ab-docker/ab-nginx
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refactor(SCRIPT): new formatting

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- check for tput, set formatting to null if not installed
- collapse scriptHelp according to screen width
This commit is contained in:
Asif Bacchus 2021-01-06 00:19:54 -07:00
parent 6f4b2509b4
commit b617b7e633
1 changed files with 54 additions and 32 deletions
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82
ab-nginx.sh
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@ -5,11 +5,21 @@
# #
# text formatting presets # text formatting presets
cyan=$(tput setaf 6) if command -v tput > /dev/null; then
cyan=$(tput bold)$(tput setaf 6)
err=$(tput bold)$(tput setaf 1) err=$(tput bold)$(tput setaf 1)
magenta=$(tput setaf 5) magenta=$(tput sgr0)$(tput setaf 5)
norm=$(tput sgr0) norm=$(tput sgr0)
yellow=$(tput setaf 3) yellow=$(tput sgr0)$(tput setaf 3)
width=$(tput cols)
else
cyan=''
err=''
magenta=''
norm=''
yellow=''
width=80
fi
### parameter defaults ### parameter defaults
@ -43,36 +53,48 @@ checkExist () {
} }
scriptHelp () { scriptHelp () {
printf "\n${magenta}%80s\n" | tr " " "-" printf "\n%s%1000s\n" "$magenta" | tr " " "-" | cut -c -$width
printf "${norm}This is a simple helper script so you can avoid lengthy typing when working\n" printf "%s" "$norm"
printf "with the nginx container. The script reads the contents of 'ab-nginx.params'\n" textblock "This is a simple helper script so you can avoid lengthy typing when working with the nginx container. The script reads the contents of 'ab-nginx.params' and constructs various 'docker run' commands based on that file. The biggest time-saver is working with certificates. If they are specified in the params file, the script will automatically bind-mount them so nginx serves content via SSL by default."
printf "and constructs various 'docker run' commands based on that file. The biggest\n" newline
printf "timesaver is working with certificates. If they are specified in params file,\n" textblock "If you run the script with no parameters, it will execute the container 'normally': Run in detached mode with nginx automatically launched and logging to stdout. If you specified certificates, nginx will serve over SSL by default."
printf "the script will automatically bind-mount them so nginx serves content via SSL\n" newline
printf "by default.\n\n" textblock "Note: Containers (except shell) are always set to restart 'unless-stopped'. You must remove them manually if desired."
printf "If you run the script with no parameters, it will execute the container\n" printf "%s" "$magenta"
printf "'normally': Run in detached mode with nginx automatically launched and\n" newline
printf "logging to stdout. If you specified certificates, nginx will serve over SSL\n" textblock "The script has the following parameters:"
printf "by default.\n" textblockParam 'parameter in cyan' 'default in yellow'
printf "Note: Containers (except shell) are always set to restart 'unless-stopped'. You\n" newline
printf "must remove them manually if desired.\n\n" textblockParam '-n|--name' 'ab-nginx'
printf "${magenta}The script has the following parameters:\n" textblock "Change the name of the container. This is cosmetic and does not affect operation in any way."
printf "${cyan}(parameter in cyan) ${yellow}(default in yellow)${norm}\n\n" newline
printf "${cyan}-n|--name${norm}\n" textblockParam '-s|--shell' 'off: run in detached mode'
printf "Change the name of the container. This is cosmetic and does not affect\n" textblock "Enter the container using an interactive POSIX shell. This happens after startup operations but *before* nginx is actually started. This is a great way to see configuration changes possibly stopping nginx from starting normally."
printf "operation in any way.\n" printf "%s" "$yellow"
printf "${yellow}(ab-nginx)${norm}\n\n" newline
printf "${cyan}-s|--shell${norm}\n" textblock "More information can be found at: https://git.asifbacchus.app/ab-docker/ab-nginx/wiki"
printf "Enter the container using an interactive POSIX shell. This happens after\n" printf "%s%1000s\n" "$magenta" | tr " " "-" | cut -c -$width
printf "startup operations but *before* nginx is actually started. This is a great way\n"
printf "to see configuration changes possibly stopping nginx from starting normally.\n"
printf "${yellow}(off: run in detached mode)${norm}\n\n"
printf "${yellow}More information can be found at:\n"
printf "https://git.asifbacchus.app/ab-docker/ab-nginx/wiki\n"
printf "${magenta}%80s\n\n" | tr " " "-"
exit 0 exit 0
} }
newline () {
printf "\n"
}
textblock () {
printf "%s\n" "$1" | fold -w "$width" -s
}
textblockParam() {
if [ -z "$2" ]; then
# no default
printf "%s%s%s\n" "$cyan" "$1" "$norm"
else
# default param provided
printf "%s%s %s(%s)%s\n" "$cyan" "$1" "$yellow" "$2" "$norm"
fi
}
### pre-requisite checks ### pre-requisite checks