1 files changed, 106 insertions, 0 deletions
diff --git a/host/matelight/main.c b/host/matelight/main.c
new file mode 100644
index 0000000..d40ef29
--- /dev/null
+++ b/host/matelight/main.c
@@ -0,0 +1,106 @@
+
+#include "font.h"
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <wchar.h>
+
+/* CAUTION: REQUIRES INPUT TO BE \0-TERMINATED */
+int console_render(char *s, glyph_t **glyph_table, unsigned int glyph_table_size){
+	unsigned int len = strlen(s);
+	char *t = s;
+	wchar_t *buf = calloc(len, sizeof(wchar_t));
+	if(buf == 0){
+		fprintf(stderr, "Cannot calloc() %ld bytes.\n", len*sizeof(wchar_t));
+		goto error;
+	}
+	mbsrtowcs(buf, &t, len, NULL);
+
+	char *gbuf = NULL;
+	unsigned int gbufwidth = 0;
+	unsigned int gbufheight = 0;
+	for(wchar_t *c=buf; *c; c++){
+		if(*c > glyph_table_size){
+			fprintf(stderr, "Error rendering string: Codepoint 0x%lx out of valid range (0-%d).\n", (long int)c, glyph_table_size);
+			goto error;
+		}
+
+		glyph_t *g = glyph_table[*c];
+		if(!g){
+			fprintf(stderr, "Error rendering string: Codepoint 0x%lx not in font.\n", (long int)c);
+			goto error;
+		}
+
+		if(g->height > gbufheight)
+			gbufheight = g->height;
+
+		gbufwidth += g->width;
+	}
+	// For easier rendering on the terminal, round up to multiples of two
+	gbufheight += gbufheight&1;
+
+	unsigned int gbufsize = gbufwidth*gbufheight;
+	gbuf = malloc(gbufsize);
+	if(gbuf == 0){
+		fprintf(stderr, "Cannot malloc() %d bytes.\n", gbufsize);
+		goto error;
+	}
+
+	unsigned int x = 0;
+	for(wchar_t *c=buf; *c; c++){
+		glyph_t *g = glyph_table[*c];
+		render_glyph(g, gbuf, gbufwidth, x, 0);
+		x += g->width;
+	}
+
+	for(unsigned int y=0; y < gbufheight; y++){
+		for(unsigned int x=0; x < gbufwidth; x++){
+			//Da magicks: ▀█▄
+			if(gbuf[y*gbufwidth + x])
+				printf("█");
+			else
+				printf(" ");
+			/*
+			char c1 = gbuf[y*gbufwidth + x];
+			char c2 = gbuf[(y+1)*gbufwidth + x];
+			if(c1 && c2)
+				printf("█");
+			else if(c1 && !c2)
+				printf("▀");
+			else if(!c1 && c2)
+				printf("▄");
+			else
+				printf(" ");
+			*/
+		}
+		printf("\n");
+	}
+	return 0;
+error:
+	free(gbuf);
+	free(buf);
+	return 1;
+}
+
+int main(int argc, char **argv){
+	FILE *f = fopen("unifont.bdf", "r");
+	if(!f){
+		fprintf(stderr, "Error opening font file: %s\n", strerror(errno));
+		return 1;
+	}
+	glyph_t* glyph_table[BLP_SIZE];
+	if(read_bdf(f, glyph_table, BLP_SIZE)){
+		fprintf(stderr, "Error reading font file.\n");
+		return 1;
+	}
+	for(unsigned int i=1; i<argc; i++){
+		if(console_render(argv[i], glyph_table, BLP_SIZE)){
+			fprintf(stderr, "Error rendering text.\n");
+			return 1;
+		}
+		printf("\n");
+	}
+	return 0;
+}