Users can't be bothered to keep their software up to date, so we must do it for them. Whenever any git command is invoked, this patch checks for new releases of git at kernel.org, and automatically upgrades your version of git. Signed-off-by: Sverre Rabbelier <srabbelier@xxxxxxxxx> Signed-off-by: Sam Vilain <sam@xxxxxxxxxx> Signed-off-by: Shawn O. Pearce <spearce@xxxxxxxxxxx> Signed-off-by: Nick Edelen <sirnot@xxxxxxxxx> Signed-off-by: "J.H." <warthog9@xxxxxxxxxx> Signed-off-by: Brandon Casey <drafnel@xxxxxxxxx> Signed-off-by: Jeff King <peff@xxxxxxxx> --- .gitignore | 1 + Makefile | 1 + git-autoupdate.perl | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++ git.c | 9 +++++++- 4 files changed, 68 insertions(+), 1 deletions(-) create mode 100644 git-autoupdate.perl diff --git a/.gitignore b/.gitignore index cf0d8b9..5a2703d 100644 --- a/.gitignore +++ b/.gitignore @@ -10,6 +10,7 @@ git-annotate git-apply git-archimport git-archive +git-autoupdate git-bisect git-bisect--helper git-blame diff --git a/Makefile b/Makefile index ae4b9fc..ba386a4 100644 --- a/Makefile +++ b/Makefile @@ -335,6 +335,7 @@ SCRIPT_SH += git-submodule.sh SCRIPT_SH += git-web--browse.sh SCRIPT_PERL += git-add--interactive.perl +SCRIPT_PERL += git-autoupdate.perl SCRIPT_PERL += git-difftool.perl SCRIPT_PERL += git-archimport.perl SCRIPT_PERL += git-cvsexportcommit.perl diff --git a/git-autoupdate.perl b/git-autoupdate.perl new file mode 100644 index 0000000..c8ca10b --- /dev/null +++ b/git-autoupdate.perl @@ -0,0 +1,58 @@ +#!/usr/bin/perl + +use LWP::Simple; +use strict; + +my $ROOT = "http://kernel.org/pub/software/scm/git";; + +my $us = our_git_version(); +my $them = latest_git_version(); + +if (compare_versions($us, $them) < 0) { + print STDERR <<EOF; +A new version of git is available! Auto-installing version $them. +EOF +} +else { + exit 0; +} + +upgrade($them); +exit 42; + +sub our_git_version { + local $_ = `git version`; + /^git version (.*?)(\.\d+\.g[a-f0-9]+)?(\.dirty)?$/ + or die "unable to read git version: $_"; + return $1; +} + +sub latest_git_version { + local $_ = get("$ROOT/"); + my @versions = /git-([0-9.]+)\.tar\.gz/g + or die "unable to find any git versions at $ROOT"; + # git version numbers have always sorted lexicographically so far, + # so let's just assume that will be the case forever + return (sort @versions)[-1]; +} + +sub compare_versions { + # let's assume lexicographical sorting again + return $_[0] cmp $_[1]; +} + +sub upgrade { + my $version = shift; + my $fn = "git-$version.tar.gz"; + getstore("$ROOT/$fn", "/tmp/$fn") == 200 + or die "unable to fetch $ROOT/$fn"; + my $rc = system qq( + cd /tmp && + gunzip -c $fn | tar xf - && + cd git-$version && + git config-mak >config.mak && + make install + ); + $rc == 0 or die "failed to upgrade git"; + system("less /tmp/git-$version/RelNotes"); +} diff --git a/git.c b/git.c index 01ddf06..959ad52 100644 --- a/git.c +++ b/git.c @@ -462,10 +462,17 @@ int main(int argc, const char **argv) if (!getenv("GIT_NOSPLASH") && !(argv[1] && !strcmp(argv[1], "splash"))) { const char *a[] = { "splash", NULL }; - const char *e[] = { "GIT_NOSPLASH=1", NULL }; + const char *e[] = { "GIT_NOSPLASH=1", "GIT_NOAUTOUPDATE=1", NULL }; run_command_v_opt_cd_env(a, RUN_GIT_CMD, NULL, e); } + if (!getenv("GIT_NOAUTOUPDATE")) { + const char *a[] = { "autoupdate", NULL }; + const char *e[] = { "GIT_NOSPLASH=1", "GIT_NOAUTOUPDATE=1", NULL }; + if (run_command_v_opt_cd_env(a, RUN_GIT_CMD, NULL, e) == 42) + exit(run_command_v_opt_cd_env(argv, 0, NULL, e)); + } + /* * "git-xxxx" is the same as "git xxxx", but we obviously: * -- 1.6.5.1.3.g9d77a -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html