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/***************************************************************************
list.i - Adds list support to ini files
-------------------
begin : Fri Apr 21 2000
copyright : (C) 2000 by Simon White
email : s_a_white@email.com
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include <stdlib.h>
#include <string.h>
#include "list.h"
#ifdef INI_ADD_LIST_SUPPORT
/********************************************************************************************************************
* Function : ini_listEval
* Parameters : ini - pointer to ini file database.
* Returns : -1 for Error or the numbers of list items found
* Globals Used :
* Globals Modified :
* Description : Uses the currently specified delimiters to calculate the number of eliments in a list
********************************************************************************************************************
* Rev | Date | By | Comment
* ----------------------------------------------------------------------------------------------------------------
********************************************************************************************************************/
int __ini_listEval (ini_t *ini)
{
int length, count, i, ret;
int ldelim;
char ch;
// Remove old list
if (ini->list)
{
free (ini->list);
ini->list = '\0';
}
// Re-evaluate with new settings
length = ini->selected->selected->length;
if (length < 0)
return -1;
if (!length)
{
ini->listIndex = '\0';
ini->listLength = 0;
if (ini->selected->selected == &ini->tmpKey)
return -1; // Can't read tmpKey
return 0;
}
// See if there are any chars which can be used to split the string into sub ones
if (!ini->listDelims)
return -1;
ldelim = (int) strlen (ini->listDelims);
// Buffer string for faster access
ini->list = (char *) malloc (length + 1);
if (!ini->list)
return -1;
{ // Backup up delims to avoid causing problems with readString
char *delims = ini->listDelims;
ini->listDelims = NULL;
ret = ini_readString ((ini_fd_t) ini, ini->list, length + 1);
ini->listDelims = delims;
if (ret < 0)
return -1;
}
// Process buffer string to find number of sub strings
{
char lastch = '\0';
count = 1;
while (length)
{
length--;
ch = ini->list[length];
for (i = 0; i < ldelim; i++)
{
if ((char) ch == ini->listDelims[i])
{ // Prevent lots of NULL strings on multiple
// whitespace
if (lastch == '\0')
{
if (isspace (ch))
{
ch = '\0';
break;
}
}
// Seperate strings
ini->list[length] = (ch = '\0');
count++;
break;
}
}
lastch = ch;
}
}
ini->listLength = count;
ini->listIndexPtr = ini->list;
ini->listIndex = 0;
return count;
}
/********************************************************************************************************************
* Function : __ini_listRead
* Parameters : ini - pointer to ini file database.
* Returns : NULL for error, string point otherwise
* Globals Used :
* Globals Modified :
* Description : Reads the indexed parameter from the list and auto
* : increments
********************************************************************************************************************
* Rev | Date | By | Comment
* ----------------------------------------------------------------------------------------------------------------
********************************************************************************************************************/
char *__ini_listRead (ini_t *ini)
{
char *p;
// we must read an element from the list
// Rev 1.2 Changed order of these two ifs as test was performed
// sometimes before anything was read
if (!ini->list)
{
if (__ini_listEval (ini) < 0)
return 0;
}
// Check to see if we are trying to get a value beyond the end of the list
if (ini->listIndex >= ini->listLength)
return 0;
p = ini->listIndexPtr;
// Auto increment pointers to next index
ini->listIndexPtr += (strlen (ini->listIndexPtr) + 1);
ini->listIndex++;
return p;
}
/********************************************************************************************************************
* Function : ini_listLength
* Parameters : ini - pointer to ini file database. heading - heading name. key - key name.
* Returns : -1 for Error or the numbers of list items found
* Globals Used :
* Globals Modified :
* Description : Uses the currently specified delimiters to calculate the number of eliments in a list
********************************************************************************************************************
* Rev | Date | By | Comment
* ----------------------------------------------------------------------------------------------------------------
********************************************************************************************************************/
int INI_LINKAGE ini_listLength (ini_fd_t fd)
{
ini_t *ini = (ini_t *) fd;
struct key_tag *_key;
// Check to make sure a section/key has
// been asked for by the user
if (!ini->selected)
return -1;
_key = ini->selected->selected;
if (!_key)
return -1;
// Check to see if we have moved to a new key
if (!ini->list)
return __ini_listEval (ini);
return ini->listLength;
}
/********************************************************************************************************************
* Function : ini_listDelims
* Parameters : ini - pointer to ini file database. delims - string of delimitor chars
* Returns : -1 for Error or 0 for success
* Globals Used :
* Globals Modified :
* Description : Sets the delimiters used for list accessing, (default delim is NULL)
********************************************************************************************************************
* Rev | Date | By | Comment
* ----------------------------------------------------------------------------------------------------------------
********************************************************************************************************************/
int INI_LINKAGE ini_listDelims (ini_fd_t fd, char *delims)
{
ini_t *ini = (ini_t *) fd;
if (ini->listDelims)
free (ini->listDelims);
ini->listDelims = NULL;
// Make sure we have something to copy
if (delims)
{
if (*delims)
{ // Store delims for later use
ini->listDelims = (char *) malloc (strlen (delims) + 1);
if (!ini->listDelims)
return -1;
strcpy (ini->listDelims, delims);
}
}
// List will need recalculating at some point
if (ini->list)
{
free (ini->list);
ini->list = NULL;
}
return 0;
}
/********************************************************************************************************************
* Function : ini_listIndex
* Parameters : ini - pointer to ini file database. delims - string of delimitor chars
* Returns :
* Globals Used :
* Globals Modified :
* Description : Sets the index that the next call to any of the read function will obtain (default 0)
********************************************************************************************************************
* Rev | Date | By | Comment
* ----------------------------------------------------------------------------------------------------------------
********************************************************************************************************************/
int INI_LINKAGE ini_listIndex (ini_fd_t fd, unsigned long index)
{
ini_t *ini = (ini_t *) fd;
unsigned int count;
char *p;
// Check to make sure a section/key has
// been asked for by the user
if (!ini->selected)
return -1;
if (!ini->selected->selected)
return -1;
// Pull in new list
if (!ini->list)
{
if (__ini_listEval (ini) < 0)
return -1;
}
// Now scroll through to required index
if (!ini->listLength)
return -1;
if (index == ini->listIndex)
return 0;
if (index > ini->listIndex)
{ // Continue search from the from current position
count = ini->listIndex;
p = ini->listIndexPtr;
}
else
{ // Reset list and search from beginning
count = 0;
p = ini->list;
}
while (count != index)
{
count++;
if (count >= ini->listLength)
return -1;
// Jump to next sub string
p += (strlen (p) + 1);
}
ini->listIndex = count;
ini->listIndexPtr = p;
return 0;
}
/********************************************************************************************************************
* Function : __ini_listIndexLength
* Parameters : ini - pointer to ini file database
* Returns :
* Globals Used :
* Globals Modified :
* Description : Returns the length the indexed sub string
********************************************************************************************************************
* Rev | Date | By | Comment
* ----------------------------------------------------------------------------------------------------------------
********************************************************************************************************************/
int __ini_listIndexLength (ini_t *ini)
{
if (!ini->list)
{ // No list yet. So try to get one
if (__ini_listEval (ini) < 0)
return -1;
}
// Now return length
return strlen (ini->listIndexPtr);
}
#endif // INI_ADD_LIST_SUPPORT
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