complete.c

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#include "config.h"
#include <stdbool.h>
#include <stdio.h>
#include "mutt/lib.h"
#include "lib.h"
#include "adata.h"
#include "mdata.h"
 
int nntp_complete(struct Buffer *buf)
{
  struct NntpAccountData *adata = CurrentNewsSrv;
  size_t n = 0;
  struct Buffer *filepart = buf_new(buf_string(buf));
  bool init = false;
 
  /* special case to handle when there is no filepart yet
   * find the first subscribed newsgroup */
  int len = buf_len(filepart);
  if (len == 0)
  {
    for (; n < adata->groups_num; n++)
    {
      struct NntpMboxData *mdata = adata->groups_list[n];
 
      if (mdata && mdata->subscribed)
      {
        buf_strcpy(filepart, mdata->group);
        init = true;
        n++;
        break;
      }
    }
  }
 
  for (; n < adata->groups_num; n++)
  {
    struct NntpMboxData *mdata = adata->groups_list[n];
 
    if (mdata && mdata->subscribed &&
        mutt_strn_equal(mdata->group, buf_string(filepart), len))
    {
      if (init)
      {
        char *str = filepart->data;
        size_t i;
        for (i = 0; (str[i] != '\0') && mdata->group[i]; i++)
        {
          if (str[i] != mdata->group[i])
            break;
        }
        str[i] = '\0';
        buf_fix_dptr(filepart);
      }
      else
      {
        buf_strcpy(filepart, mdata->group);
        init = true;
      }
    }
  }
 
  buf_copy(buf, filepart);
  buf_free(&filepart);
  return init ? 0 : -1;
}