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CMake/Source/CTest/cmCTestGIT.cxx

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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmCTestGIT.h"
#include "cmAlgorithms.h"
#include "cmCTest.h"
#include "cmCTestVC.h"
#include "cmProcessTools.h"
#include "cmSystemTools.h"
#include <cmsys/FStream.hxx>
#include <cmsys/Process.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <vector>
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;
bool ProcessLine() CM_OVERRIDE
{
// 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", "--", CM_NULLPTR };
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", CM_NULLPTR };
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",
CM_NULLPTR };
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(CM_NULLPTR);
// 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(),
CM_NULLPTR };
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(CM_NULLPTR);
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";
const char* sync_recursive = "--recursive";
// Git < 1.6.5 did not support submodule --recursive
if (this->GetGitVersion() < cmCTestGITVersion(1, 6, 5, 0)) {
recursive = CM_NULLPTR;
// No need to require >= 1.6.5 if there are no submodules.
if (cmSystemTools::FileExists((top_dir + "/.gitmodules").c_str())) {
this->Log << "Git < 1.6.5 cannot update submodules recursively\n";
}
}
// Git < 1.8.1 did not support sync --recursive
if (this->GetGitVersion() < cmCTestGITVersion(1, 8, 1, 0)) {
sync_recursive = CM_NULLPTR;
// No need to require >= 1.8.1 if there are no submodules.
if (cmSystemTools::FileExists((top_dir + "/.gitmodules").c_str())) {
this->Log << "Git < 1.8.1 cannot synchronize submodules recursively\n";
}
}
OutputLogger submodule_out(this->Log, "submodule-out> ");
OutputLogger submodule_err(this->Log, "submodule-err> ");
bool ret;
std::string init_submodules =
this->CTest->GetCTestConfiguration("GITInitSubmodules");
if (cmSystemTools::IsOn(init_submodules.c_str())) {
char const* git_submodule_init[] = { git, "submodule", "init",
CM_NULLPTR };
ret = this->RunChild(git_submodule_init, &submodule_out, &submodule_err,
top_dir.c_str());
if (!ret) {
return false;
}
}
char const* git_submodule_sync[] = { git, "submodule", "sync",
sync_recursive, CM_NULLPTR };
ret = this->RunChild(git_submodule_sync, &submodule_out, &submodule_err,
top_dir.c_str());
if (!ret) {
return false;
}
char const* git_submodule[] = { git, "submodule", "update", recursive,
CM_NULLPTR };
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", CM_NULLPTR };
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();
}
bool ProcessLine() CM_OVERRIDE
{
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'.
*/
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);
}
bool ProcessLine() CM_OVERRIDE
{
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.
if (cmHasLiteralPrefix(this->Line.c_str(), "commit ")) {
this->Rev.Rev = this->Line.c_str() + 7;
} 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);
} 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(), "--", CM_NULLPTR };
const char* git_diff_tree[] = {
git, "diff-tree", "--stdin", "--always", "-z",
"-r", "--pretty=raw", "--encoding=utf-8", CM_NULLPTR
};
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",
CM_NULLPTR };
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", "--", CM_NULLPTR };
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);
}
}
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