// Read the history from a single file and print it out.
static void readHistoryFromFile(char *JobHistoryFileName, char* constraint, ExprTree *constraintExpr)
{
int EndFlag = 0;
int ErrorFlag = 0;
int EmptyFlag = 0;
AttrList *ad = NULL;
long offset = 0;
bool BOF = false; // Beginning Of File
MyString buf;
FILE* LogFile=safe_fopen_wrapper(JobHistoryFileName,"r");
if (!LogFile) {
fprintf(stderr,"History file (%s) not found or empty.\n", JobHistoryFileName);
exit(1);
}
// In case of rotated history files, check if we have already reached the number of
// matches specified by the user before reading the next file
if (specifiedMatch != 0) {
if (matchCount == specifiedMatch) { // Already found n number of matches, cleanup
fclose(LogFile);
return;
}
}
if (backwards) {
offset = findLastDelimiter(LogFile, JobHistoryFileName);
}
while(!EndFlag) {
if (backwards) { // Read history file backwards
if (BOF) { // If reached beginning of file
break;
}
offset = findPrevDelimiter(LogFile, JobHistoryFileName, offset);
if (offset == -1) { // Unable to match constraint
break;
} else if (offset != 0) {
fseek(LogFile, offset, SEEK_SET);
buf.readLine(LogFile); // Read one line to skip delimiter and adjust to actual offset of ad
} else { // Offset set to 0
BOF = true;
fseek(LogFile, offset, SEEK_SET);
}
}
if( !( ad=new AttrList(LogFile,"***", EndFlag, ErrorFlag, EmptyFlag) ) ){
fprintf( stderr, "Error: Out of memory\n" );
exit( 1 );
}
if( ErrorFlag ) {
printf( "\t*** Warning: Bad history file; skipping malformed ad(s)\n" );
ErrorFlag=0;
if(ad) {
delete ad;
ad = NULL;
}
continue;
}
if( EmptyFlag ) {
EmptyFlag=0;
if(ad) {
delete ad;
ad = NULL;
}
continue;
}
if (!constraint || EvalBool(ad, constraintExpr)) {
if (longformat) {
ad->fPrint(stdout); printf("\n");
} else {
if (customFormat) {
mask.display(stdout, ad);
} else {
displayJobShort(ad);
}
}
matchCount++; // if control reached here, match has occured
if (specifiedMatch != 0) { // User specified a match number
if (matchCount == specifiedMatch) { // Found n number of matches, cleanup
if (ad) {
delete ad;
ad = NULL;
}
fclose(LogFile);
return;
}
}
}
if(ad) {
delete ad;
ad = NULL;
}
}
fclose(LogFile);
return;
}
// Read the history from a single file and print it out.
static void readHistoryFromFileOld(const char *JobHistoryFileName, const char* constraint, ExprTree *constraintExpr)
{
int EndFlag = 0;
int ErrorFlag = 0;
int EmptyFlag = 0;
ClassAd *ad = NULL;
long offset = 0;
bool BOF = false; // Beginning Of File
MyString buf;
int flags = 0;
if( !backwards ) {
// Currently, the file position manipulations used in -backwards
// do not work with files > 2GB on platforms with 32-bit file
// offsets.
flags = O_LARGEFILE;
}
int LogFd = safe_open_wrapper_follow(JobHistoryFileName,flags,0);
if (LogFd < 0) {
fprintf(stderr,"Error opening history file %s: %s\n", JobHistoryFileName,strerror(errno));
#ifdef EFBIG
if( (errno == EFBIG) && backwards ) {
fprintf(stderr,"The -backwards option does not support files this large.\n");
}
#endif
exit(1);
}
FILE *LogFile = fdopen(LogFd,"r");
if (!LogFile) {
fprintf(stderr,"Error opening history file %s: %s\n", JobHistoryFileName,strerror(errno));
exit(1);
}
// In case of rotated history files, check if we have already reached the number of
// matches specified by the user before reading the next file
if (specifiedMatch != 0) {
if (matchCount == specifiedMatch) { // Already found n number of matches, cleanup
fclose(LogFile);
return;
}
}
if (backwards) {
offset = findLastDelimiter(LogFile, JobHistoryFileName);
}
if(longformat && use_xml) {
std::string out;
AddClassAdXMLFileHeader(out);
printf("%s\n", out.c_str());
}
while(!EndFlag) {
if (backwards) { // Read history file backwards
if (BOF) { // If reached beginning of file
break;
}
offset = findPrevDelimiter(LogFile, JobHistoryFileName, offset);
if (offset == -1) { // Unable to match constraint
break;
} else if (offset != 0) {
fseek(LogFile, offset, SEEK_SET);
buf.readLine(LogFile); // Read one line to skip delimiter and adjust to actual offset of ad
} else { // Offset set to 0
BOF = true;
fseek(LogFile, offset, SEEK_SET);
}
}
if( !( ad=new ClassAd(LogFile,"***", EndFlag, ErrorFlag, EmptyFlag) ) ){
fprintf( stderr, "Error: Out of memory\n" );
exit( 1 );
}
if( ErrorFlag ) {
printf( "\t*** Warning: Bad history file; skipping malformed ad(s)\n" );
ErrorFlag=0;
if(ad) {
delete ad;
ad = NULL;
}
continue;
}
if( EmptyFlag ) {
EmptyFlag=0;
if(ad) {
delete ad;
ad = NULL;
}
continue;
}
if (!constraint || constraint[0]=='\0' || EvalBool(ad, constraintExpr)) {
if (longformat) {
if( use_xml ) {
fPrintAdAsXML(stdout, *ad);
}
else {
fPrintAd(stdout, *ad);
}
printf("\n");
} else {
if (customFormat) {
mask.display(stdout, ad);
} else {
displayJobShort(ad);
}
}
matchCount++; // if control reached here, match has occured
if (specifiedMatch != 0) { // User specified a match number
if (matchCount == specifiedMatch) { // Found n number of matches, cleanup
if (ad) {
delete ad;
ad = NULL;
}
fclose(LogFile);
return;
}
}
}
if(ad) {
delete ad;
ad = NULL;
}
}
if(longformat && use_xml) {
std::string out;
AddClassAdXMLFileFooter(out);
printf("%s\n", out.c_str());
}
fclose(LogFile);
return;
}