LDP/LDP/users/Peter-Bieringer/make.sh

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#!/bin/bash
#
# (P) & (C) 2011 - 2011 by Dr. Peter Bieringer <pb@bieringer.de>
#
# Wrapper script for HOWTO generator script
#
# Requires: "generate.sh"
#
# Changelog
#
#
# 20110511/PB: use absolute paths, extend error checking
URL_BASE="http://cvs.tldp.org/go.to/LDP/LDP/users/Peter-Bieringer/"
FILE_EN="Linux+IPv6-HOWTO.sgml"
FILE_DE="Linux+IPv6-HOWTO.de.sgml"
FILE_FR="Linux+IPv6-HOWTO.fr.sgml"
FILE_PT_BR="Linux+IPv6-HOWTO.pt_BR.sgml"
options_wget="--quiet"
DIR_BASE="$HOME/howtos"
DIR_DOWNLOAD="$HOME/howtos/download"
DIR_DEST_BASE="/var/www/html/howtos"
## logging
log() {
local level="$1"
shift
printf "%-6s: %s\n" "$level" "$*"
}
## download file
download() {
local url_base="$1"
local file="$2"
if [ -z "$url_base" ]; then
log "ERROR" "'url_base' empty"
return 1
fi
if [ -z "$file" ]; then
log "ERROR" "'file' empty"
return 1
fi
if [ -z "$DIR_DOWNLOAD" ]; then
log "ERROR" "no download directory given"
return 1
fi
if [ ! -d "$DIR_DOWNLOAD" ]; then
log "ERROR" "download directory doesn't exist: $DIR_DOWNLOAD"
return 1
fi
if [ "$force_download" != "1" ]; then
log "NOTICE" "skip download $url_base/$file (use option -d)"
return 0
fi
log "INFO" "start download $url_base/$file to directory $DIR_DOWNLOAD"
wget $options_wget -N -P "$DIR_DOWNLOAD" "$url_base/$file"
local result=$?
if [ $result -eq 0 ]; then
log "INFO" "download successful: $url_base/$file (stored to $DIR_DOWNLOAD)"
else
log "ERROR" "download not successful: $url_base/$file"
fi
return $result
}
## check, whether processing should be started
check() {
local file_download="$1"
local file="$2"
local dir_html="$3"
if [ -z "$file" ]; then
log "ERROR" "'file' empty"
return 1
fi
if [ -z "$file_download" ]; then
log "ERROR" "'file_download' empty"
return 1
fi
if [ -z "$dir_html" ]; then
log "ERROR" "'dir_html' empty"
return 1
fi
log "INFO" "check file: $file"
if [ ! -f "$file_download" ]; then
log "WARN" "no downloaded file available: $file_download"
return 1
fi
if [ ! -f "$file" ]; then
log "NOTICE" "no 'old' file available: $file (copy now)"
cp -p "$file_download" "$file"
if [ $? -ne 0 ]; then
log "ERROR" "can't copy 'new' file to 'old' file: $file_download -> $file"
return 1
fi
return 0
else
if cmp -s "$file_download" "$file"; then
log "INFO" "'old' is identical with 'new' file: $file"
else
log "NOTICE" "'old' is not equal with 'new' file: $file"
cp -p "$file_download" "$file"
if [ $? -ne 0 ]; then
log "ERROR" "can't copy 'new' file to 'old' file: $file_download -> $file"
return 1
fi
return 0
fi
# check contents of destination directory
log "INFO" "check directory: $dir"
if [ ! -d "$dir" ]; then
log "NOTICE" "directory still not exist: $dir"
return 0
fi
local num_files="`find "$dir" -mindepth 1 -maxdepth 1 -type f | wc -l`"
if [ $num_files -eq 0 ]; then
# directory is empty
log "NOTICE" "directory is empty: $dir"
return 0
fi
local num_files_old="`find "$dir" -mindepth 1 -maxdepth 1 -type f ! -newer "$file" | wc -l`"
if [ $num_files_old -ne 0 ]; then
# force regeneration
log "NOTICE" "directory contains old files: $dir ($num_files_old)"
return 0
fi
# 'old' file already exists
if [ "$file" -nt "$file_download" ]; then
log "WARN" "'old' is newer than 'new' file: $file"
return 1
fi
fi
if [ "$force_generate" = "1" ]; then
log "NOTICE" "force regeneration of: $file"
return 0
fi
# nothing to do
log "DEBUG" "no indication for start processing file found: $file"
return 1
}
## process/generate output
process() {
log "INFO" "start processing file: $file"
pushd $DIR_BASE >/dev/null || return 1
./generate.sh "$file"
local result=$?
popd >/dev/null
if [ $result -ne 0 ]; then
log "ERROR" "processing of file not successful: $file"
return 1
fi
log "INFO" "processing of file successful: $file"
}
## copy output
copy() {
local file="$1"
if [ -z "$DIR_DEST_BASE" ]; then
log "ERROR" "destination directory for output not given 'DIR_DEST_BASE'"
fi
if [ ! -d "$DIR_DEST_BASE" ]; then
log "ERROR" "destination directory for output doesn't exist: $DIR_DEST_BASE"
return 1
fi
log "INFO" "start syncing files of master file: $file"
local file_pdf="${file/.sgml/.pdf}"
local file_html="${file/.sgml/.html}"
local dir_html="${file/.sgml}"
local file_base="`basename "${file/.sgml}"`"
local file_dest_pdf="$DIR_DEST_BASE/${file_base}.pdf"
local file_dest_html="$DIR_DEST_BASE/${file_base}.html"
local dir_dest_html="$DIR_DEST_BASE/$file_base"
local file_dest_status="$DIR_DEST_BASE/${file_base}.last"
log "INFO" "copy PDF file: $file_pdf"
cp -p "$file_pdf" "$file_dest_pdf"
if [ $? -ne 0 ]; then
log "ERROR" "can't copy PDF file: $file_pdf"
return 1
fi
if [ ! -f "$file_dest_pdf" ]; then
log "ERROR" "destination PDF file is not a file or doesn't exist: $file_dest_pdf"
return 1
fi
chmod 644 "$file_dest_pdf"
if [ $? -ne 0 ]; then
log "ERROR" "can't adjust permissions of PDF file: $file_dest_pdf"
return 1
fi
log "INFO" "copy HTML file: $file_html"
cp -p "$file_html" "$file_dest_html"
if [ $? -ne 0 ]; then
log "ERROR" "can't copy HTML file: $file_html"
return 1
fi
if [ ! -f "$file_dest_html" ]; then
log "ERROR" "destination HTML file is not a file or doesn't exist: $file_dest_html"
return 1
fi
chmod 644 "$file_dest_html"
if [ $? -ne 0 ]; then
log "ERROR" "can't adjust permissions of HTML file: $file_dest_html"
return 1
fi
if [ ! -d "$dir_html" ]; then
log "ERROR" "source directory for HTML doesn't exist: $dir_html"
return 1
fi
if [ ! -d "$dir_dest_html" ]; then
log "ERROR" "destination directory for HTML doesn't exist: $dir_dest_html"
return 1
fi
if [ ! -w "$dir_dest_html" ]; then
log "ERROR" "destination directory for HTML isn't writable: $dir_dest_html"
return 1
fi
log "INFO" "copy HTML directory: $dir_html -> $dir_dest_html"
rsync --delete -r "$dir_html/" "$dir_dest_html/"
if [ $? -ne 0 ]; then
log "ERROR" "can't sync HTML dir: $dir_html"
return 1
fi
log "INFO" "update status file: $file_dest_status"
touch "$file_dest_status"
if [ $? -ne 0 ]; then
log "ERROR" "can't update status file: $file_dest_status"
return 1
fi
}
## main
main() {
for file in $*; do
download "$URL_BASE" "$file"
if [ $? -ne 0 ]; then
continue
fi
dir="$DIR_BASE/${file/.sgml}"
check "$DIR_DOWNLOAD/$file" "$DIR_BASE/$file" "$dir"
if [ $? -eq 0 ]; then
process "$DIR_BASE/$file"
fi
copy "$DIR_BASE/$file"
done
}
# parse options
while getopts "dg" opt; do
case $opt in
d)
force_download=1
;;
g)
force_download=1
force_generate=1
;;
\?)
echo "Invalid option: -$OPTARG" >&2
;;
esac
done
shift $((OPTIND-1))
case $1 in
'de')
files="$FILE_DE"
;;
'en')
files="$FILE_EN"
;;
'fr')
files="$FILE_FR"
;;
'pt')
files="$FILE_PT_BR"
;;
'all')
files="$FILE_EN $FILE_DE $FILE_FR $FILE_PT_BR"
;;
esac
main $files