CMake/Source/CTest/cmCTestGIT.cxx

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/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc.
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#include "cmCTestGIT.h"
#include "cmCTest.h"
#include "cmSystemTools.h"
#include "cmXMLSafe.h"
#include <cmsys/RegularExpression.hxx>
#include <cmsys/ios/sstream>
#include <cmsys/Process.h>
#include <cmsys/FStream.hxx>
#include <sys/types.h>
#include <time.h>
#include <ctype.h>
//----------------------------------------------------------------------------
static unsigned int cmCTestGITVersion(unsigned int epic, unsigned int major,
unsigned int minor, unsigned int fix)
{
// 1.6.5.0 maps to 10605000
return fix + minor*1000 + major*100000 + epic*10000000;
}
//----------------------------------------------------------------------------
cmCTestGIT::cmCTestGIT(cmCTest* ct, std::ostream& log):
cmCTestGlobalVC(ct, log)
{
this->PriorRev = this->Unknown;
this->CurrentGitVersion = 0;
}
//----------------------------------------------------------------------------
cmCTestGIT::~cmCTestGIT()
{
}
//----------------------------------------------------------------------------
class cmCTestGIT::OneLineParser: public cmCTestVC::LineParser
{
public:
OneLineParser(cmCTestGIT* git, const char* prefix,
std::string& l): Line1(l)
{
this->SetLog(&git->Log, prefix);
}
private:
std::string& Line1;
virtual bool ProcessLine()
{
// Only the first line is of interest.
this->Line1 = this->Line;
return false;
}
};
//----------------------------------------------------------------------------
std::string cmCTestGIT::GetWorkingRevision()
{
// Run plumbing "git rev-list" to get work tree revision.
const char* git = this->CommandLineTool.c_str();
const char* git_rev_list[] = {git, "rev-list", "-n", "1", "HEAD", "--", 0};
std::string rev;
OneLineParser out(this, "rl-out> ", rev);
OutputLogger err(this->Log, "rl-err> ");
this->RunChild(git_rev_list, &out, &err);
return rev;
}
//----------------------------------------------------------------------------
void cmCTestGIT::NoteOldRevision()
{
this->OldRevision = this->GetWorkingRevision();
cmCTestLog(this->CTest, HANDLER_OUTPUT, " Old revision of repository is: "
<< this->OldRevision << "\n");
this->PriorRev.Rev = this->OldRevision;
}
//----------------------------------------------------------------------------
void cmCTestGIT::NoteNewRevision()
{
this->NewRevision = this->GetWorkingRevision();
cmCTestLog(this->CTest, HANDLER_OUTPUT, " New revision of repository is: "
<< 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;
}
//----------------------------------------------------------------------------
std::string cmCTestGIT::FindTopDir()
{
std::string top_dir = this->SourceDirectory;
// Run "git rev-parse --show-cdup" to locate the top of the tree.
const char* git = this->CommandLineTool.c_str();
char const* git_rev_parse[] = {git, "rev-parse", "--show-cdup", 0};
std::string cdup;
OneLineParser rev_parse_out(this, "rev-parse-out> ", cdup);
OutputLogger rev_parse_err(this->Log, "rev-parse-err> ");
if(this->RunChild(git_rev_parse, &rev_parse_out, &rev_parse_err) &&
!cdup.empty())
{
top_dir += "/";
top_dir += cdup;
top_dir = cmSystemTools::CollapseFullPath(top_dir);
}
return top_dir;
}
//----------------------------------------------------------------------------
bool cmCTestGIT::UpdateByFetchAndReset()
{
const char* git = this->CommandLineTool.c_str();
// Use "git fetch" to get remote commits.
std::vector<char const*> git_fetch;
git_fetch.push_back(git);
git_fetch.push_back("fetch");
// Add user-specified update options.
std::string opts = this->CTest->GetCTestConfiguration("UpdateOptions");
if(opts.empty())
{
opts = this->CTest->GetCTestConfiguration("GITUpdateOptions");
}
std::vector<std::string> args = cmSystemTools::ParseArguments(opts.c_str());
for(std::vector<std::string>::const_iterator ai = args.begin();
ai != args.end(); ++ai)
{
git_fetch.push_back(ai->c_str());
}
// Sentinel argument.
git_fetch.push_back(0);
// Fetch upstream refs.
OutputLogger fetch_out(this->Log, "fetch-out> ");
OutputLogger fetch_err(this->Log, "fetch-err> ");
if(!this->RunUpdateCommand(&git_fetch[0], &fetch_out, &fetch_err))
{
return false;
}
// Identify the merge head that would be used by "git pull".
std::string sha1;
{
std::string fetch_head = this->FindGitDir() + "/FETCH_HEAD";
cmsys::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))
{
this->Log << "FETCH_HEAD> " << line << "\n";
if(line.find("\tnot-for-merge\t") == line.npos)
{
std::string::size_type pos = line.find('\t');
if(pos != line.npos)
{
sha1 = line.substr(0, pos);
}
}
}
if(sha1.empty())
{
this->Log << "FETCH_HEAD has no upstream branch candidate!\n";
return false;
}
}
// Reset the local branch to point at that tracked from upstream.
char const* git_reset[] = {git, "reset", "--hard", sha1.c_str(), 0};
OutputLogger reset_out(this->Log, "reset-out> ");
OutputLogger reset_err(this->Log, "reset-err> ");
return this->RunChild(&git_reset[0], &reset_out, &reset_err);
}
//----------------------------------------------------------------------------
bool cmCTestGIT::UpdateByCustom(std::string const& custom)
{
std::vector<std::string> git_custom_command;
cmSystemTools::ExpandListArgument(custom, git_custom_command, true);
std::vector<char const*> git_custom;
for(std::vector<std::string>::const_iterator
i = git_custom_command.begin(); i != git_custom_command.end(); ++i)
{
git_custom.push_back(i->c_str());
}
git_custom.push_back(0);
OutputLogger custom_out(this->Log, "custom-out> ");
OutputLogger custom_err(this->Log, "custom-err> ");
return this->RunUpdateCommand(&git_custom[0], &custom_out, &custom_err);
}
//----------------------------------------------------------------------------
bool cmCTestGIT::UpdateInternal()
{
std::string custom = this->CTest->GetCTestConfiguration("GITUpdateCustom");
if(!custom.empty())
{
return this->UpdateByCustom(custom);
}
return this->UpdateByFetchAndReset();
}
//----------------------------------------------------------------------------
bool cmCTestGIT::UpdateImpl()
{
if(!this->UpdateInternal())
{
return false;
}
std::string top_dir = this->FindTopDir();
const char* git = this->CommandLineTool.c_str();
const char* recursive = "--recursive";
// Git < 1.6.5.0 did not support --recursive
if(this->GetGitVersion() < cmCTestGITVersion(1,6,5,0))
{
recursive = 0;
// No need to require >= 1.6.5.0 if there are no submodules.
if(cmSystemTools::FileExists((top_dir + "/.gitmodules").c_str()))
{
this->Log << "Git < 1.6.5.0 cannot update submodules recursively\n";
}
}
char const* git_submodule[] = {git, "submodule", "update", recursive, 0};
OutputLogger submodule_out(this->Log, "submodule-out> ");
OutputLogger submodule_err(this->Log, "submodule-err> ");
return this->RunChild(git_submodule, &submodule_out, &submodule_err,
top_dir.c_str());
}
//----------------------------------------------------------------------------
unsigned int cmCTestGIT::GetGitVersion()
{
if(!this->CurrentGitVersion)
{
const char* git = this->CommandLineTool.c_str();
char const* git_version[] = {git, "--version", 0};
std::string version;
OneLineParser version_out(this, "version-out> ", version);
OutputLogger version_err(this->Log, "version-err> ");
unsigned int v[4] = {0,0,0,0};
if(this->RunChild(git_version, &version_out, &version_err) &&
sscanf(version.c_str(), "git version %u.%u.%u.%u",
&v[0], &v[1], &v[2], &v[3]) >= 3)
{
this->CurrentGitVersion = cmCTestGITVersion(v[0], v[1], v[2], v[3]);
}
}
return this->CurrentGitVersion;
}
//----------------------------------------------------------------------------
/* Diff format:
:src-mode dst-mode src-sha1 dst-sha1 status\0
src-path\0
[dst-path\0]
The format is repeated for every file changed. The [dst-path\0]
line appears only for lines with status 'C' or 'R'. See 'git help
diff-tree' for details.
*/
class cmCTestGIT::DiffParser: public cmCTestVC::LineParser
{
public:
DiffParser(cmCTestGIT* git, const char* prefix):
LineParser('\0', false), GIT(git), DiffField(DiffFieldNone)
{
this->SetLog(&git->Log, prefix);
}
typedef cmCTestGIT::Change Change;
std::vector<Change> Changes;
protected:
cmCTestGIT* GIT;
enum DiffFieldType { DiffFieldNone, DiffFieldChange,
DiffFieldSrc, DiffFieldDst };
DiffFieldType DiffField;
Change CurChange;
void DiffReset()
{
this->DiffField = DiffFieldNone;
this->Changes.clear();
}
virtual bool ProcessLine()
{
if(this->Line[0] == ':')
{
this->DiffField = DiffFieldChange;
this->CurChange = Change();
}
if(this->DiffField == DiffFieldChange)
{
// :src-mode dst-mode src-sha1 dst-sha1 status
if(this->Line[0] != ':')
{
this->DiffField = DiffFieldNone;
return true;
}
const char* src_mode_first = this->Line.c_str()+1;
const char* src_mode_last = this->ConsumeField(src_mode_first);
const char* dst_mode_first = this->ConsumeSpace(src_mode_last);
const char* dst_mode_last = this->ConsumeField(dst_mode_first);
const char* src_sha1_first = this->ConsumeSpace(dst_mode_last);
const char* src_sha1_last = this->ConsumeField(src_sha1_first);
const char* dst_sha1_first = this->ConsumeSpace(src_sha1_last);
const char* dst_sha1_last = this->ConsumeField(dst_sha1_first);
const char* status_first = this->ConsumeSpace(dst_sha1_last);
const char* status_last = this->ConsumeField(status_first);
if(status_first != status_last)
{
this->CurChange.Action = *status_first;
this->DiffField = DiffFieldSrc;
}
else
{
this->DiffField = DiffFieldNone;
}
}
else if(this->DiffField == DiffFieldSrc)
{
// src-path
if(this->CurChange.Action == 'C')
{
// Convert copy to addition of destination.
this->CurChange.Action = 'A';
this->DiffField = DiffFieldDst;
}
else if(this->CurChange.Action == 'R')
{
// Convert rename to deletion of source and addition of destination.
this->CurChange.Action = 'D';
this->CurChange.Path = this->Line;
this->Changes.push_back(this->CurChange);
this->CurChange = Change('A');
this->DiffField = DiffFieldDst;
}
else
{
this->CurChange.Path = this->Line;
this->Changes.push_back(this->CurChange);
this->DiffField = this->DiffFieldNone;
}
}
else if(this->DiffField == DiffFieldDst)
{
// dst-path
this->CurChange.Path = this->Line;
this->Changes.push_back(this->CurChange);
this->DiffField = this->DiffFieldNone;
}
return true;
}
const char* ConsumeSpace(const char* c)
{
while(*c && isspace(*c)) { ++c; }
return c;
}
const char* ConsumeField(const char* c)
{
while(*c && !isspace(*c)) { ++c; }
return c;
}
};
//----------------------------------------------------------------------------
/* Commit format:
commit ...\n
tree ...\n
parent ...\n
author ...\n
committer ...\n
\n
Log message indented by (4) spaces\n
(even blank lines have the spaces)\n
[[
\n
[Diff format]
OR
\0
]]
The header may have more fields. See 'git help diff-tree'.
*/
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class cmCTestGIT::CommitParser: public cmCTestGIT::DiffParser
{
public:
CommitParser(cmCTestGIT* git, const char* prefix):
DiffParser(git, prefix), Section(SectionHeader)
{
this->Separator = SectionSep[this->Section];
}
private:
typedef cmCTestGIT::Revision Revision;
enum SectionType { SectionHeader, SectionBody, SectionDiff, SectionCount };
static char const SectionSep[SectionCount];
SectionType Section;
Revision Rev;
struct Person
{
std::string Name;
std::string EMail;
unsigned long Time;
long TimeZone;
Person(): Name(), EMail(), Time(0), TimeZone(0) {}
};
void ParsePerson(const char* str, Person& person)
{
// Person Name <person@domain.com> 1234567890 +0000
const char* c = str;
while(*c && isspace(*c)) { ++c; }
const char* name_first = c;
while(*c && *c != '<') { ++c; }
const char* name_last = c;
while(name_last != name_first && isspace(*(name_last-1))) { --name_last; }
person.Name.assign(name_first, name_last-name_first);
const char* email_first = *c? ++c : c;
while(*c && *c != '>') { ++c; }
const char* email_last = *c? c++ : c;
person.EMail.assign(email_first, email_last-email_first);
person.Time = strtoul(c, (char**)&c, 10);
person.TimeZone = strtol(c, (char**)&c, 10);
}
virtual bool ProcessLine()
{
if(this->Line.empty())
{
if(this->Section == SectionBody && this->LineEnd == '\0')
{
// Skip SectionDiff
this->NextSection();
}
this->NextSection();
}
else
{
switch(this->Section)
{
case SectionHeader: this->DoHeaderLine(); break;
case SectionBody: this->DoBodyLine(); break;
case SectionDiff: this->DiffParser::ProcessLine(); break;
case SectionCount: break; // never happens
}
}
return true;
}
void NextSection()
{
this->Section = SectionType((this->Section+1) % SectionCount);
this->Separator = SectionSep[this->Section];
if(this->Section == SectionHeader)
{
this->GIT->DoRevision(this->Rev, this->Changes);
this->Rev = Revision();
this->DiffReset();
}
}
void DoHeaderLine()
{
// Look for header fields that we need.
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if(cmHasLiteralPrefix(this->Line.c_str(), "commit "))
{
this->Rev.Rev = this->Line.c_str()+7;
}
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else if(cmHasLiteralPrefix(this->Line.c_str(), "author "))
{
Person author;
this->ParsePerson(this->Line.c_str()+7, author);
this->Rev.Author = author.Name;
this->Rev.EMail = author.EMail;
this->Rev.Date = this->FormatDateTime(author);
}
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else if(cmHasLiteralPrefix(this->Line.c_str(), "committer "))
{
Person committer;
this->ParsePerson(this->Line.c_str()+10, committer);
this->Rev.Committer = committer.Name;
this->Rev.CommitterEMail = committer.EMail;
this->Rev.CommitDate = this->FormatDateTime(committer);
}
}
void DoBodyLine()
{
// Commit log lines are indented by 4 spaces.
if(this->Line.size() >= 4)
{
this->Rev.Log += this->Line.substr(4);
}
this->Rev.Log += "\n";
}
std::string FormatDateTime(Person const& person)
{
// Convert the time to a human-readable format that is also easy
// to machine-parse: "CCYY-MM-DD hh:mm:ss".
time_t seconds = static_cast<time_t>(person.Time);
struct tm* t = gmtime(&seconds);
char dt[1024];
sprintf(dt, "%04d-%02d-%02d %02d:%02d:%02d",
t->tm_year+1900, t->tm_mon+1, t->tm_mday,
t->tm_hour, t->tm_min, t->tm_sec);
std::string out = dt;
// Add the time-zone field "+zone" or "-zone".
char tz[32];
if(person.TimeZone >= 0)
{
sprintf(tz, " +%04ld", person.TimeZone);
}
else
{
sprintf(tz, " -%04ld", -person.TimeZone);
}
out += tz;
return out;
}
};
char const cmCTestGIT::CommitParser::SectionSep[SectionCount] =
{'\n', '\n', '\0'};
//----------------------------------------------------------------------------
void cmCTestGIT::LoadRevisions()
{
// Use 'git rev-list ... | git diff-tree ...' to get revisions.
std::string range = this->OldRevision + ".." + this->NewRevision;
const char* git = this->CommandLineTool.c_str();
const char* git_rev_list[] =
{git, "rev-list", "--reverse", range.c_str(), "--", 0};
const char* git_diff_tree[] =
{git, "diff-tree", "--stdin", "--always", "-z", "-r", "--pretty=raw",
"--encoding=utf-8", 0};
this->Log << this->ComputeCommandLine(git_rev_list) << " | "
<< this->ComputeCommandLine(git_diff_tree) << "\n";
cmsysProcess* cp = cmsysProcess_New();
cmsysProcess_AddCommand(cp, git_rev_list);
cmsysProcess_AddCommand(cp, git_diff_tree);
cmsysProcess_SetWorkingDirectory(cp, this->SourceDirectory.c_str());
CommitParser out(this, "dt-out> ");
OutputLogger err(this->Log, "dt-err> ");
this->RunProcess(cp, &out, &err);
// Send one extra zero-byte to terminate the last record.
out.Process("", 1);
cmsysProcess_Delete(cp);
}
//----------------------------------------------------------------------------
void cmCTestGIT::LoadModifications()
{
const char* git = this->CommandLineTool.c_str();
// Use 'git update-index' to refresh the index w.r.t. the work tree.
const char* git_update_index[] = {git, "update-index", "--refresh", 0};
OutputLogger ui_out(this->Log, "ui-out> ");
OutputLogger ui_err(this->Log, "ui-err> ");
this->RunChild(git_update_index, &ui_out, &ui_err);
// Use 'git diff-index' to get modified files.
const char* git_diff_index[] = {git, "diff-index", "-z", "HEAD", "--", 0};
DiffParser out(this, "di-out> ");
OutputLogger err(this->Log, "di-err> ");
this->RunChild(git_diff_index, &out, &err);
for(std::vector<Change>::const_iterator ci = out.Changes.begin();
ci != out.Changes.end(); ++ci)
{
this->DoModification(PathModified, ci->Path);
}
}