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Date: Tue, 01 Aug 2006 08:37:54 +0300
From: alex bodnaru <alexbodn AT 012 DOT net DOT il>
Subject: Re: files manipulation
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To: djgpp AT delorie DOT com
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one possible error: try fopen with "rt" mode, instead of "r".

alex

alex bodnaru wrote:
> hi,
> 
> you are doing right, just not showing all records.
> attached your own code, slightly retouched.
> 
> alex
> 
> ram DOT ragu AT gmail DOT com wrote:
> 
>>hi
>>  i can read the records. here the code is..
>>/*finding the difference btween times*/
>>#include <stdio.h>
>>#include<ctype.h>
>>#include<time.h>
>>main()
>>{
>>char buf[1000];
>>char dummy[50],dates[11],times[9];
>>int day,month,year,hour,minute,second,jobid;
>>FILE *ptr;
>>clrscr();;
>>ptr = fopen("read.txt","r");
>>while (feof(ptr) == 0)
>>    {
>>	fgets(buf, 1000, ptr);	/* Read next record			*/
>>	if(isdigit(buf[0]))
>>	{
>>	sscanf(buf,"%d %s %s %s %s %s
>>%s",&jobid,dummy,dummy,dummy,dummy,dates,times);
>>	printf("\n\n\n\n\n\n\n\n %d %s %s",jobid,dates,times);
>>	sscanf(dates,"%d/%d/%d",&month,&day,&year);
>>	printf("\n\n\n%d %d %d",month,day,year);
>>	sscanf(times,"%d:%d:%d",&hour,&minute,&second);
>>	printf("\n\n\n %d:%d:%d",hour,minute,second);
>>     	}
>>	/* printf("%s",buf);	 O/P the record to the screen		*/
>>     }
>> }
>>
>>
>>
>>
>>  in this code how can i go to the next records? here i can get only
>>one record.. then here i want to do time difference between two
>>records..
>>alex bodnaru wrote:
>>
>>
>>>hi ram,
>>>
>>>i would open the logfile in text read mode, and fgets each line in a
>>>buffer long enough.
>>>of the lines read, select the ones that contain your data, as i
>>>understand, those that begin with a number:
>>>if (isdigit(buf[0])) { ... }
>>>then scan the line data with sscanf:
>>>int jobid;
>>>char dummy[50], dates[11], times[9];
>>>sscanf(buf, "%d %s %s %s %s %s %s", &jobid, dummy, dummy, dummy, dummy,
>>>dates, times);
>>>please note, thay you may need to set the proper spacing between the
>>>fields in the format string.
>>>now, sscanf again, to get the time integer values:
>>>int day, month, year, hour, minute, second;
>>>sscanf(dates, "%d/%d/%d", &month, &day, &year);
>>>sscanf(times, "%d:%d:%d", &hour, &minute, &second);
>>>now get the system time and do your calculations.
>>>
>>>good luck,
>>>
>>>alex
>>>
>>>
>>>ram DOT ragu AT gmail DOT com wrote:
>>>
>>>
>>>>hi
>>>> i have problem which is simple but im struggling to solve it..below i
>>>>gave one sample of log file which is in text file format.the problem is
>>>>i have to get time in this logfile and deduct the time from system file
>>>>finally i have to bring the answer to standard output.. i got idea of
>>>>reading line from logfile and copy to stdout. but the problem is i
>>>>can't do manipulation(getting time difference) in textfile..some body
>>>>please help me out..
>>>>
>>>>
>>>>logfile:
>>>>---------
>>>>
>>>>jobid                                              time
>>>>------------------------------------------------------------
>>>>
>>>>181     0 ._11CH_CAS render       qw    07/23/2005 00:08:44
>>>>      112,113
>>>>      Full jobname:
>>>>._11CH_CAS1_q123s001_001_222_T2_ExtVeh02_SHD.ma
>>>>
>>>>
>>>>182     0 ._11CH_CAS render       qw    07/23/2005 00:17:43
>>>>      125-131:1
>>>>      Full jobname:
>>>>._11CH_CAS1_q123s001_001_222_T1_ExtVeh02_SHD.ma
>>>>183     0 ._11CH_CAS render       qw    07/23/2005 00:27:05
>>>>      125
>>>>       Full jobname:
>>>>._11CH_CAS1_q123s001_001_222_T2_ExtVeh02_SHD.ma
>>>>184     0 ._11CH_CAS render       qw    07/23/2005 01:33:07
>>>>      70-133:1
>>>>     Fulljobname:
>>>>._11CH_CAS1_q01s001_001_222_T3_EXTRA_VEHICALS_SHD.ma
>>>>
>>>>
>>>>185     0 ._11CH_CAS render       qw    07/23/2005 01:36:57
>>>>      70-133:1
>>>>      Full jobname:
>>>>._11CH_CAS1_q123s001_133_185_T3_ExtVeh03_SHD.ma
>>>>
>>>>
>>>>the output in stdout should be like this:
>>>>
>>>>
>>>>jobid         timedifference(this is diff between logfiletime and
>>>>systemtime)
>>>>-----------------------------------
>>>>181             1000 minutes
>>>>
>>>>
>>
>>
>>