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git-sync.sh - v0.0 - Initial commit

Fred authored on03/09/2014 23:33:46
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git-sync.sh
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+#!/bin/bash
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+# Title: git-sync.sh
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+# Version: 0.0
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+# Author: Frédéric CHEVALIER <fcheval@txbiomedgenetics.org>
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+# Created in: 2014-09-03
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+# Modified in:
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+# Licence : GPL v3
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+
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+
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+
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+#======#
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+# Aims #
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+#======#
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+
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+aim="Synchronize files from git server (master branch) on this terminal."
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+
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+
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+
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+#==========#
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+# Versions #
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+#==========#
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+
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+# v0.0 - 2014-09-03: creation
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+
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+
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+
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+#===========#
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+# Functions #
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+#===========#
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+
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+# Dependency test
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+function test_dep {
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+    if [[ ! $(which $1) ]]
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+    then
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+        error "Package $1 is needed. Exiting..." 1
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+    fi
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+}
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+
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+# Usage message
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+function usage {
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+    echo -e "
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+    \e[32m${0##*/}\e[00m -l|--list list -h|--help
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+
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+Aim: $aim
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+
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+Options:
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+    -l, --list      file containing remote path and local path of a file to synchronize.
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+                    The list file must have a unique path pair per line and each path must
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+                    be semi-colon separated. The remote path must be http path.
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+
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+    -h, --help      this message
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+"
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+}
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+
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+
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+# Error message
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+function error {
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+    echo -e "\e[31mError:\e[00m $1"
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+    exit $2
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+}
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+
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+
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+# Warning message
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+function warning {
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+    echo -e "\e[33mWarning:\e[00m $1"
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+}
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+
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+
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+
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+#==============#
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+# Dependencies #
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+#==============#
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+
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+test_dep git
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+
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+
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+
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+#==========================#
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+# Declaration of variables #
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+#==========================#
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+
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+# Options
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+while [[ $# -gt 0 ]]
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+do
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+    case $1 in
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+        -l|--list   ) list="$2" ; shift 2 ;;
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+        -h|--help   ) usage ; exit 0 ;;
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+        *           ) error "Invalid option: $1\n$(usage)\n" 1 ;;
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+    esac
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+done
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+
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+
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+# Check the existence of obligatory options
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+if [[ -z "$list" ]]
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+then
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+    error "The option -l is required. Exiting...\n$(usage)\n" 1
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+fi
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+
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+
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+
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+#============#
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+# Processing #
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+#============#
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+
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+# Check file list
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+if [[ $(awk -F ";" "END {print NF}" "$list") != 2 ]]
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+then
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+    error "The list file "$list" is malformated. Each path pair must be on unique line and each path must be semi-colon (';') separated." 1
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+fi
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+
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+
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+# Synchronization
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+while read line
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+do
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+
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+    # Get paths
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+    mysrc=$(echo "$line" | cut -d ";" -f 1)
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+    mydst=$(echo "$line" | cut -d ";" -f 2)
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+
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+    mydst_tmp="/tmp/${mydst##*/}"
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+
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+    # Download file
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+    wget -O "$mydst_tmp" "$mysrc"
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+
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+    # Check for errors
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+    if [[ $? != 0 ]]
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+    then
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+        warning "${mydst##*/}: An error occur during the downloading. Skipping..."
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+        continue
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+    else
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+        # Compare downloaded file and destination file (update file if need)
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+        if [[ $(md5sum "$mydst_tmp") -ne $(md5sum "$mydst") ]]
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+        then
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+            mv "$mydst_tmp" "$mydst"
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+        else
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+            rm "$mydst_tmp"
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+        fi
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+    fi
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+
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+done < "$list"
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+
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+
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+exit 0