/*- * Copyright (c) 2009, 2014 The FreeBSD Foundation * All rights reserved. * * This software was developed by Ed Schouten under sponsorship from the * FreeBSD Foundation. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD: stable/10/usr.bin/vtfontcvt/vtfontcvt.c 332324 2018-04-09 13:00:03Z emaste $"); #include #include #include #include #include #include #include #include #include #include #include #include #define VFNT_MAPS 4 #define VFNT_MAP_NORMAL 0 #define VFNT_MAP_NORMAL_RH 1 #define VFNT_MAP_BOLD 2 #define VFNT_MAP_BOLD_RH 3 static unsigned int width = 8, wbytes, height = 16; struct glyph { TAILQ_ENTRY(glyph) g_list; SLIST_ENTRY(glyph) g_hash; uint8_t *g_data; unsigned int g_index; }; #define FONTCVT_NHASH 4096 TAILQ_HEAD(glyph_list, glyph); static SLIST_HEAD(, glyph) glyph_hash[FONTCVT_NHASH]; static struct glyph_list glyphs[VFNT_MAPS] = { TAILQ_HEAD_INITIALIZER(glyphs[0]), TAILQ_HEAD_INITIALIZER(glyphs[1]), TAILQ_HEAD_INITIALIZER(glyphs[2]), TAILQ_HEAD_INITIALIZER(glyphs[3]), }; static unsigned int glyph_total, glyph_count[4], glyph_unique, glyph_dupe; struct mapping { TAILQ_ENTRY(mapping) m_list; unsigned int m_char; unsigned int m_length; struct glyph *m_glyph; }; TAILQ_HEAD(mapping_list, mapping); static struct mapping_list maps[VFNT_MAPS] = { TAILQ_HEAD_INITIALIZER(maps[0]), TAILQ_HEAD_INITIALIZER(maps[1]), TAILQ_HEAD_INITIALIZER(maps[2]), TAILQ_HEAD_INITIALIZER(maps[3]), }; static unsigned int mapping_total, map_count[4], map_folded_count[4], mapping_unique, mapping_dupe; static void usage(void) { (void)fprintf(stderr, "usage: vtfontcvt [-w width] [-h height] [-v] normal.bdf [bold.bdf] out.fnt\n"); exit(1); } static void * xmalloc(size_t size) { void *m; if ((m = malloc(size)) == NULL) errx(1, "memory allocation failure"); return (m); } static int add_mapping(struct glyph *gl, unsigned int c, unsigned int map_idx) { struct mapping *mp; struct mapping_list *ml; mapping_total++; mp = xmalloc(sizeof *mp); mp->m_char = c; mp->m_glyph = gl; mp->m_length = 0; ml = &maps[map_idx]; if (TAILQ_LAST(ml, mapping_list) != NULL && TAILQ_LAST(ml, mapping_list)->m_char >= c) errx(1, "Bad ordering at character %u\n", c); TAILQ_INSERT_TAIL(ml, mp, m_list); map_count[map_idx]++; mapping_unique++; return (0); } static int dedup_mapping(unsigned int map_idx) { struct mapping *mp_bold, *mp_normal, *mp_temp; unsigned normal_map_idx = map_idx - VFNT_MAP_BOLD; assert(map_idx == VFNT_MAP_BOLD || map_idx == VFNT_MAP_BOLD_RH); mp_normal = TAILQ_FIRST(&maps[normal_map_idx]); TAILQ_FOREACH_SAFE(mp_bold, &maps[map_idx], m_list, mp_temp) { while (mp_normal->m_char < mp_bold->m_char) mp_normal = TAILQ_NEXT(mp_normal, m_list); if (mp_bold->m_char != mp_normal->m_char) errx(1, "Character %u not in normal font!\n", mp_bold->m_char); if (mp_bold->m_glyph != mp_normal->m_glyph) continue; /* No mapping is needed if it's equal to the normal mapping. */ TAILQ_REMOVE(&maps[map_idx], mp_bold, m_list); free(mp_bold); mapping_dupe++; } return (0); } static struct glyph * add_glyph(const uint8_t *bytes, unsigned int map_idx, int fallback) { struct glyph *gl; int hash; glyph_total++; glyph_count[map_idx]++; hash = fnv_32_buf(bytes, wbytes * height, FNV1_32_INIT) % FONTCVT_NHASH; SLIST_FOREACH(gl, &glyph_hash[hash], g_hash) { if (memcmp(gl->g_data, bytes, wbytes * height) == 0) { glyph_dupe++; return (gl); } } gl = xmalloc(sizeof *gl); gl->g_data = xmalloc(wbytes * height); memcpy(gl->g_data, bytes, wbytes * height); if (fallback) TAILQ_INSERT_HEAD(&glyphs[map_idx], gl, g_list); else TAILQ_INSERT_TAIL(&glyphs[map_idx], gl, g_list); SLIST_INSERT_HEAD(&glyph_hash[hash], gl, g_hash); glyph_unique++; return (gl); } static int add_char(unsigned curchar, unsigned map_idx, uint8_t *bytes, uint8_t *bytes_r) { struct glyph *gl; /* Prevent adding two glyphs for 0xFFFD */ if (curchar == 0xFFFD) { if (map_idx < VFNT_MAP_BOLD) gl = add_glyph(bytes, 0, 1); } else if (curchar >= 0x20) { gl = add_glyph(bytes, map_idx, 0); if (add_mapping(gl, curchar, map_idx) != 0) return (1); if (bytes_r != NULL) { gl = add_glyph(bytes_r, map_idx + 1, 0); if (add_mapping(gl, curchar, map_idx + 1) != 0) return (1); } } return (0); } static int parse_bitmap_line(uint8_t *left, uint8_t *right, unsigned int line, unsigned int dwidth) { uint8_t *p; unsigned int i, subline; if (dwidth != width && dwidth != width * 2) errx(1, "Bitmap with unsupported width %u!\n", dwidth); /* Move pixel data right to simplify splitting double characters. */ line >>= (howmany(dwidth, 8) * 8) - dwidth; for (i = dwidth / width; i > 0; i--) { p = (i == 2) ? right : left; subline = line & ((1 << width) - 1); subline <<= (howmany(width, 8) * 8) - width; if (wbytes == 1) { *p = subline; } else if (wbytes == 2) { *p++ = subline >> 8; *p = subline; } else { errx(1, "Unsupported wbytes %u!\n", wbytes); } line >>= width; } return (0); } static int parse_bdf(FILE *fp, unsigned int map_idx) { char *ln; size_t length; uint8_t bytes[wbytes * height], bytes_r[wbytes * height]; unsigned int curchar = 0, dwidth = 0, i, line; while ((ln = fgetln(fp, &length)) != NULL) { ln[length - 1] = '\0'; if (strncmp(ln, "ENCODING ", 9) == 0) { curchar = atoi(ln + 9); } if (strncmp(ln, "DWIDTH ", 7) == 0) { dwidth = atoi(ln + 7); } if (strncmp(ln, "BITMAP", 6) == 0 && (ln[6] == ' ' || ln[6] == '\0')) { /* * Assume that the next _height_ lines are bitmap * data. ENDCHAR is allowed to terminate the bitmap * early but is not otherwise checked; any extra data * is ignored. */ for (i = 0; i < height; i++) { if ((ln = fgetln(fp, &length)) == NULL) errx(1, "Unexpected EOF!\n"); ln[length - 1] = '\0'; if (strcmp(ln, "ENDCHAR") == 0) { memset(bytes + i * wbytes, 0, (height - i) * wbytes); memset(bytes_r + i * wbytes, 0, (height - i) * wbytes); break; } sscanf(ln, "%x", &line); if (parse_bitmap_line(bytes + i * wbytes, bytes_r + i * wbytes, line, dwidth) != 0) return (1); } if (add_char(curchar, map_idx, bytes, dwidth == width * 2 ? bytes_r : NULL) != 0) return (1); } } return (0); } static void set_width(int w) { if (w <= 0 || w > 128) errx(1, "invalid width %d", w); width = w; wbytes = howmany(width, 8); } static int parse_hex(FILE *fp, unsigned int map_idx) { char *ln, *p; char fmt_str[8]; size_t length; uint8_t *bytes = NULL, *bytes_r = NULL; unsigned curchar = 0, i, line, chars_per_row, dwidth; int rv = 0; while ((ln = fgetln(fp, &length)) != NULL) { ln[length - 1] = '\0'; if (strncmp(ln, "# Height: ", 10) == 0) { if (bytes != NULL) errx(1, "malformed input: Height tag after font data"); height = atoi(ln + 10); } else if (strncmp(ln, "# Width: ", 9) == 0) { if (bytes != NULL) errx(1, "malformed input: Width tag after font data"); set_width(atoi(ln + 9)); } else if (sscanf(ln, "%6x:", &curchar)) { if (bytes == NULL) { bytes = xmalloc(wbytes * height); bytes_r = xmalloc(wbytes * height); } /* ln is guaranteed to have a colon here. */ p = strchr(ln, ':') + 1; chars_per_row = strlen(p) / height; dwidth = width; if (chars_per_row / 2 > (width + 7) / 8) dwidth *= 2; /* Double-width character. */ snprintf(fmt_str, sizeof(fmt_str), "%%%ux", chars_per_row); for (i = 0; i < height; i++) { sscanf(p, fmt_str, &line); p += chars_per_row; if (parse_bitmap_line(bytes + i * wbytes, bytes_r + i * wbytes, line, dwidth) != 0) { rv = 1; goto out; } } if (add_char(curchar, map_idx, bytes, dwidth == width * 2 ? bytes_r : NULL) != 0) { rv = 1; goto out; } } } out: free(bytes); free(bytes_r); return (rv); } static int parse_file(const char *filename, unsigned int map_idx) { FILE *fp; size_t len; int rv; fp = fopen(filename, "r"); if (fp == NULL) { perror(filename); return (1); } len = strlen(filename); if (len > 4 && strcasecmp(filename + len - 4, ".hex") == 0) rv = parse_hex(fp, map_idx); else rv = parse_bdf(fp, map_idx); fclose(fp); return (rv); } static void number_glyphs(void) { struct glyph *gl; unsigned int i, idx = 0; for (i = 0; i < VFNT_MAPS; i++) TAILQ_FOREACH(gl, &glyphs[i], g_list) gl->g_index = idx++; } static int write_glyphs(FILE *fp) { struct glyph *gl; unsigned int i; for (i = 0; i < VFNT_MAPS; i++) { TAILQ_FOREACH(gl, &glyphs[i], g_list) if (fwrite(gl->g_data, wbytes * height, 1, fp) != 1) return (1); } return (0); } static void fold_mappings(unsigned int map_idx) { struct mapping_list *ml = &maps[map_idx]; struct mapping *mn, *mp, *mbase; mp = mbase = TAILQ_FIRST(ml); for (mp = mbase = TAILQ_FIRST(ml); mp != NULL; mp = mn) { mn = TAILQ_NEXT(mp, m_list); if (mn != NULL && mn->m_char == mp->m_char + 1 && mn->m_glyph->g_index == mp->m_glyph->g_index + 1) continue; mbase->m_length = mp->m_char - mbase->m_char + 1; mbase = mp = mn; map_folded_count[map_idx]++; } } struct file_mapping { uint32_t source; uint16_t destination; uint16_t length; } __packed; static int write_mappings(FILE *fp, unsigned int map_idx) { struct mapping_list *ml = &maps[map_idx]; struct mapping *mp; struct file_mapping fm; unsigned int i = 0, j = 0; TAILQ_FOREACH(mp, ml, m_list) { j++; if (mp->m_length > 0) { i += mp->m_length; fm.source = htobe32(mp->m_char); fm.destination = htobe16(mp->m_glyph->g_index); fm.length = htobe16(mp->m_length - 1); if (fwrite(&fm, sizeof fm, 1, fp) != 1) return (1); } } assert(i == j); return (0); } struct file_header { uint8_t magic[8]; uint8_t width; uint8_t height; uint16_t pad; uint32_t glyph_count; uint32_t map_count[4]; } __packed; static int write_fnt(const char *filename) { FILE *fp; struct file_header fh = { .magic = "VFNT0002", }; fp = fopen(filename, "wb"); if (fp == NULL) { perror(filename); return (1); } fh.width = width; fh.height = height; fh.glyph_count = htobe32(glyph_unique); fh.map_count[0] = htobe32(map_folded_count[0]); fh.map_count[1] = htobe32(map_folded_count[1]); fh.map_count[2] = htobe32(map_folded_count[2]); fh.map_count[3] = htobe32(map_folded_count[3]); if (fwrite(&fh, sizeof fh, 1, fp) != 1) { perror(filename); fclose(fp); return (1); } if (write_glyphs(fp) != 0 || write_mappings(fp, VFNT_MAP_NORMAL) != 0 || write_mappings(fp, 1) != 0 || write_mappings(fp, VFNT_MAP_BOLD) != 0 || write_mappings(fp, 3) != 0) { perror(filename); fclose(fp); return (1); } fclose(fp); return (0); } static void print_font_info(void) { printf( "Statistics:\n" "- glyph_total: %6u\n" "- glyph_normal: %6u\n" "- glyph_normal_right: %6u\n" "- glyph_bold: %6u\n" "- glyph_bold_right: %6u\n" "- glyph_unique: %6u\n" "- glyph_dupe: %6u\n" "- mapping_total: %6u\n" "- mapping_normal: %6u\n" "- mapping_normal_folded: %6u\n" "- mapping_normal_right: %6u\n" "- mapping_normal_right_folded: %6u\n" "- mapping_bold: %6u\n" "- mapping_bold_folded: %6u\n" "- mapping_bold_right: %6u\n" "- mapping_bold_right_folded: %6u\n" "- mapping_unique: %6u\n" "- mapping_dupe: %6u\n", glyph_total, glyph_count[0], glyph_count[1], glyph_count[2], glyph_count[3], glyph_unique, glyph_dupe, mapping_total, map_count[0], map_folded_count[0], map_count[1], map_folded_count[1], map_count[2], map_folded_count[2], map_count[3], map_folded_count[3], mapping_unique, mapping_dupe); } int main(int argc, char *argv[]) { int ch, val, verbose = 0; assert(sizeof(struct file_header) == 32); assert(sizeof(struct file_mapping) == 8); while ((ch = getopt(argc, argv, "h:vw:")) != -1) { switch (ch) { case 'h': val = atoi(optarg); if (val <= 0 || val > 128) errx(1, "Invalid height %d", val); height = val; break; case 'v': verbose = 1; break; case 'w': set_width(atoi(optarg)); break; case '?': default: usage(); } } argc -= optind; argv += optind; if (argc < 2 || argc > 3) usage(); wbytes = howmany(width, 8); if (parse_file(argv[0], VFNT_MAP_NORMAL) != 0) return (1); argc--; argv++; if (argc == 2) { if (parse_file(argv[0], VFNT_MAP_BOLD) != 0) return (1); argc--; argv++; } number_glyphs(); dedup_mapping(VFNT_MAP_BOLD); dedup_mapping(VFNT_MAP_BOLD_RH); fold_mappings(0); fold_mappings(1); fold_mappings(2); fold_mappings(3); if (write_fnt(argv[0]) != 0) return (1); if (verbose) print_font_info(); return (0); }