prop_commands.c

subversion-1.4.3-1.tar.gz 配置svn的源码

  
  return SVN_NO_ERROR;
}


/* A baton for propget_walk_cb. */
struct propget_walk_baton
{
  const char *propname;  /* The name of the property to get. */
  svn_boolean_t pristine;  /* Select base rather than working props. */
  svn_wc_adm_access_t *base_access;  /* Access for the tree being walked. */
  apr_hash_t *props;  /* Out: mapping of (path:propval). */
};

/* An entries-walk callback for svn_client_propget.
 * 
 * For the path given by PATH and ENTRY,
 * populate wb->PROPS with the values of property wb->PROPNAME,
 * where "wb" is the WALK_BATON of type "struct propget_walk_baton *".
 * If wb->PRISTINE is true, use the base value, else use the working value.
 *
 * The keys of wb->PROPS will be 'const char *' paths, rooted at the
 * path svn_wc_adm_access_path(ADM_ACCESS), and the values are
 * 'const svn_string_t *' property values.
 */
static svn_error_t *
propget_walk_cb(const char *path,
                const svn_wc_entry_t *entry,
                void *walk_baton,
                apr_pool_t *pool)
{
  struct propget_walk_baton *wb = walk_baton;
  const svn_string_t *propval;

  /* We're going to receive dirents twice;  we want to ignore the
     first one (where it's a child of a parent dir), and only use
     the second one (where we're looking at THIS_DIR).  */
  if ((entry->kind == svn_node_dir)
      && (strcmp(entry->name, SVN_WC_ENTRY_THIS_DIR) != 0))
    return SVN_NO_ERROR;

  /* Ignore the entry if it does not exist at the time of interest. */
  if (entry->schedule
      == (wb->pristine ? svn_wc_schedule_add : svn_wc_schedule_delete))
    return SVN_NO_ERROR;

  SVN_ERR(pristine_or_working_propval(&propval, wb->propname, path,
                                      wb->base_access, wb->pristine,
                                      apr_hash_pool_get(wb->props)));

  if (propval)
    {
      path = apr_pstrdup(apr_hash_pool_get(wb->props), path);
      apr_hash_set(wb->props, path, APR_HASH_KEY_STRING, propval);
    }

  return SVN_NO_ERROR;
}


/* If REVISION represents a revision not present in the working copy,
 * then set *NEW_TARGET to the url for TARGET, allocated in POOL; else
 * set *NEW_TARGET to TARGET (just assign, do not copy), whether or
 * not TARGET is a url.
 *
 * TARGET and *NEW_TARGET may be the same, though most callers
 * probably don't want them to be.
 */
static svn_error_t *
maybe_convert_to_url(const char **new_target,
                     const char *target,
                     const svn_opt_revision_t *revision,
                     apr_pool_t *pool)
{
  /* If we don't already have a url, and the revision kind is such
     that we need a url, then get one. */
  if ((revision->kind != svn_opt_revision_unspecified)
      && (revision->kind != svn_opt_revision_base)
      && (revision->kind != svn_opt_revision_working)
      && (revision->kind != svn_opt_revision_committed)
      && (! svn_path_is_url(target)))
    {
      svn_wc_adm_access_t *adm_access;
      svn_node_kind_t kind;
      const char *pdir;
      const svn_wc_entry_t *entry;
      
      SVN_ERR(svn_io_check_path(target, &kind, pool));
      if (kind == svn_node_file)
        svn_path_split(target, &pdir, NULL, pool);
      else
        pdir = target;
      
      SVN_ERR(svn_wc_adm_open3(&adm_access, NULL, pdir, FALSE,
                               0, NULL, NULL, pool));
      SVN_ERR(svn_wc_entry(&entry, target, adm_access, FALSE, pool));
      if (! entry)
        return svn_error_createf(SVN_ERR_UNVERSIONED_RESOURCE, NULL,
                                 _("'%s' is not under version control"), 
                                 svn_path_local_style(target, pool));
      *new_target = entry->url;
    }
  else
    *new_target = target;

  return SVN_NO_ERROR;
}


/* Helper for the remote case of svn_client_propget.
 *
 * Get the value of property PROPNAME in REVNUM, using RA_LIB and
 * SESSION.  Store the value ('svn_string_t *') in PROPS, under the
 * path key "TARGET_PREFIX/TARGET_RELATIVE" ('const char *').
 *
 * If RECURSE is true and KIND is svn_node_dir, then recurse.
 *
 * KIND is the kind of the node at "TARGET_PREFIX/TARGET_RELATIVE".
 * Yes, caller passes this; it makes the recursion more efficient :-). 
 *
 * Allocate the keys and values in POOL.
 */
static svn_error_t *
remote_propget(apr_hash_t *props,
               const char *propname,
               const char *target_prefix,
               const char *target_relative,
               svn_node_kind_t kind,
               svn_revnum_t revnum,
               svn_ra_session_t *ra_session,
               svn_boolean_t recurse,
               apr_pool_t *pool)
{
  apr_hash_t *dirents;
  apr_hash_t *prop_hash;
  
  if (kind == svn_node_dir)
    {
      SVN_ERR(svn_ra_get_dir2(ra_session, (recurse ? &dirents : NULL), NULL,
                              &prop_hash, target_relative, revnum,
                              SVN_DIRENT_KIND, pool));
    }
  else if (kind == svn_node_file)
    {
      SVN_ERR(svn_ra_get_file(ra_session, target_relative, revnum,
                              NULL, NULL, &prop_hash, pool));
    }
  else if (kind == svn_node_none)
    {
      return svn_error_createf
        (SVN_ERR_ENTRY_NOT_FOUND, NULL,
         _("'%s' does not exist in revision '%ld'"),
         svn_path_join(target_prefix, target_relative, pool), revnum);
    }
  else
    {
      return svn_error_createf
        (SVN_ERR_NODE_UNKNOWN_KIND, NULL,
         _("Unknown node kind for '%s'"),
         svn_path_join(target_prefix, target_relative, pool));
    }
  
  apr_hash_set(props,
               svn_path_join(target_prefix, target_relative, pool),
               APR_HASH_KEY_STRING,
               apr_hash_get(prop_hash, propname, APR_HASH_KEY_STRING));
  
  
  if (recurse && (kind == svn_node_dir) && (apr_hash_count(dirents) > 0))
    {
      apr_hash_index_t *hi;

      for (hi = apr_hash_first(pool, dirents);
           hi;
           hi = apr_hash_next(hi))
        {
          const void *key;
          void *val;
          const char *this_name;
          svn_dirent_t *this_ent;
          const char *new_target_relative;

          apr_hash_this(hi, &key, NULL, &val);
          this_name = key;
          this_ent = val;

          new_target_relative = svn_path_join(target_relative,
                                              this_name, pool);

          SVN_ERR(remote_propget(props,
                                 propname,
                                 target_prefix,
                                 new_target_relative,
                                 this_ent->kind,
                                 revnum,
                                 ra_session,
                                 recurse,
                                 pool));
        }
    }

  return SVN_NO_ERROR;
}


/* Note: this implementation is very similar to svn_client_proplist. */
svn_error_t *
svn_client_propget2(apr_hash_t **props,
                    const char *propname,
                    const char *target,
                    const svn_opt_revision_t *peg_revision,
                    const svn_opt_revision_t *revision,
                    svn_boolean_t recurse,
                    svn_client_ctx_t *ctx,
                    apr_pool_t *pool)
{
  svn_wc_adm_access_t *adm_access;
  const svn_wc_entry_t *node;
  const char *utarget;  /* target, or the url for target */
  const char *url;
  svn_revnum_t revnum;

  SVN_ERR(error_if_wcprop_name(propname));

  *props = apr_hash_make(pool);

  SVN_ERR(maybe_convert_to_url(&utarget, target, revision, pool));

  /* Iff utarget is a url, that means we must use it, that is, the
     requested property information is not available locally. */
  if (svn_path_is_url(utarget))
    {
      svn_ra_session_t *ra_session;
      svn_node_kind_t kind;

      /* Get an RA plugin for this filesystem object. */
      SVN_ERR(svn_client__ra_session_from_path(&ra_session, &revnum,
                                               &url, target, peg_revision,
                                               revision, ctx, pool));

      SVN_ERR(svn_ra_check_path(ra_session, "", revnum, &kind, pool));

      SVN_ERR(remote_propget(*props, propname, url, "",
                             kind, revnum, ra_session,
                             recurse, pool));
    }
  else  /* working copy path */
    {
      svn_boolean_t pristine;
      struct propget_walk_baton wb;
      static const svn_wc_entry_callbacks_t walk_callbacks
        = { propget_walk_cb };

      SVN_ERR(svn_wc_adm_probe_open3(&adm_access, NULL, target,
                                     FALSE, recurse ? -1 : 0,
                                     ctx->cancel_func, ctx->cancel_baton,
                                     pool));
      SVN_ERR(svn_wc_entry(&node, target, adm_access, FALSE, pool));
      if (! node)
        return svn_error_createf 
          (SVN_ERR_UNVERSIONED_RESOURCE, NULL,
           _("'%s' is not under version control"),
           svn_path_local_style(target, pool));
      
      SVN_ERR(svn_client__get_revision_number
              (&revnum, NULL, revision, target, pool));

      if ((revision->kind == svn_opt_revision_committed)
          || (revision->kind == svn_opt_revision_base))
        {
          pristine = TRUE;
        }
      else  /* must be the working revision */
        {
          pristine = FALSE;
        }

      wb.base_access = adm_access;
      wb.props = *props;
      wb.propname = propname;
      wb.pristine = pristine;

      /* Fetch, recursively or not. */
      if (recurse && (node->kind == svn_node_dir))
        {
          SVN_ERR(svn_wc_walk_entries2(target, adm_access,
                                       &walk_callbacks, &wb, FALSE,
                                       ctx->cancel_func, ctx->cancel_baton,
                                       pool));
        }
      else
        {
          const svn_wc_entry_t *entry;
          SVN_ERR(svn_wc_entry(&entry, target, adm_access, FALSE, pool));
          SVN_ERR(walk_callbacks.found_entry(target, entry, &wb, pool));
        }
      
      SVN_ERR(svn_wc_adm_close(adm_access));
    }

  return SVN_NO_ERROR;
}


svn_error_t *
svn_client_propget(apr_hash_t **props,
                   const char *propname,
                   const char *target,
                   const svn_opt_revision_t *revision,
                   svn_boolean_t recurse,
                   svn_client_ctx_t *ctx,
                   apr_pool_t *pool)
{
  return svn_client_propget2(props, propname, target, revision, revision,
                             recurse, ctx, pool);
}
  
svn_error_t *
svn_client_revprop_get(const char *propname,
                       svn_string_t **propval,
                       const char *URL,
                       const svn_opt_revision_t *revision,
                       svn_revnum_t *set_rev,
                       svn_client_ctx_t *ctx,
                       apr_pool_t *pool)
{
  svn_ra_session_t *ra_session;

  /* Open an RA session for the URL. Note that we don't have a local
     directory, nor a place to put temp files. */
  SVN_ERR(svn_client__open_ra_session_internal(&ra_session, URL, NULL,
                                               NULL, NULL, FALSE, TRUE,
                                               ctx, pool));

  /* Resolve the revision into something real, and return that to the
     caller as well. */
  SVN_ERR(svn_client__get_revision_number
          (set_rev, ra_session, revision, NULL, pool));

  /* The actual RA call. */
  SVN_ERR(svn_ra_rev_prop(ra_session, *set_rev, propname, propval, pool));

  return SVN_NO_ERROR;
}


/* Push a new 'svn_client_proplist_item_t *' item onto LIST.