3 files changed, 33 insertions(+), 7 deletions(-)

M README.md
M main.c
M test.c

@@ 7,7 7,3 @@ the `test.c` file.
 
 * `make` - build the tool
 * `make test` - build the test program
-
-## todo
-
-* add a way to include only parts of the BMP

@@ 50,15 50,24 @@ void dosmall(const char *glyph) {
 
 int main(int argc, const char *argv[]) {
 	printf(
+
 		"#ifndef UNIFONT_H\n"
 		"#define UNIFONT_H\n"
-		"const uint16_t unifont[65536][16] = {\n"
+		"#ifdef __\n"
+		"static uint16_t __[256][16] = {\n"
 	);
 
 	uint32_t codepoint;
 	char glyph[65] = {0};
 	for (int i=0; scanf("%x:%s\n", &codepoint, glyph) == 2; ++i) {
-		fprintf(stderr, "%x:%s\n", codepoint, glyph);
+		if (i % 256 == 0)
+			printf(
+				"};\n"
+				"#endif\n"
+				"#if defined(UNIFONT_GROUP_%d) || defined(UNIFONT_GROUP_ALL)\n"
+				"static uint16_t group_%d[256][16] = {\n",
+				i / 256, i / 256
+			);
 
 		printf("\t{");
 		if (strlen(glyph) == 32)


@@ 70,4 79,17 @@ int main(int argc, const char *argv[]) {
 		memset(glyph, 0, 65);
 	}
 	printf("};\n#endif\n");
+
+	printf("uint16_t *unifont[256] = {\n");
+	for (int i=0; i < 256; ++i)
+		printf(
+			"#if defined(UNIFONT_GROUP_%d) || defined(UNIFONT_GROUP_ALL)\n"
+			"&group_%d[0][0],\n"
+			"#else\n"
+			"NULL,\n"
+			"#endif\n",
+			i, i
+		);
+
+	printf("};\n#endif\n");
 }

@@ 1,10 1,18 @@
 #include <stdint.h>
 #include <stdio.h>
+
+#define UNIFONT_GROUP_0
+#define UNIFONT_GROUP_1
 #include "unifont.h"
 
 static
 void printchar(uint32_t c) {
-	const uint16_t *bmp = unifont[c];
+	const uint16_t *page = unifont[c/256];
+	if (page == NULL) {
+		printf("page containing character U+%x isn't included.\n", c);
+		return;
+	}
+	const uint16_t *bmp = &unifont[c/256][c%256 * 16];
 
 	for (int i=0; i < 16; ++i) {
 		uint16_t r = bmp[i];