git.m6w6.name Git - m6w6/ext-http/blob - php_http_strlist.c

   1
   2 #include "php_http.h"
   3
   4 PHP_HTTP_API php_http_strlist_iterator_t *php_http_strlist_iterator_init(php_http_strlist_iterator_t *iter, const char list[], unsigned factor)
   5 {
   6         if (!iter) {
   7                 iter = emalloc(sizeof(*iter));
   8         }
   9         memset(iter, 0, sizeof(*iter));
  10
  11         iter->p = &list[0];
  12         iter->factor = factor;
  13
  14         return iter;
  15 }
  16
  17 PHP_HTTP_API const char *php_http_strlist_iterator_this(php_http_strlist_iterator_t *iter, unsigned *id)
  18 {
  19         if (id) {
  20                 *id = iter->major * iter->factor + iter->minor;
  21         }
  22
  23         return iter->p;
  24 }
  25
  26 PHP_HTTP_API const char *php_http_strlist_iterator_next(php_http_strlist_iterator_t *iter)
  27 {
  28         if (*iter->p) {
  29                 while (*iter->p) {
  30                         ++iter->p;
  31                 }
  32                 ++iter->p;
  33                 ++iter->minor;
  34
  35                 if (!*iter->p) {
  36                         ++iter->p;
  37                         ++iter->major;
  38                 }
  39         }
  40
  41     return iter->p;
  42 }
  43
  44 PHP_HTTP_API void php_http_strlist_iterator_dtor(php_http_strlist_iterator_t *iter)
  45 {
  46
  47 }
  48
  49 PHP_HTTP_API void php_http_strlist_iterator_free(php_http_strlist_iterator_t **iter)
  50 {
  51         if (*iter) {
  52                 efree(*iter);
  53                 *iter = NULL;
  54         }
  55 }
  56
  57 PHP_HTTP_API const char *php_http_strlist_find(const char list[], unsigned factor, unsigned item)
  58 {
  59         unsigned M = 0, m = 0, major, minor;
  60         const char *p = &list[0];
  61
  62         if (factor) {
  63                 major = (item / factor) - 1;
  64                 minor = item % factor;
  65         } else {
  66                 major = 0;
  67                 minor = item;
  68         }
  69     while (*p && major != M++) {
  70         while (*p) {
  71             while (*p) {
  72                 ++p;
  73             }
  74             ++p;
  75         }
  76         ++p;
  77     }
  78
  79     while (*p && minor != m++) {
  80         while (*p) {
  81             ++p;
  82         }
  83         ++p;
  84     }
  85
  86     return p;
  87 }