def emerge_package(pearl_env: PearlEnvironment, package: Package,
args: Namespace):
"""
Installs or updates the Pearl package.
This function is idempotent.
"""
if package.is_installed():
update_package(pearl_env, package, args=args)
else:
install_package(pearl_env, package, args=args)
def install_package(pearl_env: PearlEnvironment, package: Package,
args: Namespace):
"""
Installs the Pearl package.
"""
if package.is_installed():
raise PackageAlreadyInstalledError(
'{} package is already installed.'.format(package))
messenger.print('{cyan}* {normal}Installing {pkg} package'.format(
cyan=Color.CYAN,
normal=Color.NORMAL,
pkg=package,
))
package.dir.mkdir(parents=True, exist_ok=True)
if package.is_local():
check_and_copy(Path(package.url), package.dir)
else:
quiet = "false" if args.verbose else "true"
script = dedent("""
install_git_repo {pkgurl} {pkgdir} "" {quiet}
""").format(pkgdir=package.dir, pkgurl=package.url, quiet=quiet)
run_pearl_bash(script,
pearl_env,
input=_DEFAULT_INPUT if args.no_confirm else None)
package.vardir.mkdir(parents=True, exist_ok=True)
hook = 'post_install'
try:
_run(
hook,
pearl_env,
package,
input=_DEFAULT_INPUT if args.no_confirm else None,
enable_xtrace=(args.verbose >= 2),
enable_errexit=(not args.force),
)
except Exception as exc:
msg = "Error while performing {} hook function. Rolling back...".format(
hook)
if args.force:
message = "{}: {}".format(msg, exc.args)
if args.verbose:
messenger.exception(message)
else:
messenger.error(message)
else:
args.force = True
remove_package(
pearl_env,
package,
args=args,
)
raise HookFunctionError(msg) from exc
def info_package(pearl_env: PearlEnvironment, package: Package,
args: Namespace):
"""
Provide info about a package.
"""
requires = pearl_env.required_by(package)
messenger.print(
dedent("""
{cyan}Name{normal}: {full_name}
{cyan}Description{normal}: {description}
{cyan}Homepage{normal}: {homepage}
{cyan}URL{normal}: {url}
{cyan}Author{normal}: {author}
{cyan}License{normal}: {license}
{cyan}Operating Systems{normal}: {os}
{cyan}Keywords{normal}: {keywords}
{cyan}Installed{normal}: {installed}
{cyan}Pkg Directory{normal}: {pkg_dir}
{cyan}Var Directory{normal}: {var_dir}
{cyan}Depends on{normal}: {depends}
{cyan}Required by{normal}: {requires}
""".format(
cyan=Color.CYAN,
normal=Color.NORMAL,
full_name=package.full_name,
description=package.description,
homepage=package.homepage,
url=package.url,
author=package.author,
license=package.license,
os=tuple(o.name.lower() for o in package.os),
keywords=package.keywords,
installed=package.is_installed(),
pkg_dir=package.dir,
var_dir=package.vardir,
depends=tuple(d.full_name for d in package.depends),
requires=tuple(r.full_name for r in requires),
)))
return package, requires
def remove_package(pearl_env: PearlEnvironment, package: Package,
args: Namespace):
"""
Remove the Pearl package.
"""
if not package.is_installed():
raise PackageNotInstalledError(
'{} package has not been installed.'.format(package))
messenger.print('{cyan}* {normal}Removing {pkg} package'.format(
cyan=Color.CYAN,
normal=Color.NORMAL,
pkg=package,
))
hook = 'pre_remove'
try:
_run(
hook,
pearl_env,
package,
input=_DEFAULT_INPUT if args.no_confirm else None,
enable_xtrace=(args.verbose >= 2),
enable_errexit=(not args.force),
)
except Exception as exc:
msg = "Error while performing {} hook function".format(hook)
if not args.force:
raise HookFunctionError(msg) from exc
message = "{}: {}".format(msg, exc.args)
if args.verbose:
messenger.exception(message)
else:
messenger.error(message)
shutil.rmtree(str(package.dir))
def update_package(pearl_env: PearlEnvironment, package: Package,
args: Namespace):
"""
Updates the Pearl package.
"""
if not package.is_installed():
raise PackageNotInstalledError(
'{} package has not been installed.'.format(package))
messenger.print('{cyan}* {normal}Updating {pkg} package'.format(
cyan=Color.CYAN,
normal=Color.NORMAL,
pkg=package,
))
if package.has_url_changed():
messenger.info("The package URL for {} has changed to {}".format(
package.full_name, package.url))
messenger.info("Replacing the package with the new repository...")
remove_package(pearl_env, package, args)
install_package(pearl_env, package, args)
hook = 'pre_update'
try:
_run(
hook,
pearl_env,
package,
input=_DEFAULT_INPUT if args.no_confirm else None,
enable_xtrace=(args.verbose >= 2),
enable_errexit=(not args.force),
)
except Exception as exc:
msg = "Error while performing {} hook function".format(hook)
if not args.force:
raise HookFunctionError(msg) from exc
message = "{}: {}".format(msg, exc.args)
if args.verbose:
messenger.exception(message)
else:
messenger.error(message)
if package.is_local():
check_and_copy(Path(package.url), package.dir)
else:
quiet = "false" if args.verbose else "true"
script = dedent("""
update_git_repo {pkgdir} "" {quiet}
""").format(pkgdir=package.dir, quiet=quiet)
run_pearl_bash(script,
pearl_env,
input=_DEFAULT_INPUT if args.no_confirm else None)
hook = 'post_update'
try:
_run(
hook,
pearl_env,
package,
input=_DEFAULT_INPUT if args.no_confirm else None,
enable_xtrace=(args.verbose >= 2),
enable_errexit=(not args.force),
)
except Exception as exc:
msg = "Error while performing {} hook function".format(hook)
if not args.force:
raise HookFunctionError(msg) from exc
message = "{}: {}".format(msg, exc.args)
if args.verbose:
messenger.exception(message)
else:
messenger.error(message)
