user/bkots

   1 #!/usr/bin/env bash
   2
   3 # Define variables
   4 declare -Ag appRollCall # Associative array for storing app status
   5 declare -Ag fileRollCall # Associative array for storing file status
   6 declare -Ag dirRollCall # Associative array for storing dir status
   7 declare -ag arrayPosArgs # Associative array for processArgs() function
   8 declare -ag calendars;
   9 calendars+=("https://finney.calendar.eternitywall.com");
  10 calendars+=("https://btc.calendar.catallaxy.com");
  11 calendars+=("https://alice.btc.calendar.opentimestamps.org");
  12 calendars+=("https://bob.btc.calendar.opentimestamps.org");
  13 declare -a commands # array for storing assembled commands
  14 age_threshold="60"; # min age to add file; seconds;
  15
  16 # Declare functions
  17 yell() { echo "$0: $*" >&2; } # print script path and all args to stderr
  18 die() { yell "$*"; exit 111; } # same as yell() but non-zero exit status
  19 try() { "$@" || die "cannot $*"; } # runs args as command, reports args if command fails
  20 checkapp() {
  21     # Desc: If arg is a command, save result in assoc array 'appRollCall'
  22     # Usage: checkapp arg1 arg2 arg3 ...
  23     # Version: 0.1.1
  24     # Input: global assoc. array 'appRollCall'
  25     # Output: adds/updates key(value) to global assoc array 'appRollCall'
  26     # Depends: bash 5.0.3
  27     local returnState
  28
  29     #===Process Args===
  30     for arg in "$@"; do
  31         if command -v "$arg" 1>/dev/null 2>&1; then # Check if arg is a valid command
  32             appRollCall[$arg]="true";
  33             if ! [ "$returnState" = "false" ]; then returnState="true"; fi;
  34         else
  35             appRollCall[$arg]="false"; returnState="false";
  36         fi;
  37     done;
  38
  39     #===Determine function return code===
  40     if [ "$returnState" = "true" ]; then
  41         return 0;
  42     else
  43         return 1;
  44     fi;
  45 } # Check that app exists
  46 checkfile() {
  47     # Desc: If arg is a file path, save result in assoc array 'fileRollCall'
  48     # Usage: checkfile arg1 arg2 arg3 ...
  49     # Version: 0.1.1
  50     # Input: global assoc. array 'fileRollCall'
  51     # Output: adds/updates key(value) to global assoc array 'fileRollCall';
  52     # Output: returns 0 if app found, 1 otherwise
  53     # Depends: bash 5.0.3
  54     local returnState
  55
  56     #===Process Args===
  57     for arg in "$@"; do
  58         if [ -f "$arg" ]; then
  59             fileRollCall["$arg"]="true";
  60             if ! [ "$returnState" = "false" ]; then returnState="true"; fi;
  61         else
  62             fileRollCall["$arg"]="false"; returnState="false";
  63         fi;
  64     done;
  65
  66     #===Determine function return code===
  67     if [ "$returnState" = "true" ]; then
  68         return 0;
  69     else
  70         return 1;
  71     fi;
  72 } # Check that file exists
  73 checkdir() {
  74     # Desc: If arg is a dir path, save result in assoc array 'dirRollCall'
  75     # Usage: checkdir arg1 arg2 arg3 ...
  76     # Version 0.1.2
  77     # Input: global assoc. array 'dirRollCall'
  78     # Output: adds/updates key(value) to global assoc array 'dirRollCall';
  79     # Output: returns 0 if all args are dirs; 1 otherwise
  80     # Depends: Bash 5.0.3
  81     local returnState
  82
  83     #===Process Args===
  84     for arg in "$@"; do
  85         if [ -z "$arg" ]; then
  86             dirRollCall["(Unspecified Dirname(s))"]="false"; returnState="false";
  87         elif [ -d "$arg" ]; then
  88             dirRollCall["$arg"]="true";
  89             if ! [ "$returnState" = "false" ]; then returnState="true"; fi
  90         else
  91             dirRollCall["$arg"]="false"; returnState="false";
  92         fi
  93     done
  94
  95     #===Determine function return code===
  96     if [ "$returnState" = "true" ]; then
  97         return 0;
  98     else
  99         return 1;
 100     fi
 101 } # Check that dir exists
 102 displayMissing() {
 103     # Desc: Displays missing apps, files, and dirs
 104     # Usage: displayMissing
 105     # Version 1.0.0
 106     # Input: associative arrays: appRollCall, fileRollCall, dirRollCall
 107     # Output: stderr: messages indicating missing apps, file, or dirs
 108     # Output: returns exit code 0 if nothing missing; 1 otherwise
 109     # Depends: bash 5, checkAppFileDir()
 110     local missingApps value appMissing missingFiles fileMissing
 111     local missingDirs dirMissing
 112
 113     #==BEGIN Display errors==
 114     #===BEGIN Display Missing Apps===
 115     missingApps="Missing apps  :";
 116     #for key in "${!appRollCall[@]}"; do echo "DEBUG:$key => ${appRollCall[$key]}"; done
 117     for key in "${!appRollCall[@]}"; do
 118         value="${appRollCall[$key]}";
 119         if [ "$value" = "false" ]; then
 120             #echo "DEBUG:Missing apps: $key => $value";
 121             missingApps="$missingApps""$key ";
 122             appMissing="true";
 123         fi;
 124     done;
 125     if [ "$appMissing" = "true" ]; then  # Only indicate if an app is missing.
 126         echo "$missingApps" 1>&2;
 127     fi;
 128     unset value;
 129     #===END Display Missing Apps===
 130
 131     #===BEGIN Display Missing Files===
 132     missingFiles="Missing files:";
 133     #for key in "${!fileRollCall[@]}"; do echo "DEBUG:$key => ${fileRollCall[$key]}"; done
 134     for key in "${!fileRollCall[@]}"; do
 135         value="${fileRollCall[$key]}";
 136         if [ "$value" = "false" ]; then
 137             #echo "DEBUG:Missing files: $key => $value";
 138             missingFiles="$missingFiles""$key ";
 139             fileMissing="true";
 140         fi;
 141     done;
 142     if [ "$fileMissing" = "true" ]; then  # Only indicate if an app is missing.
 143         echo "$missingFiles" 1>&2;
 144     fi;
 145     unset value;
 146     #===END Display Missing Files===
 147
 148     #===BEGIN Display Missing Directories===
 149     missingDirs="Missing dirs:";
 150     #for key in "${!dirRollCall[@]}"; do echo "DEBUG:$key => ${dirRollCall[$key]}"; done
 151     for key in "${!dirRollCall[@]}"; do
 152         value="${dirRollCall[$key]}";
 153         if [ "$value" = "false" ]; then
 154             #echo "DEBUG:Missing dirs: $key => $value";
 155             missingDirs="$missingDirs""$key ";
 156             dirMissing="true";
 157         fi;
 158     done;
 159     if [ "$dirMissing" = "true" ]; then  # Only indicate if an dir is missing.
 160         echo "$missingDirs" 1>&2;
 161     fi;
 162     unset value;
 163     #===END Display Missing Directories===
 164
 165     #==END Display errors==
 166     #==BEGIN Determine function return code===
 167     if [ "$appMissing" == "true" ] || [ "$fileMissing" == "true" ] || [ "$dirMissing" == "true" ]; then
 168         return 1;
 169     else
 170         return 0;
 171     fi
 172     #==END Determine function return code===
 173 } # Display missing apps, files, dirs
 174 vbm() {
 175     # Description: Prints verbose message ("vbm") to stderr if opVerbose is set to "true".
 176     # Usage: vbm "DEBUG :verbose message here"
 177     # Version 0.2.0
 178     # Input: arg1: string
 179     #        vars: opVerbose
 180     # Output: stderr
 181     # Depends: bash 5.0.3, GNU-coreutils 8.30 (echo, date)
 182
 183     if [ "$opVerbose" = "true" ]; then
 184         functionTime="$(date --iso-8601=ns)"; # Save current time in nano seconds.
 185         echo "[$functionTime]:$0:""$*" 1>&2;  # Display argument text.
 186     fi
 187
 188     # End function
 189     return 0; # Function finished.
 190 } # Displays message if opVerbose true
 191 showVersion() {
 192     # Desc: Displays script version and license information.
 193     # Usage: showVersion
 194     # Version: 0.0.1
 195     # Input: scriptVersion   var containing version string
 196     # Output: stdout
 197     # Depends: vbm(), yell, GNU-coreutils 8.30
 198
 199     # Initialize function
 200     vbm "DEBUG:showVersion function called."
 201
 202     cat <<'EOF'
 203 bkots 1.0.1
 204 Copyright (C) 2022 Steven Baltakatei Sandoval
 205 License GPLv3: GNU GPL version 3
 206 This is free software; you are free to change and redistribute it.
 207 There is NO WARRANTY, to the extent permitted by law.
 208
 209     GNU Coreutils 8.32
 210     Copyright (C) 2020 Free Software Foundation, Inc.
 211     License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
 212     This is free software: you are free to change and redistribute it.
 213     There is NO WARRANTY, to the extent permitted by law.
 214 EOF
 215
 216     # End function
 217     vbm "DEBUG:showVersion function ended."
 218     return 0; # Function finished.
 219 } # Display script version.
 220 showUsage() {
 221     # Desc: Display script usage information
 222     # Usage: showUsage
 223     # Version 0.0.1
 224     # Input: none
 225     # Output: stdout
 226     # Depends: GNU-coreutils 8.30 (cat)
 227     cat <<'EOF'
 228     USAGE:
 229         bkots [ options ] [PATH...]
 230
 231     POSITIONAL ARGUMENTS:
 232         PATH    Path(s) of file(s) or directory(ies)
 233
 234     OPTIONS:
 235         --dry-run
 236                 Do everything except run 'ots' commands.
 237         -h, --help
 238                 Display help information.
 239         --include-dotfiles
 240                 Include files and directories starting with '.' (not
 241                 included by default).
 242         -r, --recursive
 243                 Consider files in dirs recursively.
 244         --version
 245                 Display script version.
 246         -v, --verbose
 247                 Display debugging info.
 248         --
 249                 Mark end of options. Interpret remaining arguments as
 250                 positional arguments.
 251
 252     DESCRIPTION:
 253         Scans files by file paths or directory paths provided by
 254         positional arguments to see if Open Timestamps '.ots' file
 255         exists. If so, attempt to upgrade and verify the '.ots'
 256         file. If no '.ots' file exists, attempt to create one.
 257
 258         Files with a dotfile parent directory located anywhere in the
 259         file path are ignored by default. (e.g. 'HEAD' in
 260         '/home/user/diary/.git/logs/HEAD' because of '.git'). Dotfiles
 261         themselves are also ignored by default
 262         (e.g. '/home/user/.gitconfig').
 263
 264         Files modified less than 1 minute ago are ignored.
 265
 266     EXAMPLES:
 267       bkots -v foo.txt
 268       bkots foo.txt bar.pdf /home/username/Pictures/
 269 EOF
 270 } # Display information on how to use this script.
 271 processArgs() {
 272     # Desc: Processes arguments provided to script.
 273     # Usage: processArgs "$@"
 274     # Version: 1.0.0
 275     # Input: "$@"          (list of arguments provided to the function)
 276     # Output: Sets following variables used by other functions:
 277     #   opVerbose            Indicates verbose mode enable status.  (ex: "true", "false")
 278     #   arrayPosArgs         Array of remaining positional argments
 279     # Depends:
 280     #   yell()           Displays messages to stderr.
 281     #   vbm()            Displays messsages to stderr if opVerbose set to "true".
 282     #   showUsage()      Displays usage information about parent script.
 283     #   showVersion()    Displays version about parent script.
 284     #   arrayPosArgs     Global array for storing non-option positional arguments (i.e. arguments following the `--` option).
 285     # External dependencies: bash (5.1.16), echo
 286     # Ref./Attrib.:
 287     #  [1]: Marco Aurelio (2014-05-08). "echo that outputs to stderr". https://stackoverflow.com/a/23550347
 288     #  [2]: "Handling positional parameters" (2018-05-12). https://wiki.bash-hackers.org/scripting/posparams
 289
 290     # Initialize function
 291     vbm "DEBUG:processArgs function called."
 292
 293     # Perform work
 294     while [ ! $# -eq 0 ]; do   # While number of arguments ($#) is not (!) equal to (-eq) zero (0).
 295         #yell "DEBUG:Starting processArgs while loop." # Debug stderr message. See [1].
 296         #yell "DEBUG:Provided arguments are:""$*"      # Debug stderr message. See [1].
 297         case "$1" in
 298             --dry-run) # Do not run ots commands
 299                 option_dry_run="true";
 300                 vbm "DEBUG:Option enabled:dry run";;
 301             -h | --help) showUsage; exit 1;; # Display usage.
 302             --include-dotfiles) # Include dotfiles
 303                 option_include_dotfiles="true";
 304                 vbm "DEBUG:Option enabled:include dotfiles";;
 305             -r | --recursive) # Specify recursive option
 306                 option_recursive="true";
 307                 vbm "DEBUG:option enabled:include files in dirs recursively";;
 308             --version) showVersion; exit 1;; # Show version
 309             -v | --verbose) opVerbose="true"; vbm "DEBUG:Verbose mode enabled.";; # Enable verbose mode. See [1].
 310             --) # End of all options. See [2].
 311                 shift;
 312                 for arg in "$@"; do
 313                     vbm "DEBUG:adding to arrayPosArgs:$arg";
 314                     arrayPosArgs+=("$arg");
 315                 done;
 316                 break;;
 317             -*) showUsage; yell "ERROR: Unrecognized option."; exit 1;; # Display usage
 318             *) # Assume remaining arguments are positional arguments
 319                 for arg in "$@"; do
 320                     vbm "DEBUG:adding to arrayPosArgs:$arg";
 321                     arrayPosArgs+=("$arg");
 322                 done;
 323                 break;;
 324             #*) showUsage; yell "ERROR: Unrecognized argument."; exit 1;; # Handle unrecognized options. See [1].
 325         esac
 326         shift
 327     done
 328
 329     # End function
 330     vbm "DEBUG:processArgs function ended."
 331     return  0; # Function finished.
 332 }; # Evaluate script options from positional arguments (ex: $1, $2, $3, etc.).
 333 get_parent_dirnames() {
 334     # Desc: Provides newline-delimited list of each parent dir of a file or dir
 335     # Usage: get_parent_dirnames arg1
 336     # Input: arg1  input  path
 337     # Output: stdout   newline-delimited list of parent dirs
 338     # Version: 0.0.1
 339     # Depends: yell(), die(), try()
 340     local path
 341
 342     # Check input
 343     if [[ $# -ne 1 ]]; then die "FATAL:Incorrect number of arguments:$#"; fi;
 344     if ! { [[ -f $1 ]] || [[ -d $1 ]]; }; then die "FATAL:Not a file or dir:$1"; fi;
 345
 346     # Process path
 347     path="$1";
 348     while [[ -f $path ]] || [[ -d $path ]]; do
 349         path="$(dirname "$path")";
 350         name_base_previous="$name_base";
 351         name_base="$(basename "$path")";
 352         ## Check for stop condition (dirname returns same result as previous iteration)
 353         if [[ $name_base == "$name_base_previous" ]]; then break; fi;
 354         echo "$name_base";
 355     done;
 356 }; # Output parent dirnames to stdout
 357 cmdwrap() {
 358     # print command to stderr
 359     echo "$@" 1>&2;
 360
 361     # execute command
 362     "$@";
 363 }; # print and execute string together
 364 export -f cmdwrap; # export cmdwrap for use in other functions
 365 main() {
 366     # Desc: Creates `.ots` file:
 367     #     - for each file specified in arrayPosArgs array
 368     #     - for each file in each dir specified in arrayPosArgs array
 369     #   Output file created alongside each file or in output directory specified by pathDirIn1
 370     # Usage: main "$@";
 371     # Input: arrayPosArgs   array with positional arguments
 372     #        pathDirOut1    path for output `.ots` files (if pathDirOut1 is specified and is a path)
 373     #        age_threshold  var: mininum age in seconds to timestamp file
 374
 375     # Output: file(s) creates `.ots` file alongside specified files
 376     # Depends: find (GNU findutils) 4.8.0, GNU Coreutils 8.32 (sort), GNU Parallel 20210822
 377     # Ref/Attrib: [1] How to create an array of unique elements from a string/array in bash https://unix.stackexchange.com/a/167194
 378     #             [2] How to find files containing newlines in their names https://stackoverflow.com/a/21727028
 379     #             [3] Get mtime of specific file using Bash? https://stackoverflow.com/a/4774377
 380     #             [4] Search/Replace with string substitution instead of sed. https://www.shellcheck.net/wiki/SC2001
 381     local -a file_list file_list_pruned;
 382     local -a files_to_verify files_to_upgrade files_to_stamp
 383     local -a files_to_verify_pruned files_to_upgrade_pruned files_to_stamp_pruned
 384
 385     # Process args
 386     processArgs "$@";
 387
 388     # Check dependencies
 389     if ! checkapp ots find parallel; then
 390         displayMissing;
 391         die "FATAL:Missing dependencies.";
 392     fi;
 393
 394     # Check arguments
 395     for arg in "${arrayPosArgs[@]}"; do
 396         arg="$(readlink -f "$arg")";
 397         if ! { [[ -d $arg ]] || [[ -f $arg ]]; }; then
 398             die "FATAL:Not a file or dir:arg:$arg";
 399         fi;
 400     done;
 401
 402     # Display ots details
 403     vbm "$(type ots)"; # show how 'ots' is defined
 404         #TODO: add option to define 'ots' as a bash function that
 405         #populates the ots option '--bitcoin-node FILE' with a
 406         #user-specified FILE.
 407
 408     # Populate file_list
 409     vbm "DEBUG:begin populate file_list array";
 410     for item in "${arrayPosArgs[@]}"; do
 411         vbm "DEBUG:adding to file list:item:$item";
 412
 413         ## Get full canonicalized path (follow symlinks)
 414         item="$(readlink -f "$item")";
 415         vbm "DEBUG:item full path:item:$item";
 416
 417         ## Add to list: files
 418         if [[ -f $item ]]; then
 419             vbm "DEBUG:is a file:item:$item";
 420             file_list+=("$item");
 421             vbm "DEBUG:added to file_list:$item";
 422         ## Add to list: files in dirs
 423         elif [[ -d $item ]]; then
 424             vbm "DEBUG:is a dir:item:$item";
 425             ### Check for recursive flag
 426             if [[ "$option_recursive" == "true" ]]; then
 427                 vbm "DEBUG:option_recursive:$option_recursive";
 428                 while read -r line; do
 429                     file_list+=("$line");
 430                     vbm "DEBUG:added to file_list:$line";
 431                 done < <(find "$item" -type f);
 432             else
 433                 while read -r line; do
 434                     file_list+=("$line");
 435                     vbm "DEBUG:added to file_list:$line";
 436                 done < <(find "$item" -maxdepth 1 -type f);
 437             fi;
 438         else
 439             die "FATAL:Not a file or dir:item:$item";
 440         fi;
 441     done;
 442     if [[ $opVerbose == "true" ]]; then
 443         vbm "DEBUG:file_list:";
 444         printf "%s\n" "${file_list[@]}";
 445     fi;
 446
 447     # Prune file_list
 448     for item in "${file_list[@]}"; do
 449         ## Ignore files that end in '.ots.bak'.
 450         if [[ $item =~ '.ots.bak'$ ]]; then
 451             vbm "DEBUG:Skipping file ending in '.ots.bak':item:$item";
 452             continue; # skip to next item
 453         fi;
 454
 455         ## Ignore dotfiles
 456         if ! [[ $option_include_dotfiles == "true" ]]; then
 457             ### Ignore files if '/.' contained within canonical path
 458             pattern="/\."; # a dot after a forward slash
 459             if [[ $item =~ $pattern ]]; then
 460                 continue;
 461             fi;
 462
 463             # ### Ignore files located beneath a dotfile directory (e.g. '/home/my_repo/.git/config')
 464             # unset flag_contains_dotfile_parent;
 465             # while read -r line; do
 466             #     #### Check line from output of get_parent_dirnames
 467             #     pattern="^\.";
 468             #     if [[ $line =~ $pattern ]]; then
 469             #         ##### line starts with '.'
 470             #         vbm "DEBUG:Dotfile parent detected. Not including in file_list_pruned:$item";
 471             #         vbm "DEBUG:Dotfile in path:item:$item";
 472             #         vbm "DEBUG:Dotfile parent:line:$line";
 473             #         flag_contains_dotfile_parent="true";
 474             #         break
 475             #     fi;
 476             # done < <(get_parent_dirnames "$item");
 477             # if [[ $flag_contains_dotfile_parent == "true" ]]; then
 478             #     unset flag_contains_dotfile_parent;
 479             #     continue; # skip to next item (i.e. don't add to file_list_pruned)
 480             # fi;
 481
 482             # ### Ignore dotfiles themselves
 483             # item_basename="$(basename "$item")";
 484             # pattern="^\.";
 485             # if [[ $item_basename =~ $pattern ]]; then
 486             #     vbm "INFO :Skipping dotfile:item:$item";
 487             #     continue; # skip to next item
 488             # fi;
 489         fi;
 490
 491         ## Ignore files with newlines present in filename. See [2].
 492         if [[ $item =~ $'\n' ]]; then
 493             vbm "DEBUG:Skipping file name with newline:$item";
 494             continue; # skip to next item
 495         fi;
 496
 497         ## Ignore files that end in '~'.
 498         if [[ $item =~ ~$ ]]; then
 499             vbm "DEBUG:Skipping file ending in tilde:$item";
 500             continue; # skip to next item
 501         fi;
 502
 503         ## Ignore files modified less than age_threshold. See [3].
 504         time_now="$(date +%s)"; # epoch seconds
 505         item_age="$(stat -c %Y "$item")"; # age in seconds
 506         if [[ $(( time_now - item_age )) -lt "$age_threshold" ]]; then
 507             yell "INFO :Skipping file modified less than $age_threshold seconds ago:item:$item";
 508             continue; # skip to next item
 509         fi;
 510
 511         ## Add item to file_list_pruned
 512         file_list_pruned+=("$item");
 513     done;
 514     if [[ $opVerbose == "true" ]]; then
 515         vbm "DEBUG:file_list_pruned:";
 516         printf "%s\n" "${file_list_pruned[@]}";
 517     fi;
 518
 519     # Decide what actions to take for items in file_list_pruned
 520     for item in "${file_list_pruned[@]}"; do
 521         vbm "DEBUG:considering action to take for item:$item";
 522         unset path_src path_prf dir_parent dir_source;
 523
 524         ## Check file extension
 525         if [[ $item =~ .ots$ ]]; then
 526             ### item ends in '.ots'. Item is proof file.
 527             vbm "DEBUG:item ends in '.ots'. Item is proof file:item:$item";
 528             if [[ -f ${item%.ots} ]]; then
 529                 #### Proof file (item) is adjacent to source file
 530                 vbm "DEBUG:Proof file (item) is adjacent to source file.";
 531                 ##### Upgrade and verify proof file against adjacent source file
 532                 vbm "DEBUG:Marking proof file to be upgraded and verified.";
 533                 path_src="${item%.ots}";
 534                 path_prf="$item";
 535                 files_to_upgrade+=("$(printf "%s" "$path_prf")");
 536                 files_to_verify+=("$(printf "%s\n%s" "$path_src" "$path_prf")");
 537             else
 538                 #### Proof file (item) is not adjacent to source file
 539                 vbm "DEBUG:Proof file (item) is not adjacent to source file.";
 540                 #### Check if source file in parent dir
 541                 dir_parent="$(dirname "$(dirname "$item")" )";
 542                 cand_src_filename="$(basename "$item")";
 543                 cand_src_path="$dir_parent/$cand_src_filename";
 544                 if [[ -f "$cand_src_path" ]]; then
 545                     ##### source file in parent dir
 546                     vbm "DEBUG:found source file in parent:cand_src_path:$cand_src_path";
 547                     path_src="$cand_src_path";
 548                     path_prf="$item";
 549                     files_to_upgrade+=("$(printf "%s" "$path_prf")");
 550                     files_to_verify+=("$(printf "%s\n%s" "$path_src" "$path_prf")");
 551                 else
 552                     #### Throw non-fatal error
 553                     vbm "DEBUG:Source file not found for proof file:item:$item";
 554                     yell "ERROR:Item is proof file but source filei not adjacent in parent dir. item:$item";
 555                     #### Attempt upgrade only
 556                     vbm "DEBUG:Marking proof file to be upgraded.";
 557                     path_prf="$item";
 558                     files_to_upgrade+=("$(printf "%s" "$path_prf")");
 559                 fi;
 560             fi;
 561         else
 562             ### item does not end in '.ots'. Item is source file.
 563             vbm "DEBUG:item does NOT end in '.ots'. Item is source file.";
 564             if [[ -f "$item".ots ]]; then
 565                 #### Proof file is adjacent to source file (item).
 566                 vbm "DEBUG:Proof file is adjacent to source file (item).";
 567                 ##### Upgrade and verify proof file against adjacent source file.
 568                 vbm "DEBUG:Marking proof file to be upgraded and verified.";
 569                 path_src="$item";
 570                 path_prf="$item.ots";
 571                 files_to_upgrade+=("$(printf "%s" "$path_prf")");
 572                 files_to_verify+=("$(printf "%s\n%s" "$path_src" "$path_prf")");
 573             else
 574                 #### Proof file is not adjacent to source file (item).
 575                 #### Check if proof file is in subdir
 576                 vbm "DEBUG:checking if proof file for source file (item) is in subdir:item:$item";
 577                 unset flag_proof_in_subdir;
 578                 dir_item="$(dirname "$item")";
 579                 cand_prf_filename="$(basename "$item")".ots;
 580                 while read -r line; do
 581                     line_basename="$(basename "$line")";
 582                     if [[ $line_basename == "$cand_prf_filename" ]]; then
 583                         flag_proof_in_subdir="true";
 584                         path_prf="$line";
 585                         vbm "DEBUG:proof found in subdir at:line:$line";
 586                         break;
 587                     fi;
 588                 done < <(find "$dir_item" -mindepth 2 -maxdepth 2 -type f)
 589                 if [[ $flag_proof_in_subdir == "true" ]]; then
 590                     ##### Proof file is in subdir
 591                     vbm "DEBUG:Proof file detected in subdir relative to source file (item)";
 592                     #path_prf="$path_prf"; # set in while loop
 593                     path_src="$item";
 594                     files_to_upgrade+=("$(printf "%s" "$path_prf")");
 595                     files_to_verify+=("$(printf "%s\n%s" "$path_src" "$path_prf")");
 596                 else
 597                     ##### Proof file is not in subdir
 598                     vbm "DEBUG:Proof file not detected in subdir relative to source file (item).";
 599                     #### Stamp source file
 600                     vbm "DEBUG:Marking source file to be stamped.";
 601                     path_src="$item";
 602                     files_to_stamp+=("$(printf "%s" "$path_src")")
 603                 fi;
 604                 unset flag_proof_in_subdir;
 605             fi;
 606         fi;
 607     done;
 608     unset path_src path_prf dir_item dir_parent cand_prf_filename cand_src_filename line_basename cand_src_path
 609
 610     # Prune action lists.
 611     ## Sort and prune file action arrays
 612     ### files to upgrade
 613     while read -r -d $'\0' line; do
 614         vbm "DEBUG:adding to files_to_upgrade_pruned:line:$line";
 615         files_to_upgrade_pruned+=("$line");
 616     done < <(printf "%s\0" "${files_to_upgrade[@]}" | sort -zu | shuf -z); # See [1]
 617     if [[ $opVerbose == "true" ]]; then
 618         vbm "DEBUG:files_to_upgrade_pruned:";
 619         printf "%s\n" "${files_to_upgrade_pruned[@]}";
 620     fi;
 621
 622     ### files to verify
 623     while read -r -d $'\0' line; do
 624         vbm "DEBUG:adding to files_to_verify_pruned:line:$line";
 625         files_to_verify_pruned+=("$line");
 626     done < <(printf "%s\0" "${files_to_verify[@]}" | sort -zu | shuf -z); # See [1]
 627     if [[ $opVerbose == "true" ]]; then
 628         vbm "DEBUG:files_to_verify_pruned:";
 629         printf "%s\n\n" "${files_to_verify_pruned[@]}";
 630     fi;
 631
 632     ### files to stamp
 633     while read -r -d $'\0' line; do
 634         vbm "DEBUG:adding to files_to_stamp_pruned:line:$line";
 635         files_to_stamp_pruned+=("$line");
 636     done < <(printf "%s\0" "${files_to_stamp[@]}" | sort -zu | shuf -z); # See [1]
 637     if [[ $opVerbose == "true" ]]; then
 638         vbm "DEBUG:files_to_stamp_pruned:";
 639         printf "%s\n" "${files_to_stamp_pruned[@]}";
 640     fi;
 641
 642     # Act on files
 643     ## Assemble upgrade file commands
 644     for item in "${files_to_upgrade_pruned[@]}"; do
 645         path_prf="$(cut -d $'\n' -f1 < <(echo "$item"))";
 646         path_prf_sesc="${path_prf//\"/\\\"}"; # escape path double quotes. See [4].
 647         if [[ -z "$path_prf" ]]; then
 648             yell "ERROR:blank upgrade item encountered. Skipping:item:$item";
 649             continue;
 650         fi;
 651         vbm "DEBUG:Attempting to upgrade proof file:path_prf:$path_prf";
 652         if [[ ! $option_dry_run == "true" ]]; then
 653             ### Try upgrade with known calendars in random order
 654             while read -r url; do
 655                 vbm "DEBUG:Upgrading with calendar:url:$url";
 656                 if [[ "$opVerbose" = "true" ]]; then
 657                     commands+=("cmdwrap ots -v -l $url --no-default-whitelist upgrade \"$path_prf_sesc\"") && break;
 658                 else
 659                     commands+=("cmdwrap ots -l $url --no-default-whitelist upgrade \"$path_prf_sesc\"") && break;
 660                 fi;
 661                 #ots -l "$url" --no-default-whitelist upgrade "$path_prf" && break;
 662             done < <(printf "%s\n" "${calendars[@]}" | shuf);
 663         else
 664             yell "DEBUG:DRY RUN:Not running:\"ots upgrade $path_prf\"";
 665         fi;
 666     done;
 667
 668     ## Assemble verify file commands
 669     for item in "${files_to_verify_pruned[@]}"; do
 670         path_src="$(cut -d $'\n' -f1 < <(echo "$item"))";
 671         path_prf="$(cut -d $'\n' -f2 < <(echo "$item"))";
 672         path_src_sesc="${path_src//\"/\\\"}"; # escape path double quotes. See [4].
 673         path_prf_sesc="${path_prf//\"/\\\"}"; # escape path double quotes. See [4].
 674         if [[ -z "$path_src" ]] || [[ -z "$path_prf" ]]; then
 675             yell "ERROR:blank verify item encountered. Skipping:item:$item";
 676             continue;
 677         fi;
 678         vbm "DEBUG:Attempting to verify source file:path_src:$path_src";
 679         vbm "DEBUG:    against proof file:          path_prf:$path_prf";
 680         if [[ ! $option_dry_run == "true" ]]; then
 681             ### Try verify with known calendars in random order
 682             while read -r url; do
 683                 vbm "DEBUG:Verifying with calendar:url:$url";
 684                 if [[ "$opVerbose" = "true" ]]; then
 685                     commands+=("cmdwrap ots -v -l $url --no-default-whitelist verify -f \"$path_src_sesc\" \"$path_prf_sesc\"") && break;
 686                 else
 687                     commands+=("cmdwrap ots -l $url --no-default-whitelist verify -f \"$path_src_sesc\" \"$path_prf_sesc\"") && break;
 688                 fi;
 689                 #ots -l "$url" --no-default-whitelist verify -f "$path_src" "$path_prf" && break;
 690             done < <(printf "%s\n" "${calendars[@]}" | shuf);
 691         else
 692             yell "DEBUG:DRY RUN:Not running:\"ots verify -f $path_src $path_prf\"";
 693         fi;
 694     done;
 695
 696     ## Assemble stamp file commands
 697     for item in "${files_to_stamp_pruned[@]}"; do
 698         path_src="$(cut -d $'\n' -f1 < <(echo "$item"))";
 699         path_src_sesc="${path_src//\"/\\\"}"; # escape path double quotes. See [4].
 700         if [[ -z "$path_src" ]]; then
 701             yell "ERROR:blank stamp item encountered. Skipping:item:$item";
 702             continue;
 703         fi;
 704         vbm "DEBUG:Attempting to stamp source file:path_src:$path_src";
 705         if [[ ! $option_dry_run == "true" ]]; then
 706             if [[ "$opVerbose" = "true" ]]; then
 707                 commands+=("cmdwrap ots -v stamp \"$path_src_sesc\"");
 708             else
 709                 commands+=("cmdwrap ots stamp \"$path_src_sesc\"");
 710             fi;
 711             #ots stamp "$path_src";
 712         else
 713             yell "DEBUG:DRY RUN:Not running:\"ots stamp $path_src\"";
 714         fi;
 715     done;
 716
 717     ## Run commands
 718     #yell "DEBUG:commands:$(printf "%s\n" "${commands[@]}")";
 719     printf "%s\n" "${commands[@]}" | parallel --group;
 720
 721 }; # main program
 722
 723 # Run program
 724 main "$@";