21e8dbfd9
Alin Mr
2021-10-09
Subject
ash.c: speedup ${s:} substring (no quotes)
Binary
No binary (build failed)
Architecture & Compiler Flags
—
Build Log
(log yok)
Commit Diff GitHub →
shell/ash.c+11 -6
| @@ -7185,14 +7185,19 @@ subevalvar(char *start, char *str, int strloc, | |
| if ((unsigned)len > (orig_len - pos)) | |
| len = orig_len - pos; | |
| - | for (vstr = startp; pos; vstr++, pos--) { |
| - | if (quotes && (unsigned char)*vstr == CTLESC) |
| + | if (!quotes) { |
| + | loc = mempcpy(startp, startp + pos, len); |
| + | } else { |
| + | for (vstr = startp; pos != 0; pos--) { |
| + | if ((unsigned char)*vstr == CTLESC) |
| + | vstr++; |
| vstr++; | |
| - | } |
| - | for (loc = startp; len; len--) { |
| - | if (quotes && (unsigned char)*vstr == CTLESC) |
| + | } |
| + | for (loc = startp; len != 0; len--) { |
| + | if ((unsigned char)*vstr == CTLESC) |
| + | *loc++ = *vstr++; |
| *loc++ = *vstr++; | |
| - | *loc++ = *vstr++; |
| + | } |
| } | |
| *loc = '\0'; | |
| goto out; | |