[Suttix]

Is there a way to read a log file backwards because i've been looking for solution but nothing found.
Can someone help me with that.Thanks

[Suttix]

Anyone?

[TokicMajstor]

If you know exact amount of characters in that (string) you can extract one by one character starting from last one, using strcat

[Suttix]

Jok buraz,need better solution.

[introzen]

Found this snippet by using the search function. Don't know if it's what you're looking for though.

pawn Code:

Function:Reverse(string[])
{
         // Setting vars
    new string1[256];
               lengthOfString = strlen(string);

        // Processing 
    for(new i = 0; i < strlen(string); i++)
    {
        string1[i] = string[(lengthOfString-i)];
    }

        // Returning processed string
    return string1;
}

[Logic_]

You can try experimenting with something like:

PHP Code:

// Open "file.txt" in "read only" mode
new File:handle = fopen("file.txt", io_read);
 
// If "file.txt" is open
if(handle) {
    // Jump to the last byte of "file.txt", and print its position
    printf("End of file position: %d", fseek(handle, 0, seek_end));
    fclose(handle);
} 


( Taken from SA-MP wiki https://sampwiki.blast.hk/wiki/Fseek )

[Suttix]

Quote:

Originally Posted by Logic_ You can try experimenting with something like: PHP Code: // Open "file.txt" in "read only" mode new File:handle = fopen("file.txt", io_read);   // If "file.txt" is open if(handle) {     // Jump to the last byte of "file.txt", and print its position     printf("End of file position: %d", fseek(handle, 0, seek_end));     fclose(handle); }  ( Taken from SA-MP wiki https://sampwiki.blast.hk/wiki/Fseek )

I don't know if I could use this for my log file because i need something like:

Code:

while(fread(handle, data))

but read it upwards(last 30 lines).

This is my current load function that loads file string normally from begining

PHP Code:

function givendmg_load(playerid){
    new f[64]; format(f, 64, givendmg_file, GetName(playerid));
    new Data[256], x=0, arrCoords[6][64];
    new File:handle = fopen(f, io_read);
    
    if(!fexist(f)) return printf("File %s ne postoji te se sistem nije ucitao", f);
    
    while(fread(handle, Data)){
        split(Data, arrCoords, ',');
        strmid(givendmgInfo[playerid][x][dmgDate], arrCoords[0], 0, strlen(arrCoords[0]));
        strmid(givendmgInfo[playerid][x][dmgTime], arrCoords[1], 0, strlen(arrCoords[1]));
        strmid(givendmgInfo[playerid][x][dmgGivenTo], arrCoords[2], 0, strlen(arrCoords[2]));
        strmid(givendmgInfo[playerid][x][dmgGivenBy], arrCoords[3], 0, strlen(arrCoords[3]));
        givendmgInfo[playerid][x][dmgAmount] = strval(arrCoords[4]);
        givendmgInfo[playerid][x][dmgWeapon] = strval(arrCoords[5]);
        x++;
    }
    fclose(handle);
    return 1;
} 


Can anyone give me an example how to reverse fread()

[Suttix]

Quote:

Originally Posted by Y_Less There is no good method. You could try fseek to get to the end. Also, English only here please (in your post at least, not code snippets).

Ok,sure.

[NaS]

https://forum.sa-mp.com/showpost.php...82&postcount=8

This should be what you are looking for. It doesn't actually read the file backwards, but it creates a copy with reversed line order which you can open afterwards and use regular file functions.

You must define MAX_LINE_LENGTH to what you guess will be the max. line length. Unfortunately it buffers each line so that is required to know.

[Suttix]

Quote:

Originally Posted by NaS https://forum.sa-mp.com/showpost.php...82&postcount=8 This should be what you are looking for. It doesn't actually read the file backwards, but it creates a copy with reversed line order which you can open afterwards and use regular file functions. You must define MAX_LINE_LENGTH to what you guess will be the max. line length. Unfortunately it buffers each line so that is required to know.

I came across on this function but i didn't know how could I use it.
I'll try it next time,thanks.