LCOV - code coverage report
Current view: top level - shumate - shumate-vector-reader.c (source / functions) Hit Total Coverage
Test: Code coverage Lines: 21 22 95.5 %
Date: 2024-05-11 21:41:31 Functions: 7 7 100.0 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 4 6 66.7 %

           Branch data     Line data    Source code
       1                 :            : /*
       2                 :            :  * Copyright (C) 2023 James Westman <james@jwestman.net>
       3                 :            :  *
       4                 :            :  * This library is free software; you can redistribute it and/or
       5                 :            :  * modify it under the terms of the GNU Lesser General Public
       6                 :            :  * License as published by the Free Software Foundation; either
       7                 :            :  * version 2.1 of the License, or (at your option) any later version.
       8                 :            :  *
       9                 :            :  * This library is distributed in the hope that it will be useful,
      10                 :            :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      11                 :            :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12                 :            :  * Lesser General Public License for more details.
      13                 :            :  *
      14                 :            :  * You should have received a copy of the GNU Lesser General Public
      15                 :            :  * License along with this library; if not, see <https://www.gnu.org/licenses/>.
      16                 :            :  */
      17                 :            : 
      18                 :            : #include "shumate-vector-reader-private.h"
      19                 :            : #ifdef SHUMATE_HAS_VECTOR_RENDERER
      20                 :            : #include "vector/vector_tile.pb-c.h"
      21                 :            : #endif
      22                 :            : 
      23                 :            : /**
      24                 :            :  * ShumateVectorReader:
      25                 :            :  *
      26                 :            :  * Provides low-level access to the contents of a vector tile.
      27                 :            :  *
      28                 :            :  * To create a new [class@VectorReader], use [ctor@VectorReader.new] and pass
      29                 :            :  * the bytes of a vector tile, which you might get from a [class@DataSource].
      30                 :            :  * Then, use [method@VectorReader.iterate] to get a [class@VectorReaderIter]
      31                 :            :  * and iterate over the features in the tile. You can create multiple
      32                 :            :  * [class@VectorReaderIter]s from the same [class@VectorReader].
      33                 :            :  *
      34                 :            :  * Since: 1.2
      35                 :            :  */
      36                 :            : 
      37   [ +  +  +  - ]:        100 : G_DEFINE_TYPE (ShumateVectorReader, shumate_vector_reader, G_TYPE_OBJECT)
      38                 :            : 
      39                 :            : static void
      40                 :         21 : shumate_vector_reader_finalize (GObject *object)
      41                 :            : {
      42                 :         21 :   ShumateVectorReader *self = SHUMATE_VECTOR_READER (object);
      43                 :            : 
      44                 :            : #ifdef SHUMATE_HAS_VECTOR_RENDERER
      45                 :         21 :   vector_tile__tile__free_unpacked (self->tile, NULL);
      46                 :         21 :   self->tile = NULL;
      47                 :            : #endif
      48                 :            : 
      49                 :         21 :   G_OBJECT_CLASS (shumate_vector_reader_parent_class)->finalize (object);
      50                 :         21 : }
      51                 :            : 
      52                 :            : static void
      53                 :         13 : shumate_vector_reader_class_init (ShumateVectorReaderClass *klass)
      54                 :            : {
      55                 :         13 :   GObjectClass *object_class = G_OBJECT_CLASS (klass);
      56                 :            : 
      57                 :         13 :   object_class->finalize = shumate_vector_reader_finalize;
      58                 :            : }
      59                 :            : 
      60                 :            : static void
      61                 :         21 : shumate_vector_reader_init (ShumateVectorReader *self)
      62                 :            : {
      63                 :         21 : }
      64                 :            : 
      65                 :            : /**
      66                 :            :  * shumate_vector_reader_new:
      67                 :            :  * @bytes: (transfer none): A tile in Mapbox Vector Tile format
      68                 :            :  *
      69                 :            :  * Creates a new [class@VectorReader] from @bytes.
      70                 :            :  *
      71                 :            :  * Returns: (transfer full): A new [class@VectorReader]
      72                 :            :  *
      73                 :            :  * Since: 1.2
      74                 :            :  */
      75                 :            : ShumateVectorReader *
      76                 :         21 : shumate_vector_reader_new (GBytes *bytes)
      77                 :            : {
      78                 :            : #ifdef SHUMATE_HAS_VECTOR_RENDERER
      79                 :         21 :   g_autoptr(ShumateVectorReader) self = g_object_new(SHUMATE_TYPE_VECTOR_READER, NULL);
      80                 :         21 :   gconstpointer data;
      81                 :         21 :   gsize len;
      82                 :            : 
      83                 :         21 :   data = g_bytes_get_data (bytes, &len);
      84                 :         21 :   self->tile = vector_tile__tile__unpack (NULL, len, data);
      85                 :            : 
      86         [ -  + ]:         21 :   if (self->tile == NULL)
      87                 :          0 :     return NULL;
      88                 :            : 
      89                 :            :   return g_steal_pointer (&self);
      90                 :            : #else
      91                 :            :   g_warning ("Vector tile support is not enabled");
      92                 :            :   return NULL;
      93                 :            : #endif
      94                 :            : }
      95                 :            : 
      96                 :            : /**
      97                 :            :  * shumate_vector_reader_iterate:
      98                 :            :  * @self: A [class@VectorReader]
      99                 :            :  *
     100                 :            :  * Creates a new [class@VectorReaderIter] for @self.
     101                 :            :  *
     102                 :            :  * Returns: (transfer full): A new [class@VectorReaderIter]
     103                 :            :  *
     104                 :            :  * Since: 1.2
     105                 :            :  */
     106                 :            : ShumateVectorReaderIter *
     107                 :         39 : shumate_vector_reader_iterate (ShumateVectorReader *self)
     108                 :            : {
     109                 :            : #ifdef SHUMATE_HAS_VECTOR_RENDERER
     110                 :         39 :   return shumate_vector_reader_iter_new (self);
     111                 :            : #else
     112                 :            :   g_warning ("Vector tile support is not enabled");
     113                 :            :   return NULL;
     114                 :            : #endif
     115                 :            : }

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