From a930dcbc60244d83e2e4e6417befe55352d98f57 Mon Sep 17 00:00:00 2001
From: Frederik Ramm <frederik@remote.org>
Date: Tue, 5 Jan 2016 23:58:25 +0100
Subject: [PATCH] remove meta2tile

---
 extra/Makefile    |   2 -
 extra/README      |   5 -
 extra/meta2tile.c | 428 ----------------------------------------------
 3 files changed, 435 deletions(-)
 delete mode 100644 extra/Makefile
 delete mode 100644 extra/README
 delete mode 100644 extra/meta2tile.c

diff --git a/extra/Makefile b/extra/Makefile
deleted file mode 100644
index a20aea88..00000000
--- a/extra/Makefile
+++ /dev/null
@@ -1,2 +0,0 @@
-meta2tile: meta2tile.c 
-	gcc -O3 -std=gnu99 -I../includes -I/usr/include  meta2tile.c -o meta2tile -lm
diff --git a/extra/README b/extra/README
deleted file mode 100644
index 78aac211..00000000
--- a/extra/README
+++ /dev/null
@@ -1,5 +0,0 @@
-meta2tile.c is a small utility to convert meta tiles into normal tiles.
-It is similar to convert_meta.c, but convert_meta.c creates individual 
-tiles in a "hashed" directory structure whereas meta2tile.c creates them
-in a simple z/x/y directory structure.
-
diff --git a/extra/meta2tile.c b/extra/meta2tile.c
deleted file mode 100644
index 8562f029..00000000
--- a/extra/meta2tile.c
+++ /dev/null
@@ -1,428 +0,0 @@
-// meta2tile.c
-// written by Frederik Ramm <frederik@remote.org>
-// License: GPL because this is based on other work in mod_tile
-
-#define _GNU_SOURCE
-
-#include <stdio.h>
-#include <sys/mman.h>
-#include <sys/types.h>
-#include <dirent.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <ctype.h>
-#include <math.h>
-#include <getopt.h>
-#include <string.h>
-
-#include "store_file.h"
-#include "metatile.h"
-
-#define MIN(x,y) ((x)<(y)?(x):(y))
-#define META_MAGIC "META"
-
-static int verbose = 0;
-static int num_render = 0;
-static struct timeval start, end;
-
-const char *source;
-const char *target;
-
-#define MODE_STAT 1
-#define MODE_GLOB 2
-#define MAXZOOM 20
-
-int mode = MODE_GLOB;
-
-int zoom[MAXZOOM+1];
-float bbox[4] = {-180.0, -90.0, 180.0, 90.0};
-
-int path_to_xyz(const char *path, int *px, int *py, int *pz)
-{
-    int i, n, hash[5], x, y, z;
-    char copy[PATH_MAX];
-    strcpy(copy, path);
-    char *slash = rindex(copy, '/');
-    int c=5;
-    while (slash && c)
-    {
-        *slash = 0;
-        c--;
-        hash[c]= atoi(slash+1);
-        slash = rindex(copy, '/');
-    }
-    if (c != 0)
-    {
-        fprintf(stderr, "Failed to parse tile path: %s\n", path);
-        return 1;
-    }
-    *slash = 0;
-    *pz = atoi(slash+1);
-
-    x = y = 0;
-    for (i=0; i<5; i++)
-    {
-        if (hash[i] < 0 || hash[i] > 255)
-        {
-            fprintf(stderr, "Failed to parse tile path (invalid %d): %s\n", hash[i], path);
-            return 2;
-        }
-        x <<= 4;
-        y <<= 4;
-        x |= (hash[i] & 0xf0) >> 4;
-        y |= (hash[i] & 0x0f);
-    }
-    z = *pz;
-    *px = x;
-    *py = y;
-    return 0;
-}
-
-int long2tilex(double lon, int z) 
-{ 
-    return (int)(floor((lon + 180.0) / 360.0 * pow(2.0, z))); 
-}
- 
-int lat2tiley(double lat, int z)
-{ 
-    return (int)(floor((1.0 - log( tan(lat * M_PI/180.0) + 1.0 / cos(lat * M_PI/180.0)) / M_PI) / 2.0 * pow(2.0, z))); 
-}
- 
-double tilex2long(int x, int z) 
-{
-    return x / pow(2.0, z) * 360.0 - 180;
-}
- 
-double tiley2lat(int y, int z) 
-{
-    double n = M_PI - 2.0 * M_PI * y / pow(2.0, z);
-    return 180.0 / M_PI * atan(0.5 * (exp(n) - exp(-n)));
-}
-
-int expand_meta(const char *name)
-{
-    int fd;
-    char header[4096];
-    int x, y, z;
-    size_t pos;
-    void *buf;
-
-    if (path_to_xyz(name, &x, &y, &z)) return -1;
-
-    int limit = (1 << z);
-    limit = MIN(limit, METATILE);
-
-    float fromlat = tiley2lat(y+8, z);
-    float tolat = tiley2lat(y, z);
-    float fromlon = tilex2long(x, z);
-    float tolon = tilex2long(x+8, z);
-
-    if (tolon < bbox[0] || fromlon > bbox[2] || tolat < bbox[1] || fromlat > bbox[3])
-    {
-        if (verbose) printf("z=%d x=%d y=%d is out of bbox\n", z, x, y);
-        return -8;
-    }
-
-    fd = open(name, O_RDONLY);
-    if (fd < 0) 
-    {
-        fprintf(stderr, "Could not open metatile %s. Reason: %s\n", name, strerror(errno));
-        return -1;
-    }
-
-    struct stat st;
-    fstat(fd, &st);
-
-    buf = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
-    if (buf == MAP_FAILED)
-    {
-        fprintf(stderr, "Cannot mmap file %s for %ld bytes: %s\n", name, st.st_size, strerror(errno));
-        close(fd);
-        return -3;
-    }
-    struct meta_layout *m = (struct meta_layout *)buf;
-
-    if (memcmp(m->magic, META_MAGIC, strlen(META_MAGIC))) 
-    {
-        fprintf(stderr, "Meta file %s header magic mismatch\n", name);
-        close(fd);
-        return -4;
-    }
-
-    if (m->count != (METATILE * METATILE)) 
-    {
-        fprintf(stderr, "Meta file %s header bad count %d != %d\n", name, m->count, METATILE * METATILE);
-        close(fd);
-        return -5;
-    }
-
-    char path[PATH_MAX];
-    sprintf(path, "%s/%d", target, z);
-    if (mkdir(path, 0755) && (errno != EEXIST))
-    {
-        fprintf(stderr, "cannot create directory %s: %s\n", path, strerror(errno));
-        close(fd);            
-        return -1;
-    }
-
-    for (int meta = 0; meta < METATILE*METATILE; meta++)
-    {
-        int tx = x + (meta / METATILE);
-        int ty = y + (meta % METATILE);
-        int output;
-
-        if (ty==y)
-        {
-            sprintf(path, "%s/%d/%d", target, z, tx);
-            if (mkdir(path, 0755) && (errno != EEXIST))
-            {
-                fprintf(stderr, "cannot create directory %s: %s\n", path, strerror(errno));
-                close(fd);            
-                return -1;
-            }
-        }
-
-        sprintf(path, "%s/%d/%d/%d.png", target, z, tx, ty);
-        output = open(path, O_WRONLY | O_TRUNC | O_CREAT, 0666);
-        if (output == -1)
-        {
-            fprintf(stderr, "cannot open %s for writing: %s\n", path, strerror(errno));
-            close(fd);            
-            return -1;
-        }
-
-        pos = 0;
-        while (pos < m->index[meta].size) 
-        {
-            size_t len = m->index[meta].size - pos;
-            int written = write(output, buf + pos + m->index[meta].offset, len);
-            if (written < 0) 
-            {
-                fprintf(stderr, "Failed to write data to file %s. Reason: %s\n", path, strerror(errno));
-                close(fd);
-                return -7;
-            } 
-            else if (written > 0) 
-            {
-                pos += written;
-            } 
-            else 
-            {
-                break;
-            }
-        }
-        close(output);
-        if (verbose) printf("Produced tile: %s\n", path);
-    }
-
-    munmap(buf, st.st_size);
-    close(fd);
-    num_render++;
-    return pos;
-}
-
-void display_rate(struct timeval start, struct timeval end, int num) 
-{
-    int d_s, d_us;
-    float sec;
-
-    d_s  = end.tv_sec  - start.tv_sec;
-    d_us = end.tv_usec - start.tv_usec;
-
-    sec = d_s + d_us / 1000000.0;
-
-    printf("Converted %d tiles in %.2f seconds (%.2f tiles/s)\n", num, sec, num / sec);
-    fflush(NULL);
-}
-
-static void descend(const char *search, int zoomdone)
-{
-    DIR *tiles = opendir(search);
-    struct dirent *entry;
-    char path[PATH_MAX];
-    int this_is_zoom = -1;
-
-    if (!tiles) 
-    {
-        //fprintf(stderr, "Unable to open directory: %s\n", search);
-        return;
-    }
-
-    while ((entry = readdir(tiles))) 
-    {
-        struct stat b;
-        char *p;
-
-        //check_load();
-
-        if (!strcmp(entry->d_name, ".") || !strcmp(entry->d_name, ".."))
-            continue;
-
-        if (this_is_zoom == -1)
-        {
-            if (!zoomdone && isdigit(*(entry->d_name)) && atoi(entry->d_name) >= 0 && atoi(entry->d_name) <= MAXZOOM)
-            {
-                this_is_zoom = 1;
-            }
-            else
-            {
-                this_is_zoom = 0;
-            }
-        }
-
-        if (this_is_zoom)
-        {
-            int z = atoi(entry->d_name);
-            if (z<0 || z>MAXZOOM || !zoom[z]) continue;
-        }
-
-        snprintf(path, sizeof(path), "%s/%s", search, entry->d_name);
-        if (stat(path, &b))
-            continue;
-        if (S_ISDIR(b.st_mode)) {
-            descend(path, zoomdone || this_is_zoom);
-            continue;
-        }
-        p = strrchr(path, '.');
-        if (p && !strcmp(p, ".meta")) expand_meta(path);
-    }
-    closedir(tiles);
-}
-
-
-void usage()
-{
-    fprintf(stderr, "Usage: m2t [-m mode] [-b bbox] [-z zoom] sourcedir targetdir\n");
-    fprintf(stderr, "Convert .meta files found in source dir to .png in target dir,\n");
-    fprintf(stderr, "using the standard \"hash\" type directory (5-level) for meta\n");
-    fprintf(stderr, "tiles and the z/x/y.png structure (3-level) for output.\n");
-}
-
-int handle_bbox(char *arg)
-{
-    char *token = strtok(arg, ",");
-    int bbi = 0;
-    while(token && bbi<4)
-    {
-        bbox[bbi++] = atof(token);
-        token = strtok(NULL, ",");
-    }
-    return (bbi==4 && token==NULL);
-}
-
-int handle_zoom(char *arg)
-{
-    char *token = strtok(arg, ",");
-    while(token)
-    {
-        int fromz = atoi(token);
-        int toz = atoi(token);
-        char *minus = strchr(token, '-');
-        if (minus)
-        {
-            toz = atoi(minus+1);
-        }
-        if (fromz<0 || toz<0 || fromz>MAXZOOM || toz>MAXZOOM || toz<fromz || !isdigit(*token)) return 0;
-        for (int i=fromz; i<=toz; i++) zoom[i]=1;
-        token = strtok(NULL, ",");
-    }
-    return 1;
-}
-
-int main(int argc, char **argv)
-{
-    int c;
-    for (int i=0; i<=MAXZOOM; i++) zoom[i]=0;
-    int zoomset = 0;
-    while (1) {
-        int option_index = 0;
-        static struct option long_options[] = 
-        {
-            {"verbose", 0, 0, 'v'},
-            {"help", 0, 0, 'h'},
-            {"bbox", 1, 0, 'b'},
-            {"mode", 1, 0, 'm'},
-            {"zoom", 1, 0, 'z'},
-            {0, 0, 0, 0}
-        };
-
-        c = getopt_long(argc, argv, "vhb:m:z:", long_options, &option_index);
-        if (c == -1)
-            break;
-
-        switch (c) 
-        {
-            case 'v':
-                verbose=1;
-                break;
-            case 'h':
-                usage();
-                return -1;
-            case 'b':
-                if (!handle_bbox(optarg))
-                {
-                    fprintf(stderr, "invalid bbox argument - must be of the form east,south,west,north\n");
-                    return -1;
-                }
-                break;
-            case 'z':
-                zoomset = 1;
-                if (!handle_zoom(optarg))
-                {
-                    fprintf(stderr, "invalid zoom argument - must be of the form zoom or z0,z1,z2... or z0-z1\n");
-                    return -1;
-                }
-                break;
-            case 'm': 
-                if (!strcmp(optarg, "glob"))
-                {
-                    mode = MODE_GLOB;
-                }
-                else if (!strcmp(optarg, "stat"))
-                {
-                    mode = MODE_STAT;
-                    fprintf(stderr, "mode=stat not yet implemented\n");
-                    return -1;
-                }
-                else
-                {
-                    fprintf(stderr, "mode argument must be either 'glob' or 'stat'\n");
-                    return -1;
-                }
-                break;
-            default:
-                fprintf(stderr, "unhandled char '%c'\n", c);
-                break;
-        }
-    }
-
-    if (!zoomset) for (int i=0; i<=MAXZOOM; i++) zoom[i]=1;
-
-    if (optind >= argc-1)
-    {
-        usage();
-        return -1;
-    }
-
-    source=argv[optind++];
-    target=argv[optind++];
-
-    fprintf(stderr, "Converting tiles from directory %s to directory %s\n", source, target);
-
-    gettimeofday(&start, NULL);
-
-    descend(source, 0);
-
-    gettimeofday(&end, NULL);
-    printf("\nTotal for all tiles converted\n");
-    printf("Meta tiles converted: ");
-    display_rate(start, end, num_render);
-    printf("Total tiles converted: ");
-    display_rate(start, end, num_render * METATILE * METATILE);
-
-    return 0;
-}