lllogchat.cpp

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#include "llviewerprecompiledheaders.h"

#include "lllogchat.h"
#include "viewer.h"
        
const S32 LOG_RECALL_SIZE = 2048;

//static
LLString LLLogChat::makeLogFileName(LLString filename)
{
        filename = gDirUtilp->getExpandedFilename(LL_PATH_PER_ACCOUNT_CHAT_LOGS,filename.c_str());
        filename += ".txt";
        return filename;
}

LLString LLLogChat::timestamp(bool withdate)
{
        U32 utc_time;
        utc_time = time_corrected();

        // There's only one internal tm buffer.
        struct tm* timep;

        // Convert to Pacific, based on server's opinion of whether
        // it's daylight savings time there.
        timep = utc_to_pacific_time(utc_time, gPacificDaylightTime);

        LLString text;
        if (withdate)
                text = llformat("[%d/%02d/%02d %d:%02d]  ", (timep->tm_year-100)+2000, timep->tm_mon+1, timep->tm_mday, timep->tm_hour, timep->tm_min);
        else
                text = llformat("[%d:%02d]  ", timep->tm_hour, timep->tm_min);

        return text;
}


//static
void LLLogChat::saveHistory(LLString filename, LLString line)
{
        if(!filename.size())
        {
                llinfos << "Filename is Empty!" << llendl;
                return;
        }

        FILE* fp = LLFile::fopen(LLLogChat::makeLogFileName(filename).c_str(), "a");            /*Flawfinder: ignore*/
        if (!fp)
        {
                llinfos << "Couldn't open chat history log!" << llendl;
        }
        else
        {
                fprintf(fp, "%s\n", line.c_str());
                
                fclose (fp);
        }
}

void LLLogChat::loadHistory(LLString filename , void (*callback)(LLString,void*), void* userdata)
{
        if(!filename.size())
        {
                llerrs << "Filename is Empty!" << llendl;
        }

        FILE* fptr = LLFile::fopen(makeLogFileName(filename).c_str(), "r");             /*Flawfinder: ignore*/
        if (!fptr)
        {
                return;                 //No previous conversation with this name.
        }
        else
        {
                char buffer[LOG_RECALL_SIZE];           /*Flawfinder: ignore*/
                char *bptr;
                S32 len;
                bool firstline=TRUE;

                if ( fseek(fptr, (LOG_RECALL_SIZE - 1) * -1  , SEEK_END) )              
                {       //File is smaller than recall size.  Get it all.
                        firstline = FALSE;
                        if ( fseek(fptr, 0, SEEK_SET) )
                        {
                                fclose(fptr);
                                return;
                        }
                }

                while ( fgets(buffer, LOG_RECALL_SIZE, fptr)  && !feof(fptr) ) 
                {
                        len = strlen(buffer) - 1;               /*Flawfinder: ignore*/
                        for ( bptr = (buffer + len); (*bptr == '\n' || *bptr == '\r') && bptr>buffer; bptr--)   *bptr='\0';
                        
                        if (!firstline)
                        {
                                callback(buffer,userdata);
                        }
                        else
                        {
                                firstline = FALSE;
                        }
                }
                callback("-- End of Log ---",userdata);
                
                fclose(fptr);
        }
}

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