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https://github.com/sheumann/hush.git
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shells: remove few statics and duplicated code
(much more of the same remains, alas) function old new delta doset 330 332 +2 warn 53 51 -2 onecommand 463 461 -2 ioecho 40 38 -2 forkexec 1412 1410 -2 err 81 79 -2 setdash 59 56 -3 flag 4 - -4 msh_main 1389 1384 -5 eval 388 381 -7 subgetc 759 747 -12 static.local 14 - -14 b_adduint 70 52 -18 ------------------------------------------------------------------------------ (add/remove: 0/2 grow/shrink: 1/10 up/down: 2/-73) Total: -71 bytes
This commit is contained in:
Denis Vlasenko
parent
ac678ec2f1
commit
7d4c44e1b1
32
shell/hush.c
32
shell/hush.c
@ -20,7 +20,6 @@
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* rewrites.
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*
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* Other credits:
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* simple_itoa() was lifted from boa-0.93.15
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* b_addchr() derived from similar w_addchar function in glibc-2.2
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* setup_redirect(), redirect_opt_num(), and big chunks of main()
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* and many builtins derived from contributions by Erik Andersen
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@ -280,7 +279,7 @@ struct built_in_command {
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/* belongs in busybox.h */
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static int max(int a, int b)
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{
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return (a>b)?a:b;
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return (a > b) ? a : b;
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}
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/* This should be in utility.c */
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@ -811,23 +810,12 @@ static int b_addqchr(o_string *o, int ch, int quote)
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return b_addchr(o, ch);
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}
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/* belongs in utility.c */
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static char *simple_itoa(unsigned i)
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{
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static char local[sizeof(int)*3 + 2];
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char *p = &local[sizeof(int)*3 + 2 - 1];
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*p-- = '\0';
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do {
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*p-- = '0' + i % 10;
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i /= 10;
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} while (i > 0);
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return p + 1;
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}
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static int b_adduint(o_string *o, unsigned i)
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{
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int r;
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char *p = simple_itoa(i);
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char buf[sizeof(unsigned)*3 + 1];
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char *p = buf;
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*(utoa_to_buf(i, buf, sizeof(buf))) = '\0';
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/* no escape checking necessary */
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do r = b_addchr(o, *p++); while (r == 0 && *p);
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return r;
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@ -2008,8 +1996,8 @@ static int reserved_word(o_string *dest, struct p_context *ctx)
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{ "do", RES_DO, FLAG_DONE },
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{ "done", RES_DONE, FLAG_END }
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};
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enum { NRES = sizeof(reserved_list)/sizeof(reserved_list[0]) };
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const struct reserved_combo *r;
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#define NRES sizeof(reserved_list)/sizeof(reserved_list[0])
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for (r = reserved_list; r < reserved_list+NRES; r++) {
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if (strcmp(dest->data, r->literal) == 0) {
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@ -2114,10 +2102,12 @@ static int done_command(struct p_context *ctx)
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if (prog && prog->group == NULL
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&& prog->argv == NULL
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&& prog->redirects == NULL) {
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&& prog->redirects == NULL
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) {
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debug_printf("done_command: skipping null command\n");
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return 0;
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} else if (prog) {
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}
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if (prog) {
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pi->num_progs++;
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debug_printf("done_command: num_progs incremented to %d\n", pi->num_progs);
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} else {
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@ -2172,7 +2162,7 @@ static int redirect_dup_num(struct in_str *input)
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return -3; /* "-" represents "close me" */
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}
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while (isdigit(ch)) {
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d = d*10+(ch-'0');
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d = d*10 + (ch-'0');
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ok = 1;
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b_getch(input);
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ch = b_peek(input);
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@ -2226,7 +2216,7 @@ static FILE *generate_stream_from_list(struct pipe *head)
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} else if (pid == 0) {
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close(channel[0]);
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if (channel[1] != 1) {
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dup2(channel[1],1);
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dup2(channel[1], 1);
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close(channel[1]);
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}
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_exit(run_list_real(head)); /* leaks memory */
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36
shell/msh.c
36
shell/msh.c
@ -264,10 +264,6 @@ static const char *const T_CMD_NAMES[] = {
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#define DOALL (DOSUB|DOBLANK|DOGLOB|DOKEY|DOTRIM)
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/* PROTOTYPES */
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static int newfile(char *s);
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struct brkcon {
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jmp_buf brkpt;
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struct brkcon *nextlev;
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@ -285,8 +281,8 @@ struct brkcon {
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* -u: unset variables net diagnostic
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*/
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static char flags['z' - 'a' + 1];
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/* this looks weird, but is OK ... we index flag with 'a'...'z' */
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static char *flag = flags - 'a';
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/* this looks weird, but is OK ... we index FLAG with 'a'...'z' */
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#define FLAG (flags - 'a')
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/* moved to G: static char *trap[_NSIG + 1]; */
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/* moved to G: static char ourtrap[_NSIG + 1]; */
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@ -693,7 +689,7 @@ static int intr; /* interrupt pending */
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static int inparse;
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static char *null = (char*)""; /* null value for variable */
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static int heedint = 1; /* heed interrupt signals */
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static void (*qflag) (int) = SIG_IGN;
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static void (*qflag)(int) = SIG_IGN;
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static int startl;
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static int peeksym;
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static int nlseen;
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@ -855,14 +851,14 @@ static void warn(const char *s)
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exstat = -1;
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}
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prs("\n");
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if (flag['e'])
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if (FLAG['e'])
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leave();
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}
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static void err(const char *s)
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{
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warn(s);
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if (flag['n'])
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if (FLAG['n'])
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return;
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if (!interactive)
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leave();
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@ -1295,7 +1291,7 @@ static void setdash(void)
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cp = m;
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for (c = 'a'; c <= 'z'; c++)
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if (flag[c])
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if (FLAG[c])
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*cp++ = c;
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*cp = '\0';
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setval(lookup("-"), m);
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@ -1401,7 +1397,7 @@ static void onecommand(void)
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intr = 0;
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execflg = 0;
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if (!flag['n']) {
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if (!FLAG['n']) {
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DBGPRINTF(("ONECOMMAND: calling execute, t=outtree=%p\n",
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outtree));
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execute(outtree, NOPIPE, NOPIPE, 0);
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@ -2736,7 +2732,7 @@ static int forkexec(struct op *t, int *pin, int *pout, int act, char **wp)
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/* strip all initial assignments */
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/* not correct wrt PATH=yyy command etc */
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if (flag['x']) {
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if (FLAG['x']) {
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DBGPRINTF9(("FORKEXEC: echo'ing, cp=%p, wp=%p, owp=%p\n",
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cp, wp, owp));
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echo(cp ? wp : owp);
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@ -3598,18 +3594,18 @@ static int doset(struct op *t)
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/* bad: t->words++; */
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for (n = 0; (t->words[n] = t->words[n + 1]) != NULL; n++);
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if (*++cp == 0)
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flag['x'] = flag['v'] = 0;
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FLAG['x'] = FLAG['v'] = 0;
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else {
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for (; *cp; cp++) {
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switch (*cp) {
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case 'e':
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if (!interactive)
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flag['e']++;
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FLAG['e']++;
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break;
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default:
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if (*cp >= 'a' && *cp <= 'z')
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flag[(int) *cp]++;
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FLAG[(int) *cp]++;
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break;
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}
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}
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@ -3692,14 +3688,14 @@ static char **eval(char **ap, int f)
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if (newenv(setjmp(errpt)) == 0) {
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while (*ap && isassign(*ap))
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expand(*ap++, &wb, f & ~DOGLOB);
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if (flag['k']) {
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if (FLAG['k']) {
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for (wf = ap; *wf; wf++) {
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if (isassign(*wf))
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expand(*wf, &wb, f & ~DOGLOB);
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}
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}
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for (wb = addword((char *) 0, wb); *ap; ap++) {
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if (!flag['k'] || !isassign(*ap))
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if (!FLAG['k'] || !isassign(*ap))
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expand(*ap, &wb, f & ~DOKEY);
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}
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wb = addword((char *) 0, wb);
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@ -3992,7 +3988,7 @@ static int dollar(int quoted)
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}
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} else if (c == '+')
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dolp = strsave(cp, areanum);
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if (flag['u'] && dolp == null) {
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if (FLAG['u'] && dolp == null) {
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prs("unset variable: ");
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err(s);
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gflg++;
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@ -4613,7 +4609,7 @@ static int readc(void)
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static void ioecho(char c)
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{
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if (flag['v'])
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if (FLAG['v'])
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write(2, &c, sizeof c);
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}
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@ -5278,7 +5274,7 @@ int msh_main(int argc, char **argv)
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interactive++;
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default:
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if (*s >= 'a' && *s <= 'z')
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flag[(int) *s]++;
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FLAG[(int) *s]++;
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}
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} else {
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argv--;
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