[EVA-2020-02.git] / exec / bkgpslog

#!/bin/bash

# Desc: Records gps data until midnight
# Author: Steven Baltakatei Sandoval; License: GPLv3+
# Usage: bkgpslog --output [output dir]

#==BEGIN Define script parameters==
PATH="/opt/bktei:$PATH"         # Add default baltakatei script install directory to PATH (necessary for other bk scripts)
SCRIPT_HOSTNAME=$(hostname)     # Save hostname of system running this script.
SCRIPT_VERSION="bkgpslog 0.0.1" # Define version of script.
SCRIPT_TIME_SHORT="$(date +%Y%m%dT%H%M%S%z)" # Save current date & time in ISO-8601 format.
SCRIPT_DATE_SHORT="$(date +%Y%m%d)"          # Save current date in ISO-8601 format.

declare -Ag appRollCall # Associative array for storing app status
declare -Ag fileRollCall # Associative array for storing file status
declare -Ag dirRollCall # Associative array for storing dir status

#===BEGIN Declare local script functions===
checkapp() {
    # Desc: If arg is a command, save result in assoc array 'appRollCall'
    # Usage: checkapp arg1 arg2 arg3 ...
    # Input: global assoc. array 'appRollCall'
    # Output: adds/updates key(value) to global assoc array 'appRollCall'
    local returnState    
    #echo "DEBUG:$(date +%S.%N)..Starting checkapp function."
    #echo "DEBUG:args: $@"
    #echo "DEBUG:returnState:$returnState"

    #===Process Args===
    for arg in "$@"; do
	#echo "DEBUG:processing arg:$arg"
	if command -v "$arg" 1>/dev/null 2>&1; then # Check if arg is a valid command
	    appRollCall[$arg]="true";
	    #echo "DEBUG:appRollCall[$arg]:"${appRollCall[$arg]}
	    if ! [ "$returnState" = "false" ]; then returnState="true"; fi
	else
	    appRollCall[$arg]="false"; returnState="false";
	fi
    done
    
    #for key in "${!appRollCall[@]}"; do echo "DEBUG:$key => ${appRollCall[$key]}"; done
    #echo "DEBUG:evaluating returnstate. returnState:"$returnState

    #===Determine function return code===
    if [ "$returnState" = "true" ]; then
	#echo "DEBUG:checkapp returns true for $arg";
	return 0;
    else
	#echo "DEBUG:checkapp returns false for $arg";
	return 1;
    fi
} # Check that app exists
checkfile() {
    # Desc: If arg is a file path, save result in assoc array 'fileRollCall'
    # Usage: checkfile arg1 arg2 arg3 ...
    # Input: global assoc. array 'fileRollCall'
    # Output: adds/updates key(value) to global assoc array 'fileRollCall';
    # Output: returns 0 if app found, 1 otherwise
    local returnState

    #===Process Args===
    for arg in "$@"; do
	#echo "DEBUG:processing arg:$arg"
	if [ -f "$arg" ]; then
	    fileRollCall["$arg"]="true";
	    #echo "DEBUG:fileRollCall[\"$arg\"]:"${fileRollCall["$arg"]}
	    if ! [ "$returnState" = "false" ]; then returnState="true"; fi
	else
	    fileRollCall["$arg"]="false"; returnState="false";
	fi
    done

    #for key in "${!fileRollCall[@]}"; do echo "DEBUG:fileRollCall key [$key] is:${fileRollCall[$key]}"; done
    #echo "DEBUG:evaluating returnstate. returnState:"$returnState
    
    #===Determine function return code===
    if [ "$returnState" = "true" ]; then
	#echo "DEBUG:checkapp returns true for $arg";
	return 0;
    else
	#echo "DEBUG:checkapp returns false for $arg";
	return 1;
    fi
} # Check that file exists
checkdir() {
    # Desc: If arg is a dir path, save result in assoc array 'dirRollCall'
    # Usage: checkdir arg1 arg2 arg3 ...
    # Input: global assoc. array 'dirRollCall'
    # Output: adds/updates key(value) to global assoc array 'dirRollCall';
    # Output: returns 0 if app found, 1 otherwise
    local returnState

    #===Process Args===
    for arg in "$@"; do
	#echo "DEBUG:processing arg:$arg"
	if [ -d "$arg" ]; then
	    dirRollCall["$arg"]="true";
	    #echo "DEBUG:dirRollCall[\"$arg\"]:"${dirRollCall["$arg"]}
	    if ! [ "$returnState" = "false" ]; then returnState="true"; fi
	elif [ "$arg" = "" ]; then
	    dirRollCall["$arg"]="false"; returnState="false";
	else
	    returnState="false";
	fi
    done

    #for key in "${!dirRollCall[@]}"; do echo "DEBUG:dirRollCall key [$key] is:${dirRollCall[$key]}"; done
    #echo "DEBUG:evaluating returnstate. returnState:"$returnState
    
    #===Determine function return code===
    if [ "$returnState" = "true" ]; then
	#echo "DEBUG:checkapp returns true for $arg";
	return 0;
    else
	#echo "DEBUG:checkapp returns false for $arg";
	return 1;
    fi
} # Check that dir exists

# Yell, Die, Try Three-Fingered Claw technique
# Ref/Attrib: https://stackoverflow.com/a/25515370
yell() { echo "$0: $*" >&2; }
die() { yell "$*"; exit 111; }
try() { "$@" || die "cannot $*"; }

echoerr() {
    echo "$@" 1>&2; # Define stderr echo function.
} # Define stderr message function.
showUsage() {
    echoerr "USAGE:"
    echoerr "    bkgpslog [ options ]"
    echoerr
    echoerr "OPTIONS:"
    echoerr "    -h, --help"
    echoerr "            Display help information."
    echoerr
    echoerr "    --version"
    echoerr "            Display script version."
    echoerr
    echoerr "    -v, --verbose"
    echoerr "            Display debugging info."
    echoerr
    echoerr "    -o, --output [ directory ]"
    echoerr "            Specify output directory to save logs."
} # Display information on how to use this script.
showVersion() {
    echoerr "$SCRIPT_VERSION"
} # Display script version.
vbm() {
    # Usage: vbm "DEBUG:verbose message here"
    # Description: Prints verbose message ("vbm") to stderr if OPTION_VERBOSE is set to "true".
    # Input:
    #   - OPTION_VERBOSE  variable set by processArguments function. (ex: "true", "false")
    #   - "$@"            positional arguments fed to this function.
    # Output: stderr
    # Script function dependencies: echoerr
    # External function dependencies: echo
    # Last modified: 2020-04-11T23:57Z
    # Last modified by: Steven Baltakatei Sandoval
    # License: GPLv3+
    # Ref./Attrib:

    if [ "$OPTION_VERBOSE" = "true" ]; then
	FUNCTION_TIME=$(date --iso-8601=ns); # Save current time in nano seconds.
	echoerr "[$FUNCTION_TIME] ""$*"; # Display argument text.
    fi

    # End function
    return 0; # Function finished.
} # Verbose message display function.
processArguments() {
    while [ ! $# -eq 0 ]; do   # While number of arguments ($#) is not (!) equal to (-eq) zero (0).
	echoerr "DEBUG:Starting processArguments while loop."
	echoerr "DEBUG:Provided arguments are:""$*"
	case "$1" in
	    --h | --help) showUsage; exit 1;; # Display usage.
	    --version) showVersion; exit 1;; # Show version
	    --v | --verbose) OPTION_VERBOSE="true"; vbm "DEBUG:Verbose mode enabled.";; # Enable verbose mode.
	    --o | --output) if [ -d "$2" ]; then DIROUT="$2"; vbm "DEBUG:DIROUT:$DIROUT"; shift; fi ;; # Define output directory.
	    *) echoerr "ERROR: Unrecognized argument."; exit 1;; # Handle unrecognized options.
	esac
	shift
    done
} # Argument Processing
timeUntilNextDay(){
    # Desc: Report seconds until next day.
    # Output: stdout: integer seconds until next day
    # Output: exit code 0 if stdout > 0; 1 if stdout = 0; 2 if stdout < 0
    # Usage: timeUntilNextDay
    # Usage: if ! myTTL="$(timeUntilNextDay)"; then yell "ERROR in if statement"; exit 1; fi
    local returnState TIME_CURRENT TIME_NEXT_DAY SECONDS_UNTIL_NEXT_DAY
    TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second.
    TIME_NEXT_DAY="$(date -d "$TIME_CURRENT next day" --iso-8601=date)"; # Produce timestamp of beginning of tomorrow with resolution of 1 second.
    SECONDS_UNTIL_NEXT_DAY="$(( $(date +%s -d "$TIME_NEXT_DAY") - $(date +%s -d "$TIME_CURRENT") ))" ; # Calculate seconds until closest future midnight (res. 1 second).
    if [[ "$SECONDS_UNTIL_NEXT_DAY" -gt 0 ]]; then
	returnState="true";
    elif [[ "$SECONDS_UNTIL_NEXT_DAY" -eq 0 ]]; then
	returnState="WARNING_ZERO";
	yell "WARNING:Reported time until next day exactly zero.";
    elif [[ "$SECONDS_UNTIL_NEXT_DAY" -lt 0 ]]; then
	returnState="WARNING_NEGATIVE";
	yell "WARNING:Reported time until next day is negative.";
    fi

    try echo "$SECONDS_UNTIL_NEXT_DAY"; # Report
    
    #===Determine function return code===
    if [[ "$returnState" = "true" ]]; then
	return 0;
    elif [[ "$returnState" = "WARNING_ZERO" ]]; then
	return 1;
    elif [[ "$returnState" = "WARNING_NEGATIVE" ]]; then
	return 2;
    fi
} # Report seconds until next day
timeUntilNextHour(){
    # Desc: Report seconds until next hour
    # Output: stdout: integer seconds until next hour
    # Output: exit code 0 if stdout > 0; 1 if stdout = 0; 2 if stdout < 0
    # Usage: timeUntilNextHour
    # Usage: if ! myTTL="$(timeUntilNextHour)"; then yell "ERROR in if statement"; exit 1; fi
    local returnState TIME_CURRENT TIME_NEXT_HOUR SECONDS_UNTIL_NEXT_HOUR
    TIME_CURRENT="$(date --iso-8601=seconds)"; # Produce `date`-parsable current timestamp with resolution of 1 second.
    TIME_NEXT_HOUR="$(date -d "$TIME_CURRENT next hour" --iso-8601=hours)"; # Produce `date`-parsable current time stamp with resolution of 1 second.
    SECONDS_UNTIL_NEXT_HOUR="$(( $(date +%s -d "$TIME_NEXT_HOUR") - $(date +%s -d "$TIME_CURRENT") ))"; # Calculate seconds until next hour (res. 1 second).
    if [[ "$SECONDS_UNTIL_NEXT_HOUR" -gt 0 ]]; then
	returnState="true";
    elif [[ "$SECONDS_UNTIL_NEXT_HOUR" -eq 0 ]]; then
	returnState="WARNING_ZERO";
	yell "WARNING:Reported time until next hour exactly zero.";
    elif [[ "$SECONDS_UNTIL_NEXT_HOUR" -lt 0 ]]; then
	returnState="WARNING_NEGATIVE";
	yell "WARNING:Reported time until next hour is negative.";
    fi

    try echo "$SECONDS_UNTIL_NEXT_HOUR"; # Report
    
    #===Determine function return code===
    if [[ "$returnState" = "true" ]]; then
	return 0;
    elif [[ "$returnState" = "WARNING_ZERO" ]]; then
	return 1;
    elif [[ "$returnState" = "WARNING_NEGATIVE" ]]; then
	return 2;
    fi
} # Report seconds until next hour
dateTimeShort(){
    # Desc: Timestamp without separators (YYYYmmddTHHMMSS+zzzz)
    # Usage: dateTimeShort
    # Output: stdout: timestamp (ISO-8601, no separators)
    local TIME_CURRENT TIME_CURRENT_SHORT
    TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second.
    TIME_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%dT%H%M%S%z)"; # Produce separator-less current timestamp with resolution 1 second.
    echo "$TIME_CURRENT_SHORT";
} # Get date&time without separators
main() {
    processArguments "$@" # Process arguments.
    if checkapp gpspipe && checkdir "$DIROUT"; then

	# # Set script lifespan to end at start of next day
	# if ! scriptTTL="$(timeUntilNextDay)"; then
	#     if [[ "$scriptTTL" -eq 0 ]]; then
	# 	((scriptTTL++)); # Add 1 because 0 would cause 'timeout' to never timeout.
	#     else
	# 	yell "ERROR: timeUntilNextDay exit code $?"; exit 1;
	#     fi;
	# fi;

	# Set script lifespan to end at start of next hour
	if ! scriptTTL="$(timeUntilNextHour)"; then
	    if [[ "$scriptTTL" -eq 0 ]]; then
		((scriptTTL++)); # Add 1 because 0 would cause 'timeout' to never timeout.
	    else
		yell "ERROR: timeUntilNextHour exit code $?"; exit 1;
	    fi;
	fi;
        
	# Determine buffer lifespan
	bufferTTL="60";

	# Record gps data until script lifespan ends
	declare debugCounter; debugCounter="0"
	while [[ "$SECONDS" -lt "$scriptTTL" ]]; do
	    ((debugCounter++))
      	    # Determine output file paths (time is start of buffer period)
	    FILEOUT_BASENAME="$(dateTimeShort)""--P""$bufferTTL""S..""$SCRIPT_HOSTNAME""_location" ; # ISO-8601 YYYYmmddTHHMMSS+zzP[$bufferTTL]S
	    FILEOUT_NMEA="$FILEOUT_BASENAME".nmea ;
	    FILEOUT_GPX="$FILEOUT_BASENAME".gpx ;
	    FILEOUT_KML="$FILEOUT_BASENAME".kml ;
	    # Fill buffer
	    buffer="$(timeout "$bufferTTL""s" gpspipe -r)"; # Record gpspipe nmea data to buffer for bufferTTL seconds
	    # Process and save buffers
	    echo "$buffer"                                     > "$DIROUT"/"$FILEOUT_NMEA" & # Save NMEA format
	    echo "$buffer" | gpsbabel -i nmea -f - -o gpx -F - > "$DIROUT"/"$FILEOUT_GPX"  & # Save GPX format
	    echo "$buffer" | gpsbabel -i nmea -f - -o kml -F - > "$DIROUT"/"$FILEOUT_KML"  & # Save KML format
	    vbm "DEBUG:Completed buffer session $debugCounter ." 1>&2;
	    # Reset buffer and filenames
	    unset buffer FILEOUT_BASENAME FILEOUT_NMEA FILEOUT_GPX FILEOUT_KML;
	done
    fi
} # Main function.
#===END Declare local script functions===
#==END Define script parameters==


#==BEGIN Perform work and exit==
main "$@" # Run main function.
exit 0;
#==END Perform work and exit==


    #gpspipe -r -d -l -o "$DIROUT1"/"$FILEOUT1" ;
Commit	Line	Data
032f4b05 SBS	1	#!/bin/bash
032f4b05 SBS	2
8fbca23d SBS	3	# Desc: Records gps data until midnight
	4	# Author: Steven Baltakatei Sandoval; License: GPLv3+
	5	# Usage: bkgpslog --output [output dir]
032f4b05	6
8fbca23d	7	#==BEGIN Define script parameters==
032f4b05 SBS	8	PATH="/opt/bktei:$PATH" # Add default baltakatei script install directory to PATH (necessary for other bk scripts)
	9	SCRIPT_HOSTNAME=$(hostname) # Save hostname of system running this script.
	10	SCRIPT_VERSION="bkgpslog 0.0.1" # Define version of script.
	11	SCRIPT_TIME_SHORT="$(date +%Y%m%dT%H%M%S%z)" # Save current date & time in ISO-8601 format.
	12	SCRIPT_DATE_SHORT="$(date +%Y%m%d)" # Save current date in ISO-8601 format.
8fbca23d SBS	13
	14	declare -Ag appRollCall # Associative array for storing app status
	15	declare -Ag fileRollCall # Associative array for storing file status
	16	declare -Ag dirRollCall # Associative array for storing dir status
	17
	18	#===BEGIN Declare local script functions===
	19	checkapp() {
	20	# Desc: If arg is a command, save result in assoc array 'appRollCall'
	21	# Usage: checkapp arg1 arg2 arg3 ...
	22	# Input: global assoc. array 'appRollCall'
	23	# Output: adds/updates key(value) to global assoc array 'appRollCall'
	24	local returnState
	25	#echo "DEBUG:$(date +%S.%N)..Starting checkapp function."
	26	#echo "DEBUG:args: $@"
	27	#echo "DEBUG:returnState:$returnState"
	28
	29	#===Process Args===
	30	for arg in "$@"; do
	31	#echo "DEBUG:processing arg:$arg"
0b3dde05	32	if command -v "$arg" 1>/dev/null 2>&1; then # Check if arg is a valid command
8fbca23d SBS	33	appRollCall[$arg]="true";
	34	#echo "DEBUG:appRollCall[$arg]:"${appRollCall[$arg]}
	35	if ! [ "$returnState" = "false" ]; then returnState="true"; fi
	36	else
	37	appRollCall[$arg]="false"; returnState="false";
	38	fi
	39	done
	40
	41	#for key in "${!appRollCall[@]}"; do echo "DEBUG:$key => ${appRollCall[$key]}"; done
	42	#echo "DEBUG:evaluating returnstate. returnState:"$returnState
	43
	44	#===Determine function return code===
	45	if [ "$returnState" = "true" ]; then
	46	#echo "DEBUG:checkapp returns true for $arg";
	47	return 0;
	48	else
	49	#echo "DEBUG:checkapp returns false for $arg";
	50	return 1;
	51	fi
	52	} # Check that app exists
	53	checkfile() {
	54	# Desc: If arg is a file path, save result in assoc array 'fileRollCall'
	55	# Usage: checkfile arg1 arg2 arg3 ...
	56	# Input: global assoc. array 'fileRollCall'
	57	# Output: adds/updates key(value) to global assoc array 'fileRollCall';
	58	# Output: returns 0 if app found, 1 otherwise
	59	local returnState
	60
	61	#===Process Args===
	62	for arg in "$@"; do
	63	#echo "DEBUG:processing arg:$arg"
	64	if [ -f "$arg" ]; then
	65	fileRollCall["$arg"]="true";
	66	#echo "DEBUG:fileRollCall[\"$arg\"]:"${fileRollCall["$arg"]}
	67	if ! [ "$returnState" = "false" ]; then returnState="true"; fi
	68	else
	69	fileRollCall["$arg"]="false"; returnState="false";
	70	fi
	71	done
	72
	73	#for key in "${!fileRollCall[@]}"; do echo "DEBUG:fileRollCall key [$key] is:${fileRollCall[$key]}"; done
	74	#echo "DEBUG:evaluating returnstate. returnState:"$returnState
	75
	76	#===Determine function return code===
	77	if [ "$returnState" = "true" ]; then
	78	#echo "DEBUG:checkapp returns true for $arg";
	79	return 0;
	80	else
	81	#echo "DEBUG:checkapp returns false for $arg";
	82	return 1;
	83	fi
	84	} # Check that file exists
	85	checkdir() {
	86	# Desc: If arg is a dir path, save result in assoc array 'dirRollCall'
	87	# Usage: checkdir arg1 arg2 arg3 ...
	88	# Input: global assoc. array 'dirRollCall'
	89	# Output: adds/updates key(value) to global assoc array 'dirRollCall';
	90	# Output: returns 0 if app found, 1 otherwise
	91	local returnState
	92
	93	#===Process Args===
	94	for arg in "$@"; do
	95	#echo "DEBUG:processing arg:$arg"
	96	if [ -d "$arg" ]; then
97	dirRollCall["$arg"]="true";
98	#echo "DEBUG:dirRollCall[\"$arg\"]:"${dirRollCall["$arg"]}
99	if ! [ "$returnState" = "false" ]; then returnState="true"; fi
bcf09dcc	100	elif [ "$arg" = "" ]; then
8fbca23d	101	dirRollCall["$arg"]="false"; returnState="false";
bcf09dcc SBS	102	else
bcf09dcc SBS	103	returnState="false";
8fbca23d SBS	104	fi
	105	done
	106
	107	#for key in "${!dirRollCall[@]}"; do echo "DEBUG:dirRollCall key [$key] is:${dirRollCall[$key]}"; done
	108	#echo "DEBUG:evaluating returnstate. returnState:"$returnState
	109
	110	#===Determine function return code===
	111	if [ "$returnState" = "true" ]; then
	112	#echo "DEBUG:checkapp returns true for $arg";
	113	return 0;
	114	else
	115	#echo "DEBUG:checkapp returns false for $arg";
	116	return 1;
	117	fi
	118	} # Check that dir exists
032f4b05	119
c609b9c8 SBS	120	# Yell, Die, Try Three-Fingered Claw technique
	121	# Ref/Attrib: https://stackoverflow.com/a/25515370
	122	yell() { echo "$0: $*" >&2; }
	123	die() { yell "$*"; exit 111; }
	124	try() { "$@" \|\| die "cannot $*"; }
	125
032f4b05 SBS	126	echoerr() {
	127	echo "$@" 1>&2; # Define stderr echo function.
	128	} # Define stderr message function.
	129	showUsage() {
	130	echoerr "USAGE:"
94e094d1	131	echoerr " bkgpslog [ options ]"
032f4b05 SBS	132	echoerr
	133	echoerr "OPTIONS:"
	134	echoerr " -h, --help"
	135	echoerr " Display help information."
	136	echoerr
	137	echoerr " --version"
	138	echoerr " Display script version."
	139	echoerr
	140	echoerr " -v, --verbose"
	141	echoerr " Display debugging info."
	142	echoerr
	143	echoerr " -o, --output [ directory ]"
	144	echoerr " Specify output directory to save logs."
	145	} # Display information on how to use this script.
	146	showVersion() {
	147	echoerr "$SCRIPT_VERSION"
	148	} # Display script version.
	149	vbm() {
0b3dde05 SBS	150	# Usage: vbm "DEBUG:verbose message here"
	151	# Description: Prints verbose message ("vbm") to stderr if OPTION_VERBOSE is set to "true".
	152	# Input:
	153	# - OPTION_VERBOSE variable set by processArguments function. (ex: "true", "false")
	154	# - "$@" positional arguments fed to this function.
	155	# Output: stderr
	156	# Script function dependencies: echoerr
	157	# External function dependencies: echo
	158	# Last modified: 2020-04-11T23:57Z
	159	# Last modified by: Steven Baltakatei Sandoval
	160	# License: GPLv3+
	161	# Ref./Attrib:
	162
	163	if [ "$OPTION_VERBOSE" = "true" ]; then
	164	FUNCTION_TIME=$(date --iso-8601=ns); # Save current time in nano seconds.
	165	echoerr "[$FUNCTION_TIME] ""$*"; # Display argument text.
032f4b05	166	fi
0b3dde05 SBS	167
	168	# End function
	169	return 0; # Function finished.
032f4b05 SBS	170	} # Verbose message display function.
	171	processArguments() {
	172	while [ ! $# -eq 0 ]; do # While number of arguments ($#) is not (!) equal to (-eq) zero (0).
	173	echoerr "DEBUG:Starting processArguments while loop."
0b3dde05	174	echoerr "DEBUG:Provided arguments are:""$*"
032f4b05 SBS	175	case "$1" in
	176	--h \| --help) showUsage; exit 1;; # Display usage.
	177	--version) showVersion; exit 1;; # Show version
	178	--v \| --verbose) OPTION_VERBOSE="true"; vbm "DEBUG:Verbose mode enabled.";; # Enable verbose mode.
e014f239	179	--o \| --output) if [ -d "$2" ]; then DIROUT="$2"; vbm "DEBUG:DIROUT:$DIROUT"; shift; fi ;; # Define output directory.
032f4b05 SBS	180	*) echoerr "ERROR: Unrecognized argument."; exit 1;; # Handle unrecognized options.
	181	esac
	182	shift
	183	done
	184	} # Argument Processing
c2aaff78 SBS	185	timeUntilNextDay(){
	186	# Desc: Report seconds until next day.
	187	# Output: stdout: integer seconds until next day
8fbca23d	188	# Output: exit code 0 if stdout > 0; 1 if stdout = 0; 2 if stdout < 0
c2aaff78 SBS	189	# Usage: timeUntilNextDay
	190	# Usage: if ! myTTL="$(timeUntilNextDay)"; then yell "ERROR in if statement"; exit 1; fi
	191	local returnState TIME_CURRENT TIME_NEXT_DAY SECONDS_UNTIL_NEXT_DAY
8fbca23d	192	TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second.
c2aaff78 SBS	193	TIME_NEXT_DAY="$(date -d "$TIME_CURRENT next day" --iso-8601=date)"; # Produce timestamp of beginning of tomorrow with resolution of 1 second.
	194	SECONDS_UNTIL_NEXT_DAY="$(( $(date +%s -d "$TIME_NEXT_DAY") - $(date +%s -d "$TIME_CURRENT") ))" ; # Calculate seconds until closest future midnight (res. 1 second).
	195	if [[ "$SECONDS_UNTIL_NEXT_DAY" -gt 0 ]]; then
	196	returnState="true";
	197	elif [[ "$SECONDS_UNTIL_NEXT_DAY" -eq 0 ]]; then
	198	returnState="WARNING_ZERO";
	199	yell "WARNING:Reported time until next day exactly zero.";
	200	elif [[ "$SECONDS_UNTIL_NEXT_DAY" -lt 0 ]]; then
	201	returnState="WARNING_NEGATIVE";
	202	yell "WARNING:Reported time until next day is negative.";
	203	fi
	204
	205	try echo "$SECONDS_UNTIL_NEXT_DAY"; # Report
	206
	207	#===Determine function return code===
	208	if [[ "$returnState" = "true" ]]; then
	209	return 0;
	210	elif [[ "$returnState" = "WARNING_ZERO" ]]; then
	211	return 1;
	212	elif [[ "$returnState" = "WARNING_NEGATIVE" ]]; then
	213	return 2;
	214	fi
	215	} # Report seconds until next day
	216	timeUntilNextHour(){
	217	# Desc: Report seconds until next hour
	218	# Output: stdout: integer seconds until next hour
	219	# Output: exit code 0 if stdout > 0; 1 if stdout = 0; 2 if stdout < 0
	220	# Usage: timeUntilNextHour
	221	# Usage: if ! myTTL="$(timeUntilNextHour)"; then yell "ERROR in if statement"; exit 1; fi
	222	local returnState TIME_CURRENT TIME_NEXT_HOUR SECONDS_UNTIL_NEXT_HOUR
	223	TIME_CURRENT="$(date --iso-8601=seconds)"; # Produce `date`-parsable current timestamp with resolution of 1 second.
	224	TIME_NEXT_HOUR="$(date -d "$TIME_CURRENT next hour" --iso-8601=hours)"; # Produce `date`-parsable current time stamp with resolution of 1 second.
	225	SECONDS_UNTIL_NEXT_HOUR="$(( $(date +%s -d "$TIME_NEXT_HOUR") - $(date +%s -d "$TIME_CURRENT") ))"; # Calculate seconds until next hour (res. 1 second).
	226	if [[ "$SECONDS_UNTIL_NEXT_HOUR" -gt 0 ]]; then
8fbca23d	227	returnState="true";
c2aaff78	228	elif [[ "$SECONDS_UNTIL_NEXT_HOUR" -eq 0 ]]; then
8fbca23d	229	returnState="WARNING_ZERO";
c2aaff78 SBS	230	yell "WARNING:Reported time until next hour exactly zero.";
c2aaff78 SBS	231	elif [[ "$SECONDS_UNTIL_NEXT_HOUR" -lt 0 ]]; then
8fbca23d	232	returnState="WARNING_NEGATIVE";
c2aaff78	233	yell "WARNING:Reported time until next hour is negative.";
8fbca23d	234	fi
032f4b05	235
c2aaff78	236	try echo "$SECONDS_UNTIL_NEXT_HOUR"; # Report
8fbca23d SBS	237
	238	#===Determine function return code===
	239	if [[ "$returnState" = "true" ]]; then
	240	return 0;
	241	elif [[ "$returnState" = "WARNING_ZERO" ]]; then
	242	return 1;
	243	elif [[ "$returnState" = "WARNING_NEGATIVE" ]]; then
	244	return 2;
	245	fi
c2aaff78	246	} # Report seconds until next hour
8fbca23d SBS	247	dateTimeShort(){
	248	# Desc: Timestamp without separators (YYYYmmddTHHMMSS+zzzz)
	249	# Usage: dateTimeShort
	250	# Output: stdout: timestamp (ISO-8601, no separators)
c2aaff78	251	local TIME_CURRENT TIME_CURRENT_SHORT
8fbca23d SBS	252	TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second.
	253	TIME_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%dT%H%M%S%z)"; # Produce separator-less current timestamp with resolution 1 second.
	254	echo "$TIME_CURRENT_SHORT";
	255	} # Get date&time without separators
032f4b05	256	main() {
0b3dde05	257	processArguments "$@" # Process arguments.
8fbca23d	258	if checkapp gpspipe && checkdir "$DIROUT"; then
20dae002	259
c2aaff78 SBS	260	# # Set script lifespan to end at start of next day
	261	# if ! scriptTTL="$(timeUntilNextDay)"; then
	262	# if [[ "$scriptTTL" -eq 0 ]]; then
	263	# ((scriptTTL++)); # Add 1 because 0 would cause 'timeout' to never timeout.
	264	# else
	265	# yell "ERROR: timeUntilNextDay exit code $?"; exit 1;
	266	# fi;
	267	# fi;
032f4b05	268
c2aaff78 SBS	269	# Set script lifespan to end at start of next hour
	270	if ! scriptTTL="$(timeUntilNextHour)"; then
	271	if [[ "$scriptTTL" -eq 0 ]]; then
	272	((scriptTTL++)); # Add 1 because 0 would cause 'timeout' to never timeout.
	273	else
	274	yell "ERROR: timeUntilNextHour exit code $?"; exit 1;
	275	fi;
	276	fi;
8fbca23d SBS	277
8fbca23d SBS	278	# Determine buffer lifespan
94e094d1	279	bufferTTL="60";
032f4b05	280
5b601ed5	281	# Record gps data until script lifespan ends
8fbca23d SBS	282	declare debugCounter; debugCounter="0"
	283	while [[ "$SECONDS" -lt "$scriptTTL" ]]; do
	284	((debugCounter++))
b9a85f63	285	# Determine output file paths (time is start of buffer period)
fde89ac0	286	FILEOUT_BASENAME="$(dateTimeShort)""--P""$bufferTTL""S..""$SCRIPT_HOSTNAME""_location" ; # ISO-8601 YYYYmmddTHHMMSS+zzP[$bufferTTL]S
20dae002 SBS	287	FILEOUT_NMEA="$FILEOUT_BASENAME".nmea ;
	288	FILEOUT_GPX="$FILEOUT_BASENAME".gpx ;
	289	FILEOUT_KML="$FILEOUT_BASENAME".kml ;
b9a85f63 SBS	290	# Fill buffer
	291	buffer="$(timeout "$bufferTTL""s" gpspipe -r)"; # Record gpspipe nmea data to buffer for bufferTTL seconds
	292	# Process and save buffers
	293	echo "$buffer" > "$DIROUT"/"$FILEOUT_NMEA" & # Save NMEA format
	294	echo "$buffer" \| gpsbabel -i nmea -f - -o gpx -F - > "$DIROUT"/"$FILEOUT_GPX" & # Save GPX format
	295	echo "$buffer" \| gpsbabel -i nmea -f - -o kml -F - > "$DIROUT"/"$FILEOUT_KML" & # Save KML format
94e094d1	296	vbm "DEBUG:Completed buffer session $debugCounter ." 1>&2;
f8ea736f	297	# Reset buffer and filenames
d4ead4d1	298	unset buffer FILEOUT_BASENAME FILEOUT_NMEA FILEOUT_GPX FILEOUT_KML;
8fbca23d SBS	299	done
	300	fi
	301	} # Main function.
	302	#===END Declare local script functions===
	303	#==END Define script parameters==
032f4b05 SBS	304
032f4b05 SBS	305
8fbca23d SBS	306	#==BEGIN Perform work and exit==
	307	main "$@" # Run main function.
	308	exit 0;
	309	#==END Perform work and exit==
032f4b05 SBS	310
032f4b05 SBS	311
032f4b05 SBS	312
032f4b05 SBS	313	#gpspipe -r -d -l -o "$DIROUT1"/"$FILEOUT1" ;