jehanne/sys/src/cmd/rc/subr.c

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/*
* This file is part of the UCB release of Plan 9. It is subject to the license
* terms in the LICENSE file found in the top-level directory of this
* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
* part of the UCB release of Plan 9, including this file, may be copied,
* modified, propagated, or distributed except according to the terms contained
* in the LICENSE file.
*/
#include "rc.h"
#include "exec.h"
#include "io.h"
#include "fns.h"
void *
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emalloc(int n)
{
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void *p = malloc(n);
if(p==0)
panic("Can't malloc %d bytes", n);
return p;
}
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void*
erealloc(void *p, int n)
{
p = realloc(p, n);
if(p==0 && n!=0)
panic("Can't realloc %d bytes\n", n);
return p;
}
char*
estrdup(char *s)
{
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char *d;
int n;
n = strlen(s)+1;
d = emalloc(n);
memmove(d, s, n);
return d;
}
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extern int lastword, lastdol;
void
yyerror(char *m)
{
pfmt(err, "rc: ");
if(runq->cmdfile && !runq->iflag)
pfmt(err, "%s:%d: ", runq->cmdfile, runq->lineno);
else if(runq->cmdfile)
pfmt(err, "%s: ", runq->cmdfile);
else if(!runq->iflag)
pfmt(err, "line %d: ", runq->lineno);
if(tok[0] && tok[0]!='\n')
pfmt(err, "token %q: ", tok);
pfmt(err, "%s\n", m);
flush(err);
lastword = 0;
lastdol = 0;
while(lastc!='\n' && lastc!=EOF) advance();
nerror++;
setvar(ENV_STATUS, newword(m, (word *)0));
}
char *bp;
static void
iacvt(int n)
{
if(n<0){
*bp++='-';
n=-n; /* doesn't work for n==-inf */
}
if(n/10)
iacvt(n/10);
*bp++=n%10+'0';
}
void
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inttoascii(char *s, int n)
{
bp = s;
iacvt(n);
*bp='\0';
}
void
panic(char *s, int n)
{
pfmt(err, "rc: ");
pfmt(err, s, n);
pchr(err, '\n');
flush(err);
Abort();
}