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/***************************************************************************
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section_list.h - description
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-------------------
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Copyright : (C) 2004-2025 by Leaflet
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Email : leaflet@leafok.com
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include "common.h"
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#include "bbs.h"
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#define BBS_article_title_max_len 80
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#define BBS_article_limit_per_section 50000
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#define BBS_article_limit_per_page 20
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#define ARTICLE_PER_BLOCK 1000
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struct article_t
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{
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int32_t aid;
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int32_t tid;
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int32_t cid;
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int32_t uid;
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struct article_t *p_prior; // prior article
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struct article_t *p_next; // next article
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struct article_t *p_topic_prior; // same topic
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struct article_t *p_topic_next; // same topic
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int8_t visible;
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int8_t excerption;
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int8_t ontop;
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int8_t lock;
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char username[BBS_username_max_len + 1];
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char nickname[BBS_nickname_max_len + 1];
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char title[BBS_article_title_max_len + 1];
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};
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typedef struct article_t ARTICLE;
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struct section_list_t
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{
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int32_t sid;
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char sname[BBS_section_name_max_len + 1];
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char stitle[BBS_section_title_max_len + 1];
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char master_name[BBS_username_max_len + 1];
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int32_t article_count;
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ARTICLE *p_article_head;
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ARTICLE *p_article_tail;
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ARTICLE *p_page_first_article[BBS_article_limit_per_section / BBS_article_limit_per_page];
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int32_t page_count;
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int32_t last_page_article_count;
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};
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typedef struct section_list_t SECTION_LIST;
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// article_block_count * ARTICLE_PER_BLOCK should be
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// no less than BBS_article_limit_per_section * BBS_max_section,
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// in order to allocate enough memory for blocks
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extern int article_block_init(const char *filename, int block_count);
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extern void article_block_cleanup(void);
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extern int article_block_reset(void);
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extern ARTICLE *article_block_find_by_aid(int32_t aid);
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extern ARTICLE *article_block_find_by_index(int index);
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extern SECTION_LIST *section_list_create(const char *sname, const char *stitle, const char *master_name);
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extern void section_list_reset_articles(SECTION_LIST *p_section);
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extern void section_list_cleanup(void);
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extern SECTION_LIST *section_list_find_by_name(const char *sname);
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extern int section_list_append_article(SECTION_LIST *p_section, const ARTICLE *p_article_src);
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extern int section_list_set_article_visible(SECTION_LIST *p_section, int32_t aid, int8_t visible);
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