| [3c10176] | 1 | #!/bin/bash
|
|---|
| 2 | #
|
|---|
| 3 |
|
|---|
| [2140f22] | 4 | #-----------------------------------------------------------------------------#
|
|---|
| 5 | # This is a set of (recursive) functions for manipulating a dependency graph. #
|
|---|
| 6 | # We use algorithms and definitions from chapter 4 (mainly section 4.2) of #
|
|---|
| 7 | # https://algs4.cs.princeton.edu/. The graph we manipulate is the directed #
|
|---|
| 8 | # graph of the dependencies: nodes are packages in the BLFS book. A node A is #
|
|---|
| 9 | # connected to a node B if package A depends on B. A topological order (rev- #
|
|---|
| 10 | # erted) is exactly what we want for a build order. But a topological order #
|
|---|
| 11 | # only exists if the graph is acyclic. We'll therefore have to remove cycles. #
|
|---|
| 12 | # There are a number of other features we want to consider: #
|
|---|
| 13 | # - edges are weighted according to the dependency requirement: #
|
|---|
| 14 | # 1 for required #
|
|---|
| 15 | # 2 for recommended #
|
|---|
| 16 | # 3 for optional #
|
|---|
| 17 | # 4 for external #
|
|---|
| 18 | # We should consider only edges with weight lower or equal to that #
|
|---|
| 19 | # specified by the user, but see below. #
|
|---|
| 20 | # - we do not want to build the whole book. The user specifies a set of #
|
|---|
| 21 | # packages, and we have to consider only nodes reachable from this set #
|
|---|
| 22 | # using edges of weight not exceeding the specified weight. #
|
|---|
| 23 | # - when doing the topological sort, we want to consider all the edges and #
|
|---|
| 24 | # not only those not exceeding the specified weight: If a package A in the #
|
|---|
| 25 | # reachable subgraph depends optionally on another package B in the same #
|
|---|
| 26 | # subgraph, we want to build B before A. But this means we'll have to #
|
|---|
| 27 | # remove cycles for all weights. #
|
|---|
| 28 | # - dependencies have another qualifier: before or after. The problem: if a #
|
|---|
| 29 | # package A depends on B with an "after" qualifier, and a package C depends #
|
|---|
| 30 | # on A with a "before" qualifier, C may need B to be able to use A. So the #
|
|---|
| 31 | # only safe way to consider "after" qualifiers is to consider that they are #
|
|---|
| 32 | # "before" deps for any parent of the packages considered. #
|
|---|
| 33 | # We'll therefore have a 3 pass procedure. First build the set of nodes #
|
|---|
| 34 | # reachable from the root set. Second, remove dangling edges (those pointing #
|
|---|
| 35 | # to packages outside the node set), and move "after" edges to "before" edges #
|
|---|
| 36 | # originating from the parents. Third remove cycles and generate a #
|
|---|
| 37 | # topological sort. #
|
|---|
| 38 | # #
|
|---|
| 39 | # TODO: document each pass
|
|---|
| 40 | # Data layout: #
|
|---|
| 41 | # TODO: needs also to document the .tree files, and the "f" qualifier
|
|---|
| 42 | # #
|
|---|
| 43 | # A node of the tree is represented by a text file <nodeName>.dep. Each edge #
|
|---|
| 44 | # starting from this node is represented by a line in this file. We keep #
|
|---|
| 45 | # those files in the same directory. We introduce a special node named root, #
|
|---|
| 46 | # whose edges point to the list of nodes requested by the user. Each line #
|
|---|
| 47 | # contains three fields: #
|
|---|
| 48 | # - the weight of the edge #
|
|---|
| 49 | # - the "before" (b) or "after" (a) qualifier #
|
|---|
| 50 | # - the name of the destination of the edge #
|
|---|
| [7dc8595] | 51 | # #
|
|---|
| [2140f22] | 52 | # TODO: The following is obsolete
|
|---|
| [d7c07e0] | 53 | # Circular dependencies: #
|
|---|
| [7dc8595] | 54 | # #
|
|---|
| [d7c07e0] | 55 | # In case we find a cirdular dependency, it has the form : #
|
|---|
| 56 | # parent->dependency_0->...->dependency_n->dependency_0 #
|
|---|
| 57 | # If we want to build dependency_n before dependency_0, no problem: #
|
|---|
| 58 | # we just prune the tree at dependency_n. If we want to build first #
|
|---|
| 59 | # dependency_0, we need to put dependency_n as a dependency of parent, #
|
|---|
| 60 | # then erase and rebuild the subtree from there. Now, we may have met #
|
|---|
| 61 | # another circular dependency in the subtree, and erasing the tree makes #
|
|---|
| 62 | # us forget the decision which was made. So, after first generating the #
|
|---|
| 63 | # list of dependencies from packages.xml, we keep the generated list in #
|
|---|
| 64 | # a file <nodeName>.odep, which we modify according to the decision which #
|
|---|
| 65 | # was made. #
|
|---|
| [e4b1293] | 66 | #---------------------------------------------------------------------------#
|
|---|
| 67 |
|
|---|
| 68 | # Global variables:
|
|---|
| [e576789] | 69 | # A string of spaces for indenting:
|
|---|
| [3c10176] | 70 | declare -a spaceSTR=" "
|
|---|
| [2140f22] | 71 | # When we are backing up from a circular dependency, `parentNode'
|
|---|
| 72 | # contains the node which has an edge entering the cycle
|
|---|
| 73 | declare parentNode
|
|---|
| [3c10176] | 74 |
|
|---|
| [2140f22] | 75 | #---------------------#
|
|---|
| 76 | generate_subgraph() { #
|
|---|
| 77 | #---------------------#
|
|---|
| [3c10176] | 78 | : <<inline_doc
|
|---|
| [2140f22] | 79 | function: Create a subgraph of all the nodes reachable from the node
|
|---|
| 80 | represented by the file whose name is $1. The edges considered
|
|---|
| 81 | are those with maximal weight DEP_LEVEL (recursive function).
|
|---|
| 82 | input vars: $1 : file name corresponding to the node whose edges will be
|
|---|
| 83 | followed for the DFS
|
|---|
| 84 | $2 : weight of the edge leading to this node
|
|---|
| 85 | $3 : depth (root is 1)
|
|---|
| 86 | $4 : qualifier (a for after, b for before)
|
|---|
| [7ac11f0] | 87 | externals: vars: DEP_LEVEL contains 1 if we want to build the
|
|---|
| 88 | tree only for required dependencies,
|
|---|
| 89 | 2 if we want also recommended ones,
|
|---|
| [2140f22] | 90 | 3 if we want also optional ones, but only
|
|---|
| 91 | for the requested packages,
|
|---|
| 92 | 4 if we want all the dependencies
|
|---|
| [7ac11f0] | 93 | MAIL_SERVER contains the name of the MTA we want to use.
|
|---|
| 94 | files: ../xsl/dependencies.xsl: stylesheet for creating the
|
|---|
| 95 | .dep files
|
|---|
| [e91a15d] | 96 | ../packages.xml: File containing packages id
|
|---|
| [7ac11f0] | 97 | and dependencies
|
|---|
| [2140f22] | 98 | returns: 0 if the tree has been successfully created
|
|---|
| 99 | output: files: for each node reachable from $1, a file <node>.dep.
|
|---|
| 100 | on error: nothing
|
|---|
| 101 | on success: nothing
|
|---|
| 102 | inline_doc
|
|---|
| 103 |
|
|---|
| 104 | local depFile=$1
|
|---|
| 105 | local -i weight=$2
|
|---|
| 106 | local -i depth=$3
|
|---|
| 107 | local qualifier=$4
|
|---|
| 108 | local -i spacing=0
|
|---|
| 109 | local priostring
|
|---|
| 110 | local buildstring
|
|---|
| 111 | local id_of_dep
|
|---|
| 112 | local prio_of_dep
|
|---|
| 113 | local build_of_dep
|
|---|
| 114 | local dep_level
|
|---|
| 115 |
|
|---|
| 116 | if (( depth < 10 )); then spacing=1; fi
|
|---|
| 117 | case $weight in
|
|---|
| 118 | 1) priostring=required ;;
|
|---|
| 119 | 2) priostring=recommended ;;
|
|---|
| 120 | 3) priostring=optional ;;
|
|---|
| 121 | esac
|
|---|
| 122 | case $qualifier in
|
|---|
| 123 | a) buildstring=runtime ;;
|
|---|
| 124 | b) buildstring= ;;
|
|---|
| 125 | esac
|
|---|
| 126 | dep_level=$DEP_LEVEL
|
|---|
| 127 | if [ "$dep_level" = 3 ] && [ "$depth" -gt 2 ]; then dep_level=2; fi
|
|---|
| 128 | if [ "$dep_level" -gt 3 ]; then dep_level=3; fi
|
|---|
| 129 | echo -en "\nNode: $depth${spaceSTR:0:$(( depth + spacing ))}${RED}${depFile%.dep}${OFF} $priostring $buildstring"
|
|---|
| 130 |
|
|---|
| 131 | depth=$(( depth + 1 ))
|
|---|
| 132 | if (( depth < 10 )); then spacing=1; else spacing=0; fi
|
|---|
| 133 | # Start of loop
|
|---|
| 134 | {
|
|---|
| 135 | while read prio_of_dep build_of_dep id_of_dep; do
|
|---|
| [e030049] | 136 | case $prio_of_dep in
|
|---|
| [2140f22] | 137 | 1) priostring=required ;;
|
|---|
| 138 | 2) priostring=recommended ;;
|
|---|
| 139 | 3) priostring=optional ;;
|
|---|
| 140 | 4) priostring=external ;;
|
|---|
| [e030049] | 141 | esac
|
|---|
| 142 | case $build_of_dep in
|
|---|
| [2140f22] | 143 | a) buildstring=runtime ;;
|
|---|
| 144 | b) buildstring= ;;
|
|---|
| [e030049] | 145 | esac
|
|---|
| 146 | # Has this entry already been seen?
|
|---|
| 147 | # We have a special case here: if the entry has been seen at depth > 2
|
|---|
| 148 | # and now depth=2 and DEP_LEVEL=3, optional deps have not been processed.
|
|---|
| 149 | # If this is the case, just consider it has not been seen.
|
|---|
| [2140f22] | 150 | if [ -f ${id_of_dep}.dep ] ; then
|
|---|
| [e030049] | 151 | case $depth$DEP_LEVEL in
|
|---|
| 152 | 23) ;;
|
|---|
| 153 | *)
|
|---|
| [2140f22] | 154 | # Just display it and proceed.
|
|---|
| [e030049] | 155 | echo -en "\nEdge: $depth${spaceSTR:0:$((depth + spacing))}${MAGENTA}${id_of_dep}${OFF} $priostring $buildstring"
|
|---|
| 156 | continue
|
|---|
| 157 | ;;
|
|---|
| 158 | esac
|
|---|
| [2140f22] | 159 | fi
|
|---|
| 160 | # Is the weight higher than requested?
|
|---|
| 161 | if [ "$prio_of_dep" -gt $dep_level ]; then
|
|---|
| 162 | # Just display it and proceed.
|
|---|
| 163 | echo -en "\n Out: $depth${spaceSTR:0:$((depth + spacing))}${YELLOW}${id_of_dep}${OFF} $priostring $buildstring"
|
|---|
| 164 | continue
|
|---|
| 165 | fi
|
|---|
| 166 | # Otherwise, let's build the corresponding subgraph.
|
|---|
| 167 | xsltproc --stringparam idofdep "$id_of_dep" \
|
|---|
| 168 | --stringparam MTA "$MAIL_SERVER" \
|
|---|
| 169 | -o ${id_of_dep}.dep \
|
|---|
| 170 | ../xsl/dependencies.xsl ../packages.xml
|
|---|
| 171 |
|
|---|
| 172 | if [[ -s ${id_of_dep}.dep ]]; then # this dependency has dependencies
|
|---|
| 173 | generate_subgraph ${id_of_dep}.dep $prio_of_dep $depth $build_of_dep
|
|---|
| 174 | else # id_of_dep has no dependencies, just touch the file and display
|
|---|
| 175 | touch ${id_of_dep}.dep
|
|---|
| 176 | echo -en "\nLeaf: $depth${spaceSTR:0:$((depth + spacing))}${CYAN}${id_of_dep}${OFF} $priostring $buildstring"
|
|---|
| 177 | fi
|
|---|
| 178 | done
|
|---|
| 179 | } <$depFile
|
|---|
| 180 | depth=$(( depth - 1 ))
|
|---|
| 181 | if (( depth < 10 )); then spacing=1; else spacing=0; fi
|
|---|
| 182 | echo -en "\n End: $depth${spaceSTR:0:$((depth + spacing))}${GREEN}${depFile%.dep}${OFF}"
|
|---|
| 183 | return 0
|
|---|
| 184 | }
|
|---|
| 185 |
|
|---|
| 186 | #-----------#
|
|---|
| 187 | path_to() { #
|
|---|
| 188 | #-----------#
|
|---|
| 189 | : <<inline_doc
|
|---|
| 190 | function: check whether there is a path from $1 to $2 on the graph
|
|---|
| 191 | input vars: $1 contains the filename of the starting node.
|
|---|
| 192 | $2 contains the name of the node to reach
|
|---|
| 193 | $3 contains the weight above which we do not want to
|
|---|
| 194 | follow an edge
|
|---|
| 195 | "seen" (global) contains the list of already seen nodes
|
|---|
| 196 | returns: 0 if the node has been found
|
|---|
| 197 | 1 if not
|
|---|
| 198 | on error: nothing
|
|---|
| 199 | on success: nothing
|
|---|
| 200 | inline_doc
|
|---|
| 201 | local start=$1
|
|---|
| 202 | local seek=$2
|
|---|
| 203 | local prio=$3
|
|---|
| 204 | local prio_of_dep
|
|---|
| 205 | local build_of_dep
|
|---|
| 206 | local id_of_dep
|
|---|
| 207 | local r
|
|---|
| 208 |
|
|---|
| 209 | if test "${start%.dep}" = "$seek"; then return 0; fi
|
|---|
| [59afe73] | 210 | seen="$seen${start%.dep} "
|
|---|
| [5afaf7c] | 211 | if test -s $start; then
|
|---|
| [2140f22] | 212 | {
|
|---|
| 213 | while read prio_of_dep build_of_dep id_of_dep; do
|
|---|
| 214 | if test "$prio" -lt "$prio_of_dep"; then continue; fi
|
|---|
| [5afaf7c] | 215 | if ! test "${seen% $id_of_dep *}" = "$seen"; then continue; fi
|
|---|
| [2140f22] | 216 | if path_to ${id_of_dep}.dep $seek $prio; then return 0; fi
|
|---|
| 217 | done
|
|---|
| 218 | } < $start
|
|---|
| 219 | fi
|
|---|
| 220 | return 1
|
|---|
| 221 | }
|
|---|
| 222 | #------------------#
|
|---|
| 223 | clean_subgraph() { #
|
|---|
| 224 | #------------------#
|
|---|
| 225 | : <<inline_doc
|
|---|
| 226 | function: Remove dangling edges and create groups of deps for "after"
|
|---|
| 227 | deps: A-before->B-after->C becomes:
|
|---|
| 228 | A -before-> Bgroupxx -before-> B
|
|---|
| 229 | \
|
|---|
| 230 | -before-> C
|
|---|
| 231 | the name of the group is chosen so that it is unlikely as
|
|---|
| 232 | a package name (so that it is removed when building the
|
|---|
| 233 | xml book).
|
|---|
| 234 | input vars: None
|
|---|
| 235 | files: <node>.dep files containing dangling edges and
|
|---|
| 236 | "after" qualifiers
|
|---|
| 237 | returns: 0
|
|---|
| 238 | output: files: <node>.dep files containing no dangling edges and
|
|---|
| 239 | no "after" qualifiers
|
|---|
| 240 | on error: nothing
|
|---|
| 241 | on success: nothing
|
|---|
| 242 | inline_doc
|
|---|
| 243 |
|
|---|
| 244 | local node
|
|---|
| 245 | local id_of_dep
|
|---|
| 246 | local prio_of_dep
|
|---|
| 247 | local build_of_dep
|
|---|
| 248 | local lines_to_remove
|
|---|
| 249 | local lines_to_change
|
|---|
| 250 | local parent
|
|---|
| 251 | local p
|
|---|
| 252 | local b
|
|---|
| 253 | local start
|
|---|
| 254 | local seen
|
|---|
| 255 |
|
|---|
| 256 | for node in $(ls *.dep); do
|
|---|
| 257 | if test $node = root.dep; then continue; fi
|
|---|
| [28546ae] | 258 | echo Cleaning $node
|
|---|
| [2140f22] | 259 | lines_to_remove=
|
|---|
| 260 | {
|
|---|
| 261 | while read prio_of_dep build_of_dep id_of_dep; do
|
|---|
| 262 | if ! test -f ${id_of_dep}.dep; then
|
|---|
| 263 | lines_to_remove="$lines_to_remove $id_of_dep"
|
|---|
| 264 | continue
|
|---|
| 265 | fi
|
|---|
| 266 | done
|
|---|
| 267 | } <$node
|
|---|
| 268 | for id_of_dep in $lines_to_remove; do
|
|---|
| 269 | sed "/\ $id_of_dep\$/d" -i $node
|
|---|
| 270 | done
|
|---|
| 271 | done
|
|---|
| 272 | for node in $(grep -l ' a ' *.dep); do
|
|---|
| 273 | lines_to_remove=
|
|---|
| [28546ae] | 274 | echo Process "runtime" deps in $node
|
|---|
| [2140f22] | 275 | if ! [ -e ${node%.dep}groupxx.dep ]; then
|
|---|
| [f1edc8e] | 276 | b=0
|
|---|
| [2140f22] | 277 | for parent in $(grep -l ${node%.dep}\$ *); do
|
|---|
| 278 | p=0
|
|---|
| 279 | for start in $(grep ' a ' $node | cut -d' ' -f3); do
|
|---|
| 280 | seen=" "
|
|---|
| 281 | if path_to ${start}.dep ${parent%.dep} 3; then p=1; break; fi
|
|---|
| 282 | done
|
|---|
| 283 | if test $p = 0; then
|
|---|
| [f1edc8e] | 284 | b=1
|
|---|
| [2140f22] | 285 | sed -i "s/\ ${node%.dep}\$/&groupxx/" $parent
|
|---|
| 286 | fi
|
|---|
| 287 | done
|
|---|
| 288 | echo "1 b ${node%.dep}" > ${node%.dep}groupxx.dep
|
|---|
| [f1edc8e] | 289 | if test $b = 0; then echo "1 b ${node%.dep}groupxx" >> root.dep; fi
|
|---|
| [2140f22] | 290 | fi
|
|---|
| 291 | {
|
|---|
| 292 | while read prio_of_dep build_of_dep id_of_dep; do
|
|---|
| 293 | if test $build_of_dep = a; then
|
|---|
| 294 | if ! grep -q ${id_of_dep} ${node%.dep}groupxx.dep; then
|
|---|
| 295 | echo "$prio_of_dep b ${id_of_dep}" >> ${node%.dep}groupxx.dep
|
|---|
| 296 | fi
|
|---|
| 297 | lines_to_remove="$lines_to_remove $id_of_dep"
|
|---|
| 298 | fi
|
|---|
| 299 | done
|
|---|
| 300 | } <$node
|
|---|
| 301 | for id_of_dep in $lines_to_remove; do
|
|---|
| 302 | sed "/\ $id_of_dep\$/d" -i $node
|
|---|
| 303 | done
|
|---|
| 304 | done
|
|---|
| 305 | for node in $(grep -l ' f ' *); do
|
|---|
| [28546ae] | 306 | echo Process "first" deps in $node
|
|---|
| [2140f22] | 307 | lines_to_change=
|
|---|
| 308 | {
|
|---|
| 309 | while read prio_of_dep build_of_dep id_of_dep; do
|
|---|
| 310 | if test $build_of_dep = f; then
|
|---|
| 311 | if ! test -f ${id_of_dep}-pass1.dep; then
|
|---|
| 312 | cp ${id_of_dep}{,-pass1}.dep;
|
|---|
| 313 | fi
|
|---|
| 314 | lines_to_change="$lines_to_change $id_of_dep"
|
|---|
| 315 | unset lr
|
|---|
| 316 | {
|
|---|
| 317 | while read p b start; do
|
|---|
| 318 | seen=" "
|
|---|
| 319 | if path_to ${start}.dep ${node%.dep} $p; then
|
|---|
| 320 | lr="$lr $start"
|
|---|
| 321 | fi
|
|---|
| 322 | done
|
|---|
| 323 | } < ${id_of_dep}-pass1.dep
|
|---|
| 324 | for p in $lr; do
|
|---|
| 325 | sed "/\ $p\$/d" -i ${id_of_dep}-pass1.dep
|
|---|
| 326 | done
|
|---|
| 327 | fi
|
|---|
| 328 | done
|
|---|
| 329 | } <$node
|
|---|
| 330 | for id_of_dep in $lines_to_change; do
|
|---|
| [d80302b] | 331 | sed "/\ $id_of_dep\$/"'{s/[[:digit:]] f /1 b /;s/$/-pass1/}' -i $node
|
|---|
| [2140f22] | 332 | done
|
|---|
| 333 | done
|
|---|
| 334 | } # End clean_subgraph
|
|---|
| 335 |
|
|---|
| 336 | #----------------------------#
|
|---|
| 337 | generate_dependency_tree() { #
|
|---|
| 338 | #----------------------------#
|
|---|
| 339 | : <<inline_doc
|
|---|
| 340 | function: Create a subtree of the dependency tree
|
|---|
| 341 | (recursive function)
|
|---|
| 342 | input vars: $1 : file with a list of targets (child nodes)
|
|---|
| 343 | the first line of the file is the link
|
|---|
| 344 | $2 : priority (1=req, 2=rec, 3=opt)
|
|---|
| [e4b1293] | 345 | returns: 0 if the tree has been successfully created
|
|---|
| 346 | 1 if we are backing up to the parent of a circular dep
|
|---|
| [2140f22] | 347 | and there are only required deps in the cycle
|
|---|
| 348 | 2 if we are backing up to the parent of a circular dep
|
|---|
| 349 | and there are recommended deps and no optional deps in the
|
|---|
| 350 | cycle
|
|---|
| 351 | 3 if we are backing up to the parent of a circular dep
|
|---|
| 352 | and there are optiional deps in the cycle
|
|---|
| 353 | modifies: vars: ParentNode is set when return is not 0
|
|---|
| [e4b1293] | 354 | output: files: for each <pkg> with dependencies in $1,
|
|---|
| [2140f22] | 355 | a file <pkg>.tree and its dependencies
|
|---|
| [3c10176] | 356 | on error: nothing
|
|---|
| 357 | on success: nothing
|
|---|
| 358 | inline_doc
|
|---|
| 359 |
|
|---|
| [2140f22] | 360 | local depFile=$1
|
|---|
| [7dc8595] | 361 | local priority=$2
|
|---|
| [e576789] | 362 | local -a rootlink
|
|---|
| [7dc8595] | 363 | local -a priolink
|
|---|
| [e576789] | 364 | local -a otherlink
|
|---|
| 365 | local -i depth
|
|---|
| 366 | local -i count=0
|
|---|
| 367 | local id_of_dep
|
|---|
| [2140f22] | 368 | local build_of_dep
|
|---|
| 369 | local prio_of_dep
|
|---|
| [e576789] | 370 | local parent
|
|---|
| 371 | local lines_to_remove=
|
|---|
| 372 | local srootlink
|
|---|
| [7dc8595] | 373 | local priostring
|
|---|
| 374 | local dpriostring
|
|---|
| 375 | local i
|
|---|
| [e576789] | 376 |
|
|---|
| 377 | {
|
|---|
| [2140f22] | 378 | read -a rootlink
|
|---|
| [e576789] | 379 | depth=${#rootlink[*]}
|
|---|
| [2140f22] | 380 | read -a priolink
|
|---|
| [e576789] | 381 | srootlink="${rootlink[*]} "
|
|---|
| [7dc8595] | 382 | case $priority in
|
|---|
| 383 | 1) priostring=required ;;
|
|---|
| 384 | 2) priostring=recommended ;;
|
|---|
| 385 | 3) priostring=optional ;;
|
|---|
| 386 | esac
|
|---|
| [2140f22] | 387 | # start of depFile
|
|---|
| 388 | echo -en "\nNode: $depth${spaceSTR:0:$depth}${RED}${depFile%.tree}${OFF} $priostring"
|
|---|
| [e576789] | 389 |
|
|---|
| [2140f22] | 390 | while read prio_of_dep build_of_dep id_of_dep; do
|
|---|
| 391 | case $prio_of_dep in
|
|---|
| [7dc8595] | 392 | 1) dpriostring=required ;;
|
|---|
| 393 | 2) dpriostring=recommended ;;
|
|---|
| 394 | 3) dpriostring=optional ;;
|
|---|
| [2140f22] | 395 | esac
|
|---|
| [e576789] | 396 | # count entries in file
|
|---|
| 397 | (( count++ ))
|
|---|
| 398 | # Has this entry already been seen?
|
|---|
| [2140f22] | 399 | if [ -f ${id_of_dep}.tree ]; then # found ${id_of_dep}.tree already in tree
|
|---|
| 400 | otherlink=($(head -n 1 ${id_of_dep}.tree))
|
|---|
| [2e1c1c3] | 401 | if [ -z "${otherlink[*]}" ]
|
|---|
| [2140f22] | 402 | then echo otherlink empty for $id_of_dep.tree
|
|---|
| [e576789] | 403 | echo This should not happen, but happens to happen...
|
|---|
| 404 | exit 1
|
|---|
| 405 | fi
|
|---|
| [2140f22] | 406 | #Do not use "${rootlink[*]}" =~ "${otherlink[*]}": case rootlink=(1 11)
|
|---|
| [e576789] | 407 | # and otherlink=(1 1)
|
|---|
| [e4b1293] | 408 | if [[ ${srootlink#"${otherlink[*]} "} != ${srootlink} ]]; then # cir. dep
|
|---|
| [7dc8595] | 409 | echo -en "\nCirc: $((depth+1))${spaceSTR:0:$((depth+1))}${YELLOW}${id_of_dep}${OFF} $dpriostring"
|
|---|
| [2140f22] | 410 | # Find lowest priority in branch from parent to depFile:
|
|---|
| [7dc8595] | 411 | p2=0
|
|---|
| 412 | for (( i=${#otherlink[*]}; i < $depth ; i++ )) ; do
|
|---|
| 413 | if (( ${priolink[i]} > $p2 )); then p2=${priolink[i]}; fi
|
|---|
| 414 | done
|
|---|
| 415 | if (( $prio_of_dep >= $p2 )); then # prune
|
|---|
| [e4b1293] | 416 | lines_to_remove="$lines_to_remove $id_of_dep"
|
|---|
| [2140f22] | 417 | sed -i "/$id_of_dep/d" ${depFile/.tree/.dep}
|
|---|
| 418 | else # find and set parent, then return lowest priority
|
|---|
| 419 | # The parent has the same link without the last entry.
|
|---|
| 420 | # We do not need otherlink anymore so just destroy the last element
|
|---|
| 421 | unset otherlink[-1]
|
|---|
| 422 | parentNode=$(grep ^"${otherlink[*]}"\$ -l *)
|
|---|
| 423 | return $p2
|
|---|
| [e4b1293] | 424 | fi
|
|---|
| [2140f22] | 425 | else # not circular: prune tree (but not .dep, since it may happen that
|
|---|
| [7ac11f0] | 426 | # the tree is destroyed and rebuilt in another order)
|
|---|
| [e576789] | 427 | lines_to_remove="$lines_to_remove $id_of_dep"
|
|---|
| [e4b1293] | 428 | fi # circular or not
|
|---|
| 429 | continue # this dependency has already been seen, and the associated
|
|---|
| 430 | # subtree computed. We are done
|
|---|
| 431 | fi # Has this entry already been seen?
|
|---|
| [2140f22] | 432 | # So, this entry has not already been seen. Let's build the corresponding
|
|---|
| 433 | # subtree. First check there is a subtree...
|
|---|
| 434 | # Use -s, because it may happen that after removing lines, .dep exists
|
|---|
| [d7c07e0] | 435 | # but is empty.
|
|---|
| [2140f22] | 436 | if [[ -s ${id_of_dep}.dep ]]; then # this dependency has dependencies
|
|---|
| 437 | sed "1i${rootlink[*]} $count\\
|
|---|
| 438 | ${priolink[*]} $prio_of_dep" < ${id_of_dep}.dep \
|
|---|
| 439 | > ${id_of_dep}.tree # add link and priolink
|
|---|
| 440 | generate_dependency_tree ${id_of_dep}.tree $prio_of_dep
|
|---|
| [e576789] | 441 | # Test return value, in case we exchange dependencies
|
|---|
| [2140f22] | 442 | p2=$?
|
|---|
| 443 | case $p2 in
|
|---|
| 444 | 0) # Normal return
|
|---|
| 445 | ;;
|
|---|
| 446 | $prio_of_dep) # we remove this dep, but since it may become unreachable,
|
|---|
| 447 | # move it to be built later (as a dep of parent).
|
|---|
| 448 | tree_erase ${id_of_dep}.tree
|
|---|
| 449 | lines_to_remove="$lines_to_remove $id_of_dep"
|
|---|
| 450 | sed -i "/${id_of_dep}/d" ${depFile/.tree/.dep}
|
|---|
| 451 | echo "$prio_of_dep b $id_of_dep" >> $parentNode
|
|---|
| 452 | # must be added to .dep in case parentNode is destroyed when erasing
|
|---|
| 453 | # the tree
|
|---|
| 454 | echo "$prio_of_dep b $id_of_dep" >> ${parentNode/.tree/.dep}
|
|---|
| 455 | continue
|
|---|
| 456 | ;;
|
|---|
| 457 | *) # We are backing up
|
|---|
| 458 | return $p2
|
|---|
| 459 | ;;
|
|---|
| 460 | esac
|
|---|
| 461 | else # id_of_dep has no dependencies, just record the link in a file
|
|---|
| 462 | # and print
|
|---|
| 463 | echo "${rootlink[*]} $count" > ${id_of_dep}.tree
|
|---|
| 464 | echo -en "\nLeaf: $(($depth+1))${spaceSTR:0:$(($depth+1))}${CYAN}${id_of_dep}${OFF} $dpriostring"
|
|---|
| 465 | fi
|
|---|
| [e576789] | 466 | done
|
|---|
| [2140f22] | 467 | echo -en "\n End: $depth${spaceSTR:0:$depth}${GREEN}${depFile%.tree}${OFF}"
|
|---|
| 468 | } <$depFile
|
|---|
| [e576789] | 469 | # It may happen that a file is created with several times
|
|---|
| 470 | # the same line. Normally, all those lines but one
|
|---|
| 471 | # would be flagged to be removed (or all of them if
|
|---|
| [e4b1293] | 472 | # the dependency appeared before). A simple sed /$line/d
|
|---|
| [e576789] | 473 | # destroys all the lines. We should instead remove
|
|---|
| 474 | # only one for each appearance of it in lines_to_remove.
|
|---|
| [e4b1293] | 475 | # so first get the position of last line and then delete
|
|---|
| [e576789] | 476 | # that line
|
|---|
| 477 | for line in $lines_to_remove
|
|---|
| [2140f22] | 478 | do lineno=$(sed -n /^[[:digit:]]\ b\ $line\$/= $depFile | tail -n1)
|
|---|
| 479 | sed -i ${lineno}d $depFile
|
|---|
| [e576789] | 480 | done
|
|---|
| 481 | return 0
|
|---|
| 482 | }
|
|---|
| [3c10176] | 483 |
|
|---|
| [2140f22] | 484 |
|
|---|
| [e576789] | 485 | #---------------#
|
|---|
| 486 | tree_browse() { #
|
|---|
| 487 | #---------------#
|
|---|
| 488 | local file=$1
|
|---|
| 489 | local f
|
|---|
| 490 |
|
|---|
| 491 | #echo file=$file
|
|---|
| [7dc8595] | 492 | for f in $(grep '[^0-9 ]' $file | sed 's/.* //'); do
|
|---|
| [e576789] | 493 | # echo f=$f
|
|---|
| [2140f22] | 494 | if grep -q '[^0-9 ]' ${f}.tree ; then
|
|---|
| 495 | tree_browse ${f}.tree
|
|---|
| [3c10176] | 496 | fi
|
|---|
| [e576789] | 497 | echo $f
|
|---|
| 498 | done
|
|---|
| 499 | }
|
|---|
| [3c10176] | 500 |
|
|---|
| [e576789] | 501 | #--------------#
|
|---|
| 502 | tree_erase() { #
|
|---|
| 503 | #--------------#
|
|---|
| 504 | local file=$1
|
|---|
| 505 | local f
|
|---|
| [6c8095a] | 506 | local rootlink
|
|---|
| [f37d08b] | 507 | local rootlink2
|
|---|
| [e576789] | 508 |
|
|---|
| 509 | #echo file=$file
|
|---|
| [6c8095a] | 510 | rootlink="$(head -n1 $file) "
|
|---|
| [7dc8595] | 511 | for f in $(grep '[^0-9 ]' $file | sed 's/.* //'); do
|
|---|
| [2140f22] | 512 | if [ -f ${f}.tree ]; then
|
|---|
| 513 | rootlink2="$(head -n1 ${f}.tree) "
|
|---|
| [6c8095a] | 514 | # We want two things:
|
|---|
| 515 | # i) do not erase the file if it is in another branch
|
|---|
| 516 | # ii) do not erase the file if there is a circular dependency
|
|---|
| 517 | # for case i), we test that rootlink is contained in rootlink2
|
|---|
| 518 | # for case ii), we test that rootlink2 is not contained in
|
|---|
| 519 | # rootlink.
|
|---|
| [f37d08b] | 520 | # See comment above about srootlink
|
|---|
| [6c8095a] | 521 | if [[ ${rootlink2#${rootlink}} != ${rootlink2} &&
|
|---|
| 522 | ${rootlink#${rootlink2}} == ${rootlink} ]] ; then
|
|---|
| [2140f22] | 523 | tree_erase ${f}.tree
|
|---|
| [e576789] | 524 | fi
|
|---|
| 525 | fi
|
|---|
| 526 | done
|
|---|
| 527 | rm -f $file
|
|---|
| [3c10176] | 528 | }
|
|---|
