diff options
author | June McEnroe <june@causal.agency> | 2018-08-07 14:58:32 -0400 |
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committer | June McEnroe <june@causal.agency> | 2018-08-07 14:58:32 -0400 |
commit | 5d2b5cd51e64c3e49a536ef431c97dc1d0b78dfd (patch) | |
tree | 90f841d064bc3bd88fe52e1fc3d79861b007df04 /tab.c | |
parent | Fix /me formatting side-effects (diff) | |
download | test-5d2b5cd51e64c3e49a536ef431c97dc1d0b78dfd.tar.gz test-5d2b5cd51e64c3e49a536ef431c97dc1d0b78dfd.zip |
Populate tab-complete list
Diffstat (limited to 'tab.c')
-rw-r--r-- | tab.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/tab.c b/tab.c new file mode 100644 index 0000000..56fe649 --- /dev/null +++ b/tab.c @@ -0,0 +1,72 @@ +/* Copyright (C) 2018 Curtis McEnroe <june@causal.agency> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <err.h> +#include <stdlib.h> +#include <string.h> +#include <sysexits.h> + +#include "chat.h" + +static struct Entry { + char *word; + struct Entry *prev; + struct Entry *next; +} *head; + +static void prepend(struct Entry *entry) { + entry->prev = NULL; + entry->next = head; + if (head) head->prev = entry; + head = entry; +} + +static void remove(struct Entry *entry) { + if (entry->prev) entry->prev->next = entry->next; + if (entry->next) entry->next->prev = entry->prev; + if (head == entry) head = entry->next; +} + +void tabTouch(const char *word) { + for (struct Entry *entry = head; entry; entry = entry->next) { + if (strcmp(entry->word, word)) continue; + if (head == entry) return; + remove(entry); + prepend(entry); + return; + } + + struct Entry *entry = malloc(sizeof(*entry)); + if (!entry) err(EX_OSERR, "malloc"); + entry->word = strdup(word); + prepend(entry); +} + +void tabRemove(const char *word) { + for (struct Entry *entry = head; entry; entry = entry->next) { + if (strcmp(entry->word, word)) continue; + remove(entry); + free(entry->word); + free(entry); + return; + } +} + +void tabReplace(const char *prev, const char *next) { + tabTouch(prev); + free(head->word); + head->word = strdup(next); +} |