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tools.c
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tools.c
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#include "tools.h"
#include <vdr/sources.h>
/** ********** CompareBySourceName(const void *a, const void *b) ***************
***
*** assume params are pointers to int variable that represent sources
*** String compare source 'Description' / Name
*******************************************************************************/
int CompareBySourceName(const void *a, const void *b)
{
int src_a = *(int *)a;
int src_b = *(int *)b;
const char* src_a_name = "";
const char* src_b_name = "";
if (Sources.Get(src_a))
src_a_name = Sources.Get(src_a)->Description();
if (Sources.Get(src_b))
src_b_name = Sources.Get(src_b)->Description();
return strcmp(src_a_name, src_b_name);
}
/** *********************** cMySourceList **************************************
*** cMySourceList should hold list of sources, represented by numbers
*** (see cSource in vdr ), without any duplicates
*******************************************************************************/
cMySourceList::~cMySourceList ()
{
Clear();
}
int cMySourceList::Find(int code) const
{
for (int i=0; i< Size(); ++i)
{
if (At(i) == code)
return true;
} // for
return -1; // not found
}
void cMySourceList::Clear()
{
cVector<int>::Clear();
}
/** const char* BouquetName(int chanNumber) ************************************
*** Get bouquet name of a channel
********************************************************************************/
const char* ChannelInBouquet(const cChannel *channel, cChannels& Channels)
{
// if channel is bouquet name then it does not belong to any bouquet
// as it is not a "channel"
if (!channel || channel->GroupSep()) return NULL;
#if 0 // very slow for large channel lists
// for a channel list with 3632 lines with 76 bouquets,
// a bouquet search with partialmatch=true took ~12secs, where as the
// alternative is near instantaneous
int grpIdx = Channels.GetPrevGroup(channel->Index());
cChannel *groupCh = Channels.Get(grpIdx);
return groupCh ? groupCh->Name() : NULL;
#else
while (channel && !channel->GroupSep()) channel = Channels.Prev(channel);
return channel? channel->Name():NULL;
#endif
}
const cEvent* GetPresentEvent(const cChannel* channel)
{
const cEvent* event = NULL;
if (channel)
{
cSchedulesLock schedulesLock;
const cSchedules *schedules = cSchedules::Schedules(schedulesLock);
if (schedules)
{
const cSchedule* schedule = schedules->GetSchedule(channel->GetChannelID());
if (schedule)
event = schedule->GetPresentEvent();
} // if
} // if (bouquet)
return event;
}
char NumpadToChar(unsigned int k, unsigned int multiples)
{
static char numpad[][5] = {
" @+", //0
".?!", // 1
"abc", //2
"def", //3
"ghi", //4
"jkl", //5
"mno", //6
"pqrs", //7
"tuv", //8
"wxyz", //9
};
char ret = 0; // error, not found
if (k>9) return ret; // error, index over shoot
// maximum multiple for given number 'k', multiples start from 0...
int maxMultiple = strlen(numpad[k])-1;
#if 0
if (multiples > maxMultiple) return ret; // error, too many multiples
#else
multiples %= strlen(numpad[k]);
#endif
ret = numpad[k][multiples];
return ret;
}
char NumpadChar(eKeys Key)
{
#define NUMPAD_TIMEOUT 2000 //2 secs
static cTimeMs timeout(NUMPAD_TIMEOUT);
static int multiples = 0;
static int lastNum = -1;
int pressedNum = Key - k0;
if (timeout.TimedOut() || lastNum != pressedNum) {
multiples = 0;
lastNum = pressedNum;
}
else
++multiples;
timeout.Set(NUMPAD_TIMEOUT);
return NumpadToChar(pressedNum, multiples);
}
#ifndef REELVDR
// create a new string on the heap that has a maximum 'maxlen' number of
// characters (each can span multiple bytes)
//
// tries to find end of words to break the string
// returned char* (if not NULL) must be freed by caller
//
// bytesCopied used by the caller to jump in the input string
char* BreakString(const char*str, int maxlen, int &bytesCopied)
{
bytesCopied = 0;
if (!str) return NULL;
// number of chars
int symCount = Utf8StrLen(str);
// convert UTF-8 multi-byte char to a single uint number
uint *inp_sym = new uint[symCount+1]; // +1 for the '\0'
int inp_sym_len = Utf8ToArray(str, inp_sym, symCount+1);
// number of chars in the string less than the maxlen
// TODO: if there is a '\n' in this part!
if (inp_sym_len <= maxlen)
{
// copy the input string
bytesCopied = strlen(str);
delete[] inp_sym;
//printf("** just copied **\n");
return strdup(str);
}
// create string on heap that can hold maxlen (multi-byte)chars
char *s = (char*) malloc((4*maxlen+1)*sizeof(char)); //+1 for '\0'
int i = 0;
// if no wordbreaks found, break after maxlen characters
int line_end = maxlen;
// donot show the char that was used to break the string
// for eg. ' ' is unnecessary at the end/beginning of a line
int skip_symbol = 0;
//the string here is longer than requested. Break it down.
for (i = 0; i < maxlen; ++i)
{
//look for word breaks and new lines
if (inp_sym[i] == '\0' || inp_sym[i] == '\n')
{
line_end = i;
if (inp_sym[i] != '\0')
skip_symbol = 1;
break; // found end of line exit loop
}
else if (inp_sym[i] == ' ') //space
{
line_end = i;
skip_symbol = 1;
}
}//for
// create char from uint array, since the char* is large enough
// it will be '\0' terminated
bytesCopied = Utf8FromArray(inp_sym, s, 4*maxlen-1,line_end);
if (skip_symbol)// jump over the last symbol since it is a ' ' or '\n'
++bytesCopied;
delete[] inp_sym;
return s;
}
// breaks given text into smaller 'maxChar' length strings and
// displays them as unselectable text on OSD
void cUtils::AddFloatingText(cOsdMenu *m, const char* text, int maxChars)
{
// empty string; display nothing
if(!text) return;
char *p = NULL;
int copied = 0;
//printf("\tFloating Text (%i): '%s'\n", maxChars, text);
while(*text)
{
// returns a pointer to a char string with atmost maxChars characters (not bytes)
// p has to be freed; p is NULL if text was null
p = BreakString(text, maxChars, copied);
text += copied; //jump bytes not chars
if(p)
{
m->Add(new cOsdItem(p, osUnknown,false)); // unselectable text
free(p); p = NULL;
}
}
}
#endif /* REELVDR */