Add an option to give specific layer names to specific input files

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.9.6
+
+* Add an option to give specific layer names to specific input files
+
 ## 1.9.5
 
 * Remove temporary files that were accidentally left behind

README.md

@@ -58,8 +58,9 @@ Options
 ### Naming
 
  * -l _name_ or --layer=_name_: Layer name (default "file" if source is file.json or output is file.mbtiles). If there are multiple input files
-   specified, the files are all merged into the single named layer.
+   specified, the files are all merged into the single named layer, even if they try to specify individual names with -L.
- * -n _name_ or --name=_name_: Human-readable name (default file.json)
+ * -L _name_:_file.json_ or --named-layer=_name_:_file.json_: Specify layer names for individual files. If your shell supports it, you can use a subshell redirect like -L _name_:<(cat dir/*.json) to specify a layer name for the output of streamed input.
+ * -n _name_ or --name=_name_: Human-readable name for the tileset (default file.json)
 
 ### File control
 

geojson.c

@@ -64,6 +64,12 @@ static int mb_geometry[GEOM_TYPES] = {
 	VT_POINT, VT_POINT, VT_LINE, VT_LINE, VT_POLYGON, VT_POLYGON,
 };
 
+struct source {
+	char *layer;
+	char *file;
+	struct source *next;
+};
+
 int CPUS;
 int TEMP_FILES;
 
@@ -1084,7 +1090,7 @@ void start_parsing(int fd, FILE *fp, long long offset, long long len, volatile i
 	}
 }
 
-int read_json(int argc, char **argv, char *fname, const char *layername, int maxzoom, int minzoom, int basezoom, double basezoom_marker_width, sqlite3 *outdb, struct pool *exclude, struct pool *include, int exclude_all, double droprate, int buffer, const char *tmpdir, double gamma, int *prevent, int *additional, int read_parallel, int forcetable) {
+int read_json(int argc, struct source **sourcelist, char *fname, const char *layername, int maxzoom, int minzoom, int basezoom, double basezoom_marker_width, sqlite3 *outdb, struct pool *exclude, struct pool *include, int exclude_all, double droprate, int buffer, const char *tmpdir, double gamma, int *prevent, int *additional, int read_parallel, int forcetable) {
 	int ret = EXIT_SUCCESS;
 
 	struct reader reader[CPUS];
@@ -1219,10 +1225,10 @@ int read_json(int argc, char **argv, char *fname, const char *layername, int max
 			reading = "standard input";
 			fd = 0;
 		} else {
-			reading = argv[source];
+			reading = sourcelist[source]->file;
-			fd = open(argv[source], O_RDONLY);
+			fd = open(sourcelist[source]->file, O_RDONLY);
 			if (fd < 0) {
-				perror(argv[source]);
+				perror(sourcelist[source]->file);
 				continue;
 			}
 		}
@@ -1250,7 +1256,7 @@ int read_json(int argc, char **argv, char *fname, const char *layername, int max
 		} else {
 			FILE *fp = fdopen(fd, "r");
 			if (fp == NULL) {
-				perror(argv[source]);
+				perror(sourcelist[source]->file);
 				close(fd);
 				continue;
 			}
@@ -1388,9 +1394,13 @@ int read_json(int argc, char **argv, char *fname, const char *layername, int max
 				exit(EXIT_FAILURE);
 			}
 		} else {
-			char *src = argv[i];
+			char *src;
 			if (argc < 1) {
 				src = fname;
+			} else if (sourcelist[i]->layer != NULL) {
+				src = sourcelist[i]->layer;
+			} else {
+				src = sourcelist[i]->file;
 			}
 
 			char *trunc = layernames[i] = malloc(strlen(src) + 1);
@@ -2113,6 +2123,9 @@ int main(int argc, char **argv) {
 	int buffer = 5;
 	const char *tmpdir = "/tmp";
 
+	int nsources = 0;
+	struct source *sources = NULL;
+
 	struct pool exclude, include;
 	pool_init(&exclude, 0);
 	pool_init(&include, 0);
@@ -2127,6 +2140,7 @@ int main(int argc, char **argv) {
 	static struct option long_options[] = {
 		{"name", required_argument, 0, 'n'},
 		{"layer", required_argument, 0, 'l'},
+		{"named-layer", required_argument, 0, 'L'},
 		{"maximum-zoom", required_argument, 0, 'z'},
 		{"minimum-zoom", required_argument, 0, 'Z'},
 		{"base-zoom", required_argument, 0, 'B'},
@@ -2166,7 +2180,7 @@ int main(int argc, char **argv) {
 		{0, 0, 0, 0},
 	};
 
-	while ((i = getopt_long(argc, argv, "n:l:z:Z:B:d:D:m:o:x:y:r:b:t:g:p:a:XfFqvP", long_options, NULL)) != -1) {
+	while ((i = getopt_long(argc, argv, "n:l:z:Z:B:d:D:m:o:x:y:r:b:t:g:p:a:XfFqvPL:", long_options, NULL)) != -1) {
 		switch (i) {
 		case 0:
 			break;
@@ -2179,6 +2193,32 @@ int main(int argc, char **argv) {
 			layer = optarg;
 			break;
 
+		case 'L':
+			{
+				char *cp = strchr(optarg, ':');
+				if (cp == NULL || cp == optarg) {
+					fprintf(stderr, "%s: -L requires layername:file\n", argv[0]);
+					exit(EXIT_FAILURE);
+				}
+				struct source *src = malloc(sizeof(struct source));
+				if (src == NULL) {
+					perror("Out of memory");
+					exit(EXIT_FAILURE);
+				}
+
+				src->layer = strdup(optarg);
+				src->file = strdup(cp + 1);
+				if (src->layer == NULL || src->file == NULL) {
+					perror("Out of memory");
+					exit(EXIT_FAILURE);
+				}
+				src->layer[cp - optarg] = '\0';
+				src->next = sources;
+				sources = src;
+				nsources++;
+			}
+			break;
+
 		case 'z':
 			maxzoom = atoi(optarg);
 			break;
@@ -2315,7 +2355,7 @@ int main(int argc, char **argv) {
 			break;
 
 		default:
-			fprintf(stderr, "Usage: %s -o out.mbtiles [-n name] [-l layername] [-z maxzoom] [-Z minzoom] [-B basezoom] [-d detail] [-D lower-detail] [-m min-detail] [-x excluded-field ...] [-y included-field ...] [-X] [-r droprate] [-b buffer] [-t tmpdir] [-a rco] [-p sfkld] [-q] [-P] [file.json ...]\n", argv[0]);
+			fprintf(stderr, "Usage: %s -o out.mbtiles [-n name] [-l source] [-z maxzoom] [-Z minzoom] [-B basezoom] [-d detail] [-D lower-detail] [-m min-detail] [-x excluded-field ...] [-y included-field ...] [-X] [-r droprate] [-b buffer] [-t tmpdir] [-a rco] [-p sfkld] [-q] [-P] [file.json ...]\n", argv[0]);
 			exit(EXIT_FAILURE);
 		}
 	}
@@ -2368,7 +2408,27 @@ int main(int argc, char **argv) {
 	sqlite3 *outdb = mbtiles_open(outdir, argv, forcetable);
 	int ret = EXIT_SUCCESS;
 
-	ret = read_json(argc - optind, argv + optind, name ? name : outdir, layer, maxzoom, minzoom, basezoom, basezoom_marker_width, outdb, &exclude, &include, exclude_all, droprate, buffer, tmpdir, gamma, prevent, additional, read_parallel, forcetable);
+	for (i = optind; i < argc; i++) {
+		struct source *src = malloc(sizeof(struct source));
+		if (src == NULL) {
+			perror("Out of memory");
+			exit(EXIT_FAILURE);
+		}
+
+		src->layer = NULL;
+		src->file = argv[i];
+		src->next = sources;
+		sources = src;
+		nsources++;
+	}
+
+	struct source *sourcelist[nsources];
+	i = nsources - 1;
+	for (; sources != NULL; sources = sources->next) {
+		sourcelist[i--] = sources;
+	}
+
+	ret = read_json(nsources, sourcelist, name ? name : outdir, layer, maxzoom, minzoom, basezoom, basezoom_marker_width, outdb, &exclude, &include, exclude_all, droprate, buffer, tmpdir, gamma, prevent, additional, read_parallel, forcetable);
 
 	mbtiles_close(outdb, argv);
 

man/tippecanoe.1

@@ -59,48 +59,51 @@ it encounters.
 .SS Naming
 .RS
 .IP \(bu 2
-\-l \fIname\fP: Layer name (default "file" if source is file.json or output is file.mbtiles). If there are multiple input files
+\-l \fIname\fP or \-\-layer=\fIname\fP: Layer name (default "file" if source is file.json or output is file.mbtiles). If there are multiple input files
-specified, the files are all merged into the single named layer.
+specified, the files are all merged into the single named layer, even if they try to specify individual names with \-L.
 .IP \(bu 2
-\-n \fIname\fP: Human\-readable name (default file.json)
+\-L \fIname\fP:\fIfile.json\fP or \-\-named\-layer=\fIname\fP:\fIfile.json\fP: Specify layer names for individual files. If your shell supports it, you can use a subshell redirect like \-L \fIname\fP:<(cat dir/*.json) to specify a layer name for the output of streamed input.
+.IP \(bu 2
+\-n \fIname\fP or \-\-name=\fIname\fP: Human\-readable name for the tileset (default file.json)
 .RE
 .SS File control
 .RS
 .IP \(bu 2
-\-o \fIfile\fP\&.mbtiles: Name the output file.
+\-o \fIfile\fP\&.mbtiles or \-\-output=\fIfile\fP\&.mbtiles: Name the output file.
 .IP \(bu 2
-\-f: Delete the mbtiles file if it already exists instead of giving an error
+\-f or \-\-force: Delete the mbtiles file if it already exists instead of giving an error
 .IP \(bu 2
-\-F: Proceed (without deleting existing data) if the metadata or tiles table already exists
+\-F or \-\-allow\-existing: Proceed (without deleting existing data) if the metadata or tiles table already exists
 or if metadata fields can't be set
 .IP \(bu 2
-\-t \fIdirectory\fP: Put the temporary files in \fIdirectory\fP\&.
+\-t \fIdirectory\fP or \-\-temporary\-directory=\fIdirectory\fP: Put the temporary files in \fIdirectory\fP\&.
 .IP \(bu 2
-\-P: Use multiple threads to read different parts of each input file at once.
+\-P or \-\-read\-parallel: Use multiple threads to read different parts of each input file at once.
 This will only work if the input is line\-delimited JSON with each Feature on its
-own line, because it knows nothing of the top\-level structure around the Features.
+own line, because it knows nothing of the top\-level structure around the Features. Spurious "EOF" error
+messages may result otherwise.
 Performance will be better if the input is a named file that can be mapped into memory
 rather than a stream that can only be read sequentially.
 .RE
 .SS Zoom levels and resolution
 .RS
 .IP \(bu 2
-\-z \fIzoom\fP: Maxzoom: the highest zoom level for which tiles are generated (default 14)
+\-z \fIzoom\fP or \-\-maximum\-zoom=\fIzoom\fP: Maxzoom: the highest zoom level for which tiles are generated (default 14)
 .IP \(bu 2
-\-Z \fIzoom\fP: Minzoom: the lowest zoom level for which tiles are generated (default 0)
+\-Z \fIzoom\fP or \-\-minimum\-zoom=\fIzoom\fP: Minzoom: the lowest zoom level for which tiles are generated (default 0)
 .IP \(bu 2
-\-B \fIzoom\fP: Base zoom, the level at and above which all points are included in the tiles (default maxzoom).
+\-B \fIzoom\fP or \-\-base\-zoom=\fIzoom\fP: Base zoom, the level at and above which all points are included in the tiles (default maxzoom).
 If you use \-Bg, it will guess a zoom level that will keep at most 50,000 features in the densest tile.
 You can also specify a marker\-width with \-Bg\fIwidth\fP to allow fewer features in the densest tile to
 compensate for the larger marker, or \-Bf\fInumber\fP to allow at most \fInumber\fP features in the densest tile.
 .IP \(bu 2
-\-d \fIdetail\fP: Detail at max zoom level (default 12, for tile resolution of 4096)
+\-d \fIdetail\fP or \-\-full\-detail=\fIdetail\fP: Detail at max zoom level (default 12, for tile resolution of 4096)
 .IP \(bu 2
-\-D \fIdetail\fP: Detail at lower zoom levels (default 12, for tile resolution of 4096)
+\-D \fIdetail\fP or \-\-low\-detail=\fIdetail\fP: Detail at lower zoom levels (default 12, for tile resolution of 4096)
 .IP \(bu 2
-\-m \fIdetail\fP: Minimum detail that it will try if tiles are too big at regular detail (default 7)
+\-m \fIdetail\fP or \-\-minimum\-detail=\fIdetail\fP: Minimum detail that it will try if tiles are too big at regular detail (default 7)
 .IP \(bu 2
-\-b \fIpixels\fP: Buffer size where features are duplicated from adjacent tiles. Units are "screen pixels"\-\-1/256th of the tile width or height. (default 5)
+\-b \fIpixels\fP or \-\-buffer=\fIpixels\fP: Buffer size where features are duplicated from adjacent tiles. Units are "screen pixels"\-\-1/256th of the tile width or height. (default 5)
 .RE
 .PP
 All internal math is done in terms of a 32\-bit tile coordinate system, so 1/(2 of the size of Earth,
@@ -109,51 +112,51 @@ resolution is obtained than by using a smaller \fImaxzoom\fP or \fIdetail\fP\&.
 .SS Properties
 .RS
 .IP \(bu 2
-\-x \fIname\fP: Exclude the named properties from all features
+\-x \fIname\fP or \-\-exclude=\fIname\fP: Exclude the named properties from all features
 .IP \(bu 2
-\-y \fIname\fP: Include the named properties in all features, excluding all those not explicitly named
+\-y \fIname\fP or \-\-include=\fIname\fP: Include the named properties in all features, excluding all those not explicitly named
 .IP \(bu 2
-\-X: Exclude all properties and encode only geometries
+\-X or \-\-exclude\-all: Exclude all properties and encode only geometries
 .RE
 .SS Point simplification
 .RS
 .IP \(bu 2
-\-r \fIrate\fP: Rate at which dots are dropped at zoom levels below basezoom (default 2.5).
+\-r \fIrate\fP or \-\-drop\fIrate=\fPrate_: Rate at which dots are dropped at zoom levels below basezoom (default 2.5).
 If you use \-rg, it will guess a drop rate that will keep at most 50,000 features in the densest tile.
 You can also specify a marker\-width with \-rg\fIwidth\fP to allow fewer features in the densest tile to
 compensate for the larger marker, or \-rf\fInumber\fP to allow at most \fInumber\fP features in the densest tile.
 .IP \(bu 2
-\-g \fIgamma\fP: Rate at which especially dense dots are dropped (default 0, for no effect). A gamma of 2 reduces the number of dots less than a pixel apart to the square root of their original number.
+\-g \fIgamma\fP or \-\-gamma=\fIgamma\fP: Rate at which especially dense dots are dropped (default 0, for no effect). A gamma of 2 reduces the number of dots less than a pixel apart to the square root of their original number.
 .RE
 .SS Doing more
 .RS
 .IP \(bu 2
-\-ac: Coalesce adjacent line and polygon features that have the same properties
+\-ac or \-\-coalesce: Coalesce adjacent line and polygon features that have the same properties
 .IP \(bu 2
-\-ar: Try reversing the directions of lines to make them coalesce and compress better
+\-ar or \-\-reverse: Try reversing the directions of lines to make them coalesce and compress better
 .IP \(bu 2
-\-ao: Reorder features to put ones with the same properties in sequence, to try to get them to coalesce
+\-ao or \-\-reorder: Reorder features to put ones with the same properties in sequence, to try to get them to coalesce
 .IP \(bu 2
-\-al: Let "dot" dropping at lower zooms apply to lines too
+\-al or \-\-drop\-lines: Let "dot" dropping at lower zooms apply to lines too
 .RE
 .SS Doing less
 .RS
 .IP \(bu 2
-\-ps: Don't simplify lines
+\-ps or \-\-no\-line\-simplification: Don't simplify lines
 .IP \(bu 2
-\-pS: Don't simplify lines at maxzoom (but do simplify at lower zooms)
+\-pS or \-\-simplify\-only\-low\-zooms: Don't simplify lines at maxzoom (but do simplify at lower zooms)
 .IP \(bu 2
-\-pf: Don't limit tiles to 200,000 features
+\-pf or \-\-no\-feature\-limit: Don't limit tiles to 200,000 features
 .IP \(bu 2
-\-pk: Don't limit tiles to 500K bytes
+\-pk or \-\-no\-tile\-size\-limit: Don't limit tiles to 500K bytes
 .IP \(bu 2
-\-pd: Dynamically drop some fraction of features from large tiles to keep them under the 500K size limit. It will probably look ugly at the tile boundaries.
+\-pd or \-\-force\-feature\-limit: Dynamically drop some fraction of features from large tiles to keep them under the 500K size limit. It will probably look ugly at the tile boundaries.
 .IP \(bu 2
-\-pi: Preserve the original input order of features as the drawing order instead of ordering geographically. (This is implemented as a restoration of the original order at the end, so that dot\-dropping is still geographic, which means it also undoes \-ao).
+\-pi or \-\-preserve\-input\-order: Preserve the original input order of features as the drawing order instead of ordering geographically. (This is implemented as a restoration of the original order at the end, so that dot\-dropping is still geographic, which means it also undoes \-ao).
 .IP \(bu 2
-\-pp: Don't split complex polygons (over 700 vertices after simplification) into multiple features.
+\-pp or \-\-no\-polygon\-splitting: Don't split complex polygons (over 700 vertices after simplification) into multiple features.
 .IP \(bu 2
-\-q: Work quietly instead of reporting progress
+\-q or \-\-quiet: Work quietly instead of reporting progress
 .RE
 .SH Example
 .PP

version.h

@@ -1 +1 @@
-#define VERSION "tippecanoe v1.9.5\n"
+#define VERSION "tippecanoe v1.9.6\n"