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1 | #!/bin/sh | |
2 | # This script reads filenames from STDIN and outputs any relevant requires | |
3 | # information that needs to be included in the package. | |
4 | # | |
5 | # Based on rpm-4.4.2/scripts/find-req.pl | |
6 | # Authors: Elan Ruusamäe <glen@pld-linux.org> | |
7 | ||
8 | export PATH="/sbin:/usr/sbin:/bin:/usr/bin" | |
9 | ||
10 | # save $- state, to enable in functions | |
11 | debug=$- | |
12 | ||
13 | # enable debug: FIND_JAVAREQ_DEBUG=true | |
14 | FIND_JAVAREQ_DEBUG=${FIND_JAVAREQ_DEBUG:-false} | |
15 | ||
16 | javaclassversion() { | |
17 | set -$debug | |
18 | [ $# -gt 0 ] || return 1 | |
19 | $FIND_JAVAREQ_DEBUG && echo >&2 ">> class: $*" | |
20 | ||
21 | local classver=$(echo "$@" | xargs -r file | grep -o 'compiled Java class data, version [0-9.]*' | awk '{print $NF}' | sort -u) | |
22 | if [ -z "$classver" ]; then | |
23 | return 1 | |
24 | fi | |
25 | ||
26 | local v | |
27 | for v in $classver; do | |
28 | echo "java(ClassDataVersion) >= $v" | |
29 | done | |
30 | return 0 | |
31 | } | |
32 | ||
33 | javajarversion() { | |
34 | set -$debug | |
35 | local jar="$1" | |
36 | local tmp ret=0 | |
37 | $FIND_JAVAREQ_DEBUG && echo >&2 ">> jar: $jar" | |
38 | ||
39 | # check only files, symlinks could point outside buildroot | |
40 | [ -f "$jar" -a ! -L "$jar" ] || return $ret | |
41 | ||
42 | tmp=$(mktemp -d) | |
43 | unzip -q -d $tmp $jar >&2 | |
44 | # workaround for .jar files with stupid permissions | |
45 | chmod -R u+rwX $tmp | |
46 | ||
47 | # find .jar and .class files | |
48 | for file in $(find $tmp -type f '(' -name '*.class' -o -name '*.jar' ')'); do | |
49 | case "$file" in | |
50 | *.jar) | |
51 | # recursion! | |
52 | javajarversion "$file" || ret=1 | |
53 | ;; | |
54 | *.class) | |
55 | javaclassversion "$file" || { | |
56 | echo >&2 "ERROR: Class version could not be extracted from $file" | |
57 | ret=1 | |
58 | } | |
59 | ;; | |
60 | esac | |
61 | done | |
62 | rm -rf $tmp | |
63 | ||
64 | return $ret | |
65 | } | |
66 | ||
67 | find_requires() { | |
68 | set -$debug | |
69 | local ret=0 | |
70 | for file in $FILES; do | |
71 | case $file in | |
72 | *.jar) | |
73 | javajarversion "$file" || ret=1 | |
74 | ;; | |
75 | *.class) | |
76 | javaclassversion "$file" || { | |
77 | echo >&2 "ERROR: Class version could not be extracted from $file" | |
78 | ret=1 | |
79 | } | |
80 | ;; | |
81 | esac | |
82 | done | |
83 | return $ret | |
84 | } | |
85 | ||
86 | FILES=$(cat -) | |
87 | ||
88 | t=$(mktemp) | |
89 | ret=0 | |
90 | find_requires > $t || ret=1 | |
91 | sort -u $t | |
92 | rm -f $t | |
93 | exit $ret |