+ return *(cmdenv++);
+
+ for (;;) {
+ FD_ZERO(&readfds);
+ FD_SET(0, &readfds);
+ tv.tv_sec = 0;
+ tv.tv_usec = 250000; /* 250ms */
+ switch (select(1, &readfds, NULL, NULL, &tv)) {
+ case -1:
+ if (errno != EINTR)
+ die("select");
+ return -2; /* EINTR: like a signal */
+ case 0:
+ return -3; /* time-out */
+ }
+
+ switch (read(0, &b, 1)) {
+ case -1: die("read");
+ case 0: return EOF;
+ default: return (int)b;
+ }
+ }
+}
+
+char *
+lineeditor(void)
+{
+ char *input = NULL;
+ size_t cap = 0, nchars = 0;
+ int ch;
+
+ for (;;) {
+ if (nchars + 1 >= cap) {
+ cap = cap ? cap * 2 : 32;
+ input = erealloc(input, cap);
+ }
+
+ ch = readch();
+ if (ch == EOF || ch == '\r' || ch == '\n') {
+ input[nchars] = '\0';
+ break;
+ } else if (ch == '\b' || ch == 0x7f) {
+ if (!nchars)
+ continue;
+ input[--nchars] = '\0';
+ write(1, "\b \b", 3); /* back, blank, back */
+ continue;
+ } else if (ch >= ' ') {
+ input[nchars] = ch;
+ write(1, &input[nchars], 1);
+ nchars++;
+ } else if (ch < 0) {
+ switch (sigstate) {
+ case 0:
+ case SIGWINCH:
+ continue; /* process signals later */
+ case SIGINT:
+ sigstate = 0; /* exit prompt, do not quit */
+ case SIGTERM:
+ break; /* exit prompt and quit */
+ }
+ free(input);
+ return NULL;
+ }
+ }
+ return input;
+}
+
+char *
+uiprompt(int x, int y, char *fmt, ...)
+{
+ va_list ap;
+ char *input, buf[32];
+
+ va_start(ap, fmt);
+ vsnprintf(buf, sizeof(buf), fmt, ap);
+ va_end(ap);
+
+ cursorsave();
+ cursormove(x, y);
+ THEME_INPUT_LABEL();
+ ttywrite(buf);
+ attrmode(ATTR_RESET);
+
+ THEME_INPUT_NORMAL();
+ cleareol();
+ cursormode(1);
+ cursormove(x + colw(buf) + 1, y);
+
+ input = lineeditor();
+ attrmode(ATTR_RESET);
+
+ cursormode(0);
+ cursorrestore();
+
+ return input;
+}
+
+void
+linebar_draw(struct linebar *b)
+{
+ int i;
+
+ if (!b->dirty)
+ return;
+ b->dirty = 0;
+ if (b->hidden || !b->width)
+ return;
+
+ cursorsave();
+ cursormove(b->x, b->y);
+ THEME_LINEBAR();
+ for (i = 0; i < b->width - 1; i++)
+ ttywrite(LINEBAR_SYMBOL_BAR);
+ ttywrite(LINEBAR_SYMBOL_RIGHT);
+ attrmode(ATTR_RESET);
+ cursorrestore();
+}
+
+void
+statusbar_draw(struct statusbar *s)
+{
+ if (!s->dirty)
+ return;
+ s->dirty = 0;
+ if (s->hidden || !s->width || s->x >= win.width || s->y >= win.height)
+ return;
+
+ cursorsave();
+ cursormove(s->x, s->y);
+ THEME_STATUSBAR();
+ /* terminals without xenl (eat newline glitch) mess up scrolling when
+ using the last cell on the last line on the screen. */
+ printutf8pad(stdout, s->text, s->width - (!eat_newline_glitch), ' ');
+ fflush(stdout);
+ attrmode(ATTR_RESET);
+ cursorrestore();
+}
+
+void
+statusbar_update(struct statusbar *s, const char *text)
+{
+ if (s->text && !strcmp(s->text, text))
+ return;
+
+ free(s->text);
+ s->text = estrdup(text);
+ s->dirty = 1;
+}
+
+/* Line to item, modifies and splits line in-place. */
+int
+linetoitem(char *line, struct item *item)
+{
+ char *fields[FieldLast];
+ time_t parsedtime;
+
+ item->line = line;
+ parseline(line, fields);
+ memcpy(item->fields, fields, sizeof(fields));
+ if (urlfile)
+ item->matchnew = estrdup(fields[fields[FieldLink][0] ? FieldLink : FieldId]);
+ else
+ item->matchnew = NULL;
+
+ parsedtime = 0;
+ if (!strtotime(fields[FieldUnixTimestamp], &parsedtime)) {
+ item->timestamp = parsedtime;
+ item->timeok = 1;
+ } else {
+ item->timestamp = 0;
+ item->timeok = 0;
+ }
+
+ return 0;
+}
+
+void
+feed_items_free(struct items *items)
+{
+ size_t i;
+
+ for (i = 0; i < items->len; i++) {
+ free(items->items[i].line);
+ free(items->items[i].matchnew);
+ }
+ free(items->items);
+ items->items = NULL;
+ items->len = 0;
+ items->cap = 0;
+}
+
+void
+feed_items_get(struct feed *f, FILE *fp, struct items *itemsret)
+{
+ struct item *item, *items = NULL;
+ char *line = NULL;
+ size_t cap, i, linesize = 0, nitems;
+ ssize_t linelen, n;
+ off_t offset;
+
+ cap = nitems = 0;
+ offset = 0;
+ for (i = 0; ; i++) {
+ if (i + 1 >= cap) {
+ cap = cap ? cap * 2 : 16;
+ items = erealloc(items, cap * sizeof(struct item));
+ }
+ if ((n = linelen = getline(&line, &linesize, fp)) > 0) {
+ item = &items[i];
+
+ item->offset = offset;
+ offset += linelen;
+
+ if (line[linelen - 1] == '\n')
+ line[--linelen] = '\0';
+
+ if (lazyload && f->path) {
+ linetoitem(line, item);
+
+ /* data is ignored here, will be lazy-loaded later. */
+ item->line = NULL;
+ memset(item->fields, 0, sizeof(item->fields));
+ } else {
+ linetoitem(estrdup(line), item);
+ }
+
+ nitems++;
+ }
+ if (ferror(fp))
+ die("getline: %s", f->name);
+ if (n <= 0 || feof(fp))
+ break;
+ }
+ itemsret->cap = cap;
+ itemsret->items = items;
+ itemsret->len = nitems;
+ free(line);
+}
+
+void
+updatenewitems(struct feed *f)
+{
+ struct pane *p;
+ struct row *row;
+ struct item *item;
+ size_t i;
+
+ p = &panes[PaneItems];
+ f->totalnew = 0;
+ for (i = 0; i < p->nrows; i++) {
+ row = &(p->rows[i]); /* do not use pane_row_get */
+ item = row->data;
+ if (urlfile)
+ item->isnew = urls_isnew(item->matchnew);
+ else
+ item->isnew = (item->timeok && item->timestamp >= comparetime);
+ row->bold = item->isnew;
+ f->totalnew += item->isnew;
+ }
+ f->total = p->nrows;
+}
+
+void
+feed_load(struct feed *f, FILE *fp)
+{
+ /* static, reuse local buffers */
+ static struct items items;
+ struct pane *p;
+ size_t i;
+
+ feed_items_free(&items);
+ feed_items_get(f, fp, &items);
+ p = &panes[PaneItems];
+ p->pos = 0;
+ p->nrows = items.len;
+ free(p->rows);
+ p->rows = ecalloc(sizeof(p->rows[0]), items.len + 1);
+ for (i = 0; i < items.len; i++)
+ p->rows[i].data = &(items.items[i]); /* do not use pane_row_get */
+
+ updatenewitems(f);
+
+ p->dirty = 1;
+}
+
+void
+feed_count(struct feed *f, FILE *fp)
+{
+ char *fields[FieldLast];
+ char *line = NULL;
+ size_t linesize = 0;
+ ssize_t linelen;
+ time_t parsedtime;
+
+ f->totalnew = f->total = 0;
+ while ((linelen = getline(&line, &linesize, fp)) > 0) {
+ if (line[linelen - 1] == '\n')
+ line[--linelen] = '\0';
+ parseline(line, fields);
+
+ if (urlfile) {
+ f->totalnew += urls_isnew(fields[fields[FieldLink][0] ? FieldLink : FieldId]);
+ } else {
+ parsedtime = 0;
+ if (!strtotime(fields[FieldUnixTimestamp], &parsedtime))
+ f->totalnew += (parsedtime >= comparetime);
+ }
+ f->total++;
+ }
+ if (ferror(fp))
+ die("getline: %s", f->name);
+ free(line);
+}
+
+void
+feed_setenv(struct feed *f)
+{
+ if (f && f->path)
+ setenv("SFEED_FEED_PATH", f->path, 1);
+ else
+ unsetenv("SFEED_FEED_PATH");
+}
+
+/* Change feed, have one file open, reopen file if needed. */
+void
+feeds_set(struct feed *f)
+{
+ if (curfeed) {
+ if (curfeed->path && curfeed->fp) {
+ fclose(curfeed->fp);
+ curfeed->fp = NULL;
+ }
+ }
+
+ if (f && f->path) {
+ if (!f->fp && !(f->fp = fopen(f->path, "rb")))
+ die("fopen: %s", f->path);
+ }
+
+ feed_setenv(f);
+
+ curfeed = f;
+}
+
+void
+feeds_load(struct feed *feeds, size_t nfeeds)
+{
+ struct feed *f;
+ size_t i;
+
+ if ((comparetime = time(NULL)) == -1)
+ die("time");
+ /* 1 day is old news */
+ comparetime -= 86400;
+
+ for (i = 0; i < nfeeds; i++) {
+ f = &feeds[i];
+
+ if (f->path) {
+ if (f->fp) {
+ if (fseek(f->fp, 0, SEEK_SET))
+ die("fseek: %s", f->path);
+ } else {
+ if (!(f->fp = fopen(f->path, "rb")))
+ die("fopen: %s", f->path);
+ }
+ }
+ if (!f->fp) {
+ /* reading from stdin, just recount new */
+ if (f == curfeed)
+ updatenewitems(f);
+ continue;
+ }
+
+ /* load first items, because of first selection or stdin. */
+ if (f == curfeed) {
+ feed_load(f, f->fp);
+ } else {
+ feed_count(f, f->fp);
+ if (f->path && f->fp) {
+ fclose(f->fp);
+ f->fp = NULL;
+ }
+ }
+ }
+}
+
+/* find row position of the feed if visible, else return -1 */
+off_t
+feeds_row_get(struct pane *p, struct feed *f)
+{
+ struct row *row;
+ struct feed *fr;
+ off_t pos;
+
+ for (pos = 0; pos < p->nrows; pos++) {
+ if (!(row = pane_row_get(p, pos)))
+ continue;
+ fr = row->data;
+ if (!strcmp(fr->name, f->name))
+ return pos;
+ }
+ return -1;
+}
+
+void
+feeds_reloadall(void)
+{
+ struct pane *p;
+ struct feed *f = NULL;
+ struct row *row;
+ off_t pos;
+
+ p = &panes[PaneFeeds];
+ if ((row = pane_row_get(p, p->pos)))
+ f = row->data;
+
+ pos = panes[PaneItems].pos; /* store numeric item position */
+ feeds_set(curfeed); /* close and reopen feed if possible */
+ urls_read();
+ feeds_load(feeds, nfeeds);
+ urls_free();
+ /* restore numeric item position */
+ pane_setpos(&panes[PaneItems], pos);
+ updatesidebar();
+ updatetitle();
+
+ /* try to find the same feed in the pane */
+ if (f && (pos = feeds_row_get(p, f)) != -1)
+ pane_setpos(p, pos);
+ else
+ pane_setpos(p, 0);
+}
+
+void
+feed_open_selected(struct pane *p)
+{
+ struct feed *f;
+ struct row *row;
+
+ if (!(row = pane_row_get(p, p->pos)))
+ return;
+ f = row->data;
+ feeds_set(f);
+ urls_read();
+ if (f->fp)
+ feed_load(f, f->fp);
+ urls_free();
+ /* redraw row: counts could be changed */
+ updatesidebar();
+ updatetitle();
+
+ if (layout == LayoutMonocle) {
+ selpane = PaneItems;
+ updategeom();
+ }
+}
+
+void
+feed_plumb_selected_item(struct pane *p, int field)
+{
+ struct row *row;
+ struct item *item;
+
+ if (!(row = pane_row_get(p, p->pos)))
+ return;
+ item = row->data;
+ markread(p, p->pos, p->pos, 1);
+ forkexec((char *[]) { plumbercmd, item->fields[field], NULL }, plumberia);
+}
+
+void
+feed_pipe_selected_item(struct pane *p)
+{
+ struct row *row;
+ struct item *item;
+
+ if (!(row = pane_row_get(p, p->pos)))
+ return;
+ item = row->data;
+ markread(p, p->pos, p->pos, 1);
+ pipeitem(pipercmd, item, -1, piperia);
+}
+
+void
+feed_yank_selected_item(struct pane *p, int field)
+{
+ struct row *row;
+ struct item *item;
+
+ if (!(row = pane_row_get(p, p->pos)))
+ return;
+ item = row->data;
+ pipeitem(yankercmd, item, field, yankeria);
+}
+
+/* calculate optimal (default) size */
+int
+getsidebarsizedefault(void)
+{
+ struct feed *feed;
+ size_t i;
+ int len, size;
+
+ switch (layout) {
+ case LayoutVertical:
+ for (i = 0, size = 0; i < nfeeds; i++) {
+ feed = &feeds[i];
+ len = snprintf(NULL, 0, " (%lu/%lu)",
+ feed->totalnew, feed->total) +
+ colw(feed->name);
+ if (len > size)
+ size = len;
+
+ if (onlynew && feed->totalnew == 0)
+ continue;
+ }
+ return MAX(MIN(win.width - 1, size), 0);
+ case LayoutHorizontal:
+ for (i = 0, size = 0; i < nfeeds; i++) {
+ feed = &feeds[i];
+ if (onlynew && feed->totalnew == 0)
+ continue;
+ size++;
+ }
+ return MAX(MIN((win.height - 1) / 2, size), 1);
+ }
+ return 0;
+}
+
+int
+getsidebarsize(void)
+{
+ int size;
+
+ if ((size = fixedsidebarsizes[layout]) < 0)
+ size = getsidebarsizedefault();
+ return size;
+}
+
+void
+adjustsidebarsize(int n)
+{
+ int size;
+
+ if ((size = fixedsidebarsizes[layout]) < 0)
+ size = getsidebarsizedefault();
+ if (n > 0) {
+ if ((layout == LayoutVertical && size + 1 < win.width) ||
+ (layout == LayoutHorizontal && size + 1 < win.height))
+ size++;
+ } else if (n < 0) {
+ if ((layout == LayoutVertical && size > 0) ||
+ (layout == LayoutHorizontal && size > 1))
+ size--;
+ }
+
+ if (size != fixedsidebarsizes[layout]) {
+ fixedsidebarsizes[layout] = size;
+ updategeom();
+ }
+}
+
+void
+updatesidebar(void)
+{
+ struct pane *p;
+ struct row *row;
+ struct feed *feed;
+ size_t i, nrows;
+ int oldvalue = 0, newvalue = 0;
+
+ p = &panes[PaneFeeds];
+ if (!p->rows)
+ p->rows = ecalloc(sizeof(p->rows[0]), nfeeds + 1);
+
+ switch (layout) {
+ case LayoutVertical:
+ oldvalue = p->width;
+ newvalue = getsidebarsize();
+ p->width = newvalue;
+ break;
+ case LayoutHorizontal:
+ oldvalue = p->height;
+ newvalue = getsidebarsize();
+ p->height = newvalue;
+ break;
+ }
+
+ nrows = 0;
+ for (i = 0; i < nfeeds; i++) {
+ feed = &feeds[i];
+
+ row = &(p->rows[nrows]);
+ row->bold = (feed->totalnew > 0);
+ row->data = feed;
+
+ if (onlynew && feed->totalnew == 0)
+ continue;
+
+ nrows++;
+ }
+ p->nrows = nrows;
+
+ if (oldvalue != newvalue)
+ updategeom();
+ else
+ p->dirty = 1;
+
+ if (!p->nrows)
+ p->pos = 0;
+ else if (p->pos >= p->nrows)
+ p->pos = p->nrows - 1;
+}
+
+void
+sighandler(int signo)
+{
+ switch (signo) {
+ case SIGHUP:
+ case SIGINT:
+ case SIGTERM:
+ case SIGWINCH:
+ /* SIGTERM is more important, do not override it */
+ if (sigstate != SIGTERM)
+ sigstate = signo;
+ break;
+ }
+}
+
+void
+alldirty(void)
+{
+ win.dirty = 1;
+ panes[PaneFeeds].dirty = 1;
+ panes[PaneItems].dirty = 1;
+ scrollbars[PaneFeeds].dirty = 1;
+ scrollbars[PaneItems].dirty = 1;
+ linebar.dirty = 1;
+ statusbar.dirty = 1;
+}
+
+void
+draw(void)
+{
+ struct row *row;
+ struct item *item;
+ size_t i;
+
+ if (win.dirty)
+ win.dirty = 0;
+
+ for (i = 0; i < LEN(panes); i++) {
+ pane_setfocus(&panes[i], i == selpane);
+ pane_draw(&panes[i]);
+
+ /* each pane has a scrollbar */
+ scrollbar_setfocus(&scrollbars[i], i == selpane);
+ scrollbar_update(&scrollbars[i],
+ panes[i].pos - (panes[i].pos % panes[i].height),
+ panes[i].nrows, panes[i].height);
+ scrollbar_draw(&scrollbars[i]);
+ }
+
+ linebar_draw(&linebar);
+
+ /* if item selection text changed then update the status text */
+ if ((row = pane_row_get(&panes[PaneItems], panes[PaneItems].pos))) {
+ item = row->data;
+ statusbar_update(&statusbar, item->fields[FieldLink]);
+ } else {
+ statusbar_update(&statusbar, "");
+ }
+ statusbar_draw(&statusbar);
+}
+
+void
+mousereport(int button, int release, int keymask, int x, int y)
+{
+ struct pane *p;
+ size_t i;
+ int changedpane, dblclick, pos;
+
+ if (!usemouse || release || button == -1)
+ return;
+
+ for (i = 0; i < LEN(panes); i++) {
+ p = &panes[i];
+ if (p->hidden || !p->width || !p->height)
+ continue;
+
+ /* these button actions are done regardless of the position */
+ switch (button) {
+ case 7: /* side-button: backward */
+ if (selpane == PaneFeeds)
+ return;
+ selpane = PaneFeeds;
+ if (layout == LayoutMonocle)
+ updategeom();
+ return;
+ case 8: /* side-button: forward */
+ if (selpane == PaneItems)
+ return;
+ selpane = PaneItems;
+ if (layout == LayoutMonocle)
+ updategeom();
+ return;
+ }
+
+ /* check if mouse position is in pane or in its scrollbar */
+ if (!(x >= p->x && x < p->x + p->width + (!scrollbars[i].hidden) &&
+ y >= p->y && y < p->y + p->height))
+ continue;
+
+ changedpane = (selpane != i);
+ selpane = i;
+ /* relative position on screen */
+ pos = y - p->y + p->pos - (p->pos % p->height);
+ dblclick = (pos == p->pos); /* clicking the same row twice */
+
+ switch (button) {
+ case 0: /* left-click */
+ if (!p->nrows || pos >= p->nrows)
+ break;
+ pane_setpos(p, pos);
+ if (i == PaneFeeds)
+ feed_open_selected(&panes[PaneFeeds]);
+ else if (i == PaneItems && dblclick && !changedpane)
+ feed_plumb_selected_item(&panes[PaneItems], FieldLink);
+ break;
+ case 2: /* right-click */
+ if (!p->nrows || pos >= p->nrows)
+ break;
+ pane_setpos(p, pos);
+ if (i == PaneItems)
+ feed_pipe_selected_item(&panes[PaneItems]);
+ break;
+ case 3: /* scroll up */
+ case 4: /* scroll down */
+ pane_scrollpage(p, button == 3 ? -1 : +1);
+ break;
+ }
+ return; /* do not bubble events */
+ }
+}
+
+/* Custom formatter for feed row. */
+char *
+feed_row_format(struct pane *p, struct row *row)
+{
+ /* static, reuse local buffers */
+ static char *bufw, *text;
+ static size_t bufwsize, textsize;
+ struct feed *feed;
+ size_t needsize;
+ char counts[128];
+ int len, w;
+
+ feed = row->data;
+
+ /* align counts to the right and pad the rest with spaces */
+ len = snprintf(counts, sizeof(counts), "(%lu/%lu)",
+ feed->totalnew, feed->total);
+ if (len > p->width)
+ w = p->width;
+ else
+ w = p->width - len;
+
+ needsize = (w + 1) * 4;
+ if (needsize > bufwsize) {
+ bufw = erealloc(bufw, needsize);
+ bufwsize = needsize;
+ }
+
+ needsize = bufwsize + sizeof(counts) + 1;
+ if (needsize > textsize) {
+ text = erealloc(text, needsize);
+ textsize = needsize;
+ }
+
+ if (utf8pad(bufw, bufwsize, feed->name, w, ' ') != -1)
+ snprintf(text, textsize, "%s%s", bufw, counts);
+ else
+ text[0] = '\0';
+
+ return text;
+}
+
+int
+feed_row_match(struct pane *p, struct row *row, const char *s)
+{
+ struct feed *feed;
+
+ feed = row->data;
+
+ return (strcasestr(feed->name, s) != NULL);
+}
+
+struct row *
+item_row_get(struct pane *p, off_t pos)
+{
+ struct row *itemrow;
+ struct item *item;
+ struct feed *f;
+ char *line = NULL;
+ size_t linesize = 0;
+ ssize_t linelen;
+
+ itemrow = p->rows + pos;
+ item = itemrow->data;
+
+ f = curfeed;
+ if (f && f->path && f->fp && !item->line) {
+ if (fseek(f->fp, item->offset, SEEK_SET))
+ die("fseek: %s", f->path);
+
+ if ((linelen = getline(&line, &linesize, f->fp)) <= 0) {
+ if (ferror(f->fp))
+ die("getline: %s", f->path);
+ return NULL;
+ }
+
+ if (line[linelen - 1] == '\n')
+ line[--linelen] = '\0';
+
+ linetoitem(estrdup(line), item);
+ free(line);
+
+ itemrow->data = item;
+ }
+ return itemrow;
+}
+
+/* Custom formatter for item row. */
+char *
+item_row_format(struct pane *p, struct row *row)
+{
+ /* static, reuse local buffers */
+ static char *text;
+ static size_t textsize;
+ struct item *item;
+ struct tm tm;
+ size_t needsize;
+
+ item = row->data;
+
+ needsize = strlen(item->fields[FieldTitle]) + 21;
+ if (needsize > textsize) {
+ text = erealloc(text, needsize);
+ textsize = needsize;
+ }
+
+ if (item->timeok && localtime_r(&(item->timestamp), &tm)) {
+ snprintf(text, textsize, "%c %04d-%02d-%02d %02d:%02d %s",
+ item->fields[FieldEnclosure][0] ? '@' : ' ',
+ tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
+ tm.tm_hour, tm.tm_min, item->fields[FieldTitle]);
+ } else {
+ snprintf(text, textsize, "%c %s",
+ item->fields[FieldEnclosure][0] ? '@' : ' ',
+ item->fields[FieldTitle]);
+ }
+
+ return text;
+}
+
+void
+markread(struct pane *p, off_t from, off_t to, int isread)
+{
+ struct row *row;
+ struct item *item;
+ FILE *fp;
+ off_t i;
+ const char *cmd;
+ int isnew = !isread, pid, wpid, status, visstart;
+
+ if (!urlfile || !p->nrows)
+ return;
+
+ cmd = isread ? markreadcmd : markunreadcmd;
+
+ switch ((pid = fork())) {
+ case -1:
+ die("fork");
+ case 0:
+ dup2(devnullfd, 1);
+ dup2(devnullfd, 2);
+
+ errno = 0;
+ if (!(fp = popen(cmd, "w")))
+ die("popen: %s", cmd);
+
+ for (i = from; i <= to && i < p->nrows; i++) {
+ /* do not use pane_row_get: no need for lazyload */
+ row = &(p->rows[i]);
+ item = row->data;
+ if (item->isnew != isnew) {
+ fputs(item->matchnew, fp);
+ putc('\n', fp);
+ }
+ }
+ status = pclose(fp);
+ status = WIFEXITED(status) ? WEXITSTATUS(status) : 127;
+ _exit(status);
+ default:
+ while ((wpid = wait(&status)) >= 0 && wpid != pid)
+ ;
+
+ /* fail: exit statuscode was non-zero */
+ if (status)
+ break;
+
+ visstart = p->pos - (p->pos % p->height); /* visible start */
+ for (i = from; i <= to && i < p->nrows; i++) {
+ row = &(p->rows[i]);
+ item = row->data;
+ if (item->isnew == isnew)
+ continue;
+
+ row->bold = item->isnew = isnew;
+ curfeed->totalnew += isnew ? 1 : -1;
+
+ /* draw if visible on screen */
+ if (i >= visstart && i < visstart + p->height)
+ pane_row_draw(p, i, i == p->pos);
+ }
+ updatesidebar();
+ updatetitle();
+ }
+}
+
+int
+urls_cmp(const void *v1, const void *v2)
+{
+ return strcmp(*((char **)v1), *((char **)v2));
+}
+
+int
+urls_isnew(const char *url)
+{
+ return bsearch(&url, urls, nurls, sizeof(char *), urls_cmp) == NULL;
+}
+
+void
+urls_free(void)
+{
+ while (nurls > 0)
+ free(urls[--nurls]);
+ free(urls);
+ urls = NULL;
+ nurls = 0;
+}
+
+void
+urls_read(void)
+{
+ FILE *fp;
+ char *line = NULL;
+ size_t linesiz = 0, cap = 0;
+ ssize_t n;
+
+ urls_free();
+
+ if (!urlfile)
+ return;
+ if (!(fp = fopen(urlfile, "rb")))
+ die("fopen: %s", urlfile);
+
+ while ((n = getline(&line, &linesiz, fp)) > 0) {
+ if (line[n - 1] == '\n')
+ line[--n] = '\0';
+ if (nurls + 1 >= cap) {
+ cap = cap ? cap * 2 : 16;
+ urls = erealloc(urls, cap * sizeof(char *));
+ }
+ urls[nurls++] = estrdup(line);
+ }
+ if (ferror(fp))
+ die("getline: %s", urlfile);
+ fclose(fp);
+ free(line);
+
+ qsort(urls, nurls, sizeof(char *), urls_cmp);
+}
+
+int
+main(int argc, char *argv[])
+{
+ struct pane *p;
+ struct feed *f;
+ struct row *row;
+ size_t i;
+ char *name, *tmp;
+ char *search = NULL; /* search text */
+ int button, ch, fd, keymask, release, x, y;
+ off_t pos;
+
+#ifdef __OpenBSD__
+ if (pledge("stdio rpath tty proc exec", NULL) == -1)
+ die("pledge");
+#endif
+
+ setlocale(LC_CTYPE, "");
+
+ if ((tmp = getenv("SFEED_PLUMBER")))
+ plumbercmd = tmp;
+ if ((tmp = getenv("SFEED_PIPER")))
+ pipercmd = tmp;
+ if ((tmp = getenv("SFEED_YANKER")))
+ yankercmd = tmp;
+ if ((tmp = getenv("SFEED_PLUMBER_INTERACTIVE")))
+ plumberia = !strcmp(tmp, "1");
+ if ((tmp = getenv("SFEED_PIPER_INTERACTIVE")))
+ piperia = !strcmp(tmp, "1");
+ if ((tmp = getenv("SFEED_YANKER_INTERACTIVE")))
+ yankeria = !strcmp(tmp, "1");
+ if ((tmp = getenv("SFEED_MARK_READ")))
+ markreadcmd = tmp;
+ if ((tmp = getenv("SFEED_MARK_UNREAD")))
+ markunreadcmd = tmp;
+ if ((tmp = getenv("SFEED_LAZYLOAD")))
+ lazyload = !strcmp(tmp, "1");
+ urlfile = getenv("SFEED_URL_FILE"); /* can be NULL */
+ cmdenv = getenv("SFEED_AUTOCMD"); /* can be NULL */
+
+ setlayout(argc <= 1 ? LayoutMonocle : LayoutVertical);
+ selpane = layout == LayoutMonocle ? PaneItems : PaneFeeds;
+
+ panes[PaneFeeds].row_format = feed_row_format;
+ panes[PaneFeeds].row_match = feed_row_match;
+ panes[PaneItems].row_format = item_row_format;
+ if (lazyload)
+ panes[PaneItems].row_get = item_row_get;
+
+ feeds = ecalloc(argc, sizeof(struct feed));
+ if (argc == 1) {
+ nfeeds = 1;
+ f = &feeds[0];
+ f->name = "stdin";
+ if (!(f->fp = fdopen(0, "rb")))
+ die("fdopen");
+ } else {
+ for (i = 1; i < argc; i++) {
+ f = &feeds[i - 1];
+ f->path = argv[i];
+ name = ((name = strrchr(argv[i], '/'))) ? name + 1 : argv[i];
+ f->name = name;
+ }
+ nfeeds = argc - 1;
+ }
+ feeds_set(&feeds[0]);
+ urls_read();
+ feeds_load(feeds, nfeeds);
+ urls_free();
+
+ if (!isatty(0)) {
+ if ((fd = open("/dev/tty", O_RDONLY)) == -1)
+ die("open: /dev/tty");
+ if (dup2(fd, 0) == -1)
+ die("dup2(%d, 0): /dev/tty -> stdin", fd);
+ close(fd);
+ }
+ if (argc == 1)
+ feeds[0].fp = NULL;
+
+ if ((devnullfd = open("/dev/null", O_WRONLY)) == -1)
+ die("open: /dev/null");
+
+ init();
+ updatesidebar();
+ updategeom();
+ updatetitle();
+ draw();
+
+ while (1) {
+ if ((ch = readch()) < 0)
+ goto event;
+ switch (ch) {
+ case '\x1b':
+ if ((ch = readch()) < 0)
+ goto event;
+ if (ch != '[' && ch != 'O')
+ continue; /* unhandled */
+ if ((ch = readch()) < 0)
+ goto event;
+ switch (ch) {
+ case 'M': /* mouse: X10 encoding */
+ if ((ch = readch()) < 0)
+ goto event;
+ button = ch - 32;
+ if ((ch = readch()) < 0)
+ goto event;
+ x = ch - 32;
+ if ((ch = readch()) < 0)
+ goto event;
+ y = ch - 32;
+
+ keymask = button & (4 | 8 | 16); /* shift, meta, ctrl */
+ button &= ~keymask; /* unset key mask */
+
+ /* button numbers (0 - 2) encoded in lowest 2 bits
+ release does not indicate which button (so set to 0).
+ Handle extended buttons like scrollwheels
+ and side-buttons by each range. */
+ release = 0;
+ if (button == 3) {
+ button = -1;
+ release = 1;
+ } else if (button >= 128) {
+ button -= 121;
+ } else if (button >= 64) {
+ button -= 61;
+ }
+ mousereport(button, release, keymask, x - 1, y - 1);
+ break;
+ case '<': /* mouse: SGR encoding */
+ for (button = 0; ; button *= 10, button += ch - '0') {
+ if ((ch = readch()) < 0)
+ goto event;
+ else if (ch == ';')
+ break;
+ }
+ for (x = 0; ; x *= 10, x += ch - '0') {
+ if ((ch = readch()) < 0)
+ goto event;
+ else if (ch == ';')
+ break;
+ }
+ for (y = 0; ; y *= 10, y += ch - '0') {
+ if ((ch = readch()) < 0)
+ goto event;
+ else if (ch == 'm' || ch == 'M')
+ break; /* release or press */
+ }
+ release = ch == 'm';
+ keymask = button & (4 | 8 | 16); /* shift, meta, ctrl */
+ button &= ~keymask; /* unset key mask */
+
+ if (button >= 128)
+ button -= 121;
+ else if (button >= 64)
+ button -= 61;
+
+ mousereport(button, release, keymask, x - 1, y - 1);
+ break;
+ case 'A': goto keyup; /* arrow up */
+ case 'B': goto keydown; /* arrow down */
+ case 'C': goto keyright; /* arrow left */
+ case 'D': goto keyleft; /* arrow right */
+ case 'F': goto endpos; /* end */
+ case 'H': goto startpos; /* home */
+ case '4': /* end */
+ if ((ch = readch()) < 0)
+ goto event;
+ if (ch == '~')
+ goto endpos;
+ continue;
+ case '5': /* page up */
+ if ((ch = readch()) < 0)
+ goto event;
+ if (ch == '~')
+ goto prevpage;
+ continue;
+ case '6': /* page down */
+ if ((ch = readch()) < 0)
+ goto event;
+ if (ch == '~')
+ goto nextpage;
+ continue;
+ }
+ break;
+keyup:
+ case 'k':
+ case 'K':
+ pane_scrolln(&panes[selpane], -1);
+ if (ch == 'K')
+ goto openitem;
+ break;
+keydown:
+ case 'j':
+ case 'J':
+ pane_scrolln(&panes[selpane], +1);
+ if (ch == 'J')
+ goto openitem;
+ break;
+keyleft:
+ case 'h':
+ if (selpane == PaneFeeds)
+ break;
+ selpane = PaneFeeds;
+ if (layout == LayoutMonocle)
+ updategeom();
+ break;
+keyright:
+ case 'l':
+ if (selpane == PaneItems)
+ break;
+ selpane = PaneItems;
+ if (layout == LayoutMonocle)
+ updategeom();
+ break;
+ case '\t':
+ selpane = selpane == PaneFeeds ? PaneItems : PaneFeeds;
+ if (layout == LayoutMonocle)
+ updategeom();
+ break;
+startpos:
+ case 'g':
+ pane_setpos(&panes[selpane], 0);
+ break;
+endpos:
+ case 'G':
+ p = &panes[selpane];
+ if (p->nrows)
+ pane_setpos(p, p->nrows - 1);
+ break;
+prevpage:
+ case 2: /* ^B */
+ pane_scrollpage(&panes[selpane], -1);
+ break;
+nextpage:
+ case ' ':
+ case 6: /* ^F */
+ pane_scrollpage(&panes[selpane], +1);
+ break;
+ case '[':
+ case ']':
+ pane_scrolln(&panes[PaneFeeds], ch == '[' ? -1 : +1);
+ feed_open_selected(&panes[PaneFeeds]);
+ break;
+ case '/': /* new search (forward) */
+ case '?': /* new search (backward) */
+ case 'n': /* search again (forward) */
+ case 'N': /* search again (backward) */
+ p = &panes[selpane];
+
+ /* prompt for new input */
+ if (ch == '?' || ch == '/') {
+ tmp = ch == '?' ? "backward" : "forward";
+ free(search);
+ search = uiprompt(statusbar.x, statusbar.y,
+ "Search (%s):", tmp);
+ statusbar.dirty = 1;
+ }
+ if (!search || !p->nrows)
+ break;
+
+ if (ch == '/' || ch == 'n') {
+ /* forward */
+ for (pos = p->pos + 1; pos < p->nrows; pos++) {
+ if (pane_row_match(p, pane_row_get(p, pos), search)) {
+ pane_setpos(p, pos);
+ break;
+ }
+ }
+ } else {
+ /* backward */
+ for (pos = p->pos - 1; pos >= 0; pos--) {
+ if (pane_row_match(p, pane_row_get(p, pos), search)) {
+ pane_setpos(p, pos);
+ break;
+ }
+ }
+ }
+ break;
+ case 12: /* ^L, redraw */
+ alldirty();
+ break;
+ case 'R': /* reload all files */
+ feeds_reloadall();
+ break;
+ case 'a': /* attachment */
+ case 'e': /* enclosure */
+ case '@':
+ if (selpane == PaneItems)
+ feed_plumb_selected_item(&panes[selpane], FieldEnclosure);
+ break;
+ case 'm': /* toggle mouse mode */
+ usemouse = !usemouse;
+ mousemode(usemouse);
+ break;
+ case '<': /* decrease fixed sidebar width */
+ case '>': /* increase fixed sidebar width */
+ adjustsidebarsize(ch == '<' ? -1 : +1);
+ break;
+ case '=': /* reset fixed sidebar to automatic size */
+ fixedsidebarsizes[layout] = -1;
+ updategeom();
+ break;
+ case 't': /* toggle showing only new in sidebar */
+ p = &panes[PaneFeeds];
+ if ((row = pane_row_get(p, p->pos)))
+ f = row->data;
+ else
+ f = NULL;
+
+ onlynew = !onlynew;
+ updatesidebar();
+
+ /* try to find the same feed in the pane */
+ if (f && f->totalnew &&
+ (pos = feeds_row_get(p, f)) != -1)
+ pane_setpos(p, pos);
+ else
+ pane_setpos(p, 0);
+ break;
+ case 'o': /* feeds: load, items: plumb URL */
+ case '\n':
+openitem:
+ if (selpane == PaneFeeds && panes[selpane].nrows)
+ feed_open_selected(&panes[selpane]);
+ else if (selpane == PaneItems && panes[selpane].nrows)
+ feed_plumb_selected_item(&panes[selpane], FieldLink);
+ break;
+ case 'c': /* items: pipe TSV line to program */
+ case 'p':
+ case '|':
+ if (selpane == PaneItems)
+ feed_pipe_selected_item(&panes[selpane]);
+ break;
+ case 'y': /* yank: pipe TSV field to yank URL to clipboard */
+ case 'E': /* yank: pipe TSV field to yank enclosure to clipboard */
+ if (selpane == PaneItems)
+ feed_yank_selected_item(&panes[selpane],
+ ch == 'y' ? FieldLink : FieldEnclosure);
+ break;
+ case 'f': /* mark all read */
+ case 'F': /* mark all unread */
+ if (panes[PaneItems].nrows) {
+ p = &panes[PaneItems];
+ markread(p, 0, p->nrows - 1, ch == 'f');
+ }
+ break;
+ case 'r': /* mark item as read */
+ case 'u': /* mark item as unread */
+ if (selpane == PaneItems && panes[selpane].nrows) {
+ p = &panes[selpane];
+ markread(p, p->pos, p->pos, ch == 'r');
+ }
+ break;
+ case 's': /* toggle layout between monocle or non-monocle */
+ setlayout(layout == LayoutMonocle ? prevlayout : LayoutMonocle);
+ updategeom();
+ break;
+ case '1': /* vertical layout */
+ case '2': /* horizontal layout */
+ case '3': /* monocle layout */
+ setlayout(ch - '1');
+ updategeom();
+ break;
+ case 4: /* EOT */
+ case 'q': goto end;
+ }
+event:
+ if (ch == EOF)
+ goto end;
+ else if (ch == -3 && sigstate == 0)
+ continue; /* just a time-out, nothing to do */
+
+ switch (sigstate) {
+ case SIGHUP:
+ feeds_reloadall();
+ sigstate = 0;
+ break;
+ case SIGINT:
+ case SIGTERM:
+ cleanup();
+ _exit(128 + sigstate);
+ case SIGWINCH:
+ resizewin();
+ updategeom();
+ sigstate = 0;
+ break;
+ }
+
+ draw();
+ }
+end:
+ cleanup();
+
+ return 0;
+}
diff --git a/sfeed_markread b/sfeed_markread
new file mode 100755
index 0000000..d0f80e2
--- /dev/null
+++ b/sfeed_markread
@@ -0,0 +1,35 @@
+#!/bin/sh
+# Mark items as read/unread: the input is the read / unread URL per line.
+
+usage() {
+ echo "usage: $0 <read|unread> [urlfile]" >&2
+ echo "" >&2
+ echo "An urlfile must be specified as an argument or with the environment variable \$SFEED_URL_FILE" >&2
+ exit 1
+}
+
+urlfile="${2:-${SFEED_URL_FILE}}"
+if test -z "${urlfile}"; then
+ usage
+fi
+
+case "$1" in
+read)
+ cat >> "${urlfile}"
+ ;;
+unread)
+ tmp=$(mktemp)
+ trap "rm -f ${tmp}" EXIT
+ test -f "${urlfile}" || touch "${urlfile}" 2>/dev/null
+ LC_CTYPE=C awk -F '\t' '
+ { FILENR += (FNR == 1) }
+ FILENR == 1 { urls[$0] = 1 }
+ FILENR == 2 { if (!urls[$0]) { print $0 } }
+ END { exit(FILENR != 2) }' \
+ "-" "${urlfile}" > "${tmp}" && \
+ cp "${tmp}" "${urlfile}"
+ ;;
+*)
+ usage
+ ;;
+esac
diff --git a/sfeed_markread.1 b/sfeed_markread.1
new file mode 100644
index 0000000..17504c4
--- /dev/null
+++ b/sfeed_markread.1
@@ -0,0 +1,47 @@
+.Dd July 25, 2021
+.Dt SFEED_MARKREAD 1
+.Os
+.Sh NAME
+.Nm sfeed_markread
+.Nd mark items as read/unread
+.Sh SYNOPSIS
+.Nm
+.Ar read | Ar unread
+.Op Ar urlfile
+.Sh DESCRIPTION
+.Nm
+reads a plain-text list of URLs from stdin.
+The file format for the list of URLs is one URL per line.
+.Nm
+will write to the file specified as
+.Ar urlfile
+or with the environment variable
+.Ev SFEED_URL_FILE .
+The
+.Nm
+script can be used by
+.Xr sfeed_curses 1
+to mark items as read and unread.
+.Sh ENVIRONMENT VARIABLES
+.Bl -tag -width Ds
+.It Ev SFEED_URL_FILE
+This variable can be set to use as the path to the file containing a
+plain-text list of read URLs.
+.El
+.Sh EXIT STATUS
+.Ex -std
+.Sh EXAMPLES
+.Bd -literal
+export SFEED_URL_FILE="$HOME/.sfeed/urls"
+echo 'https://codemadness.org/sfeed.html' | sfeed_markread read
+.Ed
+.Pp
+or
+.Bd -literal
+echo 'https://codemadness.org/sfeed.html' | sfeed_markread read ~/.sfeed/urls
+.Ed
+.Sh SEE ALSO
+.Xr awk 1 ,
+.Xr sfeed_curses 1
+.Sh AUTHORS
+.An Hiltjo Posthuma Aq Mt hiltjo@codemadness.org
diff --git a/themes/mono.h b/themes/mono.h
new file mode 100644
index 0000000..586ede0
--- /dev/null
+++ b/themes/mono.h
@@ -0,0 +1,13 @@
+/* default mono theme */
+#define THEME_ITEM_NORMAL() do { } while(0)
+#define THEME_ITEM_FOCUS() do { } while(0)
+#define THEME_ITEM_BOLD() do { attrmode(ATTR_BOLD_ON); } while(0)
+#define THEME_ITEM_SELECTED() do { if (p->focused) attrmode(ATTR_REVERSE_ON); } while(0)
+#define THEME_SCROLLBAR_FOCUS() do { } while(0)
+#define THEME_SCROLLBAR_NORMAL() do { attrmode(ATTR_FAINT_ON); } while(0)
+#define THEME_SCROLLBAR_TICK_FOCUS() do { attrmode(ATTR_REVERSE_ON); } while(0)
+#define THEME_SCROLLBAR_TICK_NORMAL() do { attrmode(ATTR_REVERSE_ON); } while(0)
+#define THEME_LINEBAR() do { attrmode(ATTR_FAINT_ON); } while(0)
+#define THEME_STATUSBAR() do { attrmode(ATTR_REVERSE_ON); } while(0)
+#define THEME_INPUT_LABEL() do { attrmode(ATTR_REVERSE_ON); } while(0)
+#define THEME_INPUT_NORMAL() do { } while(0)
diff --git a/themes/mono_highlight.h b/themes/mono_highlight.h
new file mode 100644
index 0000000..180f651
--- /dev/null
+++ b/themes/mono_highlight.h
@@ -0,0 +1,15 @@
+/* mono theme with highlighting of the active panel.
+ The faint attribute may not work on all terminals though.
+ The combination bold with faint generally does not work either. */
+#define THEME_ITEM_NORMAL() do { } while(0)
+#define THEME_ITEM_FOCUS() do { } while(0)
+#define THEME_ITEM_BOLD() do { if (p->focused || !selected) attrmode(ATTR_BOLD_ON); } while(0)
+#define THEME_ITEM_SELECTED() do { attrmode(ATTR_REVERSE_ON); if (!p->focused) attrmode(ATTR_FAINT_ON); } while(0)
+#define THEME_SCROLLBAR_FOCUS() do { } while(0)
+#define THEME_SCROLLBAR_NORMAL() do { attrmode(ATTR_FAINT_ON); } while(0)
+#define THEME_SCROLLBAR_TICK_FOCUS() do { attrmode(ATTR_REVERSE_ON); } while(0)
+#define THEME_SCROLLBAR_TICK_NORMAL() do { attrmode(ATTR_REVERSE_ON); } while(0)
+#define THEME_LINEBAR() do { attrmode(ATTR_FAINT_ON); } while(0)
+#define THEME_STATUSBAR() do { attrmode(ATTR_REVERSE_ON); } while(0)
+#define THEME_INPUT_LABEL() do { attrmode(ATTR_REVERSE_ON); } while(0)
+#define THEME_INPUT_NORMAL() do { } while(0)
diff --git a/themes/newsboat.h b/themes/newsboat.h
new file mode 100644
index 0000000..b00111d
--- /dev/null
+++ b/themes/newsboat.h
@@ -0,0 +1,13 @@
+/* newsboat-like (blue, yellow) */
+#define THEME_ITEM_NORMAL() do { } while(0)
+#define THEME_ITEM_FOCUS() do { } while(0)
+#define THEME_ITEM_BOLD() do { attrmode(ATTR_BOLD_ON); } while(0)
+#define THEME_ITEM_SELECTED() do { if (p->focused) ttywrite("\x1b[93;44m"); } while(0) /* bright yellow fg, blue bg */
+#define THEME_SCROLLBAR_FOCUS() do { ttywrite("\x1b[34m"); } while(0) /* blue fg */
+#define THEME_SCROLLBAR_NORMAL() do { ttywrite("\x1b[34m"); } while(0)
+#define THEME_SCROLLBAR_TICK_FOCUS() do { ttywrite("\x1b[44m"); } while(0) /* blue bg */
+#define THEME_SCROLLBAR_TICK_NORMAL() do { ttywrite("\x1b[44m"); } while(0)
+#define THEME_LINEBAR() do { ttywrite("\x1b[34m"); } while(0)
+#define THEME_STATUSBAR() do { attrmode(ATTR_BOLD_ON); ttywrite("\x1b[93;44m"); } while(0)
+#define THEME_INPUT_LABEL() do { } while(0)
+#define THEME_INPUT_NORMAL() do { } while(0)
diff --git a/themes/templeos.h b/themes/templeos.h
new file mode 100644
index 0000000..7f9d770
--- /dev/null
+++ b/themes/templeos.h
@@ -0,0 +1,24 @@
+/* TempleOS-like (for fun and god) */
+/* set true-color foreground / background, Terry would've preferred ANSI */
+#define SETFGCOLOR(r,g,b) ttywritef("\x1b[38;2;%d;%d;%dm", r, g, b)
+#define SETBGCOLOR(r,g,b) ttywritef("\x1b[48;2;%d;%d;%dm", r, g, b)
+
+#define THEME_ITEM_NORMAL() do { SETFGCOLOR(0x00, 0x00, 0xaa); SETBGCOLOR(0xff, 0xff, 0xff); } while(0)
+#define THEME_ITEM_FOCUS() do { SETFGCOLOR(0x00, 0x00, 0xaa); SETBGCOLOR(0xff, 0xff, 0xff); } while(0)
+#define THEME_ITEM_BOLD() do { attrmode(ATTR_BOLD_ON); SETFGCOLOR(0xaa, 0x00, 0x00); SETBGCOLOR(0xff, 0xff, 0xff); } while(0)
+#define THEME_ITEM_SELECTED() do { if (p->focused) attrmode(ATTR_REVERSE_ON); } while(0)
+#define THEME_SCROLLBAR_FOCUS() do { SETFGCOLOR(0x00, 0x00, 0xaa); SETBGCOLOR(0xff, 0xff, 0xff); } while(0)
+#define THEME_SCROLLBAR_NORMAL() do { SETFGCOLOR(0x00, 0x00, 0xaa); SETBGCOLOR(0xff, 0xff, 0xff); } while(0)
+#define THEME_SCROLLBAR_TICK_FOCUS() do { SETBGCOLOR(0x00, 0x00, 0xaa); SETFGCOLOR(0xff, 0xff, 0xff); } while(0)
+#define THEME_SCROLLBAR_TICK_NORMAL() do { SETBGCOLOR(0x00, 0x00, 0xaa); SETFGCOLOR(0xff, 0xff, 0xff); } while(0)
+#define THEME_LINEBAR() do { SETFGCOLOR(0x00, 0x00, 0xaa); SETBGCOLOR(0xff, 0xff, 0xff); } while(0)
+#define THEME_STATUSBAR() do { ttywrite("\x1b[6m"); SETBGCOLOR(0x00, 0x00, 0xaa); SETFGCOLOR(0xff, 0xff, 0xff); } while(0) /* blink statusbar */
+#define THEME_INPUT_LABEL() do { SETFGCOLOR(0x00, 0x00, 0xaa); SETBGCOLOR(0xff, 0xff, 0xff); } while(0)
+#define THEME_INPUT_NORMAL() do { SETFGCOLOR(0x00, 0x00, 0xaa); SETBGCOLOR(0xff, 0xff, 0xff); } while(0)
+
+#undef SCROLLBAR_SYMBOL_BAR
+#define SCROLLBAR_SYMBOL_BAR "\xe2\x95\x91" /* symbol: "double vertical" */
+#undef LINEBAR_SYMBOL_BAR
+#define LINEBAR_SYMBOL_BAR "\xe2\x95\x90" /* symbol: "double horizontal" */
+#undef LINEBAR_SYMBOL_RIGHT
+#define LINEBAR_SYMBOL_RIGHT "\xe2\x95\xa3" /* symbol: "double vertical and left" */
--
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