X-Git-Url: https://git.street.me.uk/andy/viking.git/blobdiff_plain/59de083b4da4c6babb5b86e8362cbd490b102c04..a29212b08440e5a50314a40f33f343942fcbcc51:/src/google.c

diff --git a/src/google.c b/src/google.c
index 062a6e08..e055dc85 100644
--- a/src/google.c
+++ b/src/google.c
@@ -22,33 +22,18 @@
 #include "config.h"
 #endif
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
 #include <glib/gi18n.h>
-#include <gtk/gtk.h>
-#include <math.h>
-#include <string.h>
-#include "coords.h"
-#include "vikcoord.h"
-#include "mapcoord.h"
-#include "download.h"
-#include "curl_download.h"
-#include "globals.h"
+
 #include "google.h"
 #include "google-map-type.h"
+#include "google-kh-map-type.h"
 #include "vikmapslayer.h"
 
 
-static int google_kh_download ( MapCoord *src, const gchar *dest_fn );
-static void google_mapcoord_to_center_coord ( MapCoord *src, VikCoord *dest );
-
-static DownloadOptions google_options = { "http://maps.google.com/", 0, a_check_map_file };
-
 void google_init () {
   VikMapType *google_1 = VIK_MAP_TYPE(google_map_type_new_with_id(7, TYPE_GOOGLE_MAPS));
   VikMapType *google_2 = VIK_MAP_TYPE(google_map_type_new_with_id(10, TYPE_GOOGLE_TRANS));
-  VikMapType *google_3 = VIK_MAP_TYPE(google_map_type_new_with_id(11, TYPE_GOOGLE_SAT));
+  VikMapType *google_3 = VIK_MAP_TYPE(google_kh_map_type_new_with_id(11));
   VikMapType *google_4 = VIK_MAP_TYPE(google_map_type_new_with_id(16, TYPE_GOOGLE_TERRAIN));
 
   maps_layer_register_type(_("Google Maps"), 7, google_1);
@@ -56,222 +41,3 @@ void google_init () {
   maps_layer_register_type(_("Google Satellite Images"), 11, google_3);
   maps_layer_register_type(_("Google Terrain Maps"), 16, google_4);
 }
-
-/* 1 << (x) is like a 2**(x) */
-#define GZ(x) ((1<<x))
-
-static const gdouble scale_mpps[] = { GZ(0), GZ(1), GZ(2), GZ(3), GZ(4), GZ(5), GZ(6), GZ(7), GZ(8), GZ(9),
-                                           GZ(10), GZ(11), GZ(12), GZ(13), GZ(14), GZ(15), GZ(16), GZ(17) };
-
-static const gint num_scales = (sizeof(scale_mpps) / sizeof(scale_mpps[0]));
-
-#define ERROR_MARGIN 0.01
-static guint8 google_zoom ( gdouble mpp ) {
-  gint i;
-  for ( i = 0; i < num_scales; i++ ) {
-    if ( ABS(scale_mpps[i] - mpp) < ERROR_MARGIN )
-      return i;
-  }
-  return 255;
-}
-
-static gchar *parse_version_number(gchar *text)
-{
-  int i;
-  gchar *vers;
-  gchar *s = text;
-
-  for (i = 0; (s[i] != '\\') && (i < 8); i++)
-    ;
-  if (s[i] != '\\') {
-    return NULL;
-  }
-
-  return vers = g_strndup(s, i);
-}
-
-static const gchar *google_version_number(MapCoord *mapcoord, GoogleType google_type)
-{
-  static gboolean first = TRUE;
-  static char *vers[] = { "w2.80", "w2t.80", "30", "w2p.81"};
-  FILE *tmp_file;
-  int tmp_fd;
-  gchar *tmpname;
-  gchar *uri;
-  VikCoord coord;
-  gchar coord_north_south[G_ASCII_DTOSTR_BUF_SIZE], coord_east_west[G_ASCII_DTOSTR_BUF_SIZE];
-  gchar *text, *pat, *beg;
-  GMappedFile *mf;
-  gsize len;
-  gchar *gvers, *tvers, *kvers, *terrvers, *tmpvers;
-  static DownloadOptions dl_options = { "http://maps.google.com/", 0, a_check_map_file };
-  /* static const char *gvers_pat = "http://mt0.google.com/mt?v\\x3d"; */
-  static const char *gvers_pat = "http://mt0.google.com/mt";
-  static const char *kvers_pat = "http://khm0.google.com/kh?v\\x3d";
-
-  g_assert(google_type < TYPE_GOOGLE_NUM);
-
-  if (!first)
-    return (vers[google_type]);
-
-
-  first = FALSE;
-  gvers = tvers = kvers = terrvers = NULL;
-  if ((tmp_fd = g_file_open_tmp ("vikgvers.XXXXXX", &tmpname, NULL)) == -1) {
-    g_critical(_("couldn't open temp file %s"), tmpname);
-    exit(1);
-  } 
-
-  google_mapcoord_to_center_coord(mapcoord, &coord);
-  uri = g_strdup_printf("http://maps.google.com/maps?f=q&hl=en&q=%s,%s",
-                        g_ascii_dtostr (coord_north_south, G_ASCII_DTOSTR_BUF_SIZE, (gdouble) coord.north_south),
-                        g_ascii_dtostr (coord_east_west, G_ASCII_DTOSTR_BUF_SIZE, (gdouble) coord.east_west));
-  tmp_file = fdopen(tmp_fd, "r+");
-
-  if (curl_download_uri(uri, tmp_file, &dl_options)) {  /* error */
-    g_warning(_("Failed downloading %s"), tmpname);
-  } else {
-    if ((mf = g_mapped_file_new(tmpname, FALSE, NULL)) == NULL) {
-      g_critical(_("couldn't map temp file"));
-      exit(1);
-    }
-    len = g_mapped_file_get_length(mf);
-    text = g_mapped_file_get_contents(mf);
-
-    if ((beg = g_strstr_len(text, len, "GLoadApi")) == NULL) {
-      g_warning(_("Failed fetching Google numbers (\"GLoadApi\" not found)"));
-      goto failed;
-    }
-
-    pat = beg;
-    while (!gvers || !tvers ||!terrvers) {
-      if ((pat = g_strstr_len(pat, &text[len] - pat, gvers_pat)) != NULL) {
-        pat += strlen(gvers_pat);
-	if ((pat[0] != '/' && pat[0] != '?') ||
-	     pat[1] != 'v' || pat[2] != '\\' ||
-	     pat[3] != 'x' || pat[4] != '3' || pat[5] != 'd')
-          continue;
-        pat += 6;
-        if ((tmpvers = parse_version_number(pat)) != NULL) {
-          if (strstr(tmpvers, "t."))
-            tvers = tmpvers;
-          else if (strstr(tmpvers, "p."))
-            terrvers = tmpvers;
-          else
-            gvers = tmpvers;
-        }
-      }
-      else
-        break;
-    }
-
-    if ((pat = g_strstr_len(beg, &text[len] - beg, kvers_pat)) != NULL)
-        kvers = parse_version_number(pat + strlen(kvers_pat));
-
-    if (gvers && tvers && kvers) {
-      vers[TYPE_GOOGLE_MAPS] = gvers;
-      vers[TYPE_GOOGLE_TRANS] = tvers;
-      vers[TYPE_GOOGLE_SAT] = kvers;
-      vers[TYPE_GOOGLE_TERRAIN] = terrvers;
-    }
-    else
-      g_warning(_("Failed getting google version numbers"));
-
-    if (gvers)
-      fprintf(stderr, "DEBUG gvers=%s\n", gvers);
-    if (tvers)
-      fprintf(stderr, "DEBUG tvers=%s\n", tvers);
-    if (terrvers)
-      fprintf(stderr, "DEBUG terrvers=%s\n", terrvers);
-    if (kvers)
-      fprintf(stderr, "DEBUG kvers=%s\n", kvers);
-
-failed:
-    g_mapped_file_free(mf);
-  }
-
-  fclose(tmp_file);
-  tmp_file = NULL;
-  g_free(tmpname);
-  g_free (uri);
-  return (vers[google_type]);
-}
-
-gboolean google_coord_to_mapcoord ( const VikCoord *src, gdouble xzoom, gdouble yzoom, MapCoord *dest )
-{
-  g_assert ( src->mode == VIK_COORD_LATLON );
-
-  if ( xzoom != yzoom )
-    return FALSE;
-
-  dest->scale = google_zoom ( xzoom );
-  if ( dest->scale == 255 )
-    return FALSE;
-
-  dest->x = (src->east_west + 180) / 360 * GZ(17) / xzoom;
-  dest->y = (180 - MERCLAT(src->north_south)) / 360 * GZ(17) / xzoom;
-  dest->z = 0;
-
-  return TRUE;
-}
-
-static void google_mapcoord_to_center_coord ( MapCoord *src, VikCoord *dest )
-{
-  gdouble socalled_mpp = GZ(src->scale);
-  dest->mode = VIK_COORD_LATLON;
-  dest->east_west = ((src->x+0.5) / GZ(17) * socalled_mpp * 360) - 180;
-  dest->north_south = DEMERCLAT(180 - ((src->y+0.5) / GZ(17) * socalled_mpp * 360));
-}
-
-static char *kh_encode(guint32 x, guint32 y, guint8 scale)
-{
-  gchar *buf = g_malloc ( (20-scale)*sizeof(gchar) );
-  guint32 ya = 1 << (17 - scale);
-  gint8 i, j;
-
-  if (y < 0 || (ya-1 < y)) {
-    strcpy(buf,"tqq"); /* BAD */
-    return buf;
-  }
-  if (x < 0 || ya-1 < x) {
-    x %= ya;
-    if (x < 0)
-      x += ya;
-  }
-
-  buf[0] = 't';
-  for (j = 1, i = 16; i >= scale; i--, j++) {
-    ya /= 2;
-    if (y < ya) {
-      if (x < ya)
-        buf[j]='q';
-      else {
-        buf[j]='r';
-        x -= ya;
-      }
-    } else {
-      if (x < ya) {
-        buf[j] = 't';
-        y -= ya;
-      } else {
-        buf[j] = 's';
-        x -= ya;
-        y -= ya;
-      }
-    }
-  }
-  buf[j] = '\0';
-  return buf;
-}
-
-static int google_kh_download ( MapCoord *src, const gchar *dest_fn )
-{
-   int res;
-   gchar *khenc = kh_encode( src->x, src->y, src->scale );
-   const gchar *vers_str = google_version_number(src, TYPE_GOOGLE_SAT);
-   gchar *uri = g_strdup_printf ( "/kh?n=404&v=%s&t=%s", vers_str, khenc );
-   g_free ( khenc );
-   res = a_http_download_get_url ( "khm.google.com", uri, dest_fn, &google_options );
-   g_free ( uri );
-   return(res);
-}