static int node_expand (struct wordsplit *wsp, struct wordsplit_node *node, int (*beg_p) (int), int (*ws_exp_fn) (struct wordsplit *wsp, const char *str, size_t len, struct wordsplit_node **ptail, const char **pend, int flg)) { const char *str = wsnode_ptr (wsp, node); size_t slen = wsnode_len (node); const char *end = str + slen; const char *p; size_t off = 0; struct wordsplit_node *tail = node; for (p = str; p < end; p++) { if (*p == '\\') { p++; continue; } if (*p == '$' && beg_p (p[1])) { size_t n = p - str; if (tail != node) tail->flags |= _WSNF_JOIN; if (node_split_prefix (wsp, &tail, node, off, n, _WSNF_JOIN)) return 1; p++; if (ws_exp_fn (wsp, p, slen - n, &tail, &p, node->flags & (_WSNF_JOIN | _WSNF_QUOTE))) return 1; off += p - str + 1; str = p + 1; } } if (p > str) { if (tail != node) tail->flags |= _WSNF_JOIN; if (node_split_prefix (wsp, &tail, node, off, p - str, node->flags & (_WSNF_JOIN|_WSNF_QUOTE))) return 1; } if (tail != node) { wsnode_remove (wsp, node); wsnode_free (node); } return 0; }
static int node_expand_vars (struct wordsplit *wsp, struct wordsplit_node *node) { const char *str = wsnode_ptr (wsp, node); size_t slen = wsnode_len (node); const char *end = str + slen; const char *p; size_t off = 0; struct wordsplit_node *tail = node; for (p = str; p < end; p++) { if (*p == '\\') { p++; continue; } if (*p == '$') { size_t n = p - str; if (tail != node) tail->flags |= _WSNF_JOIN; if (node_split_prefix (wsp, &tail, node, off, n, _WSNF_JOIN)) return 1; p++; if (expvar (wsp, p, slen - n, &tail, &p, node->flags & (_WSNF_JOIN | _WSNF_QUOTE))) return 1; off += p - str + 1; str = p + 1; } } if (p > str) { if (tail != node) tail->flags |= _WSNF_JOIN; if (node_split_prefix (wsp, &tail, node, off, p - str, node->flags & _WSNF_JOIN)) return 1; } if (tail != node) { wsnode_remove (wsp, node); wsnode_free (node); } return 0; }