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Diffstat (limited to 'Build/source/texk/web2c/luatexdir/font/writet1.w')
-rw-r--r-- | Build/source/texk/web2c/luatexdir/font/writet1.w | 1726 |
1 files changed, 1726 insertions, 0 deletions
diff --git a/Build/source/texk/web2c/luatexdir/font/writet1.w b/Build/source/texk/web2c/luatexdir/font/writet1.w new file mode 100644 index 00000000000..69ac40bac04 --- /dev/null +++ b/Build/source/texk/web2c/luatexdir/font/writet1.w @@ -0,0 +1,1726 @@ +% writet1.w +% +% Copyright 1996-2006 Han The Thanh <thanh@@pdftex.org> +% Copyright 2006-2009 Taco Hoekwater <taco@@luatex.org> +% +% 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 <http://www.gnu.org/licenses/>. + +@ @c +static const char _svn_version[] = + "$Id: writet1.w 3584 2010-04-02 17:45:55Z hhenkel $ " +"$URL: http://foundry.supelec.fr/svn/luatex/tags/beta-0.60.0/source/texk/web2c/luatexdir/font/writet1.w $"; + +#include "ptexlib.h" +#include <string.h> + +#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 for reading"); + } + 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 for reading"); + } + } + } else { + if (!enc_open(cur_file_name)) { + pdftex_fail("cannot open encoding file for reading"); + } + 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 +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); +} + + +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 +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 <index> <glyph> 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 <to> exch <from> 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 <from> <size> getinterval <to> 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); +} + +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; +} + +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); +} + + +@ +@c +static void t1_subset_charstrings(PDF pdf) +{ + cs_entry *ptr; + 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); +} |