m_struct.c

   1 #include "config.h"
   2
   3 #include <stdlib.h>
   4 #include <string.h>
   5
   6 #include "m_option.h"
   7 #include "m_struct.h"
   8 #include "mp_msg.h"
   9
  10 m_option_t*
  11 m_struct_get_field(m_struct_t* st,char* f) {
  12   int i;
  13
  14   for(i = 0 ; st->fields[i].name ; i++) {
  15     if(strcasecmp(st->fields[i].name,f) == 0)
  16       return &st->fields[i];
  17   }
  18   return NULL;
  19 }
  20
  21 void*
  22 m_struct_alloc(m_struct_t* st) {
  23   int i;
  24   void* r;
  25
  26   if(!st->defaults) {
  27     mp_msg(MSGT_CFGPARSER, MSGL_ERR,"Struct %s needs defaults\n",st->name);
  28     return NULL;
  29   }
  30   // Check the struct fields
  31   for(i = 0 ; st->fields[i].name ; i++) {
  32     if(st->fields[i].type->flags & M_OPT_TYPE_INDIRECT) {
  33       mp_msg(MSGT_CFGPARSER, MSGL_ERR,"Struct %s->%s: option type with the indirect flag are forbiden\n",st->name,st->fields[i].name);
  34       return NULL;
  35     }
  36   }
  37
  38   r = calloc(1,st->size);
  39   memcpy(r,st->defaults,st->size);
  40
  41   for(i = 0 ; st->fields[i].name ; i++) {
  42     if(st->fields[i].type->flags & M_OPT_TYPE_DYNAMIC)
  43       memset(M_ST_MB_P(r,st->fields[i].p),0,st->fields[i].type->size);
  44     m_option_copy(&st->fields[i],M_ST_MB_P(r,st->fields[i].p),M_ST_MB_P(st->defaults,st->fields[i].p));
  45   }
  46   return r;
  47 }
  48
  49 int
  50 m_struct_set(m_struct_t* st, void* obj, char* field, char* param) {
  51   m_option_t* f = m_struct_get_field(st,field);
  52
  53   if(!f) {
  54     mp_msg(MSGT_CFGPARSER, MSGL_ERR,"Struct %s doesn't have any %s field\n",
  55            st->name,field);
  56     return 0;
  57   }
  58
  59   if(f->type->parse(f,field,param,M_ST_MB_P(obj,f->p),M_CONFIG_FILE) < 0) {
  60     mp_msg(MSGT_CFGPARSER, MSGL_ERR,"Struct %s, field %s parsing error: %s\n",
  61            st->name,field,param);
  62     return 0;
  63   }
  64
  65   return 1;
  66 }
  67
  68 void
  69 m_struct_reset(m_struct_t* st, void* obj, char* field) {
  70   m_option_t* f;
  71
  72   if(!field) { // Reset all options
  73     int i;
  74     for(i = 0 ; st->fields[i].name ; i++)
  75       m_option_copy(&st->fields[i],M_ST_MB_P(obj,st->fields[i].p),M_ST_MB_P(st->defaults,st->fields[i].p));
  76     return;
  77   }
  78
  79   // Only one
  80   f = m_struct_get_field(st,field);
  81   if(!f) {
  82     mp_msg(MSGT_CFGPARSER, MSGL_ERR,"Struct %s doesn't have any %s field\n",
  83            st->name,field);
  84     return;
  85   }
  86   m_option_copy(f,M_ST_MB_P(obj,f->p),M_ST_MB_P(st->defaults,f->p));
  87 }
  88
  89 /// Free an allocated struct
  90 void
  91 m_struct_free(m_struct_t* st, void* obj) {
  92   int i;
  93
  94   for(i = 0 ; st->fields[i].name ; i++)
  95     m_option_free(&st->fields[i],M_ST_MB_P(obj,st->fields[i].p));
  96   free(obj);
  97 }
  98
  99 void*
 100 m_struct_copy(m_struct_t* st, void* obj) {
 101   void* r = malloc(st->size);
 102   int i;
 103
 104   memcpy(r,obj,st->size);
 105   for(i = 0 ; st->fields[i].name ; i++) {
 106     if(st->fields[i].type->flags & M_OPT_TYPE_DYNAMIC)
 107       memset(M_ST_MB_P(r,st->fields[i].p),0,st->fields[i].type->size);
 108     m_option_copy(&st->fields[i],M_ST_MB_P(r,st->fields[i].p),M_ST_MB_P(obj,st->fields[i].p));
 109   }
 110
 111   return r;
 112 }