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ctest_update: Support ".git file" work trees 

Commit c3781efb (Support Git upstream branch rewrites, 2010-06-08)
assumed that ".git/FETCH_HEAD" exists inside the source tree.  Fix the
implementation to handle a work tree using a ".git file" to link to its
repository.  Use "git rev-parse --git-dir" to locate the real .git dir.
This commit is contained in:
Brad King 2010-07-26 11:40:20 -04:00
parent 65cb72f758
commit 7bf8dc1ac9
3 changed files with 61 additions and 1 deletions
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55
Source/CTest/cmCTestGIT.cxx
View File

@ -84,6 +84,54 @@ void cmCTestGIT::NoteNewRevision()
<< this->NewRevision << "\n");
}
//----------------------------------------------------------------------------
std::string cmCTestGIT::FindGitDir()
{
std::string git_dir;
// Run "git rev-parse --git-dir" to locate the real .git directory.
const char* git = this->CommandLineTool.c_str();
char const* git_rev_parse[] = {git, "rev-parse", "--git-dir", 0};
std::string git_dir_line;
OneLineParser rev_parse_out(this, "rev-parse-out> ", git_dir_line);
OutputLogger rev_parse_err(this->Log, "rev-parse-err> ");
if(this->RunChild(git_rev_parse, &rev_parse_out, &rev_parse_err))
{
git_dir = git_dir_line;
}
if(git_dir.empty())
{
git_dir = ".git";
}
// Git reports a relative path only when the .git directory is in
// the current directory.
if(git_dir[0] == '.')
{
git_dir = this->SourceDirectory + "/" + git_dir;
}
#if defined(_WIN32) && !defined(__CYGWIN__)
else if(git_dir[0] == '/')
{
// Cygwin Git reports a full path that Cygwin understands, but we
// are a Windows application. Run "cygpath" to get Windows path.
std::string cygpath_exe = cmSystemTools::GetFilenamePath(git);
cygpath_exe += "/cygpath.exe";
if(cmSystemTools::FileExists(cygpath_exe.c_str()))
{
char const* cygpath[] = {cygpath_exe.c_str(), "-w", git_dir.c_str(), 0};
OneLineParser cygpath_out(this, "cygpath-out> ", git_dir_line);
OutputLogger cygpath_err(this->Log, "cygpath-err> ");
if(this->RunChild(cygpath, &cygpath_out, &cygpath_err))
{
git_dir = git_dir_line;
}
}
}
#endif
return git_dir;
}
//----------------------------------------------------------------------------
bool cmCTestGIT::UpdateByFetchAndReset()
{
@ -121,8 +169,13 @@ bool cmCTestGIT::UpdateByFetchAndReset()
// Identify the merge head that would be used by "git pull".
std::string sha1;
{
std::string fetch_head = this->SourceDirectory + "/.git/FETCH_HEAD";
std::string fetch_head = this->FindGitDir() + "/FETCH_HEAD";
std::ifstream fin(fetch_head.c_str(), std::ios::in | std::ios::binary);
if(!fin)
{
this->Log << "Unable to open " << fetch_head << "\n";
return false;
}
std::string line;
while(sha1.empty() && cmSystemTools::GetLineFromStream(fin, line))
{

2
Source/CTest/cmCTestGIT.h
View File

@ -32,6 +32,8 @@ private:
virtual void NoteNewRevision();
virtual bool UpdateImpl();
std::string FindGitDir();
bool UpdateByFetchAndReset();
bool UpdateByCustom(std::string const& custom);
bool UpdateInternal();

5
Tests/CTestUpdateGIT.cmake.in
View File

@ -259,6 +259,11 @@ execute_process(
WORKING_DIRECTORY \"${TOP}\"
COMMAND \"${GIT}\" clone \"${REPO}\" dash-source
)
# Test .git file.
file(RENAME \"${TOP}/dash-source/.git\" \"${TOP}/dash-source/repo.git\")
file(WRITE \"${TOP}/dash-source/.git\" \"gitdir: repo.git\n\")
execute_process(
WORKING_DIRECTORY \"${TOP}/dash-source\"
COMMAND \"${GIT}\" reset --hard master~2