shithub: fnt

ref: 0505001c7c8b23eb35649b6426fcb112c8160e5e
dir: /unix/test.c/

#include <err.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "otf.h"

typedef struct Image Image;

struct Image {
	int w;
	int h;
	u8int *b;
};

static void
fit(u8int *b, int bw, int bh, Image *im, int maxh, int *x, int *y, int gap)
{
	int d;

	if((bw-*x) < im->w+gap){
		*y += maxh + gap;
		*x = gap;
	}
	if((bh-*y) < maxh+gap)
		return;
	for(d = 0; d < im->h; d++)
		memcpy(b + (*y + d)*bw + *x, im->b + d*im->w, im->w);
	*x += im->w + gap;
}

static void
dumpmap(FILE *out, Image *im, int n)
{
#define gap 1
	int total, mid, npix, bw, bh, x, y, i, maxh;
	u8int *b;

	total = 0;
	maxh = 0;
	for(i = 0; i < n; i++){
		if(maxh < im[i].h)
			maxh = im[i].h;
		total += im[i].w;
	}
	mid = total / n;
	npix = (mid+gap)*(maxh+gap)*n;
	bh = sqrt(npix);
	bw = npix/bh;
	bh *= 1.5;
	npix *= 1.5;
	npix += bw*gap;
	if((b = malloc(npix)) == NULL)
		err(1, NULL);

	memset(b, 0xff, npix);
	x = y = gap;
	for(i = 0; i < n; i++)
		fit(b, bw, bh, im+i, maxh, &x, &y, gap);
	fprintf(out, "%11s %11d %11d %11d %11d ", "k8", 0, 0, bw, y+maxh+gap);
	fwrite(b, 1, bw*(y+maxh+gap), out);
	free(b);
}

static char *argv0;

#define	ARGBEGIN	for((argv0? 0: (argv0=*argv)),argv++,argc--;\
			    argv[0] && argv[0][0]=='-' && argv[0][1];\
			    argc--, argv++) {\
				char *_args, *_argt;\
				int _argc;\
				_args = &argv[0][1];\
				if(_args[0]=='-' && _args[1]==0){\
					argc--; argv++; break;\
				}\
				_argc = 0;\
				while((_argc = *_args++) != 0)\
				switch(_argc)
#define	ARGEND		(void)_argt; (void)_argc; (void)_args;}(void)argv; (void)argc;
#define	ARGF()		(_argt=_args, _args="",\
				(*_argt? _argt: argv[1]? (argc--, *++argv): 0))
#define	ARGC()		_argc

#define	EARGF(x)		(_argt=_args, _args="",\
				(*_argt? _argt: argv[1]? (argc--, *++argv): (x, (char*)0)))

static int
otfseek(void *aux, int off, int whence)
{
	if(fseek(aux, off, whence) < 0)
		return -1;
	return ftell(aux);
}

static int
otfread(void *aux, void *dst, int sz)
{
	return fread(dst, 1, sz, aux);
}

static void
usage(void)
{
	fprintf(stderr, "usage: %s [-g GLYPH_ID] [-G] [-i N] [-s PX] font.otf ...\n", argv0);
	fprintf(stderr, " -g: specifies a single glyph id\n");
	fprintf(stderr, " -G: print out glyph ids, only ones that can be drawn atm (no compound yet)\n");
	fprintf(stderr, " -p: draw (of size in pixels per em) and write the image to stdout\n");
	exit(1);
}

int
main(int argc, char **argv)
{
	int i, gi, G, ppem;
	Otfile in, out;
	Otf *o;

	gi = -1;
	G = 0;
	ppem = 0;
	ARGBEGIN{
	case 'g':
		gi = strtol(EARGF(usage()), NULL, 0);
		break;
	case 'G':
		G++;
		break;
	case 'p':
		ppem = strtol(EARGF(usage()), NULL, 0);
		break;
	default:
		usage();
	}ARGEND

	in.seek = otfseek;
	in.read = otfread;
	out.print = (void*)fprintf;

	out.aux = fdopen(1, "wb");
	for(i = 0; i < argc; i++){
		if((in.aux = fopen(argv[i], "rb")) == NULL)
			err(1, "%s", argv[i]);
		if((o = otfopen(&in)) == NULL)
			errx(1, "%s: %s", argv[i], otferrstr());
		if(ppem <= 0)
			fprintf(out.aux, "%s\n", argv[i]);
		if(G && gi < 0){
			int i, n = otfglyfnum(o);
			Image *im = ppem > 0 ? calloc(n, sizeof(*im)) : NULL;
			for(i = 0; i < n; i++){
				Glyf *g = otfglyf(o, i);
				if(g == NULL)
					errx(1, "glyph %d: %s", i, otferrstr());
				if(ppem > 0 && g->simple != NULL && g->numberOfContours > 0){
					im[i].b = otfdrawglyf(g, ppem, &im[i].w, &im[i].h);
					if(im[i].b == NULL)
						errx(1, "glyph %d: %s", i, otferrstr());
				}else if(ppem <= 0){
					fprintf(out.aux, "%d (%s):\n", i, g->simple ? "simple" : "component");
					print_Glyf(&out, indentΔ, o, g);
				}
				free(g);
			}
			if(ppem > 0){
				dumpmap(out.aux, im, n);
				for(i = 0; i < n; i++)
					free(im[i].b);
				free(im);
			}
		}else if(gi < 0){
			otfprint(o, &out, indentΔ);
		}else{
			int n = otfglyfnum(o);
			if(gi >= n)
				errx(1, "glyph %d out of range, max %d", gi, n-1);
			Glyf *g = otfglyf(o, gi);
			if(g == NULL){
				errx(1, "glyph %d: %s", gi, otferrstr());
			}else if(ppem > 0){
				if(g->component != NULL)
					errx(1, "glyph %d: component", gi);
				else{
					Image im;
					im.b = otfdrawglyf(g, ppem, &im.w, &im.h);
					if(im.b == NULL)
						errx(1, "glyph %d: %s", gi, otferrstr());
					fprintf(out.aux, "%11s %11d %11d %11d %11d ", "k8", 0, 0, im.w, im.h);
					fwrite(im.b, 1, im.w*im.h, out.aux);
					free(im.b);
				}
			}else{
				fprintf(out.aux, "\n%d:\n", gi);
				print_Glyf(&out, indentΔ, o, g);
			}
		}
		otfclose(o);
		fclose(in.aux);
	}
	fclose(out.aux);

	return 0;
}