From eb8dd9dca1228af0cd132f515509051ecfabf6f6 Mon Sep 17 00:00:00 2001 From: cvs2svn Date: Mon, 14 Apr 2025 17:32:06 +0000 Subject: This commit was manufactured by cvs2git to create tag 'tb_20250414'. --- src/lib/libc/stdlib/tsearch.c | 118 ------------------------------------------ 1 file changed, 118 deletions(-) delete mode 100644 src/lib/libc/stdlib/tsearch.c (limited to 'src/lib/libc/stdlib/tsearch.c') diff --git a/src/lib/libc/stdlib/tsearch.c b/src/lib/libc/stdlib/tsearch.c deleted file mode 100644 index 1dd31454eb..0000000000 --- a/src/lib/libc/stdlib/tsearch.c +++ /dev/null @@ -1,118 +0,0 @@ -/* $OpenBSD: tsearch.c,v 1.10 2015/09/26 16:03:48 guenther Exp $ */ - -/* - * Tree search generalized from Knuth (6.2.2) Algorithm T just like - * the AT&T man page says. - * - * The node_t structure is for internal use only - * - * Written by reading the System V Interface Definition, not the code. - * - * Totally public domain. - */ - -#include -#include - -typedef struct node_t { - char *key; - struct node_t *left, *right; -} node; - -/* find or insert datum into search tree */ -void * -tsearch(const void *vkey, void **vrootp, - int (*compar)(const void *, const void *)) -{ - node *q; - char *key = (char *)vkey; - node **rootp = (node **)vrootp; - - if (rootp == (struct node_t **)0) - return ((void *)0); - while (*rootp != (struct node_t *)0) { /* Knuth's T1: */ - int r; - - if ((r = (*compar)(key, (*rootp)->key)) == 0) /* T2: */ - return ((void *)*rootp); /* we found it! */ - rootp = (r < 0) ? - &(*rootp)->left : /* T3: follow left branch */ - &(*rootp)->right; /* T4: follow right branch */ - } - q = malloc(sizeof(node)); /* T5: key not found */ - if (q != (struct node_t *)0) { /* make new node */ - *rootp = q; /* link new node to old */ - q->key = key; /* initialize new node */ - q->left = q->right = (struct node_t *)0; - } - return ((void *)q); -} - -/* delete node with given key */ -void * -tdelete(const void *vkey, void **vrootp, - int (*compar)(const void *, const void *)) -{ - node **rootp = (node **)vrootp; - char *key = (char *)vkey; - node *p = (node *)1; - node *q; - node *r; - int cmp; - - if (rootp == (struct node_t **)0 || *rootp == (struct node_t *)0) - return ((struct node_t *)0); - while ((cmp = (*compar)(key, (*rootp)->key)) != 0) { - p = *rootp; - rootp = (cmp < 0) ? - &(*rootp)->left : /* follow left branch */ - &(*rootp)->right; /* follow right branch */ - if (*rootp == (struct node_t *)0) - return ((void *)0); /* key not found */ - } - r = (*rootp)->right; /* D1: */ - if ((q = (*rootp)->left) == (struct node_t *)0) /* Left (struct node_t *)0? */ - q = r; - else if (r != (struct node_t *)0) { /* Right link is null? */ - if (r->left == (struct node_t *)0) { /* D2: Find successor */ - r->left = q; - q = r; - } else { /* D3: Find (struct node_t *)0 link */ - for (q = r->left; q->left != (struct node_t *)0; q = r->left) - r = q; - r->left = q->right; - q->left = (*rootp)->left; - q->right = (*rootp)->right; - } - } - free((struct node_t *) *rootp); /* D4: Free node */ - *rootp = q; /* link parent to new node */ - return(p); -} - -/* Walk the nodes of a tree */ -static void -trecurse(node *root, void (*action)(const void *, VISIT, int), int level) -{ - if (root->left == (struct node_t *)0 && root->right == (struct node_t *)0) - (*action)(root, leaf, level); - else { - (*action)(root, preorder, level); - if (root->left != (struct node_t *)0) - trecurse(root->left, action, level + 1); - (*action)(root, postorder, level); - if (root->right != (struct node_t *)0) - trecurse(root->right, action, level + 1); - (*action)(root, endorder, level); - } -} - -/* Walk the nodes of a tree */ -void -twalk(const void *vroot, void (*action)(const void *, VISIT, int)) -{ - node *root = (node *)vroot; - - if (root != (node *)0 && action != (void (*)(const void *, VISIT, int))0) - trecurse(root, action, 0); -} -- cgit v1.2.3-55-g6feb