mksparkive.sh revision 1.7.26.1
1 #!/bin/sh -e 2 # $NetBSD: mksparkive.sh,v 1.7.26.1 2008/06/02 13:21:12 mjf Exp $ 3 # 4 # Copyright (c) 2004 The NetBSD Foundation, Inc. 5 # All rights reserved. 6 # 7 # This code is derived from software contributed to The NetBSD Foundation 8 # by Gavan Fantom 9 # 10 # Redistribution and use in source and binary forms, with or without 11 # modification, are permitted provided that the following conditions 12 # are met: 13 # 1. Redistributions of source code must retain the above copyright 14 # notice, this list of conditions and the following disclaimer. 15 # 2. Redistributions in binary form must reproduce the above copyright 16 # notice, this list of conditions and the following disclaimer in the 17 # documentation and/or other materials provided with the distribution. 18 # 19 # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 # POSSIBILITY OF SUCH DAMAGE. 30 # 31 32 # 33 # Creates a spark format archive. Some metadata is included, notably 34 # filetypes, but permissions are not. Filename translation is performed 35 # according to RISC OS conventions. 36 # 37 # This script is intended to provide sufficient functionality to create 38 # an archive for distribution of the NetBSD/acorn32 bootloader which can be 39 # used directly in RISC OS. 40 # 41 42 if [ -z "${TOOL_SPARKCRC}" ] 43 then 44 TOOL_SPARKCRC=sparkcrc 45 fi 46 47 if [ -z "${TOOL_STAT}" ] 48 then 49 TOOL_STAT=stat 50 fi 51 52 if [ -z "${TOOL_MKTEMP}" ] 53 then 54 TOOL_MKTEMP=mktemp 55 fi 56 57 58 # Target byte order is little endian. 59 60 print2() 61 { 62 if [ -z "$1" ] 63 then 64 exit 1 65 fi 66 lowbyte=`expr $1 % 256 | xargs printf %02x` 67 highbyte=`expr $1 / 256 | xargs printf %02x` 68 printf "\x$lowbyte\x$highbyte" 69 } 70 71 print4() 72 { 73 if [ -z "$1" ] 74 then 75 exit 1 76 fi 77 print2 `expr $1 % 65536` 78 print2 `expr $1 / 65536` 79 } 80 81 makeheader() 82 { 83 filename="$1" 84 statfilename="$2" 85 realfilename="$3" 86 filetype=`printf %03s "$4"` 87 compressed="$5" 88 # length is only passed to length4, so we don't need to worry about 89 # extracting only the length here. 90 length=`wc -c "$filename"` 91 eval `${TOOL_STAT} -s "$statfilename"` 92 # centiseconds since 1st Jan 1900 93 timestamp=`expr $st_mtime \* 100 + 220898880000` 94 lowtype=`echo "$filetype" | sed s/.//` 95 hightype=`echo "$filetype" | sed s/..\$//` 96 highdate=`expr $timestamp / 4294967296 | xargs printf %02x` 97 lowdate=`expr $timestamp % 4294967296` 98 99 # Header version number 100 if [ "$compressed" -ne 0 ] 101 then 102 printf \\xff 103 else 104 printf \\x82 105 fi 106 # Filename 107 printf %-13.13s "$realfilename" | tr " ." \\0/ 108 # Compressed file length 109 print4 $length 110 # File date stamp 111 print2 0 112 # File time stamp 113 print2 0 114 # CRC 115 if [ "$compressed" -ne 0 ] 116 then 117 print2 `${TOOL_SPARKCRC} "$statfilename"` 118 else 119 print2 `${TOOL_SPARKCRC} "$filename"` 120 fi 121 # Original file length 122 if [ "$compressed" -ne 0 ] 123 then 124 print4 $st_size 125 else 126 print4 $length 127 fi 128 # Load address (FFFtttdd) 129 printf \\x$highdate 130 printf \\x$lowtype 131 printf \\xf$hightype 132 printf \\xff 133 # Exec address (dddddddd) 134 print4 $lowdate 135 # Attributes 136 # Public read, owner read/write 137 print4 19 138 } 139 140 makearchive() 141 { 142 for file in "$@" 143 do 144 temp=`${TOOL_MKTEMP} -t $progname` || exit 1 145 trap "rm -f $temp" 0 146 # Archive marker 147 printf \\x1a 148 if [ -f "$file" ] 149 then 150 case "$file" in 151 -*) echo "Invalid filename" >&2 152 exit 1 153 ;; 154 *,???) type=`echo "$file" | \ 155 sed "s/.*,\(...\)$/\1/"` 156 filename=`echo "$file" | \ 157 sed "s/,...$//"` 158 ;; 159 *) type=fff 160 filename="$file" 161 ;; 162 esac 163 # The compressed data in a sparkive is the output from 164 # compress, minus the two bytes of magic at the start. 165 # Compress also uses the top bit of the first byte 166 # to indicate its choice of algorithm. Spark doesn't 167 # understand that, so it must be stripped. 168 compress -c "$file" | tail -c +3 >"$temp" 169 size1=`wc -c "$file" | awk '{print $1}'` 170 size2=`wc -c "$temp" | awk '{print $1}'` 171 if [ $size1 -ge $size2 ] 172 then 173 makeheader "$temp" "$file" "$filename" "$type" 1 174 nbits=`dd if="$temp" bs=1 count=1 2>/dev/null| \ 175 od -t d1 | awk '{print $2}'` 176 if [ $nbits -ge 128 ] 177 then 178 nbits=`expr $nbits - 128` 179 fi 180 printf \\x`printf %02x $nbits` 181 tail -c +2 "$temp" 182 else 183 makeheader "$file" "$file" "$filename" "$type" 0 184 cat "$file" 185 fi 186 fi 187 if [ -d "$file" ] 188 then 189 ( 190 cd "$file" 191 makearchive `ls -A` >$temp 192 ) 193 if [ $? -ne 0 ] 194 then 195 exit 1 196 fi 197 makeheader "$temp" "$file" "$file" ddc 0 198 cat "$temp" 199 fi 200 rm -f "$temp" 201 done 202 203 # Archive marker 204 printf \\x1a 205 # Archive terminator 206 printf \\x00 207 } 208 209 progname=`basename $0` 210 211 if [ $# -eq 0 ] 212 then 213 echo "Usage: $progname filename" 214 echo "$progname: Outputs an uncompressed sparkive to stdout." 215 fi 216 217 makearchive "$@" 218
Indexes created Tue Oct 28 12:10:06 GMT 2025