subr.c - 9base - revived minimalist port of Plan 9 userland to Unix
 (HTM) git clone git://git.suckless.org/9base
 (DIR) Log
 (DIR) Files
 (DIR) Refs
 (DIR) README
 (DIR) LICENSE
       ---
       subr.c (1224B)
       ---
            1 #include "rc.h"
            2 #include "exec.h"
            3 #include "io.h"
            4 #include "fns.h"
            5 
            6 char*
            7 emalloc(long n)
            8 {
            9         char *p = (char *)Malloc(n);
           10         if(p==0)
           11                 panic("Can't malloc %d bytes", n);
           12 /*        if(err){ pfmt(err, "malloc %d->%p\n", n, p); flush(err); } /**/
           13         memset(p, 0, n);
           14         return p;
           15 }
           16 
           17 void
           18 efree(char *p)
           19 {
           20 /*        pfmt(err, "free %p\n", p); flush(err); /**/
           21         if(p)
           22                 free(p);
           23         else pfmt(err, "free 0\n");
           24 }
           25 extern int lastword, lastdol;
           26 
           27 void
           28 yyerror(char *m)
           29 {
           30         pfmt(err, "rc: ");
           31         if(runq->cmdfile && !runq->iflag)
           32                 pfmt(err, "%s:%d: ", runq->cmdfile, runq->lineno);
           33         else if(runq->cmdfile)
           34                 pfmt(err, "%s: ", runq->cmdfile);
           35         else if(!runq->iflag)
           36                 pfmt(err, "line %d: ", runq->lineno);
           37         if(tok[0] && tok[0]!='\n')
           38                 pfmt(err, "token %q: ", tok);
           39         pfmt(err, "%s\n", m);
           40         flush(err);
           41         lastword = 0;
           42         lastdol = 0;
           43         while(lastc!='\n' && lastc!=EOF) advance();
           44         nerror++;
           45         setvar("status", newword(m, (word *)0));
           46 }
           47 char *bp;
           48 
           49 static void
           50 iacvt(int n)
           51 {
           52         if(n<0){
           53                 *bp++='-';
           54                 n=-n;        /* doesn't work for n==-inf */
           55         }
           56         if(n/10)
           57                 iacvt(n/10);
           58         *bp++=n%10+'0';
           59 }
           60 
           61 void
           62 inttoascii(char *s, long n)
           63 {
           64         bp = s;
           65         iacvt(n);
           66         *bp='\0';
           67 }
           68 
           69 void
           70 panic(char *s, int n)
           71 {
           72         pfmt(err, "rc: ");
           73         pfmt(err, s, n);
           74         pchr(err, '\n');
           75         flush(err);
           76         Abort();
           77 }