diff options
Diffstat (limited to 'Src/subst.c')
| -rw-r--r-- | Src/subst.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/Src/subst.c b/Src/subst.c index dac536f14..82645ccfa 100644 --- a/Src/subst.c +++ b/Src/subst.c @@ -2876,6 +2876,49 @@ paramsubst(LinkList l, LinkNode n, char **str, int qt, int pf_flags) } break; } + } else if (inbrace && (*s == '|' || *s == Bar || + *s == '*' || *s == Star)) { + int intersect = (*s == '*' || *s == Star); + char **compare = getaparam(++s), **ap, **apsrc; + if (compare) { + HashTable ht = newuniqtable(arrlen(compare)+1); + int present; + for (ap = compare; *ap; ap++) + (void)addhashnode2(ht, *ap, (HashNode) + zhalloc(sizeof(struct hashnode))); + if (!vunset && isarr) { + if (!copied) { + aval = arrdup(aval); + copied = 1; + } + for (ap = apsrc = aval; *apsrc; apsrc++) { + untokenize(*apsrc); + present = (gethashnode2(ht, *apsrc) != NULL); + if (intersect ? present : !present) { + if (ap != apsrc) { + *ap = *apsrc; + } + ap++; + } + } + *ap = NULL; + } else { + if (vunset) { + if (unset(UNSET)) { + *idend = '\0'; + zerr("%s: parameter not set", idbeg); + deletehashtable(ht); + return NULL; + } + val = dupstring(""); + } else { + present = (gethashnode2(ht, val) != NULL); + if (intersect ? !present : present) + val = dupstring(""); + } + } + deletehashtable(ht); + } } else { /* no ${...=...} or anything, but possible modifiers. */ /* * Handler ${+...}. TODO: strange, why do we handle this only |