| | 1 | #!/usr/bin/env bash |
| | 2 | # Desc: Wrapper for mpv that accepts directory or file paths via posargs or stdin lines |
| | 3 | # Usage: bkmpv2 [DIR] |
| | 4 | # Version: 0.1.0 |
| | 5 | # Depends: GNU Parallel, GNU Bash v5.1.16, mpv v0.34.1, bc v1.07.1 |
| | 6 | # Ref/Attrib: [1] Tange, Ole. GNU Parallel with Bash Array. 2019-03-24. https://unix.stackexchange.com/a/508365/411854 |
| | 7 | # Example: find $HOME/Music -type d | bkmpv2 |
| | 8 | # Example: bkmpv2 $HOME/Music/ |
| | 9 | # Example: find $HOME -type f -name "*.mp3" | bkmpv2 |
| | 10 | # Note: Does not follow symlinks |
| | 11 | |
| | 12 | # Find settings |
| | 13 | firegex=".+\(aac\|aif\|aiff\|flac\|m4a\|mp3\|mp4\|ogg\|opus\|wav\)$"; # update according to `find . -type f | grep -Eo "\.([[:alnum:]])+$" | sort -u` |
| | 14 | fsize="10k"; # default: minimum "10k" |
| | 15 | fdepth_posarg="10"; # find depth for positional arguments |
| | 16 | fdepth_stdin="1"; # find depth for stdin |
| | 17 | fc_falloff="1000"; # characteristic file count falloff in the output |
| | 18 | fc_redbase="10"; # logarithm base to reduce output file count |
| | 19 | |
| | 20 | export firegex fsize ; # export for parallel |
| | 21 | |
| | 22 | #===Declare local functions=== |
| | 23 | yell() { echo "$0: $*" >&2; } # print script path and all args to stderr |
| | 24 | die() { yell "$*"; exit 111; } # same as yell() but non-zero exit status |
| | 25 | must() { "$@" || die "cannot $*"; } # runs args as command, reports args if command fails |
| | 26 | checkapp() { |
| | 27 | # Desc: If arg is a command, save result in assoc array 'appRollCall' |
| | 28 | # Usage: checkapp arg1 arg2 arg3 ... |
| | 29 | # Version: 0.1.1 |
| | 30 | # Input: global assoc. array 'appRollCall' |
| | 31 | # Output: adds/updates key(value) to global assoc array 'appRollCall' |
| | 32 | # Depends: bash 5.0.3 |
| | 33 | local returnState |
| | 34 | |
| | 35 | #===Process Args=== |
| | 36 | for arg in "$@"; do |
| | 37 | if command -v "$arg" 1>/dev/null 2>&1; then # Check if arg is a valid command |
| | 38 | appRollCall[$arg]="true"; |
| | 39 | if ! [ "$returnState" = "false" ]; then returnState="true"; fi; |
| | 40 | else |
| | 41 | appRollCall[$arg]="false"; returnState="false"; |
| | 42 | fi; |
| | 43 | done; |
| | 44 | |
| | 45 | #===Determine function return code=== |
| | 46 | if [ "$returnState" = "true" ]; then |
| | 47 | return 0; |
| | 48 | else |
| | 49 | return 1; |
| | 50 | fi; |
| | 51 | } # Check that app exists |
| | 52 | checkfile() { |
| | 53 | # Desc: If arg is a file path, save result in assoc array 'fileRollCall' |
| | 54 | # Usage: checkfile arg1 arg2 arg3 ... |
| | 55 | # Version: 0.1.1 |
| | 56 | # Input: global assoc. array 'fileRollCall' |
| | 57 | # Output: adds/updates key(value) to global assoc array 'fileRollCall'; |
| | 58 | # Output: returns 0 if app found, 1 otherwise |
| | 59 | # Depends: bash 5.0.3 |
| | 60 | local returnState |
| | 61 | |
| | 62 | #===Process Args=== |
| | 63 | for arg in "$@"; do |
| | 64 | if [ -f "$arg" ]; then |
| | 65 | fileRollCall["$arg"]="true"; |
| | 66 | if ! [ "$returnState" = "false" ]; then returnState="true"; fi; |
| | 67 | else |
| | 68 | fileRollCall["$arg"]="false"; returnState="false"; |
| | 69 | fi; |
| | 70 | done; |
| | 71 | |
| | 72 | #===Determine function return code=== |
| | 73 | if [ "$returnState" = "true" ]; then |
| | 74 | return 0; |
| | 75 | else |
| | 76 | return 1; |
| | 77 | fi; |
| | 78 | } # Check that file exists |
| | 79 | checkdir() { |
| | 80 | # Desc: If arg is a dir path, save result in assoc array 'dirRollCall' |
| | 81 | # Usage: checkdir arg1 arg2 arg3 ... |
| | 82 | # Version 0.1.1 |
| | 83 | # Input: global assoc. array 'dirRollCall' |
| | 84 | # Output: adds/updates key(value) to global assoc array 'dirRollCall'; |
| | 85 | # Output: returns 0 if app found, 1 otherwise |
| | 86 | # Depends: Bash 5.0.3 |
| | 87 | local returnState |
| | 88 | |
| | 89 | #===Process Args=== |
| | 90 | for arg in "$@"; do |
| | 91 | if [ -d "$arg" ]; then |
| | 92 | dirRollCall["$arg"]="true"; |
| | 93 | if ! [ "$returnState" = "false" ]; then returnState="true"; fi |
| | 94 | else |
| | 95 | dirRollCall["$arg"]="false"; returnState="false"; |
| | 96 | fi |
| | 97 | done |
| | 98 | |
| | 99 | #===Determine function return code=== |
| | 100 | if [ "$returnState" = "true" ]; then |
| | 101 | return 0; |
| | 102 | else |
| | 103 | return 1; |
| | 104 | fi |
| | 105 | } # Check that dir exists |
| | 106 | displayMissing() { |
| | 107 | # Desc: Displays missing apps, files, and dirs |
| | 108 | # Usage: displayMissing |
| | 109 | # Version 0.1.1 |
| | 110 | # Input: associative arrays: appRollCall, fileRollCall, dirRollCall |
| | 111 | # Output: stderr: messages indicating missing apps, file, or dirs |
| | 112 | # Depends: bash 5, checkAppFileDir() |
| | 113 | local missingApps value appMissing missingFiles fileMissing |
| | 114 | local missingDirs dirMissing |
| | 115 | |
| | 116 | #==BEGIN Display errors== |
| | 117 | #===BEGIN Display Missing Apps=== |
| | 118 | missingApps="Missing apps :"; |
| | 119 | #for key in "${!appRollCall[@]}"; do echo "DEBUG:$key => ${appRollCall[$key]}"; done |
| | 120 | for key in "${!appRollCall[@]}"; do |
| | 121 | value="${appRollCall[$key]}"; |
| | 122 | if [ "$value" = "false" ]; then |
| | 123 | #echo "DEBUG:Missing apps: $key => $value"; |
| | 124 | missingApps="$missingApps""$key "; |
| | 125 | appMissing="true"; |
| | 126 | fi; |
| | 127 | done; |
| | 128 | if [ "$appMissing" = "true" ]; then # Only indicate if an app is missing. |
| | 129 | echo "$missingApps" 1>&2; |
| | 130 | fi; |
| | 131 | unset value; |
| | 132 | #===END Display Missing Apps=== |
| | 133 | |
| | 134 | #===BEGIN Display Missing Files=== |
| | 135 | missingFiles="Missing files:"; |
| | 136 | #for key in "${!fileRollCall[@]}"; do echo "DEBUG:$key => ${fileRollCall[$key]}"; done |
| | 137 | for key in "${!fileRollCall[@]}"; do |
| | 138 | value="${fileRollCall[$key]}"; |
| | 139 | if [ "$value" = "false" ]; then |
| | 140 | #echo "DEBUG:Missing files: $key => $value"; |
| | 141 | missingFiles="$missingFiles""$key "; |
| | 142 | fileMissing="true"; |
| | 143 | fi; |
| | 144 | done; |
| | 145 | if [ "$fileMissing" = "true" ]; then # Only indicate if an app is missing. |
| | 146 | echo "$missingFiles" 1>&2; |
| | 147 | fi; |
| | 148 | unset value; |
| | 149 | #===END Display Missing Files=== |
| | 150 | |
| | 151 | #===BEGIN Display Missing Directories=== |
| | 152 | missingDirs="Missing dirs:"; |
| | 153 | #for key in "${!dirRollCall[@]}"; do echo "DEBUG:$key => ${dirRollCall[$key]}"; done |
| | 154 | for key in "${!dirRollCall[@]}"; do |
| | 155 | value="${dirRollCall[$key]}"; |
| | 156 | if [ "$value" = "false" ]; then |
| | 157 | #echo "DEBUG:Missing dirs: $key => $value"; |
| | 158 | missingDirs="$missingDirs""$key "; |
| | 159 | dirMissing="true"; |
| | 160 | fi; |
| | 161 | done; |
| | 162 | if [ "$dirMissing" = "true" ]; then # Only indicate if an dir is missing. |
| | 163 | echo "$missingDirs" 1>&2; |
| | 164 | fi; |
| | 165 | unset value; |
| | 166 | #===END Display Missing Directories=== |
| | 167 | |
| | 168 | #==END Display errors== |
| | 169 | } # Display missing apps, files, dirs |
| | 170 | check_depends() { |
| | 171 | if ! checkapp mpv parallel bkshuf bc b2sum; then |
| | 172 | displayMissing; |
| | 173 | die "FATAL:Missing apps."; |
| | 174 | fi; |
| | 175 | return 1; |
| | 176 | }; # check dependencies |
| | 177 | checkInt() { |
| | 178 | # Desc: Checks if arg is integer |
| | 179 | # Usage: checkInt arg |
| | 180 | # Input: arg: integer |
| | 181 | # Output: - return code 0 (if arg is integer) |
| | 182 | # - return code 1 (if arg is not integer) |
| | 183 | # Example: if ! checkInt $arg; then echo "not int"; fi; |
| | 184 | # Version: 0.0.1 |
| | 185 | local returnState |
| | 186 | |
| | 187 | #===Process Arg=== |
| | 188 | if [[ $# -ne 1 ]]; then |
| | 189 | die "ERROR:Invalid number of arguments:$#"; |
| | 190 | fi; |
| | 191 | |
| | 192 | RETEST1='^[0-9]+$'; # Regular Expression to test |
| | 193 | if [[ ! $1 =~ $RETEST1 ]] ; then |
| | 194 | returnState="false"; |
| | 195 | else |
| | 196 | returnState="true"; |
| | 197 | fi; |
| | 198 | |
| | 199 | #===Determine function return code=== |
| | 200 | if [ "$returnState" = "true" ]; then |
| | 201 | return 0; |
| | 202 | else |
| | 203 | return 1; |
| | 204 | fi; |
| | 205 | } # Checks if arg is integer |
| | 206 | read_stdin() { |
| | 207 | # Desc: Consumes stdin; outputs as stdout lines |
| | 208 | # Input: stdin (consumes) |
| | 209 | # Output: stdout (newline delimited) |
| | 210 | # Example: printf "foo\nbar\n" | read_stdin |
| | 211 | # Depends: GNU bash (version 5.1.16) |
| | 212 | # Version: 0.0.1 |
| | 213 | local input_stdin output; |
| | 214 | |
| | 215 | # Store stdin |
| | 216 | if [[ -p /dev/stdin ]]; then |
| | 217 | input_stdin="$(cat -)"; |
| | 218 | fi; |
| | 219 | |
| | 220 | # Store as output array elements |
| | 221 | ## Read in stdin |
| | 222 | if [[ -n $input_stdin ]]; then |
| | 223 | while read -r line; do |
| | 224 | output+=("$line"); |
| | 225 | done < <(printf "%s\n" "$input_stdin"); |
| | 226 | fi; |
| | 227 | |
| | 228 | # Print to stdout |
| | 229 | printf "%s\n" "${output[@]}"; |
| | 230 | }; # read stdin to stdout lines |
| | 231 | read_psarg() { |
| | 232 | # Desc: Reads arguments; outputs as stdout lines |
| | 233 | # Input: args |
| | 234 | # Output: stdout (newline delimited) |
| | 235 | # Example: read_psarg "$@" |
| | 236 | # Depends: GNU bash (version 5.1.16) |
| | 237 | # Version: 0.0.1 |
| | 238 | local input_psarg output; |
| | 239 | |
| | 240 | # Store arguments |
| | 241 | if [[ $# -gt 0 ]]; then |
| | 242 | input_psarg="$*"; |
| | 243 | fi; |
| | 244 | |
| | 245 | # Store as output array elements |
| | 246 | ## Read in positional arguments |
| | 247 | if [[ -n $input_psarg ]]; then |
| | 248 | for arg in "$@"; do |
| | 249 | output+=("$arg"); |
| | 250 | done; |
| | 251 | fi; |
| | 252 | |
| | 253 | # Print to stdout |
| | 254 | printf "%s\n" "${output[@]}"; |
| | 255 | }; # read positional argument to stdout lines |
| | 256 | find_flist() { |
| | 257 | # Desc: print file list to stdout via `find` using script parameters |
| | 258 | # Input: arg1: path to dir |
| | 259 | # var: find_depth |
| | 260 | # var: pattern_find_iregex |
| | 261 | # var: find_size |
| | 262 | if [[ ! -d "$1" ]]; then return 1; fi; |
| | 263 | must find "$1" -maxdepth "$fdepth" -type f -iregex "$firegex" -size +"$fsize"; |
| | 264 | }; # print file list to stdout from dir with script parameters |
| | 265 | main() { |
| | 266 | # Input: var: firegex find iregex file name pattern |
| | 267 | # var: fsize find minimum file siz |
| | 268 | # var: fc_falloff characteristic file count falloff in the output |
| | 269 | # var: fc_redbase logarithm base to reduce output file count |
| | 270 | |
| | 271 | local re_dotfile; |
| | 272 | declare -a files_stdin dirs_stdin dirs_psarg; |
| | 273 | declare -a paths_files; |
| | 274 | declare list_paths_files; |
| | 275 | declare -a cmd_args; |
| | 276 | check_depends; |
| | 277 | |
| | 278 | yell "STATUS:$SECONDS:Started."; |
| | 279 | #Populate dirs_stdin and dirs_psarg arrays |
| | 280 | ## Read stdin as lines |
| | 281 | re_dotfile="^\."; # first char is a dot |
| | 282 | while read -r line; do |
| | 283 | line="$(readlink -e "$line")"; |
| | 284 | line_bn="$(basename "$line")"; |
| | 285 | # Check if dir and not dotfile |
| | 286 | if [[ -d "$line" ]] && [[ ! "$line_bn" =~ $re_dotfile ]]; then |
| | 287 | dirs_stdin+=("$line"); |
| | 288 | continue; |
| | 289 | fi; |
| | 290 | |
| | 291 | # Check if file |
| | 292 | if [[ -f "$line" ]]; then |
| | 293 | files_stdin+=("$line"); |
| | 294 | continue; |
| | 295 | fi; |
| | 296 | |
| | 297 | # Throw warning |
| | 298 | yell "WARNING:Not a valid dir or file:$line"; |
| | 299 | done < <( read_stdin; read_psarg "$@"; ); |
| | 300 | yell "STATUS:$SECONDS:Read stdin and psargs."; |
| | 301 | |
| | 302 | # Catch all arrays empty |
| | 303 | if [[ "${#dirs_stdin[@]}" -le 0 ]] && \ |
| | 304 | [[ "${#dirs_psarg[@]}" -le 0 ]] && \ |
| | 305 | [[ "${#files_stdin[@]}" -le 0 ]]; then |
| | 306 | die "FATAL:No valid directories or files provided."; |
| | 307 | fi; |
| | 308 | |
| | 309 | # Generate file list |
| | 310 | ## Add stdin argument input |
| | 311 | if [[ "${#files_stdin[@]}" -gt 0 ]]; then |
| | 312 | paths_files+=("${files_stdin[@]}"); |
| | 313 | fi; |
| | 314 | |
| | 315 | ## Call find_filelist() in parallel for positional argument input |
| | 316 | if [[ "${#dirs_psarg[@]}" -gt 0 ]]; then |
| | 317 | fdepth="$fdepth_posarg"; export fdepth; # for dirs from positional arguments |
| | 318 | paths_files+=("$( parallel find_flist {} "$fdepth" "$firegex" "$fsize" ::: "${dirs_psarg[@]}" )"); # See [1] |
| | 319 | fi; |
| | 320 | ## Call find_filelist() in parallel for stdin input |
| | 321 | if [[ "${#dirs_stdin[@]}" -gt 0 ]]; then |
| | 322 | fdepth="$fdepth_stdin"; export fdepth; # 1 for dirs from stdin |
| | 323 | paths_files+=("$( parallel find_flist {} "$fdepth" "$firegex" "$fsize" ::: "${dirs_stdin[@]}" )"); # See [1] |
| | 324 | fi; |
| | 325 | |
| | 326 | # Convert paths_files array into file list |
| | 327 | for i in "${!paths_files[@]}"; do |
| | 328 | list_paths_files="$(printf "%s\n%s" "${paths_files[$i]}" "$list_paths_files")"; |
| | 329 | done; |
| | 330 | # Get stats |
| | 331 | fc="$(wc -l < <(echo -n "$list_paths_files"))"; |
| | 332 | echo "STATUS:$SECONDS:file count:fc:$fc" |
| | 333 | yell "STATUS:$SECONDS:Generated file list."; |
| | 334 | |
| | 335 | # Sort, remove duplicate paths |
| | 336 | list_paths_files="$(echo "$list_paths_files" | sort -u | tr -s '\n')"; |
| | 337 | yell "STATUS:$SECONDS:Sorted and deduplicated list."; |
| | 338 | |
| | 339 | # Remove paths with dotfiles |
| | 340 | list_paths_files="$(echo "$list_paths_files" | grep -viE "/\." )"; |
| | 341 | yell "STATUS:$SECONDS:Removed dotfiles."; |
| | 342 | |
| | 343 | # Write playlist |
| | 344 | list_paths_files_tmp="/dev/shm/$(date +%Y%m%dT%H%M%S.%N%z)"..mpv_paths.txt; |
| | 345 | ## Reduce output file count if greater than falloff |
| | 346 | if [[ $fc -gt $fc_falloff ]]; then |
| | 347 | bc_exp="$fc_falloff * (1 + l( $fc / $fc_falloff )/l($fc_redbase))"; |
| | 348 | fc_out="$( echo "$bc_exp" | bc -l )"; |
| | 349 | else |
| | 350 | fc_out="$fc"; |
| | 351 | fi; |
| | 352 | ## Reduce output file count by fixed fraction (bkshuf optimization) |
| | 353 | fc_out="$(echo "$fc_out * 0.75" | bc -l)"; |
| | 354 | ## Select subset via bkshuf |
| | 355 | ### Specify bkshuf-specific environment variables |
| | 356 | export BKSHUF_PARAM_LINC=1000000; # for these numbers of lines of input.. |
| | 357 | export BKSHUF_PARAM_GSIZE=25; # target this group size |
| | 358 | ### Round file count down |
| | 359 | fc_out="$(printf "%.0f" "$fc_out")"; # round float down to int |
| | 360 | ### Get neighbor-preserving shuffled subset (size $fc_out) |
| | 361 | yell "STATUS:$SECONDS:Selecting $fc_out of $fc files via bkshuf..."; |
| | 362 | must \ |
| | 363 | echo -n "$list_paths_files" | \ |
| | 364 | bkshuf "$fc_out" > "$list_paths_files_tmp"; |
| | 365 | yell "STATUS:$SECONDS:Wrote playlist."; |
| | 366 | |
| | 367 | # Print stats |
| | 368 | yell "STATUS:$SECONDS:Built file list in $SECONDS seconds."; |
| | 369 | |
| | 370 | # Run mpv with filelist |
| | 371 | ## Form command |
| | 372 | cmd_args+=("mpv"); |
| | 373 | cmd_args+=("--audio-display=no"); # disable video for audio files |
| | 374 | cmd_args+=("--vid=no"); # donʼt show video track |
| | 375 | cmd_args+=("--image-display-duration=0"); # don't show album art |
| | 376 | cmd_args+=("--af=scaletempo=stride=15:overlap=1:search=15"); # improve scrubbing |
| | 377 | cmd_args+=("--playlist=$list_paths_files_tmp"); # read playlist |
| | 378 | declare -p cmd_args; # debug |
| | 379 | ## Execute command |
| | 380 | must "${cmd_args[@]}"; |
| | 381 | must rm "$list_paths_files_tmp"; |
| | 382 | }; |
| | 383 | export -f yell die must read_stdin read_psarg find_flist; |
| | 384 | |
| | 385 | main "$@"; |
| | 386 | |
| | 387 | # Author: Steven Baltakatei Sandoval |
| | 388 | # License: GPLv3+ |
projects / BK-2020-03.git / blame_incremental