[7850] | 1 | -- This script will handle Allow-Duplicated packages when more |
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| 2 | -- than one is available during an install operation, and will |
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| 3 | -- also upgrade these packages in a dist-upgrade operation (if |
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| 4 | -- they match a regex in RPM::Allow-Duplicated-Upgrade). |
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| 5 | -- |
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| 6 | -- This script must be plugged in the following slots: |
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| 7 | -- |
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| 8 | -- Scripts::AptGet::Install::SelectPackage |
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| 9 | -- Scripts::AptGet::DistUpgrade |
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| 10 | -- Scripts::Synaptic::DistUpgrade |
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| 11 | -- |
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| 12 | -- Author: Gustavo Niemeyer <niemeyer@conectiva.com> |
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| 13 | |
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| 14 | rex = require("rex_posix") |
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| 15 | |
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| 16 | function realname(name) |
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| 17 | local s, e, name = string.find(name, "(.+)#") |
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| 18 | return name |
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| 19 | end |
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| 20 | |
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| 21 | function get_pkglist(name) |
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| 22 | local j = 1 |
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| 23 | local packages = {} |
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| 24 | for i, p in ipairs(pkglist()) do |
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| 25 | if realname(pkgname(p)) == name then |
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| 26 | packages[j] = p |
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| 27 | j = j + 1 |
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| 28 | end |
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| 29 | end |
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| 30 | return packages |
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| 31 | end |
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| 32 | |
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| 33 | -- select best choice of virtual provided packages |
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| 34 | function select_goodpackage(packages) |
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| 35 | local goodpkg = packages[1] |
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| 36 | local goodpkgname = realname(pkgname(goodpkg)) |
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| 37 | |
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| 38 | if goodpkgname then |
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| 39 | -- Check if every package has the same real name, and |
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| 40 | -- leave only the one with the greatest version, if |
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| 41 | -- that's the case. |
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| 42 | for i = 2, table.getn(packages) do |
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| 43 | local nextpkg = packages[i] |
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| 44 | local nextpkgname = realname(pkgname(nextpkg)) |
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| 45 | if nextpkgname ~= goodpkgname then |
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| 46 | --markkeep(goodpkg) |
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| 47 | goodpkg = nil |
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| 48 | break |
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| 49 | end |
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| 50 | if not pkgvercand(goodpkg) |
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| 51 | or pkgvercand(nextpkg) and |
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| 52 | verstrcmp(verstr(pkgvercand(goodpkg)), |
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| 53 | verstr(pkgvercand(nextpkg))) == -1 then |
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| 54 | --markkeep(goodpkg) |
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| 55 | goodpkg = nextpkg |
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| 56 | end |
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| 57 | end |
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| 58 | if goodpkg and pkgvercand(goodpkg) then |
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| 59 | selected = goodpkg |
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| 60 | markinstall(goodpkg) |
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| 61 | end |
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| 62 | end |
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| 63 | if not selected then |
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| 64 | -- Strip #... from package names if we can't find a good solution. |
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| 65 | for i, name in ipairs(packagenames) do |
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| 66 | local name = realname(name) |
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| 67 | if name and name ~= virtualname then |
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| 68 | packagenames[i] = name |
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| 69 | end |
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| 70 | end |
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| 71 | end |
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| 72 | end |
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| 73 | |
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| 74 | if script_slot == "Scripts::AptGet::Install::PreResolve" then |
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| 75 | for i, pkg in ipairs(pkglist()) do |
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| 76 | s, e, name = string.find(pkgname(pkg), "(.+)#") |
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| 77 | if statinstall(pkg) and s then |
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| 78 | -- unmark selected packages |
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| 79 | markkeep(pkg) |
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| 80 | local packages = {} |
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| 81 | packages = get_pkglist(name) |
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| 82 | |
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| 83 | select_goodpackage(packages) |
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| 84 | end |
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| 85 | end |
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| 86 | end |
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| 87 | |
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| 88 | if script_slot == "Scripts::AptGet::Install::SelectPackage" then |
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| 89 | local found = 0 |
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| 90 | for i, pkg in ipairs(packages) do |
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| 91 | p = pkgfind(pkgname(pkg)) |
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| 92 | if pkgvercur(p) then |
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| 93 | found = 1 |
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| 94 | end |
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| 95 | end |
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| 96 | if found == 0 then |
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| 97 | select_goodpackage(packages) |
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| 98 | end |
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| 99 | end |
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| 100 | |
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| 101 | if script_slot == "Scripts::AptGet::DistUpgrade" or |
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| 102 | script_slot == "Scripts::AptGet::Upgrade" or |
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| 103 | script_slot == "Scripts::Synaptic::DistUpgrade" or |
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| 104 | script_slot == "Scripts::Synaptic::Upgrade" then |
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| 105 | -- Automatically install newer versions of all packages which |
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| 106 | -- are registered in the Allow-Duplicated scheme and are matched |
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| 107 | -- by the regular expressions in RPM::Allow-Duplicated-Upgrade. |
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| 108 | |
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| 109 | -- Compile expressions with package names which should |
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| 110 | -- be considered for upgrade. |
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| 111 | local updatelist = confgetlist("RPM::Allow-Duplicated-Upgrade") |
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| 112 | for i, expr in ipairs(updatelist) do |
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| 113 | updatelist[i] = rex.new(expr) |
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| 114 | end |
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| 115 | |
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| 116 | if table.getn(updatelist) ~= 0 then |
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| 117 | |
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| 118 | -- Gather information about Allow-Duplicated packges. |
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| 119 | local canddups = {} |
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| 120 | local curdups = {} |
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| 121 | for i, pkg in pairs(pkglist()) do |
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| 122 | local name = realname(pkgname(pkg)) |
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| 123 | if name then |
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| 124 | if pkgvercur(pkg) then |
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| 125 | if not curdups[name] then |
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| 126 | curdups[name] = {} |
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| 127 | end |
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| 128 | table.insert(curdups[name], |
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| 129 | verstr(pkgvercur(pkg))) |
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| 130 | elseif pkgvercand(pkg) then |
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| 131 | if not canddups[name] then |
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| 132 | canddups[name] = {} |
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| 133 | end |
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| 134 | table.insert(canddups[name], |
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| 135 | verstr(pkgvercand(pkg))) |
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| 136 | end |
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| 137 | end |
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| 138 | end |
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| 139 | |
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| 140 | -- Compile expressions with package names which should be hold. |
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| 141 | local holdlist = confgetlist("RPM::Hold") |
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| 142 | for i, expr in ipairs(holdlist) do |
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| 143 | holdlist[i] = rex.new(expr) |
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| 144 | end |
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| 145 | |
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| 146 | -- Remove packages without any matches in updatelist, or with |
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| 147 | -- any matches in holdlist. |
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| 148 | for name, _ in pairs(curdups) do |
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| 149 | local found = false |
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| 150 | for i, expr in ipairs(updatelist) do |
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| 151 | if expr:match(name) then |
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| 152 | found = true |
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| 153 | break |
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| 154 | end |
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| 155 | end |
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| 156 | if found then |
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| 157 | for i, expr in ipairs(holdlist) do |
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| 158 | if expr:match(name) then |
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| 159 | found = false |
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| 160 | break |
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| 161 | end |
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| 162 | end |
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| 163 | end |
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| 164 | if not found then |
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| 165 | curdups[name] = nil |
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| 166 | end |
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| 167 | end |
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| 168 | |
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| 169 | -- Mark the newest packages for installation. |
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| 170 | for name, _ in pairs(curdups) do |
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| 171 | if canddups[name] then |
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| 172 | -- Check the best candidate version. |
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| 173 | local bestver = nil |
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| 174 | for i, ver in ipairs(canddups[name]) do |
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| 175 | if not bestver or |
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| 176 | verstrcmp(bestver, ver) == -1 then |
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| 177 | bestver = ver |
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| 178 | end |
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| 179 | end |
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| 180 | |
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| 181 | -- Now check if it's newer than all installed |
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| 182 | -- versions. |
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| 183 | for i, ver in ipairs(curdups[name]) do |
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| 184 | if verstrcmp(ver, bestver) == 1 then |
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| 185 | bestver = nil |
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| 186 | break |
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| 187 | end |
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| 188 | end |
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| 189 | |
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| 190 | -- Finally, mark it for installation. |
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| 191 | if bestver then |
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| 192 | markinstall(name.."#"..bestver) |
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| 193 | end |
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| 194 | end |
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| 195 | end |
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| 196 | end |
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| 197 | end |
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| 198 | |
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| 199 | -- vim:ts=4:sw=4:et |
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