67 lines
1.1 KiB
C
67 lines
1.1 KiB
C
#include <u.h>
|
|
#include <libc.h>
|
|
#include <regexp.h>
|
|
|
|
void
|
|
rregsub(Rune *src, Rune *dst, int dlen, Resub *match, int msize)
|
|
{
|
|
int i;
|
|
Rune *ep, r;
|
|
|
|
ep = dst + dlen-1;
|
|
for(;*src != L'\0'; src++) switch(*src) {
|
|
case L'\\':
|
|
switch(*++src) {
|
|
case L'0':
|
|
case L'1':
|
|
case L'2':
|
|
case L'3':
|
|
case L'4':
|
|
case L'5':
|
|
case L'6':
|
|
case L'7':
|
|
case L'8':
|
|
case L'9':
|
|
i = *src - L'0';
|
|
if(match != nil && i < msize && match[i].rsp != nil) {
|
|
r = *match[i].rep;
|
|
*match[i].rep = L'\0';
|
|
dst = runestrecpy(dst, ep+1, match[i].rsp);
|
|
*match[i].rep = r;
|
|
}
|
|
break;
|
|
case L'\\':
|
|
if(dst < ep)
|
|
*dst++ = L'\\';
|
|
else
|
|
goto End;
|
|
break;
|
|
case L'\0':
|
|
goto End;
|
|
default:
|
|
if(dst < ep)
|
|
*dst++ = *src;
|
|
else
|
|
goto End;
|
|
break;
|
|
}
|
|
break;
|
|
case L'&':
|
|
if(match != nil && msize > 0 && match[0].rsp != nil) {
|
|
r = *match[0].rep;
|
|
*match[0].rep = L'\0';
|
|
dst = runestrecpy(dst, ep+1, match[0].rsp);
|
|
*match[0].rep = r;
|
|
}
|
|
break;
|
|
default:
|
|
if(dst < ep)
|
|
*dst++ = *src;
|
|
else
|
|
goto End;
|
|
break;
|
|
}
|
|
End:
|
|
*dst = L'\0';
|
|
}
|