# along with this program. If not, see <http://www.gnu.org/licenses/>.
# example usages:
-# ../nailing-cargo/nailing-caretwgo make
+# ../nailing-cargo/nailing-cargo make
# ../nailing-cargo/nailing-cargo cargo build
-# CARGO='../nailing-cargo/nailing-cargo cargo' make
# Why do we need this ?
#
# https://stackoverflow.com/questions/33025887/how-to-use-a-local-unpublished-crate
# https://github.com/rust-lang/cargo/issues/1481
-
-#: Cargo.nail:
+# Options:
+# -v Increase verbosity. Default is 1.
+# -q Set verbosity ot 0.
+# -D Increase amount of debugging dump.
+#
+# -n "No action": stop after writing Cargo.toml.nailing~
+# everywhere, and do not run any build command.
+#
+# -T<arch> --target=<arch>
+# Specify target architecture. If <arch> starts with a
+# capital ascii letter, is an alias for some other arch
+# looked up in Cargo.nail and then in the builtin list:
+# RPI arm-unknown-linux-gnueabihf
+# Translates to a --target= option to the ultimate command,
+# unless that is a cargo subcommand which would reject it.
+#
+# -u | --cargo-lock-update
+# -U | --no-cargo-lock-update
+# Arranges to do a dance to allow Cargo.lock (or
+# alternative) to be updated in the source directory.
+#
+# The Cargo.lock and Cargo.toml are copied to the build
+# directory along with a skeleton just big enough to fool
+# cargo. After cargo has run, the resulting Cargo.lock is
+# copied back to the source tree.
+#
+# Makes no sense with in-tree builds.
+#
+# Default is no update unless the ultimate command is a
+# cargo subcommand which we know needs it.
+#
+# -m | --cargo-manifest-args
+# -M | --no-cargo-manifest-args
+# Controls whether we add cargo command line options
+# relating to finding Cargo.toml, to the command to
+# run.
#
+# Default is true if we are doing an out-of- tree build,
+# unless we are updating the Cargo.lock (in which case the
+# only relevant files are to be found in the build directory).
+#
+# The arguments are
+# --manifest-path=<path/to/Cargo.toml>
+# --locked
+# --target-dir=target
+#
+# -T | --no-cargo-target-arg
+# -t | --cargo-target-arg
+# Suppress --target (or un-suppress it). Only useful with -m.
+# Done automatically when nailing-cargo sees that the cargo
+# subcommand is one which needs it, eg `fetch'.
+#
+# --online | -o
+# --offline | -O
+# Whether to allow cargo to make network access.
+# (nailing-cargo always passes --offline to cargo, unless
+# --online is in force). The default is offline,
+# unless the cargo subcommand is one which implies
+# online (currently, `fetch').
+#
+# Cargo.nail:
+#
+# # Adds each <subdir> to the list of directories whose
+# # Cargo.toml is to be nailed, and also arranges to use
+# # the package found there for other directories if
+# # no other source of that package is evident in Cargo.nail.
+# subdirs = [
+# "<subdir>"
+# ...
+# ]
+# or:
+# subdirs = """
+# "<subdir>"
+# ...
+# """
+#
+# # Adds <subdir> to the list of directories whose Cargo.toml
+# # is to be nailed, and overrides any other nailing for <package>
# [packages]
-# package = subdir
-# package = { subdir = ... }
+# <package> = <subdir>
+# <package> = { <subdir> = ... }
+#
+# Configuration is read from
#
-# [subdirs]
-# subdir
+# /etc/nailing-cargo/cfg.toml
+# ~/.nailing-cargo.toml
+# ./.nailing-cargo.toml
+# ../Nailing-Cargo.toml
+# ../Cargo.nail
+#
+# To control use of alternative Cargo.lock filename:
+# [alt_cargolock]
+#
+# file = true # equivalent to "Cargo.lock.example"
+# file = false # disables this feature
+# file = "<some leafname>"
+#
+# force = false # default, uses alt file only if it already exists
+# force = true # always uses alt file; creation would make Cargo.lock
+#
+# (you can also specify just alt_cargo_lock instead of alt_cargo_lock.file)
+#
+# To enable out of tree builds:
+# [oot]
+# dir = "<build-directory>" # default is Build, if use is specified
+# and then
+# use = "really"
+# user = "<someuser>"
+# or
+# use = "ssh"
+# user = "<user>@host" # NB must still share a filesystem!
+# or
+# use = "command_args"
+# command = ["<command>", "<which works like>", "nice"]
+# or
+# use = "command_sh"
+# command = ["<command>", "<which work like>", "sh -c"]
+# or
+# use = "null"
+#
+# Other settings:
+# [misc]
+# online = true # forces default to be --online
+# online = false # forces default to be --offline
+#
+# Limitations:
+#
+# Always dirties everyone's Cargo.toml, but tries to put them
+# back (if not, running it again should fix it). Cannnot be
+# fixed without changes to cargo.
+#
+# Out of tree builds require a unified filesystem view: eg,
+# different users on the same host, NFS, or something. This
+# could be improved.
+#
+# Alternative Cargo.lock file must currently be a leafname.
+# I think this just involves review to check other values work.
+#
+# Alternative Cargo.lock file must be on smae filesystem.
+# This is not so easy; we would want the existing algorithm but
+# a fallback for this case.
+#
+# Cargo.nail unconditionally looked for in ..
+# Ideally should be configurable, and also perhaps be able
+# to combine multiple Cargo.nail files ?
+#
+# Env vars we pass to the command:
+# NAILINGCARGO_WORKSPHERE absolute path of invocation ..
+# NAILINGCARGO_MANIFEST_DIR absolute path of invocation .
+# NAILINGCARGO_BUILDSPHERE only if out of tree: abs parent of build dir
+# NAILINGCARGO_BUILD_DIR absolute path of build dir (even if = src)
+
+
+our $self;
use strict;
-use TOML;
use POSIX;
+use Types::Serialiser;
+
+our %archmap = (
+ RPI => 'arm-unknown-linux-gnueabihf',
+);
+
+BEGIN {
+ $self = $0; $self =~ s{^.*/(?=.)}{};
+ my $deref = $0;
+ while ($deref =~ m{^/}) {
+ my $link = readlink $deref;
+ if (!defined $link) {
+ $! == EINVAL
+ or die "$self: checking our script location $deref: $!\n";
+ $deref =~ s{/[^/]+$}{}
+ or die "$self: unexpected script path: $deref\n";
+ unshift @INC, $deref."/TOML-Tiny/lib";
+ last;
+ }
+ last if $link !~ m{^/};
+ $deref = $link;
+ }
+}
+
use Fcntl qw(LOCK_EX);
-use Cwd;
+use File::Compare;
+use TOML::Tiny::Faithful;
+
+our $src_absdir = getcwd() // die "$self: getcwd failed: $!\n";
+
+our $worksphere = $src_absdir;
+$worksphere =~ s{/([^/]+)$}{}
+ or die "$self: cwd \`$worksphere' unsupported!\n";
+our $subdir = $1; # leafname
-my $self = $0; $self =~ s{^.*/(?=.)}{};
+our $lockfile = "../.nailing-cargo.lock";
-my $worksphere = fastcwd // die "$self: Cwd::fastcwd failed: $!\n";
-$worksphere =~ s{/[^/]+}{} or die "$self: cwd \`$worksphere' unsupported!\n";
-our $lockfile = "../.nailing-cargo-sphere.lock";
+our $cargo_lock_update;
+our $cargo_manifest_args;
+our $cargo_target_arg=1;
+our $alt_cargo_lock;
+our $online;
our @configs;
+our $verbose=1;
+our ($noact,$dump);
+our $target;
sub read_or_enoent ($) {
- my ($fn) = @_;
- if (!open R, '<', $fn) {
- return undef if $!==ENOENT;
- die "$self: open $fn: $!\n";
- }
- local ($/) = undef;
- my ($r) = <R> // die "$self: read $fn: $!\n";
- $r;
+ my ($fn) = @_;
+ if (!open R, '<', $fn) {
+ return undef if $!==ENOENT;
+ die "$self: open $fn: $!\n";
+ }
+ local ($/) = undef;
+ my ($r) = <R> // die "$self: read $fn: $!\n";
+ $r;
+}
+
+sub stat_exists ($$) {
+ my ($fn, $what) = @_;
+ if (stat $fn) { return 1; }
+ $!==ENOENT or die "$self: stat $what: $fn: $!\n";
+ return 0;
}
sub toml_or_enoent ($$) {
- my ($f,$what) = @_;
- my $toml = read_or_enoent($f) // return;
- my ($toml,$e) = from_toml($toml);
- die "$self: parse TOML: $what: $f: $e\n" if defined $e;
- $toml;
+ my ($f,$what) = @_;
+ my $toml = read_or_enoent($f) // return;
+ print STDERR "Read TOML from $f\n" if $dump;
+ my ($v,$e) = from_toml($toml);
+ if (!defined $v) {
+ chomp $e;
+ die "$self: parse TOML: $what: $f: $e\n";
+ }
+ die "$e ?" if length $e;
+ $v;
}
sub load1config ($) {
- my ($f) = @_;
- my $toml = toml_or_enoent($f, "config file");
- push @configs, $toml if defined $toml;
+ my ($f) = @_;
+ my $toml = toml_or_enoent($f, "config file");
+ push @configs, $toml if defined $toml;
}
sub loadconfigs () {
- my $cfgleaf = ".nailing-cargo-cfg.toml";
- load1config("/etc/nailing-cargo/cfg.toml");
- load1config("$worksphere/$cfgleaf");
- load1config("$HOME/$cfgleaf") if defined $HOME;
+ my $dotfile = ".nailing-cargo.toml";
+ load1config("../Nailing-Cargo.toml");
+ load1config($dotfile);
+ load1config("$ENV{HOME}/$dotfile") if defined $ENV{HOME};
+ load1config("/etc/nailing-cargo/cfg.toml");
}
-sub getcfg ($$) {
- my ($k, $def) = @_;
- foreach my $cfg (@configs) {
- my $v = $cfg{$k};
- return $v if defined $v;
- }
- return $df;
-}
-
-sub lock () {
- for (;;) {
- open LOCK, ">", $lockfile or die "$0: open/create $lockfile: $!\n";
- flock LOCK, LOCK_EX or die "$0: lock $lockfile: $!\n";
- my @fstat = stat LOCK or die "$0: fstat: $!\n";
- my @stat = stat $lockfile;
- if (!@stat) {
- next if $! == ENOENT;
- die "$0: stat $lockfile: $!\n";
- }
- last if "@fstat[0..5]" == "@stat[0..5]";
+sub unlink_or_enoent ($) { unlink $_[0] or $!==ENOENT; }
+
+sub same_file ($$) {
+ my ($x,$y) = @_;
+ "@$x[0..5]" eq "@$y[0..5]";
+}
+
+sub takelock () {
+ for (;;) {
+ open LOCK, ">", $lockfile or die "$self: open/create $lockfile: $!\n";
+ flock LOCK, LOCK_EX or die "$self: lock $lockfile: $!\n";
+ my @fstat = stat LOCK or die "$self: fstat: $!\n";
+ my @stat = stat $lockfile;
+ if (!@stat) {
+ next if $! == ENOENT;
+ die "$self: stat $lockfile: $!\n";
}
+ last if same_file(\@fstat,\@stat);
+ }
}
sub unlock () {
- unlink $lockfile or die "$0: removing lockfile: $!\n";
+ unlink $lockfile or die "$self: removing lockfile: $!\n";
}
our $nail;
-sub readnail () {
- my $nailfile = "../Cargo.nail";
- open N, '<', $nailfile or die "$0: open $nailfile: $!\n";
- local ($/) = undef;
- my $toml = <N> // die "$0: read $nailfile: $!";
- my $transformed;
- if ($toml !~ m{^\s*\[/}m &&
- $toml !~ m{^[^\n\#]*\=}m &&
- # old non-toml syntax
- $toml =~ s{^[ \t]*([-_0-9a-z]+)[ \t]+(\S+)[ \t]*$}{$1 = $2}mig) {
- $toml =~ s{^}{[packages\]\n};
- $transformed = 1;
+sub badcfg {
+ my $m = pop @_;
+ $" = '.';
+ die "$self: config key \`@_': $m\n";
+}
+
+sub cfg_uc {
+ foreach my $cfg (@configs) {
+ my $v = $cfg;
+ foreach my $k (@_) {
+ last unless defined $v;
+ ref($v) eq 'HASH' or badcfg @_, "parent key \`$k' is not a hash";
+ $v = $v->{$k};
}
- my $e;
- ($nail,$e) = from_toml($toml);
- if (defined $e) {
- if ($transformed) {
- $toml =~ s/^/ /mg;
- print STDERR "$self: $nailfile transformed into TOML:\n$toml\n";
- }
- die "$0: parse $nailfile: $e\n";
+ return $v if defined $v;
+ }
+ return undef;
+}
+
+sub cfge {
+ my $exp = shift @_;
+ my $v = cfg_uc @_;
+ my $got = ref($v) || 'scalar';
+ return $v if !defined($v) || $got eq $exp;
+ badcfg @_, "found \L$got\E, expected \L$exp\E";
+ # ^ toml doesn't make refs to scalars, so this is unambiguous
+}
+
+sub cfgn {
+ my $exp = shift @_;
+ (cfge $exp, @_) // badcfg @_, "missing";
+}
+
+sub cfgs { cfge 'scalar', @_ }
+sub cfgsn { cfgn 'scalar', @_ }
+
+sub cfg_bool {
+ my $v = cfg_uc @_;
+ return $v if !defined($v) || Types::Serialiser::is_bool $v;
+ badcfg @_, "expected boolean";
+}
+
+sub cfgn_list {
+ my $l = cfge 'ARRAY', @_;
+ foreach my $x (@$l) {
+ !ref $x or badcfg @_, "list contains non-scalar element";
+ }
+ @$l
+}
+
+sub readnail () {
+ my $nailfile = "../Cargo.nail";
+ open N, '<', $nailfile or die "$self: open $nailfile: $!\n";
+ local ($/) = undef;
+ my $toml = <N> // die "$self: read $nailfile: $!";
+ my $transformed;
+ if ($toml !~ m{^\s*\[/}m &&
+ $toml !~ m{^[^\n\#]*\=}m &&
+ # old non-toml syntax
+ $toml =~ s{^[ \t]*([-_0-9a-z]+)[ \t]+(\S+)[ \t]*$}{$1 = \"$2\"}mig) {
+ $toml =~ s{^}{[packages\]\n};
+ my @sd;
+ $toml =~ s{^[ \t]*\-[ \t]*\=[ \t]*(\"[-_0-9a-z]+\"\n?)$}{
+ push @sd, $1; '';
+ }mige;
+ $toml = "subdirs = [\n".(join '', map { "$_\n" } @sd)."]\n".$toml;
+ $transformed = 1;
+ }
+ my $e;
+ ($nail,$e) = from_toml($toml);
+ if (!defined $nail) {
+ if ($transformed) {
+ $toml =~ s/^/ /mg;
+ print STDERR "$self: $nailfile transformed into TOML:\n$toml\n";
}
- die unless defined $nail;
+ $/="\n"; chomp $e;
+ die "$self: parse $nailfile: $e\n";
+ }
+ die "$e ?" if length $e;
+
+ $nail->{subdirs} //= [ ];
+
+ if (!ref $nail->{subdirs}) {
+ $nail->{subdirs} = [
+ grep /^[^\#]/,
+ map { s/^\s+//; s/\s+$//; $_; }
+ split m{\n},
+ $nail->{subdirs}
+ ];
+ }
+
+ unshift @configs, $nail;
+}
+
+our @alt_cargo_lock_stat;
+
+sub consider_alt_cargo_lock () {
+ my @ck = qw(alt_cargo_lock);
+ # User should *either* have Cargo.lock in .gitignore,
+ # or expect to commit Cargo.lock.example ($alt_cargo_lock)
+
+ $alt_cargo_lock = (cfg_uc @ck);
+
+ my $force = 0;
+ if (defined($alt_cargo_lock) && ref($alt_cargo_lock) eq 'HASH') {
+ $force = cfg_bool qw(alt_cargo_lock force);
+ my @ck = qw(alt_cargo_lock file);
+ $alt_cargo_lock = cfg_uc @ck;
+ }
+ $alt_cargo_lock //= Types::Serialiser::true;
+
+ if (Types::Serialiser::is_bool $alt_cargo_lock) {
+ if (!$alt_cargo_lock) { $alt_cargo_lock = undef; return; }
+ $alt_cargo_lock = 'Cargo.lock.example';
+ }
+
+ if (ref($alt_cargo_lock) || $alt_cargo_lock =~ m{/}) {
+ badcfg @ck, "expected boolean, or leafname";
+ }
+
+ if (!stat_exists $alt_cargo_lock, "alt_cargo_lock") {
+ $alt_cargo_lock = undef unless $force;
+ return;
+ }
+
+ @alt_cargo_lock_stat = stat _;
+}
+
+our $oot_dir; # oot.dir or "Build"
+
+sub consider_oot () {
+ $oot_dir = cfgs qw(oot dir);
+ my $use = cfgs qw(oot use);
+ unless (defined($oot_dir) || defined($use)) {
+ die "$self: specified --cargo-lock-update but not out-of-tree build!\n"
+ if $cargo_lock_update;
+ $cargo_lock_update=0;
+ return;
+ }
+ $oot_dir //= 'Build';
}
our %manifests;
our %packagemap;
sub read_manifest ($) {
- my ($subdir) = @_;
- my $manifest = "../$subdir/Cargo.toml";
- if (defined $manifests{$manifesst}) {
- print STDERR
-"$self: warning: $subdir: specified more than once!\n";
- return undef;
- }
- foreach my $try ("$manifest.unnailed", "$manifest") {
- my $toml = toml_or_enoent($try, "package manifest") // next;
- my $p = $toml->{package}{name};
- if (!defined $p) {
- print STDERR
-"$self: warning: $subdir: missing package.name in $try, ignoring\n";
- next;
- }
- $manifests{$manifest} = $toml;
- return $p;
- }
+ my ($subdir) = @_;
+ my $manifest = "../$subdir/Cargo.toml";
+ print STDERR "$self: reading $manifest...\n" if $verbose>=4;
+ if (defined $manifests{$manifest}) {
+ print STDERR
+ "$self: warning: $subdir: specified more than once!\n";
return undef;
+ }
+ foreach my $try ("$manifest.unnailed", "$manifest") {
+ my $toml = toml_or_enoent($try, "package manifest") // next;
+ my $p = $toml->{package}{name};
+ if (!defined $p) {
+ print STDERR
+ "$self: warning: $subdir: missing package.name in $try, ignoring\n";
+ next;
+ }
+ $manifests{$manifest} = $toml;
+ return $p;
+ }
+ return undef;
}
sub readorigs () {
- foreach my $p (keys %{ $nail->{packages} }) {
- my $v = $nail->{packages}{$p};
- my $subdir = ref($v) ? $v->{subdir} : $v;
- my $gotpackage = read_manifest($subdir) // '<nothing!>';
- if ($gotpackage ne $p) {
- print STDERR
- "$self: warning: honouring Cargo.nail [packages.$subdir]=$p even though $subdir contains package $gotpackage!\n";
- }
- die if defined $packagemap{$p};
- $packagemap{$p} = $subdir;
+ foreach my $p (keys %{ $nail->{packages} }) {
+ my $v = $nail->{packages}{$p};
+ my $subdir = ref($v) ? $v->{subdir} : $v;
+ my $gotpackage = read_manifest($subdir) // '<nothing!>';
+ if ($gotpackage ne $p) {
+ print STDERR
+ "$self: warning: honouring Cargo.nail packages.$subdir=$p even though $subdir contains package $gotpackage!\n";
}
- foreach my $subdir (@{ $nail->{subdirs} }) {
- my $gotpackage = read_manifest($subdir);
- if (!defined $gotpackage) {
- print STDERR
+ die if defined $packagemap{$p};
+ $packagemap{$p} = $subdir;
+ }
+ foreach my $subdir (@{ $nail->{subdirs} }) {
+ my $gotpackage = read_manifest($subdir);
+ if (!defined $gotpackage) {
+ print STDERR
"$self: warning: ignoring subdir $subdir which has no Cargo.toml\n";
- next;
+ next;
+ }
+ $packagemap{$gotpackage} //= $subdir;
+ }
+}
+
+sub calculate () {
+ foreach my $p (sort keys %packagemap) {
+ print STDERR "$self: package $p in $packagemap{$p}\n" if $verbose>=2;
+ }
+ foreach my $mf (keys %manifests) {
+ my $toml = $manifests{$mf};
+ foreach my $k (qw(dependencies build-dependencies dev-dependencies)) {
+ my $deps = $toml->{$k};
+ next unless $deps;
+ foreach my $p (keys %packagemap) {
+ my $info = $deps->{$p};
+ next unless defined $info;
+ $deps->{$p} = $info = { } unless ref $info;
+ delete $info->{version};
+ $info->{path} = $worksphere.'/'.$packagemap{$p};
+ }
+ }
+ my $nailing = "$mf.nailing~";
+ unlink_or_enoent $nailing or die "$self: remove old $nailing: $!\n";
+ open N, '>', $nailing or die "$self: create new $nailing: $!\n";
+ print N to_toml($toml) or die "$self: write new $nailing: $!\n";
+ close N or die "$self: close new $nailing: $!\n";
+ }
+}
+
+sub addargs () {
+ $online //= cfg_bool qw(misc online);
+
+ if (@ARGV>=2 &&
+ $ARGV[0] =~ m{\bcargo\b}) {
+ if ($ARGV[1] =~ m/^(?:generate-lockfile|update)$/) {
+ $cargo_lock_update //= 1;
+ $target = undef;
+ }
+ if ($ARGV[1] =~ m/^(?:fetch)$/) {
+ $cargo_target_arg=0;
+ $online //= 1;
+ }
+ }
+ $cargo_lock_update //= 0;
+ $cargo_manifest_args //=
+ (defined $oot_dir) && !$cargo_lock_update;
+
+ $online //= 0;
+
+ if ($cargo_manifest_args) {
+ push @ARGV, "--manifest-path=${src_absdir}/Cargo.toml",
+ qw(--locked);
+ push @ARGV, qw(--target-dir=target) if $cargo_target_arg;
+ }
+
+ if (defined $target) {
+ if ($target =~ m{^[A-Z]}) {
+ $target = (cfgs 'arch', $target) // $archmap{$target}
+ // die "$self: --target=$target alias specified; not in cfg or map\n";
+ }
+ push @ARGV, "--target=$target";
+ }
+
+ push @ARGV, "--offline" unless $online;
+}
+
+our $oot_absdir;
+our $build_absdir; # .../Build/<subdir>
+
+sub oot_massage_cmdline () {
+ return unless defined $oot_dir;
+
+ my $use = cfgs qw(oot use);
+ $oot_absdir = ($oot_dir !~ m{^/} ? "$worksphere/" : ""). $oot_dir;
+ $build_absdir = "$oot_absdir/$subdir";
+
+ my ($pre,$post);
+ my @xargs;
+ if (!$cargo_lock_update) {
+ push @xargs, $build_absdir;
+ ($pre, $post) = ('cd "$1"; shift; ', '');
+ } else {
+ push @xargs, $oot_absdir, $subdir, $src_absdir;
+ $pre = <<'END';
+ cd "$1"; shift;
+ mkdir -p -- "$1"; cd "$1"; shift;
+ cp -- "$1"/Cargo.toml
+END
+ $pre .= <<'ENDLK' if stat_exists 'Cargo.lock', 'working cargo lockfile';
+ "$1"/Cargo.lock
+ENDLK
+ $pre .= <<'ENDCP';
+ .;
+ENDCP
+ $pre .= <<'ENDPRE';
+ shift;
+ mkdir -p src; >src/lib.rs; >build.rs
+ENDPRE
+ $post = <<'ENDPOST';
+ rm -r src Cargo.toml build.rs;
+ENDPOST
+ }
+ my $addpath = (cfg_uc qw(oot path_add)) //
+ $use eq 'really' ? Types::Serialiser::true : Types::Serialiser::false;
+ $addpath =
+ !Types::Serialiser::is_bool $addpath ? $addpath :
+ $addpath ? '$HOME/.cargo/bin' :
+ undef;
+ if (defined $addpath) {
+ $pre .= <<END
+ PATH=$addpath:\${PATH-/usr/local/bin:/bin:/usr/bin};
+ export PATH;
+END
+ }
+ $pre =~ s/^\s+//mg; $pre =~ s/\s+/ /g;
+ $post =~ s/^\s+//mg; $post =~ s/\s+/ /g;
+
+ my $getuser = sub { cfgsn qw(oot user) };
+ my @command;
+ my $xe = $verbose >= 2 ? 'xe' : 'e';
+ my $sh_ec = sub {
+ if (!length $post) {
+ @command = (@_, 'sh',"-${xe}c",$pre.'exec "$@"','--',@xargs);
+ } else {
+ @command = (@_, 'sh',"-${xe}c",$pre.'"$@"; '.$post,'--',@xargs);
+ }
+ push @command, @ARGV;
+ };
+ my $command_sh = sub {
+ my $quoted = join ' ', map {
+ return $_ if !m/\W/;
+ s/\'/\'\\'\'/g;
+ "'$_'"
+ } @ARGV;
+ @command = @_, "set -${xe}; $pre $quoted; $post";
+ };
+ print STDERR "$self: out-of-tree, building in: \`$build_absdir'\n"
+ if $verbose;
+ if ($use eq 'really') {
+ my $user = $getuser->();
+ my @pw = getpwnam $user or die "$self: oot.user \`$user' lookup failed\n";
+ my $homedir = $pw[7];
+ $sh_ec->('really','-u',$user,'env',"HOME=$homedir");
+ print STDERR "$self: using really to run as user \`$user'\n" if $verbose;
+ } elsif ($use eq 'ssh') {
+ my $user = $getuser->();
+ $user .= '@localhost' unless $user =~ m/\@/;
+ $command_sh->('ssh',$user);
+ print STDERR "$self: using ssh to run as \`$user'\n" if $verbose;
+ } elsif ($use eq 'command_args') {
+ my @c = cfgn_list qw(oot command);
+ $sh_ec->(@c);
+ print STDERR "$self: out-of-tree, adverbial command: @c\n" if $verbose;
+ } elsif ($use eq 'command_sh') {
+ my @c = cfgn_list qw(oot command);
+ $command_sh->(@c);
+ print STDERR "$self: out-of-tree, ssh'ish command: @c\n" if $verbose;
+ } elsif ($use eq 'null') {
+ $sh_ec->();
+ } else {
+ die "$self: oot.use mode $use not recognised\n";
+ }
+ die unless @command;
+ @ARGV = @command;
+}
+
+sub setenvs () {
+ $ENV{NAILINGCARGO_WORKSPHERE} = $worksphere;
+ $ENV{NAILINGCARGO_MANIFEST_DIR} = $src_absdir;
+ $ENV{NAILINGCARGO_BUILDSPHERE} = $oot_absdir;
+ delete $ENV{NAILINGCARGO_BUILDSPHERE} unless $oot_absdir;
+ $ENV{NAILINGCARGO_BUILD_DIR} = $build_absdir // $src_absdir;
+}
+
+our $want_uninstall;
+
+END {
+ if ($want_uninstall) {
+ local ($?);
+ foreach my $mf (keys %manifests) {
+ eval { uninstall1($mf,1); 1; } or warn "$@";
+ }
+ eval { unaltcargolock(1); 1; } or warn "$@";
+ }
+}
+
+our $cleanup_cargo_lock;
+sub makebackups () {
+ foreach my $mf (keys %manifests) {
+ link "$mf", "$mf.unnailed" or $!==EEXIST
+ or die "$self: make backup link $mf.unnailed: $!\n";
+ }
+
+ if (defined($alt_cargo_lock)) {
+ if (@alt_cargo_lock_stat) {
+ print STDERR "$self: using alt_cargo_lock `$alt_cargo_lock'..."
+ if $verbose>=3;
+ if (link $alt_cargo_lock, 'Cargo.lock') {
+ print STDERR " linked\n" if $verbose>=3;
+ } elsif ($! != EEXIST) {
+ print STDERR "\n" if $verbose>=3;
+ die "$self: make \`Cargo.lock' available as \`$alt_cargo_lock': $!\n";
+ } else {
+ print STDERR "checking quality." if $verbose>=3;
+ my @lock_stat = stat 'Cargo.lock'
+ or die "$self: stat Cargo.lock (for alt check: $!\n";
+ same_file(\@alt_cargo_lock_stat, \@lock_stat)
+ or die
+"$self: \`Cargo.lock' and alt file \`$alt_cargo_lock' both exist and are not the same file!\n";
+ }
+ $cleanup_cargo_lock = 1;
+ } else {
+ $cleanup_cargo_lock = 1;
+ # If Cargo.lock exists and alt doesn't, that means either
+ # that a previous run was interrupted, or that the user has
+ # messed up.
+ }
+ }
+}
+
+sub nailed ($) {
+ my ($mf) = @_;
+ my $nailed = "$mf.nailed~"; $nailed =~ s{/([^/]+)$}{/.$1} or die;
+ $nailed;
+}
+
+sub install () {
+ my @our_unfound_stab = stat_exists('Cargo.toml', 'local Cargo.toml')
+ ? (stat _) : ();
+ foreach my $mf (keys %manifests) {
+ if (@our_unfound_stab) {
+ if (stat_exists $mf, "manifest in to-be-nailed directory") {
+ my @mf_stab = stat _ ;
+ if ("@mf_stab[0..1]" eq "@our_unfound_stab[0..1]") {
+ @our_unfound_stab = ();
}
- $packagemap{$gotpackage} //= $subdir;
+ }
+ }
+
+ my $nailing = "$mf.nailing~";
+ my $nailed = nailed($mf);
+ my ($use, $rm);
+ my $diff;
+ if (open NN, '<', $nailed) {
+ $diff = compare($nailing, \*NN);
+ die "$self: compare $nailing and $nailed: $!" if $diff<0;
+ } else {
+ $!==ENOENT or die "$self: check previous $nailed: $!\n";
+ $diff = 1;
+ }
+ if ($diff) {
+ $use = $nailing;
+ $rm = $nailed;
+ } else {
+ $use = $nailed;
+ $rm = $nailing;
}
+ rename $use, $mf or die "$self: install nailed $use: $!\n";
+ unlink_or_enoent $rm or die "$self: remove old $rm: $!\n";
+ print STDERR "$self: nailed $mf\n" if $verbose>=3;
+ }
+
+ if (@our_unfound_stab) {
+ print STDERR
+ "$self: *WARNING* cwd is not in Cargo.nail thbough it has Cargo.toml!\n";
+ }
+}
+
+sub invoke () {
+ my $r = system @ARGV;
+ if (!$r) {
+ return 0;
+ } elsif ($r<0) {
+ print STDERR "$self: could not execute $ARGV[0]: $!\n";
+ return 127;
+ } elsif ($r & 0xff00) {
+ print STDERR "$self: $ARGV[0] failed (exit status $r)\n";
+ return $r >> 8;
+ } else {
+ print STDERR "$self: $ARGV[0] died due to signal! (wait status $r)\n";
+ return 125;
+ }
+}
+
+sub cargo_lock_update_after () {
+ if ($cargo_lock_update) {
+ # avoids importing File::Copy and the error handling is about as good
+ $!=0; $?=0;
+ my $r= system qw(cp --), "$build_absdir/Cargo.lock", "Cargo.lock";
+ die "$self: run cp: $! $?" if $r<0 || $r & 0xff;
+ die "$self: failed to update local Cargo.lock (wait status $r)\n" if $r;
+ }
+}
+
+sub uninstall1 ($$) {
+ my ($mf, $enoentok) = @_;
+ my $unnailed = "$mf.unnailed";
+ rename $unnailed, $mf or ($enoentok && $!==ENOENT)
+ or die "$self: failed to restore: rename $unnailed back to $mf: $!\n";
+}
+
+sub unaltcargolock ($) {
+ my ($enoentok) = @_;
+ return unless $cleanup_cargo_lock;
+ die 'internal error!' unless defined $alt_cargo_lock;
+
+ # we ignore $enoentok because we don't know if one was supposed to
+ # have been created.
+
+ rename('Cargo.lock', $alt_cargo_lock) or $!==ENOENT or die
+ "$self: cleanup: rename possibly-updated \`Cargo.lock' to \`$alt_cargo_lock': $!\n";
+
+ unlink 'Cargo.lock' or $!==ENOENT or die
+ "$self: cleanup: remove \`Cargo.lock' in favour of \`$alt_cargo_lock': $!\n";
+ # ^ this also helps clean up the stupid rename() corner case
+}
+
+sub uninstall () {
+ foreach my $mf (keys %manifests) {
+ my $nailed = nailed($mf);
+ link $mf, $nailed or die "$self: preserve (link) $mf as $nailed: $!\n";
+ uninstall1($mf,0);
+ }
+ unaltcargolock(0);
}
while (@ARGV && $ARGV[0] =~ m/^-/) {
- $_ = shift @ARGV;
- last if m/^--$/;
+ $_ = shift @ARGV;
+ last if m{^--$};
+ if (m{^-[^-]}) {
+ while (m{^-.}) {
+ if (s{^-v}{-}) {
+ $verbose++;
+ } elsif (s{^-q}{-}) {
+ $verbose=0;
+ } elsif (s{^-n}{-}) {
+ $noact++;
+ } elsif (s{^-D}{-}) {
+ $dump++;
+ } elsif (s{^-T(.+)}{-}s) {
+ $target = $1;
+ } elsif (s{^-([uU])}{-}) {
+ $cargo_lock_update= $1=~m/[a-z]/;
+ } elsif (s{^-([mM])}{-}) {
+ $cargo_manifest_args= $1=~m/[a-z]/;
+ } elsif (s{^-([tT])}{-}) {
+ $cargo_target_arg= $1=~m/[a-z]/;
+ } elsif (s{^-([oO])}{-}) {
+ $online= $1=~m/[a-z]/;
+ } else {
+ die "$self: unknown short option(s) $_\n";
+ }
+ }
+ } elsif (s{^--target=}{}) {
+ $target = $_;
+ } elsif (m{^--(no-)?cargo-lock-update}) {
+ $cargo_lock_update= !!$1;
+ } elsif (m{^--(no-)?cargo-manifest-args}) {
+ $cargo_manifest_args= !!$1;
+ } elsif (m{^--(no-)?cargo-target-arg}) {
+ $cargo_target_arg= !!$1;
+ } elsif (m{^--(on|off)line$}) {
+ $online = $1 eq 'on';
+ } else {
+ die "$self: unknown long option $_\n";
+ }
}
-lock();
+die "$self: need command to run\n" unless @ARGV || $noact;
+
+loadconfigs();
+takelock();
readnail();
+consider_alt_cargo_lock();
+consider_oot();
readorigs();
+calculate();
+addargs();
+our @display_cmd = @ARGV;
+oot_massage_cmdline();
+setenvs();
+
+if ($dump) {
+ eval '
+ use Data::Dumper;
+ print STDERR Dumper(\%manifests) if $dump>=2;
+ print STDERR Dumper(\%packagemap, \@ARGV,
+ { src_absdir => $src_absdir,
+ worksphere => $worksphere,
+ subdir => $subdir,
+ oot_dir => $oot_dir,
+ oot_absdir => $oot_absdir,
+ build_absdir => $build_absdir });
+ ' or die $@;
+}
+
+exit 0 if $noact;
+
+$want_uninstall = 1;
+makebackups();
+install();
+
+printf STDERR "$self: nailed (%s manifests, %s packages)%s\n",
+ (scalar keys %manifests), (scalar keys %packagemap),
+ (defined($alt_cargo_lock) and ", using `$alt_cargo_lock'")
+ if $verbose;
+
+print STDERR "$self: invoking: @display_cmd\n" if $verbose;
+my $estatus = invoke();
+
+cargo_lock_update_after();
+
+uninstall();
+$want_uninstall = 0;
+
+print STDERR "$self: unnailed. status $estatus.\n" if $verbose;
-__DATA__
-
-lock=${PWD%/*}/.nail.lock
-if [ "x$NAILING_CARGO" != "x$lock" ]; then
- NAILING_CARGO=$lock \
- exec with-lock-ex -w "$lock" "$0" "$@"
-fi
-
-exec 203<../Cargo.nail
-f=Cargo.toml
-
-sed='
-/^ *\[\(build-\)\?dependencies\]/,/^ \[/{
-'
-
-if test -e ../Cargo.nail-env; then
- . ../Cargo.nail-env
-fi
-
-exec 204<../Cargo.nail
-while read <&204 what where; do
- if [ "x$what" = x- ]; then continue; fi
- if [ "x$what" = 'x#' ]; then continue; fi
- qwhere="${where//\//\\/}"
- sed+='
- /{.*path *=/ b
- s/^'$what' *= *\(\".*\"\) *$/'$what' = { version = \1 }/;
- s#^'$what' *= *{#'$what' = { path = "'"${PWD%/*}"'/'"${qwhere}"'", #;
- /^'$what' *=/ s/version *= *\"[^"]*\"//;
- /^'$what' *=/ s/, *\([,}]\)/\1/;
- '
-done
-sed+='}
-'
-
-exec 204<../Cargo.nail
-while read <&204 what where; do
- if [ "x$what" = 'x#' ]; then continue; fi
- wf=../$where/$f
- rm -f $wf.nailing~
- sed <$wf >$wf.nailing~ "$sed"
-done
-
-exec 204<../Cargo.nail
-while read <&204 what where; do
- if [ "x$what" = 'x#' ]; then continue; fi
- wf=../$where/$f
- if ! test -e $wf.unnailed~; then
- ln $wf $wf.unnailed~
- fi
-done
-
-trap '
- set +e
- while read <&203 what where; do
- if [ "x$what" = "x#" ]; then continue; fi
- wf=../$where/$f
- if test -e $wf.unnailed~; then
- rm -f $wf.nailed~
- ln $wf $wf.nailed~
- mv -f $wf.unnailed~ $wf
- fi
- done
- echo >&2 'Unnailed'
-' EXIT
-
-exec 204<../Cargo.nail
-printf >&2 'Nailing'
-while read <&204 what where; do
- if [ "x$what" = 'x#' ]; then continue; fi
- wf=../$where/$f
- printf >&2 ' %s' "$what"
- if cmp -s $wf.nailed~ $wf.nailing~; then
- mv -f $wf.nailed~ $wf
- rm -f $wf.nailing
- else
- mv -f $wf.nailing~ $wf
- rm -f $wf.nailed
- fi
-done
-echo >&2
-
-"$@"
+exit $estatus;
~ianmdlvl / nailing-cargo.git / blobdiff