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ash: code shrink
function old new delta copynode 171 180 +9 evaltreenr 615 621 +6 evaltree 615 621 +6 calcsize 121 127 +6 evalpipe 349 350 +1 redirect 1059 1057 -2 parseheredoc 129 126 -3 makename 35 32 -3 expredir 130 127 -3 parsefname 224 219 -5 popstring 140 134 -6 pipeline 276 268 -8 list 360 351 -9 readtoken1 3157 3130 -27 parse_command 1504 1460 -44 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 5/10 up/down: 28/-110) Total: -82 bytes
This commit is contained in:
Denis Vlasenko
parent
49a5eba9ae
commit
2dc240c0d6
68
shell/ash.c
68
shell/ash.c
@ -526,66 +526,66 @@ static const char dolatstr[] ALIGN1 = {
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union node;
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struct ncmd {
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int type;
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smallint type; /* Nxxxx */
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union node *assign;
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union node *args;
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union node *redirect;
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};
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struct npipe {
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int type;
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int backgnd;
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smallint type;
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smallint pipe_backgnd;
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struct nodelist *cmdlist;
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};
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struct nredir {
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int type;
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smallint type;
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union node *n;
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union node *redirect;
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};
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struct nbinary {
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int type;
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smallint type;
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union node *ch1;
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union node *ch2;
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};
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struct nif {
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int type;
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smallint type;
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union node *test;
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union node *ifpart;
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union node *elsepart;
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};
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struct nfor {
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int type;
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smallint type;
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union node *args;
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union node *body;
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char *var;
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};
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struct ncase {
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int type;
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smallint type;
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union node *expr;
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union node *cases;
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};
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struct nclist {
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int type;
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smallint type;
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union node *next;
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union node *pattern;
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union node *body;
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};
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struct narg {
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int type;
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smallint type;
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union node *next;
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char *text;
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struct nodelist *backquote;
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};
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struct nfile {
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int type;
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smallint type;
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union node *next;
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int fd;
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union node *fname;
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@ -593,7 +593,7 @@ struct nfile {
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};
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struct ndup {
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int type;
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smallint type;
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union node *next;
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int fd;
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int dupfd;
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@ -601,19 +601,19 @@ struct ndup {
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};
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struct nhere {
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int type;
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smallint type;
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union node *next;
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int fd;
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union node *doc;
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};
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struct nnot {
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int type;
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smallint type;
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union node *com;
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};
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union node {
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int type;
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smallint type;
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struct ncmd ncmd;
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struct npipe npipe;
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struct nredir nredir;
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@ -954,7 +954,7 @@ shtree(union node *n, int ind, char *pfx, FILE *fp)
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if (lp->next)
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fputs(" | ", fp);
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}
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if (n->npipe.backgnd)
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if (n->npipe.pipe_backgnd)
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fputs(" &", fp);
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if (ind >= 0)
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putc('\n', fp);
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@ -4899,7 +4899,6 @@ dupredirect(union node *redir, int f)
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static void
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redirect(union node *redir, int flags)
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{
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union node *n;
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struct redirtab *sv;
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int i;
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int fd;
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@ -4920,14 +4919,13 @@ redirect(union node *redir, int flags)
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sv->renamed[i] = EMPTY;
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g_nullredirs = 0;
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}
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n = redir;
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do {
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fd = n->nfile.fd;
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if ((n->nfile.type == NTOFD || n->nfile.type == NFROMFD)
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&& n->ndup.dupfd == fd)
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fd = redir->nfile.fd;
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if ((redir->nfile.type == NTOFD || redir->nfile.type == NFROMFD)
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&& redir->ndup.dupfd == fd)
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continue; /* redirect from/to same file descriptor */
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newfd = openredirect(n);
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newfd = openredirect(redir);
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if (fd == newfd) {
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/* Descriptor wasn't open before redirect.
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* Mark it for close in the future */
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@ -4953,8 +4951,8 @@ redirect(union node *redir, int flags)
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} else {
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close(fd);
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}
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dupredirect(n, newfd);
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} while ((n = n->nfile.next));
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dupredirect(redir, newfd);
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} while ((redir = redir->nfile.next) != NULL);
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INT_ON;
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if ((flags & REDIR_SAVEFD2) && sv && sv->renamed[2] >= 0)
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preverrout_fd = sv->renamed[2];
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@ -6572,7 +6570,7 @@ expmeta(char *enddir, char *name)
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if (*p == '.')
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matchdot++;
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while (!intpending && (dp = readdir(dirp)) != NULL) {
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if (dp->d_name[0] == '.' && ! matchdot)
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if (dp->d_name[0] == '.' && !matchdot)
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continue;
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if (pmatch(start, dp->d_name)) {
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if (atend) {
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@ -6587,7 +6585,7 @@ expmeta(char *enddir, char *name)
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}
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}
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closedir(dirp);
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if (! atend)
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if (!atend)
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endname[-1] = '/';
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}
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@ -7620,7 +7618,7 @@ copynode(union node *n)
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break;
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case NPIPE:
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new->npipe.cmdlist = copynodelist(n->npipe.cmdlist);
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new->npipe.backgnd = n->npipe.backgnd;
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new->npipe.pipe_backgnd = n->npipe.pipe_backgnd;
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break;
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case NREDIR:
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case NBACKGND:
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@ -8037,7 +8035,7 @@ evalsubshell(union node *n, int flags)
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/* never returns */
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}
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status = 0;
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if (! backgnd)
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if (!backgnd)
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status = waitforjob(jp);
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exitstatus = status;
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INT_ON;
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@ -8111,7 +8109,7 @@ evalpipe(union node *n, int flags)
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ash_msg_and_raise_error("pipe call failed");
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}
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}
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if (forkshell(jp, lp->n, n->npipe.backgnd) == 0) {
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if (forkshell(jp, lp->n, n->npipe.pipe_backgnd) == 0) {
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INT_ON;
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if (pip[1] >= 0) {
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close(pip[0]);
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@ -8132,7 +8130,7 @@ evalpipe(union node *n, int flags)
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prevfd = pip[0];
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close(pip[1]);
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}
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if (n->npipe.backgnd == 0) {
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if (n->npipe.pipe_backgnd == 0) {
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exitstatus = waitforjob(jp);
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TRACE(("evalpipe: job done exit status %d\n", exitstatus));
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}
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@ -9861,7 +9859,7 @@ list(int nlflag)
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tok = readtoken();
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if (tok == TBACKGND) {
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if (n2->type == NPIPE) {
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n2->npipe.backgnd = 1;
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n2->npipe.pipe_backgnd = 1;
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} else {
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if (n2->type != NREDIR) {
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n3 = stzalloc(sizeof(struct nredir));
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@ -9958,7 +9956,7 @@ pipeline(void)
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if (readtoken() == TPIPE) {
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pipenode = stzalloc(sizeof(struct npipe));
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pipenode->type = NPIPE;
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/*pipenode->npipe.backgnd = 0; - stzalloc did it */
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/*pipenode->npipe.pipe_backgnd = 0; - stzalloc did it */
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lp = stzalloc(sizeof(struct nodelist));
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pipenode->npipe.cmdlist = lp;
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lp->n = n1;
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@ -10227,7 +10225,7 @@ parse_command(void)
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break;
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}
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case TFOR:
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if (readtoken() != TWORD || quoteflag || ! goodname(wordtext))
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if (readtoken() != TWORD || quoteflag || !goodname(wordtext))
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raise_error_syntax("Bad for loop variable");
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n1 = stzalloc(sizeof(struct nfor));
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n1->type = NFOR;
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@ -12854,7 +12852,7 @@ arith_apply(operator op, v_n_t *numstack, v_n_t **numstackptr)
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--NUMPTR;
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numptr_val = rez;
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if (op == TOK_CONDITIONAL) {
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if (! numptr_m1->contidional_second_val_initialized) {
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if (!numptr_m1->contidional_second_val_initialized) {
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/* protect $((expr1 ? expr2)) without ": expr" */
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goto err;
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}
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@ -13106,7 +13104,7 @@ arith(const char *expr, int *perrcode)
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}
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for (o = expr; *p && *o == *p; p++)
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o++;
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if (! *p) {
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if (!*p) {
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/* found */
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expr = o - 1;
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break;
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