Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 606 insertions, 0 deletions

diff --git a/nx-X11/extras/ttf2pt1/t1asm.c b/nx-X11/extras/ttf2pt1/t1asm.c
new file mode 100644
index 000000000..cf13f2005
--- /dev/null
+++ b/nx-X11/extras/ttf2pt1/t1asm.c
@@ -0,0 +1,606 @@
+/* t1asm
+ *
+ * This program `assembles' Adobe Type-1 font programs in pseudo-PostScript
+ * form into either PFB or PFA format.  The human readable/editable input is
+ * charstring- and eexec-encrypted as specified in the `Adobe Type 1 Font
+ * Format' version 1.1 (the `black book').  There is a companion program,
+ * t1disasm, which `disassembles' PFB and PFA files into a pseudo-PostScript
+ * file.
+ *
+ * Copyright (c) 1992 by I. Lee Hetherington, all rights reserved.
+ *
+ * Permission is hereby granted to use, modify, and distribute this program
+ * for any purpose provided this copyright notice and the one below remain
+ * intact.
+ *
+ * I. Lee Hetherington (ilh@lcs.mit.edu)
+ *
+ * Revision 1.2  92/05/22  11:54:45  ilh
+ * Fixed bug where integers larger than 32000 could not be encoded in
+ * charstrings.  Now integer range is correct for four-byte
+ * twos-complement integers: -(1<<31) <= i <= (1<<31)-1.  Bug detected by
+ * Piet Tutelaers (rcpt@urc.tue.nl).
+ *
+ * Revision 1.1  92/05/22  11:48:46  ilh
+ * initial version
+ *
+ * Ported to Microsoft C/C++ Compiler and MS-DOS operating system by
+ * Kai-Uwe Herbing (herbing@netmbx.netmbx.de) on June 12, 1992. Code
+ * specific to the MS-DOS version is encapsulated with #ifdef _MSDOS
+ * ... #endif, where _MSDOS is an identifier, which is automatically
+ * defined, if you compile with the Microsoft C/C++ Compiler.
+ *
+ */
+
+#ifndef lint
+static char copyright[] =
+  "@(#) Copyright (c) 1992 by I. Lee Hetherington, all rights reserved.";
+#ifdef _MSDOS
+static char portnotice[] =
+  "@(#) Ported to MS-DOS by Kai-Uwe Herbing (herbing@netmbx.netmbx.de).";
+#endif
+#endif
+
+/* Note: this is ANSI C. */
+
+#ifdef _MSDOS
+  #include <fcntl.h>
+  #include <getopt.h>
+  #include <io.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <limits.h>
+
+#ifdef WINDOWS
+#	ifdef STANDALONE
+#		define WINDOWS_FUNCTIONS
+#		include "windows.h"
+#	endif
+#endif
+
+/* int32 must be at least 32-bit and uint16 must be at least 16-bit */
+#ifndef AIXV3
+#if INT_MAX >= 0x7FFFFFFFUL
+typedef int int32;
+#else
+typedef long int32;
+#endif
+#endif /* !AIXV3 */
+#if USHRT_MAX >= 0xFFFFUL
+typedef unsigned short uint16;
+#else
+typedef unsigned int uint16;
+#endif
+
+#define LINESIZE 256
+
+#define MAXBLOCKLEN ((1L<<17)-6)
+#define MINBLOCKLEN ((1L<<8)-6)
+
+#define MARKER   128
+#define ASCII    1
+#define BINARY   2
+#define DONE     3
+
+typedef unsigned char byte;
+
+/* must be visible from outside */
+FILE *ifp;
+FILE *ofp;
+
+/* flags */
+static int pfb = 0;
+static int active = 0;
+static int start_charstring = 0;
+static int in_eexec = 0;
+
+static char line[LINESIZE];
+
+/* lenIV and charstring start command */
+static int lenIV = 4;
+static char cs_start[10];
+
+/* for charstring buffering */
+static byte charstring_buf[65535];
+static byte *charstring_bp;
+
+/* for PFB block buffering */
+static byte blockbuf[MAXBLOCKLEN];
+static int32 blocklen = MAXBLOCKLEN;
+static int32 blockpos = -1;
+static int blocktyp = ASCII;
+
+/* decryption stuff */
+static uint16 er, cr;
+static uint16 c1 = 52845, c2 = 22719;
+
+/* table of charstring commands */
+static struct command {
+  char *name;
+  int one, two;
+} command_table[] = {
+  { "callothersubr", 12, 16 },
+  { "callsubr", 10, -1 },
+  { "closepath", 9, -1 },
+  { "div", 12, 12 },
+  { "dotsection", 12, 0 },
+  { "endchar", 14, -1 },
+  { "hlineto", 6, -1 },
+  { "hmoveto", 22, -1 },
+  { "hsbw", 13, -1 },
+  { "hstem", 1, -1 },
+  { "hstem3", 12, 2 },
+  { "hvcurveto", 31, -1 },
+  { "pop", 12, 17 },
+  { "return", 11, -1 },
+  { "rlineto", 5, -1 },
+  { "rmoveto", 21, -1 },
+  { "rrcurveto", 8, -1 },
+  { "sbw", 12, 7 },
+  { "seac", 12, 6 },
+  { "setcurrentpoint", 12, 33 },
+  { "vhcurveto", 30, -1 },
+  { "vlineto", 7, -1 },
+  { "vmoveto", 4, -1 },
+  { "vstem", 3, -1 },
+  { "vstem3", 12, 1 },
+};                                                /* alphabetical */
+
+/* Two separate encryption functions because eexec and charstring encryption
+   must proceed in parallel. */
+
+static byte eencrypt(byte plain)
+{
+  byte cipher;
+
+  cipher = (byte) (plain ^ (er >> 8));
+  er = (uint16) ((cipher + er) * c1 + c2);
+  return cipher;
+}
+
+static byte cencrypt(byte plain)
+{
+  byte cipher;
+
+  cipher = (byte) (plain ^ (cr >> 8));
+  cr = (uint16) ((cipher + cr) * c1 + c2);
+  return cipher;
+}
+
+/* This function flushes a buffered PFB block. */
+
+static void output_block()
+{
+  int32 i;
+
+  /* output four-byte block length */
+  fputc((int) (blockpos & 0xff), ofp);
+  fputc((int) ((blockpos >> 8) & 0xff), ofp);
+  fputc((int) ((blockpos >> 16) & 0xff), ofp);
+  fputc((int) ((blockpos >> 24) & 0xff), ofp);
+
+  /* output block data */
+  for (i = 0; i < blockpos; i++)
+    fputc(blockbuf[i], ofp);
+
+  /* mark block buffer empty and uninitialized */
+  blockpos =  -1;
+}
+
+/* This function outputs a single byte.  If output is in PFB format then output
+   is buffered through blockbuf[].  If output is in PFA format, then output
+   will be hexadecimal if in_eexec is set, ASCII otherwise. */
+
+static void output_byte(byte b)
+{
+  static char *hexchar = "0123456789ABCDEF";
+  static int hexcol = 0;
+
+  if (pfb) {
+    /* PFB */
+    if (blockpos < 0) {
+      fputc(MARKER, ofp);
+      fputc(blocktyp, ofp);
+      blockpos = 0;
+    }
+    blockbuf[blockpos++] = b;
+    if (blockpos == blocklen)
+      output_block();
+  } else {
+    /* PFA */
+    if (in_eexec) {
+      /* trim hexadecimal lines to 64 columns */
+      if (hexcol >= 64) {
+        fputc('\n', ofp);
+        hexcol = 0;
+      }
+      fputc(hexchar[(b >> 4) & 0xf], ofp);
+      fputc(hexchar[b & 0xf], ofp);
+      hexcol += 2;
+    } else {
+      fputc(b, ofp);
+    }
+  }
+}
+
+/* This function outputs a byte through possible eexec encryption. */
+
+static void eexec_byte(byte b)
+{
+  if (in_eexec)
+    output_byte(eencrypt(b));
+  else
+    output_byte(b);
+}
+
+/* This function outputs a null-terminated string through possible eexec
+   encryption. */
+
+static void eexec_string(char *string)
+{
+  while (*string)
+    eexec_byte((byte) *string++);
+}
+
+/* This function gets ready for the eexec-encrypted data.  If output is in
+   PFB format then flush current ASCII block and get ready for binary block.
+   We start encryption with four random (zero) bytes. */
+
+static void eexec_start()
+{
+  eexec_string(line);
+  if (pfb) {
+    output_block();
+    blocktyp = BINARY;
+  }
+
+  in_eexec = 1;
+  er = 55665;
+  eexec_byte(0);
+  eexec_byte(0);
+  eexec_byte(0);
+  eexec_byte(0);
+}
+
+/* This function wraps-up the eexec-encrypted data.
+   If output is in PFB format then this entails flushing binary block and
+   starting an ASCII block. */
+
+static void eexec_end()
+{
+  int i, j;
+
+  if (pfb) {
+    output_block();
+    blocktyp = ASCII;
+  } else {
+    fputc('\n', ofp);
+  }
+  in_eexec = 0;
+  for (i = 0; i < 8; i++) {
+    for (j = 0; j < 64; j++)
+      eexec_byte('0');
+    eexec_byte('\n');
+  }
+#if 0
+  eexec_string("cleartomark\n");
+#endif
+}
+
+/* This function writes ASCII trailer.
+   If output is in PFB format then this entails flushing binary block and
+   starting an ASCII block. */
+
+static void file_end()
+{
+  if (pfb) {
+    output_block();
+    fputc(MARKER, ofp);
+    fputc(DONE, ofp);
+  }
+}
+/* This function returns an input line of characters.  A line is terminated by
+   length (including terminating null) greater than LINESIZE, a newline \n, or
+   when active (looking for charstrings) by '{'.  When terminated by a newline
+   the newline is put into line[].  When terminated by '{', the '{' is not put
+   into line[], and the flag start_charstring is set to 1. */
+
+static void t1asm_getline()
+{
+  int c;
+  char *p = line;
+  int comment = 0;
+
+  start_charstring = 0;
+  while (p < line + LINESIZE) {
+    c = fgetc(ifp);
+    if (c == EOF)
+      break;
+    if (c == '%')
+      comment = 1;
+    if (active && !comment && c == '{') {
+      start_charstring = 1;
+      break;
+    }
+    *p++ = (char) c;
+    if (c == '\n')
+      break;
+  }
+  *p = '\0';
+}
+
+/* This function is used by the binary search, bsearch(), for command names in
+   the command table. */
+
+static int command_compare(const void *key, const void *item)
+{
+  return strcmp((char *) key, ((struct command *) item)->name);
+}
+
+/* This function returns 1 if the string is an integer and 0 otherwise. */
+
+static int is_integer(char *string)
+{
+  if (isdigit(string[0]) || string[0] == '-' || string[0] == '+') {
+    while (*++string && isdigit(*string))
+      ;                                           /* deliberately empty */
+    if (!*string)
+      return 1;
+  }
+  return 0;
+}
+
+/* This function initializes charstring encryption.  Note that this is called
+   at the beginning of every charstring. */
+
+static void charstring_start()
+{
+  int i;
+
+  charstring_bp = charstring_buf;
+  cr = 4330;
+  for (i = 0; i < lenIV; i++)
+    *charstring_bp++ = cencrypt((byte) 0);
+}
+
+/* This function encrypts and buffers a single byte of charstring data. */
+
+static void charstring_byte(int v)
+{
+  byte b = (byte) (v & 0xff);
+
+  if (charstring_bp - charstring_buf > sizeof(charstring_buf)) {
+    fprintf(stderr, "error: charstring_buf full (%d bytes)\n",
+            sizeof(charstring_buf));
+    exit(1);
+  }
+  *charstring_bp++ = cencrypt(b);
+}
+
+/* This function outputs buffered, encrypted charstring data through possible
+   eexec encryption. */
+
+static void charstring_end()
+{
+  byte *bp;
+
+  sprintf(line, "%d ", charstring_bp - charstring_buf);
+  eexec_string(line);
+  sprintf(line, "%s ", cs_start);
+  eexec_string(line);
+  for (bp = charstring_buf; bp < charstring_bp; bp++)
+    eexec_byte(*bp);
+}
+
+/* This function generates the charstring representation of an integer. */
+
+static void charstring_int(int num)
+{
+  int x;
+
+  if (num >= -107 && num <= 107) {
+    charstring_byte(num + 139);
+  } else if (num >= 108 && num <= 1131) {
+    x = num - 108;
+    charstring_byte(x / 256 + 247);
+    charstring_byte(x % 256);
+  } else if (num >= -1131 && num <= -108) {
+    x = abs(num) - 108;
+    charstring_byte(x / 256 + 251);
+    charstring_byte(x % 256);
+  } else if (num >= (-2147483647-1) && num <= 2147483647) {
+    charstring_byte(255);
+    charstring_byte(num >> 24);
+    charstring_byte(num >> 16);
+    charstring_byte(num >> 8);
+    charstring_byte(num);
+  } else {
+    fprintf(stderr,
+            "error: cannot format the integer %d, too large\n", num);
+    exit(1);
+  }
+}
+
+/* This function parses an entire charstring into integers and commands,
+   outputting bytes through the charstring buffer. */
+
+static void parse_charstring()
+{
+  struct command *cp;
+
+  charstring_start();
+  while (fscanf(ifp, "%s", line) == 1) {
+    if (line[0] == '%') {
+      /* eat comment to end of line */
+      while (fgetc(ifp) != '\n' && !feof(ifp))
+        ;                                         /* deliberately empty */
+      continue;
+    }
+    if (line[0] == '}')
+      break;
+    if (is_integer(line)) {
+      charstring_int(atoi(line));
+    } else {
+      cp = (struct command *)
+        bsearch((void *) line, (void *) command_table,
+                sizeof(command_table) / sizeof(struct command),
+                sizeof(struct command),
+                command_compare);
+      if (cp) {
+        charstring_byte(cp->one);
+        if (cp->two >= 0)
+          charstring_byte(cp->two);
+      } else {
+        fprintf(stderr, "error: cannot use `%s' in charstring\n",line);
+        exit(1);
+      }
+    }
+  }
+  charstring_end();
+}
+
+static void usage()
+{
+  fprintf(stderr,
+          "usage: t1asm [-b] [-l block-length] [input [output]]\n");
+  fprintf(stderr,
+          "\n-b means output in PFB format, otherwise PFA format.\n");
+  fprintf(stderr,
+          "The block length applies to the length of blocks in the\n");
+  fprintf(stderr,
+          "PFB output file; the default is to use the largest possible.\n");
+  exit(1);
+}
+
+static void print_banner()
+{
+  static char rcs_revision[] = ""; /* removed RCS */
+  static char revision[20];
+
+  if (sscanf(rcs_revision, "$Revision: %19s", revision) != 1)
+    revision[0] = '\0';
+  fprintf(stderr, "This is t1asm %s.\n", revision);
+}
+
+#ifdef STANDALONE
+int main(int argc, char **argv)
+{
+  char *p, *q, *r;
+  int c;
+
+  extern char *optarg;
+  extern int optind;
+
+  ifp = stdin;
+  ofp = stdout;
+
+  print_banner();
+
+  /* interpret command line arguments using getopt */
+  while ((c = getopt(argc, argv, "bl:")) != -1)
+    switch (c) {
+    case 'b':
+      pfb = 1;
+      break;
+    case 'l':
+      blocklen = atoi(optarg);
+      if (blocklen < MINBLOCKLEN) {
+        blocklen = MINBLOCKLEN;
+        fprintf(stderr,
+                "warning: using minimum block length of %d\n",
+                blocklen);
+      } else if (blocklen > MAXBLOCKLEN) {
+        blocklen = MAXBLOCKLEN;
+        fprintf(stderr,
+                "warning: using maximum block length of %d\n",
+                blocklen);
+      }
+      break;
+    default:
+      usage();
+      break;
+    }
+  if (argc - optind > 2)
+    usage();
+
+  /* possibly open input & output files */
+  if (argc - optind >= 1) {
+    ifp = fopen(argv[optind], "r");
+    if (!ifp) {
+      fprintf(stderr, "error: cannot open %s for reading\n", argv[1]);
+      exit(1);
+    }
+  }
+  if (argc - optind >= 2) {
+    ofp = fopen(argv[optind + 1], "w");
+    if (!ofp) {
+      fprintf(stderr, "error: cannot open %s for writing\n", argv[2]);
+      exit(1);
+    }
+  }
+
+#else
+int runt1asm(int pfbflag)
+{
+  char *p, *q, *r;
+
+  pfb = pfbflag;
+#endif
+
+  #ifdef _MSDOS
+    /* If we are processing a PFB (binary) output */
+    /* file, we must set its file mode to binary. */
+    if (pfb)
+      _setmode(_fileno(ofp), _O_BINARY);
+  #endif
+
+  /* Finally, we loop until no more input.  Some special things to look for
+     are the `currentfile eexec' line, the beginning of the `/Subrs'
+     definition, the definition of `/lenIV', and the definition of the
+     charstring start command which has `...string currentfile...' in it. */
+
+  while (!feof(ifp) && !ferror(ifp)) {
+    t1asm_getline();
+    if (strcmp(line, "currentfile eexec\n") == 0) {
+      eexec_start();
+      continue;
+    } else if (strstr(line, "/Subrs") && isspace(line[6])) {
+      active = 1;
+    } else if ((p = strstr(line, "/lenIV"))) {
+      sscanf(p, "%*s %d", &lenIV);
+    } else if ((p = strstr(line, "string currentfile"))) {
+      /* locate the name of the charstring start command */
+      *p = '\0';                                  /* damage line[] */
+      q = strrchr(line, '/');
+      if (q) {
+        r = cs_start;
+        ++q;
+        while (!isspace(*q) && *q != '{')
+          *r++ = *q++;
+        *r = '\0';
+      }
+      *p = 's';                                   /* repair line[] */
+    }
+    /* output line data */
+    eexec_string(line);
+	if ((p = strstr(line, "currentfile closefile"))) {
+		eexec_end();
+	}
+    if (start_charstring) {
+      if (!cs_start[0]) {
+        fprintf(stderr, "error: couldn't find charstring start command\n");
+        exit(1);
+      }
+      parse_charstring();
+    }
+  }
+  file_end();
+
+  fclose(ifp);
+  fclose(ofp);
+
+  return 0;
+}