/[LeafOK_CVS]/lbbs/src/article_cache.c
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Revision 1.27 by sysadm, Tue Oct 14 02:39:34 2025 UTC Revision 1.39 by sysadm, Thu Dec 18 02:56:00 2025 UTC
# Line 1  Line 1 
1  /***************************************************************************  /* SPDX-License-Identifier: GPL-3.0-or-later */
2                                             article_cache.c  -  description  /*
3                                                           -------------------   * article_cache
4          Copyright            : (C) 2004-2025 by Leaflet   *   - convert article content from DB to local cache with LML conversion and line offset index
5          Email                : leaflet@leafok.com   *
6   ***************************************************************************/   * Copyright (C) 2004-2025  Leaflet <leaflet@leafok.com>
7     */
8  /***************************************************************************  
9   *                                                                         *  #ifdef HAVE_CONFIG_H
10   *   This program is free software; you can redistribute it and/or modify  *  #include "config.h"
11   *   it under the terms of the GNU General Public License as published by  *  #endif
  *   the Free Software Foundation; either version 3 of the License, or     *  
  *   (at your option) any later version.                                   *  
  *                                                                         *  
  ***************************************************************************/  
12    
13  #include "article_cache.h"  #include "article_cache.h"
14  #include "lml.h"  #include "lml.h"
# Line 27  Line 23 
23  #include <sys/mman.h>  #include <sys/mman.h>
24  #include <sys/stat.h>  #include <sys/stat.h>
25    
26  #define ARTICLE_HEADER_MAX_LEN 4096  enum _article_cache_constant_t
27  #define ARTICLE_CONTENT_MAX_LEN 1024 * 1024 * 4 // 4MB  {
28  #define ARTICLE_FOOTER_MAX_LEN 4096          ARTICLE_HEADER_MAX_LEN = 4096,
29  #define SUB_DT_MAX_LEN 50          ARTICLE_FOOTER_MAX_LEN = 4096,
30            SUB_DT_MAX_LEN = 50,
31    };
32    
33  static const char *BBS_article_footer_color[] = {  static const char *BBS_article_footer_color[] = {
34          "\033[31m",          "\033[31m",
# Line 69  int article_cache_generate(const char *c Line 67  int article_cache_generate(const char *c
67          char header[ARTICLE_HEADER_MAX_LEN];          char header[ARTICLE_HEADER_MAX_LEN];
68          size_t header_len;          size_t header_len;
69          long header_line_cnt;          long header_line_cnt;
70            size_t body_len;
71            long body_line_cnt;
72          char footer[ARTICLE_FOOTER_MAX_LEN];          char footer[ARTICLE_FOOTER_MAX_LEN];
73          size_t footer_len;          size_t footer_len;
74          long footer_line_cnt;          long footer_line_cnt;
# Line 111  int article_cache_generate(const char *c Line 111  int article_cache_generate(const char *c
111    
112          // Generate article header / footer          // Generate article header / footer
113          localtime_r(&(p_article->sub_dt), &tm_sub_dt);          localtime_r(&(p_article->sub_dt), &tm_sub_dt);
114          strftime(str_sub_dt, sizeof(str_sub_dt), "%c", &tm_sub_dt);          strftime(str_sub_dt, sizeof(str_sub_dt), "%c %Z", &tm_sub_dt);
115    
116          snprintf(header, sizeof(header), "发布者: %s (%s), 版块: %s (%s)\n标  题: %s\n发布于: %s (%s)\n\n",          snprintf(header, sizeof(header), "发布者: %s (%s), 版块: %s (%s)\n标  题: %s\n发布于: %s (%s)\n\n",
117                           p_article->username, p_article->nickname, p_section->sname, p_section->stitle, p_article->title, BBS_name, str_sub_dt);                           p_article->username, p_article->nickname, p_section->sname, p_section->stitle, p_article->title, BBS_name, str_sub_dt);
118    
119          snprintf(footer, sizeof(footer),          snprintf(footer, sizeof(footer),
120                           "\n--\n%s※ 来源: %s http://%s [FROM: %s]\033[m\n\n",                           "\n--\n%s※ 来源: %s https://%s [FROM: %s]\033[m\n\n",
121                           BBS_article_footer_color[p_article->aid % BBS_article_footer_color_count],                           BBS_article_footer_color[p_article->aid % BBS_article_footer_color_count],
122                           BBS_name, BBS_server, sub_ip);                           BBS_name, BBS_server, sub_ip);
123    
124          header_len = strnlen(header, sizeof(header));          header_len = strnlen(header, sizeof(header));
125          footer_len = strnlen(footer, sizeof(footer));          footer_len = strnlen(footer, sizeof(footer));
126    
127          header_line_cnt = split_data_lines(header, SCREEN_COLS, cache.line_offsets, MAX_SPLIT_FILE_LINES, 1, NULL);          header_line_cnt = split_data_lines(header, SCREEN_COLS, cache.line_offsets,
128                                                                               MAX_SPLIT_FILE_LINES, 1, NULL);
129    
130          if (header_len != cache.line_offsets[header_line_cnt])          if (header_len != cache.line_offsets[header_line_cnt])
131          {          {
132  #ifdef _DEBUG                  log_debug("Header of article(aid=%d) is truncated from %ld to %ld\n, body_line=%ld, body_line_limit=%ld",
133                  log_error("Header of article(aid=%d) is truncated from %ld to %ld\n", p_article->aid, header_len, cache.line_offsets[header_line_cnt]);                                    p_article->aid, header_len, cache.line_offsets[header_line_cnt],
134  #endif                                    header_line_cnt, MAX_SPLIT_FILE_LINES);
135                  header_len = (size_t)cache.line_offsets[header_line_cnt];                  header_len = (size_t)cache.line_offsets[header_line_cnt];
136          }          }
137    
138          // Apply LML render to content body          // Apply LML render to content body
139          cache.data_len = header_len + (size_t)lml_render(content, content_f, ARTICLE_CONTENT_MAX_LEN, 1);          body_len = (size_t)lml_render(content, content_f, ARTICLE_CONTENT_MAX_LEN, SCREEN_COLS, 0);
140            cache.data_len = header_len + body_len;
141    
142          cache.line_total = header_line_cnt +          body_line_cnt = split_data_lines(content_f, SCREEN_COLS + 1, &(cache.line_offsets[header_line_cnt]),
143                                             split_data_lines(content_f, SCREEN_COLS, cache.line_offsets + header_line_cnt, MAX_SPLIT_FILE_LINES - header_line_cnt, 1, NULL);                                                                           MAX_SPLIT_FILE_LINES - header_line_cnt, 1, NULL);
144            cache.line_total = header_line_cnt + body_line_cnt;
145          if (cache.data_len - header_len != (size_t)cache.line_offsets[cache.line_total])  
146          {          if (body_len != (size_t)cache.line_offsets[cache.line_total])
147  #ifdef _DEBUG          {
148                  log_error("Body of article(aid=%d) is truncated from %ld to %ld\n",                  log_debug("Body of article(aid=%d) is truncated from %ld to %ld, body_line=%ld, body_line_limit=%ld\n",
149                                    p_article->aid, cache.data_len - header_len, cache.line_offsets[cache.line_total]);                                    p_article->aid, body_len, cache.line_offsets[cache.line_total],
150  #endif                                    body_line_cnt, MAX_SPLIT_FILE_LINES - header_line_cnt);
151                  cache.data_len = header_len + (size_t)(cache.line_offsets[cache.line_total]);                  cache.data_len = header_len + (size_t)(cache.line_offsets[cache.line_total]);
152          }          }
153    
# Line 154  int article_cache_generate(const char *c Line 156  int article_cache_generate(const char *c
156                  cache.line_offsets[i] += (long)header_len;                  cache.line_offsets[i] += (long)header_len;
157          }          }
158    
159          footer_line_cnt = split_data_lines(footer, SCREEN_COLS, cache.line_offsets + cache.line_total, MAX_SPLIT_FILE_LINES - cache.line_total, 1, NULL);          footer_line_cnt = split_data_lines(footer, SCREEN_COLS, &(cache.line_offsets[cache.line_total]),
160                                                                               MAX_SPLIT_FILE_LINES - cache.line_total, 1, NULL);
161    
162          if (footer_len != cache.line_offsets[cache.line_total + footer_line_cnt])          if (footer_len != cache.line_offsets[cache.line_total + footer_line_cnt])
163          {          {
164  #ifdef _DEBUG                  log_debug("Footer of article(aid=%d) is truncated from %ld to %ld, footer_line=%ld, footer_line_limit=%ld\n",
165                  log_error("Footer of article(aid=%d) is truncated from %ld to %ld\n",                                    p_article->aid, footer_len, cache.line_offsets[cache.line_total + footer_line_cnt],
166                                    p_article->aid, footer_len, cache.line_offsets[cache.line_total + footer_line_cnt]);                                    footer_line_cnt, MAX_SPLIT_FILE_LINES - cache.line_total);
 #endif  
167                  footer_len = (size_t)(cache.line_offsets[cache.line_total + footer_line_cnt]);                  footer_len = (size_t)(cache.line_offsets[cache.line_total + footer_line_cnt]);
168          }          }
169    
# Line 274  int article_cache_load(ARTICLE_CACHE *p_ Line 276  int article_cache_load(ARTICLE_CACHE *p_
276          memcpy((void *)p_cache, p_mmap, (size_t)(((ARTICLE_CACHE *)p_mmap)->mmap_len - ((ARTICLE_CACHE *)p_mmap)->data_len));          memcpy((void *)p_cache, p_mmap, (size_t)(((ARTICLE_CACHE *)p_mmap)->mmap_len - ((ARTICLE_CACHE *)p_mmap)->data_len));
277    
278          p_cache->p_mmap = p_mmap;          p_cache->p_mmap = p_mmap;
279          p_cache->p_data = p_mmap + (p_cache->mmap_len - p_cache->data_len);          p_cache->p_data = (char *)p_mmap + (p_cache->mmap_len - p_cache->data_len);
280    
281          return 0;          return 0;
282  }  }

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