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authorDavid Kalnischkies <kalnischkies@gmail.com>2012-04-23 19:11:11 +0200
committerDavid Kalnischkies <kalnischkies@gmail.com>2012-04-23 19:11:11 +0200
commitec76891fa17c77f8fd28b9b6e11ef2d7547afe7e (patch)
tree76eea11b157ce2b0094c370d7d9e2e6e08cffab7 /apt-pkg/contrib
parentecdc4e74bc5ba7eadeff3276bc3707c127d9989c (diff)
normalize a bit by replacing // and /./ with / in FindFile
Diffstat (limited to 'apt-pkg/contrib')
-rw-r--r--apt-pkg/contrib/configuration.cc68
1 files changed, 38 insertions, 30 deletions
diff --git a/apt-pkg/contrib/configuration.cc b/apt-pkg/contrib/configuration.cc
index ff80dfaf8..ce02f1bd2 100644
--- a/apt-pkg/contrib/configuration.cc
+++ b/apt-pkg/contrib/configuration.cc
@@ -171,48 +171,56 @@ string Configuration::Find(const char *Name,const char *Default) const
string Configuration::FindFile(const char *Name,const char *Default) const
{
const Item *RootItem = Lookup("RootDir");
- std::string rootDir = (RootItem == 0) ? "" : RootItem->Value;
- if(rootDir.size() > 0 && rootDir[rootDir.size() - 1] != '/')
- rootDir.push_back('/');
+ std::string result = (RootItem == 0) ? "" : RootItem->Value;
+ if(result.empty() == false && result[result.size() - 1] != '/')
+ result.push_back('/');
const Item *Itm = Lookup(Name);
if (Itm == 0 || Itm->Value.empty() == true)
{
- if (Default == 0)
- return rootDir;
- else
- return rootDir + Default;
+ if (Default != 0)
+ result.append(Default);
}
-
- string val = Itm->Value;
- while (Itm->Parent != 0)
+ else
{
- if (Itm->Parent->Value.empty() == true)
+ string val = Itm->Value;
+ while (Itm->Parent != 0)
{
- Itm = Itm->Parent;
- continue;
- }
+ if (Itm->Parent->Value.empty() == true)
+ {
+ Itm = Itm->Parent;
+ continue;
+ }
- // Absolute
- if (val.length() >= 1 && val[0] == '/')
- break;
+ // Absolute
+ if (val.length() >= 1 && val[0] == '/')
+ break;
- // ~/foo or ./foo
- if (val.length() >= 2 && (val[0] == '~' || val[0] == '.') && val[1] == '/')
- break;
-
- // ../foo
- if (val.length() >= 3 && val[0] == '.' && val[1] == '.' && val[2] == '/')
- break;
-
- if (Itm->Parent->Value.end()[-1] != '/')
- val.insert(0, "/");
+ // ~/foo or ./foo
+ if (val.length() >= 2 && (val[0] == '~' || val[0] == '.') && val[1] == '/')
+ break;
+
+ // ../foo
+ if (val.length() >= 3 && val[0] == '.' && val[1] == '.' && val[2] == '/')
+ break;
+
+ if (Itm->Parent->Value.end()[-1] != '/')
+ val.insert(0, "/");
- val.insert(0, Itm->Parent->Value);
- Itm = Itm->Parent;
+ val.insert(0, Itm->Parent->Value);
+ Itm = Itm->Parent;
+ }
+ result.append(val);
}
- return rootDir + val;
+ // do some normalisation by removing // and /./ from the path
+ size_t found = string::npos;
+ while ((found = result.find("/./")) != string::npos)
+ result.replace(found, 3, "/");
+ while ((found = result.find("//")) != string::npos)
+ result.replace(found, 2, "/");
+
+ return result;
}
/*}}}*/
// Configuration::FindDir - Find a directory name /*{{{*/