Como posso criar uma GUI wget com várias barras de progresso?

21

Estou escrevendo meu próprio script para fazer o download de vários itens (simultaneamente, um item por comando) usando wget e preciso de uma barra de progresso. Eu atualmente utilizo zenity --progress para minhas barras de progresso, mas o problema é que ele gera várias barras de progresso durante o download.

O que eu quero alcançar é algo semelhante ao diálogo de transferência de arquivos no Nautilus:

Alguém pode me indicar a direção certa de qual (is) programa (s) ou idioma (s) que conseguirão isso?

NOTA: Eu só tenho conhecimento básico de scripts de shell, não muito mais.

    
por Rey Leonard Amorato 08.05.2014 / 20:42
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1 resposta

28

Solução usando YAD

Visão geral

O Zenity não foi atualizado em muito tempo. Felizmente há um fork chamado YAD com muitos recursos adicionais. Ainda não chegou nos repositórios oficiais, mas você pode instalá-lo a partir de um PPA webupd8:

sudo add-apt-repository ppa:webupd8team/y-ppa-manager
sudo apt-get update
sudo apt-get install yad

Um dos recursos adicionados ao YAD é um diálogo com várias barras de progresso. Aqui está um trecho do manual do YAD sobre várias barras de progresso:

Multi progress bars dialog options
--bar=LABEL[:TYPE]
  Add progress bar. LABEL is a text label for progress bar. TYPE is a progress bar type. Types are:
  NORM for normal progress bar, RTL for inverted progress bar and PULSE for pulsate progress bar.
--vertical
  Set vertical orientation of progress bars.
--align=TYPE
  Set alignment of bar labels. Possible types are left, center or right. Default is left.

Initial values for bars set as extra arguments. Each lines with progress data passed to stdin must be started
from N: where N is a number of progress bar. Rest is the same as in progress dialog.

Portanto, um script muito simples com várias barras de progresso pode ter esta aparência:

for i in {1..100}; do
   printf "1:$i\n2:$i\n3:$i\n"
   sleep 0.2
done | yad --multi-progress --bar="Bar 1":NORM --bar="Bar 2":NORM --bar="Bar 3":NORM

É assim que o resultado seria:

Podemosadicionardescriçõesàsbarrascom#:

for i in {1..100}; do printf "1:$i\n2:$i\n3:$i\n" printf "1:#Progress 1 is at $i percent\n2:#Progress 2 is at $i percent\n3:#Progress 3 is at $i percent\n" sleep 0.2 done | yad --multi-progress --bar="Bar 1":NORM --bar="Bar 2":NORM --bar="Bar 3":NORM

Resultado:

Sequisermosimplementarissoemumscriptdedownloaddowget,teremosquefazeralgumascoisasprimeiro:

  • encontreumamaneiradeextrairoprogressododownloadeoutrosdadosinteressantesdasaídadowget
  • encontreumamaneiradeiterarváriosarquivos
  • encontreumamaneiradepassartodasasinformaçõesquetemosparaumúnicodiálogoyad

Euacheiesteprojetobastanteinteressante,entãoeumesenteieescreviumscriptquedeveriafazertodosositensacima.

yad_wget

Vejaoqueeucriei:

#!/bin/bash # NAME: yad_wget # VERSION: 0.2 # AUTHOR: (c) 2014 Glutanimate # DESCRIPTION: graphical frontend to wget in form of a yad script # FEATURES: - display progress of multiple simultaneous downloads # - set maximum number of simultaneous downloads # DEPENDENCIES: yad # # Install yad on Ubuntu with: # # sudo add-apt-repository ppa:webupd8team/y-ppa-manager # sudo apt-get update # sudo apt-get install yad # # LICENSE: GNU GPLv3 (http://www.gnu.de/documents/gpl-3.0.en.html) # # NOTICE: THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. # EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES # PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR # IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY # AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND # PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, # YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. # # IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY # COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS # PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, # INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE # THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED # INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE # PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER # PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. # # USAGE: yad_wget <space-delimited URLs> # Closing the yad dialog will terminate all downloads in progress # Variables and settings MAXDLS="5" # set maximum number of simultaneous downloads URILIST="$@" # gets list of URIs from stdin USAGE="$0 <space-delimited URLs>" # Set GUI variables up TITLE="YAD wget downloader" # dialog title TEXT="<b>Downloads</b> in progress:" # dialog text ICON="emblem-downloads" # window icon (appears in launcher) IMAGE="browser-download" # window image (appears in dialog) #URILIST="http://proof.ovh.net/files/100Mb.dat http://speedtest.wdc01.softlayer.com/downloads/test10.zip http://cachefly.cachefly.net/100mb.test" # Usage checks if [[ -z "$URILIST" ]] then echo "Error: No arguments provided" echo "Usage: $USAGE" exit 1 fi # download file and extract progress, speed and ETA from wget # we use sed regex for this # source: http://ubuntuforums.org/showthread.php?t=306515&page=2&p=7455412#post7455412 # modified to work with different locales and decimal point conventions download(){ wget "$1" 2>&1 | sed -u \ "s/.* \([0-9]\+%\)\ \+\([0-9,.]\+.\) \(.*\)/$2:\n$2:# Downloading at \/s, ETA /" RET_WGET="${PIPESTATUS[0]}" # get return code of wget if [[ "$RET_WGET" = 0 ]] # check return code for errors then echo "$2:100%" echo "$2:#Download completed." else echo "$2:#Download error." fi } # compose list of bars for yad for URI in $URILIST; do # iterate through all URIs FILENAME="${URI##*/}" # extract last field of URI as filename YADBARS="$YADBARS --bar=$FILENAME:NORM" # add filename to the list of URIs done IFS=" " COUNTER="1" DYNAMIC_COUNTER="1" # main # iterate through all URIs, download them in the background and # pipe all output simultaneously to yad # source: http://pastebin.com/yBL2wjaY for URI in $URILIST; do if [[ "$DYNAMIC_COUNTER" = "$MAXDLS" ]] # only download n files at a time then download "$URI" "$COUNTER" # if limit reached wait until wget complete DYNAMIC_COUNTER="1" # before proceeding (by not sending download() to bg) else download "$URI" "$COUNTER" & # pass URI and URI number to download() DYNAMIC_COUNTER="$[$DYNAMIC_COUNTER+1]" fi COUNTER="$[$COUNTER+1]" # increment counter done | yad --multi-progress --auto-kill $YADBARS --title "$TITLE" \ --text "$TEXT" --window-icon "$ICON" --image "$IMAGE" # ↑ launch yad multi progress-bar window

E isso é o que parece:

Certifique-se de ler todos os comentários para descobrir como o script funciona e, caso tenha alguma dúvida, não hesite em perguntar nos comentários abaixo.

Editar:

Eu adicionei suporte para definir o número máximo de downloads simultâneos. Por exemplo. para MAXDLS="5" :

    
por Glutanimate 11.05.2014 / 02:42
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