vcs.maemo.org Git - navit-package/blob - navit/maptool/sourcesink.c

   1 #include <stdio.h>
   2 #include <glib.h>
   3 #include <string.h>
   4 #include "coord.h"
   5 #include "item.h"
   6 #include "attr.h"
   7 #include "maptool.h"
   8
   9 struct item_bin_sink *
  10 item_bin_sink_new(void)
  11 {
  12         struct item_bin_sink *ret=g_new0(struct item_bin_sink, 1);
  13
  14         return ret;
  15 }
  16
  17 struct item_bin_sink_func *
  18 item_bin_sink_func_new(int (*func)(struct item_bin_sink_func *func, struct item_bin *ib, struct tile_data *tile_data))
  19 {
  20         struct item_bin_sink_func *ret=g_new0(struct item_bin_sink_func, 1);
  21         ret->func=func;
  22         return ret;
  23 }
  24
  25 void
  26 item_bin_sink_func_destroy(struct item_bin_sink_func *func)
  27 {
  28         g_free(func);
  29 }
  30
  31 void
  32 item_bin_sink_add_func(struct item_bin_sink *sink, struct item_bin_sink_func *func)
  33 {
  34         sink->sink_funcs=g_list_append(sink->sink_funcs, func);
  35 }
  36
  37 void
  38 item_bin_sink_destroy(struct item_bin_sink *sink)
  39 {
  40         /* g_list_foreach(sink->sink_funcs, (GFunc)g_free, NULL); */
  41         g_list_free(sink->sink_funcs);
  42         g_free(sink);
  43 }
  44
  45 int
  46 item_bin_write_to_sink(struct item_bin *ib, struct item_bin_sink *sink, struct tile_data *tile_data)
  47 {
  48         GList *list=sink->sink_funcs;
  49         int ret=0;
  50         while (list) {
  51                 struct item_bin_sink_func *func=list->data;
  52                 ret=func->func(func, ib, tile_data);
  53                 if (ret)
  54                         break;
  55                 list=g_list_next(list);
  56         }
  57         return ret;
  58 }
  59
  60 struct item_bin_sink *
  61 file_reader_new(FILE *in, int limit, int offset)
  62 {
  63         struct item_bin_sink *ret;
  64         if (!in)
  65                 return NULL;
  66         ret=item_bin_sink_new();
  67         ret->priv_data[0]=in;
  68         ret->priv_data[1]=(void *)(long)limit;
  69         ret->priv_data[2]=(void *)(long)offset;
  70         fseek(in, 0, SEEK_SET);
  71         return ret;
  72 }
  73
  74 int
  75 file_reader_finish(struct item_bin_sink *sink)
  76 {
  77         struct item_bin *ib=(struct item_bin *)buffer;
  78         int ret =0;
  79         FILE *in=sink->priv_data[0];
  80         int limit=(int)(long)sink->priv_data[1];
  81         int offset=(int)(long)sink->priv_data[2];
  82         for (;;) {
  83                 switch (item_bin_read(ib, in)) {
  84                 case 0:
  85                         item_bin_sink_destroy(sink);
  86                         return 0;
  87                 case 2:
  88                         if (offset > 0) {
  89                                 offset--;
  90                         } else {
  91                                 ret=item_bin_write_to_sink(ib, sink, NULL);
  92                                 if (ret || (limit != -1 && !--limit)) {
  93                                         item_bin_sink_destroy(sink);
  94                                         return ret;
  95                                 }
  96                         }
  97                 default:
  98                         continue;
  99                 }
 100         }
 101 }
 102
 103 int
 104 file_writer_process(struct item_bin_sink_func *func, struct item_bin *ib, struct tile_data *tile_data)
 105 {
 106         FILE *out=func->priv_data[0];
 107         item_bin_write(ib, out);
 108         return 0;
 109 }
 110
 111 struct item_bin_sink_func *
 112 file_writer_new(FILE *out)
 113 {
 114         struct item_bin_sink_func *file_writer;
 115         if (!out)
 116                 return NULL;
 117         file_writer=item_bin_sink_func_new(file_writer_process);
 118         file_writer->priv_data[0]=out;
 119         return file_writer;
 120 }
 121
 122 int
 123 file_writer_finish(struct item_bin_sink_func *file_writer)
 124 {
 125         item_bin_sink_func_destroy(file_writer);
 126         return 0;
 127 }
 128
 129
 130 int
 131 tile_collector_process(struct item_bin_sink_func *tile_collector, struct item_bin *ib, struct tile_data *tile_data)
 132 {
 133         int *buffer,*buffer2;
 134         int len=ib->len+1;
 135         GHashTable *hash=tile_collector->priv_data[0];
 136         buffer=g_hash_table_lookup(hash, tile_data->buffer);
 137         buffer2=g_malloc((len+(buffer ? buffer[0] : 1))*4);
 138         if (buffer) {
 139                 memcpy(buffer2, buffer, buffer[0]*4);
 140         } else
 141                 buffer2[0]=1;
 142         memcpy(buffer2+buffer2[0], ib, len*4);
 143         buffer2[0]+=len;
 144         g_hash_table_insert(hash, g_strdup(tile_data->buffer), buffer2);
 145         return 0;
 146 }
 147
 148 struct item_bin_sink_func *
 149 tile_collector_new(struct item_bin_sink *out)
 150 {
 151         struct item_bin_sink_func *tile_collector;
 152         tile_collector=item_bin_sink_func_new(tile_collector_process);
 153         tile_collector->priv_data[0]=g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_free);
 154         tile_collector->priv_data[1]=out;
 155         return tile_collector;
 156 }
 157