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|
#!/usr/bin/env bash
# vim: set sw=4 sts=4 et :
# Copyright (c) 2007, 2008, 2009, 2010 Ciaran McCreesh
# Copyright (c) 2009 Bo Ørsted Andresen
#
# This file is part of the Paludis package manager. Paludis is free software;
# you can redistribute it and/or modify it under the terms of the GNU General
# Public License, version 2, as published by the Free Software Foundation.
#
# Paludis is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
# Place, Suite 330, Boston, MA 02111-1307 USA
export_exlib_phases()
{
[[ -z "${CURRENT_EXLIB}" ]] && die "export_exlib_phases called but CURRENT_EXLIB undefined"
local e
for e in "$@" ; do
if [[ "${e}" == builtin_* ]] || ! has "${e}" ${PALUDIS_EBUILD_FUNCTIONS}; then
die "$e should not be in export_exlib_phases for ${CURRENT_EXLIB}"
fi
eval "${e}() { type -t ${CURRENT_EXLIB}_${e} >/dev/null || \
die \"exported phase function ${CURRENT_EXLIB}_${e} does not exist\" ; ${CURRENT_EXLIB}_${e} \"\$@\" ; }"
PALUDIS_CHECK_EXPORTED_PHASES+=" ${CURRENT_EXLIB}_${e}"
done
}
exparam()
{
die "exparam is banned outside exlibs"
}
exparam_var_name()
{
local var=EXPARAMVAR_${1//-/__dash__}
var=${var//./__dot__}
var=${var//+/__plus__}
echo ${var}
}
exparam_print()
{
case "${1}" in
-a) eval "${2}=( \"\${${3}}\" )" ;;
-v) eval "${2}=\"\${${3}}\"" ;;
*) eval "echo \"\${${1}}\"" ;;
esac
}
exparam_internal()
{
local i e=${1} a to_var v a_v=$(exparam_var_name ${1})__ALLDECLS__ b_v=$(exparam_var_name ${1})__BOOLEANS__
shift
if [[ ${1} == -b ]]; then
[[ ${#} -eq 2 ]] || die "exparam ${1} requires exactly two arguments"
shift
has "${1}" ${!b_v} || die "${e}.exlib has no ${1} boolean"
v=$(exparam_var_name ${e})_${1}
if ${!v}; then
return 0
else
return 1
fi
fi
if [[ ${1} == -v ]]; then
[[ ${#} -eq 3 ]] || die "exparam ${1} requires exactly three arguments"
a=${1}
to_var=${2}
shift 2
else
[[ ${#} -eq 1 ]] || die "exparam requires exactly one argument"
fi
v=$(exparam_var_name ${e})_${1%\[*}
if [[ ${1} == *\[*\] ]]; then
has "${1%\[*}[]" ${!a_v} || die "${e}.exlib has no ${1%\[*} array"
i=${1#*\[}
i=${i%\]}
case "${i}" in
"#") exparam_print ${to_var:+-v "${to_var}"} "#${v}[*]" ;;
"*"|"@") exparam_print ${to_var:+-a "${to_var}"} "${v}[${i}]" ;;
+([[:digit:]])) exparam_print ${to_var:+-v "${to_var}"} "${v}[${i}]" ;;
*) die "Invalid index in exparam ${1}" ;;
esac
else
has "${1}" ${!a_v%\[\]} || die "${e}.exlib has no ${1} parameter"
exparam_print ${to_var:+-v "${to_var}"} "${v}"
fi
}
myexparam()
{
[[ -z "${CURRENT_EXLIB}" ]] && die "myexparam called but CURRENT_EXLIB undefined"
local bool=false
if [[ ${1} == -b ]]; then
bool=true
shift
fi
local v=${1%%=*} a_v="$(exparam_var_name ${CURRENT_EXLIB})__ALLDECLS__"
[[ ${1} == *=\[ && ${#} -gt 1 ]] && v+="[]"
printf -v "${a_v}" "%s %s" "${!a_v}" "${v}"
if ${bool}; then
local b_v="$(exparam_var_name ${CURRENT_EXLIB})__BOOLEANS__"
printf -v "${b_v}" "%s %s" "${!b_v}" "${v}"
fi
v=$(exparam_var_name ${CURRENT_EXLIB})_${v%\[\]}
if [[ -z ${!v+set} && ${1} == *=* ]]; then
if [[ ${1} == *=\[ && ${#} -gt 1 ]]; then
shift
local i a=()
while [[ ${#} -gt 1 ]]; do
a+=( "${1}" )
shift
done
[[ ${1} == \] ]] || die "Array encountered with no closing ]"
eval "${v}=( \"\${a[@]}\" )"
else
printf -v "${v}" "%s" "${1#*=}"
fi
fi
if ${bool} && ! has "${!v}" true false; then
die "exparam ${1%%=*} for ${CURRENT_EXLIB}.exlib must be 'true' or 'false'"
fi
}
require()
{
ebuild_notice "debug" "Command 'require ${@}', using EXLIBSDIRS '${EXLIBSDIRS}'"
local exlibs e ee p a=() location v a_v v_qa
# parse exlib parameters
while [[ -n $@ ]]; do
if [[ ${1} == +('[') ]]; then
[[ -z ${e} ]] && die "\"${1}\" encountered with no preceding exlib"
p=${1}
shift
while [[ -n ${1} && ${1} != ${p//\[/\]} ]]; do
v="${1%%=*}"
if [[ ${1#*=} == ${p} ]]; then
v+="[]"
a=()
shift
while [[ -n ${1} && ${1} != ${p//\[/\]} ]]; do
a+=( "${1}" )
shift
done
[[ ${1} == ${p//\[/\]} ]] || die "\"${p}\" encountered with no closing \"${p//[/]}\" for array ${v}"
eval "$(exparam_var_name ${e})_${v%\[\]}=( \"\${a[@]}\" )"
else
printf -v "$(exparam_var_name ${e})_${1%%=*}" "%s" "${1#*=}"
fi
a_v="$(exparam_var_name ${e})__ALL__"
printf -v "${a_v}" "%s %s" "${!a_v}" "${v}"
shift
done
[[ ${1} == ${p//\[/\]} ]] || die "\"${p}\" encountered with no closing \"${p//[/]}\""
else
e=${1}
exlibs+=" ${e}"
fi
shift
done
# source exlibs
for e in ${exlibs}; do
location=
for ee in ${EXLIBSDIRS} ; do
[[ -f "${ee}/${e}.exlib" ]] && location="${ee}/${e}.exlib"
done
local old_CURRENT_EXLIB="${CURRENT_EXLIB}"
export CURRENT_EXLIB="${e}"
local old_PALUDIS_CHECK_EXPORTED_PHASES="${PALUDIS_CHECK_EXPORTED_PHASES}"
export PALUDIS_CHECK_EXPORTED_PHASES=
alias exparam="exparam_internal ${CURRENT_EXLIB}"
for v in ${PALUDIS_SOURCE_MERGED_VARIABLES} ${PALUDIS_BRACKET_MERGED_VARIABLES} ; do
local c_v="current_${v}" u_v="unset_${v}"
local ${c_v}="${!v}"
local ${u_v}="${!v-unset}"
unset ${v}
done
for v_qa in ${PALUDIS_ECLASS_MUST_NOT_SET_VARIABLES} ; do
local v=${v_qa#qa:}
local c_v="current_${v}" u_v="unset_${v}"
export -n ${c_v}="${!v}"
export -n ${u_v}="${!v-unset}"
done
[[ -z "${location}" ]] && die "Error finding exlib ${e} in ${EXLIBSDIRS}"
source "${location}" || die "Error sourcing exlib ${e}"
hasq "${CURRENT_EXLIB}" ${INHERITED} || export INHERITED="${INHERITED} ${CURRENT_EXLIB}"
local f e_f
for f in ${PALUDIS_EBUILD_FUNCTIONS} ; do
[[ ${f} == builtin_* ]] && continue
[[ $(type -t ${CURRENT_EXLIB}_${f}) == function ]] || continue
e_f=$(declare -f ${CURRENT_EXLIB}_${f})
eval "${e_f/{/{ verify_not_called_cross_phase ${f}}"
done
for v in ${PALUDIS_SOURCE_MERGED_VARIABLES} ; do
local e_v="E_${v}"
export -n ${e_v}="${!e_v} ${!v}"
done
for v in ${PALUDIS_BRACKET_MERGED_VARIABLES} ; do
local e_v="E_${v}"
if [[ -z "${!v}" ]] ; then
export -n ${e_v}="${!e_v}"
elif has "${v}" ${PALUDIS_BRACKET_MERGED_VARIABLES_ANNOTATABLE} ; then
export -n ${e_v}="${!e_v} ( ${!v} ) [[ ${PALUDIS_BRACKET_MERGED_VARIABLES_ANNOTATION} =
[ ${CURRENT_EXLIB}.exlib ] ]]"
else
export -n ${e_v}="${!e_v} ( ${!v} )"
fi
done
for v in ${PALUDIS_SOURCE_MERGED_VARIABLES} ${PALUDIS_BRACKET_MERGED_VARIABLES} ; do
local c_v="current_${v}" u_v="unset_${v}"
[[ "unset" == ${!u_v} ]] && unset ${v} || export ${v}="${!c_v}"
done
for v_qa in ${PALUDIS_ECLASS_MUST_NOT_SET_VARIABLES} ; do
local v=${v_qa#qa:}
local c_v="current_${v}" u_v="unset_${v}"
if [[ ${!c_v} != ${!v} || ${!u_v} != ${!v-unset} ]]; then
if [[ ${v} == ${v_qa} ]] ; then
die "Variable '${v}' illegally set by ${location}"
else
ebuild_notice "qa" "Variable '${v}' should not be set by ${location}"
export -n ${c_v}="${!v}"
export -n ${u_v}="${!v-unset}"
fi
fi
done
# die on required exlib parameters that haven't been supplied
local c_v v
a_v=$(exparam_var_name ${CURRENT_EXLIB})__ALLDECLS__
for v in ${!a_v}; do
c_v=$(exparam_var_name ${CURRENT_EXLIB})_${v%\[\]}
if [[ $(eval "declare -p ${c_v}") == declare\ -a\ ${c_v}=* ]]; then
[[ ${v} == *\[\] ]] || die "${CURRENT_EXLIB}.exlib requires a scalar ${v} parameter but got an array"
elif [[ -n ${!c_v+set} ]]; then
[[ ${v} != *\[\] ]] || die "${CURRENT_EXLIB}.exlib requires an array ${v} but got a scalar"
else
die "${CURRENT_EXLIB}.exlib requires a ${v} parameter"
fi
done
# die on supplied exlib parameters which haven't been declared
v=$(exparam_var_name ${CURRENT_EXLIB})__ALL__
for v in ${!v}; do
has ${v} ${!a_v} || die "${CURRENT_EXLIB}.exlib takes no ${v} parameter"
done
# die on exported exlib phases which don't get defined
for v in ${PALUDIS_CHECK_EXPORTED_PHASES} ; do
type -t ${v} >/dev/null || die "exported phase function ${v} does not exist"
done
export PALUDIS_CHECK_EXPORTED_PHASES="${old_PALUDIS_CHECK_EXPORTED_PHASES}"
export CURRENT_EXLIB="${old_CURRENT_EXLIB}"
if [[ -n ${CURRENT_EXLIB} ]]; then
alias exparam="exparam_internal ${CURRENT_EXLIB}"
else
unalias exparam
fi
done
}
default()
{
[[ $(type -t "default_$(paludis_phase_to_function_name "${!PALUDIS_EBUILD_PHASE_VAR}")" ) == "function" ]] || \
die "default_$(paludis_phase_to_function_name "${!PALUDIS_EBUILD_PHASE_VAR}") is not a function"
default_$(paludis_phase_to_function_name "${!PALUDIS_EBUILD_PHASE_VAR}") "$@"
}
illegal_in_global_scope()
{
[[ "${!PALUDIS_EBUILD_PHASE_VAR}" == "metadata" ]] \
&& die "Exheres bug: ${FUNCNAME[1]} must not be called in global scope"
}
verify_not_called_cross_phase() {
if [[ ${1:-${FUNCNAME[1]}} != $(paludis_phase_to_function_name "${!PALUDIS_EBUILD_PHASE_VAR}") ]] ; then
local correct_phase=${1:-${FUNCNAME[1]}#src_}; correct_phase=${correct_phase#pkg_}; correct_phase=${correct_phase#builtin_}
die "Exheres bug: ${FUNCNAME[1]} must only be called in the ${corect_phase} phase, was called in ${!PALUDIS_EBUILD_PHASE_VAR}"
fi
}
|
