// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: apt-cdrom.cc,v 1.35 2000/05/10 06:03:52 jgg Exp $
+// $Id: apt-cdrom.cc,v 1.45 2003/11/19 23:50:51 mdz Exp $
/* ######################################################################
APT CDROM - Tool for handling APT's CDROM database.
#include <apt-pkg/progress.h>
#include <apt-pkg/cdromutl.h>
#include <apt-pkg/strutl.h>
+#include <apt-pkg/acquire.h>
+#include <apt-pkg/acquire-item.h>
+#include <apt-pkg/cdrom.h>
#include <config.h>
+#include <apti18n.h>
+
+//#include "indexcopy.h"
-#include "indexcopy.h"
-
+#include <locale.h>
#include <iostream>
#include <fstream>
#include <vector>
#include <stdio.h>
/*}}}*/
-// FindPackages - Find the package files on the CDROM /*{{{*/
-// ---------------------------------------------------------------------
-/* We look over the cdrom for package files. This is a recursive
- search that short circuits when it his a package file in the dir.
- This speeds it up greatly as the majority of the size is in the
- binary-* sub dirs. */
-bool FindPackages(string CD,vector<string> &List,vector<string> &SList,
- string &InfoDir,unsigned int Depth = 0)
-{
- static ino_t Inodes[9];
- if (Depth >= 7)
- return true;
-
- if (CD[CD.length()-1] != '/')
- CD += '/';
-
- if (chdir(CD.c_str()) != 0)
- return _error->Errno("chdir","Unable to change to %s",CD.c_str());
-
- // Look for a .disk subdirectory
- struct stat Buf;
- if (stat(".disk",&Buf) == 0)
- {
- if (InfoDir.empty() == true)
- InfoDir = CD + ".disk/";
- }
-
- /* Aha! We found some package files. We assume that everything under
- this dir is controlled by those package files so we don't look down
- anymore */
- if (stat("Packages",&Buf) == 0 || stat("Packages.gz",&Buf) == 0)
- {
- List.push_back(CD);
-
- // Continue down if thorough is given
- if (_config->FindB("APT::CDROM::Thorough",false) == false)
- return true;
- }
- if (stat("Sources.gz",&Buf) == 0 || stat("Sources",&Buf) == 0)
- {
- SList.push_back(CD);
-
- // Continue down if thorough is given
- if (_config->FindB("APT::CDROM::Thorough",false) == false)
- return true;
- }
-
- DIR *D = opendir(".");
- if (D == 0)
- return _error->Errno("opendir","Unable to read %s",CD.c_str());
-
- // Run over the directory
- for (struct dirent *Dir = readdir(D); Dir != 0; Dir = readdir(D))
- {
- // Skip some files..
- if (strcmp(Dir->d_name,".") == 0 ||
- strcmp(Dir->d_name,"..") == 0 ||
- //strcmp(Dir->d_name,"source") == 0 ||
- strcmp(Dir->d_name,".disk") == 0 ||
- strcmp(Dir->d_name,"experimental") == 0 ||
- strcmp(Dir->d_name,"binary-all") == 0)
- continue;
-
- // See if the name is a sub directory
- struct stat Buf;
- if (stat(Dir->d_name,&Buf) != 0)
- continue;
-
- if (S_ISDIR(Buf.st_mode) == 0)
- continue;
-
- unsigned int I;
- for (I = 0; I != Depth; I++)
- if (Inodes[I] == Buf.st_ino)
- break;
- if (I != Depth)
- continue;
-
- // Store the inodes weve seen
- Inodes[Depth] = Buf.st_ino;
-
- // Descend
- if (FindPackages(CD + Dir->d_name,List,SList,InfoDir,Depth+1) == false)
- break;
-
- if (chdir(CD.c_str()) != 0)
- return _error->Errno("chdir","Unable to change to ",CD.c_str());
- };
-
- closedir(D);
-
- return !_error->PendingError();
-}
- /*}}}*/
-// DropBinaryArch - Dump dirs with a string like /binary-<foo>/ /*{{{*/
-// ---------------------------------------------------------------------
-/* Here we drop everything that is not this machines arch */
-bool DropBinaryArch(vector<string> &List)
-{
- char S[300];
- sprintf(S,"/binary-%s/",_config->Find("Apt::Architecture").c_str());
-
- for (unsigned int I = 0; I < List.size(); I++)
- {
- const char *Str = List[I].c_str();
-
- const char *Res;
- if ((Res = strstr(Str,"/binary-")) == 0)
- continue;
+using namespace std;
- // Weird, remove it.
- if (strlen(Res) < strlen(S))
- {
- List.erase(List.begin() + I);
- I--;
- continue;
- }
-
- // See if it is our arch
- if (stringcmp(Res,Res + strlen(S),S) == 0)
- continue;
-
- // Erase it
- List.erase(List.begin() + I);
- I--;
- }
-
- return true;
-}
- /*}}}*/
-// Score - We compute a 'score' for a path /*{{{*/
-// ---------------------------------------------------------------------
-/* Paths are scored based on how close they come to what I consider
- normal. That is ones that have 'dist' 'stable' 'frozen' will score
- higher than ones without. */
-int Score(string Path)
+ /*{{{*/
+class pkgCdromTextStatus : public pkgCdromStatus
{
- int Res = 0;
- if (Path.find("stable/") != string::npos)
- Res += 29;
- if (Path.find("/binary-") != string::npos)
- Res += 20;
- if (Path.find("frozen/") != string::npos)
- Res += 28;
- if (Path.find("unstable/") != string::npos)
- Res += 27;
- if (Path.find("/dists/") != string::npos)
- Res += 40;
- if (Path.find("/main/") != string::npos)
- Res += 20;
- if (Path.find("/contrib/") != string::npos)
- Res += 20;
- if (Path.find("/non-free/") != string::npos)
- Res += 20;
- if (Path.find("/non-US/") != string::npos)
- Res += 20;
- if (Path.find("/source/") != string::npos)
- Res += 10;
- if (Path.find("/debian/") != string::npos)
- Res -= 10;
- return Res;
-}
- /*}}}*/
-// DropRepeats - Drop repeated files resulting from symlinks /*{{{*/
-// ---------------------------------------------------------------------
-/* Here we go and stat every file that we found and strip dup inodes. */
-bool DropRepeats(vector<string> &List,const char *Name)
+protected:
+ OpTextProgress Progress;
+ void Prompt(const char *Text);
+ string PromptLine(const char *Text);
+ bool AskCdromName(string &name);
+
+public:
+ virtual void Update(string text, int current);
+ virtual bool ChangeCdrom();
+ virtual OpProgress* GetOpProgress();
+};
+
+void pkgCdromTextStatus::Prompt(const char *Text)
{
- // Get a list of all the inodes
- ino_t *Inodes = new ino_t[List.size()];
- for (unsigned int I = 0; I != List.size(); I++)
- {
- struct stat Buf;
- if (stat((List[I] + Name).c_str(),&Buf) != 0 &&
- stat((List[I] + Name + ".gz").c_str(),&Buf) != 0)
- _error->Errno("stat","Failed to stat %s%s",List[I].c_str(),
- Name);
- Inodes[I] = Buf.st_ino;
- }
-
- if (_error->PendingError() == true)
- return false;
-
- // Look for dups
- for (unsigned int I = 0; I != List.size(); I++)
- {
- for (unsigned int J = I+1; J < List.size(); J++)
- {
- // No match
- if (Inodes[J] != Inodes[I])
- continue;
-
- // We score the two paths.. and erase one
- int ScoreA = Score(List[I]);
- int ScoreB = Score(List[J]);
- if (ScoreA < ScoreB)
- {
- List[I] = string();
- break;
- }
-
- List[J] = string();
- }
- }
-
- // Wipe erased entries
- for (unsigned int I = 0; I < List.size();)
- {
- if (List[I].empty() == false)
- I++;
- else
- List.erase(List.begin()+I);
- }
-
- return true;
+ char C;
+ cout << Text << ' ' << flush;
+ read(STDIN_FILENO,&C,1);
+ if (C != '\n')
+ cout << endl;
}
- /*}}}*/
-// ReduceSourceList - Takes the path list and reduces it /*{{{*/
-// ---------------------------------------------------------------------
-/* This takes the list of source list expressed entires and collects
- similar ones to form a single entry for each dist */
-bool ReduceSourcelist(string CD,vector<string> &List)
+string pkgCdromTextStatus::PromptLine(const char *Text)
{
- sort(List.begin(),List.end());
+ cout << Text << ':' << endl;
- // Collect similar entries
- for (vector<string>::iterator I = List.begin(); I != List.end(); I++)
- {
- // Find a space..
- string::size_type Space = (*I).find(' ');
- if (Space == string::npos)
- continue;
- string::size_type SSpace = (*I).find(' ',Space + 1);
- if (SSpace == string::npos)
- continue;
-
- string Word1 = string(*I,Space,SSpace-Space);
- for (vector<string>::iterator J = List.begin(); J != I; J++)
- {
- // Find a space..
- string::size_type Space2 = (*J).find(' ');
- if (Space2 == string::npos)
- continue;
- string::size_type SSpace2 = (*J).find(' ',Space2 + 1);
- if (SSpace2 == string::npos)
- continue;
-
- if (string(*J,Space2,SSpace2-Space2) != Word1)
- continue;
-
- *J += string(*I,SSpace);
- *I = string();
- }
- }
-
- // Wipe erased entries
- for (unsigned int I = 0; I < List.size();)
- {
- if (List[I].empty() == false)
- I++;
- else
- List.erase(List.begin()+I);
- }
+ string Res;
+ getline(cin,Res);
+ return Res;
}
- /*}}}*/
-// WriteDatabase - Write the CDROM Database file /*{{{*/
-// ---------------------------------------------------------------------
-/* We rewrite the configuration class associated with the cdrom database. */
-bool WriteDatabase(Configuration &Cnf)
-{
- string DFile = _config->FindFile("Dir::State::cdroms");
- string NewFile = DFile + ".new";
-
- unlink(NewFile.c_str());
- ofstream Out(NewFile.c_str());
- if (!Out)
- return _error->Errno("ofstream::ofstream",
- "Failed to open %s.new",DFile.c_str());
-
- /* Write out all of the configuration directives by walking the
- configuration tree */
- const Configuration::Item *Top = Cnf.Tree(0);
- for (; Top != 0;)
- {
- // Print the config entry
- if (Top->Value.empty() == false)
- Out << Top->FullTag() + " \"" << Top->Value << "\";" << endl;
-
- if (Top->Child != 0)
- {
- Top = Top->Child;
- continue;
- }
-
- while (Top != 0 && Top->Next == 0)
- Top = Top->Parent;
- if (Top != 0)
- Top = Top->Next;
- }
- Out.close();
-
- rename(DFile.c_str(),string(DFile + '~').c_str());
- if (rename(NewFile.c_str(),DFile.c_str()) != 0)
- return _error->Errno("rename","Failed to rename %s.new to %s",
- DFile.c_str(),DFile.c_str());
-
- return true;
-}
- /*}}}*/
-// WriteSourceList - Write an updated sourcelist /*{{{*/
-// ---------------------------------------------------------------------
-/* This reads the old source list and copies it into the new one. It
- appends the new CDROM entires just after the first block of comments.
- This places them first in the file. It also removes any old entries
- that were the same. */
-bool WriteSourceList(string Name,vector<string> &List,bool Source)
+bool pkgCdromTextStatus::AskCdromName(string &name)
{
- if (List.size() == 0)
- return true;
-
- string File = _config->FindFile("Dir::Etc::sourcelist");
-
- // Open the stream for reading
- ifstream F(File.c_str(),ios::in | ios::nocreate);
- if (!F != 0)
- return _error->Errno("ifstream::ifstream","Opening %s",File.c_str());
-
- string NewFile = File + ".new";
- unlink(NewFile.c_str());
- ofstream Out(NewFile.c_str());
- if (!Out)
- return _error->Errno("ofstream::ofstream",
- "Failed to open %s.new",File.c_str());
-
- // Create a short uri without the path
- string ShortURI = "cdrom:[" + Name + "]/";
- string ShortURI2 = "cdrom:" + Name + "/"; // For Compatibility
-
- const char *Type;
- if (Source == true)
- Type = "deb-src";
- else
- Type = "deb";
-
- char Buffer[300];
- int CurLine = 0;
- bool First = true;
- while (F.eof() == false)
- {
- F.getline(Buffer,sizeof(Buffer));
- CurLine++;
- _strtabexpand(Buffer,sizeof(Buffer));
- _strstrip(Buffer);
-
- // Comment or blank
- if (Buffer[0] == '#' || Buffer[0] == 0)
- {
- Out << Buffer << endl;
- continue;
- }
-
- if (First == true)
- {
- for (vector<string>::iterator I = List.begin(); I != List.end(); I++)
- {
- string::size_type Space = (*I).find(' ');
- if (Space == string::npos)
- return _error->Error("Internal error");
- Out << Type << " cdrom:[" << Name << "]/" << string(*I,0,Space) <<
- " " << string(*I,Space+1) << endl;
- }
- }
- First = false;
-
- // Grok it
- string cType;
- string URI;
- const char *C = Buffer;
- if (ParseQuoteWord(C,cType) == false ||
- ParseQuoteWord(C,URI) == false)
- {
- Out << Buffer << endl;
- continue;
- }
-
- // Emit lines like this one
- if (cType != Type || (string(URI,0,ShortURI.length()) != ShortURI &&
- string(URI,0,ShortURI.length()) != ShortURI2))
- {
- Out << Buffer << endl;
- continue;
- }
- }
-
- // Just in case the file was empty
- if (First == true)
- {
- for (vector<string>::iterator I = List.begin(); I != List.end(); I++)
- {
- string::size_type Space = (*I).find(' ');
- if (Space == string::npos)
- return _error->Error("Internal error");
+ cout << _("Please provide a name for this Disc, such as 'Debian 2.1r1 Disk 1'") << flush;
+ name = PromptLine("");
- Out << "deb cdrom:[" << Name << "]/" << string(*I,0,Space) <<
- " " << string(*I,Space+1) << endl;
- }
- }
-
- Out.close();
-
- rename(File.c_str(),string(File + '~').c_str());
- if (rename(NewFile.c_str(),File.c_str()) != 0)
- return _error->Errno("rename","Failed to rename %s.new to %s",
- File.c_str(),File.c_str());
-
return true;
}
- /*}}}*/
+
-// Prompt - Simple prompt /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-void Prompt(const char *Text)
+void pkgCdromTextStatus::Update(string text, int current)
{
- char C;
- cout << Text << ' ' << flush;
- read(STDIN_FILENO,&C,1);
- if (C != '\n')
- cout << endl;
+ if(text.size() > 0)
+ cout << text << flush;
}
- /*}}}*/
-// PromptLine - Prompt for an input line /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-string PromptLine(const char *Text)
+
+bool pkgCdromTextStatus::ChangeCdrom()
{
- cout << Text << ':' << endl;
-
- string Res;
- getline(cin,Res);
- return Res;
+ Prompt(_("Please insert a Disc in the drive and press enter"));
+ return true;
}
+
+OpProgress* pkgCdromTextStatus::GetOpProgress()
+{
+ return &Progress;
+};
+
/*}}}*/
// DoAdd - Add a new CDROM /*{{{*/
verify them. Then rewrite the database files */
bool DoAdd(CommandLine &)
{
- // Startup
- string CDROM = _config->FindDir("Acquire::cdrom::mount","/cdrom/");
- if (CDROM[0] == '.')
- CDROM= SafeGetCWD() + '/' + CDROM;
-
- cout << "Using CD-ROM mount point " << CDROM << endl;
-
- // Read the database
- Configuration Database;
- string DFile = _config->FindFile("Dir::State::cdroms");
- if (FileExists(DFile) == true)
- {
- if (ReadConfigFile(Database,DFile) == false)
- return _error->Error("Unable to read the cdrom database %s",
- DFile.c_str());
- }
-
- // Unmount the CD and get the user to put in the one they want
- if (_config->FindB("APT::CDROM::NoMount",false) == false)
- {
- cout << "Unmounting CD-ROM" << endl;
- UnmountCdrom(CDROM);
-
- // Mount the new CDROM
- Prompt("Please insert a Disc in the drive and press enter");
- cout << "Mounting CD-ROM" << endl;
- if (MountCdrom(CDROM) == false)
- return _error->Error("Failed to mount the cdrom.");
- }
-
- // Hash the CD to get an ID
- cout << "Identifying.. " << flush;
- string ID;
- if (IdentCdrom(CDROM,ID) == false)
- {
- cout << endl;
- return false;
- }
-
- cout << '[' << ID << ']' << endl;
-
- cout << "Scanning Disc for index files.. " << flush;
- // Get the CD structure
- vector<string> List;
- vector<string> sList;
- string StartDir = SafeGetCWD();
- string InfoDir;
- if (FindPackages(CDROM,List,sList,InfoDir) == false)
- {
- cout << endl;
- return false;
- }
-
- chdir(StartDir.c_str());
-
- if (_config->FindB("Debug::aptcdrom",false) == true)
- {
- cout << "I found (binary):" << endl;
- for (vector<string>::iterator I = List.begin(); I != List.end(); I++)
- cout << *I << endl;
- cout << "I found (source):" << endl;
- for (vector<string>::iterator I = sList.begin(); I != sList.end(); I++)
- cout << *I << endl;
- }
-
- // Fix up the list
- DropBinaryArch(List);
- DropRepeats(List,"Packages");
- DropRepeats(sList,"Sources");
- cout << "Found " << List.size() << " package indexes and " << sList.size() <<
- " source indexes." << endl;
-
- if (List.size() == 0 && sList.size() == 0)
- return _error->Error("Unable to locate any package files, perhaps this is not a Debian Disc");
-
- // Check if the CD is in the database
- string Name;
- if (Database.Exists("CD::" + ID) == false ||
- _config->FindB("APT::CDROM::Rename",false) == true)
- {
- // Try to use the CDs label if at all possible
- if (InfoDir.empty() == false &&
- FileExists(InfoDir + "/info") == true)
- {
- ifstream F(string(InfoDir + "/info").c_str());
- if (!F == 0)
- getline(F,Name);
-
- if (Name.empty() == false)
- {
- cout << "Found label '" << Name << "'" << endl;
- Database.Set("CD::" + ID + "::Label",Name);
- }
- }
-
- if (_config->FindB("APT::CDROM::Rename",false) == true ||
- Name.empty() == true)
- {
- cout << "Please provide a name for this Disc, such as 'Debian 2.1r1 Disk 1'";
- while (1)
- {
- Name = PromptLine("");
- if (Name.empty() == false &&
- Name.find('"') == string::npos &&
- Name.find('[') == string::npos &&
- Name.find(']') == string::npos)
- break;
- cout << "That is not a valid name, try again " << endl;
- }
- }
- }
- else
- Name = Database.Find("CD::" + ID);
-
- // Escape special characters
- string::iterator J = Name.begin();
- for (; J != Name.end(); J++)
- if (*J == '"' || *J == ']' || *J == '[')
- *J = '_';
-
- Database.Set("CD::" + ID,Name);
- cout << "This Disc is called:" << endl << " '" << Name << "'" << endl;
-
- // Copy the package files to the state directory
- PackageCopy Copy;
- SourceCopy SrcCopy;
- if (Copy.CopyPackages(CDROM,Name,List) == false ||
- SrcCopy.CopyPackages(CDROM,Name,sList) == false)
- return false;
-
- ReduceSourcelist(CDROM,List);
- ReduceSourcelist(CDROM,sList);
-
- // Write the database and sourcelist
- if (_config->FindB("APT::cdrom::NoAct",false) == false)
- {
- if (WriteDatabase(Database) == false)
- return false;
-
- cout << "Writing new source list" << endl;
- if (WriteSourceList(Name,List,false) == false ||
- WriteSourceList(Name,sList,true) == false)
- return false;
- }
-
- // Print the sourcelist entries
- cout << "Source List entries for this Disc are:" << endl;
- for (vector<string>::iterator I = List.begin(); I != List.end(); I++)
- {
- string::size_type Space = (*I).find(' ');
- if (Space == string::npos)
- return _error->Error("Internal error");
-
- cout << "deb cdrom:[" << Name << "]/" << string(*I,0,Space) <<
- " " << string(*I,Space+1) << endl;
- }
-
- for (vector<string>::iterator I = sList.begin(); I != sList.end(); I++)
- {
- string::size_type Space = (*I).find(' ');
- if (Space == string::npos)
- return _error->Error("Internal error");
-
- cout << "deb-src cdrom:[" << Name << "]/" << string(*I,0,Space) <<
- " " << string(*I,Space+1) << endl;
- }
-
- cout << "Repeat this process for the rest of the CDs in your set." << endl;
-
- // Unmount and finish
- if (_config->FindB("APT::CDROM::NoMount",false) == false)
- UnmountCdrom(CDROM);
-
- return true;
+ bool res = false;
+ pkgCdromTextStatus log;
+ pkgCdrom cdrom;
+ res = cdrom.Add(&log);
+ if(res)
+ cout << _("Repeat this process for the rest of the CDs in your set.") << endl;
+ return res;
+}
+ /*}}}*/
+// DoIdent - Ident a CDROM /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool DoIdent(CommandLine &)
+{
+ string ident;
+ pkgCdromTextStatus log;
+ pkgCdrom cdrom;
+ return cdrom.Ident(ident, &log);
}
/*}}}*/
/* */
int ShowHelp()
{
- cout << PACKAGE << ' ' << VERSION << " for " << ARCHITECTURE <<
- " compiled on " << __DATE__ << " " << __TIME__ << endl;
+ ioprintf(cout,_("%s %s for %s compiled on %s %s\n"),PACKAGE,VERSION,
+ COMMON_ARCH,__DATE__,__TIME__);
if (_config->FindB("version") == true)
- return 100;
-
- cout << "Usage: apt-cdrom [options] command" << endl;
- cout << endl;
- cout << "apt-cdrom is a tool to add CDROM's to APT's source list. The " << endl;
- cout << "CDROM mount point and device information is taken from apt.conf" << endl;
- cout << "and /etc/fstab." << endl;
- cout << endl;
- cout << "Commands:" << endl;
- cout << " add - Add a CDROM" << endl;
- cout << endl;
- cout << "Options:" << endl;
- cout << " -h This help text" << endl;
- cout << " -d CD-ROM mount point" << endl;
- cout << " -r Rename a recognized CD-ROM" << endl;
- cout << " -m No mounting" << endl;
- cout << " -f Fast mode, don't check package files" << endl;
- cout << " -a Thorough scan mode" << endl;
- cout << " -c=? Read this configuration file" << endl;
- cout << " -o=? Set an arbitary configuration option, eg -o dir::cache=/tmp" << endl;
- cout << "See fstab(5)" << endl;
- return 100;
+ return 0;
+
+ cout <<
+ "Usage: apt-cdrom [options] command\n"
+ "\n"
+ "apt-cdrom is a tool to add CDROM's to APT's source list. The\n"
+ "CDROM mount point and device information is taken from apt.conf\n"
+ "and /etc/fstab.\n"
+ "\n"
+ "Commands:\n"
+ " add - Add a CDROM\n"
+ " ident - Report the identity of a CDROM\n"
+ "\n"
+ "Options:\n"
+ " -h This help text\n"
+ " -d CD-ROM mount point\n"
+ " -r Rename a recognized CD-ROM\n"
+ " -m No mounting\n"
+ " -f Fast mode, don't check package files\n"
+ " -a Thorough scan mode\n"
+ " -c=? Read this configuration file\n"
+ " -o=? Set an arbitrary configuration option, eg -o dir::cache=/tmp\n"
+ "See fstab(5)\n";
+ return 0;
}
/*}}}*/
{0,0,0,0}};
CommandLine::Dispatch Cmds[] = {
{"add",&DoAdd},
+ {"ident",&DoIdent},
{0,0}};
-
+
+ // Set up gettext support
+ setlocale(LC_ALL,"");
+ textdomain(PACKAGE);
+
// Parse the command line and initialize the package library
CommandLine CmdL(Args,_config);
- if (pkgInitialize(*_config) == false ||
- CmdL.Parse(argc,argv) == false)
+ if (pkgInitConfig(*_config) == false ||
+ CmdL.Parse(argc,argv) == false ||
+ pkgInitSystem(*_config,_system) == false)
{
_error->DumpErrors();
return 100;
return ShowHelp();
// Deal with stdout not being a tty
- if (ttyname(STDOUT_FILENO) == 0 && _config->FindI("quiet",0) < 1)
+ if (isatty(STDOUT_FILENO) && _config->FindI("quiet",0) < 1)
_config->Set("quiet","1");
// Match the operation
projects / apt.git / blobdiff