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# Copyright 1999-2012 Gentoo Foundation |
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# Distributed under the terms of the GNU General Public License v2 |
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# $Header: /var/cvsroot/gentoo-x86/eclass/cdrom.eclass,v 1.2 2012/01/13 22:35:16 ulm Exp $ |
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|
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# @ECLASS: cdrom.eclass |
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# @MAINTAINER: |
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# games@gentoo.org |
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# @BLURB: Functions for CD-ROM handling |
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# @DESCRIPTION: |
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# Acquire cd(s) for those lovely cd-based emerges. Yes, this violates |
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# the whole 'non-interactive' policy, but damnit I want CD support! |
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# |
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# With these cdrom functions we handle all the user interaction and |
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# standardize everything. All you have to do is call cdrom_get_cds() |
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# and when the function returns, you can assume that the cd has been |
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# found at CDROM_ROOT. |
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|
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if [[ -z ${___ECLASS_ONCE_CDROM} ]]; then |
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___ECLASS_ONCE_CDROM=1 |
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|
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inherit portability |
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|
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# @ECLASS-VARIABLE: CDROM_DISABLE_PROPERTIES |
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# @DEFAULT_UNSET |
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# @DESCRIPTION: |
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# By default, the eclass sets PROPERTIES="interactive". |
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# A non-empty value of CDROM_DISABLE_PROPERTIES suppresses this. |
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|
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if [[ -z ${CDROM_DISABLE_PROPERTIES} ]]; then |
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PROPERTIES="interactive" |
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fi |
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|
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# @FUNCTION: cdrom_get_cds |
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# @USAGE: <file on cd1> [file on cd2] [file on cd3] [...] |
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# @DESCRIPTION: |
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# The function will attempt to locate a cd based upon a file that is on |
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# the cd. The more files you give this function, the more cds the cdrom |
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# functions will handle. |
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# |
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# Normally the cdrom functions will refer to the cds as 'cd #1', 'cd #2', |
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# etc... If you want to give the cds better names, then just export |
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# the appropriate CDROM_NAME variable before calling cdrom_get_cds(). |
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# Use CDROM_NAME for one cd, or CDROM_NAME_# for multiple cds. You can |
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# also use the CDROM_NAME_SET bash array. |
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# |
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# For those multi cd ebuilds, see the cdrom_load_next_cd() function. |
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cdrom_get_cds() { |
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# first we figure out how many cds we're dealing with by |
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# the # of files they gave us |
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local cdcnt=0 |
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local f= |
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for f in "$@" ; do |
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((++cdcnt)) |
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export CDROM_CHECK_${cdcnt}="$f" |
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done |
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export CDROM_TOTAL_CDS=${cdcnt} |
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export CDROM_CURRENT_CD=1 |
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|
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# now we see if the user gave use CD_ROOT ... |
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# if they did, let's just believe them that it's correct |
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if [[ -n ${CD_ROOT}${CD_ROOT_1} ]] ; then |
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local var= |
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cdcnt=0 |
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while [[ ${cdcnt} -lt ${CDROM_TOTAL_CDS} ]] ; do |
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((++cdcnt)) |
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var="CD_ROOT_${cdcnt}" |
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[[ -z ${!var} ]] && var="CD_ROOT" |
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if [[ -z ${!var} ]] ; then |
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eerror "You must either use just the CD_ROOT" |
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eerror "or specify ALL the CD_ROOT_X variables." |
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eerror "In this case, you will need" \ |
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"${CDROM_TOTAL_CDS} CD_ROOT_X variables." |
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die "could not locate CD_ROOT_${cdcnt}" |
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fi |
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done |
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export CDROM_ROOT=${CD_ROOT_1:-${CD_ROOT}} |
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einfo "Found CD #${CDROM_CURRENT_CD} root at ${CDROM_ROOT}" |
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export CDROM_SET=-1 |
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for f in ${CDROM_CHECK_1//:/ } ; do |
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((++CDROM_SET)) |
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[[ -e ${CDROM_ROOT}/${f} ]] && break |
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done |
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export CDROM_MATCH=${f} |
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return |
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fi |
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|
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# User didn't help us out so lets make sure they know they can |
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# simplify the whole process ... |
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if [[ ${CDROM_TOTAL_CDS} -eq 1 ]] ; then |
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einfo "This ebuild will need the ${CDROM_NAME:-cdrom for ${PN}}" |
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echo |
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einfo "If you do not have the CD, but have the data files" |
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einfo "mounted somewhere on your filesystem, just export" |
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einfo "the variable CD_ROOT so that it points to the" |
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einfo "directory containing the files." |
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echo |
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einfo "For example:" |
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einfo "export CD_ROOT=/mnt/cdrom" |
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echo |
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else |
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if [[ -n ${CDROM_NAME_SET} ]] ; then |
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# Translate the CDROM_NAME_SET array into CDROM_NAME_# |
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cdcnt=0 |
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while [[ ${cdcnt} -lt ${CDROM_TOTAL_CDS} ]] ; do |
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((++cdcnt)) |
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export CDROM_NAME_${cdcnt}="${CDROM_NAME_SET[$((${cdcnt}-1))]}" |
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done |
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fi |
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|
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einfo "This package will need access to ${CDROM_TOTAL_CDS} cds." |
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cdcnt=0 |
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while [[ ${cdcnt} -lt ${CDROM_TOTAL_CDS} ]] ; do |
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((++cdcnt)) |
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var="CDROM_NAME_${cdcnt}" |
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[[ ! -z ${!var} ]] && einfo " CD ${cdcnt}: ${!var}" |
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done |
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echo |
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einfo "If you do not have the CDs, but have the data files" |
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einfo "mounted somewhere on your filesystem, just export" |
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einfo "the following variables so they point to the right place:" |
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einfon "" |
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cdcnt=0 |
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while [[ ${cdcnt} -lt ${CDROM_TOTAL_CDS} ]] ; do |
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((++cdcnt)) |
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echo -n " CD_ROOT_${cdcnt}" |
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done |
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echo |
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einfo "Or, if you have all the files in the same place, or" |
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einfo "you only have one cdrom, you can export CD_ROOT" |
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einfo "and that place will be used as the same data source" |
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einfo "for all the CDs." |
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echo |
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einfo "For example:" |
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einfo "export CD_ROOT_1=/mnt/cdrom" |
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echo |
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fi |
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|
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export CDROM_SET="" |
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export CDROM_CURRENT_CD=0 |
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cdrom_load_next_cd |
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} |
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|
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# @FUNCTION: cdrom_load_next_cd |
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# @DESCRIPTION: |
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# Some packages are so big they come on multiple CDs. When you're done |
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# reading files off a CD and want access to the next one, just call this |
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# function. Again, all the messy details of user interaction are taken |
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# care of for you. Once this returns, just read the variable CDROM_ROOT |
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# for the location of the mounted CD. Note that you can only go forward |
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# in the CD list, so make sure you only call this function when you're |
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# done using the current CD. |
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cdrom_load_next_cd() { |
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local var |
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((++CDROM_CURRENT_CD)) |
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|
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unset CDROM_ROOT |
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var=CD_ROOT_${CDROM_CURRENT_CD} |
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[[ -z ${!var} ]] && var="CD_ROOT" |
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if [[ -z ${!var} ]] ; then |
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var="CDROM_CHECK_${CDROM_CURRENT_CD}" |
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_cdrom_locate_file_on_cd ${!var} |
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else |
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export CDROM_ROOT=${!var} |
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fi |
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einfo "Found CD #${CDROM_CURRENT_CD} root at ${CDROM_ROOT}" |
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} |
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|
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# this is used internally by the cdrom_get_cds() and cdrom_load_next_cd() |
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# functions. this should *never* be called from an ebuild. |
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# all it does is try to locate a give file on a cd ... if the cd isn't |
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# found, then a message asking for the user to insert the cdrom will be |
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# displayed and we'll hang out here until: |
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# (1) the file is found on a mounted cdrom |
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# (2) the user hits CTRL+C |
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_cdrom_locate_file_on_cd() { |
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local mline="" |
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local showedmsg=0 showjolietmsg=0 |
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|
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while [[ -z ${CDROM_ROOT} ]] ; do |
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local i=0 |
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local -a cdset=(${*//:/ }) |
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if [[ -n ${CDROM_SET} ]] ; then |
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cdset=(${cdset[${CDROM_SET}]}) |
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fi |
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|
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while [[ -n ${cdset[${i}]} ]] ; do |
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local dir=$(dirname ${cdset[${i}]}) |
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local file=$(basename ${cdset[${i}]}) |
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|
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local point= node= fs= foo= |
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while read point node fs foo ; do |
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[[ " cd9660 iso9660 udf " != *" ${fs} "* ]] && \ |
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! [[ ${fs} == "subfs" && ",${opts}," == *",fs=cdfss,"* ]] \ |
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&& continue |
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point=${point//\040/ } |
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[[ ! -d ${point}/${dir} ]] && continue |
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[[ -z $(find "${point}/${dir}" -maxdepth 1 -iname "${file}") ]] \ |
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&& continue |
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export CDROM_ROOT=${point} |
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export CDROM_SET=${i} |
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export CDROM_MATCH=${cdset[${i}]} |
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return |
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done <<< "$(get_mounts)" |
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|
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((++i)) |
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done |
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|
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echo |
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if [[ ${showedmsg} -eq 0 ]] ; then |
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if [[ ${CDROM_TOTAL_CDS} -eq 1 ]] ; then |
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if [[ -z ${CDROM_NAME} ]] ; then |
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einfo "Please insert+mount the cdrom for ${PN} now !" |
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else |
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einfo "Please insert+mount the ${CDROM_NAME} cdrom now !" |
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fi |
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else |
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if [[ -z ${CDROM_NAME_1} ]] ; then |
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einfo "Please insert+mount cd #${CDROM_CURRENT_CD}" \ |
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"for ${PN} now !" |
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else |
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local var="CDROM_NAME_${CDROM_CURRENT_CD}" |
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einfo "Please insert+mount the ${!var} cdrom now !" |
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fi |
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fi |
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showedmsg=1 |
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fi |
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einfo "Press return to scan for the cd again" |
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einfo "or hit CTRL+C to abort the emerge." |
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echo |
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if [[ ${showjolietmsg} -eq 0 ]] ; then |
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showjolietmsg=1 |
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else |
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ewarn "If you are having trouble with the detection" |
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ewarn "of your CD, it is possible that you do not have" |
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ewarn "Joliet support enabled in your kernel. Please" |
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ewarn "check that CONFIG_JOLIET is enabled in your kernel." |
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fi |
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read || die "something is screwed with your system" |
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done |
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} |
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|
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fi |
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