mirror of
https://github.com/zyphlar/bdf2c.git
synced 2024-03-08 13:47:46 +00:00
Convert bdf files to stdout.
This commit is contained in:
Johns
parent
a2cc1f4987
commit
d1a9fe2adc
1
.gitignore
vendored
1
.gitignore
vendored
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@ -1,6 +1,7 @@
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# gitignore(5) file
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*.[oa]
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*~
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*.swp
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# generated files
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bdf2c
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15
bdf2c.1
15
bdf2c.1
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@ -7,18 +7,29 @@ bdf2c \- converts bdf font files into C include files
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.SH SYNOPSIS
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.B bdf2c
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.I [-?|-h]
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.I [-b file]
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.I [-c]
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.I [-C file]
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.I [-b]
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.SH DESCRIPTION
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bdf2c creates C source and C header file from bdf font files. Which can be
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used to embed fonts into the executable.
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.SH OPTIONS
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.TP
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.B -?|-h
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Show help options.
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Show short help and exit.
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.TP
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.B -c
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Create C header file on stdout.
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.TP
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.B -C file
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Creates C header file 'file'.
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.TP
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.B -b file
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Read and convert bdf font 'file'.
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.SH AUTHOR
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Johns (2009) <johns98@gmx.net>.
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231
bdf2c.c
231
bdf2c.c
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@ -20,10 +20,20 @@
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/// $Id$
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//////////////////////////////////////////////////////////////////////////////
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///
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/// @mainpage
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/// bdf2c - converts bdf font files into C include files.
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///
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/// The Bitmap Distribution Format (BDF) is a file format for
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/// storing bitmap fonts. The content is presented as a text file
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/// that is intended to be human and computer readable.
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///
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <limits.h>
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#include <errno.h>
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#define VERSION "1"
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@ -37,7 +47,18 @@ void CreateFontHeaderFile(FILE * out)
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{
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register int i;
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fprintf(out, "// (c) 2009 Johns, License: AGPLv3\n");
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fprintf(out, "// (c) 2009 Johns, License: AGPLv3\n\n");
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fprintf(out, "\t/// bitmap font structure\n"
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"struct bitmap_font {\n"
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"\tunsigned char Width;\t\t///< max. character width\n"
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"\tunsigned char Height;\t\t///< character height\n"
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"\tunsigned short Chars;\t\t///< number of characters in font\n"
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"\tunsigned char *Widths;\t\t///< width of each character\n"
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"\tunsigned short *Index;\t\t///< encoding to character index\n"
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"\tunsigned char *Bitmap;\t\t///< bitmap of each character\n"
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"};\n\n");
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fprintf(out, "\t/// @{ defines to have human readable font files\n");
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for (i = 0; i < 256; ++i) {
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fprintf(out, "#define %c%c%c%c%c%c%c%c 0x%02X\n",
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(i & 0x80) ? 'X' : '_', (i & 0x40) ? 'X' : '_',
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@ -45,10 +66,74 @@ void CreateFontHeaderFile(FILE * out)
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(i & 0x08) ? 'X' : '_', (i & 0x04) ? 'X' : '_',
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(i & 0x02) ? 'X' : '_', (i & 0x01) ? 'X' : '_', i);
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}
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fprintf(out, "\t/// @}\n");
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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// Print header for c file.
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//
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void Header(FILE * out, const char *name)
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{
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fprintf(out,
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"// Created from bdf2c Version %s, (c) 2009 by Johns\n"
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"//\tLicense AGPLv3: GNU Affero General Public License version 3\n"
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"\n#include \"font.h\"\n\n", VERSION);
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fprintf(out,
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"\t/// character bitmap for each encoding\n"
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"static const unsigned char __%s_bitmap__[] = {\n", name);
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}
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//
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// Print width table for c file
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//
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void WidthTable(FILE * out, const char *name, const unsigned *width_table,
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int chars)
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{
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fprintf(out, "};\n\n");
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fprintf(out,
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"\t/// character width for each encoding\n"
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"static const unsigned char __%s_widths__[] = {\n", name);
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while (chars--) {
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printf("\t%u,\n", *width_table++);
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}
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}
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//
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// Print encoding table for c file
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//
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void EncodingTable(FILE * out, const char *name,
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const unsigned *encoding_table, int chars)
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{
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fprintf(out, "};\n\n");
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fprintf(out,
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"\t/// character encoding for each index entry\n"
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"static const unsigned short __%s_index__[] = {\n", name);
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while (chars--) {
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printf("\t%u,\n", *encoding_table++);
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}
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}
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//
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// Print footer for c file.
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//
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void Footer(FILE * out, const char *name, int width, int height, int chars)
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{
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fprintf(out, "};\n\n");
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fprintf(out, "\t/// bitmap font structure\n"
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"struct bitmap_font %s = {\n", name);
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fprintf(out, "\t.Width %d, .Height %d,\n", width, height);
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fprintf(out, "\t.Chars %d,\n", chars);
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fprintf(out, "\t.Widths __%s_widths__,\n", name);
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fprintf(out, "\t.Index __%s_index__,\n", name);
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fprintf(out, "\t.Bitmap __%s_bitmap__,\n", name);
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fprintf(out, "};\n\n");
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}
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//
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// Read BDF font file.
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//
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@ -56,7 +141,28 @@ void ReadBdf(FILE * bdf)
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{
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char linebuf[1024];
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char *s;
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char *p;
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int fontboundingbox_width;
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int fontboundingbox_height;
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int chars;
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int i;
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int n;
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int scanline;
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char charname[1024];
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int encoding;
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int bbx;
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int bby;
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int bbw;
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int bbh;
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int width;
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unsigned *width_table;
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unsigned *encoding_table;
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const char *name;
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name = "font";
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fontboundingbox_width = 0;
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fontboundingbox_height = 0;
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chars = 0;
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for (;;) {
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if (!fgets(linebuf, sizeof(linebuf), bdf)) { // EOF
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break;
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@ -64,8 +170,126 @@ void ReadBdf(FILE * bdf)
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if (!(s = strtok(linebuf, " \t\n\r"))) { // empty line
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break;
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}
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printf("token:%s\n", s);
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// printf("token:%s\n", s);
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if (!strcasecmp(s, "FONTBOUNDINGBOX")) {
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p = strtok(NULL, " \t\n\r");
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fontboundingbox_width = atoi(p);
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p = strtok(NULL, " \t\n\r");
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fontboundingbox_height = atoi(p);
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} else if (!strcasecmp(s, "CHARS")) {
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p = strtok(NULL, " \t\n\r");
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chars = atoi(p);
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break;
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}
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}
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/*
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printf("%d * %dx%d\n", chars, fontboundingbox_width,
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fontboundingbox_height);
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*/
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if (chars <= 0) {
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fprintf(stderr, "Need to know the number of characters\n");
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exit(-1);
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}
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width_table = malloc(chars * sizeof(*width_table));
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if (!width_table) {
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fprintf(stderr, "Out of memory\n");
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exit(-1);
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}
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encoding_table = malloc(chars * sizeof(*encoding_table));
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if (!encoding_table) {
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fprintf(stderr, "Out of memory\n");
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exit(-1);
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}
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Header(stdout, name);
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scanline = -1;
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n = 0;
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encoding = -1;
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bbx = 0;
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bby = 0;
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bbw = 0;
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bbh = 0;
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width = INT_MIN;
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strcpy(charname, "unknown character");
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for (;;) {
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if (!fgets(linebuf, sizeof(linebuf), bdf)) { // EOF
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break;
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}
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if (!(s = strtok(linebuf, " \t\n\r"))) { // empty line
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break;
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}
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// printf("token:%s\n", s);
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if (!strcasecmp(s, "STARTCHAR")) {
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p = strtok(NULL, " \t\n\r");
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strcpy(charname, p);
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} else if (!strcasecmp(s, "ENCODING")) {
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p = strtok(NULL, " \t\n\r");
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encoding = atoi(p);
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} else if (!strcasecmp(s, "DWIDTH")) {
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p = strtok(NULL, " \t\n\r");
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width = atoi(p);
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} else if (!strcasecmp(s, "BBX")) {
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p = strtok(NULL, " \t\n\r");
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bbw = atoi(p);
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p = strtok(NULL, " \t\n\r");
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bbh = atoi(p);
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p = strtok(NULL, " \t\n\r");
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bbx = atoi(p);
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p = strtok(NULL, " \t\n\r");
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bby = atoi(p);
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} else if (!strcasecmp(s, "BITMAP")) {
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fprintf(stdout, "// %3d $%02x '%s'\n", encoding, encoding,
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charname);
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fprintf(stdout, "//\twidth %d, bbx %d, bby %d, bbw %d, bbh %d\n",
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width, bbx, bby, bbw, bbh);
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if (n == chars) {
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fprintf(stderr, "Too many bitmaps for characters\n");
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exit(-1);
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}
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width_table[n] = width;
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encoding_table[n] = encoding;
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++n;
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scanline = 0;
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} else if (!strcasecmp(s, "ENDCHAR")) {
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scanline = -1;
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} else {
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if (scanline >= 0) {
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p = s;
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fprintf(stdout, "\t");
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while (*p) {
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if (*p <= '9') {
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i = *p - '0';
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} else if (*p <= 'F') {
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i = *p - 'A' + 10;
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} else {
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i = *p - 'a' + 10;
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}
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fprintf(stdout, "%c%c%c%c", (i & 0x08) ? 'X' : '_',
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(i & 0x04) ? 'X' : '_', (i & 0x02) ? 'X' : '_',
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(i & 0x01) ? 'X' : '_');
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++p;
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if (~(p - s) & 1) {
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fprintf(stdout, ",");
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}
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}
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if ((p - s) & 1) { // fill last nibble
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fprintf(stdout, "____,");
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}
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fprintf(stdout, "\n");
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++scanline;
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}
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}
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}
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// Output width table for proportional font.
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WidthTable(stdout, name, width_table, chars);
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// Output encoding table for utf-8 support
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EncodingTable(stdout, name, encoding_table, chars);
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Footer(stdout, name, fontboundingbox_width, fontboundingbox_height, chars);
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}
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//////////////////////////////////////////////////////////////////////////////
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@ -85,8 +309,9 @@ void PrintVersion(void)
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//
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void PrintUsage(void)
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{
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printf("Usage: bdf2c [OPTIONs]\n" "\t-c\tCreate font header on stdout\n"
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printf("Usage: bdf2c [OPTIONs]\n"
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"\t-b\tRead bdf file from stdin\n"
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"\t-c\tCreate font header on stdout\n"
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"\t-C file\tCreate font header file\n");
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printf("\tOnly idiots print usage on stderr\n");
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}
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12
readme.txt
12
readme.txt
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@ -11,3 +11,15 @@ Usage:
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Create font.h, which contains #defines for fonts.
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./bdf2c -b < font.bdf > font.c
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Create font.c which contains the converted bdf font.
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The C file contains:
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Bitmap data for the characters.
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Character width table for proportional font
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Character codes table for utf-8 font
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TODO:
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Proportional fonts (f.e. generated from ttf2bdf) aren't yet supported.
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