forked from labbots/google-drive-upload
/
install.sh
616 lines (550 loc) · 25.3 KB
/
install.sh
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#!/usr/bin/env sh
# Install, Update or Uninstall google-drive-upload
# shellcheck source=/dev/null
_usage() {
printf "%b" "
The script can be used to install google-drive-upload script in your system.\n
Usage: ${0##*/} [options.. ]\n
All flags are optional.\n
Options:\n
-p | --path <dir_name> - Custom path where you want to install script.\nDefault Path: ${HOME}/.google-drive-upload. \n
-c | --cmd <command_name> - Custom command name, after installation script will be available as the input argument.
Default upload command: gupload
-sc | --sync-cmd <command name> - Custom command name for gsync.
Default sync command: gsync\n
-r | --repo <Username/reponame> - Upload script from your custom repo,e.g --repo labbots/google-drive-upload, make sure your repo file structure is same as official repo.\n
-R | --release <tag/release_tag> - Specify tag name for the github repo, applies to custom and default repo both.\n
-b | -B | --branch <branch_name> - Specify branch name for the github repo, applies to custom and default repo both.\n
-s | --shell-rc <shell_file> - Specify custom rc file, where PATH is supposed to be appended, by default script detects .zshrc and .bashrc.\n
-t | --time 'no of days' - Specify custom auto update time ( given input will taken as number of days ) after which script will try to automatically update itself.\n
Default: 5 days\n
--skip-internet-check - Like the flag says.\n
--sh | --posix - Force install posix scripts even if system has compatible bash binary present.\n
-q | --quiet - Only show critical error/sucess logs.\n
-U | --uninstall - Uninstall the script and remove related files.\n
-D | --debug - Display script command trace.\n
-h | --help - Display usage instructions.\n"
exit 0
}
_short_help() {
printf "No valid arguments provided, use -h/--help flag to see usage.\n"
exit 0
}
###################################################
# Check if debug is enabled and enable command trace
# Arguments: None
# Result: If DEBUG
# Present - Enable command trace and change print functions to avoid spamming.
# Absent - Disable command trace
# Check QUIET, then check terminal size and enable print functions accordingly.
###################################################
_check_debug() {
_print_center_quiet() { { [ $# = 3 ] && printf "%s\n" "${2}"; } || { printf "%s%s\n" "${2}" "${3}"; }; }
if [ -n "${DEBUG}" ]; then
_print_center() { { [ $# = 3 ] && printf "%s\n" "${2}"; } || { printf "%s%s\n" "${2}" "${3}"; }; }
_clear_line() { :; } && _newline() { :; }
set -x
else
if [ -z "${QUIET}" ]; then
# check if running in terminal and support ansi escape sequences
if _support_ansi_escapes; then
if ! _required_column_size; then
_print_center() { { [ $# = 3 ] && printf "%s\n" "[ ${2} ]"; } || { printf "%s\n" "[ ${2}${3} ]"; }; }
fi
else
_print_center() { { [ $# = 3 ] && printf "%s\n" "[ ${2} ]"; } || { printf "%s\n" "[ ${2}${3} ]"; }; }
_clear_line() { :; }
fi
_newline() { printf "%b" "${1}"; }
else
_print_center() { :; } && _clear_line() { :; } && _newline() { :; }
fi
set +x
fi
}
###################################################
# Check if the required executables are installed
# Result: On
# Success - Nothing
# Error - print message and exit 1
###################################################
_check_dependencies() {
posix_check_dependencies="${1:-0}"
unset error_list warning_list
for program in curl find xargs mkdir rm grep sed sleep ps; do
command -v "${program}" 2>| /dev/null 1>&2 || error_list="${error_list}\n${program}"
done
{ ! command -v file && ! command -v mimetype; } 2>| /dev/null 1>&2 &&
error_list="${error_list}\n\"file or mimetype\""
[ "${posix_check_dependencies}" != 0 ] &&
for program in awk cat date; do
command -v "${program}" 2>| /dev/null 1>&2 || error_list="${error_list}\n${program}"
done
command -v tail 2>| /dev/null 1>&2 || warning_list="${warning_list}\ntail"
[ -n "${warning_list}" ] && {
[ -z "${UNINSTALL}" ] && {
printf "Warning: "
printf "%b, " "${error_list}"
printf "%b" "not found, sync script will be not installed/updated.\n"
}
SKIP_SYNC="true"
}
[ -n "${error_list}" ] && [ -z "${UNINSTALL}" ] && {
printf "Error: "
printf "%b, " "${error_list}"
printf "%b" "not found, install before proceeding.\n"
exit 1
}
return 0
}
###################################################
# Check internet connection.
# Probably the fastest way, takes about 1 - 2 KB of data, don't check for more than 10 secs.
# Arguments: None
# Result: On
# Success - Nothing
# Error - print message and exit 1
###################################################
_check_internet() {
_print_center "justify" "Checking Internet Connection.." "-"
if ! _timeout 10 curl -Is google.com --compressed; then
_clear_line 1
"${QUIET:-_print_center}" "justify" "Error: Internet connection" " not available." "="
exit 1
fi
_clear_line 1
}
###################################################
# Move cursor to nth no. of line and clear it to the begining.
# Arguments: 1
# ${1} = Positive integer ( line number )
# Result: Read description
###################################################
_clear_line() {
printf "\033[%sA\033[2K" "${1}"
}
###################################################
# Detect profile rc file for zsh and bash.
# Detects for login shell of the user.
# Arguments: None
# Result: On
# Success - print profile file
# Error - print error message and exit 1
###################################################
_detect_profile() {
CURRENT_SHELL="${SHELL##*/}"
case "${CURRENT_SHELL}" in
*bash*) DETECTED_PROFILE="${HOME}/.bashrc" ;;
*zsh*) DETECTED_PROFILE="${HOME}/.zshrc" ;;
*ksh*) DETECTED_PROFILE="${HOME}/.kshrc" ;;
*) DETECTED_PROFILE="${HOME}/.profile" ;;
esac
printf "%s\n" "${DETECTED_PROFILE}"
}
###################################################
# Fetch latest commit sha of release or branch
# Do not use github rest api because rate limit error occurs
# Arguments: 3
# ${1} = "branch" or "release"
# ${2} = branch name or release name
# ${3} = repo name e.g labbots/google-drive-upload
# Result: print fetched sha
###################################################
_get_latest_sha() {
unset latest_sha_get_latest_sha raw_get_latest_sha
case "${1:-${TYPE}}" in
branch)
latest_sha_get_latest_sha="$(
raw_get_latest_sha="$(curl --compressed -s https://github.com/"${3:-${REPO}}"/commits/"${2:-${TYPE_VALUE}}".atom -r 0-2000)"
_tmp="$(printf "%s\n" "${raw_get_latest_sha}" | grep -o "Commit\\/.*<" -m1 || :)" && _tmp="${_tmp##*\/}" && printf "%s\n" "${_tmp%%<*}"
)"
;;
release)
latest_sha_get_latest_sha="$(
raw_get_latest_sha="$(curl -L --compressed -s https://github.com/"${3:-${REPO}}"/releases/"${2:-${TYPE_VALUE}}")"
_tmp="$(printf "%s\n" "${raw_get_latest_sha}" | grep "=\"/""${3:-${REPO}}""/commit" -i -m1 || :)" && _tmp="${_tmp##*commit\/}" && printf "%s\n" "${_tmp%%\"*}"
)"
;;
*) : ;;
esac
printf "%b" "${latest_sha_get_latest_sha:+${latest_sha_get_latest_sha}\n}"
}
###################################################
# Print a text to center interactively and fill the rest of the line with text specified.
# This function is fine-tuned to this script functionality, so may appear unusual.
# Arguments: 4
# If ${1} = normal
# ${2} = text to print
# ${3} = symbol
# If ${1} = justify
# If remaining arguments = 2
# ${2} = text to print
# ${3} = symbol
# If remaining arguments = 3
# ${2}, ${3} = text to print
# ${4} = symbol
# Result: read description
# Reference:
# https://gist.github.com/TrinityCoder/911059c83e5f7a351b785921cf7ecda
###################################################
_print_center() {
[ $# -lt 3 ] && printf "Missing arguments\n" && return 1
term_cols_print_center="${COLUMNS:-}"
type_print_center="${1}" filler_print_center=""
case "${type_print_center}" in
normal) out_print_center="${2}" && symbol_print_center="${3}" ;;
justify)
if [ $# = 3 ]; then
input1_print_center="${2}" symbol_print_center="${3}" to_print_print_center="" out_print_center=""
to_print_print_center="$((term_cols_print_center - 5))"
{ [ "${#input1_print_center}" -gt "${to_print_print_center}" ] && out_print_center="[ $(printf "%.${to_print_print_center}s\n" "${input1_print_center}")..]"; } ||
{ out_print_center="[ ${input1_print_center} ]"; }
else
input1_print_center="${2}" input2_print_center="${3}" symbol_print_center="${4}" to_print_print_center="" temp_print_center="" out_print_center=""
to_print_print_center="$((term_cols_print_center * 47 / 100))"
{ [ "${#input1_print_center}" -gt "${to_print_print_center}" ] && temp_print_center=" $(printf "%.${to_print_print_center}s\n" "${input1_print_center}").."; } ||
{ temp_print_center=" ${input1_print_center}"; }
to_print_print_center="$((term_cols_print_center * 46 / 100))"
{ [ "${#input2_print_center}" -gt "${to_print_print_center}" ] && temp_print_center="${temp_print_center}$(printf "%.${to_print_print_center}s\n" "${input2_print_center}").. "; } ||
{ temp_print_center="${temp_print_center}${input2_print_center} "; }
out_print_center="[${temp_print_center}]"
fi
;;
*) return 1 ;;
esac
str_len_print_center="${#out_print_center}"
[ "${str_len_print_center}" -ge "$((term_cols_print_center - 1))" ] && {
printf "%s\n" "${out_print_center}" && return 0
}
filler_print_center_len="$(((term_cols_print_center - str_len_print_center) / 2))"
i_print_center=1 && while [ "${i_print_center}" -le "${filler_print_center_len}" ]; do
filler_print_center="${filler_print_center}${symbol_print_center}" && i_print_center="$((i_print_center + 1))"
done
printf "%s%s%s" "${filler_print_center}" "${out_print_center}" "${filler_print_center}"
[ "$(((term_cols_print_center - str_len_print_center) % 2))" -ne 0 ] && printf "%s" "${symbol_print_center}"
printf "\n"
return 0
}
###################################################
# fetch column size and check if greater than the num ( see in function)
# return 1 or 0
###################################################
_required_column_size() {
COLUMNS="$({ command -v bash 1>| /dev/null && bash -c 'shopt -s checkwinsize && (: && :); printf "%s\n" "${COLUMNS}" 2>&1'; } ||
{ command -v zsh 1>| /dev/null && zsh -c 'printf "%s\n" "${COLUMNS}"'; } ||
{ command -v stty 1>| /dev/null && _tmp="$(stty size)" && printf "%s\n" "${_tmp##* }"; } ||
{ command -v tput 1>| /dev/null && tput cols; })" || :
[ "$((COLUMNS))" -gt 45 ] && return 0
}
###################################################
# Check if script terminal supports ansi escapes
# Result: return 1 or 0
###################################################
_support_ansi_escapes() {
unset ansi_escapes
case "${TERM}" in
xterm* | rxvt* | urxvt* | linux* | vt* | screen*) ansi_escapes="true" ;;
*) : ;;
esac
{ [ -t 2 ] && [ -n "${ansi_escapes}" ] && return 0; } || return 1
}
###################################################
# Alternative to timeout command
# Arguments: 1 and rest
# ${1} = amount of time to sleep
# rest = command to execute
# Result: Read description
# Reference:
# https://stackoverflow.com/a/24416732
###################################################
_timeout() {
timeout_timeout="${1:?Error: Specify Timeout}" && shift
{
"${@}" &
child="${!}"
trap -- "" TERM
{
sleep "${timeout_timeout}"
kill -9 "${child}"
} &
wait "${child}"
} 2>| /dev/null 1>&2
}
###################################################
# Initialize default variables
# Arguments: None
# Result: read description
###################################################
_variables() {
REPO="labbots/google-drive-upload"
COMMAND_NAME="gupload"
SYNC_COMMAND_NAME="gsync"
INFO_PATH="${HOME}/.google-drive-upload"
INSTALL_PATH="${HOME}/.google-drive-upload/bin"
INSTALL_RC_STRING="[ -f \"\${HOME}/.google-drive-upload/bin/${COMMAND_NAME}\" ] && [ -x \"\${HOME}/.google-drive-upload/bin\" ] && PATH=\"\${HOME}/.google-drive-upload/bin:\${PATH}\""
TYPE="release"
TYPE_VALUE="latest"
SHELL_RC="$(_detect_profile)"
# If bash installation, then use bash printf else date
LAST_UPDATE_TIME="$(if [ "${INSTALLATION}" = bash ]; then
bash -c 'printf "%(%s)T\\n" "-1"'
else
date +'%s'
fi)" && export LAST_UPDATE_TIME
GLOBAL_INSTALL="false" PERM_MODE="u"
export GUPLOAD_INSTALLED_WITH="script"
[ -n "${SKIP_SYNC}" ] && SYNC_COMMAND_NAME=""
export VALUES_LIST="REPO COMMAND_NAME ${SYNC_COMMAND_NAME:+SYNC_COMMAND_NAME} INSTALL_PATH TYPE TYPE_VALUE LAST_UPDATE_TIME AUTO_UPDATE_INTERVAL INSTALLATION GLOBAL_INSTALL PERM_MODE GUPLOAD_INSTALLED_WITH"
VALUES_REGEX="" && for i in VALUES_LIST ${VALUES_LIST}; do
VALUES_REGEX="${VALUES_REGEX:+${VALUES_REGEX}|}^${i}=\".*\".* # added values"
done
return 0
}
###################################################
# Download scripts
###################################################
_download_file() {
cd "${INSTALL_PATH}" 2>| /dev/null 1>&2 || exit 1
# make the file writable if present
[ -f "${INSTALL_PATH}/${COMMAND_NAME}" ] && chmod u+w -- "${INSTALL_PATH}/${COMMAND_NAME}"
_print_center "justify" "${COMMAND_NAME}" "-"
# now download the binary
if script_download_file="$(curl -Ls --compressed "https://github.com/${REPO}/raw/${LATEST_CURRENT_SHA}/release/${INSTALLATION:-}/gupload")"; then
# check if the downloaded script has any syntax errors, return 2 will be used later
printf "%s\n" "${script_download_file}" | "${INSTALLATION}" -n || return 2
printf "%s\n" "${script_download_file}" >| "${COMMAND_NAME}" || return 1
else
return 1
fi
_clear_line 1
[ -n "${SKIP_SYNC}" ] && return 0
# make the file writable if present
[ -f "${INSTALL_PATH}/${SYNC_COMMAND_NAME}" ] && chmod u+w -- "${INSTALL_PATH}/${SYNC_COMMAND_NAME}"
_print_center "justify" "${SYNC_COMMAND_NAME}" "-"
# now download the binary
if script_download_file="$(curl -Ls --compressed "https://github.com/${REPO}/raw/${LATEST_CURRENT_SHA}/release/${INSTALLATION:-}/gsync")"; then
# check if the downloaded script has any syntax errors, return 2 will be used later
printf "%s\n" "${script_download_file}" | "${INSTALLATION}" -n || return 2
printf "%s\n" "${script_download_file}" >| "${SYNC_COMMAND_NAME}" || return 1
else
return 1
fi
_clear_line 1
cd - 2>| /dev/null 1>&2 || exit 1
return 0
}
###################################################
# Inject installation values to gupload script
###################################################
_inject_values() {
shebang="$(sed -n 1p "${INSTALL_PATH}/${COMMAND_NAME}")"
script_without_values_and_shebang="$(grep -vE "${VALUES_REGEX}" -- "${INSTALL_PATH}/${COMMAND_NAME}" | sed 1d)"
{
printf "%s\n" "${shebang}"
for i in VALUES_LIST ${VALUES_LIST}; do
printf "%s\n" "${i}=\"$(eval printf "%s" \"\$"${i}"\")\" # added values"
done
printf "%s\n" "LATEST_INSTALLED_SHA=\"${LATEST_CURRENT_SHA}\" # added values"
printf "%s\n" "${script_without_values_and_shebang}"
} 1>| "${INSTALL_PATH}/${COMMAND_NAME}"
[ -n "${SKIP_SYNC}" ] && return 0
script_without_values_and_shebang="$(grep -vE "${VALUES_REGEX}" -- "${INSTALL_PATH}/${SYNC_COMMAND_NAME}" | sed 1d)"
printf "%s\n" "${script_without_values_and_shebang}" | sed "s|gupload|${COMMAND_NAME}|g" 1>| "${INSTALL_PATH}/${SYNC_COMMAND_NAME}"
}
###################################################
# Install/Update the download script
# Arguments: None
# Result: read description
# If cannot upload, then print message and exit
###################################################
_start() {
job="${1:-install}"
[ "${job}" = install ] && {
mkdir -p "${INSTALL_PATH}"
_print_center "justify" 'Installing google-drive-upload..' "-"
}
_print_center "justify" "Fetching latest version info.." "-"
LATEST_CURRENT_SHA="$(_get_latest_sha "${TYPE}" "${TYPE_VALUE}" "${REPO}")"
[ -z "${LATEST_CURRENT_SHA}" ] && "${QUIET:-_print_center}" "justify" "Cannot fetch remote latest version." "=" && exit 1
_clear_line 1
[ "${job}" = update ] && {
[ "${LATEST_CURRENT_SHA}" = "${LATEST_INSTALLED_SHA}" ] && "${QUIET:-_print_center}" "justify" "Latest google-drive-upload already installed." "=" && return 0
_print_center "justify" "Updating.." "-"
}
_print_center "justify" "Downloading scripts.." "-"
_download_file
status_download_file="${?}"
if [ "${status_download_file}" = 0 ]; then
if ! _inject_values; then
"${QUIET:-_print_center}" "normal" "Cannot edit installed files" ", check if create a issue on github with proper log." "="
exit 1
fi
chmod "a-w-r-x,${PERM_MODE:-u}+x+r" -- "${INSTALL_PATH}/${COMMAND_NAME}"
chmod "a-w-r-x,${PERM_MODE:-u}+x+r" -- "${INSTALL_PATH}/${SYNC_COMMAND_NAME}"
for _ in 1 2; do _clear_line 1; done
if [ "${job}" = install ]; then
"${QUIET:-_print_center}" "justify" "Installed Successfully" "="
"${QUIET:-_print_center}" "normal" "[ Command name: ${COMMAND_NAME} ]" "="
[ "${GLOBAL_INSTALL}" = false ] && {
"${QUIET:-_print_center}" "normal" " Add below line to your shell rc manually " "-" && printf "\n"
"${QUIET:-_print_center}" "normal" "${INSTALL_RC_STRING}" " " && printf "\n"
"${QUIET:-_print_center}" "normal" "Run below command" " " && printf "\n"
printf "%s\n\n" "echo '${INSTALL_RC_STRING}' >> ${SHELL_RC}"
}
_print_center "justify" "To use the command, do" "-"
_newline "\n" && _print_center "normal" ". ${SHELL_RC}" " "
_print_center "normal" "or" " "
_print_center "normal" "restart your terminal." " "
_newline "\n" && _print_center "normal" "To update the script in future, just run ${COMMAND_NAME} -u/--update." " "
else
"${QUIET:-_print_center}" "justify" 'Successfully Updated.' "="
fi
else
_clear_line 1
if [ "${status_download_file}" = 1 ]; then
"${QUIET:-_print_center}" "justify" "Cannot download the scripts." "="
else
printf "%s\n" "Script downloaded but malformed, try again and if the issue persists open an issue on github."
fi
exit 1
fi
return 0
}
###################################################
# Uninstall the script
# Arguments: None
# Result: read description
# If cannot edit the SHELL_RC if required, then print message and exit
###################################################
_uninstall() {
_print_center "justify" "Uninstalling.." "-"
chmod -f u+w -- "${INSTALL_PATH}/${COMMAND_NAME}"
rm -f -- "${INSTALL_PATH:?}/${COMMAND_NAME:?}"
[ -z "${SKIP_SYNC}" ] && command -v "${SYNC_COMMAND_NAME}" 2>| /dev/null 1>&2 && {
chmod -f u+w -- "${INSTALL_PATH}/${SYNC_COMMAND_NAME}"
rm -f -- "${INSTALL_PATH:?}/${SYNC_COMMAND_NAME:?}"
}
[ "${GLOBAL_INSTALL}" = false ] && [ -z "$(find "${INSTALL_PATH}" -type f 2>| /dev/null)" ] && rm -rf -- "${INSTALL_PATH:?}"
[ -z "$(find "${INFO_PATH}" -type f 2>| /dev/null)" ] && rm -rf -- "${INFO_PATH:?}"
[ "${GLOBAL_INSTALL}" = false ] && {
"${QUIET:-_print_center}" "normal" " Remove below line from your shell rc manually " "-" && printf "\n"
"${QUIET:-_print_center}" "normal" " Shell rc: ${SHELL_RC} " " " && printf "\n"
printf "%s\n\n" "${INSTALL_RC_STRING}"
}
_print_center "justify" "Uninstall complete." "="
return 0
}
###################################################
# Process all arguments given to the script
# Arguments: Many
# ${@} = Flags with arguments
# Result: read description
# If no shell rc file found, then print message and exit
###################################################
_setup_arguments() {
_check_longoptions() {
[ -z "${2}" ] &&
printf '%s: %s: option requires an argument\nTry '"%s -h/--help"' for more information.\n' "${0##*/}" "${1}" "${0##*/}" &&
exit 1
return 0
}
while [ $# -gt 0 ]; do
case "${1}" in
-h | --help) _usage ;;
-p | --path)
_check_longoptions "${1}" "${2}"
_INSTALL_PATH="${2}" && shift
;;
-r | --repo)
_check_longoptions "${1}" "${2}"
REPO="${2}" && shift
;;
-c | --cmd)
_check_longoptions "${1}" "${2}"
COMMAND_NAME="${2}" && shift
;;
-sc | --sync-cmd)
_check_longoptions "${1}" "${2}"
SYNC_COMMAND_NAME="${2}" && shift
;;
-b | -B | --branch)
_check_longoptions "${1}" "${2}"
TYPE_VALUE="${2}" && shift
TYPE=branch
;;
-s | --shell-rc)
_check_longoptions "${1}" "${2}"
SHELL_RC="${2}" && shift
;;
-t | --time)
_check_longoptions "${1}" "${2}"
if [ "${2}" -gt 0 ] 2>| /dev/null; then
AUTO_UPDATE_INTERVAL="$((2 * 86400))" && shift
else
printf "\nError: -t/--time value can only be a positive integer.\n"
exit 1
fi
;;
--sh | --posix) INSTALLATION="sh" ;;
-q | --quiet) QUIET="_print_quiet" ;;
--skip-internet-check) SKIP_INTERNET_CHECK=":" ;;
-U | --uninstall) UNINSTALL="true" ;;
-D | --debug) DEBUG="true" && export DEBUG ;;
*) printf '%s: %s: Unknown option\nTry '"%s -h/--help"' for more information.\n' "${0##*/}" "${1}" "${0##*/}" && exit 1 ;;
esac
shift
done
# 86400 secs = 1 day
AUTO_UPDATE_INTERVAL="${AUTO_UPDATE_INTERVAL:-432000}"
INSTALL_PATH="${_INSTALL_PATH:-${INSTALL_PATH}}"
mkdir -p "${INSTALL_PATH}" 2> /dev/null || :
INSTALL_PATH="$(cd "${INSTALL_PATH%\/*}" && pwd)/${INSTALL_PATH##*\/}" || exit 1
{ printf "%s\n" "${PATH}" | grep -q -e "${INSTALL_PATH}:" -e "${INSTALL_PATH}/:" && IN_PATH="true"; } || :
# modify install string literal if path changed
if [ -n "${_INSTALL_PATH}" ]; then
INSTALL_RC_STRING="[ -f \"${INSTALL_PATH}/${COMMAND_NAME}\" ] && [ -x \"${INSTALL_PATH}/${COMMAND_NAME}\" ] && PATH=\"${INSTALL_PATH}:\${PATH}\""
fi
# check if install path outside home dir and running as root
[ -n "${INSTALL_PATH##"${HOME}"*}" ] && PERM_MODE="a" && GLOBAL_INSTALL="true" && ! [ "$(id -u)" = 0 ] &&
printf "%s\n" "Error: Need root access to run the script for given install path ( ${INSTALL_PATH} )." && exit 1
# global dir must be in executable path
[ "${GLOBAL_INSTALL}" = true ] && [ -z "${IN_PATH}" ] &&
printf "%s\n" "Error: Install path ( ${INSTALL_PATH} ) must be in executable path if it's outside user home directory." && exit 1
_check_debug
return 0
}
main() {
{ command -v bash && [ "$(bash -c 'printf "%s\n" ${BASH_VERSINFO:-0}')" -ge 4 ] && INSTALLATION="bash"; } 1>| /dev/null
_check_dependencies "${?}" && INSTALLATION="${INSTALLATION:-sh}"
set -o noclobber
_variables && _setup_arguments "${@}"
_check_existing_command() {
if COMMAND_PATH="$(command -v "${COMMAND_NAME}")"; then
if SCRIPT_VALUES="$(grep -E "${VALUES_REGEX}|^LATEST_INSTALLED_SHA=\".*\".* # added values|^SELF_SOURCE=\".*\"" -- "${COMMAND_PATH}" || :)" &&
eval "${SCRIPT_VALUES}" 2> /dev/null && [ -n "${LATEST_INSTALLED_SHA:+${SELF_SOURCE}}" ]; then
return 0
else
printf "%s\n" "Error: Cannot validate existing installation, make sure no other program is installed as ${COMMAND_NAME}."
printf "%s\n\n" "You can use -c / --cmd flag to specify custom command name."
printf "%s\n\n" "Create a issue on github with proper log if above mentioned suggestion doesn't work."
exit 1
fi
else
return 1
fi
}
if [ -n "${UNINSTALL}" ]; then
{ _check_existing_command && _uninstall; } || {
_uninstall 2>| /dev/null 1>&2 || :
"${QUIET:-_print_center}" "justify" "google-drive-upload is not installed." "="
exit 0
}
else
"${SKIP_INTERNET_CHECK:-_check_internet}"
{ _check_existing_command && _start update; } || {
_start install
}
fi
return 0
}
main "${@}"