[ntk/apt.git] / apt-pkg / aptconfiguration.cc

// -*- mode: cpp; mode: fold -*-
// Description								/*{{{*/
/* ######################################################################

   Provide access methods to various configuration settings,
   setup defaults and returns validate settings.

   ##################################################################### */
									/*}}}*/
// Include Files							/*{{{*/
#include <apt-pkg/aptconfiguration.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/error.h>
#include <apt-pkg/fileutl.h>
#include <apt-pkg/macros.h>
#include <apt-pkg/strutl.h>

#include <sys/types.h>
#include <dirent.h>

#include <algorithm>
#include <string>
#include <vector>
									/*}}}*/
namespace APT {
// getCompressionTypes - Return Vector of usbale compressiontypes	/*{{{*/
// ---------------------------------------------------------------------
/* return a vector of compression types in the prefered order. */
std::vector<std::string>
const Configuration::getCompressionTypes(bool const &Cached) {
	static std::vector<std::string> types;
	if (types.empty() == false) {
		if (Cached == true)
			return types;
		else
			types.clear();
	}

	// setup the defaults for the compressiontypes => method mapping
	_config->CndSet("Acquire::CompressionTypes::bz2","bzip2");
	_config->CndSet("Acquire::CompressionTypes::lzma","lzma");
	_config->CndSet("Acquire::CompressionTypes::gz","gzip");

	// Set default application paths to check for optional compression types
	_config->CndSet("Dir::Bin::lzma", "/usr/bin/lzma");
	_config->CndSet("Dir::Bin::bzip2", "/bin/bzip2");

	// accept non-list order as override setting for config settings on commandline
	std::string const overrideOrder = _config->Find("Acquire::CompressionTypes::Order","");
	if (overrideOrder.empty() == false)
		types.push_back(overrideOrder);

	// load the order setting into our vector
	std::vector<std::string> const order = _config->FindVector("Acquire::CompressionTypes::Order");
	for (std::vector<std::string>::const_iterator o = order.begin();
	     o != order.end(); o++) {
		if ((*o).empty() == true)
			continue;
		// ignore types we have no method ready to use
		if (_config->Exists(string("Acquire::CompressionTypes::").append(*o)) == false)
			continue;
		// ignore types we have no app ready to use
		string const appsetting = string("Dir::Bin::").append(*o);
		if (_config->Exists(appsetting) == true) {
			std::string const app = _config->FindFile(appsetting.c_str(), "");
			if (app.empty() == false && FileExists(app) == false)
				continue;
		}
		types.push_back(*o);
	}

	// move again over the option tree to add all missing compression types
	::Configuration::Item const *Types = _config->Tree("Acquire::CompressionTypes");
	if (Types != 0)
		Types = Types->Child;

	for (; Types != 0; Types = Types->Next) {
		if (Types->Tag == "Order" || Types->Tag.empty() == true)
			continue;
		// ignore types we already have in the vector
		if (std::find(types.begin(),types.end(),Types->Tag) != types.end())
			continue;
		// ignore types we have no app ready to use
		string const appsetting = string("Dir::Bin::").append(Types->Value);
		if (appsetting.empty() == false && _config->Exists(appsetting) == true) {
			std::string const app = _config->FindFile(appsetting.c_str(), "");
			if (app.empty() == false && FileExists(app) == false)
				continue;
		}
		types.push_back(Types->Tag);
	}

	// add the special "uncompressed" type
	if (std::find(types.begin(), types.end(), "uncompressed") == types.end())
	{
		string const uncompr = _config->FindFile("Dir::Bin::uncompressed", "");
		if (uncompr.empty() == true || FileExists(uncompr) == true)
			types.push_back("uncompressed");
	}

	return types;
}
									/*}}}*/
// GetLanguages - Return Vector of Language Codes			/*{{{*/
// ---------------------------------------------------------------------
/* return a vector of language codes in the prefered order.
   the special word "environment" will be replaced with the long and the short
   code of the local settings and it will be insured that this will not add
   duplicates. So in an german local the setting "environment, de_DE, en, de"
   will result in "de_DE, de, en".
   The special word "none" is the stopcode for the not-All code vector */
std::vector<std::string> const Configuration::getLanguages(bool const &All,
				bool const &Cached, char const ** const Locale) {
	using std::string;

	// The detection is boring and has a lot of cornercases,
	// so we cache the results to calculated it only once.
	std::vector<string> static allCodes;
	std::vector<string> static codes;

	// we have something in the cache
	if (codes.empty() == false || allCodes.empty() == false) {
		if (Cached == true) {
			if(All == true && allCodes.empty() == false)
				return allCodes;
			else
				return codes;
		} else {
			allCodes.clear();
			codes.clear();
		}
	}

	// Include all Language codes we have a Translation file for in /var/lib/apt/lists
	// so they will be all included in the Cache.
	std::vector<string> builtin;
	DIR *D = opendir(_config->FindDir("Dir::State::lists").c_str());
	if (D != 0) {
		builtin.push_back("none");
		for (struct dirent *Ent = readdir(D); Ent != 0; Ent = readdir(D)) {
			string const name = Ent->d_name;
			size_t const foundDash = name.rfind("-");
			size_t const foundUnderscore = name.rfind("_");
			if (foundDash == string::npos || foundUnderscore == string::npos ||
			    foundDash <= foundUnderscore ||
			    name.substr(foundUnderscore+1, foundDash-(foundUnderscore+1)) != "Translation")
				continue;
			string const c = name.substr(foundDash+1);
			if (unlikely(c.empty() == true) || c == "en")
				continue;
			// Skip unusual files, like backups or that alike
			string::const_iterator s = c.begin();
			for (;s != c.end(); ++s) {
				if (isalpha(*s) == 0)
					break;
			}
			if (s != c.end())
				continue;
			if (std::find(builtin.begin(), builtin.end(), c) != builtin.end())
				continue;
			builtin.push_back(c);
		}
	}
	closedir(D);

	// get the environment language codes: LC_MESSAGES (and later LANGUAGE)
	// we extract both, a long and a short code and then we will
	// check if we actually need both (rare) or if the short is enough
	string const envMsg = string(Locale == 0 ? std::setlocale(LC_MESSAGES, NULL) : *Locale);
	size_t const lenShort = (envMsg.find('_') != string::npos) ? envMsg.find('_') : 2;
	size_t const lenLong = (envMsg.find_first_of(".@") != string::npos) ? envMsg.find_first_of(".@") : (lenShort + 3);

	string envLong = envMsg.substr(0,lenLong);
	string const envShort = envLong.substr(0,lenShort);
	bool envLongIncluded = true;

	// to save the servers from unneeded queries, we only try also long codes
	// for languages it is realistic to have a long code translation file…
	// TODO: Improve translation acquire system to drop them dynamic
	char const *needLong[] = { "cs", "en", "pt", "sv", "zh", NULL };
	if (envLong != envShort) {
		for (char const **l = needLong; *l != NULL; l++)
			if (envShort.compare(*l) == 0) {
				envLongIncluded = false;
				break;
			}
	}

	// we don't add the long code, but we allow the user to do so
	if (envLongIncluded == true)
		envLong.clear();

	// FIXME: Remove support for the old APT::Acquire::Translation
	// it was undocumented and so it should be not very widthly used
	string const oldAcquire = _config->Find("APT::Acquire::Translation","");
	if (oldAcquire.empty() == false && oldAcquire != "environment") {
		// TRANSLATORS: the two %s are APT configuration options
		_error->Notice("Option '%s' is deprecated. Please use '%s' instead, see 'man 5 apt.conf' for details.",
				"APT::Acquire::Translation", "Acquire::Languages");
		if (oldAcquire != "none")
			codes.push_back(oldAcquire);
		codes.push_back("en");
		allCodes = codes;
		for (std::vector<string>::const_iterator b = builtin.begin();
		     b != builtin.end(); ++b)
			if (std::find(allCodes.begin(), allCodes.end(), *b) == allCodes.end())
				allCodes.push_back(*b);
		if (All == true)
			return allCodes;
		else
			return codes;
	}

	// It is very likely we will need to environment codes later,
	// so let us generate them now from LC_MESSAGES and LANGUAGE
	std::vector<string> environment;
	if (envShort != "C") {
		// take care of LC_MESSAGES
		if (envLongIncluded == false)
			environment.push_back(envLong);
		environment.push_back(envShort);
		// take care of LANGUAGE
		const char *language_env = getenv("LANGUAGE") == 0 ? "" : getenv("LANGUAGE");
		string envLang = Locale == 0 ? language_env : *(Locale+1);
		if (envLang.empty() == false) {
			std::vector<string> env = VectorizeString(envLang,':');
			short addedLangs = 0; // add a maximum of 3 fallbacks from the environment
			for (std::vector<string>::const_iterator e = env.begin();
			     e != env.end() && addedLangs < 3; ++e) {
				if (unlikely(e->empty() == true) || *e == "en")
					continue;
				if (*e == envLong || *e == envShort)
					continue;
				if (std::find(environment.begin(), environment.end(), *e) != environment.end())
					continue;
				if (e->find('_') != string::npos) {
					// Drop LongCodes here - ShortCodes are also included
					string const shorty = e->substr(0, e->find('_'));
					char const **n = needLong;
					for (; *n != NULL; ++n)
						if (shorty == *n)
							break;
					if (*n == NULL)
						continue;
				}
				++addedLangs;
				environment.push_back(*e);
			}
		}
	} else {
		environment.push_back("en");
	}

	// Support settings like Acquire::Translation=none on the command line to
	// override the configuration settings vector of languages.
	string const forceLang = _config->Find("Acquire::Languages","");
	if (forceLang.empty() == false) {
		if (forceLang == "environment") {
			codes = environment;
		} else if (forceLang != "none")
			codes.push_back(forceLang);
		allCodes = codes;
		for (std::vector<string>::const_iterator b = builtin.begin();
		     b != builtin.end(); ++b)
			if (std::find(allCodes.begin(), allCodes.end(), *b) == allCodes.end())
				allCodes.push_back(*b);
		if (All == true)
			return allCodes;
		else
			return codes;
	}

	// cornercase: LANG=C, so we use only "en" Translation
	if (envShort == "C") {
		allCodes = codes = environment;
		allCodes.insert(allCodes.end(), builtin.begin(), builtin.end());
		if (All == true)
			return allCodes;
		else
			return codes;
	}

	std::vector<string> const lang = _config->FindVector("Acquire::Languages");
	// the default setting -> "environment, en"
	if (lang.empty() == true) {
		codes = environment;
		if (envShort != "en")
			codes.push_back("en");
		allCodes = codes;
		for (std::vector<string>::const_iterator b = builtin.begin();
		     b != builtin.end(); ++b)
			if (std::find(allCodes.begin(), allCodes.end(), *b) == allCodes.end())
				allCodes.push_back(*b);
		if (All == true)
			return allCodes;
		else
			return codes;
	}

	// the configs define the order, so add the environment
	// then needed and ensure the codes are not listed twice.
	bool noneSeen = false;
	for (std::vector<string>::const_iterator l = lang.begin();
	     l != lang.end(); l++) {
		if (*l == "environment") {
			for (std::vector<string>::const_iterator e = environment.begin();
			     e != environment.end(); ++e) {
				if (std::find(allCodes.begin(), allCodes.end(), *e) != allCodes.end())
					continue;
				if (noneSeen == false)
					codes.push_back(*e);
				allCodes.push_back(*e);
			}
			continue;
		} else if (*l == "none") {
			noneSeen = true;
			continue;
		} else if (std::find(allCodes.begin(), allCodes.end(), *l) != allCodes.end())
			continue;

		if (noneSeen == false)
			codes.push_back(*l);
		allCodes.push_back(*l);
	}

	for (std::vector<string>::const_iterator b = builtin.begin();
	     b != builtin.end(); ++b)
		if (std::find(allCodes.begin(), allCodes.end(), *b) == allCodes.end())
			allCodes.push_back(*b);

	if (All == true)
		return allCodes;
	else
		return codes;
}
									/*}}}*/
// getArchitectures - Return Vector of prefered Architectures		/*{{{*/
std::vector<std::string> const Configuration::getArchitectures(bool const &Cached) {
	using std::string;

	std::vector<string> static archs;
	if (likely(Cached == true) && archs.empty() == false)
		return archs;

	archs = _config->FindVector("APT::Architectures");
	string const arch = _config->Find("APT::Architecture");
	if (unlikely(arch.empty() == true))
		return archs;

	if (archs.empty() == true ||
	    std::find(archs.begin(), archs.end(), arch) == archs.end())
		archs.push_back(arch);

	// erase duplicates and empty strings
	for (std::vector<string>::reverse_iterator a = archs.rbegin();
	     a != archs.rend(); ++a) {
		if (a->empty() == true || std::find(a + 1, archs.rend(), *a) != archs.rend())
			archs.erase(a.base()-1);
		if (a == archs.rend())
			break;
	}

	return archs;
}
									/*}}}*/
// checkArchitecture - are we interested in the given Architecture?	/*{{{*/
bool const Configuration::checkArchitecture(std::string const &Arch) {
	if (Arch == "all")
		return true;
	std::vector<std::string> const archs = getArchitectures(true);
	return (std::find(archs.begin(), archs.end(), Arch) != archs.end());
}
									/*}}}*/
}
Commit	Line	Data
e878aedb DK	1	// -- mode: cpp; mode: fold --
	2	// Description /{{{/
	3	/* ######################################################################
	4
	5	Provide access methods to various configuration settings,
	6	setup defaults and returns validate settings.
	7
	8	##################################################################### */
	9	/}}}/
	10	// Include Files /{{{/
e878aedb DK	11	#include <apt-pkg/aptconfiguration.h>
e878aedb DK	12	#include <apt-pkg/configuration.h>
9f9717fa	13	#include <apt-pkg/error.h>
d7cf5923 DK	14	#include <apt-pkg/fileutl.h>
	15	#include <apt-pkg/macros.h>
	16	#include <apt-pkg/strutl.h>
e878aedb	17
3f2d77b5 DK	18	#include <sys/types.h>
	19	#include <dirent.h>
	20
8bd02d8b	21	#include <algorithm>
3f2d77b5 DK	22	#include <string>
3f2d77b5 DK	23	#include <vector>
e878aedb DK	24	/}}}/
	25	namespace APT {
	26	// getCompressionTypes - Return Vector of usbale compressiontypes /{{{/
	27	// ---------------------------------------------------------------------
	28	/* return a vector of compression types in the prefered order. */
	29	std::vector<std::string>
	30	const Configuration::getCompressionTypes(bool const &Cached) {
	31	static std::vector<std::string> types;
	32	if (types.empty() == false) {
	33	if (Cached == true)
	34	return types;
	35	else
	36	types.clear();
	37	}
	38
8bd02d8b DK	39	// setup the defaults for the compressiontypes => method mapping
	40	_config->CndSet("Acquire::CompressionTypes::bz2","bzip2");
	41	_config->CndSet("Acquire::CompressionTypes::lzma","lzma");
	42	_config->CndSet("Acquire::CompressionTypes::gz","gzip");
	43
e878aedb DK	44	// Set default application paths to check for optional compression types
	45	_config->CndSet("Dir::Bin::lzma", "/usr/bin/lzma");
	46	_config->CndSet("Dir::Bin::bzip2", "/bin/bzip2");
	47
8bd02d8b DK	48	// accept non-list order as override setting for config settings on commandline
	49	std::string const overrideOrder = _config->Find("Acquire::CompressionTypes::Order","");
	50	if (overrideOrder.empty() == false)
	51	types.push_back(overrideOrder);
e878aedb	52
8bd02d8b DK	53	// load the order setting into our vector
	54	std::vector<std::string> const order = _config->FindVector("Acquire::CompressionTypes::Order");
	55	for (std::vector<std::string>::const_iterator o = order.begin();
	56	o != order.end(); o++) {
	57	if ((*o).empty() == true)
	58	continue;
	59	// ignore types we have no method ready to use
	60	if (_config->Exists(string("Acquire::CompressionTypes::").append(*o)) == false)
	61	continue;
	62	// ignore types we have no app ready to use
	63	string const appsetting = string("Dir::Bin::").append(*o);
	64	if (_config->Exists(appsetting) == true) {
	65	std::string const app = _config->FindFile(appsetting.c_str(), "");
	66	if (app.empty() == false && FileExists(app) == false)
	67	continue;
	68	}
	69	types.push_back(*o);
e878aedb DK	70	}
e878aedb DK	71
8bd02d8b	72	// move again over the option tree to add all missing compression types
e878aedb DK	73	::Configuration::Item const *Types = _config->Tree("Acquire::CompressionTypes");
	74	if (Types != 0)
	75	Types = Types->Child;
	76
	77	for (; Types != 0; Types = Types->Next) {
8bd02d8b DK	78	if (Types->Tag == "Order" \|\| Types->Tag.empty() == true)
	79	continue;
	80	// ignore types we already have in the vector
	81	if (std::find(types.begin(),types.end(),Types->Tag) != types.end())
	82	continue;
	83	// ignore types we have no app ready to use
e878aedb	84	string const appsetting = string("Dir::Bin::").append(Types->Value);
e878aedb DK	85	if (appsetting.empty() == false && _config->Exists(appsetting) == true) {
	86	std::string const app = _config->FindFile(appsetting.c_str(), "");
	87	if (app.empty() == false && FileExists(app) == false)
	88	continue;
	89	}
	90	types.push_back(Types->Tag);
	91	}
	92
5d885723 DK	93	// add the special "uncompressed" type
	94	if (std::find(types.begin(), types.end(), "uncompressed") == types.end())
	95	{
	96	string const uncompr = _config->FindFile("Dir::Bin::uncompressed", "");
	97	if (uncompr.empty() == true \|\| FileExists(uncompr) == true)
	98	types.push_back("uncompressed");
	99	}
	100
e878aedb DK	101	return types;
	102	}
	103	/}}}/
45df0ad2 DK	104	// GetLanguages - Return Vector of Language Codes /{{{/
	105	// ---------------------------------------------------------------------
	106	/* return a vector of language codes in the prefered order.
	107	the special word "environment" will be replaced with the long and the short
	108	code of the local settings and it will be insured that this will not add
	109	duplicates. So in an german local the setting "environment, de_DE, en, de"
	110	will result in "de_DE, de, en".
	111	The special word "none" is the stopcode for the not-All code vector */
	112	std::vector<std::string> const Configuration::getLanguages(bool const &All,
d7cf5923	113	bool const &Cached, char const ** const Locale) {
45df0ad2 DK	114	using std::string;
	115
	116	// The detection is boring and has a lot of cornercases,
	117	// so we cache the results to calculated it only once.
	118	std::vector<string> static allCodes;
	119	std::vector<string> static codes;
	120
	121	// we have something in the cache
	122	if (codes.empty() == false \|\| allCodes.empty() == false) {
	123	if (Cached == true) {
	124	if(All == true && allCodes.empty() == false)
	125	return allCodes;
	126	else
	127	return codes;
	128	} else {
	129	allCodes.clear();
	130	codes.clear();
	131	}
	132	}
	133
3f2d77b5 DK	134	// Include all Language codes we have a Translation file for in /var/lib/apt/lists
	135	// so they will be all included in the Cache.
	136	std::vector<string> builtin;
	137	DIR *D = opendir(_config->FindDir("Dir::State::lists").c_str());
	138	if (D != 0) {
	139	builtin.push_back("none");
	140	for (struct dirent *Ent = readdir(D); Ent != 0; Ent = readdir(D)) {
	141	string const name = Ent->d_name;
	142	size_t const foundDash = name.rfind("-");
	143	size_t const foundUnderscore = name.rfind("_");
	144	if (foundDash == string::npos \|\| foundUnderscore == string::npos \|\|
	145	foundDash <= foundUnderscore \|\|
	146	name.substr(foundUnderscore+1, foundDash-(foundUnderscore+1)) != "Translation")
	147	continue;
	148	string const c = name.substr(foundDash+1);
	149	if (unlikely(c.empty() == true) \|\| c == "en")
	150	continue;
	151	// Skip unusual files, like backups or that alike
	152	string::const_iterator s = c.begin();
	153	for (;s != c.end(); ++s) {
	154	if (isalpha(*s) == 0)
	155	break;
	156	}
	157	if (s != c.end())
	158	continue;
	159	if (std::find(builtin.begin(), builtin.end(), c) != builtin.end())
	160	continue;
	161	builtin.push_back(c);
	162	}
	163	}
cf0e078c	164	closedir(D);
3f2d77b5	165
d7cf5923	166	// get the environment language codes: LC_MESSAGES (and later LANGUAGE)
45df0ad2 DK	167	// we extract both, a long and a short code and then we will
45df0ad2 DK	168	// check if we actually need both (rare) or if the short is enough
d7cf5923	169	string const envMsg = string(Locale == 0 ? std::setlocale(LC_MESSAGES, NULL) : *Locale);
45df0ad2	170	size_t const lenShort = (envMsg.find('_') != string::npos) ? envMsg.find('_') : 2;
d7cf5923	171	size_t const lenLong = (envMsg.find_first_of(".@") != string::npos) ? envMsg.find_first_of(".@") : (lenShort + 3);
45df0ad2 DK	172
	173	string envLong = envMsg.substr(0,lenLong);
	174	string const envShort = envLong.substr(0,lenShort);
d7cf5923	175	bool envLongIncluded = true;
45df0ad2	176
d7cf5923 DK	177	// to save the servers from unneeded queries, we only try also long codes
	178	// for languages it is realistic to have a long code translation file…
	179	// TODO: Improve translation acquire system to drop them dynamic
	180	char const *needLong[] = { "cs", "en", "pt", "sv", "zh", NULL };
45df0ad2	181	if (envLong != envShort) {
45df0ad2 DK	182	for (char const *l = needLong; l != NULL; l++)
	183	if (envShort.compare(*l) == 0) {
	184	envLongIncluded = false;
	185	break;
	186	}
	187	}
	188
	189	// we don't add the long code, but we allow the user to do so
	190	if (envLongIncluded == true)
	191	envLong.clear();
	192
	193	// FIXME: Remove support for the old APT::Acquire::Translation
	194	// it was undocumented and so it should be not very widthly used
	195	string const oldAcquire = _config->Find("APT::Acquire::Translation","");
	196	if (oldAcquire.empty() == false && oldAcquire != "environment") {
9f9717fa DK	197	// TRANSLATORS: the two %s are APT configuration options
	198	_error->Notice("Option '%s' is deprecated. Please use '%s' instead, see 'man 5 apt.conf' for details.",
	199	"APT::Acquire::Translation", "Acquire::Languages");
45df0ad2 DK	200	if (oldAcquire != "none")
45df0ad2 DK	201	codes.push_back(oldAcquire);
3f2d77b5	202	codes.push_back("en");
d7cf5923	203	allCodes = codes;
3f2d77b5 DK	204	for (std::vector<string>::const_iterator b = builtin.begin();
	205	b != builtin.end(); ++b)
	206	if (std::find(allCodes.begin(), allCodes.end(), *b) == allCodes.end())
	207	allCodes.push_back(*b);
	208	if (All == true)
	209	return allCodes;
	210	else
	211	return codes;
45df0ad2 DK	212	}
45df0ad2 DK	213
d7cf5923 DK	214	// It is very likely we will need to environment codes later,
	215	// so let us generate them now from LC_MESSAGES and LANGUAGE
	216	std::vector<string> environment;
eb3947c6 DK	217	if (envShort != "C") {
	218	// take care of LC_MESSAGES
	219	if (envLongIncluded == false)
	220	environment.push_back(envLong);
	221	environment.push_back(envShort);
	222	// take care of LANGUAGE
	223	const char *language_env = getenv("LANGUAGE") == 0 ? "" : getenv("LANGUAGE");
	224	string envLang = Locale == 0 ? language_env : *(Locale+1);
	225	if (envLang.empty() == false) {
	226	std::vector<string> env = VectorizeString(envLang,':');
	227	short addedLangs = 0; // add a maximum of 3 fallbacks from the environment
	228	for (std::vector<string>::const_iterator e = env.begin();
	229	e != env.end() && addedLangs < 3; ++e) {
	230	if (unlikely(e->empty() == true) \|\| *e == "en")
	231	continue;
	232	if (e == envLong \|\| e == envShort)
	233	continue;
	234	if (std::find(environment.begin(), environment.end(), *e) != environment.end())
d7cf5923	235	continue;
eb3947c6 DK	236	if (e->find('_') != string::npos) {
	237	// Drop LongCodes here - ShortCodes are also included
	238	string const shorty = e->substr(0, e->find('_'));
	239	char const **n = needLong;
	240	for (; *n != NULL; ++n)
	241	if (shorty == *n)
	242	break;
	243	if (*n == NULL)
	244	continue;
	245	}
	246	++addedLangs;
	247	environment.push_back(*e);
d7cf5923	248	}
d7cf5923	249	}
eb3947c6 DK	250	} else {
eb3947c6 DK	251	environment.push_back("en");
d7cf5923 DK	252	}
d7cf5923 DK	253
45df0ad2 DK	254	// Support settings like Acquire::Translation=none on the command line to
	255	// override the configuration settings vector of languages.
	256	string const forceLang = _config->Find("Acquire::Languages","");
	257	if (forceLang.empty() == false) {
	258	if (forceLang == "environment") {
d7cf5923	259	codes = environment;
45df0ad2 DK	260	} else if (forceLang != "none")
45df0ad2 DK	261	codes.push_back(forceLang);
d7cf5923	262	allCodes = codes;
3f2d77b5 DK	263	for (std::vector<string>::const_iterator b = builtin.begin();
	264	b != builtin.end(); ++b)
	265	if (std::find(allCodes.begin(), allCodes.end(), *b) == allCodes.end())
	266	allCodes.push_back(*b);
	267	if (All == true)
	268	return allCodes;
	269	else
	270	return codes;
45df0ad2 DK	271	}
45df0ad2 DK	272
eb3947c6 DK	273	// cornercase: LANG=C, so we use only "en" Translation
	274	if (envShort == "C") {
	275	allCodes = codes = environment;
	276	allCodes.insert(allCodes.end(), builtin.begin(), builtin.end());
	277	if (All == true)
	278	return allCodes;
	279	else
	280	return codes;
	281	}
	282
45df0ad2 DK	283	std::vector<string> const lang = _config->FindVector("Acquire::Languages");
	284	// the default setting -> "environment, en"
	285	if (lang.empty() == true) {
d7cf5923	286	codes = environment;
45df0ad2 DK	287	if (envShort != "en")
45df0ad2 DK	288	codes.push_back("en");
d7cf5923	289	allCodes = codes;
3f2d77b5 DK	290	for (std::vector<string>::const_iterator b = builtin.begin();
	291	b != builtin.end(); ++b)
	292	if (std::find(allCodes.begin(), allCodes.end(), *b) == allCodes.end())
	293	allCodes.push_back(*b);
	294	if (All == true)
	295	return allCodes;
	296	else
	297	return codes;
45df0ad2 DK	298	}
	299
	300	// the configs define the order, so add the environment
	301	// then needed and ensure the codes are not listed twice.
	302	bool noneSeen = false;
	303	for (std::vector<string>::const_iterator l = lang.begin();
	304	l != lang.end(); l++) {
	305	if (*l == "environment") {
d7cf5923 DK	306	for (std::vector<string>::const_iterator e = environment.begin();
	307	e != environment.end(); ++e) {
	308	if (std::find(allCodes.begin(), allCodes.end(), *e) != allCodes.end())
	309	continue;
45df0ad2	310	if (noneSeen == false)
d7cf5923 DK	311	codes.push_back(*e);
d7cf5923 DK	312	allCodes.push_back(*e);
45df0ad2 DK	313	}
	314	continue;
	315	} else if (*l == "none") {
	316	noneSeen = true;
	317	continue;
d7cf5923	318	} else if (std::find(allCodes.begin(), allCodes.end(), *l) != allCodes.end())
45df0ad2 DK	319	continue;
	320
	321	if (noneSeen == false)
	322	codes.push_back(*l);
	323	allCodes.push_back(*l);
	324	}
3f2d77b5 DK	325
	326	for (std::vector<string>::const_iterator b = builtin.begin();
	327	b != builtin.end(); ++b)
	328	if (std::find(allCodes.begin(), allCodes.end(), *b) == allCodes.end())
	329	allCodes.push_back(*b);
	330
45df0ad2 DK	331	if (All == true)
	332	return allCodes;
	333	else
	334	return codes;
	335	}
	336	/}}}/
5dd4c8b8 DK	337	// getArchitectures - Return Vector of prefered Architectures /{{{/
	338	std::vector<std::string> const Configuration::getArchitectures(bool const &Cached) {
	339	using std::string;
	340
	341	std::vector<string> static archs;
	342	if (likely(Cached == true) && archs.empty() == false)
	343	return archs;
	344
5dd4c8b8	345	archs = _config->FindVector("APT::Architectures");
3152f4aa DK	346	string const arch = _config->Find("APT::Architecture");
	347	if (unlikely(arch.empty() == true))
	348	return archs;
	349
5dd4c8b8 DK	350	if (archs.empty() == true \|\|
	351	std::find(archs.begin(), archs.end(), arch) == archs.end())
	352	archs.push_back(arch);
3152f4aa DK	353
	354	// erase duplicates and empty strings
	355	for (std::vector<string>::reverse_iterator a = archs.rbegin();
	356	a != archs.rend(); ++a) {
	357	if (a->empty() == true \|\| std::find(a + 1, archs.rend(), *a) != archs.rend())
	358	archs.erase(a.base()-1);
	359	if (a == archs.rend())
	360	break;
	361	}
	362
5dd4c8b8 DK	363	return archs;
	364	}
	365	/}}}/
	366	// checkArchitecture - are we interested in the given Architecture? /{{{/
	367	bool const Configuration::checkArchitecture(std::string const &Arch) {
	368	if (Arch == "all")
	369	return true;
	370	std::vector<std::string> const archs = getArchitectures(true);
	371	return (std::find(archs.begin(), archs.end(), Arch) != archs.end());
	372	}
	373	/}}}/
e878aedb	374	}