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Adopting arg.h with more flexible cmd handling.

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This commit is contained in:
Christoph Lohmann 2013-04-03 21:00:38 +02:00
parent 580c8bbd46
commit b1813b14d9
2 changed files with 111 additions and 60 deletions
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55
arg.h Normal file
View file

@ -0,0 +1,55 @@
/*
* Copy me if you can.
* by 20h
*/
#ifndef __ARG_H__
#define __ARG_H__
extern char *argv0;
#define USED(x) ((void)(x))
/* use main(int argc, char *argv[]) */
#define ARGBEGIN for (argv0 = *argv, argv++, argc--;\
argv[0] && argv[0][1]\
&& argv[0][0] == '-';\
argc--, argv++) {\
char _argc;\
char **_argv;\
int brk;\
if (argv[0][1] == '-' && argv[0][2] == '\0') {\
argv++;\
argc--;\
break;\
}\
for (brk = 0, argv[0]++, _argv = argv;\
argv[0][0] && !brk;\
argv[0]++) {\
if (_argv != argv)\
break;\
_argc = argv[0][0];\
switch (_argc)
#define ARGEND }\
USED(_argc);\
}\
USED(argv);\
USED(argc);
#define ARGC() _argc
#define EARGF(x) ((argv[0][1] == '\0' && argv[1] == NULL)?\
((x), abort(), (char *)0) :\
(brk = 1, (argv[0][1] != '\0')?\
(&argv[0][1]) :\
(argc--, argv++, argv[0])))
#define ARGF() ((argv[0][1] == '\0' && argv[1] == NULL)?\
(char *)0 :\
(brk = 1, (argv[0][1] != '\0')?\
(&argv[0][1]) :\
(argc--, argv++, argv[0])))
#endif

52
st.c
View file

@ -27,6 +27,10 @@
#include <X11/Xft/Xft.h>
#include <fontconfig/fontconfig.h>
#include "arg.h"
char *argv0;
#define Glyph Glyph_
#define Font Font_
#define Draw XftDraw *
@ -41,10 +45,6 @@
#include <libutil.h>
#endif
#define USAGE \
"st " VERSION " (c) 2010-2013 st engineers\n" \
"usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]" \
" [-t title] [-w windowid] [-e command ...]\n"
/* XEMBED messages */
#define XEMBED_FOCUS_IN 4
@ -3308,37 +3308,37 @@ run(void) {
}
}
void
usage(void) {
die("%s " VERSION " (c) 2010-2013 st engineers\n" \
"usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]" \
" [-t title] [-w windowid] [-e command ...]\n", argv0);
}
int
main(int argc, char *argv[]) {
int i, bitm, xr, yr;
int bitm, xr, yr;
uint wr, hr;
xw.fw = xw.fh = xw.fx = xw.fy = 0;
xw.isfixed = False;
for(i = 1; i < argc; i++) {
switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
ARGBEGIN {
case 'a':
allowaltscreen = false;
break;
case 'c':
if(++i < argc)
opt_class = argv[i];
opt_class = EARGF(usage());
break;
case 'e':
/* eat all remaining arguments */
if(++i < argc)
opt_cmd = &argv[i];
opt_cmd = &argv[1];
goto run;
case 'f':
if(++i < argc)
opt_font = argv[i];
opt_font = EARGF(usage());
break;
case 'g':
if(++i >= argc)
break;
bitm = XParseGeometry(argv[i], &xr, &yr, &wr, &hr);
bitm = XParseGeometry(EARGF(usage()), &xr, &yr, &wr, &hr);
if(bitm & XValue)
xw.fx = xr;
if(bitm & YValue)
@ -3356,22 +3356,18 @@ main(int argc, char *argv[]) {
xw.isfixed = True;
break;
case 'o':
if(++i < argc)
opt_io = argv[i];
opt_io = EARGF(usage());
break;
case 't':
if(++i < argc)
opt_title = argv[i];
opt_title = EARGF(usage());
break;
case 'w':
opt_embed = EARGF(usage());
break;
case 'v':
default:
die(USAGE);
case 'w':
if(++i < argc)
opt_embed = argv[i];
break;
}
}
usage();
} ARGEND;
run:
setlocale(LC_CTYPE, "");