% writet1.w % % Copyright 1996-2006 Han The Thanh % Copyright 2006-2009 Taco Hoekwater % % This file is part of LuaTeX. % % LuaTeX 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. % % LuaTeX 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 Lesser General Public % License for more details. % % You should have received a copy of the GNU General Public License along % with LuaTeX; if not, see . @ @c static const char _svn_version[] = "$Id: writet1.w 3960 2010-11-13 07:34:49Z taco $ " "$URL: http://foundry.supelec.fr/svn/luatex/tags/beta-0.70.1/source/texk/web2c/luatexdir/font/writet1.w $"; #include "ptexlib.h" #include #define t1_log(str) if(tracefilenames) tex_printf("%s", str) #define get_length1() t1_length1 = t1_offset() - t1_save_offset #define get_length2() t1_length2 = t1_offset() - t1_save_offset #define get_length3() t1_length3 = fixedcontent? t1_offset() - t1_save_offset : 0 #define save_offset() t1_save_offset = t1_offset() #define t1_putchar(A) fb_putchar(pdf,(A)) #define t1_offset() fb_offset(pdf) #define out_eexec_char t1_putchar #define end_last_eexec_line() \ t1_eexec_encrypt = false #define t1_char(c) c #define embed_all_glyphs(tex_font) fm_cur->all_glyphs #define extra_charset() fm_cur->charset #define update_subset_tag() \ strncpy(pdf->fb_array + t1_fontname_offset, fm_cur->subset_tag, 6) #define fixedcontent false int t1_length1, t1_length2, t1_length3; static int t1_save_offset; static int t1_fontname_offset; static unsigned char *t1_buffer = NULL; static int t1_size = 0; static int t1_curbyte = 0; @ @c #define t1_read_file() \ readbinfile(t1_file,&t1_buffer,&t1_size) #define t1_close() xfclose(t1_file,cur_file_name) #define t1_getchar() t1_buffer[t1_curbyte++] #define t1_ungetchar(c) t1_curbyte-- #define t1_eof() (t1_curbyte>t1_size) #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") static unsigned char *enc_buffer = NULL; static int enc_size = 0; static int enc_curbyte = 0; @ @c #define enc_open(a) \ (enc_file = fopen((char *)(a), FOPEN_RBIN_MODE)) #define enc_read_file() \ readbinfile(enc_file,&enc_buffer,&enc_size) #define enc_close() xfclose(enc_file,cur_file_name) #define enc_getchar() enc_buffer[enc_curbyte++] #define enc_eof() (enc_curbyte>enc_size) #define valid_code(c) (c >= 0 && c < 256) #define fixedcontent false @ @c 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 }; @ @c static fd_entry *fd_cur; static char charstringname[] = "/CharStrings"; enum { ENC_STANDARD, ENC_BUILTIN } t1_encoding; #define T1_BUF_SIZE 0x10 #define ENC_BUF_SIZE 0x1000 @ @c #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 @ @c 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|, and |t1_line_limit| @c #define t1_line_entry char define_array(t1_line); @ define |t1_buf_ptr|, |t1_buf_array|, and |t1_buf_limit| @c #define t1_buf_entry char 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_counter, 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. @c static const char *cs_token_pairs_list[][2] = { {" RD", "NP"}, {" -|", "|"}, {" RD", "noaccess put"}, {" -|", "noaccess put"}, {NULL, NULL} }; @ @c 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; @ @c static void enc_getline(void) { char *p; char c; restart: if (enc_eof()) pdftex_fail("unexpected end of file"); p = enc_line; do { c = (char) enc_getchar(); append_char_to_buf(c, p, enc_line, ENC_BUF_SIZE); } while (c != 10 && !enc_eof()); 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()| @c char **load_enc_file(char *enc_name) { int callback_id = 0; int file_opened = 0; char buf[ENC_BUF_SIZE], *p, *r; int i, names_count; char **glyph_names; cur_file_name = luatex_find_file(enc_name, find_enc_file_callback); if (cur_file_name == NULL) { pdftex_fail("cannot find encoding file '%s' for reading", enc_name); } callback_id = callback_defined(read_enc_file_callback); enc_curbyte = 0; enc_size = 0; if (callback_id > 0) { if (run_callback(callback_id, "S->bSd", cur_file_name, &file_opened, &enc_buffer, &enc_size)) { if ((!file_opened) || enc_size == 0) { pdftex_fail("cannot open encoding file '%s' for reading", cur_file_name); } } } else { if (!enc_open(cur_file_name)) { pdftex_fail("cannot open encoding file '%s' for reading", cur_file_name); } enc_read_file(); enc_close(); } glyph_names = xtalloc(256, char *); for (i = 0; i < 256; i++) glyph_names[i] = (char *) notdef; t1_log("{"); t1_log(cur_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 >= 256) 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 (strncmp(r, "] def", strlen("] def")) == 0) 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: t1_log("}"); cur_file_name = NULL; xfree(enc_buffer); return glyph_names; } @ @c #if 0 static void free_glyph_names(char **glyph_names) { int i; assert(glyph_names != NULL); for (i = 0; i < 256; i++) if (glyph_names[i] != notdef) xfree(glyph_names[i]); xfree(glyph_names); } #endif 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()) (void) 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 = (byte) t1_getbyte(); last_hexbyte = cipher = (byte) ((hexval(cipher) << 4) + hexval(t1_getbyte())); } plain = (byte) (cipher ^ (t1_dr >> 8)); t1_dr = (unsigned short) ((cipher + t1_dr) * t1_c1 + t1_c2); return plain; } static byte cdecrypt(byte cipher, unsigned short *cr) { const byte plain = (byte) (cipher ^ (*cr >> 8)); *cr = (unsigned short) ((cipher + *cr) * t1_c1 + t1_c2); return plain; } static byte eencrypt(byte plain) { const byte cipher = (byte) (plain ^ (t1_er >> 8)); t1_er = (unsigned short) ((cipher + t1_er) * t1_c1 + t1_c2); return cipher; } static byte cencrypt(byte plain, unsigned short *cr) { const byte cipher = (byte) (plain ^ (*cr >> 8)); *cr = (unsigned short) ((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(*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; } @ @c 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); { char cc = (char) c; append_char_to_buf(cc, 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 || c == 13 || (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--; l = (int) t1_scan_num(p + 1, 0); t1_cslen = (unsigned short) l; cs_start = (int) (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++ = (t1_line_entry) 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); } @ @c static void t1_putline(PDF pdf) { char *p = t1_line_array; if (t1_line_ptr - t1_line_array <= 1) return; if (t1_eexec_encrypt) { while (p < t1_line_ptr) t1_putchar((eight_bits) eencrypt((byte) * p++)); } else while (p < t1_line_ptr) t1_putchar((eight_bits) * p++); } static void t1_puts(PDF pdf, const char *s) { if (s != t1_line_array) strcpy(t1_line_array, s); t1_line_ptr = strend(t1_line_array); t1_putline(pdf); } __attribute__ ((format(printf, 2, 3))) static void t1_printf(PDF pdf, const char *fmt, ...) { va_list args; va_start(args, fmt); vsprintf(t1_line_array, fmt, args); t1_puts(pdf, t1_line_array); va_end(args); } @ @c 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); 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 = (int) t1_block_length; if (!(l == 0 && (c == 10 || c == 13))) { pdftex_fail("%i bytes more than expected were ignored", l + 1); } } @ @c static void t1_start_eexec(PDF pdf) { int i; assert(is_included(fd_cur->fm)); 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; t1_putline(pdf); /* to put the first four bytes */ } static void t1_stop_eexec(PDF pdf) { int c; assert(is_included(fd_cur->fm)); get_length2(); save_offset(); t1_eexec_encrypt = false; 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(pdf, "00"); else pdftex_fail("unexpected data after eexec"); } } t1_cs = false; t1_in_eexec = 2; } @ macros for various transforms; unused, left for reference @c #ifdef T1TRANSFORMMACROS # define do_xshift(x,a) {x[4]+=a;} # define do_yshift(x,a) {x[5]+=a;} # define do_xscale(x,a) {x[0]*=a; x[2]*=a; x[4]*=a;} # define do_yscale(x,a) {x[1]*=a; x[3]*=a; x[5]*=a;} # define do_extend(x,a) {do_xscale(x,a);} # define do_scale(x,a) {do_xscale(x,a); do_yscale(x,a);} # define do_slant(x,a) {x[0]+=x[1]*(a); x[2]+=x[3]*(a); x[4]+=x[5]*(a);} # define do_shear(x,a) {x[1]+=x[0]*(a); x[3]+=x[2]*(a); x[5]+=x[4]*(a);} # define do_rotate(x,a) \ {float t, u=cos(a), v=sin(a); \ t =x[0]*u+x[1]*-v; \ x[1] =x[0]*v+x[1]* u; x[0]=t; \ t =x[2]*u+x[3]*-v; \ x[3] =x[2]*v+x[3]* u; x[2]=t; \ t =x[4]*u+x[5]*-v; \ x[5] =x[4]*v+x[5]* u; x[4]=t;} #endif @ @c static void t1_scan_keys(PDF pdf) { int i, k; char *p, *q, *r; const key_entry *key; if (t1_prefix("/FontType")) { p = t1_line_array + strlen("FontType") + 1; if ((i = (int) t1_scan_num(p, 0)) != 1) pdftex_fail("Type%d fonts unsupported by pdfTeX", i); return; } for (key = (const key_entry *) font_key; key - font_key < FONT_KEYS_NUM; key++) { if (key->t1name[0] != '\0' && str_prefix(t1_line_array + 1, key->t1name)) break; } if (key - font_key == FONT_KEYS_NUM) return; p = t1_line_array + strlen(key->t1name) + 1; skip(p, ' '); if ((k = (int) (key - font_key)) == FONTNAME_CODE) { if (*p != '/') { remove_eol(p, t1_line_array); pdftex_fail("a name expected: `%s'", t1_line_array); } r = ++p; /* skip the slash */ for (q = t1_buf_array; *p != ' ' && *p != 10; *q++ = *p++); *q = 0; xfree(fd_cur->fontname); fd_cur->fontname = xstrdup(t1_buf_array); /* at this moment we cannot call |make_subset_tag()| yet, as the encoding is not read; thus we mark the offset of the subset tag and write it later */ if (is_subsetted(fd_cur->fm)) { assert(is_included(fd_cur->fm)); t1_fontname_offset = (int) (t1_offset() + (r - t1_line_array)); strcpy(t1_buf_array, p); sprintf(r, "ABCDEF+%s%s", fd_cur->fontname, t1_buf_array); t1_line_ptr = eol(r); } return; } if ((k == STEMV_CODE || k == FONTBBOX1_CODE) && (*p == '[' || *p == '{')) p++; if (k == FONTBBOX1_CODE) { for (i = 0; i < 4; i++, k++) { fd_cur->font_dim[k].val = (int) t1_scan_num(p, &r); fd_cur->font_dim[k].set = true; p = r; } return; } fd_cur->font_dim[k].val = (int) t1_scan_num(p, 0); fd_cur->font_dim[k].set = true; } @ @c static void t1_scan_param(PDF pdf) { static const char *lenIV = "/lenIV"; if (!t1_scan || *t1_line_array != '/') return; if (t1_prefix(lenIV)) { t1_lenIV = (short) 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(pdf); } static void copy_glyph_names(char **glyph_names, int a, int b) { if (glyph_names[b] != notdef) { xfree(glyph_names[b]); glyph_names[b] = (char *) 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()| @c 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 = xtalloc(256, char *); for (i = 0; i < 256; i++) glyph_names[i] = (char *) notdef; if (t1_suffix("def")) { /* predefined encoding */ sscanf(t1_line_array + strlen("/Encoding"), "%256s", t1_buf_array); if (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; } else 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 {\obeylines \.{/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%256s 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; } @ @c static void t1_check_end(PDF pdf) { if (t1_eof()) return; t1_getline(); if (t1_prefix("{restore}")) t1_putline(pdf); } @ @c static boolean t1_open_fontfile(const char *open_name_prefix) { ff_entry *ff; int callback_id = 0; int file_opened = 0; t1_curbyte = 0; t1_size = 0; ff = check_ff_exist(fd_cur->fm->ff_name, is_truetype(fd_cur->fm)); if (ff->ff_path == NULL) { pdftex_fail("cannot open Type 1 font file for reading (%s)", fd_cur->fm->ff_name); return false; } cur_file_name = luatex_find_file(ff->ff_path, find_type1_file_callback); if (cur_file_name == NULL) { pdftex_fail("cannot open Type 1 font file for reading (%s)", ff->ff_path); return false; } callback_id = callback_defined(read_type1_file_callback); if (callback_id > 0) { if (!run_callback(callback_id, "S->bSd", cur_file_name, &file_opened, &t1_buffer, &t1_size) && file_opened && t1_size > 0) { pdftex_warn("cannot open Type 1 font file for reading (%s)", cur_file_name); return false; } } else { t1_file = xfopen(cur_file_name, FOPEN_RBIN_MODE); t1_read_file(); t1_close(); } recorder_record_input(cur_file_name); t1_init_params(open_name_prefix); return true; } static void t1_include(PDF pdf) { do { t1_getline(); t1_scan_param(pdf); t1_putline(pdf); } while (t1_in_eexec == 0); t1_start_eexec(pdf); do { t1_getline(); t1_scan_param(pdf); t1_putline(pdf); } while (!(t1_charstrings() || t1_subrs())); t1_cs = true; do { t1_getline(); t1_putline(pdf); } while (!t1_end_eexec()); t1_stop_eexec(pdf); if (fixedcontent) { /* copy 512 zeros (not needed for PDF) */ do { t1_getline(); t1_putline(pdf); } while (!t1_cleartomark()); t1_check_end(pdf); /* write "{restore}if" if found */ } get_length3(); } @ @c #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 = (int) 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 = (char *) 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 = (unsigned short) (t1_buf_ptr - t1_buf_array); ptr->cslen = t1_cslen; xfree(ptr->data); /* mem leak? */ ptr->data = xtalloc(ptr->len, byte); memcpy(ptr->data, t1_buf_array, ptr->len); ptr->valid = true; } @ @c #define store_subr() cs_store(true) #define store_cs() cs_store(false) #define CC_STACK_SIZE 24 static int 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; \ } #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); #if 0 set_cc(CS_ESCAPE, false, 0, false); #endif 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; } @ @c #define cs_getchar() cdecrypt(*data++, &cr) #define mark_subr(n) cs_mark(0, n) #define mark_cs(s) cs_mark(s, 0) __attribute__ ((noreturn, format(printf, 3, 4))) 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_fail("Subr (%i): %s", (int) subr, buf); else pdftex_fail("CharString (/%s): %s", cs_name, buf); } @ fix a return-less subr by appending |CS_RETURN| @c 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((unsigned) (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, (size_t) (ptr->len - ptr->cslen - 4)); /* update |*ptr| */ xfree(ptr->data); ptr->data = new_data; ptr->len++; ptr->cslen++; } @ @c static void cs_mark(const char *cs_name, int subr) { byte *data; int i, b, cs_len; int last_cmd = 0; int a, a1, a2; unsigned short cr; static int 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(int) > 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; } @ AVL search tree for glyph code by glyph name @c static int comp_t1_glyphs(const void *pa, const void *pb, void *p __attribute__ ((unused))) { return strcmp(*(const char *const *) pa, *(const char *const *) pb); } static struct avl_table *create_t1_glyph_tree(char **glyph_names) { int i; void **aa; static struct avl_table *gl_tree; gl_tree = avl_create(comp_t1_glyphs, NULL, &avl_xallocator); assert(gl_tree != NULL); for (i = 0; i < 256; i++) { if (glyph_names[i] != notdef && (char **) avl_find(gl_tree, &glyph_names[i]) == NULL) { /* no |strdup| here, just point to the |glyph_names| array members */ aa = avl_probe(gl_tree, &glyph_names[i]); assert(aa != NULL); } } return gl_tree; } static void destroy_t1_glyph_tree(struct avl_table *gl_tree) { assert(gl_tree != NULL); avl_destroy(gl_tree, NULL); } @ @c static void t1_subset_ascii_part(PDF pdf) { int j, *p; char *glyph, **gg, **glyph_names; struct avl_table *gl_tree; struct avl_traverser t; void **aa; assert(fd_cur != NULL); assert(fd_cur->gl_tree != NULL); t1_getline(); while (!t1_prefix("/Encoding")) { t1_scan_param(pdf); t1_putline(pdf); t1_getline(); } glyph_names = t1_builtin_enc(); fd_cur->builtin_glyph_names = glyph_names; if (is_subsetted(fd_cur->fm)) { assert(is_included(fd_cur->fm)); if (fd_cur->tx_tree != NULL) { /* take over collected non-reencoded characters from \TeX */ avl_t_init(&t, fd_cur->tx_tree); for (p = (int *) avl_t_first(&t, fd_cur->tx_tree); p != NULL; p = (int *) avl_t_next(&t)) { if ((char *) avl_find(fd_cur->gl_tree, glyph_names[*p]) == NULL) { glyph = xstrdup(glyph_names[*p]); aa = avl_probe(fd_cur->gl_tree, glyph); assert(aa != NULL); } } } make_subset_tag(fd_cur); assert(t1_fontname_offset != 0); strncpy(pdf->fb_array + t1_fontname_offset, fd_cur->subset_tag, 6); } /* now really all glyphs needed from this font are in the |fd_cur->gl_tree| */ if (t1_encoding == ENC_STANDARD) t1_puts(pdf, "/Encoding StandardEncoding def\n"); else { t1_puts (pdf, "/Encoding 256 array\n0 1 255 {1 index exch /.notdef put} for\n"); gl_tree = create_t1_glyph_tree(glyph_names); avl_t_init(&t, fd_cur->gl_tree); j = 0; for (glyph = (char *) avl_t_first(&t, fd_cur->gl_tree); glyph != NULL; glyph = (char *) avl_t_next(&t)) { if ((gg = (char **) avl_find(gl_tree, &glyph)) != NULL) { t1_printf(pdf, "dup %i /%s put\n", (int) (gg - glyph_names), *gg); j++; } } destroy_t1_glyph_tree(gl_tree); 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(pdf, "dup 0 /.notdef put\n"); t1_puts(pdf, "readonly def\n"); } do { t1_getline(); t1_scan_param(pdf); if (!t1_prefix("/UniqueID")) /* ignore UniqueID for subsetted fonts */ t1_putline(pdf); } while (t1_in_eexec == 0); } @ @c static void cs_init(void) { cs_ptr = cs_tab = NULL; cs_dict_start = cs_dict_end = NULL; cs_counter = 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; } @ @c static void t1_read_subrs(PDF pdf) { int i, s; cs_entry *ptr; t1_getline(); while (!(t1_charstrings() || t1_subrs())) { t1_scan_param(pdf); if (!t1_prefix("/UniqueID")) /* ignore UniqueID for subsetted fonts */ t1_putline(pdf); 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 = (int) t1_scan_num(t1_line_array + subr_size_pos, 0); if (subr_size == 0) { while (!t1_charstrings()) t1_getline(); return; } subr_tab = xtalloc((unsigned) 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 concatenate 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 = (int) (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; } } @ @c #define t1_subr_flush() t1_flush_cs(pdf, true) #define t1_cs_flush() t1_flush_cs(pdf, false) static void t1_flush_cs(PDF pdf, 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; 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_counter; } t1_line_ptr = t1_line_array; for (p = start_line; p - start_line < size_pos;) *t1_line_ptr++ = *p++; while (isdigit(*p)) p++; sprintf(t1_line_ptr, "%u", count); strcat(t1_line_ptr, p); t1_line_ptr = eol(t1_line_array); t1_putline(pdf); cs_len = 0; /* for -Wall */ /* create |return_cs| to replace unsused 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((unsigned) (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 %li %u", (long int) (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(pdf); } else { /* replace unsused subr's by |return_cs| */ if (is_subr) { sprintf(t1_line_array, "dup %li %u%s ", (long int) (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(pdf); sprintf(t1_line_array, " %s", cs_token_pair[1]); t1_line_ptr = eol(t1_line_array); t1_putline(pdf); } } 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(pdf); if (is_subr) xfree(return_cs); xfree(tab); xfree(start_line); xfree(line_end); } @ @c static void t1_mark_glyphs(void) { char *glyph; struct avl_traverser t; cs_entry *ptr; if (t1_synthetic || fd_cur->all_glyphs) { /* 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); avl_t_init(&t, fd_cur->gl_tree); for (glyph = (char *) avl_t_first(&t, fd_cur->gl_tree); glyph != NULL; glyph = (char *) avl_t_next(&t)) { mark_cs(glyph); } 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 = (int) (ptr - subr_tab); } @ When |t1_subset_charstrings| is called, the |t1_line_array| contains \.{/CharStrings}. When we hit a case like this: {\obeylines \tt dup/CharStrings 229 dict dup begin } we read the next line and concatenate to |t1_line_array| before moving on. That is what |t1_check_unusual_charstring| is for. @c 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) { strcpy(t1_buf_array, t1_line_array); t1_getline(); strcat(t1_buf_array, t1_line_array); strcpy(t1_line_array, t1_buf_array); t1_line_ptr = eol(t1_line_array); } } static void t1_subset_charstrings(PDF pdf) { cs_entry *ptr; t1_check_unusual_charstring(); cs_size_pos = (int) (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 = (int) t1_scan_num(t1_line_array + cs_size_pos, 0); cs_ptr = cs_tab = xtalloc((unsigned) 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_counter = 0, ptr = cs_tab; ptr < cs_ptr; ptr++) if (ptr->used) cs_counter++; t1_cs_flush(); } @ @c static void t1_subset_end(PDF pdf) { if (t1_synthetic) { /* copy to \.{dup /FontName get exch definefont pop} */ while (!strstr(t1_line_array, "definefont")) { t1_getline(); t1_putline(pdf); } while (!t1_end_eexec()) t1_getline(); /* ignore the rest */ t1_putline(pdf); /* write \.{mark currentfile closefile} */ } else while (!t1_end_eexec()) { /* copy to \.{mark currentfile closefile} */ t1_getline(); t1_putline(pdf); } t1_stop_eexec(pdf); if (fixedcontent) { /* copy 512 zeros (not needed for PDF) */ while (!t1_cleartomark()) { t1_getline(); t1_putline(pdf); } if (!t1_synthetic) /* don't check \.{{restore}if} for synthetic fonts */ t1_check_end(pdf); /* write \.{{restore}if} if found */ } get_length3(); } @ @c void writet1(PDF pdf, fd_entry * fd) { fd_cur = fd; /* |fd_cur| is global inside \.{writet1.w} */ assert(fd_cur->fm != NULL); assert(is_type1(fd->fm)); assert(is_included(fd->fm)); t1_save_offset = 0; if (!is_subsetted(fd_cur->fm)) { /* include entire font */ if (!(fd->ff_found = t1_open_fontfile("<<"))) return; t1_include(pdf); t1_close_font_file(">>"); xfree(t1_buffer); return; } /* partial downloading */ if (!(fd->ff_found = t1_open_fontfile("<"))) return; t1_subset_ascii_part(pdf); t1_start_eexec(pdf); cc_init(); cs_init(); t1_read_subrs(pdf); t1_subset_charstrings(pdf); t1_subset_end(pdf); t1_close_font_file(">"); xfree(t1_buffer); } @ @c void t1_free(void) { xfree(t1_line_array); xfree(t1_buf_array); }