myvar.c

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#include "config.h"
#include <stddef.h>
#include "mutt/lib.h"
#include "myvar.h"

struct MyVarList MyVars = TAILQ_HEAD_INITIALIZER(MyVars);

static struct MyVar *myvar_new(const char *name, const char *value)
{
  struct MyVar *myv = mutt_mem_calloc(1, sizeof(struct MyVar));
  myv->name = mutt_str_dup(name);
  myv->value = mutt_str_dup(value);
  return myv;
}

static void myvar_free(struct MyVar **ptr)
{
  if (!ptr || !*ptr)
    return;

  struct MyVar *myv = *ptr;
  FREE(&myv->name);
  FREE(&myv->value);
  FREE(ptr);
}

static struct MyVar *myvar_find(const char *var)
{
  struct MyVar *myv = NULL;

  TAILQ_FOREACH(myv, &MyVars, entries)
  {
    if (mutt_str_equal(myv->name, var))
      return myv;
  }

  return NULL;
}

const char *myvar_get(const char *var)
{
  struct MyVar *myv = myvar_find(var);

  if (myv)
  {
    return NONULL(myv->value);
  }

  return NULL;
}

void myvar_set(const char *var, const char *val)
{
  struct MyVar *myv = myvar_find(var);

  if (myv)
  {
    mutt_str_replace(&myv->value, val);
    return;
  }

  myv = myvar_new(var, val);
  TAILQ_INSERT_TAIL(&MyVars, myv, entries);
}

void myvar_append(const char *var, const char *val)
{
  struct MyVar *myv = myvar_find(var);

  if (myv)
  {
    mutt_str_append_item(&myv->value, val, '\0');
    return;
  }

  myv = myvar_new(var, val);
  TAILQ_INSERT_TAIL(&MyVars, myv, entries);
}

void myvar_del(const char *var)
{
  struct MyVar *myv = myvar_find(var);

  if (myv)
  {
    TAILQ_REMOVE(&MyVars, myv, entries);
    myvar_free(&myv);
  }
}

void myvarlist_free(struct MyVarList *list)
{
  if (!list)
    return;

  struct MyVar *myv = NULL;
  struct MyVar *tmp = NULL;
  TAILQ_FOREACH_SAFE(myv, list, entries, tmp)
  {
    TAILQ_REMOVE(list, myv, entries);
    myvar_free(&myv);
  }
}