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uemacs: Add --help option.
Add a basic usage() function to support the --help option. Signed-off-by: Thiago Farina <tfransosi@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Thiago Farina
Linus Torvalds
parent
dfc102ce3a
commit
8facd84c6f
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@ -1,4 +1,4 @@
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/* DISPLAY.C
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/* display.c
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*
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* The functions in this file handle redisplay. There are two halves, the
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* ones that update the virtual display screen, and the ones that make the
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@ -15,6 +15,7 @@
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#include "estruct.h"
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#include "edef.h"
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#include "efunc.h"
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#include "version.h"
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struct video {
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int v_flag; /* Flags */
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@ -1132,7 +1133,7 @@ static void modeline(struct window *wp)
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n = 2;
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strcpy(tline, " ");
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strcat(tline, PROGNAME);
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strcat(tline, PROGRAM_NAME_LONG);
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strcat(tline, " ");
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strcat(tline, VERSION);
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strcat(tline, ": ");
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33
estruct.h
33
estruct.h
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@ -21,24 +21,11 @@
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#undef CTRLZ
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#endif
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/* Program Identification.....
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PROGNAME should always be MicroEMACS for a distibrution
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unmodified version. People using MicroEMACS as a shell
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for other products should change this to reflect their
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product. Macros can query this via the $progname variable
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this version in called uEmacs/PK
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*/
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#define PROGNAME "uEmacs/PK"
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#define VERSION "4.0.15"
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/* Machine/OS definitions */
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/* Machine/OS definitions. */
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#if defined(AUTOCONF) || defined(MSDOS) || defined(BSD) || defined(SYSV) || defined(VMS)
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/* make an intelligent guess about the target system */
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/* Make an intelligent guess about the target system. */
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#if defined(__TURBOC__)
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#define MSDOS 1 /* MS/PC DOS 3.1-4.0 with Turbo C 2.0 */
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@ -72,7 +59,7 @@
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#define VMS 0
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#endif
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#define V7 0 /* no more */
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#define V7 0 /* No more. */
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#else
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@ -130,7 +117,7 @@
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#define TERMCAP UNIX
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#define IBMPC MSDOS
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#endif /*autoconf */
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#endif /* Autoconf. */
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/* Configuration options */
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@ -159,7 +146,7 @@
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#define FILOCK BSD
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#endif
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#endif /* autoconf */
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#endif /* Autoconf. */
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#define ISRCH 1 /* Incremental searches like ITS EMACS */
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#define WORDPRO 1 /* Advanced word processing features */
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@ -185,13 +172,13 @@
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#define XONXOFF (UNIX | VMS)
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#define NATIONL (UNIX | VMS)
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#endif /* autoconf */
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#endif /* Autoconf. */
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#define PKCODE 1 /* include my extensions P.K., define always */
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#define IBMCHR MSDOS /* use IBM PC character set P.K. */
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#define SCROLLCODE 1 /* scrolling code P.K. */
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/* System dependant library redefinitions, structures and includes */
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/* System dependant library redefinitions, structures and includes. */
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#if TURBO
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#include <dos.h>
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@ -220,7 +207,7 @@
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#define unlink(a) delete(a)
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#endif
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/* define some ability flags */
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/* Define some ability flags. */
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#if IBMPC
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#define MEMMAP 1
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@ -234,11 +221,11 @@
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#define ENVFUNC 0
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#endif
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/* Emacs global flag bit definitions (for gflags) */
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/* Emacs global flag bit definitions (for gflags). */
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#define GFREAD 1
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/* internal constants */
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/* Internal constants. */
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#define NBINDS 256 /* max # of bound keys */
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#define NFILEN 80 /* # of bytes, file name */
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13
eval.c
13
eval.c
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@ -1,4 +1,4 @@
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/* EVAL.C
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/* eval.c
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*
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* Expression evaluation functions
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*
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@ -12,19 +12,20 @@
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#include "efunc.h"
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#include "evar.h"
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#include "util.h"
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#include "version.h"
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/* Initialize the user variable list. */
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void varinit(void)
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{ /* initialize the user variable list */
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{
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int i;
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for (i = 0; i < MAXVARS; i++)
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uv[i].u_name[0] = 0;
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}
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/*
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* evaluate a function
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* Evaluate a function.
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*
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* char *fname; name of function to evaluate
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* @fname: name of function to evaluate.
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*/
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char *gtfun(char *fname)
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{
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@ -259,7 +260,7 @@ char *gtenv(char *vname)
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case EVVERSION:
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return (VERSION);
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case EVPROGNAME:
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return (PROGNAME);
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return (PROGRAM_NAME_LONG);
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case EVSEED:
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return (itoa(seed));
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case EVDISINP:
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24
main.c
24
main.c
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@ -60,6 +60,7 @@
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#include "edef.h" /* Global definitions. */
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#include "efunc.h" /* Function declarations and name table. */
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#include "ebind.h" /* Default key bindings. */
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#include "version.h"
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/* For MSDOS, increase the default stack space. */
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#if MSDOS & TURBO
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@ -87,6 +88,16 @@ extern void sizesignal(int);
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#endif
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#endif
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void usage(int status)
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{
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printf("Usage: %s filename\n", PROGRAM_NAME);
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printf(" or: %s [options]\n\n", PROGRAM_NAME);
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fputs(" --help display this help and exit\n", stdout);
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fputs(" --version output version information and exit\n", stdout);
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exit(status);
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}
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#if CALLED
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int emacs(int argc, char **argv)
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#else
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@ -117,11 +128,11 @@ int main(int argc, char **argv)
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int newc;
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#if PKCODE & VMS
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(void) umask(-1); /* use old protection (this is at wrong place) */
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(void) umask(-1); /* Use old protection (this is at wrong place). */
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#endif
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#if PKCODE & BSD
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sleep(1); /* time for window manager */
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sleep(1); /* Time for window manager. */
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#endif
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#if UNIX
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@ -130,13 +141,16 @@ int main(int argc, char **argv)
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#endif
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#endif
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if (argc == 2) {
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if (!strcmp(argv[1], "--version")) {
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printf("%s version %s\n", PROGNAME, VERSION);
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if (strcmp(argv[1], "--help") == 0) {
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usage(EXIT_FAILURE);
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}
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if (strcmp(argv[1], "--version") == 0) {
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printf("%s version %s\n", PROGRAM_NAME_LONG, VERSION);
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exit(EXIT_SUCCESS);
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}
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}
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/* initialize the editor */
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/* Initialize the editor. */
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vtinit(); /* Display */
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edinit("main"); /* Buffers, windows */
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varinit(); /* user variables */
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