helpmod2/htopic.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4
   5 #include "../lib/sstring.h"
   6
   7 #include "htopic.h"
   8
   9 htopic *htopic_add(htopic** htop, const char* entry, int pos)
  10 {
  11     htopic *tmp;
  12
  13     for (;*htop && pos;htop = &(*htop)->next, pos--);
  14
  15     tmp = *htop;
  16
  17     *htop = malloc(sizeof(htopic));
  18     (*htop)->entry = getsstring(entry, strlen(entry));
  19     (*htop)->next = tmp;
  20
  21     return *htop;
  22 }
  23
  24 htopic *htopic_del(htopic** htop, htopic* target)
  25 {
  26     htopic *tmp;
  27     for (;*htop;htop = &(*htop)->next)
  28         if (*htop == target)
  29             break;
  30     if (!*htop)
  31         return target;
  32     tmp = (*htop)->next;
  33     freesstring((*htop)->entry);
  34     free(*htop);
  35     *htop = tmp;
  36
  37
  38     return NULL;
  39 }
  40
  41 void htopic_del_all(htopic** htop)
  42 {
  43     while (*htop)
  44         htopic_del(htop, *htop);
  45 }
  46
  47 htopic *htopic_get(htopic *htop, int pos)
  48 {
  49     for (;htop && pos;htop = htop->next,pos--);
  50     return htop;
  51 }
  52
  53 const char *htopic_construct(htopic *htop)
  54 {
  55     static char buffer[512] = "";
  56
  57     *buffer = '\0';
  58
  59     for (;htop;htop = htop->next)
  60     {
  61         strcat(buffer, htop->entry->content);
  62         if (htop->next)
  63             strcat(buffer, " | ");
  64     }
  65     return buffer;
  66 }
  67
  68 int htopic_count(htopic *htop)
  69 {
  70     int count = 0;
  71     for (;htop;htop = htop->next)
  72         count++;
  73     return count;
  74 }
  75
  76 int htopic_len(htopic *htop)
  77 {
  78     int len = 0;
  79
  80     if (htopic_count(htop))
  81         len+=(htopic_count(htop) - 1) * 3;
  82     for (;htop;htop = htop->next)
  83         len+=strlen(htop->entry->content);
  84
  85     return len;
  86 }
  87