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< h1 > Source code for pylorax.sysutils< / h1 > < div class = "highlight" > < pre >
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< span > < / span > < span class = "c1" > #< / span >
< span class = "c1" > # sysutils.py< / span >
< span class = "c1" > #< / span >
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< span class = "c1" > # Copyright (C) 2009-2019 Red Hat, Inc.< / span >
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< span class = "c1" > #< / span >
< span class = "c1" > # This program is free software; you can redistribute it and/or modify< / span >
< span class = "c1" > # it under the terms of the GNU General Public License as published by< / span >
< span class = "c1" > # the Free Software Foundation; either version 2 of the License, or< / span >
< span class = "c1" > # (at your option) any later version.< / span >
< span class = "c1" > #< / span >
< span class = "c1" > # This program is distributed in the hope that it will be useful,< / span >
< span class = "c1" > # but WITHOUT ANY WARRANTY; without even the implied warranty of< / span >
< span class = "c1" > # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the< / span >
< span class = "c1" > # GNU General Public License for more details.< / span >
< span class = "c1" > #< / span >
< span class = "c1" > # You should have received a copy of the GNU General Public License< / span >
< span class = "c1" > # along with this program. If not, see < http://www.gnu.org/licenses/> .< / span >
< span class = "c1" > #< / span >
< span class = "c1" > # Red Hat Author(s): Martin Gracik < mgracik@redhat.com> < / span >
< span class = "c1" > #< / span >
< span class = "n" > __all__< / span > < span class = "o" > =< / span > < span class = "p" > [< / span > < span class = "s2" > " joinpaths" < / span > < span class = "p" > ,< / span > < span class = "s2" > " touch" < / span > < span class = "p" > ,< / span > < span class = "s2" > " replace" < / span > < span class = "p" > ,< / span > < span class = "s2" > " chown_" < / span > < span class = "p" > ,< / span > < span class = "s2" > " chmod_" < / span > < span class = "p" > ,< / span > < span class = "s2" > " remove" < / span > < span class = "p" > ,< / span >
< span class = "s2" > " linktree" < / span > < span class = "p" > ]< / span >
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< span class = "kn" > import< / span > < span class = "nn" > sys< / span >
< span class = "kn" > import< / span > < span class = "nn" > os< / span >
< span class = "kn" > import< / span > < span class = "nn" > re< / span >
< span class = "kn" > import< / span > < span class = "nn" > fileinput< / span >
< span class = "kn" > import< / span > < span class = "nn" > pwd< / span >
< span class = "kn" > import< / span > < span class = "nn" > grp< / span >
< span class = "kn" > import< / span > < span class = "nn" > glob< / span >
< span class = "kn" > import< / span > < span class = "nn" > shutil< / span >
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< span class = "kn" > import< / span > < span class = "nn" > shlex< / span >
< span class = "kn" > from< / span > < span class = "nn" > configparser< / span > < span class = "k" > import< / span > < span class = "n" > ConfigParser< / span >
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< span class = "kn" > from< / span > < span class = "nn" > pylorax.executils< / span > < span class = "k" > import< / span > < span class = "n" > runcmd< / span >
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< div class = "viewcode-block" id = "joinpaths" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.sysutils.joinpaths" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > joinpaths< / span > < span class = "p" > (< / span > < span class = "o" > *< / span > < span class = "n" > args< / span > < span class = "p" > ,< / span > < span class = "o" > **< / span > < span class = "n" > kwargs< / span > < span class = "p" > ):< / span >
< span class = "n" > path< / span > < span class = "o" > =< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > path< / span > < span class = "o" > .< / span > < span class = "n" > sep< / span > < span class = "o" > .< / span > < span class = "n" > join< / span > < span class = "p" > (< / span > < span class = "n" > args< / span > < span class = "p" > )< / span >
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< span class = "k" > if< / span > < span class = "n" > kwargs< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "s2" > " follow_symlinks" < / span > < span class = "p" > ):< / span >
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< span class = "k" > return< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > path< / span > < span class = "o" > .< / span > < span class = "n" > realpath< / span > < span class = "p" > (< / span > < span class = "n" > path< / span > < span class = "p" > )< / span >
< span class = "k" > else< / span > < span class = "p" > :< / span >
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< span class = "k" > return< / span > < span class = "n" > path< / span > < / div >
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< div class = "viewcode-block" id = "touch" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.sysutils.touch" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > touch< / span > < span class = "p" > (< / span > < span class = "n" > fname< / span > < span class = "p" > ):< / span >
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< span class = "c1" > # python closes the file when it goes out of scope< / span >
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< span class = "nb" > open< / span > < span class = "p" > (< / span > < span class = "n" > fname< / span > < span class = "p" > ,< / span > < span class = "s2" > " w" < / span > < span class = "p" > )< / span > < span class = "o" > .< / span > < span class = "n" > write< / span > < span class = "p" > (< / span > < span class = "s2" > " " < / span > < span class = "p" > )< / span > < / div >
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< div class = "viewcode-block" id = "replace" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.sysutils.replace" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > replace< / span > < span class = "p" > (< / span > < span class = "n" > fname< / span > < span class = "p" > ,< / span > < span class = "n" > find< / span > < span class = "p" > ,< / span > < span class = "n" > sub< / span > < span class = "p" > ):< / span >
< span class = "n" > fin< / span > < span class = "o" > =< / span > < span class = "n" > fileinput< / span > < span class = "o" > .< / span > < span class = "n" > input< / span > < span class = "p" > (< / span > < span class = "n" > fname< / span > < span class = "p" > ,< / span > < span class = "n" > inplace< / span > < span class = "o" > =< / span > < span class = "mi" > 1< / span > < span class = "p" > )< / span >
< span class = "n" > pattern< / span > < span class = "o" > =< / span > < span class = "n" > re< / span > < span class = "o" > .< / span > < span class = "n" > compile< / span > < span class = "p" > (< / span > < span class = "n" > find< / span > < span class = "p" > )< / span >
< span class = "k" > for< / span > < span class = "n" > line< / span > < span class = "ow" > in< / span > < span class = "n" > fin< / span > < span class = "p" > :< / span >
< span class = "n" > line< / span > < span class = "o" > =< / span > < span class = "n" > pattern< / span > < span class = "o" > .< / span > < span class = "n" > sub< / span > < span class = "p" > (< / span > < span class = "n" > sub< / span > < span class = "p" > ,< / span > < span class = "n" > line< / span > < span class = "p" > )< / span >
< span class = "n" > sys< / span > < span class = "o" > .< / span > < span class = "n" > stdout< / span > < span class = "o" > .< / span > < span class = "n" > write< / span > < span class = "p" > (< / span > < span class = "n" > line< / span > < span class = "p" > )< / span >
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< span class = "n" > fin< / span > < span class = "o" > .< / span > < span class = "n" > close< / span > < span class = "p" > ()< / span > < / div >
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< div class = "viewcode-block" id = "chown_" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.sysutils.chown_" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > chown_< / span > < span class = "p" > (< / span > < span class = "n" > path< / span > < span class = "p" > ,< / span > < span class = "n" > user< / span > < span class = "o" > =< / span > < span class = "kc" > None< / span > < span class = "p" > ,< / span > < span class = "n" > group< / span > < span class = "o" > =< / span > < span class = "kc" > None< / span > < span class = "p" > ,< / span > < span class = "n" > recursive< / span > < span class = "o" > =< / span > < span class = "kc" > False< / span > < span class = "p" > ):< / span >
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< span class = "n" > uid< / span > < span class = "o" > =< / span > < span class = "n" > gid< / span > < span class = "o" > =< / span > < span class = "o" > -< / span > < span class = "mi" > 1< / span >
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< span class = "k" > if< / span > < span class = "n" > user< / span > < span class = "ow" > is< / span > < span class = "ow" > not< / span > < span class = "kc" > None< / span > < span class = "p" > :< / span >
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< span class = "n" > uid< / span > < span class = "o" > =< / span > < span class = "n" > pwd< / span > < span class = "o" > .< / span > < span class = "n" > getpwnam< / span > < span class = "p" > (< / span > < span class = "n" > user< / span > < span class = "p" > )[< / span > < span class = "mi" > 2< / span > < span class = "p" > ]< / span >
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< span class = "k" > if< / span > < span class = "n" > group< / span > < span class = "ow" > is< / span > < span class = "ow" > not< / span > < span class = "kc" > None< / span > < span class = "p" > :< / span >
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< span class = "n" > gid< / span > < span class = "o" > =< / span > < span class = "n" > grp< / span > < span class = "o" > .< / span > < span class = "n" > getgrnam< / span > < span class = "p" > (< / span > < span class = "n" > group< / span > < span class = "p" > )[< / span > < span class = "mi" > 2< / span > < span class = "p" > ]< / span >
< span class = "k" > for< / span > < span class = "n" > fname< / span > < span class = "ow" > in< / span > < span class = "n" > glob< / span > < span class = "o" > .< / span > < span class = "n" > iglob< / span > < span class = "p" > (< / span > < span class = "n" > path< / span > < span class = "p" > ):< / span >
< span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > chown< / span > < span class = "p" > (< / span > < span class = "n" > fname< / span > < span class = "p" > ,< / span > < span class = "n" > uid< / span > < span class = "p" > ,< / span > < span class = "n" > gid< / span > < span class = "p" > )< / span >
< span class = "k" > if< / span > < span class = "n" > recursive< / span > < span class = "ow" > and< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > path< / span > < span class = "o" > .< / span > < span class = "n" > isdir< / span > < span class = "p" > (< / span > < span class = "n" > fname< / span > < span class = "p" > ):< / span >
< span class = "k" > for< / span > < span class = "n" > nested< / span > < span class = "ow" > in< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > listdir< / span > < span class = "p" > (< / span > < span class = "n" > fname< / span > < span class = "p" > ):< / span >
< span class = "n" > nested< / span > < span class = "o" > =< / span > < span class = "n" > joinpaths< / span > < span class = "p" > (< / span > < span class = "n" > fname< / span > < span class = "p" > ,< / span > < span class = "n" > nested< / span > < span class = "p" > )< / span >
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< span class = "n" > chown_< / span > < span class = "p" > (< / span > < span class = "n" > nested< / span > < span class = "p" > ,< / span > < span class = "n" > user< / span > < span class = "p" > ,< / span > < span class = "n" > group< / span > < span class = "p" > ,< / span > < span class = "n" > recursive< / span > < span class = "p" > )< / span > < / div >
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< div class = "viewcode-block" id = "chmod_" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.sysutils.chmod_" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > chmod_< / span > < span class = "p" > (< / span > < span class = "n" > path< / span > < span class = "p" > ,< / span > < span class = "n" > mode< / span > < span class = "p" > ,< / span > < span class = "n" > recursive< / span > < span class = "o" > =< / span > < span class = "kc" > False< / span > < span class = "p" > ):< / span >
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< span class = "k" > for< / span > < span class = "n" > fname< / span > < span class = "ow" > in< / span > < span class = "n" > glob< / span > < span class = "o" > .< / span > < span class = "n" > iglob< / span > < span class = "p" > (< / span > < span class = "n" > path< / span > < span class = "p" > ):< / span >
< span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > chmod< / span > < span class = "p" > (< / span > < span class = "n" > fname< / span > < span class = "p" > ,< / span > < span class = "n" > mode< / span > < span class = "p" > )< / span >
< span class = "k" > if< / span > < span class = "n" > recursive< / span > < span class = "ow" > and< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > path< / span > < span class = "o" > .< / span > < span class = "n" > isdir< / span > < span class = "p" > (< / span > < span class = "n" > fname< / span > < span class = "p" > ):< / span >
< span class = "k" > for< / span > < span class = "n" > nested< / span > < span class = "ow" > in< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > listdir< / span > < span class = "p" > (< / span > < span class = "n" > fname< / span > < span class = "p" > ):< / span >
< span class = "n" > nested< / span > < span class = "o" > =< / span > < span class = "n" > joinpaths< / span > < span class = "p" > (< / span > < span class = "n" > fname< / span > < span class = "p" > ,< / span > < span class = "n" > nested< / span > < span class = "p" > )< / span >
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< span class = "n" > chmod_< / span > < span class = "p" > (< / span > < span class = "n" > nested< / span > < span class = "p" > ,< / span > < span class = "n" > mode< / span > < span class = "p" > ,< / span > < span class = "n" > recursive< / span > < span class = "p" > )< / span > < / div >
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< span class = "k" > def< / span > < span class = "nf" > cpfile< / span > < span class = "p" > (< / span > < span class = "n" > src< / span > < span class = "p" > ,< / span > < span class = "n" > dst< / span > < span class = "p" > ):< / span >
< span class = "n" > shutil< / span > < span class = "o" > .< / span > < span class = "n" > copy2< / span > < span class = "p" > (< / span > < span class = "n" > src< / span > < span class = "p" > ,< / span > < span class = "n" > dst< / span > < span class = "p" > )< / span >
< span class = "k" > if< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > path< / span > < span class = "o" > .< / span > < span class = "n" > isdir< / span > < span class = "p" > (< / span > < span class = "n" > dst< / span > < span class = "p" > ):< / span >
< span class = "n" > dst< / span > < span class = "o" > =< / span > < span class = "n" > joinpaths< / span > < span class = "p" > (< / span > < span class = "n" > dst< / span > < span class = "p" > ,< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > path< / span > < span class = "o" > .< / span > < span class = "n" > basename< / span > < span class = "p" > (< / span > < span class = "n" > src< / span > < span class = "p" > ))< / span >
< span class = "k" > return< / span > < span class = "n" > dst< / span >
< span class = "k" > def< / span > < span class = "nf" > mvfile< / span > < span class = "p" > (< / span > < span class = "n" > src< / span > < span class = "p" > ,< / span > < span class = "n" > dst< / span > < span class = "p" > ):< / span >
< span class = "k" > if< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > path< / span > < span class = "o" > .< / span > < span class = "n" > isdir< / span > < span class = "p" > (< / span > < span class = "n" > dst< / span > < span class = "p" > ):< / span >
< span class = "n" > dst< / span > < span class = "o" > =< / span > < span class = "n" > joinpaths< / span > < span class = "p" > (< / span > < span class = "n" > dst< / span > < span class = "p" > ,< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > path< / span > < span class = "o" > .< / span > < span class = "n" > basename< / span > < span class = "p" > (< / span > < span class = "n" > src< / span > < span class = "p" > ))< / span >
< span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > rename< / span > < span class = "p" > (< / span > < span class = "n" > src< / span > < span class = "p" > ,< / span > < span class = "n" > dst< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "n" > dst< / span >
< div class = "viewcode-block" id = "remove" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.sysutils.remove" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > remove< / span > < span class = "p" > (< / span > < span class = "n" > target< / span > < span class = "p" > ):< / span >
< span class = "k" > if< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > path< / span > < span class = "o" > .< / span > < span class = "n" > isdir< / span > < span class = "p" > (< / span > < span class = "n" > target< / span > < span class = "p" > )< / span > < span class = "ow" > and< / span > < span class = "ow" > not< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > path< / span > < span class = "o" > .< / span > < span class = "n" > islink< / span > < span class = "p" > (< / span > < span class = "n" > target< / span > < span class = "p" > ):< / span >
< span class = "n" > shutil< / span > < span class = "o" > .< / span > < span class = "n" > rmtree< / span > < span class = "p" > (< / span > < span class = "n" > target< / span > < span class = "p" > )< / span >
< span class = "k" > else< / span > < span class = "p" > :< / span >
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< span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > unlink< / span > < span class = "p" > (< / span > < span class = "n" > target< / span > < span class = "p" > )< / span > < / div >
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< div class = "viewcode-block" id = "linktree" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.sysutils.linktree" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > linktree< / span > < span class = "p" > (< / span > < span class = "n" > src< / span > < span class = "p" > ,< / span > < span class = "n" > dst< / span > < span class = "p" > ):< / span >
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< span class = "n" > runcmd< / span > < span class = "p" > ([< / span > < span class = "s2" > " /bin/cp" < / span > < span class = "p" > ,< / span > < span class = "s2" > " -alx" < / span > < span class = "p" > ,< / span > < span class = "n" > src< / span > < span class = "p" > ,< / span > < span class = "n" > dst< / span > < span class = "p" > ])< / span > < / div >
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< span class = "k" > def< / span > < span class = "nf" > unquote< / span > < span class = "p" > (< / span > < span class = "n" > s< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "s1" > ' ' < / span > < span class = "o" > .< / span > < span class = "n" > join< / span > < span class = "p" > (< / span > < span class = "n" > shlex< / span > < span class = "o" > .< / span > < span class = "n" > split< / span > < span class = "p" > (< / span > < span class = "n" > s< / span > < span class = "p" > ))< / span >
< span class = "k" > class< / span > < span class = "nc" > UnquotingConfigParser< / span > < span class = "p" > (< / span > < span class = "n" > ConfigParser< / span > < span class = "p" > ):< / span >
< span class = "sd" > " " " A ConfigParser, only with unquoting of the values." " " < / span >
< span class = "c1" > # pylint: disable=arguments-differ< / span >
< span class = "k" > def< / span > < span class = "nf" > get< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "o" > *< / span > < span class = "n" > args< / span > < span class = "p" > ,< / span > < span class = "o" > **< / span > < span class = "n" > kwargs< / span > < span class = "p" > ):< / span >
< span class = "n" > ret< / span > < span class = "o" > =< / span > < span class = "nb" > super< / span > < span class = "p" > ()< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "o" > *< / span > < span class = "n" > args< / span > < span class = "p" > ,< / span > < span class = "o" > **< / span > < span class = "n" > kwargs< / span > < span class = "p" > )< / span >
< span class = "k" > if< / span > < span class = "n" > ret< / span > < span class = "p" > :< / span >
< span class = "n" > ret< / span > < span class = "o" > =< / span > < span class = "n" > unquote< / span > < span class = "p" > (< / span > < span class = "n" > ret< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "n" > ret< / span >
< span class = "k" > def< / span > < span class = "nf" > flatconfig< / span > < span class = "p" > (< / span > < span class = "n" > filename< / span > < span class = "p" > ):< / span >
< span class = "sd" > " " " Use UnquotingConfigParser to read a flat config file (without< / span >
< span class = "sd" > section headers) by adding a section header.< / span >
< span class = "sd" > " " " < / span >
< span class = "k" > with< / span > < span class = "nb" > open< / span > < span class = "p" > (< / span > < span class = "n" > filename< / span > < span class = "p" > ,< / span > < span class = "s1" > ' r' < / span > < span class = "p" > )< / span > < span class = "k" > as< / span > < span class = "n" > conffh< / span > < span class = "p" > :< / span >
< span class = "n" > conftext< / span > < span class = "o" > =< / span > < span class = "s2" > " [main]< / span > < span class = "se" > \n< / span > < span class = "s2" > " < / span > < span class = "o" > +< / span > < span class = "n" > conffh< / span > < span class = "o" > .< / span > < span class = "n" > read< / span > < span class = "p" > ()< / span >
< span class = "n" > config< / span > < span class = "o" > =< / span > < span class = "n" > UnquotingConfigParser< / span > < span class = "p" > ()< / span >
< span class = "n" > config< / span > < span class = "o" > .< / span > < span class = "n" > read_string< / span > < span class = "p" > (< / span > < span class = "n" > conftext< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "n" > config< / span > < span class = "p" > [< / span > < span class = "s1" > ' main' < / span > < span class = "p" > ]< / span >
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< span class = "k" > def< / span > < span class = "nf" > read_tail< / span > < span class = "p" > (< / span > < span class = "n" > path< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "p" > ):< / span >
< span class = "sd" > " " " Read up to `size` kibibytes from the end of a file" " " < / span >
< span class = "c1" > # NOTE: In py3 text files are unicode, not bytes so we have to open it as bytes< / span >
< span class = "k" > with< / span > < span class = "nb" > open< / span > < span class = "p" > (< / span > < span class = "n" > path< / span > < span class = "p" > ,< / span > < span class = "s2" > " rb" < / span > < span class = "p" > )< / span > < span class = "k" > as< / span > < span class = "n" > f< / span > < span class = "p" > :< / span >
< span class = "k" > return< / span > < span class = "n" > _read_file_end< / span > < span class = "p" > (< / span > < span class = "n" > f< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > _read_file_end< / span > < span class = "p" > (< / span > < span class = "n" > f< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "p" > ):< / span >
< span class = "sd" > " " " Read the end of a file< / span >
< span class = "sd" > This skips to the next line to avoid starting in the middle of a unicode character.< / span >
< span class = "sd" > And returns " " in the case of a UnicodeDecodeError< / span >
< span class = "sd" > " " " < / span >
< span class = "n" > f< / span > < span class = "o" > .< / span > < span class = "n" > seek< / span > < span class = "p" > (< / span > < span class = "mi" > 0< / span > < span class = "p" > ,< / span > < span class = "mi" > 2< / span > < span class = "p" > )< / span >
< span class = "n" > end< / span > < span class = "o" > =< / span > < span class = "n" > f< / span > < span class = "o" > .< / span > < span class = "n" > tell< / span > < span class = "p" > ()< / span >
< span class = "k" > if< / span > < span class = "n" > end< / span > < span class = "o" > < < / span > < span class = "mi" > 1024< / span > < span class = "o" > *< / span > < span class = "n" > size< / span > < span class = "p" > :< / span >
< span class = "n" > f< / span > < span class = "o" > .< / span > < span class = "n" > seek< / span > < span class = "p" > (< / span > < span class = "mi" > 0< / span > < span class = "p" > ,< / span > < span class = "mi" > 0< / span > < span class = "p" > )< / span >
< span class = "k" > else< / span > < span class = "p" > :< / span >
< span class = "n" > f< / span > < span class = "o" > .< / span > < span class = "n" > seek< / span > < span class = "p" > (< / span > < span class = "n" > end< / span > < span class = "o" > -< / span > < span class = "p" > (< / span > < span class = "mi" > 1024< / span > < span class = "o" > *< / span > < span class = "n" > size< / span > < span class = "p" > ))< / span >
< span class = "n" > data< / span > < span class = "o" > =< / span > < span class = "n" > f< / span > < span class = "o" > .< / span > < span class = "n" > read< / span > < span class = "p" > ()< / span >
< span class = "k" > try< / span > < span class = "p" > :< / span >
< span class = "c1" > # Find the first newline in the block< / span >
< span class = "n" > newline< / span > < span class = "o" > =< / span > < span class = "nb" > min< / span > < span class = "p" > (< / span > < span class = "mi" > 1< / span > < span class = "o" > +< / span > < span class = "n" > data< / span > < span class = "o" > .< / span > < span class = "n" > find< / span > < span class = "p" > (< / span > < span class = "sa" > b< / span > < span class = "s1" > ' < / span > < span class = "se" > \n< / span > < span class = "s1" > ' < / span > < span class = "p" > ),< / span > < span class = "nb" > len< / span > < span class = "p" > (< / span > < span class = "n" > data< / span > < span class = "p" > ))< / span >
< span class = "n" > text< / span > < span class = "o" > =< / span > < span class = "n" > data< / span > < span class = "p" > [< / span > < span class = "n" > newline< / span > < span class = "p" > :]< / span > < span class = "o" > .< / span > < span class = "n" > decode< / span > < span class = "p" > (< / span > < span class = "s2" > " UTF-8" < / span > < span class = "p" > )< / span >
< span class = "k" > except< / span > < span class = "ne" > UnicodeDecodeError< / span > < span class = "p" > :< / span >
< span class = "k" > return< / span > < span class = "s2" > " " < / span >
< span class = "k" > return< / span > < span class = "n" > text< / span >
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< / pre > < / div >
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< / div >
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< / div >
< footer >
< hr / >
< div role = "contentinfo" >
< p >
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© Copyright 2018, Red Hat, Inc.
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< / p >
< / div >
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Built with < a href = "http://sphinx-doc.org/" > Sphinx< / a > using a < a href = "https://github.com/rtfd/sphinx_rtd_theme" > theme< / a > provided by < a href = "https://readthedocs.org" > Read the Docs< / a > .
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< / footer >
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< / div >
< / div >
< / section >
< / div >
< script type = "text/javascript" >
jQuery(function () {
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SphinxRtdTheme.Navigation.enable(true);
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});
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< / script >
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< / body >
< / html >
