[3c10176] | 1 | #!/bin/bash
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| 2 | #
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| 3 | # $Id$
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| 4 | #
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| 5 |
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[e576789] | 6 | # A string of spaces for indenting:
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[3c10176] | 7 | declare -a spaceSTR=" "
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[e576789] | 8 | declare -a exchange_triplet
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| 9 |
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| 10 | # In case we find a cirdular dependency, it has the form :
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| 11 | # parent->dependency_0->...->dependency_n->dependency_0
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| 12 | # If we want to build dependency_n before dependency_0,
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| 13 | # no problem: we just prune the tree at dependency_n.
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| 14 | # If we want to build first dependency_0, we need to
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| 15 | # put dependency_n as a dependency of parent. The triplet
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| 16 | # above shall contain (parent dependency_0 dependency_n)
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[3c10176] | 17 |
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| 18 | #----------------------------#
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| 19 | generate_dependency_tree() { #
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| 20 | #----------------------------#
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| 21 | : <<inline_doc
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[e576789] | 22 | function: Create a subtree of the dependency tree
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| 23 | (recursive function)
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| 24 | input vars: $1 : file with a list of targets
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| 25 | the first line of the file is an array
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| 26 | of links
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| 27 | externals: vars: BLFS_XML
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[3c10176] | 28 | DEP_LEVEL
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[e576789] | 29 | modifies: vars: none
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[3c10176] | 30 | returns: nothing
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[e576789] | 31 | output: files: for each pkg with dependencies in $1,
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| 32 | a file pkg.dep and its dependencies
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[3c10176] | 33 | on error: nothing
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| 34 | on success: nothing
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| 35 | inline_doc
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| 36 |
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[e576789] | 37 | local DepFile=$1
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| 38 | local -a rootlink
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| 39 | local -a otherlink
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| 40 | local -i depth
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| 41 | local -i count=0
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| 42 | local id_of_dep
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| 43 | local parent
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| 44 | local lines_to_remove=
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| 45 | local srootlink
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| 46 | local dep_level
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| 47 |
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| 48 | {
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| 49 | # BEWARE : the order of options matters : read -a -u6 rootlink hangs forever
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| 50 | # (actually, the doc says -a array -u fd)
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| 51 | # We use fd number 6 for input from DepFile, because we need 0 for user input
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| 52 | read -u6 -a rootlink
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| 53 | depth=${#rootlink[*]}
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| 54 | dep_level=$DEP_LEVEL
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| 55 | if (( $DEP_LEVEL > 2 )) && (( $depth > 1 )); then dep_level=2; fi
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| 56 | srootlink="${rootlink[*]} "
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| 57 | # start of Depfile
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| 58 | echo -en "\nNode: $depth${spaceSTR:0:$depth}${RED}$DepFile${OFF}"
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| 59 |
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| 60 | while read -u6 id_of_dep; do
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| 61 | # count entries in file
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| 62 | (( count++ ))
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| 63 | # Has this entry already been seen?
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| 64 | if [ -f ${id_of_dep}.dep ]; then # found ${id_of_dep}.dep already in tree
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| 65 | otherlink=($(head -n 1 ${id_of_dep}.dep))
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| 66 | if [ -z "${otherlink[*]}" ]
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| 67 | then echo otherlink empty for $id_of_dep.dep
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| 68 | echo This should not happen, but happens to happen...
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| 69 | exit 1
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| 70 | fi
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| 71 | # Do not use "${rootlink[*]}" =~ "${otherlink[*]}": case rootlink=(1 11)
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| 72 | # and otherlink=(1 1)
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| 73 | if [[ ${srootlink#"${otherlink[*]} "} != ${srootlink} ]]; then # circular dep
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| 74 | # First look for the other parent of this dependency.
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| 75 | # The parent has the same link without the last entry.
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| 76 | # We do not need otherlink anymore so just destroy the last element
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| 77 | unset otherlink[${#otherlink[*]}-1]
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| 78 | parent=$(grep ^"${otherlink[*]}"\$ -l *)
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| 79 | parent=${parent%.dep}
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| 80 | echo -en "\nCirc: $depth${spaceSTR:0:$depth}${BLUE}Circular dependency detected:${OFF}"
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| 81 | echo -en "\nCirc: $depth${spaceSTR:0:$depth}${BOLD}${id_of_dep}${OFF} is a dependency \
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| 82 | of ${BOLD}${parent}${OFF}"
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| 83 | echo -en "\nCirc: $depth${spaceSTR:0:$depth}${BOLD}${DepFile%.dep}${OFF} is a dependency \
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| 84 | of ${BOLD}${id_of_dep}${OFF}"
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| 85 | echo -en "\nCirc: $depth${spaceSTR:0:$depth}${BOLD}${id_of_dep}${OFF} is a dependency \
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| 86 | of ${BOLD}${DepFile%.dep}${OFF}"
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| 87 | # If idofdep is the parent of DepFile, we can exchange them if required
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| 88 | # if grep -q ${DepFile%.dep} ${id_of_dep}.dep; then
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| 89 | # we propose exchange always
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| 90 | echo -en "\nCirc: $depth${spaceSTR:0:$depth}Do you want to build ${id_of_dep} first? yes/no (no):"
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| 91 | read ANSWER
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| 92 | if [ x$ANSWER = "xyes" ] ; then # exchange:
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| 93 | # set triplet and return 1
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| 94 | exchange_triplet=($parent $id_of_dep ${DepFile%.dep})
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| 95 | return 1
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| 96 | else # no exchange: prune
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| 97 | lines_to_remove="$lines_to_remove $id_of_dep"
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| 98 | fi
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| 99 | # else
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| 100 | # lines_to_remove="$lines_to_remove $id_of_dep"
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| 101 | # fi
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| 102 | else # not circular: prune
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| 103 | lines_to_remove="$lines_to_remove $id_of_dep"
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| 104 | fi
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| 105 | continue
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[3c10176] | 106 | fi
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[e576789] | 107 | flag=true
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| 108 | while [ $flag = true ]; do
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| 109 | flag=false
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| 110 | xsltproc --stringparam dependencies ${dep_level} \
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| 111 | --stringparam idofdep $id_of_dep \
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| 112 | -o ${id_of_dep}.dep \
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| 113 | ../xsl/dependencies.xsl ../packages.xml
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| 114 |
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| 115 | if [[ -f ${id_of_dep}.dep ]]; then
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| 116 | sed -i "1i${rootlink[*]} $count" ${id_of_dep}.dep
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| 117 | generate_dependency_tree ${id_of_dep}.dep
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| 118 | # Test return value, in case we exchange dependencies
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| 119 | case $? in
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| 120 | 0) # Normal return
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| 121 | ;;
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| 122 | 1) # We are backing up to parent
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| 123 | if [[ ${exchange_triplet} == ${DepFile%.dep} ]]
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| 124 | then tree_erase ${id_of_dep}.dep
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| 125 | # Just doing a sed -i "s@${id_of_dep}@${exchange_triplet[2]}@" $DepFile
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| 126 | # is not good if $DepFile contains several times the same line
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| 127 | # so first find the first line and then sed
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| 128 | lineno=$(sed -n /${id_of_dep}/= $DepFile | head -n1)
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| 129 | sed -i "${lineno}s@${id_of_dep}@${exchange_triplet[2]}@" $DepFile
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| 130 | id_of_dep=${exchange_triplet[2]}
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| 131 | flag=true
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| 132 | else
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| 133 | # echo backing up to ${exchange_triplet} at ${DepFile%.dep}
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| 134 | return 1
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| 135 | fi
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| 136 | ;;
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[3c10176] | 137 | esac
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[e576789] | 138 | else
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| 139 | echo "${rootlink[*]} $count" > ${id_of_dep}.dep
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[3c10176] | 140 | fi
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| 141 | done
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[e576789] | 142 | done
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| 143 | echo -en "\n End: $depth${spaceSTR:0:$depth}${GREEN}$DepFile${OFF}"
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| 144 | } 6<$DepFile
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| 145 | # It may happen that a file is created with several times
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| 146 | # the same line. Normally, all those lines but one
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| 147 | # would be flagged to be removed (or all of them if
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| 148 | # the dependency appeared before). a simple sed /$line/d
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| 149 | # destroys all the lines. We should instead remove
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| 150 | # only one for each appearance of it in lines_to_remove.
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| 151 | # so first get the number of first line and then delete
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| 152 | # that line
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| 153 | for line in $lines_to_remove
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| 154 | do lineno=$(sed -n /^$line\$/= $DepFile | head -n1)
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| 155 | sed -i ${lineno}d $DepFile
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| 156 | done
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| 157 | return 0
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| 158 | }
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[3c10176] | 159 |
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[e576789] | 160 | #---------------#
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| 161 | tree_browse() { #
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| 162 | #---------------#
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| 163 | local file=$1
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| 164 | local f
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| 165 |
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| 166 | #echo file=$file
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| 167 | for f in $(grep '[^0-9 ]' $file); do
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| 168 | # echo f=$f
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| 169 | if grep -q '[^0-9 ]' ${f}.dep ; then
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| 170 | tree_browse ${f}.dep
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[3c10176] | 171 | fi
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[e576789] | 172 | echo $f
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| 173 | done
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| 174 | }
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[3c10176] | 175 |
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[e576789] | 176 | #--------------#
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| 177 | tree_erase() { #
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| 178 | #--------------#
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| 179 | local file=$1
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| 180 | local f
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| 181 | local -a rootlink
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| 182 | local -a rootlink2
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| 183 |
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| 184 | #echo file=$file
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| 185 | rootlink=($(head -n1 $file))
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| 186 | for f in $(grep '[^0-9 ]' $file); do
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| 187 | # echo " f"=$f
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| 188 | if [ -f ${f}.dep ]; then
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| 189 | rootlink2=($(head -n1 ${f}.dep))
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| 190 | if [[ "${rootlink2[*]}" =~ "${rootlink[*]}" ]] ; then
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| 191 | tree_erase ${f}.dep
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| 192 | fi
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| 193 | fi
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| 194 | done
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| 195 | rm -f $file
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[3c10176] | 196 | }
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