/* * Project : tin - a Usenet reader * Module : help.c * Author : I.Lea * Created : 01-04-91 * Updated : 11-07-93 * Notes : * Copyright : (c) Copyright 1991-93 by Iain Lea * You may freely copy or redistribute this software, * so long as there is no profit made from its use, sale * trade or reproduction. You may not change this copy- * right notice, and it must be included in any copy made */ #include "tin.h" char *help_select[] = { txt_help_g_4, txt_help_ctrl_d, txt_help_ctrl_f, txt_help_ctrl_l, txt_help_g_ctrl_k, txt_help_g_ctrl_r, txt_help_g_cr, txt_help_g_tab, txt_help_b, txt_help_sel_c, txt_help_g_d, txt_help_g, txt_help_j, txt_help_h, txt_help_I, txt_help_g_l, txt_help_m, txt_help_M, txt_help_n, txt_help_g_q, txt_help_g_r, txt_help_bug_report, txt_help_s, txt_help_S, txt_help_v, txt_help_w, txt_help_W, txt_help_g_y, txt_help_y, txt_help_g_z, txt_help_g_search, #ifndef NO_SHELL_ESCAPE txt_help_shell, #endif (char *) 0 }; char *help_spooldir[] = { txt_help_4, txt_help_ctrl_d, txt_help_ctrl_f, txt_help_ctrl_l, txt_help_cr, txt_help_b, txt_help_h, txt_help_I, txt_help_j, txt_help_i, txt_help_q, txt_help_bug_report, txt_help_v, (char *) 0 }; char *help_group[] = { txt_help_i_4, txt_help_ctrl_d, txt_help_ctrl_f, txt_help_ctrl_k, txt_help_ctrl_l, txt_help_i_cr, txt_help_i_tab, txt_help_a, txt_help_b, txt_help_B, txt_help_c, txt_help_cC, txt_help_d, txt_help_g, txt_help_h, txt_help_I, txt_help_j, txt_help_K, txt_help_l, txt_help_p_m, txt_help_M, txt_help_o, txt_help_i_n, txt_help_i_p, txt_help_i, txt_help_q, txt_help_r, txt_help_bug_report, txt_help_p_s, txt_help_t, txt_help_u, txt_help_U, txt_help_v, txt_help_w, txt_help_W, txt_help_x, txt_help_p_z, txt_help_i_search, #ifndef NO_SHELL_ESCAPE txt_help_shell, #endif txt_help_dash, #ifndef NO_PIPING txt_help_pipe, #endif txt_help_i_star, txt_help_i_dot, txt_help_i_coma, txt_help_i_tilda, txt_help_X, txt_help_plus, txt_help_equal, txt_help_semicolon, (char *) 0 }; char *help_thread[] = { txt_help_t_0, txt_help_t_4, txt_help_ctrl_d, txt_help_ctrl_f, txt_help_ctrl_l, txt_help_t_cr, txt_help_p_tab, txt_help_b, txt_help_d, txt_help_h, txt_help_I, txt_help_j, txt_help_ck, txt_help_i, txt_help_q, txt_help_bug_report, txt_help_t, txt_help_v, txt_help_p_z, (char *) 0 }; char *help_page[] = { txt_help_p_0, txt_help_p_4, txt_help_ctrl_d, txt_help_ctrl_f, txt_help_ctrl_h, txt_help_ctrl_k, txt_help_ctrl_l, txt_help_p_ctrl_r, txt_help_p_cr, txt_help_p_tab, txt_help_b, txt_help_a, txt_help_B, txt_help_c, txt_help_cC, txt_help_D, txt_help_p_d, txt_help_p_f, txt_help_p_g, txt_help_h, txt_help_I, txt_help_p_k, txt_help_p_m, txt_help_M, txt_help_p_n, txt_help_o, txt_help_p_p, txt_help_i, txt_help_q, txt_help_p_r, txt_help_p_s, txt_help_t, txt_help_T, txt_help_v, txt_help_w, txt_help_W, txt_help_x, txt_help_p_z, txt_help_p_search, #ifndef NO_SHELL_ESCAPE txt_help_shell, #endif txt_help_dash, #ifndef NO_PIPING txt_help_pipe, #endif txt_help_thread, txt_help_p_star, txt_help_p_dot, txt_help_p_coma, txt_help_p_tilda, (char *) 0 }; static char *info_title; static char **info_help; static int cur_page; static int group_len = 0; static int info_type; static int max_page; static int pos_help; void show_info_page (type, help, title) int type; char *help[]; char *title; { int ch; int i, len; int help_lines = 0; int old_page = 0; if (NOTESLINES <= 0) { return; } if (beginner_level) { help_lines = NOTESLINES + MINI_HELP_LINES - 1; } else { help_lines = NOTESLINES; } set_signals_help (); cur_page = 1; max_page = 1; pos_help = 0; info_help = help; info_type = type; info_title = title; /* * find how many elements in array */ if (type == HELP_INFO) { for (i=0 ; help[i] ; i++) { continue; } } else { for (i=0 ; posted[i].date[0] ; i++) { len = strlen (posted[i].group); if (len > group_len) { group_len = len; } } } max_page = i / help_lines; if (i % help_lines) { max_page++; } set_xclick_off (); while (1) { if (cur_page != old_page) { display_info_page (); } old_page = cur_page; ch = ReadCh (); switch (ch) { case ESC: /* common arrow keys */ #ifdef HAVE_KEY_PREFIX case KEY_PREFIX: #endif switch (get_arrow_key ()) { case KEYMAP_LEFT: goto help_done; break; case KEYMAP_UP: case KEYMAP_PAGE_UP: goto help_page_up; break; case KEYMAP_RIGHT: case KEYMAP_DOWN: case KEYMAP_PAGE_DOWN: goto help_page_down; break; case KEYMAP_HOME: goto help_home; break; case KEYMAP_END: goto help_end; break; } break; case ctrl('D'): /* page down */ case ctrl('F'): /* vi style */ case ' ': case 'j': help_page_down: if (cur_page < max_page) { pos_help = cur_page * help_lines; cur_page++; } else { pos_help = 0; cur_page = 1; } break; case ctrl('U'): /* page up */ case ctrl('B'): /* vi style */ case 'b': case 'k': help_page_up: if (cur_page > 1) { cur_page--; pos_help = (cur_page-1) * help_lines; } else { pos_help = (max_page-1) * help_lines; cur_page = max_page; } break; case ctrl('R'): /* Home */ case 'g': help_home: if (cur_page != 1) { cur_page = 1; pos_help = 0; } break; case '$': /* End */ case 'G': help_end: if (cur_page != max_page) { cur_page = max_page; pos_help = (max_page-1) * help_lines; } break; default: help_done: #ifndef USE_CLEARSCREEN ClearScreen (); #endif return; } } } void display_info_page () { char buf[LEN]; int i, help_lines; ClearScreen (); sprintf (buf, info_title, cur_page, max_page); center_line (0, TRUE, buf); MoveCursor (INDEX_TOP, 0); if (beginner_level) { help_lines = NOTESLINES + MINI_HELP_LINES - 1; } else { help_lines = NOTESLINES; } if (info_type == HELP_INFO) { for (i=pos_help ; i < (pos_help + help_lines) && info_help[i] ; i++) { fputs (info_help[i], stdout); } } else { for (i=pos_help ; i < (pos_help + help_lines) && posted[i].date[0] ; i++) { sprintf (buf, "%8s %c %-*s %s", posted[i].date, posted[i].action, group_len, posted[i].group, posted[i].subj); buf[cCOLS-2] = '\0'; printf ("%s\r\n", buf); } } center_line (cLINES, FALSE, txt_hit_space_for_more); } void show_mini_help (level) int level; { int line = 19; if (! beginner_level) { return; } line = NOTESLINES + (MINI_HELP_LINES - 2); switch (level) { case SELECT_LEVEL: center_line (line, FALSE, txt_mini_select_1); center_line (line+1, FALSE, txt_mini_select_2); center_line (line+2, FALSE, txt_mini_select_3); break; case SPOOLDIR_LEVEL: center_line (line, FALSE, txt_mini_spooldir_1); break; case GROUP_LEVEL: center_line (line, FALSE, txt_mini_group_1); center_line (line+1, FALSE, txt_mini_group_2); center_line (line+2, FALSE, txt_mini_group_3); break; case THREAD_LEVEL: center_line (line, FALSE, txt_mini_thread_1); center_line (line+1, FALSE, txt_mini_thread_2); break; case PAGE_LEVEL: center_line (line, FALSE, txt_mini_page_1); center_line (line+1, FALSE, txt_mini_page_2); center_line (line+2, FALSE, txt_mini_page_3); break; default: error_message ("Unknown display level", ""); break; } } void toggle_mini_help (level) int level; { beginner_level = !beginner_level; set_win_size (&cLINES, &cCOLS); show_mini_help (level); }