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

   1 /*
   2     +--------------------------------------------------------------------+
   3     | PECL :: http                                                       |
   4     +--------------------------------------------------------------------+
   5     | Redistribution and use in source and binary forms, with or without |
   6     | modification, are permitted provided that the conditions mentioned |
   7     | in the accompanying LICENSE file are met.                          |
   8     +--------------------------------------------------------------------+
   9     | Copyright (c) 2004-2011, Michael Wallner <mike@php.net>            |
  10     +--------------------------------------------------------------------+
  11 */
  12
  13 #include "php_http.h"
  14
  15 PHP_HTTP_API php_http_strlist_iterator_t *php_http_strlist_iterator_init(php_http_strlist_iterator_t *iter, const char list[], unsigned factor)
  16 {
  17         if (!iter) {
  18                 iter = emalloc(sizeof(*iter));
  19         }
  20         memset(iter, 0, sizeof(*iter));
  21
  22         iter->p = &list[0];
  23         iter->factor = factor;
  24
  25         return iter;
  26 }
  27
  28 PHP_HTTP_API const char *php_http_strlist_iterator_this(php_http_strlist_iterator_t *iter, unsigned *id)
  29 {
  30         if (id) {
  31                 *id = iter->major * iter->factor + iter->minor;
  32         }
  33
  34         return iter->p;
  35 }
  36
  37 PHP_HTTP_API const char *php_http_strlist_iterator_next(php_http_strlist_iterator_t *iter)
  38 {
  39         if (*iter->p) {
  40                 while (*iter->p) {
  41                         ++iter->p;
  42                 }
  43                 ++iter->p;
  44                 ++iter->minor;
  45
  46                 if (!*iter->p) {
  47                         ++iter->p;
  48                         ++iter->major;
  49                 }
  50         }
  51
  52     return iter->p;
  53 }
  54
  55 PHP_HTTP_API void php_http_strlist_iterator_dtor(php_http_strlist_iterator_t *iter)
  56 {
  57
  58 }
  59
  60 PHP_HTTP_API void php_http_strlist_iterator_free(php_http_strlist_iterator_t **iter)
  61 {
  62         if (*iter) {
  63                 efree(*iter);
  64                 *iter = NULL;
  65         }
  66 }
  67
  68 PHP_HTTP_API const char *php_http_strlist_find(const char list[], unsigned factor, unsigned item)
  69 {
  70         unsigned M = 0, m = 0, major, minor;
  71         const char *p = &list[0];
  72
  73         if (factor) {
  74                 major = (item / factor) - 1;
  75                 minor = item % factor;
  76         } else {
  77                 major = 0;
  78                 minor = item;
  79         }
  80     while (*p && major != M++) {
  81         while (*p) {
  82             while (*p) {
  83                 ++p;
  84             }
  85             ++p;
  86         }
  87         ++p;
  88     }
  89
  90     while (*p && minor != m++) {
  91         while (*p) {
  92             ++p;
  93         }
  94         ++p;
  95     }
  96
  97     return p;
  98 }
  99
 100 /*
 101  * Local variables:
 102  * tab-width: 4
 103  * c-basic-offset: 4
 104  * End:
 105  * vim600: noet sw=4 ts=4 fdm=marker
 106  * vim<600: noet sw=4 ts=4
 107  */
 108