Biblioteca de funēões de manipulaēćo de arquivos CSV para shell script
Publicado por Gabriel Fernandes (śltima atualizaēćo em 18/02/2011)
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Homepage: http://cd2.com.br
Funções de manipulação de arquivos csv em shell script.
Funções para abrir, criar, pegar número de linhas, pegar quantidade de campos, pegar nomes dos campos, adicionar campos, adicionar linha, deletar linha, atualizar linha e outras ainda em desenvolvimento.
Quem quiser contribuir... desde já deixo meus agradecimentos.
Valeu
Gabriel Fernandes
#!/bin/bash ############################################################################ # Fernax - Biblioteca de funcoes de apoio a shell script # # libcsv 0.1 - Funcoes de manipulacao de arquivos CSV # # Copyright (C) 2010 Gabriel Fernandes # # Autor: Gabriel Fernandes <gabriel@duel.com.br> # # # # This program is free software; you can redistribute it and#or modify # # it under the terms of the GNU General Public License as published by # # the Free Software Foundation; either version 2 of the License, or # # (at your option) any later version. # # # # This program is distributed in the hope that it will be useful, # # but WITHOUT ANY WARRANTY; without even the implied warranty of # # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # # GNU General Public License for more details. # # # # You should have received a copy of the GNU General Public License # # along with this program; if not, write to the # # Free Software Foundation, Inc., # # 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. # ############################################################################ csv_openfile () { CSV_FILENAME=$1 CSV_TITLE=$2 CSV_IFS=$3 [ -z "$1" ] && exit 1 [ -z "$2" ] && TITLE="FALSE" [ -z "$3" ] && CSV_IFS=";" if [ -e ${CSV_FILENAME} ] ; then export CSV_FILENAME=${CSV_FILENAME} export CSV_TITLE=${CSV_TITLE} export CSV_IFS=${CSV_IFS} echo ${CSV_FILENAME} return 0 else return 1 fi } csv_createfile () { CSV_FILENAME=$1 CSV_TITLE=$2 CSV_IFS=$3 [ -z "$1" ] && exit 1 [ -z "$2" ] && TITLE="FALSE" [ -z "$3" ] && CSV_IFS=";" touch ${CSV_FILENAME} if [ -e ${CSV_FILENAME} ] ; then export CSV_FILENAME=${CSV_FILENAME} export CSV_TITLE=${CSV_TITLE} export CSV_IFS=${CSV_IFS} echo ${CSV_FILENAME} return 0 else return 1 fi } csv_getnumrows () { CSV_NUM_ROWS=$(cat ${CSV_FILENAME} | wc -l) if [ "${CSV_TITLE}" = "TRUE" ] ; then CSV_NUM_ROWS=$(let CSV_NUM_ROWS-=1) fi if [ "$?" = "0" ] ; then export CSV_NUM_ROWS=${CSV_NUM_ROWS} echo ${CSV_NUM_ROWS}; return 0 else return 1 fi } csv_getnumfields () { [ -z "$CSV_FILENAME" ] && exit 1 [ -z "$CSV_TITLE" ] && TITLE="FALSE" [ -z "$CSV_IFS" ] && CSV_IFS=";" CSV_FIRST_LINE=$(head -n1 ${CSV_FILENAME}) echo ${CSV_FIRST_LINE} > /tmp/character_count.$$ LENGHT=$(echo $CSV_FIRST_LINE | wc -c) let LENGHT-=1 COUNTER=1 CSV_NUM_FIELDS=0 while [ ${COUNTER} -le ${LENGHT} ] ; do CSV_FIRST_LINE=$(cut -c${COUNTER} /tmp/character_count.$$) if [ "${CSV_FIRST_LINE}" == "${CSV_IFS}" ] ; then let CSV_NUM_FIELDS+=1 fi let COUNTER+=1 done if [ "$?" = "0" ] ; then export CSV_NUM_FIELDS=${CSV_NUM_FIELDS} echo ${CSV_NUM_FIELDS}; return 0 else return 1 fi } csv_getfieldtitle () { CSV_FIELD=$1 [ -z "$CSV_FILENAME" ] && exit 1 [ -z "$CSV_TITLE" ] && TITLE="FALSE" [ -z "$CSV_IFS" ] && CSV_IFS=";" if [ "${CSV_TITLE}" = "TRUE" ] ; then CSV_FIRST_LINE=$(head -n1 ${CSV_FILENAME}) NUM_FIELDS=$(csv_getnumfields) FIELDS="" if [ -z "$CSV_FIELD" ] ; then for COUNTER in $(seq ${NUM_FIELDS}); do if [ "${FIELDS}" = "" ] ; then FIELDS=${COUNTER} else FIELDS="${FIELDS},${COUNTER}" fi done else FIELDS="${CSV_FIELD}" fi CSV_TITLE=$(echo ${CSV_FIRST_LINE} | cut -d "${CSV_IFS}" -f${FIELDS}) if [ "$?" = "0" ] ; then export CSV_TITLE=${CSV_TITLE} echo ${CSV_TITLE} return 0 else return 1 fi else return 1 fi } csv_addfield () { NUM_FIELD=$1 [ -z "$1" ] && NUM_FIELD=$(csv_getnumfields) } #csv_delfield () #{ #} csv_addrow () { [ -z "$1" ] && exit 1 [ -z "$CSV_FILENAME" ] && exit 1 [ -z "$CSV_TITLE" ] && TITLE="FALSE" [ -z "$CSV_IFS" ] && CSV_IFS=";" CSV_ROW="" while [ "$1" != "" ]; do if [ ${CSV_ROW} = "" ] ; then CSV_ROW="${1}${CSV_IFS}" else CSV_ROW="${CSV_ROW}${1}${CSV_IFS}" fi shift done echo "${CSV_ROW}" >> "${CSV_FILENAME}" return $? } csv_delrow () { # params: chave1 chave2 # problema: chaves sempre em primeiro no arquivo [ -z "$1" ] && exit 1 [ -z "$CSV_FILENAME" ] && exit 1 [ -z "$CSV_TITLE" ] && TITLE="FALSE" [ -z "$CSV_IFS" ] && CSV_IFS=";" CSV_ROW_KEYS="" while [ "$1" != "" ]; do if [ ${CSV_ROW_KEYS} = "" ] ; then CSV_ROW_KEYS="${1}${CSV_IFS}" else CSV_ROW_KEYS="${CSV_ROW_KEYS}${1}${CSV_IFS}" fi shift done CSV_ID_ROW_DELETE=$(grep -n "^${CSV_ROW_KEYS}" "${CSV_FILENAME}" | cut -d : -f 1) sed -i~ ${CSV_ID_ROW_DELETE}d "${CSV_FILENAME}" return $? } csv_updaterow () { # params: chave1 chave2 ... SET 5 novoValor # problema: chaves sempre em primeiro no arquivo [ -z "$1" ] && exit 1 [ -z "$CSV_FILENAME" ] && exit 1 [ -z "$CSV_TITLE" ] && TITLE="FALSE" [ -z "$CSV_IFS" ] && CSV_IFS=";" CSV_ROW_KEYS="" while [ "$1" != "SET" ]; do if [ "${CSV_ROW_KEYS}" = "" ] ; then CSV_ROW_KEYS="${1}${CSV_IFS}" else CSV_ROW_KEYS="${CSV_ROW_KEYS}${1}${CSV_IFS}" fi shift done CSV_ID_FIELD_UPDATE="$2" CSV_VAL_FIELD_UPDATE="$3" CSV_ID_ROW_FOR_UPDATE=$(grep -n "^${CSV_ROW_KEYS}" "${CSV_FILENAME}" | cut -d : -f 1) CSV_ROW_FOR_UPDATE=$(grep "^${CSV_ROW_KEYS}" "${CSV_FILENAME}") CSV_NUM_FIELDS=$(csv_getnumfields) CSV_ROW_UPDATED="" for ((I=1;I<=${CSV_NUM_FIELDS};I++)) ; do if [ "${CSV_ID_FIELD_UPDATE}" != "${I}" ] ; then CSV_ROW_FIELD_TEMP=$(echo "${CSV_ROW_FOR_UPDATE}" | cut -d "${CSV_IFS}" -f ${I}) if [ "${CSV_ROW_UPDATED}" = "" ] ; then CSV_ROW_UPDATED="${CSV_ROW_FIELD_TEMP}${CSV_IFS}" else CSV_ROW_UPDATED="${CSV_ROW_UPDATED}${CSV_ROW_FIELD_TEMP}${CSV_IFS}" fi else CSV_ROW_UPDATED="${CSV_ROW_UPDATED}${CSV_VAL_FIELD_UPDATE}${CSV_IFS}" fi done; sed -i ${CSV_ID_ROW_FOR_UPDATE}d "${CSV_FILENAME}" echo "${CSV_ROW_UPDATED}" >> "${CSV_FILENAME}" return $? } #csv_sortby () #{ #} #csv_locate () #{ #}
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