/* Copyright 1996-2018 Han The Thanh This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ #include "dvips.h" /* * The external declarations: */ #include "protos.h" #include "ptexmac.h" #undef fm_extend #define fm_extend(f) 0 #undef fm_slant #define fm_slant(f) 0 #undef is_reencoded #define is_reencoded(f) (cur_enc_name != NULL) #undef is_subsetted #define is_subsetted(f) true #undef is_included #define is_included(f) true #undef set_cur_file_name #define set_cur_file_name(s) cur_file_name = s #define external_enc() ext_glyph_names #define full_file_name() cur_file_name #define is_used_char(c) (grid[c] == 1) #define end_last_eexec_line() \ hexline_length = HEXLINE_WIDTH; \ end_hexline(); \ t1_eexec_encrypt = false #define t1_scan_only() #define t1_scan_keys() #define embed_all_glyphs(tex_font) false #undef pdfmovechars #ifdef SHIFTLOWCHARS #define pdfmovechars shiftlowchars #define t1_char(c) T1Char(c) #else /* SHIFTLOWCHARS */ #define t1_char(c) c #define pdfmovechars 0 #endif /* SHIFTLOWCHARS */ #define extra_charset() dvips_extra_charset #define make_subset_tag(a, b) #define update_subset_tag() static char *dvips_extra_charset; static char *cur_file_name; static char *cur_enc_name; static unsigned char *grid; static char *ext_glyph_names[256]; static char print_buf[PRINTF_BUF_SIZE]; static int hexline_length; static char notdef[] = ".notdef"; static size_t last_ptr_index; #include #define t1_log(str) #define get_length1() #define get_length2() #define get_length3() #define save_offset() #define t1_open() \ ((t1_file = search(type1path, cur_file_name, FOPEN_RBIN_MODE)) != NULL) #define t1_close() xfclose(t1_file, cur_file_name) #define t1_getchar() getc(t1_file) #define t1_putchar(c) fputc(c, bitfile) #define t1_ungetchar(c) ungetc(c, t1_file) #define t1_eof() feof(t1_file) #define str_prefix(s1, s2) (strncmp(s1, s2, strlen(s2)) == 0) #define t1_prefix(s) str_prefix(t1_line_array, s) #define t1_buf_prefix(s) str_prefix(t1_buf_array, s) #define t1_suffix(s) str_suffix(t1_line_array, t1_line_ptr, s) #define t1_buf_suffix(s) str_suffix(t1_buf_array, t1_buf_ptr, s) #define t1_charstrings() strstr(t1_line_array, charstringname) #define t1_subrs() t1_prefix("/Subrs") #define t1_end_eexec() t1_suffix("mark currentfile closefile") #define t1_cleartomark() t1_prefix("cleartomark") #define enc_open() \ ((enc_file = search(encpath, cur_file_name, FOPEN_RBIN_MODE)) != NULL) #define enc_close() xfclose(enc_file, cur_file_name) #define enc_getchar() getc(enc_file) #define enc_eof() feof(enc_file) #define valid_code(c) (c >= 0 && c < 256) #define fixedcontent true /* false for pdfTeX, true for dvips */ static const char *standard_glyph_names[256] = { /* 0x00 */ notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, /* 0x10 */ notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, /* 0x20 */ "space", "exclam", "quotedbl", "numbersign", "dollar", "percent", "ampersand", "quoteright", "parenleft", "parenright", "asterisk", "plus", "comma", "hyphen", "period", "slash", /* 0x30 */ "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "colon", "semicolon", "less", "equal", "greater", "question", /* 0x40 */ "at", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", /* 0x50 */ "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "bracketleft", "backslash", "bracketright", "asciicircum", "underscore", /* 0x60 */ "quoteleft", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", /* 0x70 */ "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "braceleft", "bar", "braceright", "asciitilde", notdef, /* 0x80 */ notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, /* 0x90 */ notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, /* 0xa0 */ notdef, "exclamdown", "cent", "sterling", "fraction", "yen", "florin", "section", "currency", "quotesingle", "quotedblleft", "guillemotleft", "guilsinglleft", "guilsinglright", "fi", "fl", /* 0xb0 */ notdef, "endash", "dagger", "daggerdbl", "periodcentered", notdef, "paragraph", "bullet", "quotesinglbase", "quotedblbase", "quotedblright", "guillemotright", "ellipsis", "perthousand", notdef, "questiondown", /* 0xc0 */ notdef, "grave", "acute", "circumflex", "tilde", "macron", "breve", "dotaccent", "dieresis", notdef, "ring", "cedilla", notdef, "hungarumlaut", "ogonek", "caron", /* 0xd0 */ "emdash", notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, notdef, /* 0xe0 */ notdef, "AE", notdef, "ordfeminine", notdef, notdef, notdef, notdef, "Lslash", "Oslash", "OE", "ordmasculine", notdef, notdef, notdef, notdef, /* 0xf0 */ notdef, "ae", notdef, notdef, notdef, "dotlessi", notdef, notdef, "lslash", "oslash", "oe", "germandbls", notdef, notdef, notdef, notdef }; char **t1_glyph_names; char *t1_builtin_glyph_names[256]; static boolean read_encoding_only; static char charstringname[] = "/CharStrings"; enum { ENC_STANDARD, ENC_BUILTIN } t1_encoding; #define T1_BUF_SIZE 0x10 #define ENC_BUF_SIZE 0x1000 #define CS_HSTEM 1 #define CS_VSTEM 3 #define CS_VMOVETO 4 #define CS_RLINETO 5 #define CS_HLINETO 6 #define CS_VLINETO 7 #define CS_RRCURVETO 8 #define CS_CLOSEPATH 9 #define CS_CALLSUBR 10 #define CS_RETURN 11 #define CS_ESCAPE 12 #define CS_HSBW 13 #define CS_ENDCHAR 14 #define CS_RMOVETO 21 #define CS_HMOVETO 22 #define CS_VHCURVETO 30 #define CS_HVCURVETO 31 #define CS_1BYTE_MAX (CS_HVCURVETO + 1) #define CS_DOTSECTION CS_1BYTE_MAX + 0 #define CS_VSTEM3 CS_1BYTE_MAX + 1 #define CS_HSTEM3 CS_1BYTE_MAX + 2 #define CS_SEAC CS_1BYTE_MAX + 6 #define CS_SBW CS_1BYTE_MAX + 7 #define CS_DIV CS_1BYTE_MAX + 12 #define CS_CALLOTHERSUBR CS_1BYTE_MAX + 16 #define CS_POP CS_1BYTE_MAX + 17 #define CS_SETCURRENTPOINT CS_1BYTE_MAX + 33 #define CS_2BYTE_MAX (CS_SETCURRENTPOINT + 1) #define CS_MAX CS_2BYTE_MAX typedef unsigned char byte; typedef struct { byte nargs; /* number of arguments */ boolean bottom; /* take arguments from bottom of stack? */ boolean clear; /* clear stack? */ boolean valid; } cc_entry; /* CharString Command */ typedef struct { char *name; /* glyph name (or notdef for Subrs entry) */ byte *data; unsigned short len; /* length of the whole string */ unsigned short cslen; /* length of the encoded part of the string */ boolean used; boolean valid; } cs_entry; static unsigned short t1_dr, t1_er; static const unsigned short t1_c1 = 52845, t1_c2 = 22719; static unsigned short t1_cslen; static short t1_lenIV; static char enc_line[ENC_BUF_SIZE]; /* define t1_line_ptr, t1_line_array & t1_line_limit */ typedef char t1_line_entry; define_array(t1_line); /* define t1_buf_ptr, t1_buf_array & t1_buf_limit */ typedef char t1_buf_entry; define_array(t1_buf); static int cs_start; static cs_entry *cs_tab, *cs_ptr, *cs_notdef; static char *cs_dict_start, *cs_dict_end; static int cs_count, cs_size, cs_size_pos; static cs_entry *subr_tab; static char *subr_array_start, *subr_array_end; static int subr_max, subr_size, subr_size_pos; /* This list contains the begin/end tokens commonly used in the */ /* /Subrs array of a Type 1 font. */ static const char *cs_token_pairs_list[][2] = { {" RD", "NP"}, {" -|", "|"}, {" RD", "noaccess put"}, {" -|", "noaccess put"}, {NULL, NULL} }; static const char **cs_token_pair; static boolean t1_pfa, t1_cs, t1_scan, t1_eexec_encrypt, t1_synthetic; static int t1_in_eexec; /* 0 before eexec-encrypted, 1 during, 2 after */ static long t1_block_length; static int last_hexbyte; static FILE *t1_file; static FILE *enc_file; static void pdftex_fail(const char *fmt, ...) { va_list args; va_start(args, fmt); fputs("\nError: module writet1", stderr); if (cur_file_name) fprintf_str(stderr, " (file %s)", cur_file_name); fputs(": ", stderr); vsprintf(print_buf, fmt, args); fputs_str(print_buf, stderr); fputs("\n ==> Fatal error occurred, the output PS file is not finished!\n", stderr); va_end(args); exit(-1); } static void pdftex_warn(const char *fmt, ...) { va_list args; va_start(args, fmt); fputs("\nWarning: module writet1 of dvips", stderr); if (cur_file_name) fprintf_str(stderr, " (file %s)", cur_file_name); fputs(": ", stderr); vsprintf(print_buf, fmt, args); fputs_str(print_buf, stderr); fputs("\n", stderr); va_end(args); } #define HEXLINE_WIDTH 64 static void end_hexline(void) { if (hexline_length == HEXLINE_WIDTH) { fputs("\n", bitfile); hexline_length = 0; } } static void t1_outhex(byte b) { static const char *hexdigits = "0123456789ABCDEF"; t1_putchar(hexdigits[b/16]); t1_putchar(hexdigits[b%16]); hexline_length += 2; end_hexline(); } static void enc_getline(void) { char *p; int c; restart: if (enc_eof()) pdftex_fail("unexpected end of file"); p = enc_line; do { c = enc_getchar(); append_char_to_buf(c, p, enc_line, ENC_BUF_SIZE); } while (c != 10); append_eol(p, enc_line, ENC_BUF_SIZE); if (p - enc_line < 2 || *enc_line == '%') goto restart; } /* read encoding from .enc file, return glyph_names array, or pdffail() */ char **load_enc_file(char *enc_name) { char buf[ENC_BUF_SIZE], *p, *r; int i, names_count; char **glyph_names; set_cur_file_name(enc_name); glyph_names = (char **) mymalloc(256 * sizeof(char *)); for (i = 0; i < 256; i++) glyph_names[i] = notdef; if (!enc_open()) { pdftex_warn("cannot open encoding file for reading"); cur_file_name = NULL; return glyph_names; } t1_log("{"); t1_log(cur_file_name = full_file_name()); enc_getline(); if (*enc_line != '/' || (r = strchr(enc_line, '[')) == NULL) { remove_eol(r, enc_line); pdftex_fail ("invalid encoding vector (a name or `[' missing): `%s'", enc_line); } names_count = 0; r++; /* skip '[' */ skip(r, ' '); for (;;) { while (*r == '/') { for (p = buf, r++; *r != ' ' && *r != 10 && *r != ']' && *r != '/'; *p++ = *r++); *p = 0; skip(r, ' '); if (names_count > 255) pdftex_fail("encoding vector contains more than 256 names"); if (strcmp(buf, notdef) != 0) glyph_names[names_count] = xstrdup(buf); names_count++; } if (*r != 10 && *r != '%') { if (str_prefix(r, "] def")) goto done; else { remove_eol(r, enc_line); pdftex_fail ("invalid encoding vector: a name or `] def' expected: `%s'", enc_line); } } enc_getline(); r = enc_line; } done: enc_close(); t1_log("}"); cur_file_name = NULL; return glyph_names; } static void t1_check_pfa(void) { const int c = t1_getchar(); t1_pfa = (c != 128) ? true : false; t1_ungetchar(c); } static int t1_getbyte(void) { int c = t1_getchar(); if (t1_pfa) return c; if (t1_block_length == 0) { if (c != 128) pdftex_fail("invalid marker"); c = t1_getchar(); if (c == 3) { while (!t1_eof()) t1_getchar(); return EOF; } t1_block_length = t1_getchar() & 0xff; t1_block_length |= (t1_getchar() & 0xff) << 8; t1_block_length |= (t1_getchar() & 0xff) << 16; t1_block_length |= (t1_getchar() & 0xff) << 24; c = t1_getchar(); } t1_block_length--; return c; } static int hexval(int c) { if (c >= 'A' && c <= 'F') return c - 'A' + 10; else if (c >= 'a' && c <= 'f') return c - 'a' + 10; else if (c >= '0' && c <= '9') return c - '0'; else return -1; } static byte edecrypt(byte cipher) { byte plain; if (t1_pfa) { while (cipher == 10 || cipher == 13) cipher = t1_getbyte(); last_hexbyte = cipher = (hexval(cipher) << 4) + hexval(t1_getbyte()); } plain = (cipher ^ (t1_dr >> 8)); t1_dr = (cipher + t1_dr) * t1_c1 + t1_c2; return plain; } static byte cdecrypt(byte cipher, unsigned short *cr) { const byte plain = (cipher ^ (*cr >> 8)); *cr = (cipher + *cr) * t1_c1 + t1_c2; return plain; } static byte eencrypt(byte plain) { const byte cipher = (plain ^ (t1_er >> 8)); t1_er = (cipher + t1_er) * t1_c1 + t1_c2; return cipher; } static byte cencrypt(byte plain, unsigned short *cr) { const byte cipher = (plain ^ (*cr >> 8)); *cr = (cipher + *cr) * t1_c1 + t1_c2; return cipher; } static char *eol(char *s) { char *p = strend(s); if (p - s > 1 && p[-1] != 10) { *p++ = 10; *p = 0; } return p; } static float t1_scan_num(char *p, char **r) { float f; skip(p, ' '); if (sscanf(p, "%g", &f) != 1) { remove_eol(p, t1_line_array); pdftex_fail("a number expected: `%s'", t1_line_array); } if (r != NULL) { for (; isdigit((unsigned char)*p) || *p == '.' || *p == 'e' || *p == 'E' || *p == '+' || *p == '-'; p++); *r = p; } return f; } static boolean str_suffix(const char *begin_buf, const char *end_buf, const char *s) { const char *s1 = end_buf - 1, *s2 = strend(s) - 1; if (*s1 == 10) s1--; while (s1 >= begin_buf && s2 >= s) { if (*s1-- != *s2--) return false; } return s2 < s; } static void t1_getline(void) { int c, l, eexec_scan; char *p; static const char eexec_str[] = "currentfile eexec"; static int eexec_len = 17; /* strlen(eexec_str) */ restart: if (t1_eof()) pdftex_fail("unexpected end of file"); t1_line_ptr = t1_line_array; alloc_array(t1_line, 1, T1_BUF_SIZE); t1_cslen = 0; eexec_scan = 0; c = t1_getbyte(); if (c == EOF) goto exit; while (!t1_eof()) { if (t1_in_eexec == 1) c = edecrypt((byte)c); alloc_array(t1_line, 1, T1_BUF_SIZE); append_char_to_buf(c, t1_line_ptr, t1_line_array, t1_line_limit); if (t1_in_eexec == 0 && eexec_scan >= 0 && eexec_scan < eexec_len) { if (t1_line_array[eexec_scan] == eexec_str[eexec_scan]) eexec_scan++; else eexec_scan = -1; } if (c == 10 || (t1_pfa && eexec_scan == eexec_len && c == 32)) break; if (t1_cs && t1_cslen == 0 && (t1_line_ptr - t1_line_array > 4) && (t1_suffix(" RD ") || t1_suffix(" -| "))) { p = t1_line_ptr - 5; while (*p != ' ') p--; t1_cslen = l = t1_scan_num(p + 1, 0); cs_start = t1_line_ptr - t1_line_array; /* cs_start is an index now */ alloc_array(t1_line, l, T1_BUF_SIZE); while (l-- > 0) *t1_line_ptr++ = edecrypt((byte)t1_getbyte()); } c = t1_getbyte(); } alloc_array(t1_line, 2, T1_BUF_SIZE); /* append_eol can append 2 chars */ append_eol(t1_line_ptr, t1_line_array, t1_line_limit); if (t1_line_ptr - t1_line_array < 2) goto restart; if (eexec_scan == eexec_len) t1_in_eexec = 1; exit: /* ensure that t1_buf_array has as much room as t1_line_array */ t1_buf_ptr = t1_buf_array; alloc_array(t1_buf, t1_line_limit, t1_line_limit); } static void t1_putline(void) { char *p = t1_line_array; if (t1_line_ptr - t1_line_array <= 1) return; if (t1_eexec_encrypt) { while (p < t1_line_ptr) t1_outhex(eencrypt(*p++)); /* dvips outputs hex, unlike pdftex */ } else while (p < t1_line_ptr) t1_putchar(*p++); } static void t1_puts(const char *s) { if (s != t1_line_array) strcpy(t1_line_array, s); t1_line_ptr = strend(t1_line_array); t1_putline(); } static void t1_printf(const char *fmt, ...) { va_list args; va_start(args, fmt); vsprintf(t1_line_array, fmt, args); t1_puts(t1_line_array); va_end(args); } static void t1_init_params(const char *open_name_prefix) { t1_log(open_name_prefix); t1_log(cur_file_name); t1_lenIV = 4; t1_dr = 55665; t1_er = 55665; t1_in_eexec = 0; t1_cs = false; t1_scan = true; t1_synthetic = false; t1_eexec_encrypt = false; t1_block_length = 0; t1_check_pfa(); } static void t1_close_font_file(const char *close_name_suffix) { t1_log(close_name_suffix); t1_close(); cur_file_name = NULL; } static void t1_check_block_len(boolean decrypt) { int l, c; if (t1_block_length == 0) return; c = t1_getbyte(); if (decrypt) c = edecrypt((byte)c); l = t1_block_length; if (!(l == 0 && (c == 10 || c == 13))) { pdftex_warn("%i bytes more than expected were ignored", l + 1); while (l-- > 0) t1_getbyte(); } } static void t1_start_eexec(void) { int i; if (is_included(fm_cur)) { get_length1(); save_offset(); } if (!t1_pfa) t1_check_block_len(false); for (t1_line_ptr = t1_line_array, i = 0; i < 4; i++) { edecrypt((byte)t1_getbyte()); *t1_line_ptr++ = 0; } t1_eexec_encrypt = true; if (is_included(fm_cur)) t1_putline(); /* to put the first four bytes */ } static void t1_stop_eexec(void) { int c; if (is_included(fm_cur)) { get_length2(); save_offset(); } end_last_eexec_line(); if (!t1_pfa) t1_check_block_len(true); else { c = edecrypt((byte)t1_getbyte()); if (!(c == 10 || c == 13)) { if (last_hexbyte == 0) t1_puts("00"); else pdftex_warn("unexpected data after eexec"); } } t1_cs = false; t1_in_eexec = 2; } static void t1_scan_param(void) { static const char *lenIV = "/lenIV"; if (!t1_scan || *t1_line_array != '/') return; if (t1_prefix(lenIV)) { t1_lenIV = t1_scan_num(t1_line_array + strlen(lenIV), 0); if (t1_lenIV < 0) pdftex_fail("negative value of lenIV is not supported"); return; } t1_scan_keys(); } static void copy_glyph_names(char **glyph_names, int a, int b) { if (glyph_names[b] != notdef) { xfree(glyph_names[b]); glyph_names[b] = notdef; } if (glyph_names[a] != notdef) { glyph_names[b] = xstrdup(glyph_names[a]); } } /* read encoding from Type1 font file, return glyph_names array, or pdffail() */ static char **t1_builtin_enc(void) { int i, a, b, c, counter = 0; char *r, *p, **glyph_names; /* At this moment "/Encoding" is the prefix of t1_line_array */ glyph_names = t1_builtin_glyph_names; for (i = 0; i < 256; i++) glyph_names[i] = notdef; if (t1_suffix("def")) { /* predefined encoding */ if (sscanf(t1_line_array + strlen("/Encoding"), "%255s", t1_buf_array) == 1 && strcmp(t1_buf_array, "StandardEncoding") == 0) { t1_encoding = ENC_STANDARD; for (i = 0; i < 256; i++) { if (standard_glyph_names[i] != notdef) glyph_names[i] = xstrdup(standard_glyph_names[i]); } return glyph_names; } pdftex_fail("cannot subset font (unknown predefined encoding `%s')", t1_buf_array); } /* At this moment "/Encoding" is the prefix of t1_line_array, and the encoding is * not a predefined encoding. * * We have two possible forms of Encoding vector. The first case is * * /Encoding [/a /b /c...] readonly def * * and the second case can look like * * /Encoding 256 array 0 1 255 {1 index exch /.notdef put} for * dup 0 /x put * dup 1 /y put * ... * readonly def */ t1_encoding = ENC_BUILTIN; if (t1_prefix("/Encoding [") || t1_prefix("/Encoding[")) { /* the first case */ r = strchr(t1_line_array, '[') + 1; skip(r, ' '); for (;;) { while (*r == '/') { for (p = t1_buf_array, r++; *r != 32 && *r != 10 && *r != ']' && *r != '/'; *p++ = *r++); *p = 0; skip(r, ' '); if (counter > 255) pdftex_fail("encoding vector contains more than 256 names"); if (strcmp(t1_buf_array, notdef) != 0) glyph_names[counter] = xstrdup(t1_buf_array); counter++; } if (*r != 10 && *r != '%') { if (str_prefix(r, "] def") || str_prefix(r, "] readonly def")) break; else { remove_eol(r, t1_line_array); pdftex_fail ("a name or `] def' or `] readonly def' expected: `%s'", t1_line_array); } } t1_getline(); r = t1_line_array; } } else { /* the second case */ p = strchr(t1_line_array, 10); for (;;) { if (*p == 10) { t1_getline(); p = t1_line_array; } /* check for `dup put' */ if (sscanf(p, "dup %i%255s put", &i, t1_buf_array) == 2 && *t1_buf_array == '/' && valid_code(i)) { if (strcmp(t1_buf_array + 1, notdef) != 0) glyph_names[i] = xstrdup(t1_buf_array + 1); p = strstr(p, " put") + strlen(" put"); skip(p, ' '); } /* check for `dup dup exch get put' */ else if (sscanf(p, "dup dup %i exch %i get put", &b, &a) == 2 && valid_code(a) && valid_code(b)) { copy_glyph_names(glyph_names, a, b); p = strstr(p, " get put") + strlen(" get put"); skip(p, ' '); } /* check for `dup dup getinterval exch putinterval' */ else if (sscanf(p, "dup dup %i %i getinterval %i exch putinterval", &a, &c, &b) == 3 && valid_code(a) && valid_code(b) && valid_code(c)) { for (i = 0; i < c; i++) copy_glyph_names(glyph_names, a + i, b + i); p = strstr(p, " putinterval") + strlen(" putinterval"); skip(p, ' '); } /* check for `def' or `readonly def' */ else if ((p == t1_line_array || (p > t1_line_array && p[-1] == ' ')) && strcmp(p, "def\n") == 0) return glyph_names; /* skip an unrecognizable word */ else { while (*p != ' ' && *p != 10) p++; skip(p, ' '); } } } return glyph_names; } static void t1_check_end(void) { if (t1_eof()) return; t1_getline(); if (t1_prefix("{restore}")) t1_putline(); } static boolean t1_open_fontfile(const char *open_name_prefix) { if (!t1_open()) { char *msg = concat ("! Couldn't find font file ", cur_file_name); error(msg); } t1_init_params(open_name_prefix); return true; /* font file found */ } #define t1_include() #define check_subr(subr) \ if (subr >= subr_size || subr < 0) \ pdftex_fail("Subrs array: entry index out of range (%i)", subr); static const char **check_cs_token_pair(void) { const char **p = (const char **) cs_token_pairs_list; for (; p[0] != NULL; ++p) if (t1_buf_prefix(p[0]) && t1_buf_suffix(p[1])) return p; return NULL; } static void cs_store(boolean is_subr) { char *p; cs_entry *ptr; int subr; for (p = t1_line_array, t1_buf_ptr = t1_buf_array; *p != ' '; *t1_buf_ptr++ = *p++); *t1_buf_ptr = 0; if (is_subr) { subr = t1_scan_num(p + 1, 0); check_subr(subr); ptr = subr_tab + subr; } else { ptr = cs_ptr++; if (cs_ptr - cs_tab > cs_size) pdftex_fail ("CharStrings dict: more entries than dict size (%i)", cs_size); if (strcmp(t1_buf_array + 1, notdef) == 0) /* skip the slash */ ptr->name = notdef; else ptr->name = xstrdup(t1_buf_array + 1); } /* copy " RD " + cs data to t1_buf_array */ memcpy(t1_buf_array, t1_line_array + cs_start - 4, (unsigned) (t1_cslen + 4)); /* copy the end of cs data to t1_buf_array */ for (p = t1_line_array + cs_start + t1_cslen, t1_buf_ptr = t1_buf_array + t1_cslen + 4; *p != 10; *t1_buf_ptr++ = *p++); *t1_buf_ptr++ = 10; if (is_subr && cs_token_pair == NULL) cs_token_pair = check_cs_token_pair(); ptr->len = t1_buf_ptr - t1_buf_array; ptr->cslen = t1_cslen; ptr->data = xtalloc(ptr->len, byte); memcpy(ptr->data, t1_buf_array, ptr->len); ptr->valid = true; } #define store_subr() cs_store(true) #define store_cs() cs_store(false) #define CC_STACK_SIZE 24 static integer cc_stack[CC_STACK_SIZE], *stack_ptr = cc_stack; static cc_entry cc_tab[CS_MAX]; static boolean is_cc_init = false; #define cc_pop(N) \ if (stack_ptr - cc_stack < (N)) \ stack_error(N); \ stack_ptr -= N #define stack_error(N) { \ pdftex_fail("CharString: invalid access (%i) to stack (%i entries)", \ (int) N, (int)(stack_ptr - cc_stack)); \ goto cs_error; \ } /* static integer cc_get(integer index) { if (index < 0) { if (stack_ptr + index < cc_stack ) stack_error(stack_ptr - cc_stack + index); return *(stack_ptr + index); } else { if (cc_stack + index >= stack_ptr) stack_error(index); return cc_stack[index]; } } */ #define cc_get(N) ((N) < 0 ? *(stack_ptr + (N)) : *(cc_stack + (N))) #define cc_push(V) *stack_ptr++ = V #define cc_clear() stack_ptr = cc_stack #define set_cc(N, B, A, C) \ cc_tab[N].nargs = A; \ cc_tab[N].bottom = B; \ cc_tab[N].clear = C; \ cc_tab[N].valid = true static void cc_init(void) { int i; if (is_cc_init) return; for (i = 0; i < CS_MAX; i++) cc_tab[i].valid = false; set_cc(CS_HSTEM, true, 2, true); set_cc(CS_VSTEM, true, 2, true); set_cc(CS_VMOVETO, true, 1, true); set_cc(CS_RLINETO, true, 2, true); set_cc(CS_HLINETO, true, 1, true); set_cc(CS_VLINETO, true, 1, true); set_cc(CS_RRCURVETO, true, 6, true); set_cc(CS_CLOSEPATH, false, 0, true); set_cc(CS_CALLSUBR, false, 1, false); set_cc(CS_RETURN, false, 0, false); /* set_cc(CS_ESCAPE, false, 0, false); */ set_cc(CS_HSBW, true, 2, true); set_cc(CS_ENDCHAR, false, 0, true); set_cc(CS_RMOVETO, true, 2, true); set_cc(CS_HMOVETO, true, 1, true); set_cc(CS_VHCURVETO, true, 4, true); set_cc(CS_HVCURVETO, true, 4, true); set_cc(CS_DOTSECTION, false, 0, true); set_cc(CS_VSTEM3, true, 6, true); set_cc(CS_HSTEM3, true, 6, true); set_cc(CS_SEAC, true, 5, true); set_cc(CS_SBW, true, 4, true); set_cc(CS_DIV, false, 2, false); set_cc(CS_CALLOTHERSUBR, false, 0, false); set_cc(CS_POP, false, 0, false); set_cc(CS_SETCURRENTPOINT, true, 2, true); is_cc_init = true; } #define cs_getchar() cdecrypt(*data++, &cr) #define mark_subr(n) cs_mark(0, n) #define mark_cs(s) cs_mark(s, 0) static void cs_fail(const char *cs_name, int subr, const char *fmt, ...) { char buf[SMALL_BUF_SIZE]; va_list args; va_start(args, fmt); vsprintf(buf, fmt, args); va_end(args); if (cs_name == NULL) pdftex_warn("Subr (%i): %s", (int) subr, buf); else pdftex_warn("CharString (/%s): %s", cs_name, buf); } /* fix a return-less subr by appending CS_RETURN */ static void append_cs_return(cs_entry *ptr) { unsigned short cr; int i; byte *p, *q, *data, *new_data; assert(ptr != NULL && ptr->valid && ptr->used); /* decrypt the cs data to t1_buf_array, append CS_RETURN */ p = (byte *) t1_buf_array; data = ptr->data + 4; cr = 4330; for (i = 0; i < ptr->cslen; i++) *p++ = cs_getchar(); *p = CS_RETURN; /* encrypt the new cs data to new_data */ new_data = xtalloc(ptr->len + 1, byte); memcpy(new_data, ptr->data, 4); p = new_data + 4; q = (byte *) t1_buf_array; cr = 4330; for (i = 0; i < ptr->cslen + 1; i++) *p++ = cencrypt(*q++, &cr); memcpy(p, ptr->data + 4 + ptr->cslen, ptr->len - ptr->cslen - 4); /* update *ptr */ xfree(ptr->data); ptr->data = new_data; ptr->len++; ptr->cslen++; } static void cs_mark(const char *cs_name, int subr) { byte *data; int i, b, cs_len; int last_cmd = 0; integer a, a1, a2; unsigned short cr; static integer lastargOtherSubr3 = 3; /* the argument of last call to OtherSubrs[3] */ cs_entry *ptr; cc_entry *cc; if (cs_name == NULL) { check_subr(subr); ptr = subr_tab + subr; if (!ptr->valid) return; } else { if (cs_notdef != NULL && (cs_name == notdef || strcmp(cs_name, notdef) == 0)) ptr = cs_notdef; else { for (ptr = cs_tab; ptr < cs_ptr; ptr++) if (strcmp(ptr->name, cs_name) == 0) break; if (ptr == cs_ptr) { pdftex_warn("glyph `%s' undefined", cs_name); return; } if (ptr->name == notdef) cs_notdef = ptr; } } /* only marked CharString entries and invalid entries can be skipped; valid marked subrs must be parsed to keep the stack in sync */ if (!ptr->valid || (ptr->used && cs_name != NULL)) return; ptr->used = true; cr = 4330; cs_len = ptr->cslen; data = ptr->data + 4; for (i = 0; i < t1_lenIV; i++, cs_len--) cs_getchar(); while (cs_len > 0) { --cs_len; b = cs_getchar(); if (b >= 32) { if (b <= 246) a = b - 139; else if (b <= 250) { --cs_len; a = ((b - 247) << 8) + 108 + cs_getchar(); } else if (b <= 254) { --cs_len; a = -((b - 251) << 8) - 108 - cs_getchar(); } else { cs_len -= 4; a = (cs_getchar() & 0xff) << 24; a |= (cs_getchar() & 0xff) << 16; a |= (cs_getchar() & 0xff) << 8; a |= (cs_getchar() & 0xff) << 0; if (sizeof(integer) > 4 && (a & 0x80000000)) a |= ~0x7FFFFFFF; } cc_push(a); } else { if (b == CS_ESCAPE) { b = cs_getchar() + CS_1BYTE_MAX; cs_len--; } if (b >= CS_MAX) { cs_fail(cs_name, subr, "command value out of range: %i", (int) b); goto cs_error; } cc = cc_tab + b; if (!cc->valid) { cs_fail(cs_name, subr, "command not valid: %i", (int) b); goto cs_error; } if (cc->bottom) { if (stack_ptr - cc_stack < cc->nargs) cs_fail(cs_name, subr, "less arguments on stack (%i) than required (%i)", (int) (stack_ptr - cc_stack), (int) cc->nargs); else if (stack_ptr - cc_stack > cc->nargs) cs_fail(cs_name, subr, "more arguments on stack (%i) than required (%i)", (int) (stack_ptr - cc_stack), (int) cc->nargs); } last_cmd = b; switch (cc - cc_tab) { case CS_CALLSUBR: a1 = cc_get(-1); cc_pop(1); mark_subr(a1); if (!subr_tab[a1].valid) { cs_fail(cs_name, subr, "cannot call subr (%i)", (int) a1); goto cs_error; } break; case CS_DIV: cc_pop(2); cc_push(0); break; case CS_CALLOTHERSUBR: if (cc_get(-1) == 3) lastargOtherSubr3 = cc_get(-3); a1 = cc_get(-2) + 2; cc_pop(a1); break; case CS_POP: cc_push(lastargOtherSubr3); /* the only case when we care about the value being pushed onto stack is when POP follows CALLOTHERSUBR (changing hints by OtherSubrs[3]) */ break; case CS_SEAC: a1 = cc_get(3); a2 = cc_get(4); cc_clear(); mark_cs(standard_glyph_names[a1]); mark_cs(standard_glyph_names[a2]); break; default: if (cc->clear) cc_clear(); } } } if (cs_name == NULL && last_cmd != CS_RETURN) { pdftex_warn("last command in subr `%i' is not a RETURN; " "I will add it now but please consider fixing the font", (int) subr); append_cs_return(ptr); } return; cs_error: /* an error occured during parsing */ cc_clear(); ptr->valid = false; ptr->used = false; } static void t1_subset_ascii_part(void) { int i, j; t1_getline(); while (!t1_prefix("/Encoding")) { t1_scan_param(); if (!(t1_prefix("/UniqueID") && !strncmp(t1_line_array + strlen(t1_line_array) -4, "def", 3))) t1_putline(); t1_getline(); } if (is_reencoded(fm_cur)) t1_glyph_names = external_enc(); else t1_glyph_names = t1_builtin_enc(); if (is_included(fm_cur) && is_subsetted(fm_cur)) { make_subset_tag(fm_cur, t1_glyph_names); update_subset_tag(); } if (t1_encoding == ENC_STANDARD) t1_puts("/Encoding StandardEncoding def\n"); else { t1_puts ("/Encoding 256 array\n0 1 255 {1 index exch /.notdef put} for\n"); for (i = 0, j = 0; i < 256; i++) { if (is_used_char(i) && t1_glyph_names[i] != notdef) { j++; t1_printf("dup %i /%s put\n", (int)t1_char(i), t1_glyph_names[i]); } } if (j == 0) /* We didn't mark anything for the Encoding array. */ /* We add "dup 0 /.notdef put" for compatibility */ /* with Acrobat 5.0. */ t1_puts("dup 0 /.notdef put\n"); t1_puts("readonly def\n"); } do { t1_getline(); t1_scan_param(); if (!t1_prefix("/UniqueID")) /* ignore UniqueID for subsetted fonts */ t1_putline(); } while (t1_in_eexec == 0); } static void cs_init(void) { cs_ptr = cs_tab = NULL; cs_dict_start = cs_dict_end = NULL; cs_count = cs_size = cs_size_pos = 0; cs_token_pair = NULL; subr_tab = NULL; subr_array_start = subr_array_end = NULL; subr_max = subr_size = subr_size_pos = 0; } static void init_cs_entry(cs_entry *cs) { cs->data = NULL; cs->name = NULL; cs->len = 0; cs->cslen = 0; cs->used = false; cs->valid = false; } static void t1_read_subrs(void) { int i, s; cs_entry *ptr; t1_getline(); while (!(t1_charstrings() || t1_subrs())) { t1_scan_param(); t1_putline(); t1_getline(); } found: t1_cs = true; t1_scan = false; if (!t1_subrs()) return; subr_size_pos = strlen("/Subrs") + 1; /* subr_size_pos points to the number indicating dict size after "/Subrs" */ subr_size = t1_scan_num(t1_line_array + subr_size_pos, 0); if (subr_size == 0) { while (!t1_charstrings()) t1_getline(); return; } subr_tab = xtalloc(subr_size, cs_entry); for (ptr = subr_tab; ptr - subr_tab < subr_size; ptr++) init_cs_entry(ptr); subr_array_start = xstrdup(t1_line_array); t1_getline(); while (t1_cslen) { store_subr(); t1_getline(); } /* mark the first four entries without parsing */ for (i = 0; i < subr_size && i < 4; i++) subr_tab[i].used = true; /* the end of the Subrs array might have more than one line so we need to concatnate them to subr_array_end. Unfortunately some fonts don't have the Subrs array followed by the CharStrings dict immediately (synthetic fonts). If we cannot find CharStrings in next POST_SUBRS_SCAN lines then we will treat the font as synthetic and ignore everything until next Subrs is found */ #define POST_SUBRS_SCAN 5 s = 0; *t1_buf_array = 0; for (i = 0; i < POST_SUBRS_SCAN; i++) { if (t1_charstrings()) break; s += t1_line_ptr - t1_line_array; alloc_array(t1_buf, s, T1_BUF_SIZE); strcat(t1_buf_array, t1_line_array); t1_getline(); } subr_array_end = xstrdup(t1_buf_array); if (i == POST_SUBRS_SCAN) { /* CharStrings not found; suppose synthetic font */ for (ptr = subr_tab; ptr - subr_tab < subr_size; ptr++) if (ptr->valid) xfree(ptr->data); xfree(subr_tab); xfree(subr_array_start); xfree(subr_array_end); cs_init(); t1_cs = false; t1_synthetic = true; while (!(t1_charstrings() || t1_subrs())) t1_getline(); goto found; } } #define t1_subr_flush() t1_flush_cs(true) #define t1_cs_flush() t1_flush_cs(false) static void t1_flush_cs(boolean is_subr) { char *p; byte *r, *return_cs = NULL; cs_entry *tab, *end_tab, *ptr; char *start_line, *line_end; int count, size_pos; unsigned short cr, cs_len = 0; /* to avoid warning about uninitialized use of cs_len */ if (is_subr) { start_line = subr_array_start; line_end = subr_array_end; size_pos = subr_size_pos; tab = subr_tab; count = subr_max + 1; end_tab = subr_tab + count; } else { start_line = cs_dict_start; line_end = cs_dict_end; size_pos = cs_size_pos; tab = cs_tab; end_tab = cs_ptr; count = cs_count; } t1_line_ptr = t1_line_array; for (p = start_line; p - start_line < size_pos;) *t1_line_ptr++ = *p++; while (isdigit((unsigned char)*p)) p++; sprintf(t1_line_ptr, "%u", count); strcat(t1_line_ptr, p); t1_line_ptr = eol(t1_line_array); t1_putline(); /* create return_cs to replace unused subr's */ if (is_subr) { cr = 4330; cs_len = 0; /* at this point we have t1_lenIV >= 0; * a negative value would be caught in t1_scan_param() */ return_cs = xtalloc(t1_lenIV + 1, byte); for (cs_len = 0, r = return_cs; cs_len < t1_lenIV; cs_len++, r++) *r = cencrypt(0x00, &cr); *r = cencrypt(CS_RETURN, &cr); cs_len++; } for (ptr = tab; ptr < end_tab; ptr++) { if (ptr->used) { if (is_subr) sprintf(t1_line_array, "dup %lu %u", (unsigned long) (ptr - tab), ptr->cslen); else sprintf(t1_line_array, "/%s %u", ptr->name, ptr->cslen); p = strend(t1_line_array); memcpy(p, ptr->data, ptr->len); t1_line_ptr = p + ptr->len; t1_putline(); } else { /* replace unsused subr's by return_cs */ if (is_subr) { sprintf(t1_line_array, "dup %lu %u%s ", (unsigned long) (ptr - tab), cs_len, cs_token_pair[0]); p = strend(t1_line_array); memcpy(p, return_cs, cs_len); t1_line_ptr = p + cs_len; t1_putline(); sprintf(t1_line_array, " %s", cs_token_pair[1]); t1_line_ptr = eol(t1_line_array); t1_putline(); } } xfree(ptr->data); if (ptr->name != notdef) xfree(ptr->name); } sprintf(t1_line_array, "%s", line_end); t1_line_ptr = eol(t1_line_array); t1_putline(); if (is_subr) xfree(return_cs); xfree(tab); xfree(start_line); xfree(line_end); } static void t1_mark_glyphs(void) { int i; char *charset = extra_charset(); char *g, *s, *r; cs_entry *ptr; if (t1_synthetic || embed_all_glyphs(tex_font)) { /* mark everything */ if (cs_tab != NULL) for (ptr = cs_tab; ptr < cs_ptr; ptr++) if (ptr->valid) ptr->used = true; if (subr_tab != NULL) { for (ptr = subr_tab; ptr - subr_tab < subr_size; ptr++) if (ptr->valid) ptr->used = true; subr_max = subr_size - 1; } return; } mark_cs(notdef); for (i = 0; i < 256; i++) if (is_used_char(i)) { if (t1_glyph_names[i] == notdef) pdftex_warn("character %i is mapped to %s", i, notdef); else mark_cs(t1_glyph_names[i]); } if (charset == NULL) goto set_subr_max; g = s = charset + 1; /* skip the first '/' */ r = strend(g); while (g < r) { while (*s != '/' && s < r) s++; *s = 0; /* terminate g by rewriting '/' to 0 */ mark_cs(g); g = s + 1; } set_subr_max: if (subr_tab != NULL) for (subr_max = -1, ptr = subr_tab; ptr - subr_tab < subr_size; ptr++) if (ptr->used && ptr - subr_tab > subr_max) subr_max = ptr - subr_tab; } static void t1_check_unusual_charstring(void) { char *p = strstr(t1_line_array, charstringname) + strlen(charstringname); int i; /* if no number follows "/CharStrings", let's read the next line */ if (sscanf(p, "%i", &i) != 1) { /* pdftex_warn("no number found after `%s', I assume it's on the next line", charstringname); */ strcpy(t1_buf_array, t1_line_array); /* t1_getline always appends EOL to t1_line_array; let's change it to * space before appending the next line */ *(strend(t1_buf_array) - 1) = ' '; t1_getline(); alloc_array(t1_buf, strlen(t1_line_array) + (t1_buf_array ? strlen(t1_buf_array) + 1 : 0), T1_BUF_SIZE); strcat(t1_buf_array, t1_line_array); alloc_array(t1_line, strlen(t1_buf_array) + 1, T1_BUF_SIZE); strcpy(t1_line_array, t1_buf_array); t1_line_ptr = eol(t1_line_array); } } static void t1_subset_charstrings(void) { cs_entry *ptr; /* at this point t1_line_array contains "/CharStrings". when we hit a case like this: dup/CharStrings 229 dict dup begin we read the next line and concatenate to t1_line_array before moving on */ t1_check_unusual_charstring(); cs_size_pos = strstr(t1_line_array, charstringname) + strlen(charstringname) - t1_line_array + 1; /* cs_size_pos points to the number indicating dict size after "/CharStrings" */ cs_size = t1_scan_num(t1_line_array + cs_size_pos, 0); cs_ptr = cs_tab = xtalloc(cs_size, cs_entry); for (ptr = cs_tab; ptr - cs_tab < cs_size; ptr++) init_cs_entry(ptr); cs_notdef = NULL; cs_dict_start = xstrdup(t1_line_array); t1_getline(); while (t1_cslen) { store_cs(); t1_getline(); } cs_dict_end = xstrdup(t1_line_array); t1_mark_glyphs(); if (subr_tab != NULL) { if (cs_token_pair == NULL) pdftex_fail ("This Type 1 font uses mismatched subroutine begin/end token pairs."); t1_subr_flush(); } for (cs_count = 0, ptr = cs_tab; ptr < cs_ptr; ptr++) if (ptr->used) cs_count++; t1_cs_flush(); } static void t1_subset_end(void) { if (t1_synthetic) { /* copy to "dup /FontName get exch definefont pop" */ while (!strstr(t1_line_array, "definefont")) { t1_getline(); t1_putline(); } while (!t1_end_eexec()) t1_getline(); /* ignore the rest */ t1_putline(); /* write "mark currentfile closefile" */ } else while (!t1_end_eexec()) { /* copy to "mark currentfile closefile" */ t1_getline(); t1_putline(); } t1_stop_eexec(); if (fixedcontent) { /* copy 512 zeros (not needed for PDF) */ while (!t1_cleartomark()) { t1_getline(); t1_putline(); } if (!t1_synthetic) /* don't check "{restore}if" for synthetic fonts */ t1_check_end(); /* write "{restore}if" if found */ } get_length3(); } static void writet1(void) { read_encoding_only = false; if (!is_included(fm_cur)) { /* scan parameters from font file */ if (!t1_open_fontfile("{")) return; t1_scan_only(); t1_close_font_file("}"); return; } if (!is_subsetted(fm_cur)) { /* include entire font */ if (!t1_open_fontfile("<<")) return; t1_include(); t1_close_font_file(">>"); return; } /* partial downloading */ if (!t1_open_fontfile("<")) return; t1_subset_ascii_part(); t1_start_eexec(); cc_init(); cs_init(); t1_read_subrs(); t1_subset_charstrings(); t1_subset_end(); t1_close_font_file(">"); } boolean t1_subset_2(char *fontfile, unsigned char *g, char *extraGlyphs) { int i; for (i = 0; i < 256; i++) ext_glyph_names[i] = (char*) notdef; grid = g; cur_file_name = fontfile; hexline_length = 0; dvips_extra_charset = extraGlyphs; writet1(); for (i = 0; i < 256; i++) if (ext_glyph_names[i] != notdef) free(ext_glyph_names[i]); return 1; /* note: there *is* no unsuccessful return */ }