--- lbbs/src/screen.c 2025/05/15 09:16:47 1.50 +++ lbbs/src/screen.c 2025/05/18 08:53:21 1.63 @@ -14,25 +14,26 @@ * * ***************************************************************************/ +#include "screen.h" #include "bbs.h" #include "common.h" #include "str_process.h" #include "log.h" #include "io.h" -#include "screen.h" +#include "file_loader.h" +#include #include #include #include #include +#include #include #include #include +#include #define ACTIVE_BOARD_HEIGHT 8 -int screen_rows = 24; -int screen_cols = 80; - void moveto(int row, int col) { if (row >= 0) @@ -47,7 +48,7 @@ void moveto(int row, int col) void clrtoeol() { - prints("\033[K"); + prints(CTRL_SEQ_CLR_LINE); } void clrline(int line_begin, int line_end) @@ -57,7 +58,7 @@ void clrline(int line_begin, int line_en for (i = line_begin; i <= line_end; i++) { moveto(i, 0); - prints("\033[K"); + prints(CTRL_SEQ_CLR_LINE); } } @@ -76,7 +77,7 @@ void clearscr() int press_any_key() { - moveto(screen_rows, 0); + moveto(SCREEN_ROWS, 0); clrtoeol(); prints(" \033[1;33m按任意键继续...\033[0;37m"); @@ -224,65 +225,36 @@ int get_data(int row, int col, char *pro return len; } -int display_file(const char *filename) -{ - char buffer[LINE_BUFFER_LEN]; - FILE *fin; - size_t i; - - if ((fin = fopen(filename, "r")) == NULL) - { - return -1; - } - - while (fgets(buffer, sizeof(buffer) - 1, fin)) - { - i = strnlen(buffer, sizeof(buffer) - 1); - if (buffer[i - 1] == '\n' && buffer[i - 2] != '\r') - { - buffer[i - 1] = '\r'; - buffer[i] = '\n'; - buffer[i + 1] = '\0'; - } - prints(buffer); - iflush(); - } - fclose(fin); - - return 0; -} - int display_file_ex(const char *filename, int begin_line, int wait) { static int show_help = 1; char buffer[LINE_BUFFER_LEN]; - int ch = 0; + int ch = KEY_NULL; int input_ok, line, max_lines; - long int c_line_current = 0; - long int c_line_total = 0; - FILE *fin; - long *p_line_offsets; + long int line_current = 0; + const void *p_shm; + size_t data_len; + long line_total; + const void *p_data; + const long *p_line_offsets; long int len; long int percentile; - int loop = 1; + int loop; - if ((fin = fopen(filename, "r")) == NULL) + if ((p_shm = get_file_shm(filename, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL) { - log_error("Unable to open file %s\n", filename); - return -1; + log_error("get_file_shm(%s) error\n", filename); + return KEY_NULL; } - p_line_offsets = (long *)malloc(sizeof(long) * MAX_FILE_LINES); - - c_line_total = split_file_lines(fin, screen_cols, p_line_offsets, MAX_FILE_LINES); - - clrline(begin_line, screen_rows); + clrline(begin_line, SCREEN_ROWS); line = begin_line; - max_lines = screen_rows - 1; + max_lines = SCREEN_ROWS - 1; + loop = 1; while (!SYS_server_exit && loop) { - if (c_line_current >= c_line_total && c_line_total <= screen_rows - 2) + if (line_current >= line_total && line_total <= SCREEN_ROWS - 2) { if (wait) { @@ -297,18 +269,18 @@ int display_file_ex(const char *filename break; } - if (c_line_current >= c_line_total || line >= max_lines) + if (line_current >= line_total || line >= max_lines) { - if (c_line_current - (line - 1) + (screen_rows - 2) < c_line_total) + if (line_current - (line - 1) + (SCREEN_ROWS - 2) < line_total) { - percentile = (c_line_current - (line - 1) + (screen_rows - 2)) * 100 / c_line_total; + percentile = (line_current - (line - 1) + (SCREEN_ROWS - 2)) * 100 / line_total; } else { percentile = 100; } - moveto(screen_rows, 0); + moveto(SCREEN_ROWS, 0); prints("\033[1;44;32m%s (%d%%)%s\033[33m │ 结束 ← │ ↑/↓/PgUp/PgDn 移动 │ ? 辅助说明 │ \033[m", (percentile < 100 ? "下面还有喔" : "没有更多了"), percentile, (percentile < 10 ? " " : (percentile < 100 ? " " : ""))); @@ -321,77 +293,77 @@ int display_file_ex(const char *filename input_ok = 1; switch (ch) { - case KEY_NULL: + // case KEY_NULL: case KEY_TIMEOUT: goto cleanup; case KEY_HOME: - c_line_current = 0; + line_current = 0; line = begin_line; - max_lines = screen_rows - 1; - clrline(begin_line, screen_rows); + max_lines = SCREEN_ROWS - 1; + clrline(begin_line, SCREEN_ROWS); break; case KEY_END: - c_line_current = c_line_total - (screen_rows - 2); + line_current = line_total - (SCREEN_ROWS - 2); line = begin_line; - max_lines = screen_rows - 1; - clrline(begin_line, screen_rows); + max_lines = SCREEN_ROWS - 1; + clrline(begin_line, SCREEN_ROWS); break; case KEY_UP: - if (c_line_current - line < 0) // Reach top + if (line_current - line < 0) // Reach top { break; } - c_line_current -= line; + line_current -= line; line = begin_line; // max_lines = begin_line + 1; // prints("\033[T"); // Scroll down 1 line - max_lines = screen_rows - 1; // Legacy Fterm only works with this line + max_lines = SCREEN_ROWS - 1; // Legacy Fterm only works with this line break; case CR: igetch_reset(); case KEY_DOWN: - if (c_line_current + ((screen_rows - 2) - (line - 1)) >= c_line_total) // Reach bottom + if (line_current + ((SCREEN_ROWS - 2) - (line - 1)) >= line_total) // Reach bottom { break; } - c_line_current += ((screen_rows - 2) - (line - 1)); - line = screen_rows - 2; - max_lines = screen_rows - 1; - moveto(screen_rows, 0); + line_current += ((SCREEN_ROWS - 2) - (line - 1)); + line = SCREEN_ROWS - 2; + max_lines = SCREEN_ROWS - 1; + moveto(SCREEN_ROWS, 0); clrtoeol(); prints("\033[S"); // Scroll up 1 line break; case KEY_PGUP: case Ctrl('B'): - if (c_line_current - line < 0) // Reach top + if (line_current - line < 0) // Reach top { break; } - c_line_current -= ((screen_rows - 3) + (line - 1)); - if (c_line_current < 0) + line_current -= ((SCREEN_ROWS - 3) + (line - 1)); + if (line_current < 0) { - c_line_current = 0; + line_current = 0; } line = begin_line; - max_lines = screen_rows - 1; - clrline(begin_line, screen_rows); + max_lines = SCREEN_ROWS - 1; + clrline(begin_line, SCREEN_ROWS); break; case KEY_RIGHT: case KEY_PGDN: case Ctrl('F'): case KEY_SPACE: - if (c_line_current + (screen_rows - 2) - (line - 1) >= c_line_total) // Reach bottom + if (line_current + (SCREEN_ROWS - 2) - (line - 1) >= line_total) // Reach bottom { break; } - c_line_current += (screen_rows - 3) - (line - 1); - if (c_line_current + screen_rows - 2 > c_line_total) // No enough lines to display + line_current += (SCREEN_ROWS - 3) - (line - 1); + if (line_current + SCREEN_ROWS - 2 > line_total) // No enough lines to display { - c_line_current = c_line_total - (screen_rows - 2); + line_current = line_total - (SCREEN_ROWS - 2); } line = begin_line; - max_lines = screen_rows - 1; - clrline(begin_line, screen_rows); + max_lines = SCREEN_ROWS - 1; + clrline(begin_line, SCREEN_ROWS); break; case KEY_LEFT: case 'q': @@ -412,13 +384,12 @@ int display_file_ex(const char *filename show_help = 1; // Refresh after display help information - c_line_current -= (line - 1); + line_current -= (line - 1); line = begin_line; - max_lines = screen_rows - 1; - clrline(begin_line, screen_rows); + max_lines = SCREEN_ROWS - 1; + clrline(begin_line, SCREEN_ROWS); break; default: - log_std("Input: %d\n", ch); input_ok = 0; break; } @@ -429,83 +400,95 @@ int display_file_ex(const char *filename continue; } - fseek(fin, p_line_offsets[c_line_current], SEEK_SET); - len = p_line_offsets[c_line_current + 1] - p_line_offsets[c_line_current]; + len = p_line_offsets[line_current + 1] - p_line_offsets[line_current]; if (len >= LINE_BUFFER_LEN) { - log_error("Error length exceeds buffer size: %d\n", len); + log_error("buffer overflow: len=%ld(%ld - %ld) line=%ld \n", + len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current); len = LINE_BUFFER_LEN - 1; } - if (fgets(buffer, (int)len + 1, fin) == NULL) - { - log_error("Reach EOF\n"); - break; - } + + memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len); + buffer[len] = '\0'; + moveto(line, 0); clrtoeol(); prints("%s", buffer); - c_line_current++; + line_current++; line++; } cleanup: - free(p_line_offsets); - fclose(fin); - return ch; } -int show_top(char *status) +int show_top(const char *status) { - int end_of_line; - int display_len; - unsigned int len; + char status_f[21]; + int truncate; + int status_len; + int section_name_len; + int len; - char space1[LINE_BUFFER_LEN]; - char space2[LINE_BUFFER_LEN]; + strncpy(status_f, status, sizeof(status_f) - 1); + status_f[sizeof(status_f) - 1] = '\0'; - len = split_line(status, 20, &end_of_line, &display_len); - if (end_of_line) + len = split_line(status_f, 20, &truncate, &status_len); + if (truncate) { - status[len] = '\0'; + log_error("Status string is truncated\n"); + status_f[len] = '\0'; } - str_space(space1, 31 - display_len); - len = split_line(BBS_current_section_name, 20, &end_of_line, &display_len); - if (end_of_line) + len = split_line(BBS_current_section_name, 20, &truncate, §ion_name_len); + if (truncate) { - status[len] = '\0'; + log_error("Section name is truncated\n"); } - str_space(space2, 30 - display_len); moveto(1, 0); clrtoeol(); - prints("\033[1;44;33m%s \033[37m%s%s%s\033[33m 讨论区 [%s]\033[m", - status, space1, BBS_name, space2, BBS_current_section_name); + prints("\033[1;44;33m%s\033[37m%*s%*s\033[33m 讨论区 [%s]\033[m", + status_f, 32, BBS_name, 26, "", BBS_current_section_name); iflush(); return 0; } -int show_bottom(char *msg) +int show_bottom(const char *msg) { char str_time[LINE_BUFFER_LEN]; - char space[LINE_BUFFER_LEN]; time_t time_online; struct tm *tm_online; + char msg_f[21]; + int truncate; + int msg_len; + int len; + int len_username; get_time_str(str_time, sizeof(str_time)); - str_space(space, 34 - (int)strnlen(BBS_username, sizeof(BBS_username))); + + strncpy(msg_f, msg, sizeof(msg_f) - 1); + msg_f[sizeof(msg_f) - 1] = '\0'; + + len = split_line(msg_f, 20, &truncate, &msg_len); + if (truncate) + { + log_error("Status string is truncated\n"); + msg_f[len] = '\0'; + } + + len_username = (int)strnlen(BBS_username, sizeof(BBS_username)); time_online = time(0) - BBS_login_tm; tm_online = gmtime(&time_online); - moveto(screen_rows, 0); + moveto(SCREEN_ROWS, 0); clrtoeol(); - prints("\033[1;44;33m[\033[36m%s\033[33m]%s帐号[\033[36m%s\033[33m]" + prints("\033[1;44;33m[\033[36m%s\033[33m]%*s%*s帐号[\033[36m%s\033[33m]" "[\033[36m%1d\033[33m:\033[36m%2d\033[33m:\033[36m%2d\033[33m]\033[m", - str_time, space, BBS_username, tm_online->tm_mday - 1, - tm_online->tm_hour, tm_online->tm_min); + str_time, 21, msg_f, 13 - len_username, "", BBS_username, + tm_online->tm_mday - 1, tm_online->tm_hour, tm_online->tm_min); iflush(); return 0; @@ -513,48 +496,51 @@ int show_bottom(char *msg) int show_active_board() { - char filename[FILE_PATH_LEN]; - char buffer[LINE_BUFFER_LEN]; - FILE *fin; - static int line; - unsigned int len; - int end_of_line; - int display_len; + static int line_current = 0; + static const void *p_shm = NULL; + static size_t data_len; + static long line_total; + static const void *p_data; + static const long *p_line_offsets; - clrline(3, 2 + ACTIVE_BOARD_HEIGHT); - - if ((fin = fopen(DATA_ACTIVE_BOARD, "r")) == NULL) - { - log_error("Unable to open file %s\n", filename); - return -1; - } + char buffer[LINE_BUFFER_LEN]; + long int len; - for (int i = 0; i < line; i++) + if (p_shm == NULL) { - if (fgets(buffer, sizeof(buffer), fin) == NULL) + if ((p_shm = get_file_shm(DATA_ACTIVE_BOARD, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL) { - line = 0; - rewind(fin); - break; + log_error("get_file_shm(%s) error\n", DATA_ACTIVE_BOARD); + return KEY_NULL; } } + clrline(3, 2 + ACTIVE_BOARD_HEIGHT); + for (int i = 0; i < ACTIVE_BOARD_HEIGHT; i++) { - if (fgets(buffer, sizeof(buffer), fin) == NULL) + len = p_line_offsets[line_current + 1] - p_line_offsets[line_current]; + if (len >= LINE_BUFFER_LEN) { - line = 0; - break; + log_error("buffer overflow: len=%ld(%ld - %ld) line=%ld \n", + len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current); + len = LINE_BUFFER_LEN - 1; } - line++; - len = split_line(buffer, screen_cols, &end_of_line, &display_len); - buffer[len] = '\0'; // Truncate over-length line + + memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len); + buffer[len] = '\0'; + moveto(3 + i, 0); prints("%s", buffer); + + line_current++; + if (line_current >= line_total) + { + line_current = 0; + break; + } } iflush(); - fclose(fin); - return 0; }