2 * Copyright (C) 1984-2023 Mark Nudelman
4 * You may distribute under the terms of either the GNU General Public
5 * License or the Less License, as specified in the README file.
7 * For more information, see the README file.
11 /* DOS definition file for less. */
13 * This file has 2 sections:
15 * Settings always true for MS-DOS systems.
18 /* User preferences. */
21 * SECURE is 1 if you wish to disable a bunch of features in order to
22 * be safe to run by unprivileged users.
27 * SHELL_ESCAPE is 1 if you wish to allow shell escapes.
28 * (This is possible only if your system supplies the system() function.)
30 #define SHELL_ESCAPE (!SECURE)
33 * EXAMINE is 1 if you wish to allow examining files by name from within less.
35 #define EXAMINE (!SECURE)
38 * TAB_COMPLETE_FILENAME is 1 if you wish to allow the TAB key
39 * to complete filenames at prompts.
41 #define TAB_COMPLETE_FILENAME (!SECURE)
44 * CMD_HISTORY is 1 if you wish to allow keys to cycle through
45 * previous commands at prompts.
50 * HILITE_SEARCH is 1 if you wish to have search targets to be
51 * displayed in standout mode.
53 #define HILITE_SEARCH 1
56 * EDITOR is 1 if you wish to allow editor invocation (the "v" command).
57 * (This is possible only if your system supplies the system() function.)
58 * EDIT_PGM is the name of the (default) editor to be invoked.
60 #define EDITOR (!SECURE)
64 * TAGS is 1 if you wish to support tag files.
66 #define TAGS (!SECURE)
69 * USERFILE is 1 if you wish to allow a .less file to specify
70 * user-defined key bindings.
72 #define USERFILE (!SECURE)
75 * GLOB is 1 if you wish to have shell metacharacters expanded in filenames.
76 * This will generally work if your system provides the "popen" function
77 * and the "echo" shell command.
80 #define GLOB (!SECURE)
86 * PIPEC is 1 if you wish to have the "|" command
87 * which allows the user to pipe data into a shell command.
90 #define PIPEC (!SECURE)
96 * LOGFILE is 1 if you wish to allow the -o option (to create log files).
98 #define LOGFILE (!SECURE)
101 * GNU_OPTIONS is 1 if you wish to support the GNU-style command
102 * line options --help and --version.
104 #define GNU_OPTIONS 1
107 * ONLY_RETURN is 1 if you want RETURN to be the only input which
108 * will continue past an error message.
109 * Otherwise, any key will continue past an error message.
111 #define ONLY_RETURN 0
114 * LESSKEYFILE is the filename of the default lesskey output file
115 * (in the HOME directory).
116 * LESSKEYFILE_SYS is the filename of the system-wide lesskey output file.
117 * DEF_LESSKEYINFILE is the filename of the default lesskey input
118 * (in the HOME directory).
119 * LESSHISTFILE is the filename of the history file
120 * (in the HOME directory).
122 #define LESSKEYFILE "_less"
123 #define LESSKEYFILE_SYS "c:\\_sysless"
124 #define DEF_LESSKEYINFILE "_lesskey"
125 #define LESSKEYINFILE_SYS "c:\\_syslesskey"
126 #define LESSHISTFILE "_lesshst"
129 /* Settings always true for MS-DOS systems. */
132 * Define MSDOS_COMPILER if compiling for MS-DOS.
135 #define MSDOS_COMPILER DJGPPC
138 #define MSDOS_COMPILER BORLANDC
140 #define MSDOS_COMPILER MSOFTC
145 * Pathname separator character.
147 #define PATHNAME_SEP "\\"
150 * HAVE_ANSI_PROTOS is 1 if your compiler supports ANSI function prototypes.
152 #define HAVE_ANSI_PROTOS 1
155 * HAVE_SYS_TYPES_H is 1 if your system has <sys/types.h>.
157 #define HAVE_SYS_TYPES_H 1
160 * Define if you have the <sgstat.h> header file.
162 #define HAVE_SGSTAT_H 0
165 * HAVE_PERROR is 1 if your system has the perror() call.
166 * (Actually, if it has sys_errlist, sys_nerr and errno.)
168 #define HAVE_PERROR 1
171 * HAVE_TIME is 1 if your system has the time() call.
176 * HAVE_SHELL is 1 if your system supports a SHELL command interpreter.
181 * Default shell metacharacters and meta-escape character.
183 #define DEF_METACHARS "; *?\t\n'\"()<>|&"
184 #define DEF_METAESCAPE ""
187 * HAVE_DUP is 1 if your system has the dup() call.
191 /* Define to 1 to support reading lesskey source files (not just binary). */
192 #define HAVE_LESSKEYSRC 1
195 * Sizes of various buffers.
197 #if 0 /* old sizes for small memory machines
198 #define CMDBUF_SIZE 512 /* Buffer for multichar commands */
199 #define UNGOT_SIZE 100 /* Max chars to unget() */
200 #define LINEBUF_SIZE 1024 /* Max size of line in input file */
201 #define OUTBUF_SIZE 1024 /* Output buffer */
202 #define PROMPT_SIZE 200 /* Max size of prompt string */
203 #define TERMBUF_SIZE 2048 /* Termcap buffer for tgetent */
204 #define TERMSBUF_SIZE 1024 /* Buffer to hold termcap strings */
205 #define TAGLINE_SIZE 512 /* Max size of line in tags file */
206 #define TABSTOP_MAX 32 /* Max number of custom tab stops */
207 #else /* more reasonable sizes for modern machines */
208 #define CMDBUF_SIZE 2048 /* Buffer for multichar commands */
209 #define UNGOT_SIZE 200 /* Max chars to unget() */
210 #define LINEBUF_SIZE 1024 /* Initial max size of line in input file */
211 #define OUTBUF_SIZE 1024 /* Output buffer */
212 #define PROMPT_SIZE 2048 /* Max size of prompt string */
213 #define TERMBUF_SIZE 2048 /* Termcap buffer for tgetent */
214 #define TERMSBUF_SIZE 1024 /* Buffer to hold termcap strings */
215 #define TAGLINE_SIZE 1024 /* Max size of line in tags file */
216 #define TABSTOP_MAX 128 /* Max number of custom tab stops */
219 /* Define to `long' if <sys/types.h> doesn't define. */
220 #if MSDOS_COMPILER==BORLANDC
224 /* Define if you need to in order for stat and other things to work. */
225 /* #undef _POSIX_SOURCE */
227 /* Define as the return type of signal handlers (int or void). */
228 #define RETSIGTYPE void
232 * Regular expression library.
233 * Define exactly one of the following to be 1:
234 * HAVE_POSIX_REGCOMP: POSIX regcomp() and regex.h
235 * HAVE_RE_COMP: BSD re_comp()
236 * HAVE_REGCMP: System V regcmp()
237 * HAVE_V8_REGCOMP: Henry Spencer V8 regcomp() and regexp.h
238 * NO_REGEX: pattern matching is supported, but without metacharacters.
240 /* #undef HAVE_POSIX_REGCOMP */
241 /* #undef HAVE_RE_COMP */
242 /* #undef HAVE_REGCMP */
243 /* #undef HAVE_V8_REGCOMP */
244 #if MSDOS_COMPILER==DJGPPC
245 #define HAVE_POSIX_REGCOMP 1
250 /* Define HAVE_VOID if your compiler supports the "void" type. */
253 /* Define HAVE_CONST if your compiler supports the "const" modifier. */
256 /* Define HAVE_TIME_T if your system supports the "time_t" type. */
257 #define HAVE_TIME_T 1
259 /* Define HAVE_STRERROR if you have the strerror() function. */
260 #define HAVE_STRERROR 1
262 /* Define HAVE_FILENO if you have the fileno() macro. */
263 #define HAVE_FILENO 1
265 /* Define HAVE_ERRNO if you have the errno variable */
266 /* Define MUST_DEFINE_ERRNO if you have errno but it is not defined
268 #if MSDOS_COMPILER==MSOFTC || MSDOS_COMPILER==DJGPPC
270 #define MUST_DEFINE_ERRNO 0
273 #define MUST_DEFINE_ERRNO 1
276 /* Define HAVE_SYS_ERRLIST if you have the sys_errlist[] variable */
277 #define HAVE_SYS_ERRLIST 1
279 /* Define HAVE_OSPEED if your termcap library has the ospeed variable */
280 /* Define MUST_DEFINE_OSPEED if you have ospeed but it is not defined
282 #define HAVE_OSPEED 0
283 #define MUST_DEFINE_OSPEED 0
285 /* Define HAVE_LOCALE if you have locale.h and setlocale. */
286 #define HAVE_LOCALE 0
288 /* Define HAVE_TERMIOS_FUNCS if you have tcgetattr/tcsetattr */
289 #define HAVE_TERMIOS_FUNCS 0
291 /* Define HAVE_UPPER_LOWER if you have isupper, islower, toupper, tolower */
292 #define HAVE_UPPER_LOWER 1
294 /* Define if you have the _setjmp function. */
295 #if MSDOS_COMPILER==MSOFTC || MSDOS_COMPILER==DJGPPC
296 #define HAVE__SETJMP 0
298 #define HAVE__SETJMP 1
301 /* Define if you have the memcpy function. */
302 #define HAVE_MEMCPY 1
304 /* Define if you have the popen function. */
305 #if MSDOS_COMPILER==DJGPPC
311 /* Define if you have the sigsetmask function. */
312 #define HAVE_SIGSETMASK 0
314 /* Define if you have the sigprocmask function. */
315 #define HAVE_SIGPROCMASK 0
317 /* Define if you have the sigset_t type and sigemptyset macro */
318 #define HAVE_SIGSET_T 0
319 #define HAVE_SIGEMPTYSET 0
321 /* Define if you have the stat function. */
324 /* Define if you have the strchr function. */
325 #define HAVE_STRCHR 1
327 /* Define if you have the system function. */
328 #define HAVE_SYSTEM 1
330 /* Define if you have the snprintf function. */
331 #define HAVE_SNPRINTF 0
333 /* Define if you have the <ctype.h> header file. */
334 #define HAVE_CTYPE_H 1
336 /* Define if you have the <wctype.h> header file. */
337 #define HAVE_WCTYPE_H 0
339 /* Define if you have the <errno.h> header file. */
340 #define HAVE_ERRNO_H 1
342 /* Define if you have the <fcntl.h> header file. */
343 #define HAVE_FCNTL_H 1
345 /* Define if you have the <limits.h> header file. */
346 #define HAVE_LIMITS_H 1
348 /* Define if you have the <stdio.h> header file. */
349 #define HAVE_STDIO_H 1
351 /* Define if you have the <stdlib> header file. */
352 #define HAVE_STDLIB_H 1
354 /* Define if you have the <string.h> header file. */
355 #define HAVE_STRING_H 1
357 /* Define if you have the <sys/ioctl.h> header file. */
358 #define HAVE_SYS_IOCTL_H 0
360 /* Define if you have the <sys/ptem.h> header file. */
361 #define HAVE_SYS_PTEM_H 0
363 /* Define if you have the <sys/stream.h> header file. */
364 #define HAVE_SYS_STREAM_H 0
366 /* Define if you have the <termcap.h> header file. */
367 #define HAVE_TERMCAP_H 0
369 /* Define if you have the <termio.h> header file. */
370 #define HAVE_TERMIO_H 0
372 /* Define if you have the <termios.h> header file. */
373 #define HAVE_TERMIOS_H 0
375 /* Define if you have the <time.h> header file. */
376 #define HAVE_TIME_H 1
378 /* Define if you have the <unistd.h> header file. */
379 #if MSDOS_COMPILER==DJGPPC
380 #define HAVE_UNISTD_H 1
382 #define HAVE_UNISTD_H 0
385 /* Define if you have the <values.h> header file. */
386 #if MSDOS_COMPILER==MSOFTC
387 #define HAVE_VALUES_H 0
389 #define HAVE_VALUES_H 1
392 #if MSDOS_COMPILER == MSOFTC && _MSC_VER >= 700
394 * The names of these things changed in Microsoft C version 7.0.
396 #define videoconfig _videoconfig
397 #define rccoord _rccoord
398 #define O_RDONLY _O_RDONLY
399 #define O_WRONLY _O_WRONLY
400 #define O_APPEND _O_APPEND
401 #define O_BINARY _O_BINARY
402 #define O_TEXT _O_TEXT
403 #define find_t _find_t
405 #define S_IFMT _S_IFMT
406 #define S_IFDIR _S_IFDIR
407 #define S_IFREG _S_IFREG
414 #define isatty _isatty
417 #define ungetch _ungetch