lib.c

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

int attach_body_count(struct Body *body, bool recurse)
{
  if (!body)
    return -1;
 
  int bodies = 0;
 
  for (struct Body *b = body; b; b = b->next)
  {
    bodies++;
    if (recurse)
    {
      if (b->parts)
        bodies += attach_body_count(b->parts, true);
    }
  }
 
  return bodies;
}

bool attach_body_parent(struct Body *start, struct Body *start_parent,
                        struct Body *body, struct Body **body_parent)
{
  if (!start || !body)
    return false;
 
  struct Body *b = start;
 
  if (b->parts)
  {
    if (b->parts == body)
    {
      *body_parent = b;
      return true;
    }
  }
  while (b)
  {
    if (b == body)
    {
      *body_parent = start_parent;
      if (start_parent)
        return true;
      else
        return false;
    }
    if (b->parts)
    {
      if (attach_body_parent(b->parts, b, body, body_parent))
        return true;
    }
    b = b->next;
  }
 
  return false;
}

struct Body *attach_body_ancestor(struct Body *start, struct Body *body, const char *subtype)
{
  if (!start || !body)
    return NULL;
 
  struct Body *b = body;
  struct Body *b_parent = NULL;
 
  while (attach_body_parent(start, NULL, b, &b_parent))
  {
    if (mutt_str_equal(subtype, b_parent->subtype))
      return b_parent;
    b = b_parent;
  }
 
  return NULL;
}

bool attach_body_previous(struct Body *start, struct Body *body, struct Body **previous)
{
  if (!start || !body)
    return false;
 
  struct Body *b = start;
 
  while (b)
  {
    if (b->next == body)
    {
      *previous = b;
      return true;
    }
    if (b->parts)
    {
      if (attach_body_previous(b->parts, body, previous))
        return true;
    }
    b = b->next;
  }
 
  return false;
}