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Diffstat (limited to '')
| -rwxr-xr-x | local/bin/pfetch | 1958 |
1 files changed, 1958 insertions, 0 deletions
diff --git a/local/bin/pfetch b/local/bin/pfetch new file mode 100755 index 0000000..d47b878 --- /dev/null +++ b/local/bin/pfetch @@ -0,0 +1,1958 @@ +#!/bin/sh +# +# pfetch - Simple POSIX sh fetch script. + +# Wrapper around all escape sequences used by pfetch to allow for +# greater control over which sequences are used (if any at all). +esc() { + case $1 in + CUU) e="${esc_c}[${2}A" ;; # cursor up + CUD) e="${esc_c}[${2}B" ;; # cursor down + CUF) e="${esc_c}[${2}C" ;; # cursor right + CUB) e="${esc_c}[${2}D" ;; # cursor left + + # text formatting + SGR) + case ${PF_COLOR:=1} in + (1) + e="${esc_c}[${2}m" + ;; + + (0) + # colors disabled + e= + ;; + esac + ;; + + # line wrap + DECAWM) + case $TERM in + (dumb | minix | cons25) + # not supported + e= + ;; + + (*) + e="${esc_c}[?7${2}" + ;; + esac + ;; + esac +} + +# Print a sequence to the terminal. +esc_p() { + esc "$@" + printf '%s' "$e" +} + +# This is just a simple wrapper around 'command -v' to avoid +# spamming '>/dev/null' throughout this function. This also guards +# against aliases and functions. +has() { + _cmd=$(command -v "$1") 2>/dev/null || return 1 + [ -x "$_cmd" ] || return 1 +} + +log() { + # The 'log()' function handles the printing of information. + # In 'pfetch' (and 'neofetch'!) the printing of the ascii art and info + # happen independently of each other. + # + # The size of the ascii art is stored and the ascii is printed first. + # Once the ascii is printed, the cursor is located right below the art + # (See marker $[1]). + # + # Using the stored ascii size, the cursor is then moved to marker $[2]. + # This is simply a cursor up escape sequence using the "height" of the + # ascii art. + # + # 'log()' then moves the cursor to the right the "width" of the ascii art + # with an additional amount of padding to add a gap between the art and + # the information (See marker $[3]). + # + # When 'log()' has executed, the cursor is then located at marker $[4]. + # When 'log()' is run a second time, the next line of information is + # printed, moving the cursor to marker $[5]. + # + # Markers $[4] and $[5] repeat all the way down through the ascii art + # until there is no more information left to print. + # + # Every time 'log()' is called the script keeps track of how many lines + # were printed. When printing is complete the cursor is then manually + # placed below the information and the art according to the "heights" + # of both. + # + # The math is simple: move cursor down $((ascii_height - info_height)). + # If the aim is to move the cursor from marker $[5] to marker $[6], + # plus the ascii height is 8 while the info height is 2 it'd be a move + # of 6 lines downwards. + # + # However, if the information printed is "taller" (takes up more lines) + # than the ascii art, the cursor isn't moved at all! + # + # Once the cursor is at marker $[6], the script exits. This is the gist + # of how this "dynamic" printing and layout works. + # + # This method allows ascii art to be stored without markers for info + # and it allows for easy swapping of info order and amount. + # + # $[2] ___ $[3] goldie@KISS + # $[4](.· | $[5] os KISS Linux + # (<> | + # / __ \ + # ( / \ /| + # _/\ __)/_) + # \/-____\/ + # $[1] + # + # $[6] /home/goldie $ + + # End here if no data was found. + [ "$2" ] || return + + # Store the values of '$1' and '$3' as we reset the argument list below. + name=$1 + use_seperator=$3 + + # Use 'set --' as a means of stripping all leading and trailing + # white-space from the info string. This also normalizes all + # white-space inside of the string. + # + # Disable the shellcheck warning for word-splitting + # as it's safe and intended ('set -f' disables globbing). + # shellcheck disable=2046,2086 + { + set -f + set +f -- $2 + info=$* + } + + # Move the cursor to the right, the width of the ascii art with an + # additional gap for text spacing. + esc_p CUF "$ascii_width" + + # Print the info name and color the text. + esc_p SGR "3${PF_COL1-4}"; + esc_p SGR 1 + printf '%s' "$name" + esc_p SGR 0 + + # Print the info name and info data separator, if applicable. + [ "$use_seperator" ] || printf %s "$PF_SEP" + + # Move the cursor backward the length of the *current* info name and + # then move it forwards the length of the *longest* info name. This + # aligns each info data line. + esc_p CUB "${#name}" + esc_p CUF "${PF_ALIGN:-$info_length}" + + # Print the info data, color it and strip all leading whitespace + # from the string. + esc_p SGR "3${PF_COL2-9}" + printf '%s' "$info" + esc_p SGR 0 + printf '\n' + + # Keep track of the number of times 'log()' has been run. + info_height=$((${info_height:-0} + 1)) +} + +get_title() { + # Username is retrieved by first checking '$USER' with a fallback + # to the 'id -un' command. + user=${USER:-$(id -un)} + + # Hostname is retrieved by first checking '$HOSTNAME' with a fallback + # to the 'hostname' command. + # + # Disable the warning about '$HOSTNAME' being undefined in POSIX sh as + # the intention for using it is allowing the user to overwrite the + # value on invocation. + # shellcheck disable=3028,2039 + hostname=${HOSTNAME:-${hostname:-$(hostname)}} + + # If the hostname is still not found, fallback to the contents of the + # /etc/hostname file. + [ "$hostname" ] || read -r hostname < /etc/hostname + + # Add escape sequences for coloring to user and host name. As we embed + # them directly in the arguments passed to log(), we cannot use esc_p(). + esc SGR 1 + user=$e$user + esc SGR "3${PF_COL3:-1}" + user=$e$user + esc SGR 1 + user=$user$e + esc SGR 1 + hostname=$e$hostname + esc SGR "3${PF_COL3:-1}" + hostname=$e$hostname + + log "${user}@${hostname}" " " " " >&6 +} + +get_os() { + # This function is called twice, once to detect the distribution name + # for the purposes of picking an ascii art early and secondly to display + # the distribution name in the info output (if enabled). + # + # On first run, this function displays _nothing_, only on the second + # invocation is 'log()' called. + [ "$distro" ] && { + log os "$distro" >&6 + return + } + + case $os in + (Linux*) + # Some Linux distributions (which are based on others) + # fail to identify as they **do not** change the upstream + # distribution's identification packages or files. + # + # It is senseless to add a special case in the code for + # each and every distribution (which _is_ technically no + # different from what it is based on) as they're either too + # lazy to modify upstream's identification files or they + # don't have the know-how (or means) to ship their own + # lsb-release package. + # + # This causes users to think there's a bug in system detection + # tools like neofetch or pfetch when they technically *do* + # function correctly. + # + # Exceptions are made for distributions which are independent, + # not based on another distribution or follow different + # standards. + # + # This applies only to distributions which follow the standard + # by shipping unmodified identification files and packages + # from their respective upstreams. + if has lsb_release; then + distro=$(lsb_release -sd) + + # Android detection works by checking for the existence of + # the follow two directories. I don't think there's a simpler + # method than this. + elif [ -d /system/app ] && [ -d /system/priv-app ]; then + distro="Android $(getprop ro.build.version.release)" + + elif [ -f /etc/os-release ]; then + # This used to be a simple '. /etc/os-release' but I believe + # this is insecure as we blindly executed whatever was in the + # file. This parser instead simply handles 'key=val', treating + # the file contents as plain-text. + while IFS='=' read -r key val; do + case $key in + (PRETTY_NAME) + distro=$val + ;; + esac + done < /etc/os-release + + else + # Special cases for (independent) distributions which + # don't follow any os-release/lsb standards whatsoever. + has crux && distro=$(crux) + has guix && distro='Guix System' + fi + + # 'os-release' and 'lsb_release' sometimes add quotes + # around the distribution name, strip them. + distro=${distro##[\"\']} + distro=${distro%%[\"\']} + + # Check to see if we're running Bedrock Linux which is + # very unique. This simply checks to see if the user's + # PATH contains a Bedrock specific value. + case $PATH in + (*/bedrock/cross/*) + distro='Bedrock Linux' + ;; + esac + + # Check to see if Linux is running in Windows 10 under + # WSL1 (Windows subsystem for Linux [version 1]) and + # append a string accordingly. + # + # If the kernel version string ends in "-Microsoft", + # we're very likely running under Windows 10 in WSL1. + if [ "$WSLENV" ]; then + distro="${distro}${WSLENV+ on Windows 10 [WSL2]}" + + # Check to see if Linux is running in Windows 10 under + # WSL2 (Windows subsystem for Linux [version 2]) and + # append a string accordingly. + # + # This checks to see if '$WSLENV' is defined. This + # appends the Windows 10 string even if '$WSLENV' is + # empty. We only need to check that is has been _exported_. + elif [ -z "${kernel%%*-Microsoft}" ]; then + distro="$distro on Windows 10 [WSL1]" + fi + ;; + + (Darwin*) + # Parse the SystemVersion.plist file to grab the macOS + # version. The file is in the following format: + # + # <key>ProductVersion</key> + # <string>10.14.6</string> + # + # 'IFS' is set to '<>' to enable splitting between the + # keys and a second 'read' is used to operate on the + # next line directly after a match. + # + # '_' is used to nullify a field. '_ _ line _' basically + # says "populate $line with the third field's contents". + while IFS='<>' read -r _ _ line _; do + case $line in + # Match 'ProductVersion' and read the next line + # directly as it contains the key's value. + ProductVersion) + IFS='<>' read -r _ _ mac_version _ + continue + ;; + + ProductName) + IFS='<>' read -r _ _ mac_product _ + continue + ;; + esac + done < /System/Library/CoreServices/SystemVersion.plist + + # Use the ProductVersion to determine which macOS/OS X codename + # the system has. As far as I'm aware there's no "dynamic" way + # of grabbing this information. + case $mac_version in + (10.4*) distro='Mac OS X Tiger' ;; + (10.5*) distro='Mac OS X Leopard' ;; + (10.6*) distro='Mac OS X Snow Leopard' ;; + (10.7*) distro='Mac OS X Lion' ;; + (10.8*) distro='OS X Mountain Lion' ;; + (10.9*) distro='OS X Mavericks' ;; + (10.10*) distro='OS X Yosemite' ;; + (10.11*) distro='OS X El Capitan' ;; + (10.12*) distro='macOS Sierra' ;; + (10.13*) distro='macOS High Sierra' ;; + (10.14*) distro='macOS Mojave' ;; + (10.15*) distro='macOS Catalina' ;; + (11*) distro='macOS Big Sur' ;; + (12*) distro='macOS Monterey' ;; + (*) distro='macOS' ;; + esac + + # Use the ProductName to determine if we're running in iOS. + case $mac_product in + (iP*) distro='iOS' ;; + esac + + distro="$distro $mac_version" + ;; + + (Haiku) + # Haiku uses 'uname -v' for version information + # instead of 'uname -r' which only prints '1'. + distro=$(uname -sv) + ;; + + (Minix|DragonFly) + distro="$os $kernel" + + # Minix and DragonFly don't support the escape + # sequences used, clear the exit trap. + trap '' EXIT + ;; + + (SunOS) + # Grab the first line of the '/etc/release' file + # discarding everything after '('. + IFS='(' read -r distro _ < /etc/release + ;; + + (OpenBSD*) + # Show the OpenBSD version type (current if present). + # kern.version=OpenBSD 6.6-current (GENERIC.MP) ... + IFS=' =' read -r _ distro openbsd_ver _ <<-EOF + $(sysctl kern.version) + EOF + + distro="$distro $openbsd_ver" + ;; + + (FreeBSD) + distro="$os $(freebsd-version)" + ;; + + (*) + # Catch all to ensure '$distro' is never blank. + # This also handles the BSDs. + distro="$os $kernel" + ;; + esac +} + +get_kernel() { + case $os in + # Don't print kernel output on some systems as the + # OS name includes it. + (*BSD*|Haiku|Minix) + return + ;; + esac + + # '$kernel' is the cached output of 'uname -r'. + log kernel "$kernel" >&6 +} + +get_host() { + case $os in + (Linux*) + # Despite what these files are called, version doesn't + # always contain the version nor does name always contain + # the name. + read -r name < /sys/devices/virtual/dmi/id/product_name + read -r version < /sys/devices/virtual/dmi/id/product_version + read -r model < /sys/firmware/devicetree/base/model + + host="$name $version $model" + ;; + + (Darwin* | FreeBSD* | DragonFly*) + host=$(sysctl -n hw.model) + ;; + + (NetBSD*) + host=$(sysctl -n machdep.dmi.system-vendor \ + machdep.dmi.system-product) + ;; + + (OpenBSD*) + host=$(sysctl -n hw.version) + ;; + + (*BSD* | Minix) + host=$(sysctl -n hw.vendor hw.product) + ;; + esac + + # Turn the host string into an argument list so we can iterate + # over it and remove OEM strings and other information which + # shouldn't be displayed. + # + # Disable the shellcheck warning for word-splitting + # as it's safe and intended ('set -f' disables globbing). + # shellcheck disable=2046,2086 + { + set -f + set +f -- $host + host= + } + + # Iterate over the host string word by word as a means of stripping + # unwanted and OEM information from the string as a whole. + # + # This could have been implemented using a long 'sed' command with + # a list of word replacements, however I want to show that something + # like this is possible in pure sh. + # + # This string reconstruction is needed as some OEMs either leave the + # identification information as "To be filled by OEM", "Default", + # "undefined" etc and we shouldn't print this to the screen. + for word do + # This works by reconstructing the string by excluding words + # found in the "blacklist" below. Only non-matches are appended + # to the final host string. + case $word in + (To | [Bb]e | [Ff]illed | [Bb]y | O.E.M. | OEM |\ + Not | Applicable | Specified | System | Product | Name |\ + Version | Undefined | Default | string | INVALID | � | os |\ + Type1ProductConfigId ) + continue + ;; + esac + + host="$host$word " + done + + # '$arch' is the cached output from 'uname -m'. + log host "${host:-$arch}" >&6 +} + +get_uptime() { + # Uptime works by retrieving the data in total seconds and then + # converting that data into days, hours and minutes using simple + # math. + case $os in + (Linux* | Minix* | SerenityOS*) + IFS=. read -r s _ < /proc/uptime + ;; + + (Darwin* | *BSD* | DragonFly*) + s=$(sysctl -n kern.boottime) + + # Extract the uptime in seconds from the following output: + # [...] { sec = 1271934886, usec = 667779 } Thu Apr 22 12:14:46 2010 + s=${s#*=} + s=${s%,*} + + # The uptime format from 'sysctl' needs to be subtracted from + # the current time in seconds. + s=$(($(date +%s) - s)) + ;; + + (Haiku) + # The boot time is returned in microseconds, convert it to + # regular seconds. + s=$(($(system_time) / 1000000)) + ;; + + (SunOS) + # Split the output of 'kstat' on '.' and any white-space + # which exists in the command output. + # + # The output is as follows: + # unix:0:system_misc:snaptime 14809.906993005 + # + # The parser extracts: ^^^^^ + IFS=' .' read -r _ s _ <<-EOF + $(kstat -p unix:0:system_misc:snaptime) + EOF + ;; + + (IRIX) + # Grab the uptime in a pretty format. Usually, + # 00:00:00 from the 'ps' command. + t=$(LC_ALL=POSIX ps -o etime= -p 1) + + # Split the pretty output into days or hours + # based on the uptime. + case $t in + (*-*) d=${t%%-*} t=${t#*-} ;; + (*:*:*) h=${t%%:*} t=${t#*:} ;; + esac + + h=${h#0} t=${t#0} + + # Convert the split pretty fields back into + # seconds so we may re-convert them to our format. + s=$((${d:-0}*86400 + ${h:-0}*3600 + ${t%%:*}*60 + ${t#*:})) + ;; + esac + + # Convert the uptime from seconds into days, hours and minutes. + d=$((s / 60 / 60 / 24)) + h=$((s / 60 / 60 % 24)) + m=$((s / 60 % 60)) + + # Only append days, hours and minutes if they're non-zero. + case "$d" in ([!0]*) uptime="${uptime}${d}d "; esac + case "$h" in ([!0]*) uptime="${uptime}${h}h "; esac + case "$m" in ([!0]*) uptime="${uptime}${m}m "; esac + + log uptime "${uptime:-0m}" >&6 +} + +get_pkgs() { + # This works by first checking for which package managers are + # installed and finally by printing each package manager's + # package list with each package one per line. + # + # The output from this is then piped to 'wc -l' to count each + # line, giving us the total package count of whatever package + # managers are installed. + packages=$( + case $os in + (Linux*) + # Commands which print packages one per line. + has bonsai && bonsai list + has crux && pkginfo -i + has pacman-key && pacman -Qq + has dpkg && dpkg-query -f '.\n' -W + has rpm && rpm -qa + has xbps-query && xbps-query -l + has apk && apk info + has guix && guix package --list-installed + has opkg && opkg list-installed + + # Directories containing packages. + has kiss && printf '%s\n' /var/db/kiss/installed/*/ + has cpt-list && printf '%s\n' /var/db/cpt/installed/*/ + has brew && printf '%s\n' "$(brew --cellar)/"* + has emerge && printf '%s\n' /var/db/pkg/*/*/ + has pkgtool && printf '%s\n' /var/log/packages/* + has eopkg && printf '%s\n' /var/lib/eopkg/package/* + + # 'nix' requires two commands. + has nix-store && { + nix-store -q --requisites /run/current-system/sw + nix-store -q --requisites ~/.nix-profile + } + ;; + + (Darwin*) + # Commands which print packages one per line. + has pkgin && pkgin list + has dpkg && dpkg-query -f '.\n' -W + + # Directories containing packages. + has brew && printf '%s\n' /usr/local/Cellar/* + + # 'port' prints a single line of output to 'stdout' + # when no packages are installed and exits with + # success causing a false-positive of 1 package + # installed. + # + # 'port' should really exit with a non-zero code + # in this case to allow scripts to cleanly handle + # this behavior. + has port && { + pkg_list=$(port installed) + + case "$pkg_list" in + ("No ports are installed.") + # do nothing + ;; + + (*) + printf '%s\n' "$pkg_list" + ;; + esac + } + ;; + + (FreeBSD*|DragonFly*) + pkg info + ;; + + (OpenBSD*) + printf '%s\n' /var/db/pkg/*/ + ;; + + (NetBSD*) + pkg_info + ;; + + (Haiku) + printf '%s\n' /boot/system/package-links/* + ;; + + (Minix) + printf '%s\n' /usr/pkg/var/db/pkg/*/ + ;; + + (SunOS) + has pkginfo && pkginfo -i + has pkg && pkg list + ;; + + (IRIX) + versions -b + ;; + + (SerenityOS) + while IFS=" " read -r type _; do + [ "$type" != dependency ] && + printf "\n" + done < /usr/Ports/packages.db + ;; + esac | wc -l + ) + + # 'wc -l' can have leading and/or trailing whitespace + # depending on the implementation, so strip them. + # Procedure explained at https://github.com/dylanaraps/pure-sh-bible + # (trim-leading-and-trailing-white-space-from-string) + packages=${packages#"${packages%%[![:space:]]*}"} + packages=${packages%"${packages##*[![:space:]]}"} + + case $os in + # IRIX's package manager adds 3 lines of extra + # output which we must account for here. + (IRIX) + packages=$((packages - 3)) + ;; + + # OpenBSD's wc prints whitespace before the output + # which needs to be stripped. + (OpenBSD) + packages=$((packages)) + ;; + esac + + case $packages in + (1?*|[2-9]*) + log pkgs "$packages" >&6 + ;; + esac +} + +get_memory() { + case $os in + # Used memory is calculated using the following "formula": + # MemUsed = MemTotal + Shmem - MemFree - Buffers - Cached - SReclaimable + # Source: https://github.com/KittyKatt/screenFetch/issues/386 + (Linux*) + # Parse the '/proc/meminfo' file splitting on ':' and 'k'. + # The format of the file is 'key: 000kB' and an additional + # split is used on 'k' to filter out 'kB'. + while IFS=':k ' read -r key val _; do + case $key in + (MemTotal) + mem_used=$((mem_used + val)) + mem_full=$val + ;; + + (Shmem) + mem_used=$((mem_used + val)) + ;; + + (MemFree | Buffers | Cached | SReclaimable) + mem_used=$((mem_used - val)) + ;; + + # If detected this will be used over the above calculation + # for mem_used. Available since Linux 3.14rc. + # See kernel commit 34e431b0ae398fc54ea69ff85ec700722c9da773 + (MemAvailable) + mem_avail=$val + ;; + esac + done < /proc/meminfo + + case $mem_avail in + (*[0-9]*) + mem_used=$(((mem_full - mem_avail) / 1024)) + ;; + + *) + mem_used=$((mem_used / 1024)) + ;; + esac + + mem_full=$((mem_full / 1024)) + ;; + + # Used memory is calculated using the following "formula": + # (wired + active + occupied) * 4 / 1024 + (Darwin*) + mem_full=$(($(sysctl -n hw.memsize) / 1024 / 1024)) + + # Parse the 'vmstat' file splitting on ':' and '.'. + # The format of the file is 'key: 000.' and an additional + # split is used on '.' to filter it out. + while IFS=:. read -r key val; do + case $key in + (*' wired'*|*' active'*|*' occupied'*) + mem_used=$((mem_used + ${val:-0})) + ;; + esac + + # Using '<<-EOF' is the only way to loop over a command's + # output without the use of a pipe ('|'). + # This ensures that any variables defined in the while loop + # are still accessible in the script. + done <<-EOF + $(vm_stat) + EOF + + mem_used=$((mem_used * 4 / 1024)) + ;; + + (OpenBSD*) + mem_full=$(($(sysctl -n hw.physmem) / 1024 / 1024)) + + # This is a really simpler parser for 'vmstat' which grabs + # the used memory amount in a lazy way. 'vmstat' prints 3 + # lines of output with the needed value being stored in the + # final line. + # + # This loop simply grabs the 3rd element of each line until + # the EOF is reached. Each line overwrites the value of the + # previous one so we're left with what we wanted. This isn't + # slow as only 3 lines are parsed. + while read -r _ _ line _; do + mem_used=${line%%M} + + # Using '<<-EOF' is the only way to loop over a command's + # output without the use of a pipe ('|'). + # This ensures that any variables defined in the while loop + # are still accessible in the script. + done <<-EOF + $(vmstat) + EOF + ;; + + # Used memory is calculated using the following "formula": + # mem_full - ((inactive + free + cache) * page_size / 1024) + (FreeBSD*|DragonFly*) + mem_full=$(($(sysctl -n hw.physmem) / 1024 / 1024)) + + # Use 'set --' to store the output of the command in the + # argument list. POSIX sh has no arrays but this is close enough. + # + # Disable the shellcheck warning for word-splitting + # as it's safe and intended ('set -f' disables globbing). + # shellcheck disable=2046 + { + set -f + set +f -- $(sysctl -n hw.pagesize \ + vm.stats.vm.v_inactive_count \ + vm.stats.vm.v_free_count \ + vm.stats.vm.v_cache_count) + } + + # Calculate the amount of used memory. + # $1: hw.pagesize + # $2: vm.stats.vm.v_inactive_count + # $3: vm.stats.vm.v_free_count + # $4: vm.stats.vm.v_cache_count + mem_used=$((mem_full - (($2 + $3 + $4) * $1 / 1024 / 1024))) + ;; + + (NetBSD*) + mem_full=$(($(sysctl -n hw.physmem64) / 1024 / 1024)) + + # NetBSD implements a lot of the Linux '/proc' filesystem, + # this uses the same parser as the Linux memory detection. + while IFS=':k ' read -r key val _; do + case $key in + (MemFree) + mem_free=$((val / 1024)) + break + ;; + esac + done < /proc/meminfo + + mem_used=$((mem_full - mem_free)) + ;; + + (Haiku) + # Read the first line of 'sysinfo -mem' splitting on + # '(', ' ', and ')'. The needed information is then + # stored in the 5th and 7th elements. Using '_' "consumes" + # an element allowing us to proceed to the next one. + # + # The parsed format is as follows: + # 3501142016 bytes free (used/max 792645632 / 4293787648) + IFS='( )' read -r _ _ _ _ mem_used _ mem_full <<-EOF + $(sysinfo -mem) + EOF + + mem_used=$((mem_used / 1024 / 1024)) + mem_full=$((mem_full / 1024 / 1024)) + ;; + + (Minix) + # Minix includes the '/proc' filesystem though the format + # differs from Linux. The '/proc/meminfo' file is only a + # single line with space separated elements and elements + # 2 and 3 contain the total and free memory numbers. + read -r _ mem_full mem_free _ < /proc/meminfo + + mem_used=$(((mem_full - mem_free) / 1024)) + mem_full=$(( mem_full / 1024)) + ;; + + (SunOS) + hw_pagesize=$(pagesize) + + # 'kstat' outputs memory in the following format: + # unix:0:system_pages:pagestotal 1046397 + # unix:0:system_pages:pagesfree 885018 + # + # This simply uses the first "element" (white-space + # separated) as the key and the second element as the + # value. + # + # A variable is then assigned based on the key. + while read -r key val; do + case $key in + (*total) + pages_full=$val + ;; + + (*free) + pages_free=$val + ;; + esac + done <<-EOF + $(kstat -p unix:0:system_pages:pagestotal \ + unix:0:system_pages:pagesfree) + EOF + + mem_full=$((pages_full * hw_pagesize / 1024 / 1024)) + mem_free=$((pages_free * hw_pagesize / 1024 / 1024)) + mem_used=$((mem_full - mem_free)) + ;; + + (IRIX) + # Read the memory information from the 'top' command. Parse + # and split each line until we reach the line starting with + # "Memory". + # + # Example output: Memory: 160M max, 147M avail, ..... + while IFS=' :' read -r label mem_full _ mem_free _; do + case $label in + (Memory) + mem_full=${mem_full%M} + mem_free=${mem_free%M} + break + ;; + esac + done <<-EOF + $(top -n) + EOF + + mem_used=$((mem_full - mem_free)) + ;; + + (SerenityOS) + IFS='{}' read -r _ memstat _ < /proc/memstat + + set -f -- "$IFS" + IFS=, + + for pair in $memstat; do + case $pair in + (*user_physical_allocated*) + mem_used=${pair##*:} + ;; + + (*user_physical_available*) + mem_free=${pair##*:} + ;; + esac + done + + IFS=$1 + set +f -- + + mem_used=$((mem_used * 4096 / 1024 / 1024)) + mem_free=$((mem_free * 4096 / 1024 / 1024)) + + mem_full=$((mem_used + mem_free)) + ;; + esac + + log memory "${mem_used:-?}M / ${mem_full:-?}M" >&6 +} + +get_wm() { + case $os in + (Darwin*) + # Don't display window manager on macOS. + ;; + + (*) + # xprop can be used to grab the window manager's properties + # which contains the window manager's name under '_NET_WM_NAME'. + # + # The upside to using 'xprop' is that you don't need to hardcode + # a list of known window manager names. The downside is that + # not all window managers conform to setting the '_NET_WM_NAME' + # atom.. + # + # List of window managers which fail to set the name atom: + # catwm, fvwm, dwm, 2bwm, monster, wmaker and sowm [mine! ;)]. + # + # The final downside to this approach is that it does _not_ + # support Wayland environments. The only solution which supports + # Wayland is the 'ps' parsing mentioned below. + # + # A more naive implementation is to parse the last line of + # '~/.xinitrc' to extract the second white-space separated + # element. + # + # The issue with an approach like this is that this line data + # does not always equate to the name of the window manager and + # could in theory be _anything_. + # + # This also fails when the user launches xorg through a display + # manager or other means. + # + # + # Another naive solution is to parse 'ps' with a hardcoded list + # of window managers to detect the current window manager (based + # on what is running). + # + # The issue with this approach is the need to hardcode and + # maintain a list of known window managers. + # + # Another issue is that process names do not always equate to + # the name of the window manager. False-positives can happen too. + # + # This is the only solution which supports Wayland based + # environments sadly. It'd be nice if some kind of standard were + # established to identify Wayland environments. + # + # pfetch's goal is to remain _simple_, if you'd like a "full" + # implementation of window manager detection use 'neofetch'. + # + # Neofetch use a combination of 'xprop' and 'ps' parsing to + # support all window managers (including non-conforming and + # Wayland) though it's a lot more complicated! + + # Don't display window manager if X isn't running. + [ "$DISPLAY" ] || return + + # This is a two pass call to xprop. One call to get the window + # manager's ID and another to print its properties. + has xprop && { + # The output of the ID command is as follows: + # _NET_SUPPORTING_WM_CHECK: window id # 0x400000 + # + # To extract the ID, everything before the last space + # is removed. + id=$(xprop -root -notype _NET_SUPPORTING_WM_CHECK) + id=${id##* } + + # The output of the property command is as follows: + # _NAME 8t + # _NET_WM_PID = 252 + # _NET_WM_NAME = "bspwm" + # _NET_SUPPORTING_WM_CHECK: window id # 0x400000 + # WM_CLASS = "wm", "Bspwm" + # + # To extract the name, everything before '_NET_WM_NAME = \"' + # is removed and everything after the next '"' is removed. + wm=$(xprop -id "$id" -notype -len 25 -f _NET_WM_NAME 8t) + } + + # Handle cases of a window manager _not_ populating the + # '_NET_WM_NAME' atom. Display nothing in this case. + case $wm in + (*'_NET_WM_NAME = '*) + wm=${wm##*_NET_WM_NAME = \"} + wm=${wm%%\"*} + ;; + + (*) + # Fallback to checking the process list + # for the select few window managers which + # don't set '_NET_WM_NAME'. + while read -r ps_line; do + case $ps_line in + (*catwm*) wm=catwm ;; + (*fvwm*) wm=fvwm ;; + (*dwm*) wm=dwm ;; + (*2bwm*) wm=2bwm ;; + (*monsterwm*) wm=monsterwm ;; + (*wmaker*) wm='Window Maker' ;; + (*sowm*) wm=sowm ;; + (*penrose*) wm=penrose ;; + esac + done <<-EOF + $(ps x) + EOF + ;; + esac + ;; + esac + + log wm "$wm" >&6 +} + + +get_de() { + # This only supports Xorg related desktop environments though + # this is fine as knowing the desktop environment on Windows, + # macOS etc is useless (they'll always report the same value). + # + # Display the value of '$XDG_CURRENT_DESKTOP', if it's empty, + # display the value of '$DESKTOP_SESSION'. + log de "${XDG_CURRENT_DESKTOP:-$DESKTOP_SESSION}" >&6 +} + +get_shell() { + # Display the basename of the '$SHELL' environment variable. + log shell "${SHELL##*/}" >&6 +} + +get_editor() { + # Display the value of '$VISUAL', if it's empty, display the + # value of '$EDITOR'. + editor=${VISUAL:-"$EDITOR"} + + log editor "${editor##*/}" >&6 +} + +get_palette() { + # Print the first 8 terminal colors. This uses the existing + # sequences to change text color with a sequence prepended + # to reverse the foreground and background colors. + # + # This allows us to save hardcoding a second set of sequences + # for background colors. + # + # False positive. + # shellcheck disable=2154 + { + esc SGR 7 + palette="$e$c1 $c1 $c2 $c2 $c3 $c3 $c4 $c4 $c5 $c5 $c6 $c6 " + esc SGR 0 + palette="$palette$e" + } + + # Print the palette with a new-line before and afterwards but no seperator. + printf '\n' >&6 + log "$palette + " " " " " >&6 +} + +get_ascii() { + # This is a simple function to read the contents of + # an ascii file from 'stdin'. It allows for the use + # of '<<-EOF' to prevent the break in indentation in + # this source code. + # + # This function also sets the text colors according + # to the ascii color. + read_ascii() { + # 'PF_COL1': Set the info name color according to ascii color. + # 'PF_COL3': Set the title color to some other color. ¯\_(ツ)_/¯ + PF_COL1=${PF_COL1:-${1:-7}} + PF_COL3=${PF_COL3:-$((${1:-7}%8+1))} + + # POSIX sh has no 'var+=' so 'var=${var}append' is used. What's + # interesting is that 'var+=' _is_ supported inside '$(())' + # (arithmetic) though there's no support for 'var++/var--'. + # + # There is also no $'\n' to add a "literal"(?) newline to the + # string. The simplest workaround being to break the line inside + # the string (though this has the caveat of breaking indentation). + while IFS= read -r line; do + ascii="$ascii$line +" + done + } + + # This checks for ascii art in the following order: + # '$1': Argument given to 'get_ascii()' directly. + # '$PF_ASCII': Environment variable set by user. + # '$distro': The detected distribution name. + # '$os': The name of the operating system/kernel. + # + # NOTE: Each ascii art below is indented using tabs, this + # allows indentation to continue naturally despite + # the use of '<<-EOF'. + # + # False positive. + # shellcheck disable=2154 + case ${1:-${PF_ASCII:-${distro:-$os}}} in + ([Aa]lpine*) + read_ascii 4 <<-EOF + ${c4} /\\ /\\ + /${c7}/ ${c4}\\ \\ + /${c7}/ ${c4}\\ \\ + /${c7}// ${c4}\\ \\ + ${c7}// ${c4}\\ \\ + ${c4}\\ + EOF + ;; + + ([Aa]ndroid*) + read_ascii 2 <<-EOF + ${c2} ;, ,; + ${c2} ';,.-----.,;' + ${c2} ,' ', + ${c2} / O O \\ + ${c2}| | + ${c2}'-----------------' + EOF + ;; + + ([Aa]rch*) + read_ascii 4 <<-EOF + ${c6} /\\ + ${c6} / \\ + ${c6} /\\ \\ + ${c4} / \\ + ${c4} / ,, \\ + ${c4} / | | -\\ + ${c4} /_-'' ''-_\\ + EOF + ;; + + ([Aa]rco*) + read_ascii 4 <<-EOF + ${c4} /\\ + ${c4} / \\ + ${c4} / /\\ \\ + ${c4} / / \\ \\ + ${c4} / / \\ \\ + ${c4} / / _____\\ \\ + ${c4}/_/ \`----.\\_\\ + EOF + ;; + + ([Aa]rtix*) + read_ascii 6 <<-EOF + ${c4} /\\ + ${c4} / \\ + ${c4} /\`'.,\\ + ${c4} / ', + ${c4} / ,\`\\ + ${c4} / ,.'\`. \\ + ${c4}/.,'\` \`'.\\ + EOF + ;; + + ([Bb]edrock*) + read_ascii 4 <<-EOF + ${c7}__ + ${c7}\\ \\___ + ${c7} \\ _ \\ + ${c7} \\___/ + EOF + ;; + + ([Bb]uildroot*) + read_ascii 3 <<-EOF + ${c3} ___ + ${c3} / \` \\ + ${c3}| : :| + ${c3}-. _:__.- + ${c3} \` ---- \` + EOF + ;; + + ([Cc]el[Oo][Ss]*) + read_ascii 5 0 <<-EOF + ${c5} .////\\\\\//\\. + ${c5} //_ \\\\ + ${c5} /_ ${c7}############## + ${c5} // *\\ + ${c7}############### ${c5}|# + ${c5} \/ */ + ${c5} \* ${c7}############## + ${c5} */, .// + ${c5} '_///\\\\\//_' + EOF + ;; + + ([Cc]ent[Oo][Ss]*) + read_ascii 5 <<-EOF + ${c2} ____${c3}^${c5}____ + ${c2} |\\ ${c3}|${c5} /| + ${c2} | \\ ${c3}|${c5} / | + ${c5}<---- ${c4}----> + ${c4} | / ${c2}|${c3} \\ | + ${c4} |/__${c2}|${c3}__\\| + ${c2} v + EOF + ;; + + ([Cc]rystal*[Ll]inux) + read_ascii 5 5 <<-EOF + ${c5} -//. + ${c5} -//. + ${c5} -//. . + ${c5} -//. '//- + ${c5} /+: :+/ + ${c5} .//' .//. + ${c5} . .//. + ${c5} .//. + ${c5} .//. + EOF + ;; + + ([Dd]ahlia*) + read_ascii 1 <<-EOF + ${c1} _ + ${c1} ___/ \\___ + ${c1} | _-_ | + ${c1} | / \ | + ${c1}/ | | \\ + ${c1}\\ | | / + ${c1} | \ _ _ / | + ${c1} |___ - ___| + ${c1} \\_/ + EOF + ;; + + ([Dd]ebian*) + read_ascii 1 <<-EOF + ${c1} _____ + ${c1} / __ \\ + ${c1}| / | + ${c1}| \\___- + ${c1}-_ + ${c1} --_ + EOF + ;; + + ([Dd]evuan*) + read_ascii 6 <<-EOF + ${c4} ..:::. + ${c4} ..-==- + ${c4} .+#: + ${c4} =@@ + ${c4} :+%@#: + ${c4}.:=+#@@%*: + ${c4}#@@@#=: + EOF + ;; + + ([Dd]ragon[Ff]ly*) + read_ascii 1 <<-EOF + ,${c1}_${c7}, + ('-_${c1}|${c7}_-') + >--${c1}|${c7}--< + (_-'${c1}|${c7}'-_) + ${c1}| + ${c1}| + ${c1}| + EOF + ;; + + ([Ee]lementary*) + read_ascii <<-EOF + ${c7} _______ + ${c7} / ____ \\ + ${c7}/ | / /\\ + ${c7}|__\\ / / | + ${c7}\\ /__/ / + ${c7}\\_______/ + EOF + ;; + + ([Ee]ndeavour*) + read_ascii 4 <<-EOF + ${c1}/${c4}\\ + ${c1}/${c4}/ \\${c6}\\ + ${c1}/${c4}/ \\ ${c6}\\ + ${c1}/ ${c4}/ _) ${c6}) + ${c1}/_${c4}/___-- ${c6}__- + ${c6}/____-- + EOF + ;; + + ([Ff]edora*) + read_ascii 4 <<-EOF + ${c4},'''''. + ${c4}| ,. | + ${c4}| | '_' + ${c4} ,....| |.. + ${c4}.' ,_;| ..' + ${c4}| | | | + ${c4}| ',_,' | + ${c4} '. ,' + ${c4}''''' + EOF + ;; + + ([Ff]ree[Bb][Ss][Dd]*) + read_ascii 1 <<-EOF + ${c1}/\\,-'''''-,/\\ + ${c1}\\_) (_/ + ${c1}| | + ${c1}| | + ${c1}; ; + ${c1}'-_____-' + EOF + ;; + + ([Gg]aruda*) + read_ascii 4 <<-EOF + ${c3} _______ + ${c3} __/ \\_ + ${c3} _/ / \\_ + ${c7} _/ /_________\\ + ${c7}_/ | + ${c2}\\ ____________ + ${c2} \\_ __/ + ${c2} \\__________/ + EOF + ;; + + ([Gg]entoo*) + read_ascii 5 <<-EOF + ${c5} _-----_ + ${c5}( \\ + ${c5}\\ 0 \\ + ${c7} \\ ) + ${c7} / _/ + ${c7}( _- + ${c7}\\____- + EOF + ;; + + ([Gg][Nn][Uu]*) + read_ascii 3 <<-EOF + ${c2} _-\`\`-, ,-\`\`-_ + ${c2} .' _-_| |_-_ '. + ${c2}./ /_._ _._\\ \\. + ${c2}: _/_._\`:'_._\\_ : + ${c2}\\:._/ ,\` \\ \\ \\_.:/ + ${c2} ,-';'.@) \\ @) \\ + ${c2} ,'/' ..- .\\,-.| + ${c2} /'/' \\(( \\\` ./ ) + ${c2} '/'' \\_,----' + ${c2} '/'' ,;/'' + ${c2} \`\`;' + EOF + ;; + + ([Gg]uix[Ss][Dd]*|[Gg]uix*) + read_ascii 3 <<-EOF + ${c3}|.__ __.| + ${c3}|__ \\ / __| + ${c3}\\ \\ / / + ${c3}\\ \\ / / + ${c3}\\ \\ / / + ${c3}\\ \\/ / + ${c3}\\__/ + EOF + ;; + + ([Hh]aiku*) + read_ascii 3 <<-EOF + ${c3} ,^, + ${c3} / \\ + ${c3}*--_ ; ; _--* + ${c3}\\ '" "' / + ${c3}'. .' + ${c3}.-'" "'-. + ${c3}'-.__. .__.-' + ${c3}|_| + EOF + ;; + + ([Hh]ydroOS*) + read_ascii 4 <<-EOF + ${c1}╔╗╔╗──╔╗───╔═╦══╗ + ${c1}║╚╝╠╦╦╝╠╦╦═╣║║══╣ + ${c1}║╔╗║║║╬║╔╣╬║║╠══║ + ${c1}╚╝╚╬╗╠═╩╝╚═╩═╩══╝ + ${c1}───╚═╝ + EOF + ;; + + ([Hh]yperbola*) + read_ascii <<-EOF + ${c7} |\`__.\`/ + ${c7} \____/ + ${c7} .--. + ${c7} / \\ + ${c7} / ___ \\ + ${c7}/ .\` \`.\\ + ${c7}/.\` \`.\\ + EOF + ;; + + ([Ii]glunix*) + read_ascii <<-EOF + ${c0} | + ${c0} | | + ${c0} | + ${c0} | ________ + ${c0} | /\\ | \\ + ${c0} / \\ | \\ | + ${c0} / \\ \\ | + ${c0} / \\________\\ + ${c0} \\ / / + ${c0} \\ / / + ${c0} \\ / / + ${c0} \\/________/ + EOF + ;; + + ([Ii]nstant[Oo][Ss]*) + read_ascii <<-EOF + ${c0} ,-''-, + ${c0}: .''. : + ${c0}: ',,' : + ${c0} '-____:__ + ${c0} : \`. + ${c0} \`._.' + EOF + ;; + + ([Ii][Rr][Ii][Xx]*) + read_ascii 1 <<-EOF + ${c1} __ + ${c1} \\ \\ __ + ${c1} \\ \\ / / + ${c1} \\ v / + ${c1} / . \\ + ${c1} /_/ \\ \\ + ${c1} \\_\\ + EOF + ;; + + ([Kk][Dd][Ee]*[Nn]eon*) + read_ascii 6 <<-EOF + ${c7} .${c6}__${c7}.${c6}__${c7}. + ${c6} / _${c7}.${c6}_ \\ + ${c6} / / \\ \\ + ${c7} . ${c6}| ${c7}O${c6} | ${c7}. + ${c6} \\ \\_${c7}.${c6}_/ / + ${c6} \\${c7}.${c6}__${c7}.${c6}__${c7}.${c6}/ + EOF + ;; + + ([Ll]inux*[Ll]ite*|[Ll]ite*) + read_ascii 3 <<-EOF + ${c3} /\\ + ${c3} / \\ + ${c3} / ${c7}/ ${c3}/ + ${c3}> ${c7}/ ${c3}/ + ${c3}\\ ${c7}\\ ${c3}\\ + ${c3}\\_${c7}\\${c3}_\\ + ${c7} \\ + EOF + ;; + + ([Ll]inux*[Mm]int*|[Mm]int) + read_ascii 2 <<-EOF + ${c2} ___________ + ${c2}|_ \\ + ${c2}| ${c7}| _____ ${c2}| + ${c2}| ${c7}| | | | ${c2}| + ${c2}| ${c7}| | | | ${c2}| + ${c2}| ${c7}\\__${c7}___/ ${c2}| + ${c2}\\_________/ + EOF + ;; + + + ([Ll]inux*) + read_ascii 4 <<-EOF + ${c4} ___ + ${c4}(${c7}.. ${c4}| + ${c4}(${c5}<> ${c4}| + ${c4}/ ${c7}__ ${c4}\\ + ${c4}( ${c7}/ \\ ${c4}/| + ${c5}_${c4}/\\ ${c7}__)${c4}/${c5}_${c4}) + ${c5}\/${c4}-____${c5}\/ + EOF + ;; + + ([Mm]ac[Oo][Ss]*|[Dd]arwin*) + read_ascii 1 <<-EOF + ${c2} .:' + ${c2} _ :'_ + ${c3} .'\`_\`-'_\`\`. + ${c1}:________.-' + ${c1}:_______: + ${c4} :_______\`-; + ${c5} \`._.-._.' + EOF + ;; + + ([Mm]ageia*) + read_ascii 2 <<-EOF + ${c6} * + ${c6} * + ${c6} ** + ${c7} /\\__/\\ + ${c7}/ \\ + ${c7}\\ / + ${c7} \\____/ + EOF + ;; + + ([Mm]anjaro*) + read_ascii 2 <<-EOF + ${c2}||||||||| |||| + ${c2}||||||||| |||| + ${c2}|||| |||| + ${c2}|||| |||| |||| + ${c2}|||| |||| |||| + ${c2}|||| |||| |||| + ${c2}|||| |||| |||| + EOF + ;; + + ([Mm]inix*) + read_ascii 4 <<-EOF + ${c4} ,, ,, + ${c4};${c7},${c4} ', ,' ${c7},${c4}; + ${c4}; ${c7}',${c4} ',,' ${c7},'${c4} ; + ${c4}; ${c7}',${c4} ${c7},'${c4} ; + ${c4}; ${c7};, '' ,;${c4} ; + ${c4}; ${c7};${c4};${c7}',,'${c4};${c7};${c4} ; + ${c4}', ${c7};${c4};; ;;${c7};${c4} ,' + ${c4} '${c7};${c4}' '${c7};${c4}' + EOF + ;; + + ([Mm][Xx]*) + read_ascii <<-EOF + ${c7} \\\\ / + ${c7} \\\\/ + ${c7} \\\\ + ${c7} /\\/ \\\\ + ${c7} / \\ /\\ + ${c7} / \\/ \\ + ${c7}/__________\\ + EOF + ;; + + ([Nn]et[Bb][Ss][Dd]*) + read_ascii 3 <<-EOF + ${c7}\\\\${c3}\`-______,----__ + ${c7} \\\\ ${c3}__,---\`_ + ${c7} \\\\ ${c3}\`.____ + ${c7} \\\\${c3}-______,----\`- + ${c7} \\\\ + ${c7} \\\\ + ${c7} \\\\ + EOF + ;; + + ([Nn]ix[Oo][Ss]*) + read_ascii 4 <<-EOF + ${c4} \\\\ \\\\ // + ${c4} ==\\\\__\\\\/ // + ${c4} // \\\\// + ${c4}==// //== + ${c4} //\\\\___// + ${c4}// /\\\\ \\\\== + ${c4} // \\\\ \\\\ + EOF + ;; + + ([Oo]pen[Bb][Ss][Dd]*) + read_ascii 3 <<-EOF + ${c3} _____ + ${c3} \\- -/ + ${c3} \\_/ \\ + ${c3} | ${c7}O O${c3} | + ${c3} |_ < ) 3 ) + ${c3} / \\ / + ${c3} /-_____-\\ + EOF + ;; + + ([Oo]pen[Ss][Uu][Ss][Ee]*[Tt]umbleweed*) + read_ascii 2 <<-EOF + ${c2} _____ ______ + ${c2} / ____\\ / ____ \\ + ${c2}/ / \`/ / \\ \\ + ${c2}\\ \\____/ /,____/ / + ${c2} \\______/ \\_____/ + EOF + ;; + + ([Oo]pen[Ss][Uu][Ss][Ee]*|[Oo]pen*SUSE*|SUSE*|suse*) + read_ascii 2 <<-EOF + ${c2} _______ + ${c2}__| __ \\ + ${c2} / .\\ \\ + ${c2} \\__/ | + ${c2} _______| + ${c2} \\_______ + ${c2}__________/ + EOF + ;; + + ([Oo]pen[Ww]rt*) + read_ascii 1 <<-EOF + ${c1} _______ + ${c1}| |.-----.-----.-----. + ${c1}| - || _ | -__| | + ${c1}|_______|| __|_____|__|__| + ${c1} ________|__| __ + ${c1}| | | |.----.| |_ + ${c1}| | | || _|| _| + ${c1}|________||__| |____| + EOF + ;; + + ([Pp]arabola*) + read_ascii 5 <<-EOF + ${c5} __ __ __ _ + ${c5}.\`_//_//_/ / \`. + ${c5} / .\` + ${c5} / .\` + ${c5} /.\` + ${c5} /\` + EOF + ;; + + ([Pp]op!_[Oo][Ss]*) + read_ascii 6 <<-EOF + ${c6}______ + ${c6}\\ _ \\ __ + ${c6}\\ \\ \\ \\ / / + ${c6}\\ \\_\\ \\ / / + ${c6}\\ ___\\ /_/ + ${c6} \\ \\ _ + ${c6} __\\_\\__(_)_ + ${c6}(___________) + EOF + ;; + + ([Pp]ure[Oo][Ss]*) + read_ascii <<-EOF + ${c7} _____________ + ${c7}| _________ | + ${c7}| | | | + ${c7}| | | | + ${c7}| |_________| | + ${c7}|_____________| + EOF + ;; + + ([Rr]aspbian*) + read_ascii 1 <<-EOF + ${c2} __ __ + ${c2} (_\\)(/_) + ${c1} (_(__)_) + ${c1}(_(_)(_)_) + ${c1} (_(__)_) + ${c1} (__) + EOF + ;; + + ([Ss]erenity[Oo][Ss]*) + read_ascii 4 <<-EOF + ${c7} _____ + ${c1} ,-${c7} -, + ${c1} ;${c7} ( ; + ${c1}| ${c7}. \_${c1}.,${c7} | + ${c1}| ${c7}o _${c1} ',${c7} | + ${c1} ; ${c7}(_)${c1} )${c7} ; + ${c1} '-_____-${c7}' + EOF + ;; + + ([Ss]lackware*) + read_ascii 4 <<-EOF + ${c4} ________ + ${c4} / ______| + ${c4} | |______ + ${c4} \\______ \\ + ${c4} ______| | + ${c4}| |________/ + ${c4}|____________ + EOF + ;; + + ([Ss]olus*) + read_ascii 4 <<-EOF + ${c6} + ${c6} /| + ${c6} / |\\ + ${c6} / | \\ _ + ${c6} /___|__\\_\\ + ${c6} \\ / + ${c6} \`-------´ + EOF + ;; + + ([Ss]un[Oo][Ss]|[Ss]olaris*) + read_ascii 3 <<-EOF + ${c3} . .; . + ${c3} . :; :: ;: . + ${c3} .;. .. .. .;. + ${c3}.. .. .. .. + ${c3} .;, ,;. + EOF + ;; + + ([Uu]buntu*) + read_ascii 3 <<-EOF + ${c3} _ + ${c3} ---(_) + ${c3} _/ --- \\ + ${c3}(_) | | + ${c3} \\ --- _/ + ${c3} ---(_) + EOF + ;; + + ([Vv]oid*) + read_ascii 2 <<-EOF + ${c2} _______ + ${c2} _ \\______ - + ${c2}| \\ ___ \\ | + ${c2}| | / \ | | + ${c2}| | \___/ | | + ${c2}| \\______ \\_| + ${c2} -_______\\ + EOF + ;; + + ([Xx]eonix*) + read_ascii 2 <<-EOF + ${c2} ___ ___ + ${c2}___ \ \/ / ___ + ${c2}\ \ \ / / / + ${c2} \ \/ \/ / + ${c2} \ /\ / + ${c2} \__/ \__/ + EOF + ;; + + (*) + # On no match of a distribution ascii art, this function calls + # itself again, this time to look for a more generic OS related + # ascii art (KISS Linux -> Linux). + [ "$1" ] || { + get_ascii "$os" + return + } + + printf 'error: %s is not currently supported.\n' "$os" >&6 + printf 'error: Open an issue for support to be added.\n' >&6 + exit 1 + ;; + esac + + # Store the "width" (longest line) and "height" (number of lines) + # of the ascii art for positioning. This script prints to the screen + # *almost* like a TUI does. It uses escape sequences to allow dynamic + # printing of the information through user configuration. + # + # Iterate over each line of the ascii art to retrieve the above + # information. The 'sed' is used to strip '\033[3Xm' color codes from + # the ascii art so they don't affect the width variable. + while read -r line; do + ascii_height=$((${ascii_height:-0} + 1)) + + # This was a ternary operation but they aren't supported in + # Minix's shell. + [ "${#line}" -gt "${ascii_width:-0}" ] && + ascii_width=${#line} + + # Using '<<-EOF' is the only way to loop over a command's + # output without the use of a pipe ('|'). + # This ensures that any variables defined in the while loop + # are still accessible in the script. + done <<-EOF + $(printf %s "$ascii" | sed 's/\[3.m//g') + EOF + + # Add a gap between the ascii art and the information. + ascii_width=$((ascii_width + 4)) + + # Print the ascii art and position the cursor back where we + # started prior to printing it. + { + esc_p SGR 1 + printf '%s' "$ascii" + esc_p SGR 0 + esc_p CUU "$ascii_height" + } >&6 +} + +main() { + case $* in + -v) + printf '%s 0.7.0\n' "${0##*/}" + return 0 + ;; + + -d) + # Below exec is not run, stderr is shown. + ;; + + '') + exec 2>/dev/null + ;; + + *) + cat <<EOF +${0##*/} show system information +${0##*/} -d show stderr (debug mode) +${0##*/} -v show version information +EOF + return 0 + ;; + esac + + # Hide 'stdout' and selectively print to it using '>&6'. + # This gives full control over what it displayed on the screen. + exec 6>&1 >/dev/null + + # Store raw escape sequence character for later reuse. + esc_c=$(printf '\033') + + # Allow the user to execute their own script and modify or + # extend pfetch's behavior. + # shellcheck source=/dev/null + ! [ -f "$PF_SOURCE" ] || . "$PF_SOURCE" + + # Ensure that the 'TMPDIR' is writable as heredocs use it and + # fail without the write permission. This was found to be the + # case on Android where the temporary directory requires root. + [ -w "${TMPDIR:-/tmp}" ] || export TMPDIR=~ + + # Generic color list. + # Disable warning about unused variables. + # shellcheck disable=2034 + for _c in c1 c2 c3 c4 c5 c6 c7 c8; do + esc SGR "3${_c#?}" 0 + export "$_c=$e" + done + + # Disable line wrapping and catch the EXIT signal to enable it again + # on exit. Ideally you'd somehow query the current value and retain + # it but I'm yet to see this irk anyone. + esc_p DECAWM l >&6 + trap 'esc_p DECAWM h >&6' EXIT + + # Store the output of 'uname' to avoid calling it multiple times + # throughout the script. 'read <<EOF' is the simplest way of reading + # a command into a list of variables. + read -r os kernel arch <<-EOF + $(uname -srm) + EOF + + # Always run 'get_os' for the purposes of detecting which ascii + # art to display. + get_os + + # Allow the user to specify the order and inclusion of information + # functions through the 'PF_INFO' environment variable. + # shellcheck disable=2086 + { + # Disable globbing and set the positional parameters to the + # contents of 'PF_INFO'. + set -f + set +f -- ${PF_INFO-ascii title os host kernel uptime pkgs memory} + + # Iterate over the info functions to determine the lengths of the + # "info names" for output alignment. The option names and subtitles + # match 1:1 so this is thankfully simple. + for info do + command -v "get_$info" >/dev/null || continue + + # This was a ternary operation but they aren't supported in + # Minix's shell. + [ "${#info}" -gt "${info_length:-0}" ] && + info_length=${#info} + done + + # Add an additional space of length to act as a gap. + info_length=$((info_length + 1)) + + # Iterate over the above list and run any existing "get_" functions. + for info do + "get_$info" + done + } + + # Position the cursor below both the ascii art and information lines + # according to the height of both. If the information exceeds the ascii + # art in height, don't touch the cursor (0/unset), else move it down + # N lines. + # + # This was a ternary operation but they aren't supported in Minix's shell. + [ "${info_height:-0}" -lt "${ascii_height:-0}" ] && + cursor_pos=$((ascii_height - info_height)) + + # Print '$cursor_pos' amount of newlines to correctly position the + # cursor. This used to be a 'printf $(seq X X)' however 'seq' is only + # typically available (by default) on GNU based systems! + while [ "${i:=0}" -le "${cursor_pos:-0}" ]; do + printf '\n' + i=$((i + 1)) + done >&6 +} + +main "$@" |