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#include <u.h>
#include <libc.h>
/*
* I don't want too many of these,
* but the ones we have are just too useful.
*/
static struct {
char *old;
char *new;
} replace[] = {
"#9", nil, /* must be first */
"#d", "/dev/fd",
};
char*
plan9translate(char *old)
{
char *new;
int i, olen, nlen, len;
if(replace[0].new == nil){
replace[0].new = getenv("PLAN9");
if(replace[0].new == nil)
replace[0].new = "/usr/local/plan9";
}
for(i=0; i<nelem(replace); i++){
if(!replace[i].new)
continue;
olen = strlen(replace[i].old);
if(strncmp(old, replace[i].old, olen) != 0
|| (old[olen] != '\0' && old[olen] != '/'))
continue;
nlen = strlen(replace[i].new);
len = strlen(old)+nlen-olen;
new = malloc(len+1);
if(new == nil)
return "<out of memory>";
strcpy(new, replace[i].new);
strcpy(new+nlen, old+olen);
assert(strlen(new) == len);
return new;
}
return old;
}
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