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uemacs: Add --help option.

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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 2010-08-15 00:11:27 -03:00 committed by Linus Torvalds
parent dfc102ce3a
commit 8facd84c6f
5 changed files with 98 additions and 86 deletions
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19
display.c
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@ -1,4 +1,4 @@
/* DISPLAY.C /* display.c
* *
* The functions in this file handle redisplay. There are two halves, the * The functions in this file handle redisplay. There are two halves, the
* ones that update the virtual display screen, and the ones that make the * ones that update the virtual display screen, and the ones that make the
@ -8,13 +8,14 @@
* modified by Petri Kutvonen * modified by Petri Kutvonen
*/ */
#include <errno.h> #include <errno.h>
#include <stdio.h> #include <stdio.h>
#include <stdarg.h> #include <stdarg.h>
#include <unistd.h> #include <unistd.h>
#include "estruct.h" #include "estruct.h"
#include "edef.h" #include "edef.h"
#include "efunc.h" #include "efunc.h"
#include "version.h"
struct video { struct video {
int v_flag; /* Flags */ int v_flag; /* Flags */
@ -1132,7 +1133,7 @@ static void modeline(struct window *wp)
n = 2; n = 2;
strcpy(tline, " "); strcpy(tline, " ");
strcat(tline, PROGNAME); strcat(tline, PROGRAM_NAME_LONG);
strcat(tline, " "); strcat(tline, " ");
strcat(tline, VERSION); strcat(tline, VERSION);
strcat(tline, ": "); strcat(tline, ": ");

119
estruct.h
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@ -21,58 +21,45 @@
#undef CTRLZ #undef CTRLZ
#endif #endif
/* Program Identification..... /* Machine/OS definitions. */
PROGNAME should always be MicroEMACS for a distibrution
unmodified version. People using MicroEMACS as a shell
for other products should change this to reflect their
product. Macros can query this via the $progname variable
this version in called uEmacs/PK
*/
#define PROGNAME "uEmacs/PK"
#define VERSION "4.0.15"
/* Machine/OS definitions */
#if defined(AUTOCONF) || defined(MSDOS) || defined(BSD) || defined(SYSV) || defined(VMS) #if defined(AUTOCONF) || defined(MSDOS) || defined(BSD) || defined(SYSV) || defined(VMS)
/* make an intelligent guess about the target system */ /* Make an intelligent guess about the target system. */
#if defined(__TURBOC__) #if defined(__TURBOC__)
#define MSDOS 1 /* MS/PC DOS 3.1-4.0 with Turbo C 2.0 */ #define MSDOS 1 /* MS/PC DOS 3.1-4.0 with Turbo C 2.0 */
#else #else
#define MSDOS 0 #define MSDOS 0
#endif #endif
#if defined(BSD) || defined(sun) || defined(ultrix) || (defined(vax) && defined(unix)) || defined(ultrix) || defined(__osf__) #if defined(BSD) || defined(sun) || defined(ultrix) || (defined(vax) && defined(unix)) || defined(ultrix) || defined(__osf__)
#ifndef BSD #ifndef BSD
#define BSD 1 /* Berkeley UNIX */ #define BSD 1 /* Berkeley UNIX */
#endif #endif
#else #else
#define BSD 0 #define BSD 0
#endif #endif
#if defined(SVR4) || defined(__linux__) /* ex. SunOS 5.3 */ #if defined(SVR4) || defined(__linux__) /* ex. SunOS 5.3 */
#define SVR4 1 #define SVR4 1
#define SYSV 1 #define SYSV 1
#undef BSD #undef BSD
#endif #endif
#if defined(SYSV) || defined(u3b2) || defined(_AIX) || (defined(i386) && defined(unix)) || defined(__hpux) #if defined(SYSV) || defined(u3b2) || defined(_AIX) || (defined(i386) && defined(unix)) || defined(__hpux)
#define USG 1 /* System V UNIX */ #define USG 1 /* System V UNIX */
#else #else
#define USG 0 #define USG 0
#endif #endif
#if defined(VMS) || (defined(vax) && ! defined(unix)) #if defined(VMS) || (defined(vax) && ! defined(unix))
#define VMS 1 /* VAX/VMS */ #define VMS 1 /* VAX/VMS */
#else #else
#define VMS 0 #define VMS 0
#endif #endif
#define V7 0 /* no more */ #define V7 0 /* No more. */
#else #else
@ -130,25 +117,25 @@
#define TERMCAP UNIX #define TERMCAP UNIX
#define IBMPC MSDOS #define IBMPC MSDOS
#endif /*autoconf */ #endif /* Autoconf. */
/* Configuration options */ /* Configuration options */
#define CVMVAS 1 /* arguments to page forward/back in pages */ #define CVMVAS 1 /* arguments to page forward/back in pages */
#define CLRMSG 0 /* space clears the message line with no insert */ #define CLRMSG 0 /* space clears the message line with no insert */
#define CFENCE 1 /* fench matching in CMODE */ #define CFENCE 1 /* fench matching in CMODE */
#define TYPEAH 1 /* type ahead causes update to be skipped */ #define TYPEAH 1 /* type ahead causes update to be skipped */
#define DEBUGM 1 /* $debug triggers macro debugging */ #define DEBUGM 1 /* $debug triggers macro debugging */
#define VISMAC 0 /* update display during keyboard macros */ #define VISMAC 0 /* update display during keyboard macros */
#define CTRLZ 0 /* add a ^Z at end of files under MSDOS only */ #define CTRLZ 0 /* add a ^Z at end of files under MSDOS only */
#define ADDCR 0 /* ajout d'un CR en fin de chaque ligne (ST520) */ #define ADDCR 0 /* ajout d'un CR en fin de chaque ligne (ST520) */
#define NBRACE 1 /* new style brace matching command */ #define NBRACE 1 /* new style brace matching command */
#define REVSTA 1 /* Status line appears in reverse video */ #define REVSTA 1 /* Status line appears in reverse video */
#ifndef AUTOCONF #ifndef AUTOCONF
#define COLOR 1 /* color commands and windows */ #define COLOR 1 /* color commands and windows */
#define FILOCK 0 /* file locking under unix BSD 4.2 */ #define FILOCK 0 /* file locking under unix BSD 4.2 */
#else #else
@ -159,43 +146,43 @@
#define FILOCK BSD #define FILOCK BSD
#endif #endif
#endif /* autoconf */ #endif /* Autoconf. */
#define ISRCH 1 /* Incremental searches like ITS EMACS */ #define ISRCH 1 /* Incremental searches like ITS EMACS */
#define WORDPRO 1 /* Advanced word processing features */ #define WORDPRO 1 /* Advanced word processing features */
#define FNLABEL 0 /* function key label code [HP150] */ #define FNLABEL 0 /* function key label code [HP150] */
#define APROP 1 /* Add code for Apropos command */ #define APROP 1 /* Add code for Apropos command */
#define CRYPT 1 /* file encryption enabled? */ #define CRYPT 1 /* file encryption enabled? */
#define MAGIC 1 /* include regular expression matching? */ #define MAGIC 1 /* include regular expression matching? */
#define AEDIT 1 /* advanced editing options: en/detabbing */ #define AEDIT 1 /* advanced editing options: en/detabbing */
#define PROC 1 /* named procedures */ #define PROC 1 /* named procedures */
#define CLEAN 0 /* de-alloc memory on exit */ #define CLEAN 0 /* de-alloc memory on exit */
#define CALLED 0 /* is emacs a called subroutine? or stand alone */ #define CALLED 0 /* is emacs a called subroutine? or stand alone */
#define ASCII 1 /* always using ASCII char sequences for now */ #define ASCII 1 /* always using ASCII char sequences for now */
#define EBCDIC 0 /* later IBM mainfraim versions will use EBCDIC */ #define EBCDIC 0 /* later IBM mainfraim versions will use EBCDIC */
#ifndef AUTOCONF #ifndef AUTOCONF
#define XONXOFF 0 /* don't disable XON-XOFF flow control P.K. */ #define XONXOFF 0 /* don't disable XON-XOFF flow control P.K. */
#define NATIONL 0 /* interprete [,],\,{,},| as characters P.K. */ #define NATIONL 0 /* interprete [,],\,{,},| as characters P.K. */
#else #else
#define XONXOFF (UNIX | VMS) #define XONXOFF (UNIX | VMS)
#define NATIONL (UNIX | VMS) #define NATIONL (UNIX | VMS)
#endif /* autoconf */ #endif /* Autoconf. */
#define PKCODE 1 /* include my extensions P.K., define always */ #define PKCODE 1 /* include my extensions P.K., define always */
#define IBMCHR MSDOS /* use IBM PC character set P.K. */ #define IBMCHR MSDOS /* use IBM PC character set P.K. */
#define SCROLLCODE 1 /* scrolling code P.K. */ #define SCROLLCODE 1 /* scrolling code P.K. */
/* System dependant library redefinitions, structures and includes */ /* System dependant library redefinitions, structures and includes. */
#if TURBO #if TURBO
#include <dos.h> #include <dos.h>
#include <mem.h> #include <mem.h>
#undef peek #undef peek
#undef poke #undef poke
#define peek(a,b,c,d) movedata(a,b,FP_SEG(c),FP_OFF(c),d) #define peek(a,b,c,d) movedata(a,b,FP_SEG(c),FP_OFF(c),d)
@ -208,7 +195,7 @@
#define getname xgetname #define getname xgetname
#endif #endif
#if MSDOS & MSC #if MSDOS & MSC
#include <dos.h> #include <dos.h>
#include <memory.h> #include <memory.h>
#define peek(a,b,c,d) movedata(a,b,FP_SEG(c),FP_OFF(c),d) #define peek(a,b,c,d) movedata(a,b,FP_SEG(c),FP_OFF(c),d)
@ -220,7 +207,7 @@
#define unlink(a) delete(a) #define unlink(a) delete(a)
#endif #endif
/* define some ability flags */ /* Define some ability flags. */
#if IBMPC #if IBMPC
#define MEMMAP 1 #define MEMMAP 1
@ -234,11 +221,11 @@
#define ENVFUNC 0 #define ENVFUNC 0
#endif #endif
/* Emacs global flag bit definitions (for gflags) */ /* Emacs global flag bit definitions (for gflags). */
#define GFREAD 1 #define GFREAD 1
/* internal constants */ /* Internal constants. */
#define NBINDS 256 /* max # of bound keys */ #define NBINDS 256 /* max # of bound keys */
#define NFILEN 80 /* # of bytes, file name */ #define NFILEN 80 /* # of bytes, file name */

13
eval.c
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@ -1,4 +1,4 @@
/* EVAL.C /* eval.c
* *
* Expression evaluation functions * Expression evaluation functions
* *
@ -12,19 +12,20 @@
#include "efunc.h" #include "efunc.h"
#include "evar.h" #include "evar.h"
#include "util.h" #include "util.h"
#include "version.h"
/* Initialize the user variable list. */
void varinit(void) void varinit(void)
{ /* initialize the user variable list */ {
int i; int i;
for (i = 0; i < MAXVARS; i++) for (i = 0; i < MAXVARS; i++)
uv[i].u_name[0] = 0; uv[i].u_name[0] = 0;
} }
/* /*
* evaluate a function * Evaluate a function.
* *
* char *fname; name of function to evaluate * @fname: name of function to evaluate.
*/ */
char *gtfun(char *fname) char *gtfun(char *fname)
{ {
@ -259,7 +260,7 @@ char *gtenv(char *vname)
case EVVERSION: case EVVERSION:
return (VERSION); return (VERSION);
case EVPROGNAME: case EVPROGNAME:
return (PROGNAME); return (PROGRAM_NAME_LONG);
case EVSEED: case EVSEED:
return (itoa(seed)); return (itoa(seed));
case EVDISINP: case EVDISINP:

24
main.c
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@ -60,6 +60,7 @@
#include "edef.h" /* Global definitions. */ #include "edef.h" /* Global definitions. */
#include "efunc.h" /* Function declarations and name table. */ #include "efunc.h" /* Function declarations and name table. */
#include "ebind.h" /* Default key bindings. */ #include "ebind.h" /* Default key bindings. */
#include "version.h"
/* For MSDOS, increase the default stack space. */ /* For MSDOS, increase the default stack space. */
#if MSDOS & TURBO #if MSDOS & TURBO
@ -87,6 +88,16 @@ extern void sizesignal(int);
#endif #endif
#endif #endif
void usage(int status)
{
printf("Usage: %s filename\n", PROGRAM_NAME);
printf(" or: %s [options]\n\n", PROGRAM_NAME);
fputs(" --help display this help and exit\n", stdout);
fputs(" --version output version information and exit\n", stdout);
exit(status);
}
#if CALLED #if CALLED
int emacs(int argc, char **argv) int emacs(int argc, char **argv)
#else #else
@ -117,11 +128,11 @@ int main(int argc, char **argv)
int newc; int newc;
#if PKCODE & VMS #if PKCODE & VMS
(void) umask(-1); /* use old protection (this is at wrong place) */ (void) umask(-1); /* Use old protection (this is at wrong place). */
#endif #endif
#if PKCODE & BSD #if PKCODE & BSD
sleep(1); /* time for window manager */ sleep(1); /* Time for window manager. */
#endif #endif
#if UNIX #if UNIX
@ -130,13 +141,16 @@ int main(int argc, char **argv)
#endif #endif
#endif #endif
if (argc == 2) { if (argc == 2) {
if (!strcmp(argv[1], "--version")) { if (strcmp(argv[1], "--help") == 0) {
printf("%s version %s\n", PROGNAME, VERSION); usage(EXIT_FAILURE);
}
if (strcmp(argv[1], "--version") == 0) {
printf("%s version %s\n", PROGRAM_NAME_LONG, VERSION);
exit(EXIT_SUCCESS); exit(EXIT_SUCCESS);
} }
} }
/* initialize the editor */ /* Initialize the editor. */
vtinit(); /* Display */ vtinit(); /* Display */
edinit("main"); /* Buffers, windows */ edinit("main"); /* Buffers, windows */
varinit(); /* user variables */ varinit(); /* user variables */

9
version.h Normal file
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@ -0,0 +1,9 @@
#ifndef VERSION_H_
#define VERSION_H_
#define PROGRAM_NAME "em"
#define PROGRAM_NAME_LONG "uEmacs/Pk"
#define VERSION "4.0.15"
#endif // VERSION_H_