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/*
Copyright (C) 2010 Andrew Caudwell (acaudwell@gmail.com)
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version
3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "svn.h"
Regex svn_xml_tag("^<\\??xml");
Regex svn_logentry_start("^<logentry");
Regex svn_logentry_end("^</logentry>");
Regex svn_logentry_timestamp("(\\d{4})-(\\d{2})-(\\d{2})T(\\d{2}):(\\d{2}):(\\d{2})");
std::string gGourceSVNLogCommand = "svn log -r 1:HEAD --xml --verbose --quiet";
SVNCommitLog::SVNCommitLog(const std::string& logfile) : RCommitLog(logfile, '<') {
log_command = gGourceSVNLogCommand;
//can generate log from directory
if(!logf && is_dir) {
logf = generateLog(logfile);
if(logf) {
success = true;
seekable = true;
}
}
logentry.reserve(1024);
}
BaseLog* SVNCommitLog::generateLog(const std::string& dir) {
//get working directory
char cwd_buff[1024];
if(getcwd(cwd_buff, 1024) != cwd_buff) {
return 0;
}
//does directory have a .svn ?
std::string gitdir = dir + std::string("/.svn");
struct stat dirinfo;
int stat_rc = stat(gitdir.c_str(), &dirinfo);
if(stat_rc!=0 || !(dirinfo.st_mode & S_IFDIR)) {
return 0;
}
// do we have this client installed
requireExecutable("svn");
std::string command = getLogCommand();
//create temp file
createTempLog();
if(temp_file.size()==0) return 0;
if(chdir(dir.c_str()) != 0) {
return 0;
}
char cmd_buff[2048];
sprintf(cmd_buff, "%s > %s", command.c_str(), temp_file.c_str());
int command_rc = systemCommand(cmd_buff);
chdir(cwd_buff);
if(command_rc != 0) {
return 0;
}
BaseLog* seeklog = new SeekLog(temp_file);
return seeklog;
}
#ifndef HAVE_TIMEGM
std::string system_tz;
bool system_tz_init = false;
time_t __timegm_hack(struct tm* tm) {
if(!system_tz_init) {
char* current_tz_env = getenv("TZ");
if(current_tz_env != 0) {
system_tz = std::string("TZ=") + current_tz_env;
}
system_tz_init = true;
}
putenv((char*)"TZ=UTC");
tzset();
time_t timestamp = mktime(tm);
if(!system_tz.empty()) {
putenv((char*)system_tz.c_str());
} else {
#ifdef HAVE_UNSETENV
unsetenv("TZ");
#else
putenv((char*)"TZ=");
#endif
}
tzset();
return timestamp;
}
#endif
bool SVNCommitLog::parseCommit(RCommit& commit) {
//fprintf(stderr,"parsing svn log\n");
std::string line;
if(!getNextLine(line)) return false;
//start of log entry
if(!svn_logentry_start.match(line)) {
//is this the start of the document
if(!svn_xml_tag.match(line)) return false;
//fprintf(stderr,"found xml tag\n");
//if so find the first logentry tag
bool found_logentry = false;
while(getNextLine(line)) {
if(svn_logentry_start.match(line)) {
found_logentry = true;
break;
}
}
if(!found_logentry) return false;
}
//fprintf(stderr,"found logentry\n");
logentry.clear();
logentry.append(line);
logentry.append("\n");
//fprintf(stderr,"found opening tag\n");
bool endfound = false;
while(getNextLine(line)) {
logentry.append(line);
logentry.append("\n");
if(svn_logentry_end.match(line)) {
//fprintf(stderr,"found closing tag\n");
endfound=true;
break;
}
}
//incomplete commit
if(!endfound) return false;
//fprintf(stderr,"read logentry\n");
TiXmlDocument doc;
if(!doc.Parse(logentry.c_str())) return false;
//fprintf(stderr,"try to parse logentry: %s\n", logentry.c_str());
TiXmlElement* leE = doc.FirstChildElement( "logentry" );
std::vector<std::string> entries;
if(!leE) return false;
//parse date
TiXmlElement* dateE = leE->FirstChildElement( "date" );
if(!dateE) return false;
std::string timestamp_str(dateE->GetText());
if(!svn_logentry_timestamp.match(timestamp_str, &entries))
return false;
struct tm time_str;
time_str.tm_year = atoi(entries[0].c_str()) - 1900;
time_str.tm_mon = atoi(entries[1].c_str()) - 1;
time_str.tm_mday = atoi(entries[2].c_str());
time_str.tm_hour = atoi(entries[3].c_str());
time_str.tm_min = atoi(entries[4].c_str());
time_str.tm_sec = atoi(entries[5].c_str());
time_str.tm_isdst = -1;
#ifdef HAVE_TIMEGM
commit.timestamp = timegm(&time_str);
#else
commit.timestamp = __timegm_hack(&time_str);
#endif
//parse author
TiXmlElement* authorE = leE->FirstChildElement("author");
if(authorE != 0) {
std::string author(authorE->GetText());
if(author.empty()) author = "Unknown";
commit.username = author;
}
TiXmlElement* pathsE = leE->FirstChildElement( "paths" );
//log entries sometimes dont have any paths
if(!pathsE) return true;
//parse changes
for(TiXmlElement* pathE = pathsE->FirstChildElement("path"); pathE != 0; pathE = pathE->NextSiblingElement()) {
//parse path
const char* kind = pathE->Attribute("kind");
const char* action = pathE->Attribute("action");
//check for action
if(action == 0) continue;
bool is_dir = false;
//if has the 'kind' attribute (old versions of svn dont have this), check if it is a dir
if(kind != 0 && strcmp(kind,"dir") == 0) {
//accept only deletes for directories
if(strcmp(action, "D") != 0) continue;
is_dir = true;
}
std::string file(pathE->GetText());
std::string status(action);
if(file.empty()) continue;
if(status.empty()) continue;
//append trailing slash if is directory
if(is_dir && file[file.size()-1] != '/') {
file = file + std::string("/");
}
commit.addFile(file, status);
}
//fprintf(stderr,"parsed logentry\n");
//read files
return true;
}
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