X-Git-Url: https://zdv2.bktei.com/gitweb/BK-2020-03.git/blobdiff_plain/966a8d1189ee6e224fcc4cbee330c3e6df7fb077..e424b71045e5259dcdb9f28e70864a7f96499ef9:/user/bkfeh diff --git a/user/bkfeh b/user/bkfeh index d2f5423..fba697c 100755 --- a/user/bkfeh +++ b/user/bkfeh @@ -1,7 +1,8 @@ #!/usr/bin/env bash -# Version: 0.0.5 +# Desc: Wrapper for feh that accepts directory paths via posargs or stdin lines. +# Version: 0.3.0 # Ref/Attrib: [1] Tange, Ole. GNU Parallel with Bash Array. 2019-03-24. https://unix.stackexchange.com/a/508365/411854 -# Depends: GNU Parallel, GNU Bash v5.1.16, feh 3.6.3 +# Depends: GNU Parallel, GNU Bash v5.1.16, feh 3.6.3, GNU Coreutils 8.32 (b2sum) #===Declare local functions=== yell() { echo "$0: $*" >&2; } # print script path and all args to stderr @@ -152,36 +153,81 @@ displayMissing() { #==END Display errors== } # Display missing apps, files, dirs check_depends() { - if ! checkapp feh parallel; then displayMissing; die "FATAL:Missing apps."; fi; + if ! checkapp feh parallel bkshuf b2sum; then + displayMissing; + die "FATAL:Missing apps."; + fi; return 1; }; # check dependencies -read_stdin_psarg() { - # Desc: Consumes stdin and reads arguments; outputs as stdout lines +checkInt() { + # Desc: Checks if arg is integer + # Usage: checkInt arg + # Input: arg: integer + # Output: - return code 0 (if arg is integer) + # - return code 1 (if arg is not integer) + # Example: if ! checkInt $arg; then echo "not int"; fi; + # Version: 0.0.1 + local returnState + + #===Process Arg=== + if [[ $# -ne 1 ]]; then + die "ERROR:Invalid number of arguments:$#"; + fi; + + RETEST1='^[0-9]+$'; # Regular Expression to test + if [[ ! $1 =~ $RETEST1 ]] ; then + returnState="false"; + else + returnState="true"; + fi; + + #===Determine function return code=== + if [ "$returnState" = "true" ]; then + return 0; + else + return 1; + fi; +} # Checks if arg is integer +read_stdin() { + # Desc: Consumes stdin; outputs as stdout lines # Input: stdin (consumes) - # Input: args # Output: stdout (newline delimited) - # Example: read_stdin_psarg "$@" + # Example: printf "foo\nbar\n" | read_stdin # Depends: GNU bash (version 5.1.16) - # Version: 0.0.3 - local input_stdin input_psarg output; + # Version: 0.0.1 + local input_stdin output; # Store stdin if [[ -p /dev/stdin ]]; then input_stdin="$(cat -)"; - fi; + fi; - # Store arguments - if [[ $# -gt 0 ]]; then - input_psarg="$*"; - fi; - - # Combine as output array elements + # Store as output array elements ## Read in stdin if [[ -n $input_stdin ]]; then while read -r line; do output+=("$line"); done < <(printf "%s\n" "$input_stdin"); fi; + + # Print to stdout + printf "%s\n" "${output[@]}"; +}; # read stdin to stdout lines +read_psarg() { + # Desc: Reads arguments; outputs as stdout lines + # Input: args + # Output: stdout (newline delimited) + # Example: read_psarg "$@" + # Depends: GNU bash (version 5.1.16) + # Version: 0.0.1 + local input_psarg output; + + # Store arguments + if [[ $# -gt 0 ]]; then + input_psarg="$*"; + fi; + + # Store as output array elements ## Read in positional arguments if [[ -n $input_psarg ]]; then for arg in "$@"; do @@ -191,35 +237,104 @@ read_stdin_psarg() { # Print to stdout printf "%s\n" "${output[@]}"; -}; # read stdin and positional argument to stdout lines -print_filelist() { +}; # read positional argument to stdout lines +find_flist() { # Desc: print file list to stdout via `find` using script parameters # Input: arg1: path to dir # var: find_depth # var: pattern_find_iregex # var: find_size if [[ ! -d "$1" ]]; then return 1; fi; - must find "$1" -maxdepth "$find_depth" -type f -iregex "$pattern_find_iregex" -size +"$find_size"; + must find "$1" -maxdepth "$fdepth" -type f -iregex "$firegex" -size +"$fsize"; }; # print file list to stdout from dir with script parameters +save_sample() { + # Usage: save_sample arg1 + # Input: arg1 list_paths (list of files to take samples from) + # envvar BKFEH_SAMPLE_DIR (environment variable set outside of this script) + # envvar BKFEH_SAMPLE_SIZE (space limit for sample dir files) + # Depends: GNU Parallel, GNU find, GNU Coreutils 8.32 (cut, find, du) + # BK-2020-03: bkshuf (0.0.1), yell() + local list_paths + sample_count="100"; # max number of images to put in sample dir + sample_max_space="10000000"; # max bytes to put in sample dir + + # Load environment variables if set + if [[ ! -v BKFEH_SAMPLE_DIR ]]; then return 0; fi; # return early if environment var not set. + if [[ -v BKFEH_SAMPLE_SIZE ]] && checkInt "$BKFEH_SAMPLE_SIZE"; then + sample_max_space="$BKFEH_SAMPLE_SIZE"; + fi; + if [[ -v BKFEH_SAMPLE_COUNT ]] && checkInt "$BKFEH_SAMPLE_COUNT"; then + sample_count="$BKFEH_SAMPLE_COUNT"; + fi; + + if [[ -n "$1" ]]; then + list_paths="$1"; # newline-delimited list of file paths to sample from + else + yell "ERROR:NO paths available to sample."; + fi; + + if [[ -d "$BKFEH_SAMPLE_DIR" ]]; then + #sample_dir="$BKFEH_SAMPLE_DIR"; + yell "STATUS:Environment variable BKFEH_SAMPLE_DIR set. Clearing and saving samples..."; + + ## clear previous sample + count_prev_samples="$(find "$BKFEH_SAMPLE_DIR" -maxdepth 1 -type f | wc -l)"; + yell "STATUS:Deleting $count_prev_samples previous samples..."; + find "$BKFEH_SAMPLE_DIR" -maxdepth 1 -type f -exec rm '{}' \; ; + + ## save random sample + yell "STATUS:Saving random sample of size $sample_count to $BKFEH_SAMPLE_DIR..."; + list_paths_sample="$(echo "$list_paths" | bkshuf "$sample_count" | head -n"$sample_count")"; + n_samp=0; # init sample file counter + sample_log="$BKFEH_SAMPLE_DIR"/paths.txt; + printf "%s,%s,%s\n" "n_samp" "file_hash" "file_path" >> "$sample_log"; + while read -r line; do + if [[ -z "$line" ]]; then continue; fi; + ### check size limit + sample_act_space="$(du -bd1 "$BKFEH_SAMPLE_DIR" | cut -f1 )"; # actual used space + cand_space="$(du -bd1 "$line" | cut -f1 )"; # size of candidate file to add + sample_req_space="$((sample_act_space + cand_space))"; + + ### Customize file names + n_samp_w="$(printf "%s" "$sample_count" | wc -c)"; + n_samp_fmt="%0""$n_samp_w""d"; + n_samp_dd="$(printf "$n_samp_fmt" "$n_samp")"; # sample number fixed-width + file_path="$line"; + #file_dir="$(dirname "$line")"; + file_name="$(basename "$line")"; + file_hash="$(b2sum -l32 "$line" | awk '{print $1}')"; # use file hash to avoid clobbering + file_ext="${file_name##*.}"; + file_name="${file_name%.*}"; + file_shortname="${file_name:0:32}"; + file_name_new="$n_samp_dd"_"$file_hash".."$file_shortname"."$file_ext"; + file_path_new="$BKFEH_SAMPLE_DIR"/"$file_name_new" + if [[ "$sample_req_space" -lt "$sample_max_space" ]]; then + #### add file to sample dir + must cp -n "$file_path" "$file_path_new"; + #### note path in sample dir log + printf "%s,%s,%s\n" "$n_samp_dd" "$file_hash" "$file_path" \ + >> "$sample_log"; + fi; + ((n_samp++)); + done < <( echo "$list_paths_sample" ); + else + yell "ERROR:Does not exist: $BKFEH_SAMPLE_DIR"; + fi; +}; # save sample of files + main() { # Depends: read_stdin_psarg() v0.0.1, check_depends() local re_dotfile; - declare -a main_dirs; + declare -a dirs_stdin dirs_psarg; declare -a paths_images; declare list_paths_images; check_depends; - # Find settings - find_depth=10; # default: 10 - find_size="10k"; # default: minimum "10k" - #Find files ending in .jpg, .gif, etc. - pattern_find_iregex=".+\(jpg\|jpeg\|gif\|png\|webm\)$"; # update according to `find . -type f | grep -Eo "\.([[:alnum:]])+$" | sort -u` - export find_depth find_size pattern_find_iregex; # export for parallel - - #Populate main_dirs array - ## Read stdin and positional arguments as lines + #Populate dirs_stdin and dirs_psarg arrays + ## Read stdin as lines re_dotfile="^\."; # first char is a dot while read -r line; do + line="$(readlink -e "$line")"; # Check if dir if [[ ! -d "$line" ]]; then echo "ERROR:Not a dir:$line" 1>&2; @@ -231,15 +346,47 @@ main() { echo "ERROR:Is a dotdir:$line" 1>&2; continue fi; - main_dirs+=("$line"); - done < <(read_stdin_psarg "$@"); - - # Catch empty main_dirs array - if [[ "${#main_dirs[@]}" -le 0 ]]; then die "FATAL:No valid directories provided."; fi; + dirs_stdin+=("$line"); + done < <(read_stdin); + ## Read positional arguments as lines + re_dotfile="^\."; # first char is a dot + while read -r line; do + line="$(readlink -e "$line")"; + # Check if dir + if [[ ! -d "$line" ]]; then + echo "ERROR:Not a dir:$line" 1>&2; + continue; + fi; + dir_name="$(basename "$line")"; + # Exclude dotdirs + if [[ "$dir_name" =~ $re_dotfile ]]; then + echo "ERROR:Is a dotdir:$line" 1>&2; + continue + fi; + dirs_psarg+=("$line"); + done < <(read_psarg "$@"); + + # Catch all arrays empty + if [[ "${#dirs_stdin[@]}" -le 0 ]] && [[ "${#dirs_psarg[@]}" -le 0 ]]; then + die "FATAL:No valid directories provided."; + fi; # Generate file list - paths_images+=("$( parallel print_filelist {} ::: "${main_dirs[@]}" )"); # See [1] - + # Find settings + firegex=".+\(jpg\|jpeg\|gif\|png\|webm\)$"; # update according to `find . -type f | grep -Eo "\.([[:alnum:]])+$" | sort -u` + fsize="10k"; # default: minimum "10k" + export firegex fsize ; # export for parallel + ## Call find_filelist() in parallel for positional argument input + if [[ "${#dirs_psarg[@]}" -gt 0 ]]; then + fdepth=10; export fdepth; # 10 for dirs from positional arguments + paths_images+=("$( parallel find_flist {} "$fdepth" "$firegex" "$fsize" ::: "${dirs_psarg[@]}" )"); # See [1] + fi; + ## Call find_filelist() in parallel for stdin input + if [[ "${#dirs_stdin[@]}" -gt 0 ]]; then + fdepth=1; export fdepth; # 1 for dirs from stdin + paths_images+=("$( parallel find_flist {} "$fdepth" "$firegex" "$fsize" ::: "${dirs_stdin[@]}" )"); # See [1] + fi; + # Convert paths_images array into file list for i in "${!paths_images[@]}"; do list_paths_images="$(printf "%s\n%s" "${paths_images[$i]}" "$list_paths_images")"; @@ -252,6 +399,9 @@ main() { # Sort, remove duplicate paths list_paths_images="$(echo "$list_paths_images" | sort -u | tr -s '\n')"; + # Remove paths with dotfiles + list_paths_images="$(echo "$list_paths_images" | grep -viE "/\." )"; + # Write list_paths_images_tmp="/dev/shm/$(date +%Y%m%dT%H%M%S.%N%z)"..feh_paths.txt; must echo -n "$list_paths_images" > "$list_paths_images_tmp"; @@ -260,15 +410,18 @@ main() { yell "STATUS:Built file list in $SECONDS seconds."; # Run feh with filelist - feh --full-screen --auto-zoom --draw-filename --filelist "$list_paths_images_tmp"; + feh --full-screen --auto-zoom --draw-filename --filelist "$list_paths_images_tmp" && \ + must rm "$list_paths_images_tmp" & - # Cleanup - must rm "$list_paths_images_tmp"; + # Save sample to path in env. var. BKFEH_SAMPLE_DIR if set + save_sample "$list_paths_images"; + }; -export -f yell die must read_stdin_psarg print_filelist; +export -f yell die must read_stdin read_psarg find_flist; #==END Define local functions== main "$@"; + # Author: Steven Baltakatei Sandoval # License: GPLv3+