From 1cd1c398d18b78f4aa9d882a5de5385f4538e0be Mon Sep 17 00:00:00 2001
From: David Kalnischkies <kalnischkies@gmail.com>
Date: Wed, 7 Apr 2010 16:38:18 +0200
Subject: * apt-pkg/contrib/fileutl.cc:   - add a parent-guarded "mkdir -p" as
 CreateDirectory() * apt-pkg/acquire.{cc,h}:   - add a delayed constructor
 with Setup() for success reporting   - check for and create directories in
 Setup if needed instead of     error out unfriendly in the Constructor
 (Closes: #523920, #525783)   - optional handle a lock file in Setup() *
 cmdline/apt-get.cc:   - remove the lock file handling and let Acquire take
 care of it instead

---
 apt-pkg/contrib/fileutl.cc | 52 ++++++++++++++++++++++++++++++++++++++++++++++
 apt-pkg/contrib/fileutl.h  |  3 +++
 2 files changed, 55 insertions(+)

(limited to 'apt-pkg/contrib')

diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index 75adce305..16f7ce929 100644
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -18,6 +18,7 @@
 									/*}}}*/
 // Include Files							/*{{{*/
 #include <apt-pkg/fileutl.h>
+#include <apt-pkg/strutl.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/sptr.h>
 #include <apt-pkg/configuration.h>
@@ -197,6 +198,57 @@ bool FileExists(string File)
    return true;
 }
 									/*}}}*/
+// DirectoryExists - Check if a directory exists and is really one	/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool DirectoryExists(string const &Path)
+{
+   struct stat Buf;
+   if (stat(Path.c_str(),&Buf) != 0)
+      return false;
+   return ((Buf.st_mode & S_IFDIR) != 0);
+}
+									/*}}}*/
+// CreateDirectory - poor man's mkdir -p guarded by a parent directory	/*{{{*/
+// ---------------------------------------------------------------------
+/* This method will create all directories needed for path in good old
+   mkdir -p style but refuses to do this if Parent is not a prefix of
+   this Path. Example: /var/cache/ and /var/cache/apt/archives are given,
+   so it will create apt/archives if /var/cache exists - on the other
+   hand if the parent is /var/lib the creation will fail as this path
+   is not a parent of the path to be generated. */
+bool CreateDirectory(string const &Parent, string const &Path)
+{
+   if (Parent.empty() == true || Path.empty() == true)
+      return false;
+
+   if (DirectoryExists(Path) == true)
+      return true;
+
+   if (DirectoryExists(Parent) == false)
+      return false;
+
+   // we are not going to create directories "into the blue"
+   if (Path.find(Parent, 0) != 0)
+      return false;
+
+   vector<string> const dirs = VectorizeString(Path.substr(Parent.size()), '/');
+   string progress = Parent;
+   for (vector<string>::const_iterator d = dirs.begin(); d != dirs.end(); ++d)
+   {
+      if (d->empty() == true)
+	 continue;
+
+      progress.append("/").append(*d);
+      if (DirectoryExists(progress) == true)
+	 continue;
+
+      if (mkdir(progress.c_str(), 0755) != 0)
+	 return false;
+   }
+   return true;
+}
+									/*}}}*/
 // GetListOfFilesInDir - returns a vector of files in the given dir	/*{{{*/
 // ---------------------------------------------------------------------
 /* If an extension is given only files with this extension are included
diff --git a/apt-pkg/contrib/fileutl.h b/apt-pkg/contrib/fileutl.h
index 351d53c5e..003bd9b83 100644
--- a/apt-pkg/contrib/fileutl.h
+++ b/apt-pkg/contrib/fileutl.h
@@ -21,6 +21,7 @@
 #ifndef PKGLIB_FILEUTL_H
 #define PKGLIB_FILEUTL_H
 
+#include <apt-pkg/macros.h>
 
 #include <string>
 #include <vector>
@@ -82,6 +83,8 @@ bool RunScripts(const char *Cnf);
 bool CopyFile(FileFd &From,FileFd &To);
 int GetLock(string File,bool Errors = true);
 bool FileExists(string File);
+bool DirectoryExists(string const &Path) __attrib_const;
+bool CreateDirectory(string const &Parent, string const &Path);
 std::vector<string> GetListOfFilesInDir(string const &Dir, string const &Ext,
 					bool const &SortList, bool const &AllowNoExt=false);
 std::vector<string> GetListOfFilesInDir(string const &Dir, std::vector<string> const &Ext,
-- 
cgit v1.2.3-70-g09d2