replaced i3status with i3blocks-gaps

6 years ago · 15a8f7e908
parent 7474a25386
commit 15a8f7e908
34 changed files with 3603 additions and 1 deletions
--- a/pack.csv
+++ b/pack.csv
@ -14,6 +14,7 @@ A,P,intel-ucode,Microcode update files for Intel CPUs
 L,P,acpi,Client for battery power and thermal readings
 L,P,acpid,A daemon for delivering ACPI power management events with netlink support
 A,P,openssh,Premier connectivity tool for remote login with the SSH protocol
 A,P,smbclient,sambaclient to access network shares
 # Package management
 A,P,reflector,A script to retrieve and filter the latest Pacman mirror list.
@ -37,7 +38,8 @@ A,M,st,Terminal Emulator compiled manually from dotfiles repo
 # Window Management and eyecandy
 A,P,i3-gaps,A fork of i3wm tiling window manager with more features including gaps
 A,P,i3bar,statusbar which comes with i3
-A,P,i3status,sends systeminformation to the i3bar
+# A,P,i3status,sends systeminformation to the i3bar
 A,M,i3blocks-gaps,sends systeminformation to the i3bar
 A,P,dmenu,Generic menu for X
 A,P,feh,Image toolbelt
--- a/packages/i3blocks-gaps/.travis.yml
+++ b/packages/i3blocks-gaps/.travis.yml
@ -0,0 +1,11 @@
 language: c
 env:
  - TARGET=all
  - TARGET=debug
 compiler:
  - gcc
 script:
  - make $TARGET
--- a/packages/i3blocks-gaps/CHANGELOG.md
+++ b/packages/i3blocks-gaps/CHANGELOG.md
@ -0,0 +1,37 @@
 # CHANGELOG
 ## master
 ## 1.4
  * Several scripts improvements and additions.
  * Add support for the "markup" property (GH #94).
  * Merge contrib scripts into the defaults (GH #36).
  * Add support for persistent blocks (GH #85).
  * Add support for JSON output format (GH #85).
 ## 1.3
  * Fix click checking (GH #34).
  * Use an alarm (if needed), which is more accurate.
  * Use real-time signals (SIGRTMIN+1 to SIGRTMAX) for blocks, deprecate 
  SIGUSR1 and SIGUSR2.
  * Implement asynchronous block updates (GH #23).
  * Now check for config file ~/.config/i3blocks/config (or
  $XDG_CONFIG_HOME/i3blocks/config if set) before ~/.i3blocks.conf (GH #32), 
  and similar with $XDG_CONFIG_DIRS.
  * Add a cpu usage script (GH #11).
 ## 1.2
  * Always define env variables related to clicks. Thus, set them to an empty 
  string when no click happened (GH #9).
 ## 1.1
  * Change return code for urgency to 33 (GH #8).
  * Do not setup stdin if it refers to a tty (GH #7).
 ## 1.0
 Initial release
--- a/packages/i3blocks-gaps/COPYING
+++ b/packages/i3blocks-gaps/COPYING
@ -0,0 +1,674 @@
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 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
 THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
 GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
 USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
 DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
 PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
 EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
 SUCH DAMAGES.
  17. Interpretation of Sections 15 and 16.
  If the disclaimer of warranty and limitation of liability provided
 above cannot be given local legal effect according to their terms,
 reviewing courts shall apply local law that most closely approximates
 an absolute waiver of all civil liability in connection with the
 Program, unless a warranty or assumption of liability accompanies a
 copy of the Program in return for a fee.
                     END OF TERMS AND CONDITIONS
            How to Apply These Terms to Your New Programs
  If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it
 free software which everyone can redistribute and change under these terms.
  To do so, attach the following notices to the program.  It is safest
 to attach them to the start of each source file to most effectively
 state the exclusion of warranty; and each file should have at least
 the "copyright" line and a pointer to where the full notice is found.
    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>
    This program 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 3 of the License, or
    (at your option) any later version.
    This program 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 <http://www.gnu.org/licenses/>.
 Also add information on how to contact you by electronic and paper mail.
  If the program does terminal interaction, make it output a short
 notice like this when it starts in an interactive mode:
    <program>  Copyright (C) <year>  <name of author>
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.
 The hypothetical commands `show w' and `show c' should show the appropriate
 parts of the General Public License.  Of course, your program's commands
 might be different; for a GUI interface, you would use an "about box".
  You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU GPL, see
 <http://www.gnu.org/licenses/>.
  The GNU General Public License does not permit incorporating your program
 into proprietary programs.  If your program is a subroutine library, you
 may consider it more useful to permit linking proprietary applications with
 the library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.  But first, please read
 <http://www.gnu.org/philosophy/why-not-lgpl.html>.
--- a/packages/i3blocks-gaps/Makefile
+++ b/packages/i3blocks-gaps/Makefile
@ -0,0 +1,86 @@
 RELEASE_VERSION = 1.4
 ifndef PREFIX
  PREFIX=/usr/local
 endif
 ifndef SYSCONFDIR
  ifeq ($(PREFIX),/usr)
    SYSCONFDIR=/etc
  else
    SYSCONFDIR=$(PREFIX)/etc
  endif
 endif
 ifndef DATAROOTDIR
  DATAROOTDIR=$(PREFIX)/share
 endif
 ifndef LIBEXECDIR
  LIBEXECDIR=$(PREFIX)/libexec
 endif
 ifndef VERSION
  VERSION = $(shell git describe --tags --always 2> /dev/null)
  ifeq ($(strip $(VERSION)),)
    VERSION = $(RELEASE_VERSION)
  endif
 endif
 PROGRAM = i3blocks
 CPPFLAGS += -DSYSCONFDIR=\"$(SYSCONFDIR)\"
 CPPFLAGS += -DVERSION=\"${VERSION}\"
 CFLAGS += -std=gnu99 -Iinclude -Wall -Werror=format-security
 OBJS := $(sort $(wildcard src/*.c))
 OBJS := $(OBJS:.c=.o)
 %.o: %.c %.h
 	$(CC) $(CPPFLAGS) $(CFLAGS) -c -o $@ $<
 	@echo " CC $<"
 all: $(PROGRAM)
 debug: CPPFLAGS += -DDEBUG
 debug: CFLAGS += -g
 debug: $(PROGRAM)
 $(PROGRAM): ${OBJS}
 	$(CC) $(LDFLAGS) -o $@ $^
 	@echo " LD $@"
 man: $(PROGRAM).1
 $(PROGRAM).1: $(PROGRAM).1.md
 	pandoc --to man --standalone --output $@ $<
 clean:
 	rm -f src/*.o $(PROGRAM)
 install: all
 	install -m 755 -d $(DESTDIR)$(PREFIX)/bin
 	install -m 755 -d $(DESTDIR)$(SYSCONFDIR)
 	install -m 755 -d $(DESTDIR)$(LIBEXECDIR)/$(PROGRAM)
 	install -m 755 $(PROGRAM) $(DESTDIR)$(PREFIX)/bin/$(PROGRAM)
 	sed 's,$$SCRIPT_DIR,$(LIBEXECDIR)/$(PROGRAM),' $(PROGRAM).conf > $(DESTDIR)$(SYSCONFDIR)/$(PROGRAM).conf
 	chmod 644 $(DESTDIR)$(SYSCONFDIR)/$(PROGRAM).conf
 	install -m 755 scripts/* $(DESTDIR)$(LIBEXECDIR)/$(PROGRAM)/
 install-man: man
 	install -m 755 -d $(DESTDIR)$(DATAROOTDIR)/man/man1
 	install -m 644 $(PROGRAM).1 $(DESTDIR)$(DATAROOTDIR)/man/man1
 uninstall:
 	rm -f $(DESTDIR)$(PREFIX)/bin/$(PROGRAM)
 	rm -f $(DESTDIR)$(SYSCONFDIR)/$(PROGRAM).conf
 	rm -rf $(DESTDIR)$(LIBEXECDIR)/$(PROGRAM)
 uninstall-man:
 	rm -f $(DESTDIR)$(DATAROOTDIR)/man/man1/$(PROGRAM).1
 dist: clean man
 	( git ls-files * ; ls $(PROGRAM).1 ) | \
 	  tar -czT - --transform 's,^,$(PROGRAM)-$(VERSION)/,' \
 	  -f $(PROGRAM)-$(VERSION).tar.gz
 distclean: clean
 	rm -f $(PROGRAM).1 $(PROGRAM)-*.tar.gz
 .PHONY: all clean install uninstall install-man uninstall-man
--- a/packages/i3blocks-gaps/README.md
+++ b/packages/i3blocks-gaps/README.md
@ -0,0 +1,102 @@
 # i3blocks-gaps
 This repository is a fork of [i3blocks](https://github.com/vivien/i3blocks) made to be compatible with [i3-gaps](https://github.com/Airblader/i3), itself a fork of i3wm.
 ***
 i3blocks is a highly flexible **status line** for the [i3](http://i3wm.org) 
 window manager. It handles *clicks*, *signals* and *language-agnostic* user 
 *scripts*.
 The content of each *block* (e.g. time, battery status, network state, ...) is 
 the output of a *command* provided by the user. Blocks are updated on *click*, 
 at a given *interval* of time or on a given *signal*, also specified by the 
 user.
 It aims to respect the
 [i3bar protocol](http://i3wm.org/docs/i3bar-protocol.html), providing 
 customization such as text alignment, urgency, color, and more.
 - - -
 Here is an example of status line, showing the time updated every 5 seconds, 
 the volume updated only when i3blocks receives a SIGRTMIN+1, and click events.
 ```` ini
 [volume]
 label=Volume:
 command=amixer get Master | grep -E -o '[0-9]{1,3}?%' | head -1
 interval=once
 signal=1
 # use 'pkill -RTMIN+1 i3blocks' after changing the volume
 [time]
 command=date '+%D %T'
 interval=5
 [clickme]
 full_text=Click me!
 command=echo button=$BLOCK_BUTTON x=$BLOCK_X y=$BLOCK_Y
 min_width=button=1 x=1366 y=768
 align=left
 ````
 You can use your own scripts, or the 
 [ones](https://github.com/Airblader/i3blocks-gaps/tree/master/scripts) provided with 
 i3blocks. Many [community-contributed scripts](https://github.com/vivien/i3blocks-contrib) are also available. Feel free to contribute and improve them!
 The default config will look like this:
 ![](http://i.imgur.com/p3d6MeK.png)
 The scripts provided by default may use external tools:
  * `mpstat` (often provided by the *sysstat* package) used by `cpu_usage`.
  * `acpi` (often provided by a package of the same name) used by `battery`.
 The user contributed scripts may also use external tools:
  * `playerctl` (available [here](https://github.com/acrisci/playerctl)) used by `mediaplayer`.
  * `sensors` (often provided by the *lm-sensors* package) used by `temperature`.
 ## Documentation
 For more information about how it works, please refer to the 
 [**manpage**](http://vivien.github.io/i3blocks).
 You can also take a look at the
 [i3bar protocol](http://i3wm.org/docs/i3bar-protocol.html) to see what 
 possibilities it offers you.
 Take a look at the [wiki](https://github.com/vivien/i3blocks/wiki) for examples 
 of blocks and screenshots. If you want to share your ideas and status line, 
 feel free to edit it!
 ## Installation
 Install i3blocks-gaps from source:
    $ git clone https://github.com/Airblader/i3blocks-gaps i3blocks
    $ cd i3blocks
    $ make clean debug # or make clean all
    # make install
 Note: the generation of the manpage requires the `pandoc` utility, packaged in
 common distributions as `pandoc`.
 ### Usage
  * Set your `status_command` in a bar block of your i3 config file:
        bar {
          status_command i3blocks
        }
  * For customization, copy the default i3blocks.conf into ~/.i3blocks.conf
    (e.g. `cp /etc/i3blocks.conf ~/.i3blocks.conf`)
  * Restart i3 (e.g. `i3-msg restart`)
 ## Copying
 i3blocks is Copyright (C) 2014 Vivien Didelot<br />
 See the file COPYING for information of licensing and distribution.
--- a/packages/i3blocks-gaps/i3blocks.1.md
+++ b/packages/i3blocks-gaps/i3blocks.1.md
@ -0,0 +1,276 @@
 % I3BLOCKS(1)
 # NAME
 i3blocks - A flexible scheduler for your i3bar blocks
 # SYNOPSIS
 i3blocks [*options*]
 # DESCRIPTION
 **i3blocks** allows one to easily describe blocks in a simple format, and
 generate a status line for i3bar(1). It handles clicks, signals and time
 interval for user scripts.
 #OPTIONS
 -c <configfile>
 :   Specifies an alternate configuration file path. By default, i3blocks looks 
    for configuration files in the following order (note that /etc may be
    prefixed with /usr/local depending on the compilation flags):
        1. ~/.config/i3blocks/config (or $XDG_CONFIG_HOME/i3blocks/config if set)
        2. ~/.i3blocks.conf
        3. /etc/xdg/i3blocks/config (or $XDG_CONFIG_DIRS/i3blocks/config if set)
        4. /etc/i3blocks.conf
 -v
 :   Log level. This option is cumulative. By default, error messages are
    displayed on stderr. Passed once, a failure during an update is shown
    within the block. Passed twice enables the debug messages on stderr.
 -V
 :   Print the version and exit.
 -h
 :   Print the help message and exit.
 # CONFIGURATION
 The configuration file is an ini file. Each section describes a new block.
 A line beginning with a `#` sign is a comment, and empty lines are ignored.
 A property is a `key=value` pair per line, with no space around the equal sign.
 Properties declared outside a block (i.e. at the beginning of the file)
 describe global settings.
 Here is an example config file:
    # This is a comment
    interval=5
    color=#00FF00
    [weather]
    command=~/bin/weather.pl
    interval=1800
    [time]
    command=date +%T
 To use i3blocks as your status line, define it in a *bar* block of your
 `~/i3/config` file:
    bar {
      status_command i3blocks
    }
 # BLOCK
 The properties used to describe a block are the keys specified in the i3bar
 protocol http://i3wm.org/docs/i3bar-protocol.html , plus additional properties
 used by **i3blocks** to describe when and how to update a block.
 All the supported properties are described below.
 The following keys are standard, see
 http://i3wm.org/docs/i3bar-protocol.html
 for details.
 - `full_text`
 - `short_text`
 - `color`
 - `background`
 - `border`
 - `min_width`
 - `align`
 - `name`
 - `instance`
 - `urgent`
 - `separator`
 - `separator_block_width`
 - `markup`
 The following keys are specific to **i3blocks**.
 `command`
 :	 The command executed by a shell, used to update the block. The expected
 	 behavior is described below, in the **COMMAND** section.
 `interval`
 :    If it is a positive integer, then the block is spawned on startup and the
 	 value is used as a time interval in seconds to schedule future updates.
 	 If unspecified or 0, the block won't be executed on startup (which is
 	 useful to simulate buttons).
 	 If "*once*" (or -1), the block will be executed only on startup (note that a
 	 click or signal will still trigger an update).
 	 If "*repeat*" (or -2), the block will be spawned on startup, and as soon as
 	 it terminates (useful to repeat blocking commands). Use with caution!
 	 If "*persist*" (or -3), the block will be executed only on startup, and
 	 updated as soon as it outputs a line. Thus limited to single line updates.
 `signal`
 :	 The signal number used to update the block. All the real-time (think
     prioritized and queueable) signals are available to the user. The number is
     valid between 1 and N, where SIGRTMIN+N = SIGRTMAX. (Note: there are 31
     real-time signals in Linux.) For instance, `signal=10` means that this
     block will be updated when **i3blocks** receives SIGRTMIN+10.
 `label`
 : 	An optional label to preprend to the `full_text` after an update.
 `format`
 :    This property specifies the format of the output text. The default format
     is plain text, as described in the **COMMAND** section.
     If "json" (or 1) is used, the block output is parsed as JSON.
 # COMMAND
 The value of the `command` key will be passed and executed as is by a shell.
 The standard output of the command line is used to update the block content.
 Each non-empty line of the output will overwrite the corresponding property:
 1. full_text
 2. short_text
 3. color
 For example, this script sets the `full_text` in blue but no `short_text`:
    echo "Here's my label"
    echo
    echo \#0000FF
 If the command line returns 0 or 33, the block is updated. Otherwise, it is
 considered a failure and the first line (if any) is still displayed. Note that
 stderr is ignored. A return code of 33 will set the `urgent` flag to true.
 For example, this script prints the battery percentage and sets the urgent flag 
 if it is below 10%:
    BAT=`acpi -b | grep -E -o '[0-9][0-9]?%'`
    echo "BAT: $BAT"
    test ${BAT%?} -le 10 && exit 33 || exit 0
 When forking a block command, **i3blocks** will set the environment with some 
 `BLOCK_*` variables. The following variables are always provided, with
 eventually an empty string as the value.
 `BLOCK_NAME`
 :   The name of the block (usually the section name).
 `BLOCK_INSTANCE`
 :   An optional argument to the script.
 `BLOCK_BUTTON`
 :   Mouse button (1, 2 or 3) if the block was clicked.
 `BLOCK_X` and `BLOCK_Y`
 :   Coordinates where the click occurred, if the block was clicked.
 Here is an example using the environment:
    [block]
    command=echo name=$BLOCK_NAME instance=$BLOCK_INSTANCE
    interval=1
    [clickme]
    full_text=Click me!
    command=echo button=$BLOCK_BUTTON x=$BLOCK_X y=$BLOCK_Y
    min_width=button=1 x=1366 y=768
    align=left
 Note that **i3blocks** provides a set of optional scripts for convenience, such
 as network status, battery check, cpu load, volume, etc.
 # EXAMPLES
 As an example, here is a close configuration to i3status(1) default settings:
 **TODO**
    interval=5
    signal=10
 	[ipv6]
    [free]
    [dhcp]
    [vpn]
    [wifi]
    [ethernet]
    min_width=E: 255.255.255.255 (1000 Mbit/s)
    [battery]
    [cpu]
    [datetime]
 The following block shows the usage of `signal` with some i3(1) bindings
 which adjust the volume, before issuing a `pkill -RTMIN+1 i3blocks`:
    [volume]
    command=echo -n 'Volume: '; amixer get Master | grep -E -o '[0-9][0-9]?%'
    interval=once
    signal=1
    # no interval, only check on SIGRTMIN+1
 Here is an example of a very minimalist config, assuming you have a bunch of
 scripts under `~/bin/blocks/` with the same name as the blocks:
    command=~/bin/blocks/$BLOCK_NAME
    interval=1
    [free]
    [wifi]
    [ethernet]
    [battery]
    [cpu]
    [datetime]
 # SEE ALSO
 The development of i3blocks takes place on [Github](https://github.com/vivien/i3blocks).
 The [wiki](https://github.com/vivien/i3blocks/wiki) is a good
 source of examples for blocks and screenshots.
 `i3` (1), `i3bar` (1), `i3status` (1)
 # Reporting Bugs
 Please report bugs on the [issue tracker](https://github.com/vivien/i3blocks/issues).
 # Known Bugs
 None.
 # AUTHOR
 Written by Vivien Didelot <vivien.didelot@gmail.com>.
 # COPYRIGHT
 Copyright (C) 2014 Vivien Didelot <vivien.didelot@gmail.com>
 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
 This is free software: you are free to change and redistribute it. There is NO 
 WARRANTY, to the extent permitted by law.
--- a/packages/i3blocks-gaps/i3blocks.conf
+++ b/packages/i3blocks-gaps/i3blocks.conf
@ -0,0 +1,115 @@
 # i3blocks config file
 #
 # Please see man i3blocks for a complete reference!
 # The man page is also hosted at http://vivien.github.io/i3blocks
 #
 # List of valid properties:
 #
 # align
 # color
 # background
 # border
 # command
 # full_text
 # instance
 # interval
 # label
 # min_width
 # name
 # separator
 # separator_block_width
 # short_text
 # signal
 # urgent
 # Global properties
 #
 # The top properties below are applied to every block, but can be overridden.
 # Each block command defaults to the script name to avoid boilerplate.
 command=$SCRIPT_DIR/$BLOCK_NAME
 separator_block_width=15
 markup=none
 # Volume indicator
 #
 # The first parameter sets the step (and units to display)
 # The second parameter overrides the mixer selection
 # See the script for details.
 [volume]
 label=VOL
 #label=♪
 instance=Master
 #instance=PCM
 interval=once
 signal=10
 # Memory usage
 #
 # The type defaults to "mem" if the instance is not specified.
 [memory]
 label=MEM
 separator=false
 interval=30
 [memory]
 label=SWAP
 instance=swap
 separator=false
 interval=30
 # Disk usage
 #
 # The directory defaults to $HOME if the instance is not specified.
 # The script may be called with a optional argument to set the alert
 # (defaults to 10 for 10%).
 [disk]
 label=HOME
 #instance=/mnt/data
 interval=30
 # Network interface monitoring
 #
 # If the instance is not specified, use the interface used for default route.
 # The address can be forced to IPv4 or IPv6 with -4 or -6 switches.
 [iface]
 #instance=wlan0
 color=#00FF00
 interval=10
 separator=false
 [wifi]
 #instance=wlp3s0
 interval=10
 separator=false
 [bandwidth]
 #instance=eth0
 interval=5
 # CPU usage
 #
 # The script may be called with -w and -c switches to specify thresholds,
 # see the script for details.
 [cpu_usage]
 label=CPU
 interval=10
 min_width=CPU: 100.00%
 #separator=false
 #[load_average]
 #interval=10
 # Battery indicator
 #
 # The battery instance defaults to 0.
 [battery]
 label=BAT
 #label=⚡
 #instance=1
 interval=30
 # Date Time
 #
 [time]
 command=date '+%Y-%m-%d %H:%M:%S'
 interval=5
--- a/packages/i3blocks-gaps/include/bar.h
+++ b/packages/i3blocks-gaps/include/bar.h
@ -0,0 +1,34 @@
 /*
 * bar.h - definition of a status line handling functions
 * Copyright (C) 2014  Vivien Didelot
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 <http://www.gnu.org/licenses/>.
 */
 #ifndef _BAR_H
 #define _BAR_H
 struct bar {
 	struct block *blocks;
 	unsigned int num;
 };
 void bar_poll_timed(struct bar *);
 void bar_poll_clicked(struct bar *);
 void bar_poll_outdated(struct bar *);
 void bar_poll_signaled(struct bar *, int);
 void bar_poll_exited(struct bar *);
 void bar_poll_readable(struct bar *, int);
 #endif /* _BAR_H */
--- a/packages/i3blocks-gaps/include/block.h
+++ b/packages/i3blocks-gaps/include/block.h
@ -0,0 +1,113 @@
 /*
 * block.h - definition of a block
 * Copyright (C) 2014  Vivien Didelot
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 <http://www.gnu.org/licenses/>.
 */
 #ifndef _BLOCK_H
 #define _BLOCK_H
 #include <sys/types.h>
 #include "click.h"
 #include "log.h"
 #define PROP_I3BAR	1 /* See http://i3wm.org/docs/i3bar-protocol.html */
 #define PROP_GAPS	1 /* See https://github.com/Airblader/i3/blob/gaps/docs/i3bar-protocol */
 #define PROP_STRING	2
 #define PROP_NUMBER	4
 #define PROP_BOOLEAN	8
 #define INTER_ONCE	-1
 #define INTER_REPEAT	-2
 #define INTER_PERSIST	-3
 #define FORMAT_PLAIN	0
 #define FORMAT_JSON	1
 /* Block command exit codes */
 #define EXIT_URGENT	'!' /* 33 */
 #define EXIT_ERR_INTERNAL	66
 #define PROPERTIES(_) \
 	_(full_text,             1024, PROP_I3BAR | PROP_STRING) \
 	_(short_text,            512,  PROP_I3BAR | PROP_STRING) \
 	_(color,                 10,   PROP_I3BAR | PROP_STRING) \
 	_(background,            10,   PROP_I3BAR | PROP_STRING) \
 	_(border,                10,   PROP_I3BAR | PROP_STRING) \
 	_(min_width,             1024, PROP_I3BAR | PROP_STRING | PROP_NUMBER) \
 	_(align,                 8,    PROP_I3BAR | PROP_STRING) \
 	_(name,                  32,   PROP_I3BAR | PROP_STRING) \
 	_(instance,              256,  PROP_I3BAR | PROP_STRING) \
 	_(urgent,                8,    PROP_I3BAR | PROP_BOOLEAN) \
 	_(separator,             8,    PROP_I3BAR | PROP_BOOLEAN) \
 	_(separator_block_width, 8,    PROP_I3BAR | PROP_NUMBER) \
 	_(markup,                8,    PROP_I3BAR | PROP_STRING) \
 	_(command,               1024,              PROP_STRING) \
 	_(interval,              8,                 PROP_STRING | PROP_NUMBER) \
 	_(signal,                8,                 PROP_NUMBER) \
 	_(label,                 32,                PROP_STRING) \
 	_(format,                8,                 PROP_STRING | PROP_NUMBER) \
 	_(border_top,            8,     PROP_GAPS | PROP_NUMBER) \
 	_(border_bottom,         8,     PROP_GAPS | PROP_NUMBER) \
 	_(border_left,           8,     PROP_GAPS | PROP_NUMBER) \
 	_(border_right,          8,     PROP_GAPS | PROP_NUMBER) \
 struct properties {
 #define DEFINE(_name, _size, _flags) char _name[_size];
 	PROPERTIES(DEFINE);
 #undef DEFINE
 };
 struct block {
 	struct properties default_props;
 	struct properties updated_props;
 	/* Shortcuts */
 	int interval;
 	unsigned signal;
 	unsigned format;
 	/* Runtime info */
 	unsigned long timestamp;
 	pid_t pid;
 	int out, err;
 };
 /* Shortcuts to config */
 #define NAME(_block)		(_block->default_props.name)
 #define INSTANCE(_block)	(_block->default_props.instance)
 #define COMMAND(_block)		(_block->default_props.command)
 #define LABEL(_block)		(_block->default_props.label)
 #define INTERVAL(_block)	(_block->default_props.interval)
 /* Shortcuts to update */
 #define FULL_TEXT(_block)	(_block->updated_props.full_text)
 #define bdebug(block, msg, ...) \
 	debug("[%s] " msg, NAME(block), ##__VA_ARGS__)
 #define berror(block, msg, ...) \
 	error("[%s] " msg, NAME(block), ##__VA_ARGS__)
 #define berrorx(block, msg, ...) \
 	errorx("[%s] " msg, NAME(block), ##__VA_ARGS__)
 void block_setup(struct block *);
 void block_spawn(struct block *, struct click *);
 void block_reap(struct block *);
 void block_update(struct block *);
 #endif /* _BLOCK_H */
--- a/packages/i3blocks-gaps/include/click.h
+++ b/packages/i3blocks-gaps/include/click.h
@ -0,0 +1,32 @@
 /*
 * click.h - definition of click parsing functions
 * Copyright (C) 2014  Vivien Didelot
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 <http://www.gnu.org/licenses/>.
 */
 #ifndef _CLICK_H
 #define _CLICK_H
 struct click {
 	char *name;
 	char *instance;
 	char *button;
 	char *x;
 	char *y;
 };
 void click_parse(char *, struct click *);
 #endif /* _CLICK_H */
--- a/packages/i3blocks-gaps/include/ini.h
+++ b/packages/i3blocks-gaps/include/ini.h
@ -0,0 +1,26 @@
 /*
 * ini.h - INI parsing header
 * Copyright (C) 2014  Vivien Didelot
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 <http://www.gnu.org/licenses/>.
 */
 #ifndef _INI_H
 #define _INI_H
 #include "bar.h"
 struct bar *ini_load(const char *);
 #endif /* _INI_H */
--- a/packages/i3blocks-gaps/include/io.h
+++ b/packages/i3blocks-gaps/include/io.h
@ -0,0 +1,25 @@
 /*
 * io.h - header for non-blocking I/O operations
 * Copyright (C) 2015  Vivien Didelot
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 <http://www.gnu.org/licenses/>.
 */
 #ifndef _IO_H
 #define _IO_H
 int io_signal(int, int);
 int io_readline(int, char *, size_t);
 #endif /* _IO_H */
--- a/packages/i3blocks-gaps/include/json.h
+++ b/packages/i3blocks-gaps/include/json.h
@ -0,0 +1,29 @@
 /*
 * json.h - JSON manipulation header
 * Copyright (C) 2014  Vivien Didelot
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 <http://www.gnu.org/licenses/>.
 */
 #ifndef _JSON_H
 #define _JSON_H
 #include "bar.h"
 #include "block.h"
 void json_parse(const char *json, const char *name, int *start, int *len);
 void json_print_bar(struct bar *);
 #endif /* _JSON_H */
--- a/packages/i3blocks-gaps/include/log.h
+++ b/packages/i3blocks-gaps/include/log.h
@ -0,0 +1,45 @@
 /*
 * log.h - debug and error printing macros
 * Copyright (C) 2014  Vivien Didelot
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 <http://www.gnu.org/licenses/>.
 */
 #ifndef _LOG_H
 #define _LOG_H
 #include <errno.h>
 #include <stdio.h>
 #include <string.h>
 extern unsigned log_level;
 enum log_level {
 	LOG_NORMAL,
 	LOG_WARN,
 	LOG_DEBUG,
 };
 #define debug(msg, ...) \
 	if (log_level >= LOG_DEBUG) { \
 		fprintf(stderr, "DEBUG %s:%d: " msg "\n", __func__, __LINE__, ##__VA_ARGS__); \
 	}
 #define error(msg, ...) \
 	fprintf(stderr, "ERROR %s:%d: " msg "\n", __func__, __LINE__, ##__VA_ARGS__)
 #define errorx(msg, ...) \
 	error(msg ": %s", ##__VA_ARGS__, strerror(errno))
 #endif /* _LOG_H */
--- a/packages/i3blocks-gaps/include/sched.h
+++ b/packages/i3blocks-gaps/include/sched.h
@ -0,0 +1,25 @@
 /*
 * sched.h - scheduling header
 * Copyright (C) 2014  Vivien Didelot
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 <http://www.gnu.org/licenses/>.
 */
 #ifndef _SCHED_H
 #define _SCHED_H
 int sched_init(struct bar *);
 void sched_start(struct bar *);
 #endif /* _SCHED_H */
--- a/packages/i3blocks-gaps/scripts/bandwidth
+++ b/packages/i3blocks-gaps/scripts/bandwidth
@ -0,0 +1,107 @@
 #!/bin/bash
 # Copyright (C) 2012 Stefan Breunig <stefan+measure-net-speed@mathphys.fsk.uni-heidelberg.de>
 # Copyright (C) 2014 kaueraal
 # Copyright (C) 2015 Thiago Perrotta <perrotta dot thiago at poli dot ufrj dot br>
 # This program 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 3 of the License, or
 # (at your option) any later version.
 # This program 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 <http://www.gnu.org/licenses/>.
 # Get custom IN and OUT labels if provided by command line arguments
 while [[ $# -gt 1 ]]; do
    key="$1"
    case "$key" in 
        -i|--inlabel)
            INLABEL="$2"
            shift;;
        -o|--outlabel)
            OUTLABEL="$2"
            shift;;
    esac
    shift
 done
 [[ -z $INLABEL ]] && INLABEL="IN "
 [[ -z $OUTLABEL ]] && OUTLABEL="OUT "
 # Use the provided interface, otherwise the device used for the default route.
 if [[ -n $BLOCK_INSTANCE ]]; then
  INTERFACE=$BLOCK_INSTANCE
 else
  INTERFACE=$(ip route | awk '/^default/ { print $5 ; exit }')
 fi
 # Issue #36 compliant.
 if ! [ -e "/sys/class/net/${INTERFACE}/operstate" ] || ! [ "`cat /sys/class/net/${INTERFACE}/operstate`" = "up" ]
 then
    echo "$INTERFACE down"
    echo "$INTERFACE down"
    echo "#FF0000"
    exit 0
 fi
 # path to store the old results in
 path="/dev/shm/$(basename $0)-${INTERFACE}"
 # grabbing data for each adapter.
 read rx < "/sys/class/net/${INTERFACE}/statistics/rx_bytes"
 read tx < "/sys/class/net/${INTERFACE}/statistics/tx_bytes"
 # get time
 time=$(date +%s)
 # write current data if file does not exist. Do not exit, this will cause
 # problems if this file is sourced instead of executed as another process.
 if ! [[ -f "${path}" ]]; then
  echo "${time} ${rx} ${tx}" > "${path}"
  chmod 0666 "${path}"
 fi
 # read previous state and update data storage
 read old < "${path}"
 echo "${time} ${rx} ${tx}" > "${path}"
 # parse old data and calc time passed
 old=(${old//;/ })
 time_diff=$(( $time - ${old[0]} ))
 # sanity check: has a positive amount of time passed
 [[ "${time_diff}" -gt 0 ]] || exit
 # calc bytes transferred, and their rate in byte/s
 rx_diff=$(( $rx - ${old[1]} ))
 tx_diff=$(( $tx - ${old[2]} ))
 rx_rate=$(( $rx_diff / $time_diff ))
 tx_rate=$(( $tx_diff / $time_diff ))
 # shift by 10 bytes to get KiB/s. If the value is larger than
 # 1024^2 = 1048576, then display MiB/s instead
 # incoming
 echo -n "$INLABEL"
 rx_kib=$(( $rx_rate >> 10 ))
 if hash bc 2>/dev/null && [[ "$rx_rate" -gt 1048576 ]]; then
  printf '%sM' "`echo "scale=1; $rx_kib / 1024" | bc`"
 else
  echo -n "${rx_kib}K"
 fi
 echo -n " "
 # outgoing
 echo -n "$OUTLABEL"
 tx_kib=$(( $tx_rate >> 10 ))
 if hash bc 2>/dev/null && [[ "$tx_rate" -gt 1048576 ]]; then
  printf '%sM' "`echo "scale=1; $tx_kib / 1024" | bc`"
 else
  echo -n "${tx_kib}K"
 fi
--- a/packages/i3blocks-gaps/scripts/battery
+++ b/packages/i3blocks-gaps/scripts/battery
@ -0,0 +1,89 @@
 #!/usr/bin/perl
 #
 # Copyright 2014 Pierre Mavro <deimos@deimos.fr>
 # Copyright 2014 Vivien Didelot <vivien@didelot.org>
 #
 # Licensed under the terms of the GNU GPL v3, or any later version.
 #
 # This script is meant to use with i3blocks. It parses the output of the "acpi"
 # command (often provided by a package of the same name) to read the status of
 # the battery, and eventually its remaining time (to full charge or discharge).
 #
 # The color will gradually change for a percentage below 85%, and the urgency
 # (exit code 33) is set if there is less that 5% remaining.
 use strict;
 use warnings;
 use utf8;
 my $acpi;
 my $status;
 my $percent;
 my $ac_adapt;
 my $full_text;
 my $short_text;
 my $bat_number = $ENV{BLOCK_INSTANCE} || 0;
 # read the first line of the "acpi" command output
 open (ACPI, "acpi -b | grep 'Battery $bat_number' |") or die;
 $acpi = <ACPI>;
 close(ACPI);
 # fail on unexpected output
 if ($acpi !~ /: (\w+), (\d+)%/) {
 	die "$acpi\n";
 }
 $status = $1;
 $percent = $2;
 $full_text = "$percent%";
 if ($status eq 'Discharging') {
 	$full_text .= ' DIS';
 } elsif ($status eq 'Charging') {
 	$full_text .= ' CHR';
 } elsif ($status eq 'Unknown') {
 	open (AC_ADAPTER, "acpi -a |") or die;
 	$ac_adapt = <AC_ADAPTER>;
 	close(AC_ADAPTER);
 	if ($ac_adapt =~ /: ([\w-]+)/) {
 		$ac_adapt = $1;
 		if ($ac_adapt eq 'on-line') {
 			$full_text .= ' CHR';
 		} elsif ($ac_adapt eq 'off-line') {
 			$full_text .= ' DIS';
 		}
 	}
 }
 $short_text = $full_text;
 if ($acpi =~ /(\d\d:\d\d):/) {
 	$full_text .= " ($1)";
 }
 # print text
 print "$full_text\n";
 print "$short_text\n";
 # consider color and urgent flag only on discharge
 if ($status eq 'Discharging') {
 	if ($percent < 20) {
 		print "#FF0000\n";
 	} elsif ($percent < 40) {
 		print "#FFAE00\n";
 	} elsif ($percent < 60) {
 		print "#FFF600\n";
 	} elsif ($percent < 85) {
 		print "#A8FF00\n";
 	}
 	if ($percent < 5) {
 		exit(33);
 	}
 }
 exit(0);
--- a/packages/i3blocks-gaps/scripts/cpu_usage
+++ b/packages/i3blocks-gaps/scripts/cpu_usage
@ -0,0 +1,59 @@
 #!/usr/bin/perl
 #
 # Copyright 2014 Pierre Mavro <deimos@deimos.fr>
 # Copyright 2014 Vivien Didelot <vivien@didelot.org>
 # Copyright 2014 Andreas Guldstrand <andreas.guldstrand@gmail.com>
 #
 # Licensed under the terms of the GNU GPL v3, or any later version.
 use strict;
 use warnings;
 use utf8;
 use Getopt::Long;
 # default values
 my $t_warn = 50;
 my $t_crit = 80;
 my $cpu_usage = -1;
 my $decimals = 2;
 sub help {
    print "Usage: cpu_usage [-w <warning>] [-c <critical>] [-d <decimals>]\n";
    print "-w <percent>: warning threshold to become yellow\n";
    print "-c <percent>: critical threshold to become red\n";
    print "-d <decimals>:  Use <decimals> decimals for percentage (default is $decimals) \n"; 
    exit 0;
 }
 GetOptions("help|h" => \&help,
           "w=i"    => \$t_warn,
           "c=i"    => \$t_crit,
           "d=i"    => \$decimals,
 );
 # Get CPU usage
 $ENV{LC_ALL}="en_US"; # if mpstat is not run under en_US locale, things may break, so make sure it is
 open (MPSTAT, 'mpstat 1 1 |') or die;
 while (<MPSTAT>) {
    if (/^.*\s+(\d+\.\d+)\s+$/) {
        $cpu_usage = 100 - $1; # 100% - %idle
        last;
    }
 }
 close(MPSTAT);
 $cpu_usage eq -1 and die 'Can\'t find CPU information';
 # Print short_text, full_text
 printf "%.${decimals}f%%\n", $cpu_usage;
 printf "%.${decimals}f%%\n", $cpu_usage;
 # Print color, if needed
 if ($cpu_usage >= $t_crit) {
    print "#FF0000\n";
    exit 33;
 } elsif ($cpu_usage >= $t_warn) {
    print "#FFFC00\n";
 }
 exit 0;
--- a/packages/i3blocks-gaps/scripts/disk
+++ b/packages/i3blocks-gaps/scripts/disk
@ -0,0 +1,41 @@
 #!/bin/sh
 # Copyright (C) 2014 Julien Bonjean <julien@bonjean.info>
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 DIR="${BLOCK_INSTANCE:-$HOME}"
 ALERT_LOW="${1:-10}" # color will turn red under this value (default: 10%)
 df -h -P -l "$DIR" | awk -v alert_low=$ALERT_LOW '
 /\/.*/ {
 	# full text
 	print $4
 	# short text
 	print $4
 	use=$5
 	# no need to continue parsing
 	exit 0
 }
 END {
 	gsub(/%$/,"",use)
 	if (100 - use < alert_low) {
 		# color
 		print "#FF0000"
 	}
 }
 '
--- a/packages/i3blocks-gaps/scripts/iface
+++ b/packages/i3blocks-gaps/scripts/iface
@ -0,0 +1,61 @@
 #!/bin/bash
 # Copyright (C) 2014 Julien Bonjean <julien@bonjean.info>
 # Copyright (C) 2014 Alexander Keller <github@nycroth.com>
 # This program 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 3 of the License, or
 # (at your option) any later version.
 # This program 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 <http://www.gnu.org/licenses/>.
 #------------------------------------------------------------------------
 # Use the provided interface, otherwise the device used for the default route.
 if [[ -n $BLOCK_INSTANCE ]]; then
  IF=$BLOCK_INSTANCE
 else
  IF=$(ip route | awk '/^default/ { print $5 ; exit }')
 fi
 #------------------------------------------------------------------------
 # As per #36 -- It is transparent: e.g. if the machine has no battery or wireless
 # connection (think desktop), the corresponding block should not be displayed.
 [[ ! -d /sys/class/net/${IF} ]] && exit
 #------------------------------------------------------------------------
 if [[ "$(cat /sys/class/net/$IF/operstate)" = 'down' ]]; then
  echo down # full text
  echo down # short text
  echo \#FF0000 # color
  exit
 fi
 case $1 in
  -4)
    AF=inet ;;
  -6)
    AF=inet6 ;;
  *)
    AF=inet6? ;;
 esac
 # if no interface is found, use the first device with a global scope
 IPADDR=$(ip addr show $IF | perl -n -e "/$AF ([^\/]+).* scope global/ && print \$1 and exit")
 case $BLOCK_BUTTON in
  3) echo -n "$IPADDR" | xclip -q -se c ;;
 esac
 #------------------------------------------------------------------------
 echo "$IPADDR" # full text
 echo "$IPADDR" # short text
--- a/packages/i3blocks-gaps/scripts/load_average
+++ b/packages/i3blocks-gaps/scripts/load_average
@ -0,0 +1,34 @@
 #!/bin/sh
 # Copyright (C) 2014 Julien Bonjean <julien@bonjean.info>
 # This program 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 3 of the License, or
 # (at your option) any later version.
 # This program 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 <http://www.gnu.org/licenses/>.
 load="$(cut -d ' ' -f1 /proc/loadavg)"
 cpus="$(nproc)"
 # full text
 echo "$load"
 # short text
 echo "$load"
 # color if load is too high
 awk -v cpus=$cpus -v cpuload=$load '
    BEGIN {
        if (cpus <= cpuload) {
            print "#FF0000";
            exit 33;
        }
    }
 '
--- a/packages/i3blocks-gaps/scripts/memory
+++ b/packages/i3blocks-gaps/scripts/memory
@ -0,0 +1,65 @@
 #!/bin/sh
 # Copyright (C) 2014 Julien Bonjean <julien@bonjean.info>
 # This program 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 3 of the License, or
 # (at your option) any later version.
 # This program 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 <http://www.gnu.org/licenses/>.
 TYPE="${BLOCK_INSTANCE:-mem}"
 awk -v type=$TYPE '
 /^MemTotal:/ {
 	mem_total=$2
 }
 /^MemFree:/ {
 	mem_free=$2
 }
 /^Buffers:/ {
 	mem_free+=$2
 }
 /^Cached:/ {
 	mem_free+=$2
 }
 /^SwapTotal:/ {
 	swap_total=$2
 }
 /^SwapFree:/ {
 	swap_free=$2
 }
 END {
 	if (type == "swap") {
 		free=swap_free/1024/1024
 		used=(swap_total-swap_free)/1024/1024
 		total=swap_total/1024/1024
 	} else {
 		free=mem_free/1024/1024
 		used=(mem_total-mem_free)/1024/1024
 		total=mem_total/1024/1024
 	}
 	pct=used/total*100
 	# full text
 	printf("%.1fG/%.1fG (%.f%%)\n", used, total, pct)
 	# short text
 	printf("%.f%%\n", pct)
 	# color
 	if (pct > 90) {
 		print("#FF0000\n")
 	} else if (pct > 80) {
 		print("#FFAE00\n")
 	} else if (pct > 70) {
 		print("#FFF600\n")
 	}
 }
 ' /proc/meminfo
--- a/packages/i3blocks-gaps/scripts/volume
+++ b/packages/i3blocks-gaps/scripts/volume
@ -0,0 +1,70 @@
 #!/bin/bash
 # Copyright (C) 2014 Julien Bonjean <julien@bonjean.info>
 # Copyright (C) 2014 Alexander Keller <github@nycroth.com>
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #------------------------------------------------------------------------
 # The second parameter overrides the mixer selection
 # For PulseAudio users, use "pulse"
 # For Jack/Jack2 users, use "jackplug"
 # For ALSA users, you may use "default" for your primary card
 # or you may use hw:# where # is the number of the card desired
 MIXER="default"
 [ -n "$(lsmod | grep pulse)" ] && MIXER="pulse"
 [ -n "$(lsmod | grep jack)" ] && MIXER="jackplug"
 MIXER="${2:-$MIXER}"
 # The instance option sets the control to report and configure
 # This defaults to the first control of your selected mixer
 # For a list of the available, use `amixer -D $Your_Mixer scontrols`
 SCONTROL="${BLOCK_INSTANCE:-$(amixer -D $MIXER scontrols |
                  sed -n "s/Simple mixer control '\([A-Za-z ]*\)',0/\1/p" |
                  head -n1
                )}"
 # The first parameter sets the step to change the volume by (and units to display)
 # This may be in in % or dB (eg. 5% or 3dB)
 STEP="${1:-5%}"
 #------------------------------------------------------------------------
 capability() { # Return "Capture" if the device is a capture device
  amixer -D $MIXER get $SCONTROL |
    sed -n "s/  Capabilities:.*cvolume.*/Capture/p"
 }
 volume() {
  amixer -D $MIXER get $SCONTROL $(capability)
 }
 format() {
  perl_filter='if (/.*\[(\d+%)\] (\[(-?\d+.\d+dB)\] )?\[(on|off)\]/)'
  perl_filter+='{CORE::say $4 eq "off" ? "MUTE" : "'
  # If dB was selected, print that instead
  perl_filter+=$([[ $STEP = *dB ]] && echo '$3' || echo '$1')
  perl_filter+='"; exit}'
  perl -ne "$perl_filter"
 }
 #------------------------------------------------------------------------
 case $BLOCK_BUTTON in
  3) amixer -q -D $MIXER sset $SCONTROL $(capability) toggle ;;  # right click, mute/unmute
  4) amixer -q -D $MIXER sset $SCONTROL $(capability) ${STEP}+ unmute ;; # scroll up, increase
  5) amixer -q -D $MIXER sset $SCONTROL $(capability) ${STEP}- unmute ;; # scroll down, decrease
 esac
 volume | format
--- a/packages/i3blocks-gaps/scripts/wifi
+++ b/packages/i3blocks-gaps/scripts/wifi
@ -0,0 +1,46 @@
 #!/bin/bash
 # Copyright (C) 2014 Alexander Keller <github@nycroth.com>
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #------------------------------------------------------------------------
 INTERFACE="${BLOCK_INSTANCE:-wlan0}"
 #------------------------------------------------------------------------
 # As per #36 -- It is transparent: e.g. if the machine has no battery or wireless
 # connection (think desktop), the corresponding block should not be displayed.
 [[ ! -d /sys/class/net/${INTERFACE}/wireless ]] ||
    [[ "$(cat /sys/class/net/$INTERFACE/operstate)" = 'down' ]] && exit
 #------------------------------------------------------------------------
 QUALITY=$(grep $INTERFACE /proc/net/wireless | awk '{ print int($3 * 100 / 70) }')
 #------------------------------------------------------------------------
 echo $QUALITY% # full text
 echo $QUALITY% # short text
 # color
 if [[ $QUALITY -ge 80 ]]; then
    echo "#00FF00"
 elif [[ $QUALITY -ge 60 ]]; then
    echo "#FFF600"
 elif [[ $QUALITY -ge 40 ]]; then
    echo "#FFAE00"
 else
    echo "#FF0000"
 fi
--- a/packages/i3blocks-gaps/src/.gitignore
+++ b/packages/i3blocks-gaps/src/.gitignore
@ -0,0 +1 @@
 *.o
--- a/packages/i3blocks-gaps/src/bar.c
+++ b/packages/i3blocks-gaps/src/bar.c
@ -0,0 +1,148 @@
 /*
 * bar.c - status line handling functions
 * Copyright (C) 2014  Vivien Didelot
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 <http://www.gnu.org/licenses/>.
 */
 #include <errno.h>
 #include <signal.h>
 #include <stddef.h>
 #include <string.h>
 #include <sys/wait.h>
 #include <time.h>
 #include <unistd.h>
 #include "bar.h"
 #include "block.h"
 #include "click.h"
 #include "io.h"
 #include "log.h"
 void
 bar_poll_timed(struct bar *bar)
 {
 	for (int i = 0; i < bar->num; ++i) {
 		struct block *block = bar->blocks + i;
 		/* spawn unless it is only meant for click or signal */
 		if (block->interval != 0)
 			block_spawn(block, NULL);
 	}
 }
 void
 bar_poll_clicked(struct bar *bar)
 {
 	char json[1024] = { 0 };
 	while (io_readline(STDIN_FILENO, json, sizeof(json)) > 0) {
 		struct click click;
 		/* find the corresponding block */
 		click_parse(json, &click);
 		if (!*click.name && !*click.instance)
 			continue;
 		for (int i = 0; i < bar->num; ++i) {
 			struct block *block = bar->blocks + i;
 			if (strcmp(NAME(block), click.name) == 0 && strcmp(INSTANCE(block), click.instance) == 0) {
 				bdebug(block, "clicked");
 				block_spawn(block, &click);
 				break; /* Unlikely to click several blocks */
 			}
 		}
 	}
 }
 void
 bar_poll_outdated(struct bar *bar)
 {
 	for (int i = 0; i < bar->num; ++i) {
 		struct block *block = bar->blocks + i;
 		if (block->interval > 0) {
 			const unsigned long now = time(NULL);
 			const unsigned long next_update = block->timestamp + block->interval;
 			if (((long) (next_update - now)) <= 0) {
 				bdebug(block, "outdated");
 				block_spawn(block, NULL);
 			}
 		}
 	}
 }
 void
 bar_poll_signaled(struct bar *bar, int sig)
 {
 	for (int i = 0; i < bar->num; ++i) {
 		struct block *block = bar->blocks + i;
 		if (block->signal == sig) {
 			bdebug(block, "signaled");
 			block_spawn(block, NULL);
 		}
 	}
 }
 void
 bar_poll_exited(struct bar *bar)
 {
 	for (;;) {
 		siginfo_t infop = { 0 };
 		/* Non-blocking check for dead child(ren) */
 		if (waitid(P_ALL, 0, &infop, WEXITED | WNOHANG | WNOWAIT) == -1)
 			if (errno != ECHILD)
 				errorx("waitid");
 		/* Error or no (dead yet) child(ren) */
 		if (infop.si_pid == 0)
 			break;
 		/* Find the dead process */
 		for (int i = 0; i < bar->num; ++i) {
 			struct block *block = bar->blocks + i;
 			if (block->pid == infop.si_pid) {
 				bdebug(block, "exited");
 				block_reap(block);
 				if (block->interval == INTER_REPEAT) {
 					if (block->timestamp == time(NULL))
 						berror(block, "loop too fast");
 					block_spawn(block, NULL);
 				} else if (block->interval == INTER_PERSIST) {
 					bdebug(block, "unexpected exit?");
 				}
 				break;
 			}
 		}
 	}
 }
 void
 bar_poll_readable(struct bar *bar, const int fd)
 {
 	for (int i = 0; i < bar->num; ++i) {
 		struct block *block = bar->blocks + i;
 		if (block->out == fd) {
 			bdebug(block, "readable");
 			block_update(block);
 			break;
 		}
 	}
 }
--- a/packages/i3blocks-gaps/src/block.c
+++ b/packages/i3blocks-gaps/src/block.c
@ -0,0 +1,386 @@
 /*
 * block.c - update of a single status line block
 * Copyright (C) 2014  Vivien Didelot
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 <http://www.gnu.org/licenses/>.
 */
 #include <errno.h>
 #include <signal.h>
 #include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/wait.h>
 #include <time.h>
 #include <unistd.h>
 #include "block.h"
 #include "click.h"
 #include "io.h"
 #include "json.h"
 #include "log.h"
 static void
 child_setenv(struct block *block, const char *name, const char *value)
 {
 	if (setenv(name, value, 1) == -1) {
 		berrorx(block, "setenv(%s=%s)", name, value);
 		_exit(EXIT_ERR_INTERNAL);
 	}
 }
 static void
 child_setup_env(struct block *block, struct click *click)
 {
 	child_setenv(block, "BLOCK_NAME", NAME(block));
 	child_setenv(block, "BLOCK_INSTANCE", INSTANCE(block));
 	child_setenv(block, "BLOCK_INTERVAL", INTERVAL(block));
 	child_setenv(block, "BLOCK_BUTTON", click ? click->button : "");
 	child_setenv(block, "BLOCK_X", click ? click->x : "");
 	child_setenv(block, "BLOCK_Y", click ? click->y : "");
 }
 static void
 child_reset_signals(struct block *block)
 {
 	sigset_t set;
 	if (sigfillset(&set) == -1) {
 		berrorx(block, "sigfillset");
 		_exit(EXIT_ERR_INTERNAL);
 	}
 	/* It should be safe to assume that all signals are unblocked by default */
 	if (sigprocmask(SIG_UNBLOCK, &set, NULL) == -1) {
 		berrorx(block, "sigprocmask");
 		_exit(EXIT_ERR_INTERNAL);
 	}
 }
 static void
 child_redirect_write(struct block *block, int pipe[2], int fd)
 {
 	if (close(pipe[0]) == -1) {
 		berrorx(block, "close pipe read end");
 		_exit(EXIT_ERR_INTERNAL);
 	}
 	/* Defensive check */
 	if (pipe[1] == fd)
 		return;
 	if (dup2(pipe[1], fd) == -1) {
 		berrorx(block, "dup pipe write end");
 		_exit(EXIT_ERR_INTERNAL);
 	}
 	if (close(pipe[1]) == -1) {
 		berrorx(block, "close pipe write end");
 		_exit(EXIT_ERR_INTERNAL);
 	}
 }
 static void
 child_exec(struct block *block)
 {
 	static const char * const shell = "/bin/sh";
 	execl(shell, shell, "-c", COMMAND(block), (char *) NULL);
 	/* Unlikely to reach this point */
 	berrorx(block, "exec(%s -c %s)", shell, COMMAND(block));
 	_exit(EXIT_ERR_INTERNAL);
 }
 static void
 block_dump_stderr(struct block *block)
 {
 	char buf[2048] = { 0 };
 	/* Note read(2) returns 0 for end-of-pipe */
 	if (read(block->err, buf, sizeof(buf) - 1) == -1) {
 		berrorx(block, "read stderr");
 		return;
 	}
 	if (*buf)
 		bdebug(block, "stderr:\n{\n%s\n}", buf);
 }
 static void
 linecpy(char **lines, char *dest, size_t size)
 {
 	char *newline = strchr(*lines, '\n');
 	/* split if there's a newline */
 	if (newline)
 		*newline = '\0';
 	strncpy(dest, *lines, size);
 	*lines += strlen(dest);
 	/* increment if next char is non-null */
 	if (*(*lines + 1))
 		*lines += 1;
 }
 static void
 mark_as_failed(struct block *block, const char *reason)
 {
 	if (log_level < LOG_WARN)
 		return;
 	struct properties *props = &block->updated_props;
 	memset(props, 0, sizeof(struct properties));
 	strcpy(props->name, NAME(block));
 	strcpy(props->instance, INSTANCE(block));
 	snprintf(props->full_text, sizeof(props->full_text), "[%s] %s", NAME(block), reason);
 	snprintf(props->short_text, sizeof(props->short_text), "[%s] ERROR", NAME(block));
 	strcpy(props->color, "#FF0000");
 	strcpy(props->urgent, "true");
 }
 static void
 block_update_plain_text(struct block *block, char *buf)
 {
 	struct properties *props = &block->updated_props;
 	char *lines = buf;
 	linecpy(&lines, props->full_text, sizeof(props->full_text) - 1);
        if (block->interval == INTER_PERSIST)
                return;
 	linecpy(&lines, props->short_text, sizeof(props->short_text) - 1);
 	if (*lines)
 		linecpy(&lines, props->color, sizeof(props->color) - 1);
 }
 static void
 block_update_json(struct block *block, char *buf)
 {
 	struct properties *props = &block->updated_props;
 	int start, length, size;
 #define PARSE(_name, _size, _flags) \
 	if ((_flags) & PROP_I3BAR) { \
 		json_parse(buf, #_name, &start, &length); \
 		if (start > 0) { \
 			size = _size - 1 < length ? _size - 1 : length; \
 			strncpy(props->_name, buf + start, size); \
 			props->_name[size] = '\0'; \
 		} \
 	}
 	PROPERTIES(PARSE);
 #undef PARSE
 }
 void
 block_update(struct block *block)
 {
 	struct properties *props = &block->updated_props;
 	char buf[2048] = { 0 };
 	int nr;
 	/* Read a single line for persistent block, everything otherwise */
 	if (block->interval == INTER_PERSIST) {
 		nr = io_readline(block->out, buf, sizeof(buf));
 		if (nr < 0) {
 			berror(block, "failed to read a line");
 			return mark_as_failed(block, "failed to read");
 		} else if (nr == 0) {
 			berror(block, "pipe closed");
 			return mark_as_failed(block, "pipe closed");
 		}
 	} else {
 		/* Note: read(2) returns 0 for end-of-pipe */
 		if (read(block->out, buf, sizeof(buf) - 1) == -1) {
 			berrorx(block, "read stdout");
 			return mark_as_failed(block, strerror(errno));
 		}
 	}
 	/* Reset the defaults and merge the output */
 	memcpy(props, &block->default_props, sizeof(struct properties));
 	if (block->format == FORMAT_JSON)
 		block_update_json(block, buf);
 	else
 		block_update_plain_text(block, buf);
 	if (*FULL_TEXT(block) && *LABEL(block)) {
 		static const size_t size = sizeof(props->full_text);
 		char concat[size];
 		snprintf(concat, size, "%s %s", LABEL(block), FULL_TEXT(block));
 		strcpy(props->full_text, concat);
 	}
 	bdebug(block, "updated successfully");
 }
 void
 block_spawn(struct block *block, struct click *click)
 {
 	const unsigned long now = time(NULL);
 	int out[2], err[2];
 	if (!*COMMAND(block)) {
 		bdebug(block, "no command, skipping");
 		return;
 	}
 	if (block->pid > 0) {
 		bdebug(block, "process already spawned");
 		return;
 	}
 	if (pipe(out) == -1 || pipe(err) == -1) {
 		berrorx(block, "pipe");
 		return mark_as_failed(block, strerror(errno));
 	}
 	if (block->interval == INTER_PERSIST) {
 		if (io_signal(out[0], SIGRTMIN))
 			return mark_as_failed(block, "event I/O impossible");
 	}
 	block->pid = fork();
 	if (block->pid == -1) {
 		berrorx(block, "fork");
 		return mark_as_failed(block, strerror(errno));
 	}
 	/* Child? */
 	if (block->pid == 0) {
 		/* Error messages are merged into the parent's stderr... */
 		child_setup_env(block, click);
 		child_reset_signals(block);
 		child_redirect_write(block, out, STDOUT_FILENO);
 		child_redirect_write(block, err, STDERR_FILENO);
 		/* ... until here */
 		child_exec(block);
 	}
 	/*
 	 * Note: for non-persistent blocks, no need to set the pipe read end as
 	 * non-blocking, since it is meant to be read once the child has exited
 	 * (and thus the write end is closed and read is available).
 	 */
 	/* Parent */
 	if (close(out[1]) == -1)
 		berrorx(block, "close stdout");
 	if (close(err[1]) == -1)
 		berrorx(block, "close stderr");
 	block->out = out[0];
 	block->err = err[0];
 	if (!click)
 		block->timestamp = now;
 	bdebug(block, "forked child %d at %ld", block->pid, now);
 }
 void
 block_reap(struct block *block)
 {
 	int status, code;
 	if (block->pid <= 0) {
 		bdebug(block, "not spawned yet");
 		return;
 	}
 	if (waitpid(block->pid, &status, 0) == -1) {
 		berrorx(block, "waitpid(%d)", block->pid);
 		mark_as_failed(block, strerror(errno));
 		goto close;
 	}
 	code = WEXITSTATUS(status);
 	bdebug(block, "process %d exited with %d", block->pid, code);
 	/* Process successfully reaped, reset the block PID */
 	block->pid = 0;
 	block_dump_stderr(block);
 	if (code != 0 && code != EXIT_URGENT) {
 		char reason[32];
 		if (code == EXIT_ERR_INTERNAL)
 			sprintf(reason, "internal error");
 		else
 			sprintf(reason, "bad exit code %d", code);
 		berror(block, "%s", reason);
 		mark_as_failed(block, reason);
 		goto close;
 	}
 	/* Do not update unless it was meant to terminate */
 	if (block->interval == INTER_PERSIST)
 		goto close;
 	block_update(block);
 	/* Exit code takes precedence over the output */
 	if (code == EXIT_URGENT)
 		strcpy(block->updated_props.urgent, "true");
 close:
 	if (close(block->out) == -1)
 		berrorx(block, "close stdout");
 	if (close(block->err) == -1)
 		berrorx(block, "close stderr");
 	/* Invalidate descriptors to avoid misdetection after reassignment */
 	block->out = block->err = -1;
 }
 void block_setup(struct block *block)
 {
 	struct properties *defaults = &block->default_props;
 	struct properties *updated = &block->updated_props;
 	/* Convenient shortcuts */
 	if (strcmp(defaults->interval, "once") == 0)
 		block->interval = INTER_ONCE;
 	else if (strcmp(defaults->interval, "repeat") == 0)
 		block->interval = INTER_REPEAT;
 	else if (strcmp(defaults->interval, "persist") == 0)
 		block->interval = INTER_PERSIST;
 	else
 		block->interval = atoi(defaults->interval);
 	if (strcmp(defaults->format, "json") == 0)
 		block->format = FORMAT_JSON;
 	else
 		block->format = FORMAT_PLAIN;
 	block->signal = atoi(defaults->signal);
 	/* First update (for static blocks and loading labels) */
 	memcpy(updated, defaults, sizeof(struct properties));
 #define PLACEHOLDERS(_name, _size, _flags) "    %s: \"%s\"\n"
 #define ARGS(_name, _size, _flags) #_name, updated->_name,
 	debug("\n{\n" PROPERTIES(PLACEHOLDERS) "%s", PROPERTIES(ARGS) "}");
 #undef ARGS
 #undef PLACEHOLDERS
 }
--- a/packages/i3blocks-gaps/src/click.c
+++ b/packages/i3blocks-gaps/src/click.c
@ -0,0 +1,66 @@
 /*
 * click.c - read and parse of a click
 * Copyright (C) 2014  Vivien Didelot
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 <http://www.gnu.org/licenses/>.
 */
 #include "click.h"
 #include "json.h"
 #include "log.h"
 /*
 * Parse a click, previous read from stdin.
 *
 * A click looks like this ("name" and "instance" can be absent):
 *
 *     ',{"name":"foo","instance":"bar","button":1,"x":1186,"y":13}\n'
 *
 * Note that this function is non-idempotent. We need to parse from right to
 * left. It's ok since the JSON layout is known and fixed.
 */
 void
 click_parse(char *json, struct click *click)
 {
 	int nst, nlen;
 	int ist, ilen;
 	int bst, blen;
 	int xst, xlen;
 	int yst, ylen;
 	json_parse(json, "y", &yst, &ylen);
 	json_parse(json, "x", &xst, &xlen);
 	json_parse(json, "button", &bst, &blen);
 	json_parse(json, "instance", &ist, &ilen);
 	json_parse(json, "name", &nst, &nlen);
 	click->name = json + nst;
 	*(click->name + nlen) = '\0';
 	click->instance = json + ist;
 	*(click->instance + ilen) = '\0';
 	click->button = json + bst;
 	*(click->button + blen) = '\0';
 	click->y = json + yst;
 	*(click->y + ylen) = '\0';
 	click->x = json + xst;
 	*(click->x + xlen) = '\0';
 	debug("parsed click: name=%s instance=%s button=%s x=%s y=%s",
 			click->name, click->instance,
 			click->button, click->x, click->y);
 }
--- a/packages/i3blocks-gaps/src/ini.c
+++ b/packages/i3blocks-gaps/src/ini.c
@ -0,0 +1,247 @@
 /*
 * ini.c - parsing of the INI configuration file
 * Copyright (C) 2014  Vivien Didelot
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 <http://www.gnu.org/licenses/>.
 */
 #include <errno.h>
 #include <limits.h>
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include "bar.h"
 #include "block.h"
 #include "log.h"
 #ifndef SYSCONFDIR
 #define SYSCONFDIR "/etc"
 #endif
 static struct block *
 add_block(struct bar *bar)
 {
 	struct block *block = NULL;
 	void *reloc;
 	reloc = realloc(bar->blocks, sizeof(struct block) * (bar->num + 1));
 	if (reloc) {
 		bar->blocks = reloc;
 		block = bar->blocks + bar->num;
 		bar->num++;
 	}
 	return block;
 }
 static int
 parse_section(const char *line, char *name, unsigned int size)
 {
 	char *closing = strchr(line, ']');
 	const int len = strlen(line);
 	/* stop if the last char is not a closing bracket */
 	if (!closing || line + len - 1 != closing) {
 		error("malformated section \"%s\"", line);
 		return 1;
 	}
 	if (size - 1 < len - 2) {
 		error("section name too long \"%s\"", line);
 		return 1;
 	}
 	memcpy(name, line + 1, len - 2);
 	name[len - 2] = '\0';
 	return 0;
 }
 static int
 parse_property(const char *line, struct properties *props, bool strict)
 {
 	char *equal = strchr(line, '=');
 	const char *key, *value;
 	if (!equal) {
 		error("malformated property, should be a key=value pair");
 		return 1;
 	}
 	/* split key and value */
 	*equal = '\0';
 	key = line;
 	value = equal + 1;
 #define PARSE(_name, _size, _flags) \
 	if ((!strict || (_flags) & PROP_I3BAR) && strcmp(key, #_name) == 0) { \
 		strncpy(props->_name, value, _size - 1); \
 		return 0; \
 	}
 	PROPERTIES(PARSE);
 #undef PARSE
 	error("unknown key: \"%s\"", key);
 	return 1;
 }
 static struct bar *
 parse_bar(FILE *fp)
 {
 	char line[2048];
 	struct block *block = NULL;
 	struct block global = {};
 	struct bar *bar;
 	bar = calloc(1, sizeof(struct bar));
 	if (!bar)
 		return NULL;
 	while (fgets(line, sizeof(line), fp) != NULL) {
 		int len = strlen(line);
 		if (line[len - 1] != '\n') {
 			error("line \"%s\" is not terminated by a newline", line);
 			goto free;
 		}
 		line[len - 1] = '\0';
 		switch (*line) {
 		/* Comment or empty line? */
 		case '#':
 		case '\0':
 			break;
 		/* Section? */
 		case '[':
 			/* Finalize previous block */
 			if (block)
 				block_setup(block);
 			block = add_block(bar);
 			if (!block)
 				goto free;
 			/* Init the block with default settings (if any) */
 			memcpy(block, &global, sizeof(struct block));
 			if (parse_section(line, block->default_props.name, sizeof(block->default_props.name)))
 				goto free;
 			bdebug(block, "new block");
 			break;
 		/* Property? */
 		case 'a' ... 'z':
 			if (!block) {
 				debug("parsing global properties");
 				block = &global;
 			}
 			if (parse_property(line, &block->default_props, false))
 				goto free;
 			break;
 		/* Syntax error */
 		default:
 			error("malformated line: %s", line);
 			goto free;
 		}
 	}
 	/* Finalize the last block */
 	if (block)
 		block_setup(block);
 	return bar;
 free:
 	free(bar->blocks);
 	free(bar);
 	return NULL;
 }
 static struct bar *
 try_parse(const char *path, bool *found)
 {
 	struct bar *bar = NULL;
 	bool noent = false;
 	FILE *fp = fopen(path, "r");
 	debug("try file %s", path);
 	if (!fp) {
 		if (errno == ENOENT && found)
 			noent = true;
 		else
 			errorx("fopen");
 	} else {
 		bar = parse_bar(fp);
 		if (fclose(fp))
 			errorx("fclose");
 	}
 	if (found)
 		*found = !noent;
 	return bar;
 }
 struct bar *
 ini_load(const char *inifile)
 {
 	const char * const home = getenv("HOME");
 	const char * const xdg_home = getenv("XDG_CONFIG_HOME");
 	const char * const xdg_dirs = getenv("XDG_CONFIG_DIRS");
 	char buf[PATH_MAX];
 	struct bar *bar;
 	bool found;
 	/* command line config file? */
 	if (inifile)
 		return try_parse(inifile, NULL);
 	/* user config file? */
 	if (home) {
 		if (xdg_home)
 			snprintf(buf, PATH_MAX, "%s/i3blocks/config", xdg_home);
 		else
 			snprintf(buf, PATH_MAX, "%s/.config/i3blocks/config", home);
 		bar = try_parse(buf, &found);
 		if (found)
 			return bar;
 		snprintf(buf, PATH_MAX, "%s/.i3blocks.conf", home);
 		bar = try_parse(buf, &found);
 		if (found)
 			return bar;
 	}
 	/* system config file? */
 	if (xdg_dirs)
 		snprintf(buf, PATH_MAX, "%s/i3blocks/config", xdg_dirs);
 	else
 		snprintf(buf, PATH_MAX, "%s/xdg/i3blocks/config", SYSCONFDIR);
 	bar = try_parse(buf, &found);
 	if (found)
 		return bar;
 	snprintf(buf, PATH_MAX, "%s/i3blocks.conf", SYSCONFDIR);
 	return try_parse(buf, NULL);
 }
--- a/packages/i3blocks-gaps/src/io.c
+++ b/packages/i3blocks-gaps/src/io.c
@ -0,0 +1,91 @@
 /*
 * io.c - non-blocking I/O operations
 * Copyright (C) 2015  Vivien Didelot
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 <http://www.gnu.org/licenses/>.
 */
 #define _GNU_SOURCE /* for F_SETSIG */
 #include <fcntl.h>
 #include <unistd.h>
 #include "log.h"
 int
 io_signal(int fd, int sig)
 {
 	int flags;
 	/* Assign the signal for this file descriptor */
 	if (fcntl(fd, F_SETSIG, sig) == -1) {
 		errorx("failed to set signal %d on fd %d", sig, fd);
 		return 1;
 	}
 	/* Set owner process that is to receive "I/O possible" signal */
 	if (fcntl(fd, F_SETOWN, getpid()) == -1) {
 		errorx("failed to set process as owner of fd %d", fd);
 		return 1;
 	}
 	flags = fcntl(fd, F_GETFL);
 	if (flags == -1) {
 		errorx("failed to get flags of fd %d", fd);
 		return 1;
 	}
 	/* Enable "I/O possible" signaling and make I/O nonblocking */
 	if (fcntl(fd, F_SETFL, flags | O_ASYNC | O_NONBLOCK) == -1) {
 		errorx("failed to enable I/O signaling for fd %d", fd);
 		return 1;
 	}
 	return 0;
 }
 static ssize_t
 read_nonblock(int fd, char *buf, size_t size)
 {
 	ssize_t nr;
 	nr = read(fd, buf, size);
 	if (nr == -1) {
 		if (errno == EAGAIN) {
 			/* no more reading */
 			return 0;
 		}
 		errorx("read from %d", fd);
 		return -1;
 	}
 	/* Note read(2) returns 0 for end-of-pipe */
 	return nr;
 }
 int
 io_readline(int fd, char *buffer, size_t size)
 {
 	int nr = 0;
 	char c;
 	while (nr < size && read_nonblock(fd, &c, 1) > 0) {
 		buffer[nr++] = c;
 		if (c == '\n')
 			break;
    }
 	return nr;
 }
--- a/packages/i3blocks-gaps/src/json.c
+++ b/packages/i3blocks-gaps/src/json.c
@ -0,0 +1,156 @@
 /*
 * json.c - basic JSON parsing and printing
 * Copyright (C) 2014  Vivien Didelot
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 <http://www.gnu.org/licenses/>.
 */
 #include <ctype.h>
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include "bar.h"
 #include "block.h"
 static inline bool
 is_number(const char *str)
 {
 	char *end;
 	strtoul(str, &end, 10);
 	/* not a valid number if end is not a null character */
 	return !(*str == 0 || *end != 0);
 }
 static inline void
 escape(const char *str)
 {
 	fprintf(stdout, "\"");
 	while (*str) {
 		switch (*str) {
 		case '"':
 		case '\\':
 			fprintf(stdout, "\\%c", *str);
 			break;
 		default:
 			fprintf(stdout, "%c", *str);
 		}
 		str++;
 	}
 	fprintf(stdout, "\"");
 }
 static void
 print_prop(const char *key, const char *value, int flags)
 {
 	/* Only print i3bar-specific properties */
 	if (!(flags & PROP_I3BAR))
 		return;
 	if (!*value)
 		return;
 	fprintf(stdout, ",\"%s\":", key);
 	/* Print as-is (except strings which must be escaped) */
 	if (flags & PROP_STRING && flags & PROP_NUMBER && is_number(value))
 		fprintf(stdout, "%s", value);
 	else if (flags & PROP_STRING)
 		escape(value);
 	else
 		fprintf(stdout, "%s", value);
 }
 static void
 print_block(struct block *block)
 {
 #define PRINT(_name, _size, _flags) \
 	print_prop(#_name, block->updated_props._name, _flags); \
 	fprintf(stdout, ",{\"\":\"\"");
 	PROPERTIES(PRINT);
 	fprintf(stdout, "}");
 #undef PRINT
 }
 /*
 * Parse the <json> input for the key <name> and store the start of its value
 * into <start> and its size into <len>.
 *
 * <start> set to 0 means that the key was not present.
 */
 void
 json_parse(const char *json, const char *name, int *start, int *len)
 {
 	const size_t keylen = strlen(name) + 2;
 	char key[keylen + 1];
 	snprintf(key, sizeof(key), "\"%s\"", name);
 	*start = *len = 0;
 	char *here = strstr(json, key);
 	if (here) {
 		here += keylen + 1;
 		/* skip pre-value whitespace */
 		while (isspace(*here))
 			here++;
 		if (*here == '"') {
 			/* string */
 			here++;
 			*start = here - json;
 			while (*here && *here != '"')
 				*len += 1, here++;
 			/* invalidate on incomplete string */
 			if (*here != '"')
 				*start = 0;
 		} else {
 			/* number */
 			*start = here - json;
 			while (isdigit(*here++))
 				*len += 1;
 		}
 	}
 }
 void
 json_print_bar(struct bar *bar)
 {
 	fprintf(stdout, ",[{\"full_text\":\"\"}");
 	for (int i = 0; i < bar->num; ++i) {
 		struct block *block = bar->blocks + i;
 		/* full_text is the only mandatory key, skip if empty */
 		if (!*FULL_TEXT(block)) {
 			bdebug(block, "no text to display, skipping");
 			continue;
 		}
 		print_block(block);
 	}
 	fprintf(stdout, "]\n");
 	fflush(stdout);
 }
--- a/packages/i3blocks-gaps/src/main.c
+++ b/packages/i3blocks-gaps/src/main.c
@ -0,0 +1,82 @@
 /*
 * i3blocks.c - main entry point, load the config and start the scheduler
 * Copyright (C) 2014  Vivien Didelot
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 <http://www.gnu.org/licenses/>.
 */
 #include <getopt.h>
 #include <stdio.h>
 #include "ini.h"
 #include "log.h"
 #include "sched.h"
 #ifndef VERSION
 #define VERSION "unknown"
 #endif
 unsigned log_level = LOG_NORMAL;
 static void
 start(void)
 {
 	fprintf(stdout, "{\"version\":1,\"click_events\":true}\n[[]\n");
 	fflush(stdout);
 }
 int
 main(int argc, char *argv[])
 {
 	char *inifile = NULL;
 	struct bar *bar;
 	int c;
 	while (c = getopt(argc, argv, "c:vhV"), c != -1) {
 		switch (c) {
 		case 'c':
 			inifile = optarg;
 			break;
 		case 'v':
 			log_level++;
 			break;
 		case 'h':
 			printf("Usage: %s [-c <configfile>] [-h] [-V]\n", argv[0]);
 			return 0;
 		case 'V':
 			printf("i3blocks " VERSION " © 2014 Vivien Didelot and contributors\n");
 			return 0;
 		default:
 			error("Try '%s -h' for more information.", argv[0]);
 			return 1;
 		}
 	}
 	debug("log level %u", log_level);
 	bar = ini_load(inifile);
 	if (!bar) {
 		error("Try '%s -h' for more information.", argv[0]);
 		return 1;
 	}
 	if (sched_init(bar))
 		return 1;
 	start();
 	sched_start(bar);
 	//stop();
 	return 0;
 }
--- a/packages/i3blocks-gaps/src/sched.c
+++ b/packages/i3blocks-gaps/src/sched.c
@ -0,0 +1,221 @@
 /*
 * sched.c - scheduling of block updates (timeout, signal or click)
 * Copyright (C) 2014  Vivien Didelot
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 <http://www.gnu.org/licenses/>.
 */
 #include <errno.h>
 #include <fcntl.h>
 #include <signal.h>
 #include <stdio.h>
 #include <string.h>
 #include <sys/time.h>
 #include <sys/wait.h>
 #include <unistd.h>
 #include "bar.h"
 #include "block.h"
 #include "io.h"
 #include "json.h"
 #include "log.h"
 static sigset_t set;
 static int
 gcd(int a, int b)
 {
 	while (b != 0)
 		a %= b, a ^= b, b ^= a, a ^= b;
 	return a;
 }
 static unsigned int
 longest_sleep(struct bar *bar)
 {
 	unsigned int time = 0;
 	if (bar->num > 0 && bar->blocks->interval > 0)
 		time = bar->blocks->interval; /* first block's interval */
 	if (bar->num < 2)
 		return time;
 	/* The maximum sleep time is actually the GCD between all block intervals */
 	for (int i = 1; i < bar->num; ++i)
 		if ((bar->blocks + i)->interval > 0)
 			time = gcd(time, (bar->blocks + i)->interval);
 	return time;
 }
 static int
 setup_timer(struct bar *bar)
 {
 	const unsigned sleeptime = longest_sleep(bar);
 	if (!sleeptime) {
 		debug("no timer needed");
 		return 0;
 	}
 	struct itimerval itv = {
 		.it_value.tv_sec = sleeptime,
 		.it_interval.tv_sec = sleeptime,
 	};
 	if (setitimer(ITIMER_REAL, &itv, NULL) == -1) {
 		errorx("setitimer");
 		return 1;
 	}
 	debug("starting timer with interval of %d seconds", sleeptime);
 	return 0;
 }
 static int
 setup_signals(void)
 {
 	if (sigemptyset(&set) == -1) {
 		errorx("sigemptyset");
 		return 1;
 	}
 #define ADD_SIG(_sig) \
 	if (sigaddset(&set, _sig) == -1) { errorx("sigaddset(%d)", _sig); return 1; }
 	/* Control signals */
 	ADD_SIG(SIGTERM);
 	ADD_SIG(SIGINT);
 	/* Timer signal */
 	ADD_SIG(SIGALRM);
 	/* Block updates (forks) */
 	ADD_SIG(SIGCHLD);
 	/* Deprecated signals */
 	ADD_SIG(SIGUSR1);
 	ADD_SIG(SIGUSR2);
 	/* Click signal */
 	ADD_SIG(SIGIO);
 	/* I/O Possible signal for persistent blocks */
 	ADD_SIG(SIGRTMIN);
 	/* Real-time signals for blocks */
 	for (int sig = SIGRTMIN + 1; sig <= SIGRTMAX; ++sig) {
 		debug("provide signal %d (%s)", sig, strsignal(sig));
 		ADD_SIG(sig);
 	}
 #undef ADD_SIG
 	/* Block signals for which we are interested in waiting */
 	if (sigprocmask(SIG_SETMASK, &set, NULL) == -1) {
 		errorx("sigprocmask");
 		return 1;
 	}
 	return 0;
 }
 int
 sched_init(struct bar *bar)
 {
 	if (setup_signals())
 		return 1;
 	if (setup_timer(bar))
 		return 1;
 	/* Setup event I/O for stdin (clicks) */
 	if (!isatty(STDIN_FILENO))
 		if (io_signal(STDIN_FILENO, SIGIO))
 			return 1;
 	return 0;
 }
 void
 sched_start(struct bar *bar)
 {
 	siginfo_t siginfo;
 	int sig;
 	/*
 	 * Initial display (for static blocks and loading labels),
 	 * and first forks (for commands with an interval).
 	 */
 	json_print_bar(bar);
 	bar_poll_timed(bar);
 	while (1) {
 		sig = sigwaitinfo(&set, &siginfo);
 		if (sig == -1) {
 			/* Hiding the bar may interrupt this system call */
 			if (errno == EINTR)
 				continue;
 			errorx("sigwaitinfo");
 			break;
 		}
 		debug("received signal %d (%s)", sig, strsignal(sig));
 		if (sig == SIGTERM || sig == SIGINT)
 			break;
 		/* Interval tick? */
 		if (sig == SIGALRM) {
 			bar_poll_outdated(bar);
 		/* Child(ren) dead? */
 		} else if (sig == SIGCHLD) {
 			bar_poll_exited(bar);
 			json_print_bar(bar);
 		/* Block clicked? */
 		} else if (sig == SIGIO) {
 			bar_poll_clicked(bar);
 		/* Persistent block ready to be read? */
 		} else if (sig == SIGRTMIN) {
 			bar_poll_readable(bar, siginfo.si_fd);
 			json_print_bar(bar);
 		/* Blocks signaled? */
 		} else if (sig > SIGRTMIN && sig <= SIGRTMAX) {
 			bar_poll_signaled(bar, sig - SIGRTMIN);
 		/* Deprecated signals? */
 		} else if (sig == SIGUSR1 || sig == SIGUSR2) {
 			error("SIGUSR{1,2} are deprecated, ignoring.");
 		} else debug("unhandled signal %d", sig);
 	}
 	/*
 	 * Unblock signals (so subsequent syscall can be interrupted)
 	 * and wait for child processes termination.
 	 */
 	if (sigprocmask(SIG_UNBLOCK, &set, NULL) == -1)
 		errorx("sigprocmask");
 	while (waitpid(-1, NULL, 0) > 0)
 		continue;
 	debug("quit scheduling");
 }