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#include <string.h> |
#include <string.h> |
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#define ARTICLE_HEADER_MAX_LEN 4096 |
#define ARTICLE_HEADER_MAX_LEN 4096 |
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#define ARTICLE_FOOTER_MAX_LEN 4096 |
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#define SUB_DT_MAX_LEN 50 |
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inline static int article_cache_path(char *file_path, size_t buf_len, const char *cache_dir, const ARTICLE *p_article) |
inline static int article_cache_path(char *file_path, size_t buf_len, const char *cache_dir, const ARTICLE *p_article) |
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{ |
{ |
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return 0; |
return 0; |
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} |
} |
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int article_cache_generate(const char *cache_dir, const ARTICLE *p_article, const char *content, int overwrite) |
int article_cache_generate(const char *cache_dir, const ARTICLE *p_article, const SECTION_LIST *p_section, |
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const char *content, const char *sub_ip, int overwrite) |
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{ |
{ |
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char data_file[FILE_PATH_LEN]; |
char data_file[FILE_PATH_LEN]; |
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int fd; |
int fd; |
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ARTICLE_CACHE cache; |
ARTICLE_CACHE cache; |
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size_t buf_size; |
struct tm tm_sub_dt; |
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char str_sub_dt[SUB_DT_MAX_LEN + 1]; |
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char header[ARTICLE_HEADER_MAX_LEN]; |
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size_t header_len; |
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long header_line_cnt; |
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char footer[ARTICLE_FOOTER_MAX_LEN]; |
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size_t footer_len; |
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long footer_line_cnt; |
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long i; |
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if (cache_dir == NULL || p_article == NULL || content == NULL) |
if (cache_dir == NULL || p_article == NULL || content == NULL) |
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{ |
{ |
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} |
} |
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} |
} |
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buf_size = ARTICLE_HEADER_MAX_LEN + strlen(content) + 1; |
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cache.p_data = malloc(buf_size); |
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if (cache.p_data == NULL) |
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{ |
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log_error("malloc(size=%ld) error OOM\n", buf_size); |
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return -1; |
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} |
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if ((fd = open(data_file, O_WRONLY | O_CREAT | O_TRUNC, 0640)) == -1) |
if ((fd = open(data_file, O_WRONLY | O_CREAT | O_TRUNC, 0640)) == -1) |
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{ |
{ |
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log_error("open(%s) error (%d)\n", data_file, errno); |
log_error("open(%s) error (%d)\n", data_file, errno); |
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return -2; |
return -2; |
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} |
} |
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// TODO: Generate article header |
bzero(&cache, sizeof(cache)); |
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cache.data_len = (size_t)snprintf(cache.p_data, |
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ARTICLE_HEADER_MAX_LEN + strlen(content) + 1, |
// Generate article header / footer |
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"%s", |
localtime_r(&(p_article->sub_dt), &tm_sub_dt); |
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content); |
strftime(str_sub_dt, sizeof(str_sub_dt), "%c", &tm_sub_dt); |
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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", |
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p_article->username, p_article->nickname, p_section->sname, p_section->stitle, p_article->title, BBS_name, str_sub_dt); |
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snprintf(footer, sizeof(footer), |
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"--\n※ 来源: %s http://%s [FROM: %s]\n", |
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BBS_name, BBS_server, sub_ip); |
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bzero(cache.line_offsets, sizeof(cache.line_offsets)); |
header_len = strnlen(header, sizeof(header)); |
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cache.line_total = split_data_lines(cache.p_data, SCREEN_COLS, cache.line_offsets, MAX_SPLIT_FILE_LINES); |
footer_len = strnlen(footer, sizeof(footer)); |
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cache.data_len = header_len + strlen(content); |
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header_line_cnt = split_data_lines(header, SCREEN_COLS, cache.line_offsets, MAX_SPLIT_FILE_LINES); |
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cache.line_total = header_line_cnt + |
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split_data_lines(content, SCREEN_COLS, cache.line_offsets + header_line_cnt, MAX_SPLIT_FILE_LINES - header_line_cnt); |
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if (cache.line_total >= MAX_SPLIT_FILE_LINES) |
if (cache.line_total >= MAX_SPLIT_FILE_LINES) |
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{ |
{ |
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log_error("split_data_lines(%s) truncated over limit lines\n", data_file); |
log_error("split_data_lines(%s) truncated over limit lines %d >= %d\n", data_file, cache.line_total, MAX_SPLIT_FILE_LINES); |
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return -3; |
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} |
} |
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for (i = header_line_cnt; i <= cache.line_total; i++) |
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{ |
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cache.line_offsets[i] += (long)header_len; |
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} |
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footer_line_cnt = split_data_lines(footer, SCREEN_COLS, cache.line_offsets + cache.line_total, MAX_SPLIT_FILE_LINES - cache.line_total); |
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if (cache.line_total + footer_line_cnt >= MAX_SPLIT_FILE_LINES) |
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{ |
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log_error("split_data_lines(%s) truncated over limit lines %d >= %d\n", data_file, cache.line_total + footer_line_cnt, MAX_SPLIT_FILE_LINES); |
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return -3; |
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} |
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for (i = 0; i <= footer_line_cnt; i++) |
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{ |
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cache.line_offsets[cache.line_total + i] += (long)cache.data_len; |
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} |
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cache.data_len += footer_len; |
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cache.line_total += footer_line_cnt; |
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if (write(fd, &cache, sizeof(cache)) == -1) |
if (write(fd, &cache, sizeof(cache)) == -1) |
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{ |
{ |
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log_error("write(%s, cache) error (%d)\n", data_file, errno); |
log_error("write(%s, cache) error (%d)\n", data_file, errno); |
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close(fd); |
close(fd); |
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return -3; |
return -3; |
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} |
} |
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if (write(fd, cache.p_data, cache.data_len) == -1) |
if (write(fd, header, header_len) == -1) |
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{ |
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log_error("write(%s, header) error (%d)\n", data_file, errno); |
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close(fd); |
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return -3; |
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} |
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if (write(fd, content, cache.data_len - header_len - footer_len) == -1) |
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{ |
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log_error("write(%s, content) error (%d)\n", data_file, errno); |
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close(fd); |
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return -3; |
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} |
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if (write(fd, footer, footer_len) == -1) |
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{ |
{ |
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log_error("write(%s, data) error (%d)\n", data_file, errno); |
log_error("write(%s, footer) error (%d)\n", data_file, errno); |
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close(fd); |
close(fd); |
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return -3; |
return -3; |
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} |
} |
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return -2; |
return -2; |
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} |
} |
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free(cache.p_data); |
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return 0; |
return 0; |
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} |
} |
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{ |
{ |
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char data_file[FILE_PATH_LEN]; |
char data_file[FILE_PATH_LEN]; |
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int fd; |
int fd; |
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struct stat sb; |
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void *p_mmap; |
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size_t mmap_len; |
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if (p_cache == NULL || cache_dir == NULL || p_article == NULL) |
if (p_cache == NULL || cache_dir == NULL || p_article == NULL) |
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{ |
{ |
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return -2; |
return -2; |
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} |
} |
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if (read(fd, (void *)p_cache, sizeof(ARTICLE_CACHE)) == -1) |
if (fstat(fd, &sb) < 0) |
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{ |
{ |
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log_error("read(%s, cache) error (%d)\n", data_file, errno); |
log_error("fstat(fd) error (%d)\n", errno); |
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close(fd); |
return -2; |
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return -3; |
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} |
} |
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p_cache->p_data = malloc(p_cache->data_len + 1); |
mmap_len = (size_t)sb.st_size; |
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if (p_cache->p_data == NULL) |
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{ |
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log_error("malloc(size=%ld) error OOM\n", p_cache->data_len + 1); |
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close(fd); |
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return -1; |
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} |
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if (read(fd, p_cache->p_data, p_cache->data_len) == -1) |
p_mmap = mmap(NULL, mmap_len, PROT_READ, MAP_SHARED, fd, 0L); |
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if (p_mmap == MAP_FAILED) |
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{ |
{ |
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log_error("read(%s, data) error (%d)\n", data_file, errno); |
log_error("mmap(%s) error (%d)\n", data_file, errno); |
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close(fd); |
return -2; |
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return -3; |
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} |
} |
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p_cache->p_data[p_cache->data_len] = '\0'; |
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if (close(fd) == -1) |
if (close(fd) == -1) |
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{ |
{ |
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return -2; |
return -2; |
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} |
} |
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memcpy((void *)p_cache, p_mmap, sizeof(ARTICLE_CACHE)); |
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if (sizeof(ARTICLE_CACHE) + p_cache->data_len != mmap_len) |
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{ |
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log_error("Inconsistent length, cache_len(%ld) + data_len(%ld) != mmap_len(%ld)\n", |
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sizeof(ARTICLE_CACHE), p_cache->data_len, mmap_len); |
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if (munmap(p_mmap, mmap_len) < 0) |
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{ |
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log_error("munmap() error (%d)\n", errno); |
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} |
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return -3; |
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} |
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p_cache->p_mmap = p_mmap; |
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p_cache->p_data = p_mmap + sizeof(ARTICLE_CACHE); |
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return 0; |
return 0; |
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} |
} |
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int article_cache_unload(ARTICLE_CACHE *p_cache) |
int article_cache_unload(ARTICLE_CACHE *p_cache) |
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{ |
{ |
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if (p_cache == NULL || p_cache->p_data == NULL) |
if (p_cache == NULL || p_cache->p_mmap == NULL) |
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{ |
{ |
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log_error("article_cache_unload() NULL pointer error\n"); |
log_error("article_cache_unload() NULL pointer error\n"); |
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return -1; |
return -1; |
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} |
} |
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free(p_cache->p_data); |
if (munmap(p_cache->p_mmap, sizeof(ARTICLE_CACHE) + p_cache->data_len) < 0) |
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{ |
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log_error("munmap() error (%d)\n", errno); |
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return -2; |
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} |
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p_cache->p_mmap = NULL; |
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p_cache->p_data = NULL; |
p_cache->p_data = NULL; |
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return 0; |
return 0; |