]> git.saurik.com Git - apt.git/blobdiff - apt-pkg/aptconfiguration.cc
fix crash when LANGUAGE is not set
[apt.git] / apt-pkg / aptconfiguration.cc
index 899004d9f0d964c1482386f4551471047e6d0014..10613f11dde7d356e43e41c924ccca7c0adc1bca 100644 (file)
@@ -8,13 +8,18 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
-#include <apt-pkg/fileutl.h>
 #include <apt-pkg/aptconfiguration.h>
 #include <apt-pkg/configuration.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/macros.h>
+#include <apt-pkg/strutl.h>
+
+#include <sys/types.h>
+#include <dirent.h>
 
-#include <vector>
-#include <string>
 #include <algorithm>
+#include <string>
+#include <vector>
                                                                        /*}}}*/
 namespace APT {
 // getCompressionTypes - Return Vector of usbale compressiontypes      /*{{{*/
@@ -96,7 +101,7 @@ const Configuration::getCompressionTypes(bool const &Cached) {
    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) {
+                               bool const &Cached, char const ** const Locale) {
        using std::string;
 
        // The detection is boring and has a lot of cornercases,
@@ -117,27 +122,64 @@ std::vector<std::string> const Configuration::getLanguages(bool const &All,
                }
        }
 
-       // get the environment language code
+       // 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);
+               }
+       }
+
+       // 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);
+       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('.') != string::npos) ? envMsg.find('.') : (lenShort + 3);
+       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, envShortIncluded = false;
+       bool envLongIncluded = true;
 
        // first cornercase: LANG=C, so we use only "en" Translation
        if (envLong == "C") {
                codes.push_back("en");
-               return codes;
+               allCodes = codes;
+               allCodes.insert(allCodes.end(), builtin.begin(), builtin.end());
+               if (All == true)
+                       return allCodes;
+               else
+                       return codes;
        }
 
+       // to save the servers from unneeded queries, we only try also long codes
+       // for languages it is realistic to have a long code translation fileā€¦
+       // TODO: Improve translation acquire system to drop them dynamic
+       char const *needLong[] = { "cs", "en", "pt", "sv", "zh", NULL };
        if (envLong != envShort) {
-               // 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...
-               char const *needLong[] = { "cs", "en", "pt", "sv", "zh", NULL };
                for (char const **l = needLong; *l != NULL; l++)
                        if (envShort.compare(*l) == 0) {
                                envLongIncluded = false;
@@ -155,7 +197,52 @@ std::vector<std::string> const Configuration::getLanguages(bool const &All,
        if (oldAcquire.empty() == false && oldAcquire != "environment") {
                if (oldAcquire != "none")
                        codes.push_back(oldAcquire);
-               return codes;
+               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;
+       // 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 = ExplodeString(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);
+               }
        }
 
        // Support settings like Acquire::Translation=none on the command line to
@@ -163,26 +250,35 @@ std::vector<std::string> const Configuration::getLanguages(bool const &All,
        string const forceLang = _config->Find("Acquire::Languages","");
        if (forceLang.empty() == false) {
                if (forceLang == "environment") {
-                       if (envLongIncluded == false)
-                               codes.push_back(envLong);
-                       if (envShortIncluded == false)
-                               codes.push_back(envShort);
-                       return codes;
+                       codes = environment;
                } else if (forceLang != "none")
                        codes.push_back(forceLang);
-               return codes;
+               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;
        }
 
        std::vector<string> const lang = _config->FindVector("Acquire::Languages");
        // the default setting -> "environment, en"
        if (lang.empty() == true) {
-               if (envLongIncluded == false)
-                       codes.push_back(envLong);
-               if (envShortIncluded == false)
-                       codes.push_back(envShort);
+               codes = environment;
                if (envShort != "en")
                        codes.push_back("en");
-               return codes;
+               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
@@ -191,32 +287,31 @@ std::vector<std::string> const Configuration::getLanguages(bool const &All,
        for (std::vector<string>::const_iterator l = lang.begin();
             l != lang.end(); l++) {
                if (*l == "environment") {
-                       if (envLongIncluded == true && envShortIncluded == true)
-                               continue;
-                       if (envLongIncluded == false) {
-                               envLongIncluded = true;
-                               if (noneSeen == false)
-                                       codes.push_back(envLong);
-                               allCodes.push_back(envLong);
-                       }
-                       if (envShortIncluded == false) {
-                               envShortIncluded = true;
+                       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(envShort);
-                               allCodes.push_back(envShort);
+                                       codes.push_back(*e);
+                               allCodes.push_back(*e);
                        }
                        continue;
                } else if (*l == "none") {
                        noneSeen = true;
                        continue;
-               } else if ((envLongIncluded == true && *l == envLong) ||
-                        (envShortIncluded == true && *l == envShort))
+               } 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