postlicyd/filter.c

   1 /******************************************************************************/
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  30 /******************************************************************************/
  31
  32 /*
  33  * Copyright © 2008 Florent Bruneau
  34  */
  35
  36 #include "str.h"
  37 #include "buffer.h"
  38 #include "filter.h"
  39
  40 static filter_runner_t      runners[FTK_count];
  41 static filter_constructor_t constructors[FTK_count];
  42 static filter_destructor_t  destructors[FTK_count];
  43
  44 void filter_register(const char *type, filter_constructor_t constructor,
  45                      filter_destructor_t destructor, filter_runner_t runner)
  46 {
  47     filter_token tok = filter_tokenize(type, m_strlen(type));
  48     assert(tok != FTK_UNKNOWN && "Unknown filter type");
  49     runners[tok] = runner;
  50     constructors[tok] = constructor;
  51     destructors[tok] = destructor;
  52 }
  53
  54 bool filter_build(filter_t *filter)
  55 {
  56     if (filter->type == FTK_UNKNOWN || filter->name == NULL) {
  57         return false;
  58     }
  59     filter_constructor_t constructor = constructors[filter->type];
  60     if (constructor) {
  61         return constructor(filter);
  62     }
  63     return true;
  64 }
  65
  66 void filter_wipe(filter_t *filter)
  67 {
  68     filter_destructor_t destructor = destructors[filter->type];
  69     if (destructor) {
  70         destructor(filter);
  71     }
  72     array_deep_wipe(filter->hooks, filter_hook_wipe);
  73     array_deep_wipe(filter->params, filter_params_wipe);
  74     p_delete(&filter->name);
  75 }
  76
  77 filter_result_t filter_run(const filter_t *filter, const query_t *query)
  78 {
  79     return runners[filter->type](filter, query);
  80 }
  81
  82 void filter_set_name(filter_t *filter, const char *name, ssize_t len)
  83 {
  84     filter->name = p_new(char, len + 1);
  85     memcpy(filter->name, name, len);
  86     filter->name[len] = '\0';
  87 }
  88
  89 bool filter_set_type(filter_t *filter, const char *type, ssize_t len)
  90 {
  91     filter->type = filter_tokenize(type, len);
  92     return filter->type != FTK_UNKNOWN;
  93 }
  94
  95 bool filter_add_param(filter_t *filter, const char *name, ssize_t name_len,
  96                       const char *value, ssize_t value_len)
  97 {
  98     filter_params_t param;
  99     param.name = strdup(name);
 100     param.value = strdup(value);
 101     array_add(filter->params, param);
 102     return true;
 103 }
 104
 105 bool filter_add_hook(filter_t *filter, const char *name, ssize_t name_len,
 106                      const char *value, ssize_t value_len)
 107 {
 108     filter_hook_t hook;
 109     hook.name  = strdup(name);
 110     hook.value = strdup(value);
 111     array_add(filter->hooks, hook);
 112     return true;
 113 }