210 lines
4.4 KiB
C++
210 lines
4.4 KiB
C++
/* SPDX-FileCopyrightText: 2008 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup bke
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*/
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#include <cctype>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include "MEM_guardedalloc.h"
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#include "BLI_string.h"
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#include "BKE_text_suggestions.h" /* Own include. */
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#include "DNA_text_types.h"
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/**********************/
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/* Static definitions */
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/**********************/
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static Text *activeToolText = nullptr;
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static SuggList suggestions = {nullptr, nullptr, nullptr, nullptr, nullptr};
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static char *documentation = nullptr;
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// static int doc_lines = 0;
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static void txttl_free_suggest()
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{
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SuggItem *item, *prev;
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for (item = suggestions.last; item; item = prev) {
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prev = item->prev;
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MEM_freeN(item);
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}
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suggestions.first = suggestions.last = nullptr;
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suggestions.firstmatch = suggestions.lastmatch = nullptr;
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suggestions.selected = nullptr;
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suggestions.top = 0;
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}
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static void txttl_free_docs()
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{
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MEM_SAFE_FREE(documentation);
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}
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/**************************/
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/* General tool functions */
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/**************************/
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void free_texttools()
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{
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txttl_free_suggest();
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txttl_free_docs();
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}
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void texttool_text_set_active(Text *text)
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{
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if (activeToolText == text) {
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return;
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}
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texttool_text_clear();
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activeToolText = text;
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}
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void texttool_text_clear()
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{
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free_texttools();
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activeToolText = nullptr;
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}
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short texttool_text_is_active(Text *text)
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{
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return activeToolText == text ? 1 : 0;
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}
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/***************************/
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/* Suggestion list methods */
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/***************************/
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void texttool_suggest_add(const char *name, char type)
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{
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const int len = strlen(name);
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int cmp;
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SuggItem *newitem, *item;
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newitem = static_cast<SuggItem *>(MEM_mallocN(sizeof(SuggItem) + len + 1, "SuggItem"));
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if (!newitem) {
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printf("Failed to allocate memory for suggestion.\n");
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return;
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}
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memcpy(newitem->name, name, len + 1);
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newitem->type = type;
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newitem->prev = newitem->next = nullptr;
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/* Perform simple linear search for ordered storage */
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if (!suggestions.first || !suggestions.last) {
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suggestions.first = suggestions.last = newitem;
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}
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else {
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cmp = -1;
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for (item = suggestions.last; item; item = item->prev) {
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cmp = BLI_strncasecmp(name, item->name, len);
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/* Newitem comes after this item, insert here */
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if (cmp >= 0) {
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newitem->prev = item;
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if (item->next) {
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item->next->prev = newitem;
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}
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newitem->next = item->next;
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item->next = newitem;
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/* At last item, set last pointer here */
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if (item == suggestions.last) {
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suggestions.last = newitem;
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}
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break;
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}
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}
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/* Reached beginning of list, insert before first */
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if (cmp < 0) {
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newitem->next = suggestions.first;
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suggestions.first->prev = newitem;
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suggestions.first = newitem;
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}
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}
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suggestions.firstmatch = suggestions.lastmatch = suggestions.selected = nullptr;
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suggestions.top = 0;
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}
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void texttool_suggest_prefix(const char *prefix, const int prefix_len)
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{
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SuggItem *match, *first, *last;
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int cmp, top = 0;
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if (!suggestions.first) {
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return;
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}
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if (prefix_len == 0) {
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suggestions.selected = suggestions.firstmatch = suggestions.first;
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suggestions.lastmatch = suggestions.last;
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return;
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}
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first = last = nullptr;
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for (match = suggestions.first; match; match = match->next) {
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cmp = BLI_strncasecmp(prefix, match->name, prefix_len);
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if (cmp == 0) {
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if (!first) {
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first = match;
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suggestions.top = top;
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}
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}
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else if (cmp < 0) {
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if (!last) {
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last = match->prev;
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break;
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}
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}
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top++;
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}
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if (first) {
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if (!last) {
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last = suggestions.last;
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}
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suggestions.firstmatch = first;
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suggestions.lastmatch = last;
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suggestions.selected = first;
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}
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else {
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suggestions.firstmatch = nullptr;
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suggestions.lastmatch = nullptr;
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suggestions.selected = nullptr;
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suggestions.top = 0;
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}
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}
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void texttool_suggest_clear()
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{
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txttl_free_suggest();
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}
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SuggItem *texttool_suggest_first()
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{
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return suggestions.firstmatch;
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}
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SuggItem *texttool_suggest_last()
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{
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return suggestions.lastmatch;
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}
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void texttool_suggest_select(SuggItem *sel)
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{
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suggestions.selected = sel;
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}
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SuggItem *texttool_suggest_selected()
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{
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return suggestions.selected;
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}
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int *texttool_suggest_top()
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{
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return &suggestions.top;
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}
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