/
helpers.sh
1307 lines (1174 loc) · 43 KB
/
helpers.sh
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#!/bin/bash
# This file is part of The RetroPie Project
#
# The RetroPie Project is the legal property of its developers, whose names are
# too numerous to list here. Please refer to the COPYRIGHT.md file distributed with this source.
#
# See the LICENSE.md file at the top-level directory of this distribution and
# at https://raw.githubusercontent.com/RetroPie/RetroPie-Setup/master/LICENSE.md
#
## @file helpers.sh
## @brief RetroPie helpers library
## @copyright GPLv3
## @fn printMsgs()
## @param type style of display to use - dialog, console or heading
## @param message string or array of messages to display
## @brief Prints messages in a variety of ways.
function printMsgs() {
local type="$1"
shift
if [[ "$__nodialog" == "1" && "$type" == "dialog" ]]; then
type="console"
fi
for msg in "$@"; do
[[ "$type" == "dialog" ]] && dialog --backtitle "$__backtitle" --cr-wrap --no-collapse --msgbox "$msg" 20 60 >/dev/tty
[[ "$type" == "console" ]] && echo -e "$msg"
[[ "$type" == "heading" ]] && echo -e "\n= = = = = = = = = = = = = = = = = = = = =\n$msg\n= = = = = = = = = = = = = = = = = = = = =\n"
done
}
## @fn printHeading()
## @param message string or array of messages to display
## @brief Calls PrintMsgs with "heading" type.
function printHeading() {
printMsgs "heading" "$@"
}
## @fn fatalError()
## @param message string or array of messages to display
## @brief Calls PrintMsgs with "heading" type, and exits immediately.
function fatalError() {
printHeading "Error"
echo -e "$1"
exit 1
}
# @fn fnExists()
# @param name name of function to check for
# @brief Checks if function name exists.
# @retval 0 if the function name exists
# @retval 1 if the function name does not exist
function fnExists() {
declare -f "$1" > /dev/null
return $?
}
function ask() {
echo -e -n "$@" '[y/n] ' ; read ans
case "$ans" in
y*|Y*) return 0 ;;
*) return 1 ;;
esac
}
## @fn runCmd()
## @param command command to run
## @brief Calls command and record any non zero return codes for later printing.
## @return whatever the command returns.
function runCmd() {
local ret
"$@"
ret=$?
if [[ "$ret" -ne 0 ]]; then
md_ret_errors+=("Error running '$*' - returned $ret")
fi
return $ret
}
## @fn hasFlag()
## @param string string to search in
## @param flag flag to search for
## @brief Checks for a flag in a string (consisting of space separated flags).
## @retval 0 if the flag was found
## @retval 1 if the flag was not found
function hasFlag() {
local string="$1"
local flag="$2"
[[ -z "$string" || -z "$flag" ]] && return 1
if [[ "$string" =~ (^| )$flag($| ) ]]; then
return 0
else
return 1
fi
}
## @fn isPlatform()
## @param platform
## @brief Test for current platform / platform flags.
function isPlatform() {
local flag="$1"
if hasFlag "$__platform $__platform_flags" "$flag"; then
return 0
fi
return 1
}
## @fn addLineToFile()
## @param line line to add
## @param file file to add line to
## @brief Adds a new line of text to a file.
function addLineToFile() {
if [[ -f "$2" ]]; then
cp -p "$2" "$2.bak"
else
sed -i --follow-symlinks '$a\' "$2"
fi
echo "$1" >> "$2"
}
## @fn editFile()
## @param file file to edit
## @brief Opens an editing dialog for specified file.
function editFile() {
local file="$1"
local cmd=(dialog --backtitle "$__backtitle" --editbox "$file" 22 76)
local choice=$("${cmd[@]}" 2>&1 >/dev/tty)
[[ -n "$choice" ]] && echo "$choice" >"$file"
}
## @fn hasPackage()
## @param package name of Debian package
## @param version requested version (optional)
## @param comparison type of comparison - defaults to `ge` (greater than or equal) if a version parameter is provided.
## @brief Test for an installed Debian package / package version.
## @retval 0 if the requested package / version was installed
## @retval 1 if the requested package / version was not installed
function hasPackage() {
local pkg="$1"
local req_ver="$2"
local comp="$3"
[[ -z "$comp" ]] && comp="ge"
local status=$(dpkg-query -W --showformat='${Status} ${Version}' $1 2>/dev/null)
if [[ $? -eq 0 ]]; then
local ver="${status##* }"
local status="${status% *}"
# if status doesn't contain "ok installed" package is not installed
if [[ "$status" == *"ok installed" ]]; then
# if we didn't request a version number, be happy with any
[[ -z "$req_ver" ]] && return 0
compareVersions "$ver" "$comp" "$req_ver" && return 0
fi
fi
return 1
}
## @fn aptUpdate()
## @brief Calls apt-get update (if it has not been called before).
function aptUpdate() {
if [[ "$__apt_update" != "1" ]]; then
apt-get update
__apt_update="1"
fi
}
## @fn aptInstall()
## @param packages package / space separated list of packages to install
## @brief Calls apt-get install with the packages provided.
function aptInstall() {
aptUpdate
apt-get install -y "$@"
return $?
}
## @fn aptRemove()
## @param packages package / space separated list of packages to install
## @brief Calls apt-get remove with the packages provided.
function aptRemove() {
aptUpdate
apt-get remove -y "$@"
return $?
}
## @fn getDepends()
## @param packages package / space separated list of packages to install
## @brief Installs packages if they are not installed.
## @retval 0 on success
## @retval 1 on failure
function getDepends() {
local required
local packages=()
local failed=()
# check whether to use our own sdl2 - can be disabled to resolve issues with
# mixing custom 64bit sdl2 and os distributed i386 version on multiarch
local own_sdl2=1
iniConfig " = " '"' "$configdir/all/retropie.cfg"
iniGet "own_sdl2"
[[ "$ini_value" == "0" ]] && own_sdl2=0
for required in $@; do
# workaround for different package names on osmc / xbian
if [[ "$required" == "libraspberrypi-bin" ]]; then
isPlatform "osmc" && required="rbp-userland-osmc"
isPlatform "xbian" && required="xbian-package-firmware"
fi
if [[ "$required" == "libraspberrypi-dev" ]]; then
isPlatform "osmc" && required="rbp-userland-dev-osmc"
isPlatform "xbian" && required="xbian-package-firmware"
fi
# map libpng12-dev to libpng-dev for Ubuntu 16.10+
if [[ "$required" == "libpng12-dev" ]] && compareVersions "$__os_debian_ver" ge 9; then
required="libpng-dev"
fi
if [[ "$md_mode" == "install" ]]; then
# make sure we have our sdl1 / sdl2 installed
if ! isPlatform "x11" && [[ "$required" == "libsdl1.2-dev" ]] && hasPackage libsdl1.2-dev $(get_pkg_ver_sdl1) "ne"; then
packages+=("$required")
continue
fi
if [[ "$own_sdl2" -eq 1 && "$required" == "libsdl2-dev" ]] && hasPackage libsdl2-dev $(get_pkg_ver_sdl2) "ne"; then
packages+=("$required")
continue
fi
# make sure libraspberrypi-dev/libraspberrypi0 is up to date.
if [[ "$required" == "libraspberrypi-dev" ]] && hasPackage libraspberrypi-dev 1.20170703-1 "lt"; then
packages+=("$required")
continue
fi
fi
if [[ "$md_mode" == "remove" ]]; then
hasPackage "$required" && packages+=("$required")
else
hasPackage "$required" || packages+=("$required")
fi
done
if [[ ${#packages[@]} -ne 0 ]]; then
if [[ "$md_mode" == "remove" ]]; then
apt-get remove --purge -y "${packages[@]}"
apt-get autoremove --purge -y
return 0
fi
echo "Did not find needed package(s): ${packages[@]}. I am trying to install them now."
# workaround to force installation of our fixed libsdl1.2 and custom compiled libsdl2
local temp=()
for required in ${packages[@]}; do
if isPlatform "rpi" && [[ "$required" == "libsdl1.2-dev" ]]; then
if [[ "$__has_binaries" -eq 1 ]]; then
rp_callModule sdl1 install_bin
else
rp_callModule sdl1
fi
elif [[ "$required" == "libsdl2-dev" && "$own_sdl2" == "1" ]]; then
if [[ "$__has_binaries" -eq 1 ]]; then
rp_callModule sdl2 install_bin
else
rp_callModule sdl2
fi
else
temp+=("$required")
fi
done
packages=("${temp[@]}")
aptInstall --no-install-recommends "${packages[@]}"
# check the required packages again rather than return code of apt-get,
# as apt-get might fail for other reasons (eg other half installed packages)
for required in ${packages[@]}; do
if ! hasPackage "$required"; then
# workaround for installing samba in a chroot (fails due to failed smbd service restart)
# we replace the init.d script with an empty script so the install completes
if [[ "$required" == "samba" && "$__chroot" -eq 1 ]]; then
mv /etc/init.d/smbd /etc/init.d/smbd.old
echo "#!/bin/sh" >/etc/init.d/smbd
chmod u+x /etc/init.d/smbd
apt-get -f install
mv /etc/init.d/smbd.old /etc/init.d/smbd
else
failed+=("$required")
fi
fi
done
if [[ ${#failed[@]} -eq 0 ]]; then
printMsgs "console" "Successfully installed package(s): ${packages[*]}."
else
md_ret_errors+=("Could not install package(s): ${failed[*]}.")
return 1
fi
fi
return 0
}
## @fn rpSwap()
## @param command *on* to add swap if needed and *off* to remove later
## @param memory total memory needed (swap added = memory needed - available memory)
## @brief Adds additional swap to the system if needed.
function rpSwap() {
local command=$1
local swapfile="$__swapdir/swap"
case $command in
on)
rpSwap off
local memory=$(free -t -m | awk '/^Total:/{print $2}')
local needed=$2
local size=$((needed - memory))
mkdir -p "$__swapdir/"
if [[ $size -ge 0 ]]; then
echo "Adding $size MB of additional swap"
fallocate -l ${size}M "$swapfile"
chmod 600 "$swapfile"
mkswap "$swapfile"
swapon "$swapfile"
fi
;;
off)
echo "Removing additional swap"
swapoff "$swapfile" 2>/dev/null
rm -f "$swapfile"
;;
esac
}
## @fn gitPullOrClone()
## @param dest destination directory
## @param repo repository to clone or pull from
## @param branch branch to clone or pull from (optional)
## @param commit specific commit to checkout (optional - requires branch to be set)
## @brief Git clones or pulls a repository.
function gitPullOrClone() {
local dir="$1"
local repo="$2"
local branch="$3"
[[ -z "$branch" ]] && branch="master"
local commit="$4"
if [[ -d "$dir/.git" ]]; then
pushd "$dir" > /dev/null
runCmd git pull
runCmd git submodule update --init --recursive
popd > /dev/null
else
local git="git clone --recursive"
if [[ "$__persistent_repos" -ne 1 && "$repo" == *github* && -z "$commit" ]]; then
git+=" --depth 1"
fi
[[ "$branch" != "master" ]] && git+=" --branch $branch"
echo "$git \"$repo\" \"$dir\""
runCmd $git "$repo" "$dir"
fi
if [[ "$commit" ]]; then
echo "Winding back $repo->$branch to commit: #$commit"
runCmd git -C "$dir" checkout $commit
fi
}
# @fn setupDirectories()
# @brief Makes sure some required retropie directories and files are created.
function setupDirectories() {
mkdir -p "$rootdir"
mkUserDir "$datadir"
mkUserDir "$romdir"
mkUserDir "$biosdir"
mkUserDir "$configdir"
mkUserDir "$configdir/all"
# make sure we have inifuncs.sh in place and that it is up to date
mkdir -p "$rootdir/lib"
local helper_libs=(inifuncs.sh archivefuncs.sh)
for helper in "${helper_libs[@]}"; do
if [[ ! -f "$rootdir/lib/$helper" || "$rootdir/lib/$helper" -ot "$scriptdir/scriptmodules/$helper" ]]; then
cp --preserve=timestamps "$scriptdir/scriptmodules/$helper" "$rootdir/lib/$helper"
fi
done
# create template for autoconf.cfg and make sure it is owned by $user
local config="$configdir/all/autoconf.cfg"
if [[ ! -f "$config" ]]; then
echo "# this file can be used to enable/disable retropie autoconfiguration features" >"$config"
fi
chown $user:$user "$config"
}
## @fn rmDirExists()
## @param dir directory to remove
## @brief Removes a directory and all contents if it exists.
function rmDirExists() {
if [[ -d "$1" ]]; then
rm -rf "$1"
fi
}
## @fn mkUserDir()
## @param dir directory to create
## @brief Creates a directory owned by the current user.
function mkUserDir() {
mkdir -p "$1"
chown $user:$user "$1"
}
## @fn mkRomDir()
## @param dir rom directory to create
## @brief Creates a directory under $romdir owned by the current user.
function mkRomDir() {
mkUserDir "$romdir/$1"
if [[ "$1" == "megadrive" ]]; then
pushd "$romdir"
ln -snf "$1" "genesis"
popd
fi
}
## @fn moveConfigDir()
## @param from source directory
## @param to destination directory
## @brief Moves the contents of a folder and symlinks to the new location.
function moveConfigDir() {
local from="$1"
local to="$2"
# if we are in remove mode - remove the symlink
if [[ "$md_mode" == "remove" ]]; then
[[ -h "$from" ]] && rm -f "$from"
return
fi
mkUserDir "$to"
# move any old configs to the new location
if [[ -d "$from" && ! -h "$from" ]]; then
cp -a "$from/." "$to/"
rm -rf "$from"
fi
ln -snf "$to" "$from"
# set ownership of the actual link to $user
chown -h $user:$user "$from"
}
## @fn moveConfigFile()
## @param from source file
## @param to destination file
## @brief Moves the file and symlinks to the new location.
function moveConfigFile() {
local from="$1"
local to="$2"
# if we are in remove mode - remove the symlink
if [[ "$md_mode" == "remove" && -h "$from" ]]; then
rm -f "$from"
return
fi
# move old file
if [[ -f "$from" && ! -h "$from" ]]; then
mv "$from" "$to"
fi
ln -sf "$to" "$from"
# set ownership of the actual link to $user
chown -h $user:$user "$from"
}
## @fn diffFiles()
## @param file1 file to compare
## @param file2 file to compare
## @brief Compares two files using diff.
## @retval 0 if the files were the same
## @retval 1 if they were not
## @retval >1 an error occurred
function diffFiles() {
diff -q "$1" "$2" >/dev/null
return $?
}
## @fn compareVersions()
## @param version first version to compare
## @param operator operator to use (lt le eq ne ge gt)
## @brief version second version to compare
## @retval 0 if the comparison was true
## @retval 1 if the comparison was false
function compareVersions() {
dpkg --compare-versions "$1" "$2" "$3" >/dev/null
return $?
}
## @fn dirIsEmpty()
## @param path path to directory
## @param files_only set to 1 to ignore sub directories
## @retval 0 if the directory is empty
## @retval 1 if the directory is not empty
function dirIsEmpty() {
if [[ "$2" -eq 1 ]]; then
[[ -z "$(ls -lA1 "$1" | grep "^-")" ]] && return 0
else
[[ -z "$(ls -A "$1")" ]] && return 0
fi
return 1
}
## @fn copyDefaultConfig()
## @param from source file
## @param to destination file
## @brief Copies a default configuration.
## @details Copies from the source file to the destination file if the destination
## file doesn't exist. If the destination is the same nothing is done. If different
## the source is copied to `$destination.rp-dist`.
function copyDefaultConfig() {
local from="$1"
local to="$2"
# if the destination exists, and is different then copy the config as name.rp-dist
if [[ -f "$to" ]]; then
if ! diffFiles "$from" "$to"; then
to+=".rp-dist"
printMsgs "console" "Copying new default configuration to $to"
cp "$from" "$to"
fi
else
printMsgs "console" "Copying default configuration to $to"
cp "$from" "$to"
fi
chown $user:$user "$to"
}
## @fn renameModule()
## @param from source file
## @param to destination file
## @brief Renames an existing module.
## @details Renames an existing module, moving it's install folder to the new location
## and changing any references to it in `emulators.cfg`.
function renameModule() {
local from="$1"
local to="$2"
# move from old location and update emulators.cfg
if [[ -d "$rootdir/$md_type/$from" ]]; then
rm -rf "$rootdir/$md_type/$to"
mv "$rootdir/$md_type/$from" "$rootdir/$md_type/$to"
# replace any default = "$from"
sed -i --follow-symlinks "s/\"$from\"/\"$to\"/g" "$configdir"/*/emulators.cfg
# replace any $from = "cmdline"
sed -i --follow-symlinks "s/^$from\([ =]\)/$to\1/g" "$configdir"/*/emulators.cfg
# replace any paths with /$from/
sed -i --follow-symlinks "s|/$from/|/$to/|g" "$configdir"/*/emulators.cfg
fi
}
## @fn addUdevInputRules()
## @brief Creates a udev rule to adjust input device permissions.
## @details Creates a udev rule in `/etc/udev/rules.d/99-input.rules` to
## make everything in `/dev/input` it writable by any user in group `input`.
function addUdevInputRules() {
if [[ ! -f /etc/udev/rules.d/99-input.rules ]]; then
echo 'SUBSYSTEM=="input", GROUP="input", MODE="0660"' > /etc/udev/rules.d/99-input.rules
fi
# remove old 99-evdev.rules
rm -f /etc/udev/rules.d/99-evdev.rules
}
## @fn setDispmanx()
## @param module_id name of module to add dispmanx flag for
## @param status initial status of flag (0 or 1)
## @brief Sets a dispmanx flag for a module.
## @details Set a dispmanx flag for a module as to whether it should use the
## sdl1 dispmanx backend by default or not (0 for framebuffer, 1 for dispmanx).
function setDispmanx() {
isPlatform "rpi" || return
local mod_id="$1"
local status="$2"
iniConfig "=" "\"" "$configdir/all/dispmanx.cfg"
iniSet $mod_id "$status"
chown $user:$user "$configdir/all/dispmanx.cfg"
}
## @fn iniFileEditor()
## @param delim ini file delimiter eg. ' = '
## @param quote ini file quoting character eg. '"'
## @param config ini file to edit
## @brief Allows editing of ini files with a user friendly dialog based gui.
## @details Some arrays need to be configured before calling this, which are
## used to display what can be edited and the options available.
##
## The first array is `$ini_titles` which provides the titles for each
## entry..
##
## The second array is `$ini_descs` which contains a help description for each
## entry.
##
## The third array is `$ini_options` which contains multiple space separated
## strings in each element to control how each entry should be managed.
##
## The `$ini_options` array is constructed as follows:
##
## If the first string is `_function_` then the next string should be a function
## name that will handle that entry. The function will be called with a parameter
## `get` or `set`. The function should return the value for get via `echo`
## and should handle any gui functionality when called with `set`. This can be
## used for example to build custom dialogs.
##
## If the first option is anything else, it is assumed to be a key name, followed
## by a control type and a list of parameters.
##
## Control types are:
## * `_id_` map the following values to an id
## * `_string_` allow the value to be inputted by the user
## * `_file_` select from a list of files. The following values are wildcard,
## then file path.
##
## If none of the above, then the rest of the array element should be a list of
## possible values for the key.
##
## Some examples for ini_options:
##
## ini_options=('video_smooth true false')
## Allow setting of the key `video_smooth` with the values of *true* or *false*
##
## ini_options=('aspect_ratio_index _id_ 4:3 16:9 16:10)
## Allow setting of the key `aspect_ratio_index` with the values 0 1 or 2 which
## correspond to the ratios. The user is shown the ratios, but the ini configuration
## is set to the id (4:3 = 0, 16:9 = 1, 16:10 = 2).
##
## ini_options=('_function_ _video_fullscreen_configedit')
## The function `_video_fullscreen_configedit` is called with *get* or *set*
## to manage this entry.
##
## ini_options=("video_shader _file_ *.*p $rootdir/emulators/retroarch/shader")
## The key `video_shader` will be able to be set to a list of files in
## `$rootdir/emulators/retroarch/shader` that match the wildcard `*.*p`
##
## For more examples you can check out the code in supplementary/configedit.sh
function iniFileEditor() {
local delim="$1"
local quote="$2"
local config="$3"
[[ ! -f "$config" ]] && return
iniConfig "$delim" "$quote" "$config"
local sel
local value
local option
local title
while true; do
local options=()
local params=()
local values=()
local keys=()
local i=0
# generate menu from options
for option in "${ini_options[@]}"; do
# split into new array (globbing safe)
read -ra option <<<"$option"
key="${option[0]}"
keys+=("$key")
params+=("${option[*]:1}")
# if the first parameter is _function_ we call the second parameter as a function
# so we can handle some options with a custom menu etc
if [[ "$key" == "_function_" ]]; then
value="$(${option[1]} get)"
else
# get current value
iniGet "$key"
if [[ -n "$ini_value" ]]; then
value="$ini_value"
else
value="unset"
fi
fi
values+=("$value")
# add the matching value to our id in _id_ lists
if [[ "${option[1]}" == "_id_" && "$value" != "unset" ]]; then
value+=" - ${option[value+2]}"
fi
# use custom title if provided
if [[ -n "${ini_titles[i]}" ]]; then
title="${ini_titles[i]}"
else
title="$key"
fi
options+=("$i" "$title ($value)" "${ini_descs[i]}")
((i++))
done
local cmd=(dialog --backtitle "$__backtitle" --default-item "$sel" --item-help --help-button --menu "Please choose the setting to modify in $config" 22 76 16)
sel=$("${cmd[@]}" "${options[@]}" 2>&1 >/dev/tty)
if [[ "${sel[@]:0:4}" == "HELP" ]]; then
printMsgs "dialog" "${sel[@]:5}"
continue
fi
[[ -z "$sel" ]] && break
# if the key is _function_ we handle the option with a custom function
if [[ "${keys[sel]}" == "_function_" ]]; then
"${params[sel]}" set "${values[sel]}"
continue
fi
# process the editing of the option
i=0
options=("U" "unset")
local default=""
# split into new array (globbing safe)
read -ra params <<<"${params[sel]}"
local mode="${params[0]}"
case "$mode" in
_string_)
options+=("E" "Edit (Currently ${values[sel]})")
;;
_file_)
local match="${params[1]}"
local path="${params[*]:2}"
local file
while read file; do
[[ "${values[sel]}" == "$file" ]] && default="$i"
file="${file//$path\//}"
options+=("$i" "$file")
((i++))
done < <(find -L "$path" -type f -name "$match" | sort)
;;
_id_|*)
[[ "$mode" == "_id_" ]] && params=("${params[@]:1}")
for option in "${params[@]}"; do
if [[ "$mode" == "_id_" ]]; then
[[ "${values[sel]}" == "$i" ]] && default="$i"
else
[[ "${values[sel]}" == "$option" ]] && default="$i"
fi
options+=("$i" "$option")
((i++))
done
;;
esac
[[ -z "$default" ]] && default="U"
# display values
cmd=(dialog --backtitle "$__backtitle" --default-item "$default" --menu "Please choose the value for ${keys[sel]}" 22 76 16)
local choice=$("${cmd[@]}" "${options[@]}" 2>&1 >/dev/tty)
# if it is a _string_ type we will open an inputbox dialog to get a manual value
if [[ -z "$choice" ]]; then
continue
elif [[ "$choice" == "E" ]]; then
[[ "${values[sel]}" == "unset" ]] && values[sel]=""
cmd=(dialog --backtitle "$__backtitle" --inputbox "Please enter the value for ${keys[sel]}" 10 60 "${values[sel]}")
value=$("${cmd[@]}" 2>&1 >/dev/tty)
elif [[ "$choice" == "U" ]]; then
value=""
else
if [[ "$mode" == "_id_" ]]; then
value="$choice"
else
# get the actual value from the options array
local index=$((choice*2+3))
if [[ "$mode" == "_file_" ]]; then
value="$path/${options[index]}"
else
value="${options[index]}"
fi
fi
fi
if [[ "$choice" == "U" ]]; then
iniUnset "${keys[sel]}" "$value"
else
iniSet "${keys[sel]}" "$value"
fi
done
}
## @fn setESSystem()
## @param fullname full name of system
## @param name short name of system
## @param path rom path
## @param extension file extensions to show
## @param command command to run
## @param platform name of platform (used by es for scraping)
## @param theme name of theme to use
## @brief Adds a system entry for Emulation Station (to /etc/emulationstation/es_systems.cfg).
function setESSystem() {
local function
for function in $(compgen -A function _add_system_); do
"$function" "$@"
done
}
## @fn ensureSystemretroconfig()
## @param system system to create retroarch.cfg for
## @param shader set a default shader to use (deprecated)
## @brief Creates a default retroarch.cfg for specified system in `/opt/retropie/configs/$system/retroarch.cfg`.
function ensureSystemretroconfig() {
local system="$1"
local shader="$2"
if [[ ! -d "$configdir/$system" ]]; then
mkUserDir "$configdir/$system"
fi
local config="$(mktemp)"
# add the initial comment regarding include order
echo -e "# Settings made here will only override settings in the global retroarch.cfg if placed above the #include line\n" >"$config"
# add the per system default settings
iniConfig " = " '"' "$config"
iniSet "input_remapping_directory" "$configdir/$system/"
if [[ -n "$shader" ]]; then
iniUnset "video_smooth" "false"
iniSet "video_shader" "$emudir/retroarch/shader/$shader"
iniUnset "video_shader_enable" "true"
fi
# include the main retroarch config
echo -e "\n#include \"$configdir/all/retroarch.cfg\"" >>"$config"
copyDefaultConfig "$config" "$configdir/$system/retroarch.cfg"
rm "$config"
}
## @fn setRetroArchCoreOption()
## @param option option to set
## @param value value to set
## @brief Sets a retroarch core option in `$configdir/all/retroarch-core-options.cfg`.
function setRetroArchCoreOption() {
local option="$1"
local value="$2"
iniConfig " = " "\"" "$configdir/all/retroarch-core-options.cfg"
iniGet "$option"
if [[ -z "$ini_value" ]]; then
iniSet "$option" "$value"
fi
chown $user:$user "$configdir/all/retroarch-core-options.cfg"
}
## @fn setConfigRoot()
## @param dir directory under $configdir to use
## @brief Sets module config root `$md_conf_root` to subfolder from `$configdir`
## @details This is used for ports that are not actually in scriptmodules/ports
## as they would get the wrong config root otherwise.
function setConfigRoot() {
local dir="$1"
md_conf_root="$configdir"
[[ -n "$dir" ]] && md_conf_root+="/$dir"
mkUserDir "$md_conf_root"
}
## @fn loadModuleConfig()
## @param params space separated list of key=value parameters
## @brief Load the settings for a module.
## @details This allows modules to quickly load some settings from an ini file.
## It can provide a shortcut way to load a set of keys from an ini file into
## variables.
##
## It requires iniConfig to be called first to specify the format and file.
## eg.
##
## iniConfig " = " '"' "$configdir/all/mymodule.cfg"
## eval $(loadModuleConfig \
## 'some_option=1' \
## 'another_option=2'
##
## This would load the keys `some_option` and `another_option` into local
## variables `some_option` and `another_option`. If the keys did not exist
## in mymodule.cfg the variables would be initialised to 1 and 2.
function loadModuleConfig() {
local options=("$@")
local option
local key
local value
for option in "${options[@]}"; do
option=(${option/=/ })
key="${option[0]}"
value="${option[@]:1}"
iniGet "$key"
if [[ -z "$ini_value" ]]; then
iniSet "$key" "$value"
echo "local $key=\"$value\""
else
echo "local $key=\"$ini_value\""
fi
done
}
## @fn applyPatch()
## @param patch filename of patch to apply
## @brief Apply a patch if it has not already been applied to current folder.
## @details This is used for applying patches against upstream code.
## @retval 0 on success
## @retval 1 on failure
function applyPatch() {
local patch="$1"
local patch_applied="${patch##*/}.applied"
if [[ ! -f "$patch_applied" ]]; then
if patch -f -p1 <"$patch"; then
touch "$patch_applied"
printMsgs "console" "Successfully applied patch: $patch"
else
md_ret_errors+=("$md_id patch $patch failed to apply")
return 1
fi
fi
return 0
}
## @fn downloadAndExtract()
## @param url url of archive
## @param dest destination folder for the archive
## @param opts number of leading components from file to strip off or unzip params
## @brief Download and extract an archive
## @details Download and extract an archive, optionally stripping off a number
## of directories - equivalent to the tar `--strip-components parameter`. For
## zip files, the strip parameter can contain additional options to send to unzip
## @retval 0 on success
function downloadAndExtract() {
local url="$1"
local dest="$2"
local opts="$3"
local ext="${url##*.}"
local cmd=(tar -xv)
local is_tar=1
local ret
case "$ext" in
gz|tgz)
cmd+=(-z)
;;
bz2)
cmd+=(-j)
;;
xz)
cmd+=(-J)
;;
exe|zip)
is_tar=0
local tmp="$(mktemp -d)"
local file="${url##*/}"
runCmd wget -q -O"$tmp/$file" "$url"
runCmd unzip $opts -o "$tmp/$file" -d "$dest"
rm -rf "$tmp"
ret=$?
esac
if [[ "$is_tar" -eq 1 ]]; then
mkdir -p "$dest"
cmd+=(-C "$dest")
[[ -n "$opts" ]] && cmd+=(--strip-components "$opts")
runCmd "${cmd[@]}" < <(wget -q -O- "$url")
ret=$?
fi
return $ret
}
## @fn ensureFBMode()
## @param res_x width of mode
## @param res_y height of mode
## @brief Add a framebuffer mode to /etc/fb.modes
## @details Useful for adding specific resolutions used by emulators so SDL1 can
## use them and utilise the RPI hardware scaling. Without for example a 320x240
## mode in fb.modes many of the emulators that output to the framebuffer and
## were not set to use the dispmanx SDL1 backend would just show in a small
## area of the screen.
function ensureFBMode() {
[[ ! -f /etc/fb.modes ]] && return
local res_x="$1"
local res_y="$2"
local res="${res_x}x${res_y}"
sed -i --follow-symlinks "/$res mode/,/endmode/d" /etc/fb.modes
cat >> /etc/fb.modes <<_EOF_
# added by RetroPie-Setup - $res mode for emulators
mode "$res"
geometry $res_x $res_y $res_x $res_y 16
timings 0 0 0 0 0 0 0
endmode
_EOF_
}
## @fn joy2keyStart()
## @param left mapping for left