Documentation updates and cleanups.
[paraslash.git] / gui.c
diff --git a/gui.c b/gui.c
index c058819..9a02bdc 100644 (file)
--- a/gui.c
+++ b/gui.c
@@ -1,42 +1,34 @@
 /*
- * Copyright (C) 1998-2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 1998-2008 Andre Noll <maan@systemlinux.org>
  *
- *     This program is free software; you can redistribute it and/or modify
- *     it under the terms of the GNU General Public License as published by
- *     the Free Software Foundation; either version 2 of the License, or
- *     (at your option) any later version.
- *
- *     This program is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public License
- *     along with this program; if not, write to the Free Software
- *     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
+ * Licensed under the GPL v2. For licencing details see COPYING.
  */
 
-/** \file gui.c ncurses-based interface for paraslash */
+/** \file gui.c Curses-based interface for paraslash. */
 
+#include <signal.h>
+#include <sys/types.h>
+#include <dirent.h>
 #include "gui.cmdline.h"
 #include "para.h"
+#include "gui.h"
+#include "string.h"
 #include <curses.h>
 #include "ringbuffer.h"
-#include "string.h"
 #include "fd.h"
 #include "error.h"
+#include "list.h"
+#include "sched.h"
+#include "signal.h"
 
 /** define the array of error lists needed by para_gui */
 INIT_GUI_ERRLISTS;
-extern const char *status_item_list[NUM_STAT_ITEMS];
 static char *stat_content[NUM_STAT_ITEMS];
 
 #define STANDARD_STATUS_BAR "para_gui " PACKAGE_VERSION " (hit ? for help)"
 
 static int signal_pipe;
 
-static void finish(int sig);
-
 static struct win_data {
        WINDOW *win;
        NCURSES_SIZE_T begx;
@@ -51,13 +43,13 @@ struct rb_entry {
        size_t len;
        int color;
 };
-void *bot_win_rb;
+struct ringbuffer *bot_win_rb;
 #define NUM_LINES(len) (1 + (len) / bot.cols)
 
 static unsigned scroll_position;
 
-static int external_cmd_died, curses_active;
-static pid_t external_cmd_pid;
+static int cmd_died, curses_active;
+static pid_t cmd_pid;
 
 static int command_pipe = -1;
 static int audiod_pipe = -1;
@@ -66,15 +58,15 @@ static struct gui_args_info conf;
 enum {GETCH_MODE, COMMAND_MODE, EXTERNAL_MODE};
 
 
-#define COLOR_STATUSBAR 32
-#define COLOR_COMMAND 33
-#define COLOR_OUTPUT 34
-#define COLOR_MSG 35
-#define COLOR_ERRMSG 36
-#define COLOR_WELCOME 37
-#define COLOR_SEPARATOR 38
-#define COLOR_TOP 39
-#define COLOR_BOT 40
+#define COLOR_STATUSBAR 52
+#define COLOR_COMMAND 53
+#define COLOR_OUTPUT 54
+#define COLOR_MSG 55
+#define COLOR_ERRMSG 56
+#define COLOR_WELCOME 57
+#define COLOR_SEPARATOR 58
+#define COLOR_TOP 59
+#define COLOR_BOT 60
 
 struct gui_command {
        const char *key;
@@ -197,6 +189,38 @@ struct gui_command command_list[] = {
        }
 };
 
+static int para_open_audiod_pipe(char *cmd)
+{
+       int fds[3] = {0, 1, 0};
+       pid_t pid;
+       int ret = para_exec_cmdline_pid(&pid, cmd, fds);
+       if (ret < 0)
+               return ret;
+       ret = mark_fd_nonblocking(fds[1]);
+       if (ret > 0)
+               return fds[1];
+       close(fds[1]);
+       return ret;
+}
+
+static int read_audiod_pipe(int fd, line_handler_t *line_handler)
+{
+       static char buf[4096];
+       const ssize_t bufsize = sizeof(buf) - 1;
+       static ssize_t loaded;
+       ssize_t ret;
+
+       if (loaded >= bufsize)
+               loaded = 0;
+       ret = read(fd, buf + loaded, bufsize - loaded);
+       if (ret > 0) {
+               loaded += ret;
+               buf[loaded] = '\0';
+               loaded = for_each_line(buf, loaded, line_handler, NULL);
+       }
+       return ret;
+}
+
 static int find_cmd_byname(char *name)
 {
        int i;
@@ -457,11 +481,12 @@ __printf_2_3 static void outputf(int color, const char* fmt,...)
        wrefresh(bot.win);
 }
 
-static void add_output_line(char *line)
+static int add_output_line(char *line, __a_unused void *data)
 {
        if (!curses_active)
-               return;
+               return 1;
        rb_add_entry(COLOR_OUTPUT, para_strdup(line));
+       return 1;
 }
 
 void para_log(int ll, const char *fmt,...)
@@ -494,7 +519,7 @@ static void setup_signal_handling(void)
        para_install_sighandler(SIGCHLD);
        para_install_sighandler(SIGWINCH);
        para_install_sighandler(SIGUSR1);
-       signal(SIGPIPE, SIG_IGN);
+//     signal(SIGPIPE, SIG_IGN);
        signal(SIGHUP, SIG_IGN);
 }
 
@@ -654,7 +679,6 @@ static void print_stat_item(int i)
        if (!curses_active || !d.len || !c)
                return;
        tmp = make_message("%s%s%s", d.prefix, c, d.postfix);
-//     PARA_DEBUG_LOG("%s: read: %s\n", __func__, tmp);
        wmove(top.win, d.y * top.lines / 100, d.x * COLS / 100);
        wrefresh(top.win);
        wattron(top.win, COLOR_PAIR(i + 1));
@@ -669,14 +693,15 @@ static void print_all_items(void)
 
        if (!curses_active)
                return;
-       for (i = 0; i < NUM_STAT_ITEMS; i++)
+       FOR_EACH_STATUS_ITEM(i)
                print_stat_item(i);
 }
+
 static void clear_all_items(void)
 {
        int i;
 
-       for (i = 0; i < NUM_STAT_ITEMS; i++) {
+       FOR_EACH_STATUS_ITEM(i) {
                free(stat_content[i]);
                stat_content[i] = para_strdup("");
        }
@@ -685,10 +710,11 @@ static void clear_all_items(void)
 static void init_colors(void)
 {
        int i;
+
        if (!has_colors())
                msg_n_exit(EXIT_FAILURE, "Error: No color term\n");
        start_color();
-       for (i = 0; i < NUM_STAT_ITEMS; i++)
+       FOR_EACH_STATUS_ITEM(i)
                if (theme.data[i].len)
                        init_pair(i + 1, theme.data[i].fg, theme.data[i].bg);
        init_pair(COLOR_STATUSBAR, theme.sb_fg, theme.sb_bg);
@@ -730,14 +756,15 @@ static void init_curses(void)
 
 static void check_sigchld(void)
 {
+       int ret;
        pid_t pid;
 reap_next_child:
-       pid = para_reap_child();
-       if (pid <= 0)
+       ret = para_reap_child(&pid);
+       if (ret <= 0)
                return;
-       if (pid == external_cmd_pid) {
-               external_cmd_pid = 0;
-               external_cmd_died = 1;
+       if (pid == cmd_pid) {
+               cmd_pid = 0;
+               cmd_died = 1;
        }
        goto reap_next_child;
 }
@@ -745,7 +772,7 @@ reap_next_child:
 /*
  * print status line if line starts with known command.
  */
-static void check_stat_line(char *line)
+static int check_stat_line(char *line, __a_unused void *data)
 {
        int i;
 
@@ -753,11 +780,13 @@ static void check_stat_line(char *line)
        i = stat_line_valid(line);
        if (i >= 0) {
                line += strlen(status_item_list[i]) + 1;
+               if (*line == ' ')
+                       line++;
                free(stat_content[i]);
                stat_content[i] = para_strdup(line);
                print_stat_item(i);
        }
-       return;
+       return 1;
 }
 
 /*
@@ -829,13 +858,13 @@ static void handle_signal(int sig)
                }
                return;
        case SIGINT:
-               PARA_WARNING_LOG("%s", "caught SIGINT, reset");
+               PARA_WARNING_LOG("caught SIGINT, reset");
                /* Nothing to do. SIGINT killed our child, para_client stat.
                 * This get noticed by do_select which resets everything
                 */
                return;
        case SIGUSR1:
-               PARA_NOTICE_LOG("%s", "got SIGUSR1, rereading configuration");
+               PARA_NOTICE_LOG("got SIGUSR1, rereading configuration");
                com_reread_conf();
                return;
        case SIGCHLD:
@@ -867,14 +896,14 @@ static int open_audiod_pipe(void)
  *
  * EXTERNAL_MODE: Check only signal pipe. Used when an external command
  * is running. During that thime curses is disabled.  Returns when
- * external_cmd_pid == 0.
+ * cmd_pid == 0.
  */
 static int do_select(int mode)
 {
        fd_set rfds;
        int ret;
        int max_fileno, cp_numread = 1;
-       char command_buf[STRINGSIZE] = "";
+       char command_buf[4096] = "";
        int cbo = 0; /* command buf offset */
        struct timeval tv;
 repeat:
@@ -906,7 +935,7 @@ repeat:
        if (command_pipe >= 0 && mode == COMMAND_MODE &&
                        FD_ISSET(command_pipe, &rfds)) {
                cp_numread = read(command_pipe, command_buf + cbo,
-                       STRINGSIZE - 1 - cbo);
+                       sizeof(command_buf) - 1 - cbo);
                if (cp_numread >= 0)
                        cbo += cp_numread;
                else {
@@ -921,8 +950,8 @@ repeat:
                        close(audiod_pipe);
                        audiod_pipe = -1;
                        clear_all_items();
-                       free(stat_content[SI_STATUS_BAR]);
-                       stat_content[SI_STATUS_BAR] =
+                       free(stat_content[SI_BASENAME]);
+                       stat_content[SI_BASENAME] =
                                para_strdup("audiod not running!?");
                        print_all_items();
                }
@@ -932,10 +961,21 @@ check_return:
                if (cp_numread <= 0 && !cbo) /* command complete */
                        return 0;
                if (cbo)
-                       cbo = for_each_line(command_buf, cbo, &add_output_line);
+                       cbo = for_each_line(command_buf, cbo,
+                               &add_output_line, NULL);
                if (cp_numread <= 0)
                        cbo = 0;
                wrefresh(bot.win);
+               ret = wgetch(top.win);
+               if (ret != ERR && ret != KEY_RESIZE) {
+                       if (command_pipe) {
+                               close(command_pipe);
+                               command_pipe = -1;
+                       }
+                       if (cmd_pid)
+                               kill(cmd_pid, SIGTERM);
+                       return -1;
+               }
                break;
        case GETCH_MODE:
                ret = wgetch(top.win);
@@ -943,8 +983,8 @@ check_return:
                        return ret;
                break;
        case EXTERNAL_MODE:
-               if (external_cmd_died) {
-                       external_cmd_died = 0;
+               if (cmd_died) {
+                       cmd_died = 0;
                        return 0;
                }
        }
@@ -956,25 +996,31 @@ check_return:
  */
 static int send_output(void)
 {
+       int ret;
+
        if (command_pipe < 0)
                return 0;
+       ret = mark_fd_nonblocking(command_pipe);
+       if (ret < 0) {
+               close(command_pipe);
+               return ret;
+       }
        if (do_select(COMMAND_MODE) >= 0)
-               PARA_INFO_LOG("%s", "command complete");
+               PARA_INFO_LOG("command complete");
        else
-               PARA_NOTICE_LOG("%s", "command aborted");
+               PARA_NOTICE_LOG("command aborted");
        print_in_bar(COLOR_MSG, " ");
        return 1;
 }
 
 static int client_cmd_cmdline(char *cmd)
 {
-       pid_t pid;
        int ret, fds[3] = {0, 1, 0};
-       char *c = make_message(BINDIR "/para_client %s", cmd);
+       char *c = make_message(BINDIR "/para_client -- %s", cmd);
 
        outputf(COLOR_COMMAND, "%s", c);
-       print_in_bar(COLOR_MSG, "executing client command, hit q to abort\n");
-       ret = para_exec_cmdline_pid(&pid, c, fds);
+       print_in_bar(COLOR_MSG, "executing client command, hit any key to abort\n");
+       ret = para_exec_cmdline_pid(&cmd_pid, c, fds);
        free(c);
        if (ret < 0)
                return -1;
@@ -987,12 +1033,11 @@ static int client_cmd_cmdline(char *cmd)
  */
 static int display_cmd(char *cmd)
 {
-       pid_t pid;
        int fds[3] = {0, 1, 0};
 
-       print_in_bar(COLOR_MSG, "executing display command, hit q to abort");
+       print_in_bar(COLOR_MSG, "executing display command, hit any key to abort");
        outputf(COLOR_COMMAND, "%s", cmd);
-       if (para_exec_cmdline_pid(&pid, cmd, fds) < 0)
+       if (para_exec_cmdline_pid(&cmd_pid, cmd, fds) < 0)
                return -1;
        command_pipe = fds[1];
        return send_output();
@@ -1005,10 +1050,11 @@ static int external_cmd(char *cmd)
 {
        int fds[3] = {-1, -1, -1};
 
-       if (external_cmd_pid)
+       if (cmd_pid)
                return -1;
        shutdown_curses();
-       para_exec_cmdline_pid(&external_cmd_pid, cmd, fds);
+       para_exec_cmdline_pid(&cmd_pid, cmd, fds);
+       cmd_died = 0;
        do_select(EXTERNAL_MODE);
        init_curses();
        return 0;
@@ -1148,15 +1194,21 @@ static void com_ll_incr(void)
 static void com_reread_conf(void)
 {
        char *cf =configfile_exists();
+       struct gui_cmdline_parser_params params = {
+               .override = 1,
+               .initialize = 1,
+               .check_required = 0,
+               .check_ambiguity = 0
+       };
 
        if (!cf) {
-               PARA_WARNING_LOG("%s", "there is no configuration to read");
+               PARA_WARNING_LOG("there is no configuration to read");
                return;
        }
-       PARA_INFO_LOG("%s", "rereading command line options and config file");
+       PARA_INFO_LOG("rereading command line options and config file");
        gui_cmdline_parser(_argc, _argv, &conf);
-       gui_cmdline_parser_configfile(cf, &conf, 1, 1, 0);
-       PARA_NOTICE_LOG("%s", "configuration read");
+       gui_cmdline_parser_config_file(cf, &conf, &params);
+       PARA_NOTICE_LOG("config file reloaded");
        if (check_key_map_args() < 0)
                finish(EXIT_FAILURE);
 }
@@ -1201,7 +1253,7 @@ static void com_help(void)
 static void com_shrink_top_win(void)
 {
        if (top.lines <= theme.top_lines_min) {
-               PARA_WARNING_LOG("%s", "can not decrease top window");
+               PARA_WARNING_LOG("can not decrease top window");
                return;
        }
        init_wins(top.lines - 1);
@@ -1213,7 +1265,7 @@ static void com_shrink_top_win(void)
 static void com_enlarge_top_win(void)
 {
        if (bot.lines < 3) {
-               PARA_WARNING_LOG("%s", "can not increase top window");
+               PARA_WARNING_LOG("can not increase top window");
                return;
        }
        init_wins(top.lines + 1);
@@ -1317,6 +1369,7 @@ int main(int argc, char *argv[])
                fprintf(stderr, "parse error while reading command line\n");
                exit(EXIT_FAILURE);
        }
+       HANDLE_VERSION_FLAG("gui", conf);
        init_theme(0, &theme);
        top.lines = theme.top_lines_default;
        if (check_key_map_args() < 0) {
@@ -1329,8 +1382,15 @@ int main(int argc, char *argv[])
                        conf.config_file_arg);
                exit(EXIT_FAILURE);
        }
-       if (cf)
-               gui_cmdline_parser_configfile(cf, &conf, 0, 0, 0);
+       if (cf) {
+               struct gui_cmdline_parser_params params = {
+                       .override = 0,
+                       .initialize = 0,
+                       .check_required = 0,
+                       .check_ambiguity = 0
+               };
+               gui_cmdline_parser_config_file(cf, &conf, &params);
+       }
        if (check_key_map_args() < 0) {
                fprintf(stderr, "invalid key map in config file\n");
                exit(EXIT_FAILURE);