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2862 lines
61 KiB
C
2862 lines
61 KiB
C
/* dt2dv - convert human-readable "DTL" file to DVI format
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- this is intended to invert dv2dt version 0.6.0
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This file is public domain.
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Originally written 1995, Geoffrey Tobin.
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The author has expressed the hope that any modification will retain enough content to remain useful. He would also appreciate being acknowledged as the original author in the documentation.
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This declaration added 2008/11/14 by Clea F. Rees with the permission of Geoffrey Tobin.
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- version 0.6.3 - 2020
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- Geoffrey Tobin G.Tobin@ee.latrobe.edu.au
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- fixes: Michal Tomczak-Jaegermann ntomczak@vm.ucs.ualberta.ca
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Nelson H. F. Beebe beebe@math.utah.edu
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Angus Leeming leeming@lyx.org: Enable dt2dv to handle .dvi files
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containing strings longer than 1024 chars.
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Enrico Forestieri forenr@lyx.org: handle non-ASCII characters.
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Juergen Spitzmueller spitz@lyx.org: fix compiler warnings
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- Reference: "The DVI Driver Standard, Level 0",
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by The TUG DVI Driver Standards Committee.
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Appendix A, "Device-Independent File Format".
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*/
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/* unix version; read from stdin, write to stdout, by default. */
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#include <ctype.h>
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#include <errno.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "dtl.h"
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/* by default, read and write regular files */
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int rd_stdin = 0;
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int wr_stdout = 0;
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/* maximum number of characters in a DTL input line */
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#define MAXLINE 1024
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/* input line */
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typedef struct
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{
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COUNT num; /* current line number */
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size_t max; /* capacity of buf */
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U4 wrote; /* number of characters written into buf */
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size_t read; /* position in buf of next character to read from buf */
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char * buf; /* line buffer */
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} Line;
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char linebuf[MAXLINE+1];
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Line dtl_line = {0, 0, 0, MAXLINE, linebuf};
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/* a DTL token either is:
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a quoted string (admitting an escape character),
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or BCOM (if that is a nonempty string),
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or ECOM (if that is a nonempty string),
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or a string _not_ including ECOM_CHAR or space.
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*/
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/* maximum expected length of a DTL token */
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#define MAXTOKLEN 255
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typedef char Token[MAXTOKLEN+1];
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typedef unsigned char Byte;
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typedef char Boolean;
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#define true 1
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#define false 0
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/* command prefixes */
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typedef struct
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{
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Byte first_code;
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char * name;
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Boolean has_suffix;
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Byte first_suffix, last_suffix;
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} CmdPrefix;
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CmdPrefix cmd_prefixes [] =
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{
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{0, SETCHAR, true, 0, 127},
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{128, SET, true, 1, 4},
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{132, SETRULE, false, 0, 0},
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{133, PUT, true, 1, 4},
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{137, PUTRULE, false, 0, 0},
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{138, NOP, false, 0, 0},
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{139, BOP, false, 0, 0},
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{140, EOP, false, 0, 0},
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{141, PUSH, false, 0, 0},
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{142, POP, false, 0, 0},
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{143, RIGHT, true, 1, 4},
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{147, W, true, 0, 4},
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{152, X, true, 0, 4},
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{157, DOWN, true, 1, 4},
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{161, Y, true, 0, 4},
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{166, Z, true, 0, 4},
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{171, FONTNUM, true, 0, 63},
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{235, FONT, true, 1, 4},
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{239, SPECIAL, true, 1, 4},
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{243, FONTDEF, true, 1, 4},
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{247, PRE, false, 0, 0},
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{248, POST, false, 0, 0},
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{249, POSTPOST, false, 0, 0},
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{250, OPCODE, true, 250, 255}
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};
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/* cmd_prefixes[] */
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/* Number of DVI commands, including those officially undefined */
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#define NCMDS 256
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/* table of command name (string) pointers */
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typedef char * CmdTable [NCMDS];
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/* initially all command name pointers are NULL */
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CmdTable cmd_table;
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/* operation's opcode, name, number of args, string of arguments. */
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typedef struct
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{
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int code;
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char * name;
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int nargs;
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char * args;
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} op_info;
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/* name of table, first opcode, last opcode, pointer to opcode info. */
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typedef struct
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{
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char * name;
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int first;
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int last;
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op_info * list;
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} op_table;
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/* Table for opcodes 128 to 170 inclusive. */
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op_info op_info_128_170 [] =
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{
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{128, SET1, 1, "1"},
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{129, SET2, 1, "2"},
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{130, SET3, 1, "3"},
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{131, SET4, 1, "-4"},
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{132, SETRULE, 2, "-4 -4"},
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{133, PUT1, 1, "1"},
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{134, PUT2, 1, "2"},
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{135, PUT3, 1, "3"},
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{136, PUT4, 1, "-4"},
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{137, PUTRULE, 2, "-4 -4"},
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{138, NOP, 0, ""},
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/* bop: not counting last argument, a signed address: */
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{139, BOP, 10, "-4 -4 -4 -4 -4 -4 -4 -4 -4 -4"},
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{140, EOP, 0, ""},
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{141, PUSH, 0, ""},
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{142, POP, 0, ""},
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{143, RIGHT1, 1, "-1"},
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{144, RIGHT2, 1, "-2"},
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{145, RIGHT3, 1, "-3"},
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{146, RIGHT4, 1, "-4"},
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{147, W0, 0, ""},
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{148, W1, 1, "-1"},
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{149, W2, 1, "-2"},
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{150, W3, 1, "-3"},
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{151, W4, 1, "-4"},
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{152, X0, 0, ""},
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{153, X1, 1, "-1"},
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{154, X2, 1, "-2"},
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{155, X3, 1, "-3"},
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{156, X4, 1, "-4"},
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{157, DOWN1, 1, "-1"},
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{158, DOWN2, 1, "-2"},
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{159, DOWN3, 1, "-3"},
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{160, DOWN4, 1, "-4"},
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{161, Y0, 0, ""},
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{162, Y1, 1, "-1"},
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{163, Y2, 1, "-2"},
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{164, Y3, 1, "-3"},
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{165, Y4, 1, "-4"},
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{166, Z0, 0, ""},
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{167, Z1, 1, "-1"},
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{168, Z2, 1, "-2"},
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{169, Z3, 1, "-3"},
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{170, Z4, 1, "-4"}
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};
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/* op_info op_info_128_170 [] */
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op_table op_128_170 = {"op_128_170", 128, 170, op_info_128_170};
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/* Table for fnt1 to fnt4 (opcodes 235 to 238) inclusive. */
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op_info fnt_n [] =
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{
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{235, FONT1, 1, "1"},
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{236, FONT2, 1, "2"},
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{237, FONT3, 1, "3"},
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{238, FONT4, 1, "-4"}
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};
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/* op_info fnt_n [] */
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op_table fnt = {FONT, 235, 238, fnt_n};
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/* Function prototypes */
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Void mem_viol ARGS((int sig));
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Void give_help (VOID);
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int parse ARGS((char * s));
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Void process ARGS((char * s));
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Void no_op (VOID);
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Void dtl_stdin (VOID);
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Void dvi_stdout (VOID);
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int open_dtl ARGS((char * dtl_file, FILE ** pdtl));
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int open_dvi ARGS((char * dvi_file, FILE ** pdvi));
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int dt2dv ARGS((FILE * dtl, FILE * dvi));
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Void * gmalloc ARGS((long int size));
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Void dinfo (VOID);
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Void dexit ARGS((int n));
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int cons_cmds ARGS((int nprefixes, CmdPrefix * prefix, CmdTable cmds));
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Void free_cmds ARGS((CmdTable cmd_table));
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int get_line ARGS((FILE * fp, Line * line, int max));
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int read_line_char ARGS((FILE * fp, int * ch));
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int read_char ARGS((FILE * fp, int * ch));
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int unread_char (VOID);
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int read_string_char ARGS((FILE * fp, int * ch));
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COUNT read_variety ARGS((FILE * dtl));
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COUNT read_token ARGS((FILE * dtl, char * token));
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COUNT skip_space ARGS((FILE * fp, int * ch));
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COUNT read_misc ARGS((FILE * fp, Token token));
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COUNT read_mes ARGS((FILE * fp, char * token));
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int find_command ARGS((char * command, int * opcode));
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int xfer_args ARGS((FILE * dtl, FILE * dvi, int opcode));
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int set_seq ARGS((FILE * dtl, FILE * dvi));
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int check_byte ARGS((int byte));
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int put_byte ARGS((int onebyte, FILE * dvi));
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U4 xfer_hex ARGS((int n, FILE * dtl, FILE * dvi));
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U4 xfer_oct ARGS((int n, FILE * dtl, FILE * dvi));
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U4 xfer_unsigned ARGS((int n, FILE * dtl, FILE * dvi));
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S4 xfer_signed ARGS((int n, FILE * dtl, FILE * dvi));
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int check_bmes ARGS((FILE * dtl));
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int check_emes ARGS((FILE * dtl));
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Void init_Lstring ARGS((Lstring * lsp, long int n));
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Void de_init_Lstring ARGS((Lstring * lsp));
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Lstring * alloc_Lstring ARGS((long int n));
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Void free_Lstring ARGS((Lstring * lstr));
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Void ls_putb ARGS((int ch, Lstring * lstr));
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S4 get_Lstring ARGS((FILE * dtl, Lstring * lstr));
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Void put_Lstring ARGS((const Lstring * lstr, FILE * dvi));
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U4 xfer_len_string ARGS((int n, FILE * dtl, FILE * dvi));
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U4 get_unsigned ARGS((FILE * dtl));
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S4 get_signed ARGS((FILE * dtl));
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int put_unsigned ARGS((int n, U4 unum, FILE * dvi));
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int put_signed ARGS((int n, S4 snum, FILE * dvi));
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S4 xfer_bop_address ARGS((FILE * dtl, FILE * dvi));
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S4 xfer_postamble_address ARGS((FILE * dtl, FILE * dvi));
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int put_table ARGS((op_table table, int opcode, FILE * dtl, FILE * dvi));
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U4 special ARGS((FILE * dtl, FILE * dvi, int n));
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int fontdef ARGS((FILE * dtl, FILE * dvi, int n));
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U4 preamble ARGS((FILE * dtl, FILE * dvi));
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int postamble ARGS((FILE * dtl, FILE * dvi));
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int post_post ARGS((FILE * dtl, FILE * dvi));
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typedef struct
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{
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char * keyword; /* command line option keyword */
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int * p_var; /* pointer to option variable */
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char * desc; /* description of keyword and value */
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Void (* p_fn) (VOID); /* pointer to function called when option is set */
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} Options;
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Options opts[] =
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{
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{"-debug", &debug, "detailed debugging", no_op},
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{"-group", &group, "each DTL command is in parentheses", no_op},
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{"-si", &rd_stdin, "read all DTL commands from standard input", dtl_stdin},
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{"-so", &wr_stdout, "write all DVI commands to standard output", dvi_stdout},
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{NULL, NULL, NULL, NULL}
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};
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/* opts[] */
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char * progname = ""; /* intended for name of this program */
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int nfile = 0; /* number of filename arguments on the command line */
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#define PRINT_PROGNAME fprintf (stderr, "%s ", progname)
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/* Harbison & Steele (1991) warn that some C implementations */
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/* of free() do not treat NULL pointers correctly. */
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#define gfree(p) {if (p) free (p);}
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FILE * dtl_fp = NULL;
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FILE * dvi_fp = NULL;
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char * dtl_filename = "";
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char * dvi_filename = "";
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int
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main
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#ifdef STDC
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(int argc, char * argv[])
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#else
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(argc, argv)
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int argc;
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char * argv[];
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#endif
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{
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Void (*handler) ARGS((int)); /* Previous signal handler */
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int i;
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progname = argv[0]; /* name of this program */
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/* memory violation signal handler */
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handler = (Void (*) ARGS((int))) signal (SIGSEGV, mem_viol);
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#ifndef __DATE__
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#define __DATE__ ""
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#endif
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#ifndef __TIME__
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#define __TIME__ ""
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#endif
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#if STDC
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#define C_LEVEL ""
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#else /* NOT STDC */
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#define C_LEVEL "non-"
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#endif /* NOT STDC */
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/* message about program and compiler */
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/* NB: LTU EE's Sun/OS library is BSD, even though gcc 2.2.2 is ANSI */
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fprintf (stderr, "\n");
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fprintf (stderr,
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"Program \"%s\" version %s compiled %s %s in %sstandard C.\n",
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progname, VERSION, __DATE__, __TIME__, C_LEVEL);
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/* interpret command line arguments */
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nfile = 0;
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dtl_fp = dvi_fp = NULL;
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dtl_filename = dvi_filename = "";
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for (i=1; i < argc; i++)
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{
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/* parse options, followed by any explicit filenames */
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parse (argv[i]);
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}
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if (nfile != 2) /* not exactly two files specified, so give help */
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give_help();
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else
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/* the real works */
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dt2dv (dtl_fp, dvi_fp);
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return 0; /* OK */
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}
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/* end main */
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Void
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mem_viol
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#ifdef STDC
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(int sig)
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#else
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(sig)
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int sig;
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#endif
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{
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Void (* handler) ARGS((int));
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handler = (Void (*) ARGS((int))) signal (SIGSEGV, mem_viol);
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if (sig != SIGSEGV)
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{
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PRINT_PROGNAME;
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fprintf (stderr,
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"(mem_viol) : called with wrong signal!\n");
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}
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PRINT_PROGNAME;
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fprintf (stderr, "(mem_viol) : RUNTIME MEMORY ERROR : memory violation, ");
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fprintf (stderr, "dtl line >= ");
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fprintf (stderr, WF, dtl_line.num);
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fprintf (stderr, "\n");
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dexit (1);
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}
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/* mem_viol */
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Void
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give_help (VOID)
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{
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int i;
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char * keyword;
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fprintf (stderr, "usage: ");
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PRINT_PROGNAME;
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fprintf (stderr, "[options] dtl_file dvi_file");
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fprintf (stderr, "\n");
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for (i=0; (keyword = opts[i].keyword) != NULL; i++)
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{
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fprintf (stderr, " ");
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fprintf (stderr, "[%s]", keyword);
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fprintf (stderr, " ");
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fprintf (stderr, "%s", opts[i].desc);
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fprintf (stderr, "\n");
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}
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fprintf (stderr, "Messages, like this one, go to stderr.\n");
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}
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/* give_help */
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Void no_op (VOID)
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/* do nothing */
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{
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}
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Void dtl_stdin (VOID)
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{
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extern FILE * dtl_fp;
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extern int nfile;
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dtl_fp = stdin;
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dtl_filename = "Standard Input";
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++ nfile;
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}
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Void dvi_stdout (VOID)
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{
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extern FILE * dvi_fp;
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extern int nfile;
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/* ! Perilous to monitors! */
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dvi_fp = stdout;
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dvi_filename = "Standard Output";
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++ nfile;
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}
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int
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parse
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#ifdef STDC
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(char * s)
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#else
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(s)
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char * s;
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#endif
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/* parse one command-line argument, `s' */
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{
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int i;
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char * keyword;
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for (i=0; (keyword = opts[i].keyword) != NULL; i++)
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{
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if (strncmp (s, keyword, strlen (keyword)) == 0)
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{
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Void (*pfn) (VOID);
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(*(opts[i].p_var)) = 1; /* turn option on */
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if ((pfn = opts[i].p_fn) != NULL)
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(*pfn) (); /* call option function */
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return i;
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}
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}
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/* reached here, so not an option: assume it's a filename */
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process (s);
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return i;
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}
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/* parse */
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int
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open_dtl
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#ifdef STDC
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(char * dtl_file, FILE ** pdtl)
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#else
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(dtl_file, pdtl)
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char * dtl_file;
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FILE ** pdtl;
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#endif
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/* I: dtl_file; I: pdtl; O: *pdtl. */
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{
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extern char * dtl_filename;
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dtl_filename = dtl_file;
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if (dtl_filename == NULL)
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{
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PRINT_PROGNAME;
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fprintf (stderr,
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"(open_dtl) : INTERNAL ERROR : dtl file's name is NULL.\n");
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dexit (1);
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}
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if (pdtl == NULL)
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{
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PRINT_PROGNAME;
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fprintf (stderr,
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"(open_dtl) : INTERNAL ERROR : address of dtl variable is NULL.\n");
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|
dexit (1);
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}
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*pdtl = fopen (dtl_file, "r");
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if (*pdtl == NULL)
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{
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PRINT_PROGNAME;
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|
fprintf (stderr,
|
|
"(open_dtl) : DTL FILE ERROR : Cannot open \"%s\" for text reading.\n",
|
|
dtl_file);
|
|
dexit (1);
|
|
}
|
|
|
|
return 1; /* OK */
|
|
}
|
|
/* open_dtl */
|
|
|
|
|
|
int
|
|
open_dvi
|
|
#ifdef STDC
|
|
(char * dvi_file, FILE ** pdvi)
|
|
#else
|
|
(dvi_file, pdvi)
|
|
char * dvi_file;
|
|
FILE ** pdvi;
|
|
#endif
|
|
/* I: dvi_file; I: pdvi; O: *pdvi. */
|
|
{
|
|
extern char * dvi_filename;
|
|
|
|
dvi_filename = dvi_file;
|
|
|
|
if (dvi_filename == NULL)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr,
|
|
"(open_dvi) : INTERNAL ERROR : dvi file's name is NULL.\n");
|
|
dexit (1);
|
|
}
|
|
|
|
if (pdvi == NULL)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr,
|
|
"(open_dvi) : INTERNAL ERROR : address of dvi variable is NULL.\n");
|
|
dexit (1);
|
|
}
|
|
|
|
*pdvi = fopen (dvi_file, "wb");
|
|
|
|
if (*pdvi == NULL)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr,
|
|
"(open_dvi) : DVI FILE ERROR : Cannot open \"%s\" for binary writing.\n",
|
|
dvi_file);
|
|
dexit (1);
|
|
}
|
|
|
|
return 1; /* OK */
|
|
}
|
|
/* open_dvi */
|
|
|
|
|
|
Void
|
|
process
|
|
#ifdef STDC
|
|
(char * s)
|
|
#else
|
|
(s)
|
|
char * s;
|
|
#endif
|
|
{
|
|
extern FILE * dtl_fp, * dvi_fp;
|
|
extern int nfile;
|
|
if (dtl_fp == NULL) /* first filename assumed to be DTL input */
|
|
{
|
|
open_dtl (s, &dtl_fp);
|
|
}
|
|
else if (dvi_fp == NULL) /* second filename assumed to be DVI output */
|
|
{
|
|
open_dvi (s, &dvi_fp);
|
|
}
|
|
else
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(process) : at most two filenames allowed.\n");
|
|
exit (1);
|
|
}
|
|
++ nfile;
|
|
}
|
|
/* process */
|
|
|
|
|
|
COUNT dtl_read = 0; /* bytes read from dtl file */
|
|
COUNT dvi_written = 0; /* bytes written to dvi file */
|
|
word_t last_bop_address = -1; /* byte address of last bop; first bop uses -1 */
|
|
word_t postamble_address = -1; /* byte address of postamble */
|
|
COUNT ncom = 0; /* commands successfully read and interpreted from dtl file */
|
|
COUNT com_read = 0; /* bytes read in current (command and arguments), */
|
|
/* since and including the opening BCOM_CHAR, if any */
|
|
|
|
|
|
int
|
|
put_byte
|
|
#ifdef STDC
|
|
(int byte, FILE * dvi)
|
|
#else
|
|
(byte, dvi)
|
|
int byte;
|
|
FILE * dvi;
|
|
#endif
|
|
/* write byte into dvi file */
|
|
{
|
|
check_byte (byte);
|
|
/* if (fprintf (dvi, "%c", byte) != 1) */
|
|
if (fprintf (dvi, "%c", byte) < 0)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr,
|
|
"(put_byte) : DVI FILE ERROR (%s) : cannot write to dvi file.\n",
|
|
dtl_filename);
|
|
dexit (1);
|
|
}
|
|
++ dvi_written;
|
|
return 1; /* OK */
|
|
}
|
|
/* put_byte */
|
|
|
|
|
|
int
|
|
dt2dv
|
|
#ifdef STDC
|
|
(FILE * dtl, FILE * dvi)
|
|
#else
|
|
(dtl, dvi)
|
|
FILE * dtl;
|
|
FILE * dvi;
|
|
#endif
|
|
{
|
|
int nprefixes = 0; /* number of prefixes in cmd_prefixes[] list. */
|
|
static Token dtl_cmd = ""; /* DTL command name */
|
|
COUNT nread = 0; /* number of bytes read by a function from dtl file. */
|
|
|
|
nprefixes = sizeof (cmd_prefixes) / sizeof (CmdPrefix);
|
|
|
|
/* Construct array of all NCMDS == 256 DTL commands */
|
|
|
|
(Void) cons_cmds (nprefixes, cmd_prefixes, cmd_table);
|
|
|
|
/* DTL commands have the form "[ ]*command arg ... arg[ ]*", */
|
|
/* possibly enclosed in a BCOM, ECOM pair, */
|
|
/* and are separated by optional whitespace, typically newlines. */
|
|
/* That is, each command and its arguments are parenthesised, */
|
|
/* with optional spaces after the BCOM and before the ECOM, if any. */
|
|
|
|
/* dt2dv is now at the very start of the DTL file */
|
|
|
|
dtl_line.num = 0;
|
|
dtl_read = 0;
|
|
|
|
/* The very first thing should be the "variety" signature */
|
|
|
|
nread = read_variety (dtl);
|
|
|
|
/* while not end of dtl file or reading error, */
|
|
/* read, interpret, and write commands */
|
|
|
|
while (!feof (dtl))
|
|
{
|
|
int opcode;
|
|
|
|
com_read = 0;
|
|
|
|
if (group)
|
|
{
|
|
/* BCOM check */
|
|
static Token token = ""; /* DTL token */
|
|
nread = read_token (dtl, token);
|
|
/* test for end of input, or reading error */
|
|
if (strlen (token) == 0)
|
|
{
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(dt2dv) : end of input, or reading error.\n");
|
|
}
|
|
break;
|
|
}
|
|
/* test whether this command begins correctly */
|
|
else if (strcmp (token, BCOM) != 0)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(dt2dv) : DTL FILE ERROR (%s) : ", dtl_filename);
|
|
fprintf (stderr, "command must begin with \"%s\", ", BCOM);
|
|
fprintf (stderr, "not `%c' (char %d).\n", token[0], token[0]);
|
|
dexit (1);
|
|
}
|
|
/* end BCOM check */
|
|
}
|
|
|
|
/* read the command name */
|
|
nread = read_token (dtl, dtl_cmd);
|
|
/* test for end of input, or reading error */
|
|
if (strlen (dtl_cmd) == 0)
|
|
{
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr,
|
|
"(dt2dv) : end of input, or reading error.\n");
|
|
}
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(dt2dv) : command ");
|
|
fprintf (stderr, WF, ncom);
|
|
fprintf (stderr, " = \"%s\".\n", dtl_cmd);
|
|
}
|
|
|
|
/* find opcode for this command */
|
|
if (find_command (dtl_cmd, &opcode) == 1)
|
|
{
|
|
/* write the opcode, if we can */
|
|
put_byte (opcode, dvi);
|
|
|
|
/* treat the arguments, if any */
|
|
xfer_args (dtl, dvi, opcode);
|
|
}
|
|
else if (dtl_cmd[0] == BSEQ_CHAR)
|
|
{
|
|
/* sequence of font characters for SETCHAR */
|
|
set_seq (dtl, dvi);
|
|
}
|
|
else
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr,
|
|
"(dt2dv) : DTL FILE ERROR (%s) : unknown command \"%s\".\n",
|
|
dtl_filename, dtl_cmd);
|
|
dexit (1);
|
|
}
|
|
}
|
|
|
|
if (group)
|
|
{
|
|
/* seek ECOM after command's last argument and optional whitespace */
|
|
static Token token = ""; /* DTL token */
|
|
nread = read_token (dtl, token);
|
|
/* test for end of input, or reading error */
|
|
if (strlen (token) == 0)
|
|
{
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr,
|
|
"(dt2dv) : end of input, or reading error.\n");
|
|
}
|
|
break;
|
|
}
|
|
if (strcmp (token, ECOM) != 0)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(dt2dv) : DTL FILE ERROR (%s) : ", dtl_filename);
|
|
fprintf (stderr, "ECOM (\"%s\") expected, not `%c' (char %d).\n",
|
|
ECOM, token[0], token[0]);
|
|
dexit (1);
|
|
}
|
|
/* end ECOM check */
|
|
}
|
|
|
|
++ ncom; /* one more command successfully read and interpreted */
|
|
}
|
|
/* end while */
|
|
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(dt2dv) :\n");
|
|
fprintf (stderr, "Read (from file \"%s\") ", dtl_filename);
|
|
fprintf (stderr, WF, dtl_read);
|
|
fprintf (stderr, " DTL bytes (");
|
|
fprintf (stderr, UF4, dtl_line.num);
|
|
fprintf (stderr, " lines);\n");
|
|
fprintf (stderr, "wrote (to file \"%s\") ", dvi_filename);
|
|
fprintf (stderr, WF, dvi_written);
|
|
fprintf (stderr, " DVI bytes;\n");
|
|
fprintf (stderr, "completely interpreted ");
|
|
fprintf (stderr, WF, ncom);
|
|
fprintf (stderr, " DVI command%s.\n", (ncom == 1 ? "" : "s"));
|
|
fprintf (stderr, "\n");
|
|
|
|
(Void) free_cmds (cmd_table);
|
|
|
|
return 1; /* OK */
|
|
}
|
|
/* dt2dv */
|
|
|
|
|
|
Void *
|
|
gmalloc
|
|
#ifdef STDC
|
|
(long int size)
|
|
#else
|
|
(size)
|
|
long int size;
|
|
#endif
|
|
{
|
|
Void * p = NULL;
|
|
if (size < 1)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(gmalloc) : INTERNAL ERROR : ");
|
|
fprintf (stderr,
|
|
"unreasonable request to malloc %ld bytes\n",
|
|
size);
|
|
dexit (1);
|
|
}
|
|
p = (Void *) malloc ((size_t) size);
|
|
if (p == NULL)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(gmalloc) : MEMORY ALLOCATION ERROR : ");
|
|
fprintf (stderr,
|
|
"operating system failed to malloc %ld bytes\n",
|
|
size);
|
|
dexit (1);
|
|
}
|
|
return (p);
|
|
}
|
|
/* gmalloc */
|
|
|
|
|
|
Void
|
|
dinfo (VOID)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(dinfo) : ");
|
|
fprintf (stderr, "Current DTL input line ");
|
|
fprintf (stderr, UF4, dtl_line.num);
|
|
fprintf (stderr, " :\n");
|
|
fprintf (stderr, "\"%s\"\n", dtl_line.buf);
|
|
fprintf (stderr, "Read ");
|
|
fprintf (stderr, WF, dtl_read);
|
|
fprintf (stderr, " DTL bytes (");
|
|
fprintf (stderr, WF, com_read);
|
|
fprintf (stderr, " in current command), wrote ");
|
|
fprintf (stderr, WF, dvi_written);
|
|
fprintf (stderr, " DVI bytes.\n");
|
|
fprintf (stderr, "Successfully interpreted ");
|
|
fprintf (stderr, WF, ncom);
|
|
fprintf (stderr, " DVI command%s.\n", (ncom == 1 ? "" : "s"));
|
|
}
|
|
/* dinfo */
|
|
|
|
|
|
Void
|
|
dexit
|
|
#ifdef STDC
|
|
(int n)
|
|
#else
|
|
(n)
|
|
int n;
|
|
#endif
|
|
{
|
|
dinfo();
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(dexit) : exiting with status %d.\n", n);
|
|
exit (n);
|
|
}
|
|
/* dexit */
|
|
|
|
|
|
int
|
|
cons_cmds
|
|
#ifdef STDC
|
|
(int nprefixes, CmdPrefix * prefix, CmdTable cmds)
|
|
#else
|
|
(nprefixes, prefix, cmds)
|
|
int nprefixes;
|
|
CmdPrefix * prefix;
|
|
CmdTable cmds;
|
|
#endif
|
|
{
|
|
int code; /* first opcode for a given command prefix */
|
|
int opcode; /* command's opcode */
|
|
int nsuffixes; /* number of commands with a given prefix */
|
|
int isuffix; /**** integer suffix, of at most three digits ****/
|
|
String suffix; /* suffix string generated from integer suffix */
|
|
size_t plen = 0; /* prefix length */
|
|
size_t slen; /* suffix length */
|
|
size_t clen; /* whole command name length */
|
|
int i, j; /* loop indices */
|
|
|
|
for (i=0; i < nprefixes; prefix++, i++)
|
|
{
|
|
code = prefix->first_code;
|
|
if (code < 0 || code > 255)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(cons_cmds) : INTERNAL ERROR : ");
|
|
fprintf (stderr,
|
|
"prefix listed internally with code = %d, must be 0 to 255\n",
|
|
code);
|
|
dexit (1);
|
|
}
|
|
if (prefix->has_suffix)
|
|
{
|
|
plen = strlen (prefix->name);
|
|
/**** Suffixes in DTL are Integers, in Sequence */
|
|
if (prefix->last_suffix < prefix->first_suffix)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(cons_cmds) : INTERNAL ERROR : ");
|
|
fprintf (stderr,
|
|
"prefix's last suffix %d < first suffix (%d)\n",
|
|
prefix->last_suffix, prefix->first_suffix);
|
|
dexit (1);
|
|
}
|
|
nsuffixes = prefix->last_suffix - prefix->first_suffix + 1;
|
|
opcode = prefix->first_code;
|
|
for (j=0; j < nsuffixes; j++, opcode++)
|
|
{
|
|
isuffix = prefix->first_suffix + j;
|
|
if (0 <= code && code <= 127) /* SETCHAR */
|
|
{
|
|
/* SETCHAR's suffix is written in uppercase hexadecimal */
|
|
sprintf (suffix, "%02X", isuffix);
|
|
}
|
|
else /* 128 <= code && code <= 255 */ /* other DTL commands */
|
|
{
|
|
/* other commands' suffices are written in decimal */
|
|
sprintf (suffix, "%d", isuffix);
|
|
}
|
|
slen = strlen (suffix);
|
|
clen = plen + slen;
|
|
cmds[opcode] = (char *) gmalloc (clen+1);
|
|
strcpy (cmds[opcode], prefix->name);
|
|
strcat (cmds[opcode], suffix);
|
|
}
|
|
}
|
|
else /* command name = prefix */
|
|
{
|
|
plen = strlen (prefix->name);
|
|
clen = plen;
|
|
opcode = prefix->first_code;
|
|
cmds[opcode] = (char *) gmalloc (clen+1);
|
|
strcpy (cmds[opcode], prefix->name);
|
|
}
|
|
}
|
|
|
|
return 1; /* OK */
|
|
}
|
|
/* cons_cmds */
|
|
|
|
|
|
Void
|
|
free_cmds
|
|
#ifdef STDC
|
|
(CmdTable cmd_table)
|
|
#else
|
|
(cmd_table)
|
|
CmdTable cmd_table;
|
|
#endif
|
|
{
|
|
int i;
|
|
for (i=0; i < NCMDS; i++)
|
|
gfree (cmd_table[i]);
|
|
}
|
|
/* free_cmds */
|
|
|
|
|
|
int
|
|
get_line
|
|
#ifdef STDC
|
|
(FILE * fp, Line * line, int max)
|
|
#else
|
|
(fp, line, max)
|
|
FILE * fp;
|
|
Line * line;
|
|
int max;
|
|
#endif
|
|
/* read a (Line *) line from fp, return length */
|
|
/* adapted from K&R (second, alias ANSI C, edition, 1988), page 165 */
|
|
{
|
|
if (fgets (line->buf, max, fp) == NULL)
|
|
return 0;
|
|
else
|
|
{
|
|
++ line->num;
|
|
line->wrote = strlen (line->buf);
|
|
line->read = 0;
|
|
return 1;
|
|
}
|
|
}
|
|
/* get_line */
|
|
|
|
|
|
int
|
|
read_line_char
|
|
#ifdef STDC
|
|
(FILE * fp, int * ch)
|
|
#else
|
|
(fp, ch)
|
|
FILE * fp;
|
|
int * ch;
|
|
#endif
|
|
/* read one character from dtl_line if possible, */
|
|
/* otherwise read another dtl_line from fp */
|
|
/* return 1 if a character is read, 0 if at end of fp file */
|
|
{
|
|
extern Line dtl_line;
|
|
if (dtl_line.wrote == 0 || dtl_line.read >= dtl_line.wrote)
|
|
{
|
|
int line_status;
|
|
/* refill line buffer */
|
|
line_status = get_line (fp, &dtl_line, MAXLINE);
|
|
if (line_status == 0)
|
|
{
|
|
/* at end of DTL file */
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(read_line_char) : end of DTL file\n");
|
|
dinfo();
|
|
}
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
/* new DTL line was read */
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(read_line_char) : new DTL input line:\n");
|
|
fprintf (stderr, "\"%s\"\n", dtl_line.buf);
|
|
}
|
|
}
|
|
}
|
|
*ch = dtl_line.buf [dtl_line.read ++];
|
|
++ dtl_read;
|
|
++ com_read; /* count another DTL command character */
|
|
return 1;
|
|
}
|
|
/* read_line_char */
|
|
|
|
|
|
int
|
|
read_char
|
|
#ifdef STDC
|
|
(FILE * fp, int * ch)
|
|
#else
|
|
(fp, ch)
|
|
FILE * fp;
|
|
int * ch;
|
|
#endif
|
|
/* Read next character, if any, from file fp. */
|
|
/* Write it into *ch. */
|
|
/* If no character is read, then *ch value < 0. */
|
|
/* Return 1 if OK, 0 if EOF or error. */
|
|
{
|
|
int status = 1;
|
|
int c; /* in case ch points awry, we still have something in c. */
|
|
|
|
c = EOF;
|
|
if (read_line_char (fp, &c) == 0)
|
|
{
|
|
/* end of fp file, or error reading it */
|
|
status = 0;
|
|
}
|
|
else
|
|
{
|
|
if (c > 255)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr,
|
|
"(read_char) : character %d not in range 0 to 255\n",
|
|
c);
|
|
dinfo();
|
|
status = 0;
|
|
}
|
|
else if ( ! isprint (c & 0x7f) && ! isspace (c))
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr,
|
|
"(read_char) : character %d %s.\n",
|
|
c,
|
|
"not printable and not white space");
|
|
dinfo();
|
|
status = 0;
|
|
}
|
|
}
|
|
*ch = c;
|
|
|
|
return status;
|
|
}
|
|
/* read_char */
|
|
|
|
|
|
COUNT
|
|
read_variety
|
|
#ifdef STDC
|
|
(FILE * dtl)
|
|
#else
|
|
(dtl)
|
|
FILE * dtl;
|
|
#endif
|
|
/* read and check DTL variety signature */
|
|
/* return number of DTL bytes written */
|
|
/* DTL variety is _NEVER_ grouped by BCOM and ECOM. */
|
|
/* Uniformity here enables the program easily to modify its behavior. */
|
|
{
|
|
COUNT vread = 0; /* number of DTL bytes read by read_variety */
|
|
COUNT nread = 0; /* number of DTL bytes read by read_token */
|
|
static Token token = "";
|
|
|
|
/* read the DTL VARIETY keyword */
|
|
nread = read_token (dtl, token);
|
|
vread += nread;
|
|
/* test whether signature begins correctly */
|
|
if (strcmp (token, "variety") != 0)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(read_variety) : DTL FILE ERROR (%s) : ", dtl_filename);
|
|
fprintf (stderr, "DTL signature must begin with \"%s\", not \"%s\".\n",
|
|
"variety", token);
|
|
dexit (1);
|
|
}
|
|
|
|
/* read the DTL variety */
|
|
nread = read_token (dtl, token);
|
|
vread += nread;
|
|
/* test whether variety is correct */
|
|
if (strcmp (token, VARIETY) != 0)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(read_variety) : DTL FILE ERROR (%s) : ", dtl_filename);
|
|
fprintf (stderr, "DTL variety must be \"%s\", not \"%s\".\n",
|
|
VARIETY, token);
|
|
dexit (1);
|
|
}
|
|
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(read_variety) : DTL variety %s is OK.\n", VARIETY);
|
|
|
|
return vread; /* OK */
|
|
}
|
|
/* read_variety */
|
|
|
|
|
|
COUNT
|
|
skip_space
|
|
#ifdef STDC
|
|
(FILE * fp, int * ch)
|
|
#else
|
|
(fp, ch)
|
|
FILE * fp;
|
|
int * ch;
|
|
#endif
|
|
/* Skip whitespace characters in file fp. */
|
|
/* Write in *ch the last character read from fp, */
|
|
/* or < 0 if fp could not be read. */
|
|
/* Return number of characters read from fp. */
|
|
{
|
|
int c; /* character read (if any) */
|
|
COUNT count; /* number (0 or more) of whitespace characters read */
|
|
int nchar; /* number (0 or 1) of characters read by read_char */
|
|
|
|
/* loop ends at: end of fp file, or reading error, or not a white space */
|
|
for (count=0; ((nchar = read_char (fp, &c)) == 1 && isspace (c)); ++count)
|
|
{
|
|
/* otherwise, more white spaces to skip */
|
|
if (debug)
|
|
{
|
|
/* report when each DTL end of line is reached */
|
|
if (c == '\n')
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(skip_space) : ");
|
|
fprintf (stderr, "end of DTL line (at least) ");
|
|
fprintf (stderr, WF, dtl_line.num);
|
|
fprintf (stderr, "\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
if (nchar == 0)
|
|
{
|
|
c = -1;
|
|
}
|
|
|
|
*ch = c; /* c will be < 0 if read_char could not read fp */
|
|
return (count + nchar);
|
|
}
|
|
/* skip_space */
|
|
|
|
|
|
COUNT
|
|
read_token
|
|
#ifdef STDC
|
|
(FILE * dtl, char * token)
|
|
#else
|
|
(dtl, token)
|
|
FILE * dtl;
|
|
char * token;
|
|
#endif
|
|
/* read next token from dtl file. */
|
|
/* return number of DTL bytes read. */
|
|
/* A token is one of:
|
|
a string from BMES_CHAR to the next unescaped EMES_CHAR, inclusive;
|
|
BCOM or ECOM, unless these are empty strings;
|
|
BSEQ or ESEQ;
|
|
any other sequence of non-whitespace characters.
|
|
*/
|
|
{
|
|
COUNT nread; /* number of DTL bytes read by read_token */
|
|
int ch; /* most recent character read */
|
|
|
|
nread = 0;
|
|
|
|
/* obtain first non-space character */
|
|
/* add to nread the number of characters read from dtl by skip_space */
|
|
nread += skip_space (dtl, &ch);
|
|
|
|
if (ch < 0)
|
|
{
|
|
/* end of dtl file */
|
|
/* write an empty token */
|
|
strcpy (token, "");
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(read_token) : end of dtl file.\n");
|
|
}
|
|
}
|
|
else if (group && ch == BCOM_CHAR)
|
|
{
|
|
strcpy (token, BCOM);
|
|
}
|
|
else if (group && ch == ECOM_CHAR)
|
|
{
|
|
strcpy (token, ECOM);
|
|
}
|
|
else
|
|
{
|
|
token[0] = ch;
|
|
token[1] = '\0';
|
|
if (ch == BMES_CHAR) /* string token; read until unescaped EMES_CHAR */
|
|
{
|
|
nread += read_mes (dtl, token+1);
|
|
}
|
|
else if (ch == BSEQ_CHAR || ch == ESEQ_CHAR)
|
|
{
|
|
/* token is complete */
|
|
}
|
|
else /* any other string not containing (ECOM_CHAR or) whitespace */
|
|
{
|
|
nread += read_misc (dtl, token+1);
|
|
}
|
|
}
|
|
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(read_token) : token = \"%s\"\n", token);
|
|
}
|
|
|
|
return (nread); /* number of bytes read from dtl file */
|
|
}
|
|
/* read_token */
|
|
|
|
|
|
#define CHAR_OK 1
|
|
#define CHAR_FAIL 0
|
|
#define CHAR_EOS (-1)
|
|
|
|
int
|
|
read_string_char
|
|
#ifdef STDC
|
|
(FILE * fp, int * ch)
|
|
#else
|
|
(fp, ch)
|
|
FILE * fp;
|
|
int * ch;
|
|
#endif
|
|
{
|
|
int status = CHAR_OK; /* OK so far */
|
|
int c;
|
|
|
|
if (read_char (fp, &c) == 0)
|
|
status = CHAR_FAIL; /* fail */
|
|
|
|
if (c == EMES_CHAR) /* end-of-string char */
|
|
{
|
|
status = CHAR_EOS; /* end of string */
|
|
}
|
|
else if (c == ESC_CHAR) /* escape character */
|
|
{
|
|
/* accept the next character literally, even ESC_CHAR and EMES_CHAR */
|
|
if (read_char (fp, &c) == 0)
|
|
status = CHAR_FAIL; /* fail */
|
|
}
|
|
|
|
*ch = c;
|
|
return status;
|
|
}
|
|
/* read_string_char */
|
|
|
|
|
|
COUNT
|
|
read_misc
|
|
#ifdef STDC
|
|
(FILE * fp, Token token)
|
|
#else
|
|
(fp, token)
|
|
FILE * fp;
|
|
Token token;
|
|
#endif
|
|
{
|
|
int c;
|
|
int count;
|
|
/* loop ends at: end of fp file, or reading error, or a space */
|
|
for (count=0; count <= MAXTOKLEN; ++count)
|
|
{
|
|
if (read_char (fp, &c) == 0 || isspace (c))
|
|
break;
|
|
if (group && c == ECOM_CHAR)
|
|
{
|
|
(Void) unread_char ();
|
|
break;
|
|
}
|
|
|
|
token[count] = c;
|
|
}
|
|
token[count] = '\0';
|
|
return count;
|
|
}
|
|
/* read_misc */
|
|
|
|
|
|
COUNT
|
|
read_mes
|
|
#ifdef STDC
|
|
(FILE * fp, char * token)
|
|
#else
|
|
(fp, token)
|
|
FILE * fp;
|
|
char * token;
|
|
#endif
|
|
/* called **AFTER** a BMES_CHAR has been read */
|
|
/* read file fp for characters up to next unescaped EMES_CHAR */
|
|
/* this is called a "string token" */
|
|
/* write string, including EMES_CHAR, into token[] */
|
|
/* return number of characters read from fp */
|
|
{
|
|
COUNT dtl_count; /* number of DTL characters read by read_mes from fp */
|
|
int more; /* flag more == 0 to terminate loop */
|
|
int escape; /* flag escape == 1 if previous character was ESC_CHAR */
|
|
int ch; /* current DTL character */
|
|
|
|
escape = 0;
|
|
more = 1;
|
|
dtl_count = 0;
|
|
while (more)
|
|
{
|
|
if (read_char (fp, &ch) == 0)
|
|
{
|
|
/* end of fp file, or reading error */
|
|
more = 0;
|
|
}
|
|
else /* error checking passed */
|
|
{
|
|
++ dtl_count;
|
|
if (ch == EMES_CHAR && escape == 0) /* end of string */
|
|
{
|
|
/* include final EMES_CHAR */
|
|
* token ++ = ch;
|
|
more = 0;
|
|
}
|
|
else if (ch == ESC_CHAR && escape == 0)
|
|
{
|
|
/* next character is not end of string */
|
|
escape = 1;
|
|
}
|
|
else
|
|
{
|
|
/* store any other character, */
|
|
/* including escaped EMES_CHAR and ESC_CHAR*/
|
|
* token ++ = ch;
|
|
escape = 0;
|
|
}
|
|
}
|
|
}
|
|
* token = '\0';
|
|
return dtl_count;
|
|
}
|
|
/* read_mes */
|
|
|
|
|
|
int
|
|
unread_char (VOID)
|
|
/* wind input back, to allow rereading of one character */
|
|
/* return 1 if this works, 0 on error */
|
|
{
|
|
extern Line dtl_line;
|
|
int status;
|
|
if (dtl_line.read > 0)
|
|
{
|
|
-- dtl_line.read; /* back up one character in dtl_line */
|
|
-- dtl_read; /* correct the count of DTL characters */
|
|
-- com_read; /* count another DTL command character */
|
|
status = 1; /* OK */
|
|
}
|
|
else /* current DTL line is empty */
|
|
{
|
|
status = 0; /* error */
|
|
}
|
|
return status;
|
|
}
|
|
/* unread_char */
|
|
|
|
|
|
int
|
|
find_command
|
|
#ifdef STDC
|
|
(char * command, int * opcode)
|
|
#else
|
|
(command, opcode)
|
|
char * command;
|
|
int * opcode;
|
|
#endif
|
|
{
|
|
int found;
|
|
int i;
|
|
|
|
found = 0;
|
|
for (i=0; i < NCMDS; i++)
|
|
{
|
|
if ((cmd_table[i] != 0) && (strcmp (command, cmd_table[i]) == 0))
|
|
{
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
*opcode = i;
|
|
|
|
return found;
|
|
}
|
|
/* find_command */
|
|
|
|
|
|
int
|
|
check_byte
|
|
#ifdef STDC
|
|
(int byte)
|
|
#else
|
|
(byte)
|
|
int byte;
|
|
#endif
|
|
{
|
|
if (byte < 0 || byte > 255)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(check_byte) : INTERNAL ERROR : ");
|
|
fprintf (stderr, "byte %d not in the range of 0 to 255.\n", byte);
|
|
dexit (1);
|
|
}
|
|
return 1; /* OK */
|
|
}
|
|
/* check_byte */
|
|
|
|
|
|
int
|
|
xfer_args
|
|
#ifdef STDC
|
|
(FILE * dtl, FILE * dvi, int opcode)
|
|
#else
|
|
(dtl, dvi, opcode)
|
|
FILE * dtl;
|
|
FILE * dvi;
|
|
int opcode;
|
|
#endif
|
|
{
|
|
int n;
|
|
|
|
if (opcode >= 0 && opcode <= 127)
|
|
; /* SETCHAR uses no data */
|
|
else if (opcode >= 128 && opcode <= 170)
|
|
{
|
|
word_t this_bop_address = last_bop_address;
|
|
|
|
if (opcode == 139) /* BOP */
|
|
{
|
|
this_bop_address = dvi_written - 1;
|
|
}
|
|
put_table (op_128_170, opcode, dtl, dvi);
|
|
if (opcode == 139) /* BOP */
|
|
{
|
|
xfer_bop_address (dtl, dvi);
|
|
last_bop_address = this_bop_address;
|
|
}
|
|
}
|
|
else if (opcode >= 171 && opcode <= 234)
|
|
; /* FONTNUM uses no data */
|
|
else if (opcode >= 235 && opcode <= 238)
|
|
put_table (fnt, opcode, dtl, dvi);
|
|
else if (opcode >= 239 && opcode <= 242)
|
|
{
|
|
n = opcode - 238;
|
|
special (dtl, dvi, n);
|
|
}
|
|
else if (opcode >= 243 && opcode <= 246)
|
|
{
|
|
n = opcode - 242;
|
|
fontdef (dtl, dvi, n);
|
|
}
|
|
else if (opcode == 247)
|
|
preamble (dtl, dvi);
|
|
else if (opcode == 248)
|
|
postamble (dtl, dvi);
|
|
else if (opcode == 249)
|
|
post_post (dtl, dvi);
|
|
else if (opcode >= 250 && opcode <= 255)
|
|
; /* these, undefined, opcodes use no data */
|
|
else
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr,
|
|
"(xfer_args) : opcode %d not handled.\n",
|
|
opcode);
|
|
}
|
|
|
|
return 1; /* OK */
|
|
}
|
|
/* xfer_args */
|
|
|
|
|
|
int
|
|
set_seq
|
|
#ifdef STDC
|
|
(FILE * dtl, FILE * dvi)
|
|
#else
|
|
(dtl, dvi)
|
|
FILE * dtl;
|
|
FILE * dvi;
|
|
#endif
|
|
/* Called _after_ a BSEQ_CHAR command */
|
|
/* Read bytes from dtl file, */
|
|
/* writing corresponding SETCHAR or SET1 commands to DVI file, */
|
|
/* _until_ unescaped ESEQ_CHAR is found */
|
|
/* Return 1 if OK, 0 on error */
|
|
/**** dt2dv assumes 8 bit characters, ****/
|
|
/**** but some day one might change that. ****/
|
|
{
|
|
int status = 1; /* status = 1 if OK, 0 if error */
|
|
int more; /* sequence of font characters continuing? */
|
|
int escape = 0; /* flag set if previous character was an escape */
|
|
int ch; /* character read from DTL file */
|
|
more = 1;
|
|
while (more)
|
|
{
|
|
/* ignore read_char status, to allow unprintable characters */
|
|
(Void) read_char (dtl, &ch);
|
|
/* but check for end of dtl file, or serious file reading error */
|
|
if (ch < 0)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(set_seq) : ");
|
|
fprintf (stderr, "end of dtl file, ");
|
|
fprintf (stderr, "or serious dtl file reading error\n");
|
|
dinfo();
|
|
more = 0;
|
|
status = 0; /* bad news */
|
|
}
|
|
else /* read dtl file, okay */
|
|
{
|
|
if (ch == ESC_CHAR && escape == 0) /* escape next character */
|
|
{
|
|
escape = 1;
|
|
}
|
|
else
|
|
{
|
|
if (ch == ESEQ_CHAR && escape == 0) /* end of sequence */
|
|
{
|
|
more = 0;
|
|
}
|
|
else if (ch <= 127) /* can use SETCHAR */
|
|
{
|
|
put_byte (ch, dvi);
|
|
}
|
|
else if (ch <= 255) /* can use SET1 */
|
|
{
|
|
put_byte (128, dvi); /* SET1 opcode */
|
|
put_unsigned (1, (U4) ch, dvi);
|
|
}
|
|
else
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(set_seq) : ");
|
|
fprintf (stderr,
|
|
"ERROR : DTL character %d is not in range 0 to 255\n",
|
|
ch);
|
|
dexit (1);
|
|
more = 0;
|
|
status = 0; /* Error, because dt2dv assumes 8 bit characters */
|
|
}
|
|
escape = 0; /* current ch is not an escape character */
|
|
}
|
|
}
|
|
}
|
|
return status;
|
|
}
|
|
/* set_seq */
|
|
|
|
|
|
U4
|
|
xfer_hex
|
|
#ifdef STDC
|
|
(int n, FILE * dtl, FILE * dvi)
|
|
#else
|
|
(n, dtl, dvi)
|
|
int n;
|
|
FILE * dtl;
|
|
FILE * dvi;
|
|
#endif
|
|
/* translate unsigned n-byte hexadecimal number from dtl to dvi file. */
|
|
/* return value of hexadecimal number */
|
|
{
|
|
U4 unum = 0; /* at most this space needed */
|
|
COUNT nread = 0; /* number of DTL bytes read by read_token */
|
|
int nconv = 0; /* number of arguments converted by sscanf */
|
|
static Token token = ""; /* DTL token */
|
|
|
|
if (n < 1 || n > 4)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr,
|
|
"(xfer_hex) : INTERNAL ERROR : asked for %d bytes. Must be 1 to 4.\n",
|
|
n);
|
|
dexit (1);
|
|
}
|
|
|
|
nread = read_token (dtl, token);
|
|
|
|
nconv = sscanf (token, XF4, &unum);
|
|
|
|
if (nconv < 1)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(xfer_hex) : DTL FILE ERROR (%s) : %s \"%s\".\n",
|
|
dtl_filename, "hexadecimal number expected, not", token);
|
|
dexit (1);
|
|
}
|
|
|
|
put_unsigned (n, unum, dvi);
|
|
|
|
return unum;
|
|
}
|
|
/* xfer_hex */
|
|
|
|
|
|
U4
|
|
xfer_oct
|
|
#ifdef STDC
|
|
(int n, FILE * dtl, FILE * dvi)
|
|
#else
|
|
(n, dtl, dvi)
|
|
int n;
|
|
FILE * dtl;
|
|
FILE * dvi;
|
|
#endif
|
|
/* translate unsigned n-byte octal number from dtl to dvi file. */
|
|
/* return value of octal number */
|
|
{
|
|
U4 unum = 0; /* at most this space needed */
|
|
COUNT nread = 0; /* number of DTL bytes read by read_token */
|
|
int nconv = 0; /* number of arguments converted by sscanf */
|
|
static Token token = ""; /* DTL token */
|
|
|
|
if (n < 1 || n > 4)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr,
|
|
"(xfer_oct) : INTERNAL ERROR : asked for %d bytes. Must be 1 to 4.\n",
|
|
n);
|
|
dexit (1);
|
|
}
|
|
|
|
nread = read_token (dtl, token);
|
|
|
|
nconv = sscanf (token, OF4, &unum);
|
|
|
|
if (nconv < 1)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(xfer_oct) : DTL FILE ERROR (%s) : %s \"%s\".\n",
|
|
dtl_filename, "octal number expected, not", token);
|
|
dexit (1);
|
|
}
|
|
|
|
put_unsigned (n, unum, dvi);
|
|
|
|
return unum;
|
|
}
|
|
/* xfer_oct */
|
|
|
|
|
|
U4
|
|
xfer_unsigned
|
|
#ifdef STDC
|
|
(int n, FILE * dtl, FILE * dvi)
|
|
#else
|
|
(n, dtl, dvi)
|
|
int n;
|
|
FILE * dtl;
|
|
FILE * dvi;
|
|
#endif
|
|
/* translate unsigned n-byte number from dtl to dvi file. */
|
|
/* return value of unsigned number */
|
|
{
|
|
U4 unum = 0; /* at most this space needed */
|
|
|
|
unum = get_unsigned (dtl);
|
|
put_unsigned (n, unum, dvi);
|
|
|
|
return unum;
|
|
}
|
|
/* xfer_unsigned */
|
|
|
|
|
|
S4
|
|
xfer_signed
|
|
#ifdef STDC
|
|
(int n, FILE * dtl, FILE * dvi)
|
|
#else
|
|
(n, dtl, dvi)
|
|
int n;
|
|
FILE * dtl;
|
|
FILE * dvi;
|
|
#endif
|
|
/* translate signed n-byte number from dtl to dvi file. */
|
|
/* return value of signed number */
|
|
{
|
|
S4 snum = 0;
|
|
|
|
snum = get_signed (dtl);
|
|
put_signed (n, snum, dvi);
|
|
|
|
return snum;
|
|
}
|
|
/* xfer_signed */
|
|
|
|
|
|
U4
|
|
get_unsigned
|
|
#ifdef STDC
|
|
(FILE * dtl)
|
|
#else
|
|
(dtl)
|
|
FILE * dtl;
|
|
#endif
|
|
/* read unsigned number from dtl file. */
|
|
/* return value of unsigned number */
|
|
{
|
|
U4 unum = 0; /* at most this space needed */
|
|
COUNT nread = 0; /* number of DTL bytes read by read_token */
|
|
int nconv = 0; /* number of arguments converted by sscanf */
|
|
static Token token = ""; /* DTL token */
|
|
|
|
nread = read_token (dtl, token);
|
|
|
|
nconv = sscanf (token, UF4, &unum);
|
|
|
|
if (nconv < 1)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(get_unsigned) : DTL FILE ERROR (%s) : %s \"%s\".\n",
|
|
dtl_filename, "unsigned number expected, not", token);
|
|
dexit (1);
|
|
}
|
|
|
|
return unum;
|
|
}
|
|
/* get_unsigned */
|
|
|
|
|
|
S4
|
|
get_signed
|
|
#ifdef STDC
|
|
(FILE * dtl)
|
|
#else
|
|
(dtl)
|
|
FILE * dtl;
|
|
#endif
|
|
/* read signed number from dtl file. */
|
|
/* return value of signed number */
|
|
{
|
|
S4 snum = 0;
|
|
COUNT nread = 0; /* number of DTL bytes read by read_token */
|
|
int nconv = 0; /* number of sscanf arguments converted and assigned */
|
|
static Token token = "";
|
|
|
|
nread = read_token (dtl, token);
|
|
|
|
nconv = sscanf (token, SF4, &snum);
|
|
|
|
if (nconv < 1)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(get_signed) : DTL FILE ERROR (%s) : %s \"%s\".\n",
|
|
dtl_filename, "signed number expected, not", token);
|
|
dexit (1);
|
|
}
|
|
|
|
return snum;
|
|
}
|
|
/* get_signed */
|
|
|
|
|
|
int
|
|
put_unsigned
|
|
#ifdef STDC
|
|
(int n, U4 unum, FILE * dvi)
|
|
#else
|
|
(n, unum, dvi)
|
|
int n;
|
|
U4 unum;
|
|
FILE * dvi;
|
|
#endif
|
|
/* put unsigned in-byte integer to dvi file */
|
|
/* DVI format uses Big-endian storage of numbers: */
|
|
/* most significant byte is first. */
|
|
/* return number of bytes written. */
|
|
{
|
|
Byte ubyte[4]; /* at most 4 bytes needed in DVI format */
|
|
int i;
|
|
|
|
if (n < 1 || n > 4)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr,
|
|
"(put_unsigned) : INTERNAL ERROR : asked for %d bytes. Must be 1 to 4.\n",
|
|
n);
|
|
dexit (1);
|
|
}
|
|
|
|
/* Big-endian storage. */
|
|
for (i = 0; i < n; i++)
|
|
{
|
|
ubyte[i] = (Byte) (unum % 256);
|
|
unum /= 256;
|
|
}
|
|
/* Reverse order for big-endian representation. */
|
|
for (i = n-1; i >= 0; i--)
|
|
{
|
|
put_byte ((int) ubyte[i], dvi);
|
|
}
|
|
|
|
return n;
|
|
}
|
|
/* put_unsigned */
|
|
|
|
|
|
int
|
|
put_signed
|
|
#ifdef STDC
|
|
(int n, S4 snum, FILE * dvi)
|
|
#else
|
|
(n, snum, dvi)
|
|
int n;
|
|
S4 snum;
|
|
FILE * dvi;
|
|
#endif
|
|
/* put signed in-byte integer to dvi file */
|
|
/* DVI format uses 2's complement Big-endian storage of signed numbers: */
|
|
/* most significant byte is first. */
|
|
/* return number of bytes written. */
|
|
{
|
|
/* Will this deal properly with the sign? */
|
|
|
|
if (n < 1 || n > 4)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr,
|
|
"(put_signed) : INTERNAL ERROR : asked for %d bytes. Must be 1 to 4.\n",
|
|
n);
|
|
dexit (1);
|
|
}
|
|
|
|
/* How do we ensure 2's complement representation? */
|
|
/* Here's a trick that I hope is portable, given ANSI C. */
|
|
/* See K&R (2nd edition), Appendix A6.2 "Integral Conversions". */
|
|
|
|
/* Convert snum to U4 data type */
|
|
put_unsigned (n, (U4) snum, dvi);
|
|
|
|
return n;
|
|
}
|
|
/* put_signed */
|
|
|
|
|
|
int
|
|
check_bmes
|
|
#ifdef STDC
|
|
(FILE * dtl)
|
|
#else
|
|
(dtl)
|
|
FILE * dtl;
|
|
#endif
|
|
/* check that a BMES_CHAR is the next non-whitespace character in dtl */
|
|
{
|
|
int ch; /* next non-whitespace character in dtl */
|
|
|
|
/* `(Void)' because we ignore the number of spaces skipped */
|
|
(Void) skip_space (dtl, &ch);
|
|
|
|
if (ch < 0)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(check_bmes) : DTL FILE ERROR (%s) : ",
|
|
dtl_filename);
|
|
fprintf (stderr, "end of dtl file, or reading error\n");
|
|
dexit (1);
|
|
}
|
|
|
|
if (ch != BMES_CHAR)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(check_bmes) : DTL FILE ERROR (%s) : ",
|
|
dtl_filename);
|
|
fprintf (stderr, "BMES_CHAR (`%c') %s, not `%c' (char %d).\n",
|
|
BMES_CHAR, "expected before string", ch, ch);
|
|
dexit (1);
|
|
}
|
|
|
|
return 1; /* OK */
|
|
}
|
|
/* check_bmes */
|
|
|
|
|
|
int
|
|
check_emes
|
|
#ifdef STDC
|
|
(FILE * dtl)
|
|
#else
|
|
(dtl)
|
|
FILE * dtl;
|
|
#endif
|
|
/* check that an EMES_CHAR is the next character in dtl */
|
|
{
|
|
int ch; /* dtl character */
|
|
|
|
if (read_char (dtl, &ch) == 0)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(check_emes) : DTL FILE ERROR (%s) : ",
|
|
dtl_filename);
|
|
fprintf (stderr, "end of dtl file, or reading error\n");
|
|
dexit (1);
|
|
}
|
|
|
|
if (ch != EMES_CHAR)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(check_emes) : DTL FILE ERROR (%s) : ",
|
|
dtl_filename);
|
|
fprintf (stderr, "EMES_CHAR (`%c') %s, not `%c' (char %d).\n",
|
|
EMES_CHAR, "expected to follow string", ch, ch);
|
|
dexit (1);
|
|
}
|
|
|
|
return 1; /* OK */
|
|
}
|
|
/* check_emes */
|
|
|
|
|
|
/* Size typically used in this program for Lstring variables */
|
|
#define LSIZE 1024
|
|
|
|
|
|
Void
|
|
init_Lstring
|
|
#ifdef STDC
|
|
(Lstring * lsp, long int n)
|
|
#else
|
|
(lsp, n)
|
|
Lstring * lsp;
|
|
long int n;
|
|
#endif
|
|
{
|
|
lsp->l = 0;
|
|
lsp->m = n;
|
|
lsp->s = (char *) gmalloc (n);
|
|
}
|
|
/* init_Lstring */
|
|
|
|
|
|
Void
|
|
de_init_Lstring
|
|
#ifdef STDC
|
|
(Lstring * lsp)
|
|
#else
|
|
(lsp)
|
|
Lstring * lsp;
|
|
#endif
|
|
{
|
|
lsp->l = 0;
|
|
lsp->m = 0;
|
|
free (lsp->s);
|
|
lsp->s = NULL; /* to be sure */
|
|
}
|
|
/* de_init_Lstring */
|
|
|
|
|
|
Lstring *
|
|
alloc_Lstring
|
|
#ifdef STDC
|
|
(long int n)
|
|
#else
|
|
(n)
|
|
long int n;
|
|
#endif
|
|
{
|
|
Lstring * lsp;
|
|
lsp = (Lstring *) gmalloc (sizeof (Lstring));
|
|
init_Lstring (lsp, n);
|
|
return (lsp);
|
|
}
|
|
/* alloc_Lstring */
|
|
|
|
|
|
Void
|
|
free_Lstring
|
|
#ifdef STDC
|
|
(Lstring * lstr)
|
|
#else
|
|
(lstr)
|
|
Lstring * lstr;
|
|
#endif
|
|
{
|
|
free (lstr->s);
|
|
free (lstr);
|
|
}
|
|
/* free_Lstring */
|
|
|
|
|
|
Void
|
|
ls_putb
|
|
#ifdef STDC
|
|
(int ch, Lstring * lstr)
|
|
#else
|
|
(ch, lstr)
|
|
int ch;
|
|
Lstring * lstr;
|
|
#endif
|
|
/* write byte ch into Lstring *lstr */
|
|
{
|
|
if (lstr->l >= lstr->m)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(ls_putb) : ERROR : No more room in Lstring.\n");
|
|
dexit (1);
|
|
}
|
|
else
|
|
{
|
|
lstr->s [(lstr->l)++] = ch;
|
|
}
|
|
}
|
|
/* ls_putb */
|
|
|
|
|
|
long int
|
|
get_Lstring
|
|
#ifdef STDC
|
|
(FILE * dtl, Lstring * lstr)
|
|
#else
|
|
(dtl, lstr)
|
|
FILE * dtl;
|
|
Lstring * lstr;
|
|
#endif
|
|
/* get a string from dtl file, store as an Lstring in *lstr. */
|
|
/* lstr must already be allocated and initialised. */
|
|
/* return length of Lstring *lstr */
|
|
{
|
|
U4 nch;
|
|
int char_status = CHAR_OK; /* OK so far */
|
|
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(get_Lstring) : entering get_Lstring.\n");
|
|
}
|
|
|
|
check_bmes (dtl);
|
|
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr,
|
|
"(get_Lstring) : string is: \"");
|
|
}
|
|
|
|
for (nch=0; ; nch++)
|
|
{
|
|
int ch;
|
|
|
|
char_status = read_string_char (dtl, &ch);
|
|
|
|
if (char_status == CHAR_FAIL)
|
|
{
|
|
/* end of dtl file, or reading error */
|
|
fprintf (stderr, "\n");
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(get_Lstring) : DTL FILE ERROR (%s) : ",
|
|
dtl_filename);
|
|
fprintf (stderr, "cannot read string[");
|
|
fprintf (stderr, UF4, nch);
|
|
fprintf (stderr, "] from dtl file.\n");
|
|
dexit (1);
|
|
}
|
|
|
|
if (debug)
|
|
{
|
|
fprintf (stderr, "%c", ch);
|
|
}
|
|
|
|
if (char_status == CHAR_EOS)
|
|
{
|
|
if (ch != EMES_CHAR)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(get_Lstring) : INTERNAL ERROR : ");
|
|
fprintf (stderr, "char_status = CHAR_FAIL,\n");
|
|
fprintf (stderr,
|
|
"but ch = %c (char %d) is not EMES_CHAR = %c (char %d)\n",
|
|
ch, ch, EMES_CHAR, EMES_CHAR);
|
|
dexit (1);
|
|
}
|
|
(Void) unread_char ();
|
|
break; /* end of string */
|
|
}
|
|
else if (char_status == CHAR_OK)
|
|
{
|
|
ls_putb (ch, lstr);
|
|
}
|
|
else
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(get_Lstring) : INTERNAL ERROR : ");
|
|
fprintf (stderr, "char_status = %d is unfamiliar!\n", char_status);
|
|
dexit (1);
|
|
}
|
|
}
|
|
/* end for */
|
|
|
|
if (debug)
|
|
{
|
|
fprintf (stderr, "\".\n");
|
|
}
|
|
|
|
check_emes (dtl);
|
|
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(get_Lstring) : leaving get_Lstring.\n");
|
|
}
|
|
|
|
return (lstr->l);
|
|
}
|
|
/* get_Lstring */
|
|
|
|
|
|
Void
|
|
put_Lstring
|
|
#ifdef STDC
|
|
(const Lstring * lstr, FILE * dvi)
|
|
#else
|
|
(str, dvi)
|
|
Lstring lstr;
|
|
FILE * dvi;
|
|
#endif
|
|
{
|
|
size_t fwret;
|
|
fwret = fwrite ((lstr->s), sizeof (char), (size_t) (lstr->l), dvi);
|
|
|
|
dvi_written += fwret;
|
|
|
|
if ((long int) fwret < lstr->l)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr,
|
|
"(put_Lstring) : DVI File ERROR : not all bytes written ");
|
|
fprintf (stderr, "(%ld of %ld).\n",
|
|
(long int) fwret, (long int) (lstr->l));
|
|
dexit (1);
|
|
}
|
|
}
|
|
/* put_Lstring */
|
|
|
|
|
|
U4
|
|
xfer_len_string
|
|
#ifdef STDC
|
|
(int n, FILE * dtl, FILE * dvi)
|
|
#else
|
|
(n, dtl, dvi)
|
|
int n;
|
|
FILE * dtl;
|
|
FILE * dvi;
|
|
#endif
|
|
/* transfer (length and) quoted string from dtl to dvi file, */
|
|
/* return number of bytes written to dvi file. */
|
|
{
|
|
U4 k, k2, lstr_maxsize;
|
|
Lstring lstr;
|
|
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(xfer_len_string) : entering xfer_len_string.\n");
|
|
}
|
|
|
|
/* k[n] : length of special string */
|
|
|
|
k = get_unsigned (dtl);
|
|
|
|
lstr_maxsize = (k > LSIZE) ? k : LSIZE;
|
|
init_Lstring (&lstr, lstr_maxsize);
|
|
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(xfer_len_string) : string's nominal length k = ");
|
|
fprintf (stderr, UF4, k);
|
|
fprintf (stderr, " characters.\n");
|
|
}
|
|
|
|
k2 = get_Lstring (dtl, &lstr);
|
|
|
|
if (k2 != k)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(xfer_len_string) : WARNING : string length (");
|
|
fprintf (stderr, UF4, k);
|
|
fprintf (stderr, ") in DTL file is wrong\n");
|
|
fprintf (stderr, "Writing correct value (");
|
|
fprintf (stderr, UF4, k2);
|
|
fprintf (stderr, ") to DVI file\n");
|
|
}
|
|
|
|
put_unsigned (n, k2, dvi);
|
|
|
|
put_Lstring (&lstr, dvi);
|
|
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(xfer_len_string) : leaving xfer_len_string.\n");
|
|
}
|
|
|
|
de_init_Lstring (&lstr);
|
|
|
|
return (n + k2);
|
|
}
|
|
/* xfer_len_string */
|
|
|
|
|
|
S4
|
|
xfer_bop_address
|
|
#ifdef STDC
|
|
(FILE * dtl, FILE * dvi)
|
|
#else
|
|
(dtl, dvi)
|
|
FILE * dtl;
|
|
FILE * dvi;
|
|
#endif
|
|
/* translate signed 4-byte bop address from dtl to dvi file. */
|
|
/* return value of bop address written to DVI file */
|
|
{
|
|
S4 snum = 0; /* at most this space needed for byte address */
|
|
COUNT nread = 0; /* number of DTL bytes read by read_token */
|
|
int nconv = 0; /* number of arguments converted by sscanf */
|
|
static Token token = ""; /* DTL token */
|
|
|
|
nread += read_token (dtl, token);
|
|
|
|
nconv = sscanf (token, SF4, &snum);
|
|
|
|
if (nconv != 1)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(xfer_bop_address) : DTL FILE ERROR (%s) : ",
|
|
dtl_filename);
|
|
fprintf (stderr, "signed number expected, not \"%s\".\n", token);
|
|
dexit (1);
|
|
}
|
|
|
|
if (snum != last_bop_address)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(xfer_bop_address) : WARNING : byte address (");
|
|
fprintf (stderr, WF, snum);
|
|
fprintf (stderr, ")\n");
|
|
fprintf (stderr, "for previous bop in DTL file is wrong\n");
|
|
fprintf (stderr, "Writing correct value (");
|
|
fprintf (stderr, WF, last_bop_address);
|
|
fprintf (stderr, ") to DVI file\n");
|
|
}
|
|
|
|
put_signed (4, last_bop_address, dvi);
|
|
|
|
return last_bop_address;
|
|
}
|
|
/* xfer_bop_address */
|
|
|
|
|
|
S4
|
|
xfer_postamble_address
|
|
#ifdef STDC
|
|
(FILE * dtl, FILE * dvi)
|
|
#else
|
|
(dtl, dvi)
|
|
FILE * dtl;
|
|
FILE * dvi;
|
|
#endif
|
|
/* translate signed 4-byte postamble address from dtl to dvi file. */
|
|
/* return value of postamble address written to DVI file */
|
|
{
|
|
S4 snum = 0; /* at most this space needed for byte address */
|
|
COUNT nread = 0; /* number of DTL bytes read by read_token */
|
|
int nconv = 0; /* number of arguments converted by sscanf */
|
|
static Token token = ""; /* DTL token */
|
|
|
|
nread += read_token (dtl, token);
|
|
|
|
nconv = sscanf (token, SF4, &snum);
|
|
|
|
if (nconv != 1)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(xfer_postamble_address) : DTL FILE ERROR (%s) : ",
|
|
dtl_filename);
|
|
fprintf (stderr, "signed number expected, not \"%s\".\n", token);
|
|
dexit (1);
|
|
}
|
|
|
|
if (snum != postamble_address)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(xfer_postamble_address) : WARNING : byte address (");
|
|
fprintf (stderr, WF, snum);
|
|
fprintf (stderr, ")\n");
|
|
fprintf (stderr, "for postamble in DTL file is wrong\n");
|
|
fprintf (stderr, "Writing correct value (");
|
|
fprintf (stderr, WF, postamble_address);
|
|
fprintf (stderr, ") to DVI file\n");
|
|
}
|
|
|
|
put_signed (4, postamble_address, dvi);
|
|
|
|
return postamble_address;
|
|
}
|
|
/* xfer_postamble_address */
|
|
|
|
|
|
int
|
|
put_table
|
|
#ifdef STDC
|
|
(op_table table, int opcode, FILE * dtl, FILE * dvi)
|
|
#else
|
|
(table, opcode, dtl, dvi)
|
|
op_table table;
|
|
int opcode;
|
|
FILE * dtl;
|
|
FILE * dvi;
|
|
#endif
|
|
{
|
|
/* table: {char * name; int first, last; op_info * list; }; */
|
|
/* op_info: {int code; char * name; int nargs; char * args; }; */
|
|
|
|
op_info op; /* entry in table */
|
|
int i;
|
|
int pos; /* current position in string being scanned */
|
|
static String args = "";
|
|
|
|
/* Defensive programming. */
|
|
if (opcode < table.first || opcode > table.last)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr,
|
|
"(put_table) : DTL FILE (OR INTERNAL) ERROR : opcode %d ", opcode);
|
|
fprintf (stderr, "is outside table %s [ %d to %d ] !\n",
|
|
table.name, table.first, table.last);
|
|
dexit (1);
|
|
}
|
|
|
|
op = table.list [ opcode - table.first ];
|
|
|
|
/* More defensive programming. */
|
|
if (opcode != op.code)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr,
|
|
"(put_table) : INTERNAL ERROR : opcode %d for command \"%s\"",
|
|
opcode, op.name);
|
|
fprintf (stderr, " faulty in table \"%s\".\n", table.name);
|
|
dexit (1);
|
|
}
|
|
|
|
/* process all the arguments, according to size and sign */
|
|
|
|
strncpy (args, op.args, MAXSTRLEN);
|
|
|
|
pos = 0;
|
|
for (i=0; i < op.nargs; i++)
|
|
{
|
|
int argtype = 0;
|
|
int nscan = 0; /* number of bytes read by sscanf */
|
|
int nconv = 0; /* number of sscanf arguments converted & assigned */
|
|
|
|
/* sscanf() does NOT advance over its input: */
|
|
/* C strings lack internal state information, which C files have. */
|
|
/* On Sun/OS, sscanf calls ungetc on the string it reads, */
|
|
/* which therefore has to be writable. */
|
|
|
|
nconv = sscanf (args + pos, "%d%n", &argtype, &nscan);
|
|
|
|
if (nconv < 1 || nscan < 1)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr,
|
|
"(put_table) : INTERNAL ERROR : internal read of table %s failed!\n",
|
|
table.name);
|
|
dexit (1);
|
|
}
|
|
|
|
pos += nscan;
|
|
|
|
if (argtype < 0)
|
|
xfer_signed (-argtype, dtl, dvi);
|
|
else
|
|
xfer_unsigned (argtype, dtl, dvi);
|
|
}
|
|
/* end for */
|
|
|
|
return 1; /* OK */
|
|
}
|
|
/* put_table */
|
|
|
|
|
|
/* ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */
|
|
|
|
|
|
U4
|
|
special
|
|
#ifdef STDC
|
|
(FILE * dtl, FILE * dvi, int n)
|
|
#else
|
|
(dtl, dvi, n)
|
|
FILE * dtl;
|
|
FILE * dvi;
|
|
int n;
|
|
#endif
|
|
/* read special (1 <= n <= 4 byte) data from dtl, and write in dvi */
|
|
/* return number of bytes written */
|
|
{
|
|
U4 nk;
|
|
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(special) : entering special.\n");
|
|
}
|
|
|
|
if (n < 1 || n > 4)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(special) : DTL FILE ERROR (%s) : special %d, ",
|
|
dtl_filename, n);
|
|
fprintf (stderr, "range is 1 to 4.\n");
|
|
dexit (1);
|
|
}
|
|
|
|
/* k[n] : length of special string */
|
|
/* x[k] : special string */
|
|
/* nk = n + k */
|
|
nk = xfer_len_string (n, dtl, dvi);
|
|
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(special) : leaving special.\n");
|
|
}
|
|
|
|
return (nk);
|
|
}
|
|
/* special */
|
|
|
|
|
|
int
|
|
fontdef
|
|
#ifdef STDC
|
|
(FILE * dtl, FILE * dvi, int suffix)
|
|
#else
|
|
(dtl, dvi, suffix)
|
|
FILE * dtl;
|
|
FILE * dvi;
|
|
int suffix;
|
|
#endif
|
|
/* read fontdef fnt_def1 .. fnt_def4 from dtl, and write in dvi */
|
|
/* suffix is the fontdef suffix : 1 to 4 */
|
|
/* return number of bytes written */
|
|
{
|
|
U4 a, l, a2, l2;
|
|
U4 k;
|
|
Lstring lstr1, lstr2;
|
|
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(fontdef) : entering fontdef.\n");
|
|
}
|
|
|
|
if (suffix < 1 || suffix > 4)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(fontdef) : DTL FILE ERROR (%s) : ",
|
|
dtl_filename);
|
|
fprintf (stderr, "font def %d, but range is 1 to 4.\n", suffix);
|
|
dexit (1);
|
|
}
|
|
|
|
init_Lstring (&lstr1, LSIZE);
|
|
init_Lstring (&lstr2, LSIZE);
|
|
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(fontdef) : about to read font number.\n");
|
|
}
|
|
|
|
/* k[suffix] : font number */
|
|
if (suffix == 4)
|
|
k = xfer_signed (suffix, dtl, dvi);
|
|
else
|
|
k = xfer_unsigned (suffix, dtl, dvi);
|
|
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(fontdef) : font ");
|
|
fprintf (stderr, UF4, k);
|
|
fprintf (stderr, ".\n");
|
|
}
|
|
|
|
#ifdef HEX_CHECKSUM
|
|
/* c[4] : (hexadecimal) checksum : I (gt) would prefer this */
|
|
xfer_hex (4, dtl, dvi);
|
|
#else /*NOT HEX_CHECKSUM */
|
|
/* c[4] : checksum (octal, for comparison with tftopl's .pl file) */
|
|
xfer_oct (4, dtl, dvi);
|
|
#endif
|
|
|
|
/* s[4] */
|
|
xfer_unsigned (4, dtl, dvi);
|
|
|
|
/* d[4] */
|
|
xfer_unsigned (4, dtl, dvi);
|
|
|
|
/* If DTL file's edited, a and l may be wrong. */
|
|
|
|
/* a[1] : length of font `area' (directory) portion of pathname string */
|
|
a = get_unsigned (dtl);
|
|
|
|
/* l[1] : length of font portion of pathname string */
|
|
l = get_unsigned (dtl);
|
|
|
|
/* n[a+l] : font pathname string <= area + font */
|
|
|
|
a2 = get_Lstring (dtl, &lstr1);
|
|
|
|
if (a2 != a)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(fontdef) : WARNING : font area string's length (");
|
|
fprintf (stderr, UF4, a);
|
|
fprintf (stderr, ") in DTL file is wrong\n");
|
|
fprintf (stderr, "Writing correct value (");
|
|
fprintf (stderr, UF4, a2);
|
|
fprintf (stderr, ") to DVI file\n");
|
|
}
|
|
|
|
put_unsigned (1, a2, dvi);
|
|
|
|
l2 = get_Lstring (dtl, &lstr2);
|
|
|
|
if (l2 != l)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(fontdef) : WARNING : font string's length (");
|
|
fprintf (stderr, UF4, l);
|
|
fprintf (stderr, ") in DTL file is wrong\n");
|
|
fprintf (stderr, "Writing correct value (");
|
|
fprintf (stderr, UF4, l2);
|
|
fprintf (stderr, ") to DVI file\n");
|
|
}
|
|
|
|
put_unsigned (1, l2, dvi);
|
|
|
|
put_Lstring (&lstr1, dvi);
|
|
put_Lstring (&lstr2, dvi);
|
|
|
|
de_init_Lstring (&lstr2);
|
|
de_init_Lstring (&lstr1);
|
|
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(fontdef) : leaving fontdef.\n");
|
|
}
|
|
|
|
return (suffix + 4*4 + 2*1 + a2 + l2);
|
|
}
|
|
/* fontdef */
|
|
|
|
|
|
U4
|
|
preamble
|
|
#ifdef STDC
|
|
(FILE * dtl, FILE * dvi)
|
|
#else
|
|
(dtl, dvi)
|
|
FILE * dtl;
|
|
FILE * dvi;
|
|
#endif
|
|
/* read preamble from dtl, and write in dvi */
|
|
/* return number of bytes written */
|
|
{
|
|
U4 k1;
|
|
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(preamble) : entering preamble.\n");
|
|
}
|
|
|
|
/* i[1] */
|
|
xfer_unsigned (1, dtl, dvi);
|
|
|
|
/* num[4] */
|
|
xfer_unsigned (4, dtl, dvi);
|
|
|
|
/* den[4] */
|
|
xfer_unsigned (4, dtl, dvi);
|
|
|
|
/* mag[4] */
|
|
xfer_unsigned (4, dtl, dvi);
|
|
|
|
/* k[1] : length of comment */
|
|
/* x[k] : comment string */
|
|
/* k1 = 1 + k */
|
|
k1 = xfer_len_string (1, dtl, dvi);
|
|
|
|
if (debug)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(preamble) : leaving preamble.\n");
|
|
}
|
|
|
|
return (1 + 3*4 + k1);
|
|
}
|
|
/* preamble */
|
|
|
|
|
|
int
|
|
postamble
|
|
#ifdef STDC
|
|
(FILE * dtl, FILE * dvi)
|
|
#else
|
|
(dtl, dvi)
|
|
FILE * dtl;
|
|
FILE * dvi;
|
|
#endif
|
|
/* read postamble from dtl, and write in dvi */
|
|
/* return number of bytes written */
|
|
{
|
|
postamble_address = dvi_written - 1;
|
|
|
|
/* p[4] : DVI address of previous bop command */
|
|
/* --- unsigned? --- or signed, as I assume? */
|
|
/* For, surely p should be -1 if the DVI file has NO bop? */
|
|
xfer_bop_address (dtl, dvi);
|
|
|
|
/* num[4] */
|
|
xfer_unsigned (4, dtl, dvi);
|
|
|
|
/* den[4] */
|
|
xfer_unsigned (4, dtl, dvi);
|
|
|
|
/* mag[4] */
|
|
xfer_unsigned (4, dtl, dvi);
|
|
|
|
/* l[4] */
|
|
xfer_unsigned (4, dtl, dvi);
|
|
|
|
/* u[4] */
|
|
xfer_unsigned (4, dtl, dvi);
|
|
|
|
/* s[2] */
|
|
xfer_unsigned (2, dtl, dvi);
|
|
|
|
/* t[2] */
|
|
xfer_unsigned (2, dtl, dvi);
|
|
|
|
return (6*4 + 2*2);
|
|
}
|
|
/* postamble */
|
|
|
|
|
|
int
|
|
post_post
|
|
#ifdef STDC
|
|
(FILE * dtl, FILE * dvi)
|
|
#else
|
|
(dtl, dvi)
|
|
FILE * dtl;
|
|
FILE * dvi;
|
|
#endif
|
|
/* read post_post from dtl, and write in dvi */
|
|
/* return number of bytes written */
|
|
{
|
|
/* hope I'm writing the "223" bytes in an 8-bit clean way */
|
|
int n223 = 0; /* number of "223" bytes in final padding */
|
|
|
|
/* q[4] : DVI address of post command */
|
|
/* --- unsigned? --- or signed, as I assume? */
|
|
/* what happens if there is NO postamble command? */
|
|
/* shouldn't q be -1 then? */
|
|
|
|
xfer_postamble_address (dtl, dvi);
|
|
|
|
/* i[1] : DVI identification byte = 2 */
|
|
xfer_unsigned (1, dtl, dvi);
|
|
|
|
for (n223 = 0; true; n223++)
|
|
{
|
|
COUNT nread = 0; /* number of DTL bytes read by read_token */
|
|
static Token token;
|
|
|
|
strcpy (token, "");
|
|
|
|
nread = read_token (dtl, token);
|
|
|
|
/* check whether end of dtl file */
|
|
if (nread == 0)
|
|
{
|
|
if (group)
|
|
{
|
|
/* dtl file shouldn't end before an ECOM */
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(post_post) : DTL FILE ERROR (%s) : ",
|
|
dtl_filename);
|
|
fprintf (stderr, "premature end of DTL file!\n");
|
|
fprintf (stderr,
|
|
"%d complete iterations of \"padding byte\" loop;\n", n223);
|
|
fprintf (stderr, "troublesome token = \"%s\"\n", token);
|
|
dexit (1);
|
|
}
|
|
/* leave the "223" loop */
|
|
break;
|
|
}
|
|
else if (strcmp (token, "223") == 0)
|
|
{
|
|
/* token is a "223" padding byte */
|
|
/* loop again */
|
|
}
|
|
else
|
|
{
|
|
/* read a non-empty token that wasn't "223" */
|
|
(Void) unread_char ();
|
|
if (group)
|
|
{
|
|
if (strcmp (token, ECOM) == 0)
|
|
{
|
|
/* end of DTL's post_post command */
|
|
}
|
|
else
|
|
{
|
|
/* error : expected end of post_post */
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(post_post) : DTL FILE ERROR (%s) : ",
|
|
dtl_filename);
|
|
fprintf (stderr, "token \"%s\" should be ECOM (\"%s\")\n",
|
|
token, ECOM);
|
|
dexit (1);
|
|
}
|
|
}
|
|
/* leave the "223" loop */
|
|
break;
|
|
}
|
|
}
|
|
/* end for */
|
|
|
|
if (n223 < 4)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(post_post) : DTL FILE ERROR (%s) : \n",
|
|
dtl_filename);
|
|
fprintf (stderr, "fewer than four `223' padding bytes.\n");
|
|
fprintf (stderr, "Will write at least four `223' padding bytes.\n");
|
|
}
|
|
|
|
/* check whether the DVI file size is a multiple of 4 bytes */
|
|
if ((dvi_written + n223) % 4 != 0)
|
|
{
|
|
PRINT_PROGNAME;
|
|
fprintf (stderr, "(post_post) : WARNING : \n");
|
|
fprintf (stderr, "DVI size ");
|
|
fprintf (stderr, WF, dvi_written);
|
|
fprintf (stderr, " (bytes) wouldn't be a multiple of 4 !\n");
|
|
fprintf (stderr,
|
|
"Will write (at least four) `223' padding bytes until it is.\n");
|
|
}
|
|
|
|
/* final padding of DVI file by "223" bytes to a multiple of 4 bytes, */
|
|
/* with at least 4 bytes */
|
|
|
|
for (n223 = 0; (n223 < 4) || (dvi_written % 4 != 0); n223++)
|
|
{
|
|
/* add a "223" padding byte */
|
|
put_byte (223, dvi);
|
|
}
|
|
|
|
return (4 + 1 + n223);
|
|
}
|
|
/* post_post */
|
|
|
|
|
|
/* end of dt2dv.c */
|