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conky/src/conky.cc
Marc Payne 57d9fdd0e0 Comment some of the callback-related code 
Some of the code dealing with callbacks and updates was a little
obscure. A few extra comments should help clarify the meaning.
2016-01-09 10:23:36 -07:00

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/* -*- mode: c++; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: t -*-
* vim: ts=4 sw=4 noet ai cindent syntax=cpp
*
* Conky, a system monitor, based on torsmo
*
* Any original torsmo code is licensed under the BSD license
*
* All code written since the fork of torsmo is licensed under the GPL
*
* Please see COPYING for details
*
* Copyright (c) 2004, Hannu Saransaari and Lauri Hakkarainen
* Copyright (c) 2005-2012 Brenden Matthews, Philip Kovacs, et. al.
* (see AUTHORS)
* All rights reserved.
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "config.h"
#include "text_object.h"
#include "conky.h"
#include "common.h"
#include <iostream>
#include <algorithm>
#include <sstream>
#include <string>
#include <stdarg.h>
#include <cmath>
#include <ctime>
#include <locale.h>
#include <signal.h>
#include <errno.h>
#include <limits.h>
#ifdef HAVE_DIRENT_H
#include <dirent.h>
#endif /* HAVE_DIRENT_H */
#include <sys/time.h>
#include <sys/param.h>
#ifdef HAVE_SYS_INOTIFY_H
#include <sys/inotify.h>
#endif /* HAVE_SYS_INOTIFY_H */
#ifdef BUILD_X11
#include "x11.h"
#include <X11/Xutil.h>
#ifdef BUILD_XDAMAGE
#include <X11/extensions/Xdamage.h>
#endif
#ifdef BUILD_IMLIB2
#include "imlib2.h"
#endif /* BUILD_IMLIB2 */
#endif /* BUILD_X11 */
#include <sys/types.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <netdb.h>
#include <fcntl.h>
#include <getopt.h>
#if defined BUILD_WEATHER_XOAP || defined BUILD_RSS
#include <libxml/parser.h>
#endif
#ifdef BUILD_CURL
#include <curl/curl.h>
#endif
/* local headers */
#include "core.h"
#include "build.h"
#include "colours.h"
#include "diskio.h"
#include "exec.h"
#ifdef BUILD_X11
#include "fonts.h"
#endif
#ifdef BUILD_ICONV
#include "iconv_tools.h"
#endif
#include "llua.h"
#include "logging.h"
#include "mail.h"
#include "nc.h"
#include "net_stat.h"
#include "temphelper.h"
#include "template.h"
#include "timeinfo.h"
#include "top.h"
#ifdef BUILD_MYSQL
#include "mysql.h"
#endif /* BUILD_MYSQL */
#ifdef BUILD_NVIDIA
#include "nvidia.h"
#endif
#ifdef BUILD_CURL
#include "ccurl_thread.h"
#endif /* BUILD_CURL */
#ifdef BUILD_WEATHER_METAR
#include "weather.h"
#endif /* BUILD_WEATHER_METAR */
#include "lua-config.hh"
#include "setting.hh"
/* check for OS and include appropriate headers */
#if defined(__linux__)
#include "linux.h"
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
#include "freebsd.h"
#elif defined(__DragonFly__)
#include "dragonfly.h"
#elif defined(__OpenBSD__)
#include "openbsd.h"
#endif
#ifdef BUILD_HTTP
#include <microhttpd.h>
#endif
#if defined(__FreeBSD_kernel__)
#include <bsd/bsd.h>
#endif
#ifdef BUILD_BUILTIN_CONFIG
#include "defconfig.h"
namespace { const char builtin_config_magic[] = "==builtin=="; }
#endif
#ifdef BUILD_OLD_CONFIG
#include "convertconf.h"
#endif
#ifndef S_ISSOCK
#define S_ISSOCK(x) ((x & S_IFMT) == S_IFSOCK)
#endif
#define MAX_IF_BLOCK_DEPTH 5
//#define SIGNAL_BLOCKING
#undef SIGNAL_BLOCKING
/* debugging level, used by logging.h */
int global_debug_level = 0;
/* disable inotify auto reload feature if desired */
static conky::simple_config_setting<bool> disable_auto_reload("disable_auto_reload", false, false);
/* two strings for internal use */
static char *tmpstring1, *tmpstring2;
enum spacer_state {
NO_SPACER = 0,
LEFT_SPACER,
RIGHT_SPACER
};
template<>
conky::lua_traits<spacer_state>::Map conky::lua_traits<spacer_state>::map = {
{ "none", NO_SPACER },
{ "left", LEFT_SPACER },
{ "right", RIGHT_SPACER }
};
static conky::simple_config_setting<spacer_state> use_spacer("use_spacer", NO_SPACER, false);
/* variables holding various config settings */
static conky::simple_config_setting<bool> short_units("short_units", false, true);
static conky::simple_config_setting<bool> format_human_readable("format_human_readable",
true, true);
static conky::simple_config_setting<bool> out_to_stdout("out_to_console",
// Default value is false, unless we are building without X
#ifdef BUILD_X11
false,
#else
true,
#endif
false);
static conky::simple_config_setting<bool> out_to_stderr("out_to_stderr", false, false);
int top_cpu, top_mem, top_time;
#ifdef BUILD_IOSTATS
int top_io;
#endif
int top_running;
static conky::simple_config_setting<bool> extra_newline("extra_newline", false, false);
static volatile int g_signal_pending;
/* Update interval */
conky::range_config_setting<double> update_interval("update_interval", 0.0,
std::numeric_limits<double>::infinity(), 3.0, true);
conky::range_config_setting<double> update_interval_on_battery("update_interval_on_battery", 0.0,
std::numeric_limits<double>::infinity(), NOBATTERY, true);
static bool on_battery = false;
double active_update_interval()
{ return (on_battery?update_interval_on_battery:update_interval).get(*state); }
void music_player_interval_setting::lua_setter(lua::state &l, bool init)
{
lua::stack_sentry s(l, -2);
if(l.isnil(-2)) {
l.checkstack(1);
l.pushnumber(update_interval.get(l));
l.replace(-3);
}
Base::lua_setter(l, init);
++s;
}
music_player_interval_setting music_player_interval;
void *global_cpu = NULL;
static conky::range_config_setting<unsigned int> max_text_width("max_text_width", 0,
std::numeric_limits<unsigned int>::max(), 0, true);
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
extern kvm_t *kd;
#endif
int argc_copy;
char** argv_copy;
/* prototypes for internally used functions */
static void signal_handler(int);
static void reload_config(void);
static void print_version(void)
{
std::cout << _(PACKAGE_NAME" " VERSION" compiled " BUILD_DATE" for " BUILD_ARCH"\n"
"\nCompiled in features:\n\n"
"System config file: " SYSTEM_CONFIG_FILE"\n"
"Package library path: " PACKAGE_LIBDIR"\n\n")
<< _("\n General:\n")
#ifdef HAVE_OPENMP
<< _(" * OpenMP\n")
#endif /* HAVE_OPENMP */
#ifdef BUILD_MATH
<< _(" * math\n")
#endif /* BUILD_MATH */
#ifdef BUILD_HDDTEMP
<< _(" * hddtemp\n")
#endif /* BUILD_HDDTEMP */
#ifdef BUILD_PORT_MONITORS
<< _(" * portmon\n")
#endif /* BUILD_PORT_MONITORS */
#ifdef BUILD_HTTP
<< _(" * HTTP\n")
#endif
#ifdef BUILD_IPV6
<< _(" * IPv6\n")
#endif /* BUILD_IPV6 */
#ifdef BUILD_IRC
<< _(" * IRC\n")
#endif
#ifdef BUILD_CURL
<< _(" * Curl\n")
#endif /* BUILD_CURL */
#ifdef BUILD_RSS
<< _(" * RSS\n")
#endif /* BUILD_RSS */
#ifdef BUILD_ICAL
<< _(" * ICal\n")
#endif /* BUILD_ICAL */
#ifdef BUILD_ICONV
<< _(" * iconv\n")
#endif /* BUILD_ICONV */
#ifdef BUILD_MYSQL
<< _(" * MySQL\n")
#endif /* BUILD_MYSQL */
#ifdef BUILD_WEATHER_METAR
<< _(" * Weather (METAR)\n")
#endif /* BUILD_WEATHER_METAR */
#ifdef BUILD_WEATHER_XOAP
<< _(" * Weather (XOAP)\n")
#endif /* BUILD_WEATHER_XOAP */
#ifdef BUILD_WLAN
<< _(" * wireless\n")
#endif /* BUILD_WLAN */
#ifdef BUILD_IBM
<< _(" * support for IBM/Lenovo notebooks\n")
#endif /* BUILD_IBM */
#ifdef BUILD_NVIDIA
<< _(" * nvidia\n")
#endif /* BUILD_NVIDIA */
#ifdef BUILD_EVE
<< _(" * eve-online\n")
#endif /* BUILD_EVE */
#ifdef BUILD_BUILTIN_CONFIG
<< _(" * builtin default configuration\n")
#endif /* BUILD_BUILTIN_CONFIG */
#ifdef BUILD_OLD_CONFIG
<< _(" * old configuration syntax\n")
#endif /* BUILD_OLD_CONFIG */
#ifdef BUILD_IMLIB2
<< _(" * Imlib2\n")
#endif /* BUILD_IMLIB2 */
#ifdef BUILD_MIXER_ALSA
<< _(" * ALSA mixer support\n")
#endif /* BUILD_MIXER_ALSA */
#ifdef BUILD_APCUPSD
<< _(" * apcupsd\n")
#endif /* BUILD_APCUPSD */
#ifdef BUILD_IOSTATS
<< _(" * iostats\n")
#endif /* BUILD_IOSTATS */
#ifdef BUILD_NCURSES
<< _(" * ncurses\n")
#endif /* BUILD_NCURSES */
#ifdef BUILD_I18N
<< _(" * Internationalization support\n")
#endif
#ifdef DEBUG
<< _(" * Debugging extensions\n")
#endif
#if defined BUILD_LUA_CAIRO || defined BUILD_LUA_IMLIB2 || BUILD_LUA_RSVG
<< _("\n Lua bindings:\n")
#endif
#ifdef BUILD_LUA_CAIRO
<< _(" * Cairo\n")
#endif /* BUILD_LUA_CAIRO */
#ifdef BUILD_LUA_IMLIB2
<< _(" * Imlib2\n")
#endif /* BUILD_LUA_IMLIB2 */
#ifdef BUILD_LUA_RSVG
<< _(" * RSVG\n")
#endif /* BUILD_LUA_RSVG */
#ifdef BUILD_X11
<< _(" X11:\n")
# ifdef BUILD_XDAMAGE
<< _(" * Xdamage extension\n")
# endif /* BUILD_XDAMAGE */
# ifdef BUILD_XSHAPE
<< _(" * Xshape extension (click through)\n")
# endif /* BUILD_XSHAPE */
# ifdef BUILD_XDBE
<< _(" * XDBE (double buffer extension)\n")
# endif /* BUILD_XDBE */
# ifdef BUILD_XFT
<< _(" * Xft\n")
# endif /* BUILD_XFT */
# ifdef BUILD_ARGB
<< _(" * ARGB visual\n")
# endif /* BUILD_ARGB */
#ifdef OWN_WINDOW
<< _(" * Own window\n")
#endif
#endif /* BUILD_X11 */
#if defined BUILD_AUDACIOUS || defined BUILD_BMPX || defined BUILD_CMUS || defined BUILD_MPD || defined BUILD_MOC || defined BUILD_XMMS2
<< _("\n Music detection:\n")
#endif
#ifdef BUILD_AUDACIOUS
<< _(" * Audacious\n")
#endif /* BUILD_AUDACIOUS */
#ifdef BUILD_BMPX
<< _(" * BMPx\n")
#endif /* BUILD_BMPX */
#ifdef BUILD_CMUS
<< _(" * CMUS\n")
#endif /* BUILD_CMUS */
#ifdef BUILD_MPD
<< _(" * MPD\n")
#endif /* BUILD_MPD */
#ifdef BUILD_MOC
<< _(" * MOC\n")
#endif /* BUILD_MOC */
#ifdef BUILD_XMMS2
<< _(" * XMMS2\n")
#endif /* BUILD_XMMS2 */
<< _("\n Default values:\n")
<< " * Netdevice: " DEFAULTNETDEV"\n"
<< " * Local configfile: " CONFIG_FILE"\n"
#ifdef BUILD_I18N
<< " * Localedir: " LOCALE_DIR"\n"
#endif
#ifdef BUILD_HTTP
<< " * HTTP-port: " << HTTPPORT << "\n"
#endif
<< " * Maximum netdevices: " << MAX_NET_INTERFACES << "\n"
<< " * Maximum text size: " << MAX_USER_TEXT_DEFAULT << "\n"
<< " * Size text buffer: " << DEFAULT_TEXT_BUFFER_SIZE << "\n"
;
}
static const char *suffixes[] = {
_nop("B"), _nop("KiB"), _nop("MiB"), _nop("GiB"), _nop("TiB"), _nop("PiB"), ""
};
#ifdef BUILD_X11
static void X11_create_window(void);
struct _x11_stuff_s {
Region region;
#ifdef BUILD_XDAMAGE
Damage damage;
XserverRegion region2, part;
int event_base, error_base;
#endif
} x11_stuff;
/* text size */
static int text_start_x, text_start_y; /* text start position in window */
static int text_width = 1, text_height = 1; /* initially 1 so no zero-sized window is created */
#endif /* BUILD_X11 */
/* struct that has all info to be shared between
* instances of the same text object */
struct information info;
/* path to config file */
std::string current_config;
/* set to 1 if you want all text to be in uppercase */
static conky::simple_config_setting<bool> stuff_in_uppercase("uppercase", false, true);
/* Run how many times? */
static conky::range_config_setting<unsigned long> total_run_times("total_run_times", 0,
std::numeric_limits<unsigned long>::max(), 0, true);
/* fork? */
static conky::simple_config_setting<bool> fork_to_background("background", false, false);
/* set to 0 after the first time conky is run, so we don't fork again after the
* first forking */
static int first_pass = 1;
conky::range_config_setting<int> cpu_avg_samples("cpu_avg_samples", 1, 14, 2, true);
conky::range_config_setting<int> net_avg_samples("net_avg_samples", 1, 14, 2, true);
conky::range_config_setting<int> diskio_avg_samples("diskio_avg_samples", 1, 14, 2, true);
/* filenames for output */
static conky::simple_config_setting<std::string> overwrite_file("overwrite_file",
std::string(), true);
static FILE *overwrite_fpointer = NULL;
static conky::simple_config_setting<std::string> append_file("append_file",
std::string(), true);
static FILE *append_fpointer = NULL;
#ifdef BUILD_HTTP
std::string webpage;
struct MHD_Daemon *httpd;
static conky::simple_config_setting<bool> http_refresh("http_refresh", false, true);
int sendanswer(void *cls, struct MHD_Connection *connection, const char *url, const char *method, const char *version, const char *upload_data, size_t *upload_data_size, void **con_cls) {
struct MHD_Response *response = MHD_create_response_from_data(webpage.length(), (void*) webpage.c_str(), MHD_NO, MHD_NO);
int ret = MHD_queue_response (connection, MHD_HTTP_OK, response);
MHD_destroy_response(response);
if(cls || url || method || version || upload_data || upload_data_size || con_cls) {} //make compiler happy
return ret;
}
class out_to_http_setting: public conky::simple_config_setting<bool> {
typedef conky::simple_config_setting<bool> Base;
protected:
virtual void lua_setter(lua::state &l, bool init)
{
lua::stack_sentry s(l, -2);
Base::lua_setter(l, init);
if(init && do_convert(l, -1).first) {
httpd = MHD_start_daemon(MHD_USE_SELECT_INTERNALLY, HTTPPORT,
NULL, NULL, &sendanswer, NULL, MHD_OPTION_END);
}
++s;
}
virtual void cleanup(lua::state &l)
{
lua::stack_sentry s(l, -1);
if(do_convert(l, -1).first) {
MHD_stop_daemon(httpd);
httpd = NULL;
}
l.pop();
}
public:
out_to_http_setting()
: Base("out_to_http", false, false)
{}
};
static out_to_http_setting out_to_http;
#endif
#ifdef BUILD_X11
static conky::simple_config_setting<bool> show_graph_scale("show_graph_scale", false, false);
static conky::simple_config_setting<bool> show_graph_range("show_graph_range", false, false);
/* Position on the screen */
static conky::simple_config_setting<int> gap_x("gap_x", 5, true);
static conky::simple_config_setting<int> gap_y("gap_y", 60, true);
/* border */
static conky::simple_config_setting<bool> draw_borders("draw_borders", false, false);
static conky::simple_config_setting<bool> draw_graph_borders("draw_graph_borders", true, false);
conky::range_config_setting<char> stippled_borders("stippled_borders", 0,
std::numeric_limits<char>::max(), 0, true);
static conky::simple_config_setting<bool> draw_shades("draw_shades", true, false);
static conky::simple_config_setting<bool> draw_outline("draw_outline", false, false);
#ifdef OWN_WINDOW
/* fixed size/pos is set if wm/user changes them */
static int fixed_size = 0, fixed_pos = 0;
#endif
static conky::range_config_setting<int> minimum_height("minimum_height", 0,
std::numeric_limits<int>::max(), 5, true);
static conky::range_config_setting<int> minimum_width("minimum_width", 0,
std::numeric_limits<int>::max(), 5, true);
static conky::range_config_setting<int> maximum_width("maximum_width", 0,
std::numeric_limits<int>::max(), 0, true);
static bool isutf8(const char* envvar) {
char *s = getenv(envvar);
if(s) {
std::string temp = s;
std::transform(temp.begin(), temp.end(), temp.begin(), ::tolower);
if( (temp.find("utf-8") != std::string::npos) || (temp.find("utf8") != std::string::npos) ) {
return true;
}
}
return false;
}
/* UTF-8 */
static conky::simple_config_setting<bool> utf8_mode("override_utf8_locale",
isutf8("LC_ALL") || isutf8("LC_CTYPE") || isutf8("LANG"), false);
#endif /* BUILD_X11 */
/* maximum size of config TEXT buffer, i.e. below TEXT line. */
conky::range_config_setting<unsigned int> max_user_text("max_user_text", 47,
std::numeric_limits<unsigned int>::max(), MAX_USER_TEXT_DEFAULT, false);
/* maximum size of individual text buffers, ie $exec buffer size */
conky::range_config_setting<unsigned int> text_buffer_size("text_buffer_size",
DEFAULT_TEXT_BUFFER_SIZE, std::numeric_limits<unsigned int>::max(),
DEFAULT_TEXT_BUFFER_SIZE, false);
/* pad percentages to decimals? */
static conky::simple_config_setting<int> pad_percents("pad_percents", 0, false);
static char *global_text = 0;
char *get_global_text(void)
{
return global_text;
}
long global_text_lines;
static int total_updates;
static int updatereset;
std::unique_ptr<lua::state> state;
void set_updatereset(int i)
{
updatereset = i;
}
int get_updatereset(void)
{
return updatereset;
}
int get_total_updates(void)
{
return total_updates;
}
int calc_text_width(const char *s)
{
size_t slen = strlen(s);
#ifdef BUILD_X11
if (not out_to_x.get(*state)) {
#endif /* BUILD_X11 */
return slen;
#ifdef BUILD_X11
}
#ifdef BUILD_XFT
if (use_xft.get(*state)) {
XGlyphInfo gi;
if (utf8_mode.get(*state)) {
XftTextExtentsUtf8(display, fonts[selected_font].xftfont,
(const FcChar8 *) s, slen, &gi);
} else {
XftTextExtents8(display, fonts[selected_font].xftfont,
(const FcChar8 *) s, slen, &gi);
}
return gi.xOff;
} else
#endif /* BUILD_XFT */
{
return XTextWidth(fonts[selected_font].font, s, slen);
}
#endif /* BUILD_X11 */
}
/* formatted text to render on screen, generated in generate_text(),
* drawn in draw_stuff() */
static char *text_buffer;
/* quite boring functions */
static inline void for_each_line(char *b, int f(char *, int))
{
char *ps, *pe;
int special_index = 0; /* specials index */
if(! b) return;
for (ps = b, pe = b; *pe; pe++) {
if (*pe == '\n') {
*pe = '\0';
special_index = f(ps, special_index);
*pe = '\n';
ps = pe + 1;
}
}
if (ps < pe) {
f(ps, special_index);
}
}
static void convert_escapes(char *buf)
{
char *p = buf, *s = buf;
while (*s) {
if (*s == '\\') {
s++;
if (*s == 'n') {
*p++ = '\n';
} else if (*s == '\\') {
*p++ = '\\';
}
s++;
} else {
*p++ = *s++;
}
}
*p = '\0';
}
/* Prints anything normally printed with snprintf according to the current value
* of use_spacer. Actually slightly more flexible than snprintf, as you can
* safely specify the destination buffer as one of your inputs. */
int spaced_print(char *buf, int size, const char *format, int width, ...)
{
int len = 0;
va_list argp;
char *tempbuf;
if (size < 1) {
return 0;
}
tempbuf = (char*)malloc(size * sizeof(char));
// Passes the varargs along to vsnprintf
va_start(argp, width);
vsnprintf(tempbuf, size, format, argp);
va_end(argp);
switch (use_spacer.get(*state)) {
case NO_SPACER:
len = snprintf(buf, size, "%s", tempbuf);
break;
case LEFT_SPACER:
len = snprintf(buf, size, "%*s", width, tempbuf);
break;
case RIGHT_SPACER:
len = snprintf(buf, size, "%-*s", width, tempbuf);
break;
}
free(tempbuf);
return len;
}
/* print percentage values
*
* - i.e., unsigned values between 0 and 100
* - respect the value of pad_percents */
int percent_print(char *buf, int size, unsigned value)
{
return spaced_print(buf, size, "%u", pad_percents.get(*state), value);
}
#if defined(__FreeBSD__)
unsigned long long llabs(long long num) {
if(num < 0) return -num;
else return num;
}
#endif
/* converts from bytes to human readable format (K, M, G, T)
*
* The algorithm always divides by 1024, as unit-conversion of byte
* counts suggests. But for output length determination we need to
* compare with 1000 here, as we print in decimal form. */
void human_readable(long long num, char *buf, int size)
{
const char **suffix = suffixes;
float fnum;
int precision;
int width;
const char *format;
/* Possibly just output as usual, for example for stdout usage */
if (not format_human_readable.get(*state)) {
spaced_print(buf, size, "%lld", 6, num);
return;
}
if (short_units.get(*state)) {
width = 5;
format = "%.*f%.1s";
} else {
width = 7;
format = "%.*f%-3s";
}
if (llabs(num) < 1000LL) {
spaced_print(buf, size, format, width, 0, (float)num, _(*suffix));
return;
}
while (llabs(num / 1024) >= 1000LL && **(suffix + 2)) {
num /= 1024;
suffix++;
}
suffix++;
fnum = num / 1024.0;
/* fnum should now be < 1000, so looks like 'AAA.BBBBB'
*
* The goal is to always have a significance of 3, by
* adjusting the decimal part of the number. Sample output:
* 123MiB
* 23.4GiB
* 5.12B
* so the point of alignment resides between number and unit. The
* upside of this is that there is minimal padding necessary, though
* there should be a way to make alignment take place at the decimal
* dot (then with fixed width decimal part).
*
* Note the repdigits below: when given a precision value, printf()
* rounds the float to it, not just cuts off the remaining digits. So
* e.g. 99.95 with a precision of 1 gets 100.0, which again should be
* printed with a precision of 0. Yay. */
precision = 0; /* print 100-999 without decimal part */
if (fnum < 99.95)
precision = 1; /* print 10-99 with one decimal place */
if (fnum < 9.995)
precision = 2; /* print 0-9 with two decimal places */
spaced_print(buf, size, format, width, precision, fnum, _(*suffix));
}
/* global object list root element */
static struct text_object global_root_object;
static long current_text_color;
void set_current_text_color(long colour)
{
current_text_color = colour;
}
long get_current_text_color(void)
{
return current_text_color;
}
static void extract_variable_text(const char *p)
{
free_text_objects(&global_root_object);
free_and_zero(tmpstring1);
free_and_zero(tmpstring2);
free_and_zero(text_buffer);
extract_variable_text_internal(&global_root_object, p);
}
void parse_conky_vars(struct text_object *root, const char *txt,
char *p, int p_max_size)
{
extract_variable_text_internal(root, txt);
generate_text_internal(p, p_max_size, *root);
}
/* IFBLOCK jumping algorithm
*
* This is easier as it looks like:
* - each IF checks it's condition
* - on FALSE: jump
* - on TRUE: don't care
* - each ELSE jumps unconditionally
* - each ENDIF is silently being ignored
*
* Why this works (or: how jumping works):
* Jumping means to overwrite the "obj" variable of the loop and set it to the
* target (i.e. the corresponding ELSE or ENDIF). After that, the for-loop does
* the rest: as regularly, "obj" is being updated to point to obj->next, so
* object parsing continues right after the corresponding ELSE or ENDIF. This
* means that if we find an ELSE, it's corresponding IF must not have jumped,
* so we need to jump always. If we encounter an ENDIF, it's corresponding IF
* or ELSE has not jumped, and there is nothing to do.
*/
void generate_text_internal(char *p, int p_max_size, struct text_object root)
{
struct text_object *obj;
size_t a;
if(! p) return;
#ifdef BUILD_ICONV
char *buff_in;
buff_in = (char *)malloc(p_max_size);
memset(buff_in, 0, p_max_size);
#endif /* BUILD_ICONV */
p[0] = 0;
obj = root.next;
while (obj && p_max_size > 0) {
/* check callbacks for existence and act accordingly */
if (obj->callbacks.print) {
(*obj->callbacks.print)(obj, p, p_max_size);
} else if (obj->callbacks.iftest) {
if (!(*obj->callbacks.iftest)(obj)) {
DBGP2("jumping");
if (obj->ifblock_next)
obj = obj->ifblock_next;
}
} else if (obj->callbacks.barval) {
new_bar(obj, p, p_max_size, (*obj->callbacks.barval)(obj));
} else if (obj->callbacks.gaugeval) {
new_gauge(obj, p, p_max_size, (*obj->callbacks.gaugeval)(obj));
#ifdef BUILD_X11
} else if (obj->callbacks.graphval) {
new_graph(obj, p, p_max_size, (*obj->callbacks.graphval)(obj));
#endif /* BUILD_X11 */
} else if (obj->callbacks.percentage) {
percent_print(p, p_max_size, (*obj->callbacks.percentage)(obj));
}
a = strlen(p);
#ifdef BUILD_ICONV
iconv_convert(&a, buff_in, p, p_max_size);
#endif /* BUILD_ICONV */
p += a;
p_max_size -= a;
(*p) = 0;
obj = obj->next;
}
#ifdef BUILD_X11
/* load any new fonts we may have had */
load_fonts(utf8_mode.get(*state));
#endif /* BUILD_X11 */
#ifdef BUILD_ICONV
free(buff_in);
#endif /* BUILD_ICONV */
}
void evaluate(const char *text, char *p, int p_max_size)
{
struct text_object subroot;
parse_conky_vars(&subroot, text, p, p_max_size);
DBGP2("evaluated '%s' to '%s'", text, p);
free_text_objects(&subroot);
}
double current_update_time, next_update_time, last_update_time;
static void generate_text(void)
{
char *p;
unsigned int i, j, k;
special_count = 0;
current_update_time = get_time();
/* clears netstats info, calls conky::run_all_callbacks(), and changes
* some info.mem entries */
update_stuff();
/* populate the text buffer; generate_text_internal() iterates through
* global_root_object (an instance of the text_object struct) and calls
* any callbacks that were set on startup by construct_text_object(). */
p = text_buffer;
generate_text_internal(p, max_user_text.get(*state), global_root_object);
unsigned int mw = max_text_width.get(*state);
unsigned int tbs = text_buffer_size.get(*state);
if(mw > 0) {
for(i = 0, j = 0; p[i] != 0; i++) {
if(p[i] == '\n') j = 0;
else if(j == mw) {
k = i + strlen(p + i) + 1;
if(k < tbs) {
while(k != i) {
p[k] = p[k-1];
k--;
}
p[k] = '\n';
j = 0;
} else NORM_ERR("The end of the text_buffer is reached, increase \"text_buffer_size\"");
} else j++;
}
}
if (stuff_in_uppercase.get(*state)) {
char *tmp_p;
tmp_p = text_buffer;
while (*tmp_p) {
*tmp_p = toupper(*tmp_p);
tmp_p++;
}
}
double ui = active_update_interval();
next_update_time += ui;
if (next_update_time < get_time()) {
next_update_time = get_time() + ui;
} else if (next_update_time > get_time() + ui) {
next_update_time = get_time() + ui;
}
last_update_time = current_update_time;
total_updates++;
}
int get_string_width(const char *s)
{
return *s ? calc_text_width(s) : 0;
}
#ifdef BUILD_X11
static inline int get_border_total()
{
return border_inner_margin.get(*state) + border_outer_margin.get(*state) +
border_width.get(*state);
}
static int get_string_width_special(char *s, int special_index)
{
char *p, *final;
special_t *current = specials;
int idx = 1;
int width = 0;
long i;
if (!s)
return 0;
if (not out_to_x.get(*state))
return strlen(s);
p = strndup(s, text_buffer_size.get(*state));
final = p;
for(i = 0; i < special_index; i++)
current = current->next;
for(i = 0; i < idx; i++)
current = current->next;
while (*p) {
if (*p == SPECIAL_CHAR) {
/* shift everything over by 1 so that the special char
* doesn't mess up the size calculation */
for (i = 0; i < (long)strlen(p); i++) {
*(p + i) = *(p + i + 1);
}
if (current->type == GRAPH
|| current->type == GAUGE
|| current->type == BAR) {
width += current->width;
}
if (current->type == FONT) {
//put all following text until the next fontchange/stringend in influenced_by_font but do not include specials
char *influenced_by_font=strdup(p);
special_t *current_after_font=current;
for(i=0; influenced_by_font[i]!=0; i++) {
if(influenced_by_font[i] == SPECIAL_CHAR) {
//remove specials and stop at fontchange
current_after_font=current_after_font->next;
if(current_after_font->type == FONT) {
influenced_by_font[i]=0;
break;
} else memmove(&influenced_by_font[i], &influenced_by_font[i+1], strlen(&influenced_by_font[i+1]) + 1);
}
}
//add the length of influenced_by_font in the new font to width
int orig_font = selected_font;
selected_font=current->font_added;
width += calc_text_width(influenced_by_font);
selected_font = orig_font;
free(influenced_by_font);
//make sure there chars counted in the new font are not again counted in the old font
int specials_skipped=0;
while(i>0) {
if(p[specials_skipped]!=1) memmove(&p[specials_skipped], &p[specials_skipped+1], strlen(&p[specials_skipped+1]) + 1);
else specials_skipped++;
i--;
}
}
idx++;
current = current->next;
} else {
p++;
}
}
if (strlen(final) > 1) {
width += calc_text_width(final);
}
free(final);
return width;
}
static int text_size_updater(char *s, int special_index);
int last_font_height;
static void update_text_area(void)
{
int x = 0, y = 0;
if (not out_to_x.get(*state))
return;
/* update text size if it isn't fixed */
#ifdef OWN_WINDOW
if (!fixed_size)
#endif
{
text_width = minimum_width.get(*state);
text_height = 0;
last_font_height = font_height();
for_each_line(text_buffer, text_size_updater);
text_width += 1;
if (text_height < minimum_height.get(*state)) {
text_height = minimum_height.get(*state);
}
int mw = maximum_width.get(*state);
if (text_width > mw && mw > 0) {
text_width = mw;
}
}
alignment align = text_alignment.get(*state);
/* get text position on workarea */
switch (align) {
case TOP_LEFT: case TOP_RIGHT: case TOP_MIDDLE:
y = gap_y.get(*state);
break;
case BOTTOM_LEFT: case BOTTOM_RIGHT: case BOTTOM_MIDDLE: default:
y = workarea[3] - text_height - gap_y.get(*state);
break;
case MIDDLE_LEFT: case MIDDLE_RIGHT: case MIDDLE_MIDDLE:
y = workarea[3] / 2 - text_height / 2 - gap_y.get(*state);
break;
}
switch (align) {
case TOP_LEFT: case BOTTOM_LEFT: case MIDDLE_LEFT: default:
x = gap_x.get(*state);
break;
case TOP_RIGHT: case BOTTOM_RIGHT: case MIDDLE_RIGHT:
x = workarea[2] - text_width - gap_x.get(*state);
break;
case TOP_MIDDLE: case BOTTOM_MIDDLE: case MIDDLE_MIDDLE:
x = workarea[2] / 2 - text_width / 2 - gap_x.get(*state);
break;
}
#ifdef OWN_WINDOW
if (align == NONE) { // Let the WM manage the window
x = window.x;
y = window.y;
fixed_pos = 1;
fixed_size = 1;
}
#endif /* OWN_WINDOW */
#ifdef OWN_WINDOW
if (own_window.get(*state) && !fixed_pos) {
x += workarea[0];
y += workarea[1];
int border_total = get_border_total();
text_start_x = text_start_y = border_total;
window.x = x - border_total;
window.y = y - border_total;
} else
#endif
{
/* If window size doesn't match to workarea's size,
* then window probably includes panels (gnome).
* Blah, doesn't work on KDE. */
if (workarea[2] != window.width || workarea[3] != window.height) {
y += workarea[1];
x += workarea[0];
}
text_start_x = x;
text_start_y = y;
}
/* update lua window globals */
llua_update_window_table(text_start_x, text_start_y, text_width, text_height);
}
/* drawing stuff */
static int cur_x, cur_y; /* current x and y for drawing */
#endif
//draw_mode also without BUILD_X11 because we only need to print to stdout with FG
static int draw_mode; /* FG, BG or OUTLINE */
#ifdef BUILD_X11
static long current_color;
static int text_size_updater(char *s, int special_index)
{
int w = 0;
char *p;
special_t *current = specials;
for(int i = 0; i < special_index; i++)
current = current->next;
if (not out_to_x.get(*state))
return 0;
/* get string widths and skip specials */
p = s;
while (*p) {
if (*p == SPECIAL_CHAR) {
*p = '\0';
w += get_string_width(s);
*p = SPECIAL_CHAR;
if (current->type == BAR
|| current->type == GAUGE
|| current->type == GRAPH) {
w += current->width;
if (current->height > last_font_height) {
last_font_height = current->height;
last_font_height += font_height();
}
} else if (current->type == OFFSET) {
if (current->arg > 0) {
w += current->arg;
}
} else if (current->type == VOFFSET) {
last_font_height += current->arg;
} else if (current->type == GOTO) {
if (current->arg > cur_x) {
w = (int) current->arg;
}
} else if (current->type == TAB) {
int start = current->arg;
int step = current->width;
if (!step || step < 0) {
step = 10;
}
w += step - (cur_x - text_start_x - start) % step;
} else if (current->type == FONT) {
selected_font = current->font_added;
if (font_height() > last_font_height) {
last_font_height = font_height();
}
}
special_index++;
current = current->next;
s = p + 1;
}
p++;
}
w += get_string_width(s);
if (w > text_width) {
text_width = w;
}
int mw = maximum_width.get(*state);
if (text_width > mw && mw > 0) {
text_width = mw;
}
text_height += last_font_height;
last_font_height = font_height();
return special_index;
}
#endif /* BUILD_X11 */
static inline void set_foreground_color(long c)
{
#ifdef BUILD_X11
if (out_to_x.get(*state)) {
#ifdef BUILD_ARGB
if (have_argb_visual) {
current_color = c | (own_window_argb_value.get(*state) << 24);
} else {
#endif /* BUILD_ARGB */
current_color = c;
#ifdef BUILD_ARGB
}
#endif /* BUILD_ARGB */
XSetForeground(display, window.gc, current_color);
}
#endif /* BUILD_X11 */
#ifdef BUILD_NCURSES
if (out_to_ncurses.get(*state)) {
attron(COLOR_PAIR(c));
}
#endif /* BUILD_NCURSES */
UNUSED(c);
return;
}
std::string string_replace_all(std::string original, std::string oldpart, std::string newpart, std::string::size_type start) {
std::string::size_type i = start;
int oldpartlen = oldpart.length();
while(1) {
i = original.find(oldpart, i);
if(i == std::string::npos) break;
original.replace(i, oldpartlen, newpart);
}
return original;
}
static void draw_string(const char *s)
{
int i, i2, pos, width_of_s;
int max = 0;
int added;
if (s[0] == '\0') {
return;
}
width_of_s = get_string_width(s);
if (out_to_stdout.get(*state) && draw_mode == FG) {
printf("%s\n", s);
if (extra_newline.get(*state)) fputc('\n', stdout);
fflush(stdout); /* output immediately, don't buffer */
}
if (out_to_stderr.get(*state) && draw_mode == FG) {
fprintf(stderr, "%s\n", s);
fflush(stderr); /* output immediately, don't buffer */
}
if (draw_mode == FG && overwrite_fpointer) {
fprintf(overwrite_fpointer, "%s\n", s);
}
if (draw_mode == FG && append_fpointer) {
fprintf(append_fpointer, "%s\n", s);
}
#ifdef BUILD_NCURSES
if (out_to_ncurses.get(*state) && draw_mode == FG) {
printw("%s", s);
}
#endif
#ifdef BUILD_HTTP
if (out_to_http.get(*state) && draw_mode == FG) {
std::string::size_type origlen = webpage.length();
webpage.append(s);
webpage = string_replace_all(webpage, "\n", "<br />", origlen);
webpage = string_replace_all(webpage, " ", "&nbsp;&nbsp;", origlen);
webpage = string_replace_all(webpage, "&nbsp; ", "&nbsp;&nbsp;", origlen);
webpage.append("<br />");
}
#endif
int tbs = text_buffer_size.get(*state);
memset(tmpstring1, 0, tbs);
memset(tmpstring2, 0, tbs);
strncpy(tmpstring1, s, tbs - 1);
pos = 0;
added = 0;
#ifdef BUILD_X11
if (out_to_x.get(*state)) {
max = ((text_width - width_of_s) / get_string_width(" "));
}
#endif /* BUILD_X11 */
/* This code looks for tabs in the text and coverts them to spaces.
* The trick is getting the correct number of spaces, and not going
* over the window's size without forcing the window larger. */
for (i = 0; i < tbs; i++) {
if (tmpstring1[i] == '\t') {
i2 = 0;
for (i2 = 0; i2 < (8 - (1 + pos) % 8) && added <= max; i2++) {
/* guard against overrun */
tmpstring2[MIN(pos + i2, tbs - 1)] = ' ';
added++;
}
pos += i2;
} else {
/* guard against overrun */
tmpstring2[MIN(pos, tbs - 1)] = tmpstring1[i];
pos++;
}
}
#ifdef BUILD_X11
if (out_to_x.get(*state)) {
int mw = maximum_width.get(*state);
if (text_width == mw) {
/* this means the text is probably pushing the limit,
* so we'll chop it */
while (cur_x + get_string_width(tmpstring2) - text_start_x > mw
&& strlen(tmpstring2) > 0) {
tmpstring2[strlen(tmpstring2) - 1] = '\0';
}
}
}
#endif /* BUILD_X11 */
s = tmpstring2;
#ifdef BUILD_X11
if (out_to_x.get(*state)) {
#ifdef BUILD_XFT
if (use_xft.get(*state)) {
XColor c;
XftColor c2;
c.pixel = current_color;
// query color on custom colormap
XQueryColor(display, window.colourmap, &c);
c2.pixel = c.pixel;
c2.color.red = c.red;
c2.color.green = c.green;
c2.color.blue = c.blue;
c2.color.alpha = fonts[selected_font].font_alpha;
if (utf8_mode.get(*state)) {
XftDrawStringUtf8(window.xftdraw, &c2, fonts[selected_font].xftfont,
cur_x, cur_y, (const XftChar8 *) s, strlen(s));
} else {
XftDrawString8(window.xftdraw, &c2, fonts[selected_font].xftfont,
cur_x, cur_y, (const XftChar8 *) s, strlen(s));
}
} else
#endif
{
if (utf8_mode.get(*state)) {
Xutf8DrawString(display, window.drawable, fonts[selected_font].fontset, window.gc, cur_x, cur_y, s,
strlen(s));
} else {
XDrawString(display, window.drawable, window.gc, cur_x, cur_y, s,
strlen(s));
}
}
cur_x += width_of_s;
}
#endif /* BUILD_X11 */
memcpy(tmpstring1, s, tbs);
}
int draw_each_line_inner(char *s, int special_index, int last_special_applied)
{
#ifdef BUILD_X11
int font_h = 0;
int cur_y_add = 0;
int mw = maximum_width.get(*state);
#endif /* BUILD_X11 */
char *p = s;
int orig_special_index = special_index;
#ifdef BUILD_X11
if (out_to_x.get(*state)) {
font_h = font_height();
cur_y += font_ascent();
}
cur_x = text_start_x;
#endif /* BUILD_X11 */
while (*p) {
if (*p == SPECIAL_CHAR || last_special_applied > -1) {
#ifdef BUILD_X11
int w = 0;
#endif /* BUILD_X11 */
/* draw string before special, unless we're dealing multiline
* specials */
if (last_special_applied > -1) {
special_index = last_special_applied;
} else {
*p = '\0';
draw_string(s);
*p = SPECIAL_CHAR;
s = p + 1;
}
/* draw special */
special_t *current = specials;
for(int i = 0; i < special_index; i++)
current = current->next;
switch (current->type) {
#ifdef BUILD_X11
case HORIZONTAL_LINE:
{
int h = current->height;
int mid = font_ascent() / 2;
w = text_start_x + text_width - cur_x;
XSetLineAttributes(display, window.gc, h, LineSolid,
CapButt, JoinMiter);
XDrawLine(display, window.drawable, window.gc, cur_x,
cur_y - mid / 2, cur_x + w, cur_y - mid / 2);
break;
}
case STIPPLED_HR:
{
int h = current->height;
char tmp_s = current->arg;
int mid = font_ascent() / 2;
char ss[2] = { tmp_s, tmp_s };
w = text_start_x + text_width - cur_x - 1;
XSetLineAttributes(display, window.gc, h, LineOnOffDash,
CapButt, JoinMiter);
XSetDashes(display, window.gc, 0, ss, 2);
XDrawLine(display, window.drawable, window.gc, cur_x,
cur_y - mid / 2, cur_x + w, cur_y - mid / 2);
break;
}
case BAR:
{
int h, by;
double bar_usage, scale;
if (cur_x - text_start_x > mw && mw > 0) {
break;
}
h = current->height;
bar_usage = current->arg;
scale = current->scale;
by = cur_y - (font_ascent() / 2) - 1;
if (h < font_h) {
by -= h / 2 - 1;
}
w = current->width;
if (w == 0) {
w = text_start_x + text_width - cur_x - 1;
}
if (w < 0) {
w = 0;
}
XSetLineAttributes(display, window.gc, 1, LineSolid,
CapButt, JoinMiter);
XDrawRectangle(display, window.drawable, window.gc, cur_x,
by, w, h);
XFillRectangle(display, window.drawable, window.gc, cur_x,
by, w * bar_usage / scale, h);
if (h > cur_y_add
&& h > font_h) {
cur_y_add = h;
}
break;
}
case GAUGE: /* new GAUGE */
{
int h, by = 0;
unsigned long last_colour = current_color;
#ifdef BUILD_MATH
float angle, px, py;
double usage, scale;
#endif /* BUILD_MATH */
if (cur_x - text_start_x > mw && mw > 0) {
break;
}
h = current->height;
by = cur_y - (font_ascent() / 2) - 1;
if (h < font_h) {
by -= h / 2 - 1;
}
w = current->width;
if (w == 0) {
w = text_start_x + text_width - cur_x - 1;
}
if (w < 0) {
w = 0;
}
XSetLineAttributes(display, window.gc, 1, LineSolid,
CapButt, JoinMiter);
XDrawArc(display, window.drawable, window.gc,
cur_x, by, w, h * 2, 0, 180*64);
#ifdef BUILD_MATH
usage = current->arg;
scale = current->scale;
angle = M_PI * usage / scale;
px = (float)(cur_x+(w/2.))-(float)(w/2.)*cos(angle);
py = (float)(by+(h))-(float)(h)*sin(angle);
XDrawLine(display, window.drawable, window.gc,
cur_x + (w/2.), by+(h), (int)(px), (int)(py));
#endif /* BUILD_MATH */
if (h > cur_y_add
&& h > font_h) {
cur_y_add = h;
}
set_foreground_color(last_colour);
break;
}
case GRAPH:
{
int h, by, i = 0, j = 0;
int colour_idx = 0;
unsigned long last_colour = current_color;
if (cur_x - text_start_x > mw && mw > 0) {
break;
}
h = current->height;
by = cur_y - (font_ascent() / 2) - 1;
if (h < font_h) {
by -= h / 2 - 1;
}
w = current->width;
if (w == 0) {
w = text_start_x + text_width - cur_x - 1;
current->graph_width = MAX(w - 1, 0);
if (current->graph_width != current->graph_allocated) {
w = current->graph_allocated + 1;
}
}
if (w < 0) {
w = 0;
}
if (draw_graph_borders.get(*state)) {
XSetLineAttributes(display, window.gc, 1, LineSolid,
CapButt, JoinMiter);
XDrawRectangle(display, window.drawable, window.gc,
cur_x, by, w, h);
}
XSetLineAttributes(display, window.gc, 1, LineSolid,
CapButt, JoinMiter);
/* in case we don't have a graph yet */
if (current->graph) {
unsigned long *tmpcolour = 0;
if (current->last_colour != 0 || current->first_colour != 0) {
tmpcolour = do_gradient(w - 1,
current->last_colour, current->first_colour);
}
colour_idx = 0;
for (i = w - 2; i > -1; i--) {
if (current->last_colour != 0 || current->first_colour != 0) {
if (current->tempgrad) {
#ifdef DEBUG_lol
assert(
(int)((float)(w - 2) - current->graph[j] *
(w - 2) / (float)current->scale)
< w-1
);
assert(
(int)((float)(w - 2) - current->graph[j] *
(w - 2) / (float)current->scale)
> -1
);
if (current->graph[j] == current->scale) {
assert(
(int)((float)(w - 2) - current->graph[j] *
(w - 2) / (float)current->scale)
== 0
);
}
#endif /* DEBUG_lol */
set_foreground_color(tmpcolour[
(int)((float)(w - 2) -
current->graph[j] * (w - 2) /
std::max((float)current->scale, 1.0f))
]);
} else {
set_foreground_color(tmpcolour[colour_idx++]);
}
}
/* this is mugfugly, but it works */
XDrawLine(display, window.drawable, window.gc,
cur_x + i + 1, by + h, cur_x + i + 1,
round_to_int((double)by + h - current->graph[j] *
(h - 1) / current->scale));
++j;
}
free_and_zero(tmpcolour);
}
if (h > cur_y_add
&& h > font_h) {
cur_y_add = h;
}
if (show_graph_range.get(*state)) {
int tmp_x = cur_x;
int tmp_y = cur_y;
unsigned short int seconds = active_update_interval() * w;
char *tmp_day_str;
char *tmp_hour_str;
char *tmp_min_str;
char *tmp_sec_str;
char *tmp_str;
unsigned short int timeunits;
if (seconds != 0) {
timeunits = seconds / 86400; seconds %= 86400;
if (timeunits <= 0 ||
asprintf(&tmp_day_str, _("%dd"), timeunits) == -1) {
tmp_day_str = strdup("");
}
timeunits = seconds / 3600; seconds %= 3600;
if (timeunits <= 0 ||
asprintf(&tmp_hour_str, _("%dh"), timeunits) == -1) {
tmp_hour_str = strdup("");
}
timeunits = seconds / 60; seconds %= 60;
if (timeunits <= 0 ||
asprintf(&tmp_min_str, _("%dm"), timeunits) == -1) {
tmp_min_str = strdup("");
}
if (seconds <= 0 ||
asprintf(&tmp_sec_str, _("%ds"), seconds) == -1) {
tmp_sec_str = strdup("");
}
if (asprintf(&tmp_str, "%s%s%s%s", tmp_day_str, tmp_hour_str, tmp_min_str, tmp_sec_str) == -1)
tmp_str = strdup("");
free(tmp_day_str); free(tmp_hour_str); free(tmp_min_str); free(tmp_sec_str);
} else {
tmp_str = strdup(_("Range not possible")); // should never happen, but better safe then sorry
}
cur_x += (w / 2) - (font_ascent() * (strlen(tmp_str) / 2));
cur_y += font_h / 2;
draw_string(tmp_str);
free(tmp_str);
cur_x = tmp_x;
cur_y = tmp_y;
}
#ifdef BUILD_MATH
if (show_graph_scale.get(*state) && (current->show_scale == 1)) {
int tmp_x = cur_x;
int tmp_y = cur_y;
char *tmp_str;
cur_x += font_ascent() / 2;
cur_y += font_h / 2;
const int tmp_str_len = 64;
tmp_str = (char *) calloc(tmp_str_len, sizeof(char));
sprintf(tmp_str, "%.1f", current->scale);
draw_string(tmp_str);
free(tmp_str);
cur_x = tmp_x;
cur_y = tmp_y;
}
#endif
set_foreground_color(last_colour);
break;
}
case FONT:
{
int old = font_ascent();
cur_y -= font_ascent();
selected_font = current->font_added;
set_font();
if (cur_y + font_ascent() < cur_y + old) {
cur_y += old;
} else {
cur_y += font_ascent();
}
font_h = font_height();
break;
}
#endif /* BUILD_X11 */
case FG:
if (draw_mode == FG) {
set_foreground_color(current->arg);
}
break;
#ifdef BUILD_X11
case BG:
if (draw_mode == BG) {
set_foreground_color(current->arg);
}
break;
case OUTLINE:
if (draw_mode == OUTLINE) {
set_foreground_color(current->arg);
}
break;
case OFFSET:
w += current->arg;
break;
case VOFFSET:
cur_y += current->arg;
break;
case GOTO:
if (current->arg >= 0) {
cur_x = (int) current->arg;
#ifdef BUILD_X11
//make sure shades are 1 pixel to the right of the text
if(draw_mode == BG) cur_x++;
#endif
}
break;
case TAB:
{
int start = current->arg;
int step = current->width;
if (!step || step < 0) {
step = 10;
}
w = step - (cur_x - text_start_x - start) % step;
break;
}
case ALIGNR:
{
/* TODO: add back in "+ window.border_inner_margin" to the end of
* this line? */
int pos_x = text_start_x + text_width -
get_string_width_special(s, special_index);
/* printf("pos_x %i text_start_x %i text_width %i cur_x %i "
"get_string_width(p) %i gap_x %i "
"current->arg %i window.border_inner_margin %i "
"window.border_width %i\n", pos_x, text_start_x, text_width,
cur_x, get_string_width_special(s), gap_x,
current->arg, window.border_inner_margin,
window.border_width); */
if (pos_x > current->arg && pos_x > cur_x) {
cur_x = pos_x - current->arg;
}
break;
}
case ALIGNC:
{
int pos_x = (text_width) / 2 - get_string_width_special(s,
special_index) / 2 - (cur_x -
text_start_x);
/* int pos_x = text_start_x + text_width / 2 -
get_string_width_special(s) / 2; */
/* printf("pos_x %i text_start_x %i text_width %i cur_x %i "
"get_string_width(p) %i gap_x %i "
"current->arg %i\n", pos_x, text_start_x,
text_width, cur_x, get_string_width(s), gap_x,
current->arg); */
if (pos_x > current->arg) {
w = pos_x - current->arg;
}
break;
}
#endif /* BUILD_X11 */
}
#ifdef BUILD_X11
cur_x += w;
#endif /* BUILD_X11 */
if (special_index != last_special_applied) {
special_index++;
} else {
special_index = orig_special_index;
last_special_applied = -1;
}
}
p++;
}
#ifdef BUILD_X11
cur_y += cur_y_add;
#endif /* BUILD_X11 */
draw_string(s);
#ifdef BUILD_NCURSES
if (out_to_ncurses.get(*state)) {
printw("\n");
}
#endif /* BUILD_NCURSES */
#ifdef BUILD_X11
if (out_to_x.get(*state))
cur_y += font_descent();
#endif /* BUILD_X11 */
return special_index;
}
static int draw_line(char *s, int special_index)
{
#ifdef BUILD_X11
if (out_to_x.get(*state)) {
return draw_each_line_inner(s, special_index, -1);
}
#endif /* BUILD_X11 */
#ifdef BUILD_NCURSES
if (out_to_ncurses.get(*state)) {
return draw_each_line_inner(s, special_index, -1);
}
#endif /* BUILD_NCURSES */
draw_string(s);
UNUSED(special_index);
return 0;
}
static void draw_text(void)
{
#ifdef BUILD_HTTP
#define WEBPAGE_START1 "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n<html xmlns=\"http://www.w3.org/1999/xhtml\"><head><meta http-equiv=\"Content-type\" content=\"text/html;charset=UTF-8\" />"
#define WEBPAGE_START2 "<title>Conky</title></head><body style=\"font-family: monospace\"><p>"
#define WEBPAGE_END "</p></body></html>"
if (out_to_http.get(*state)) {
webpage = WEBPAGE_START1;
if(http_refresh.get(*state)) {
webpage.append("<meta http-equiv=\"refresh\" content=\"");
std::stringstream update_interval_str;
update_interval_str << update_interval.get(*state);
webpage.append(update_interval_str.str());
webpage.append("\" />");
}
webpage.append(WEBPAGE_START2);
}
#endif
#ifdef BUILD_X11
if (out_to_x.get(*state)) {
cur_y = text_start_y;
int bw = border_width.get(*state);
/* draw borders */
if (draw_borders.get(*state) && bw > 0) {
if (stippled_borders.get(*state)) {
char ss[2] = { stippled_borders.get(*state), stippled_borders.get(*state) };
XSetLineAttributes(display, window.gc, bw, LineOnOffDash,
CapButt, JoinMiter);
XSetDashes(display, window.gc, 0, ss, 2);
} else {
XSetLineAttributes(display, window.gc, bw, LineSolid,
CapButt, JoinMiter);
}
int offset = border_inner_margin.get(*state) + bw;
XDrawRectangle(display, window.drawable, window.gc,
text_start_x - offset, text_start_y - offset,
text_width + 2*offset, text_height + 2*offset);
}
/* draw text */
}
setup_fonts();
#endif /* BUILD_X11 */
#ifdef BUILD_NCURSES
init_pair(COLOR_WHITE, COLOR_WHITE, COLOR_BLACK);
attron(COLOR_PAIR(COLOR_WHITE));
#endif /* BUILD_NCURSES */
for_each_line(text_buffer, draw_line);
#ifdef BUILD_HTTP
if (out_to_http.get(*state)) {
webpage.append(WEBPAGE_END);
}
#endif
}
static void draw_stuff(void)
{
#ifdef BUILD_IMLIB2
cimlib_render(text_start_x, text_start_y, window.width, window.height);
#endif /* BUILD_IMLIB2 */
if (overwrite_file.get(*state).size()) {
overwrite_fpointer = fopen(overwrite_file.get(*state).c_str(), "w");
if(!overwrite_fpointer)
NORM_ERR("Cannot overwrite '%s'", overwrite_file.get(*state).c_str());
}
if (append_file.get(*state).size()) {
append_fpointer = fopen(append_file.get(*state).c_str(), "a");
if(!append_fpointer)
NORM_ERR("Cannot append to '%s'", append_file.get(*state).c_str());
}
#ifdef BUILD_X11
llua_draw_pre_hook();
if (out_to_x.get(*state)) {
selected_font = 0;
if (draw_shades.get(*state) && !draw_outline.get(*state)) {
text_start_x++;
text_start_y++;
set_foreground_color(default_shade_color.get(*state));
draw_mode = BG;
draw_text();
text_start_x--;
text_start_y--;
}
if (draw_outline.get(*state)) {
int i, j;
selected_font = 0;
for (i = -1; i < 2; i++) {
for (j = -1; j < 2; j++) {
if (i == 0 && j == 0) {
continue;
}
text_start_x += i;
text_start_y += j;
set_foreground_color(default_outline_color.get(*state));
draw_mode = OUTLINE;
draw_text();
text_start_x -= i;
text_start_y -= j;
}
}
}
set_foreground_color(default_color.get(*state));
}
#endif /* BUILD_X11 */
draw_mode = FG;
draw_text();
#if defined(BUILD_X11)
llua_draw_post_hook();
#if defined(BUILD_XDBE)
if (out_to_x.get(*state)) {
xdbe_swap_buffers();
}
#else
if (out_to_x.get(*state)) {
xpmdb_swap_buffers();
}
#endif
#endif /* BUILD_X11 && BUILD_XDBE */
if(overwrite_fpointer) {
fclose(overwrite_fpointer);
overwrite_fpointer = 0;
}
if (append_fpointer) {
fclose(append_fpointer);
append_fpointer = 0;
}
}
#ifdef BUILD_X11
static void clear_text(int exposures)
{
#ifdef BUILD_XDBE
if (use_xdbe.get(*state)) {
/* The swap action is XdbeBackground, which clears */
return;
} else
#else
if (use_xpmdb.get(*state)) {
return;
} else
#endif
if (display && window.window) { // make sure these are !null
/* there is some extra space for borders and outlines */
int border_total = get_border_total();
XClearArea(display, window.window, text_start_x - border_total,
text_start_y - border_total, text_width + 2*border_total,
text_height + 2*border_total, exposures ? True : 0);
}
}
#endif /* BUILD_X11 */
static int need_to_update;
/* update_text() generates new text and clears old text area */
static void update_text(void)
{
#ifdef BUILD_IMLIB2
cimlib_cleanup();
#endif /* BUILD_IMLIB2 */
generate_text();
#ifdef BUILD_X11
if (out_to_x.get(*state))
clear_text(1);
#endif /* BUILD_X11 */
need_to_update = 1;
llua_update_info(&info, active_update_interval());
}
#ifdef HAVE_SYS_INOTIFY_H
int inotify_fd = -1;
#endif
static void main_loop(void)
{
int terminate = 0;
#ifdef SIGNAL_BLOCKING
sigset_t newmask, oldmask;
#endif
double t;
#ifdef HAVE_SYS_INOTIFY_H
int inotify_config_wd = -1;
#define INOTIFY_EVENT_SIZE (sizeof(struct inotify_event))
#define INOTIFY_BUF_LEN (20 * (INOTIFY_EVENT_SIZE + 16)) + 1
char inotify_buff[INOTIFY_BUF_LEN];
#endif /* HAVE_SYS_INOTIFY_H */
#ifdef SIGNAL_BLOCKING
sigemptyset(&newmask);
sigaddset(&newmask, SIGINT);
sigaddset(&newmask, SIGTERM);
sigaddset(&newmask, SIGUSR1);
#endif
last_update_time = 0.0;
next_update_time = get_time();
info.looped = 0;
while (terminate == 0
&& (total_run_times.get(*state) == 0 || info.looped < total_run_times.get(*state))) {
if(update_interval_on_battery.get(*state) != NOBATTERY) {
char buf[64];
get_battery_short_status(buf, 64, "BAT0");
on_battery = (buf[0] == 'D');
}
info.looped++;
#ifdef SIGNAL_BLOCKING
/* block signals. we will inspect for pending signals later */
if (sigprocmask(SIG_BLOCK, &newmask, &oldmask) < 0) {
CRIT_ERR(NULL, NULL, "unable to sigprocmask()");
}
#endif
#ifdef BUILD_X11
if (out_to_x.get(*state)) {
XFlush(display);
/* wait for X event or timeout */
if (!XPending(display)) {
fd_set fdsr;
struct timeval tv;
int s;
t = next_update_time - get_time();
t = std::min(std::max(t, 0.0), active_update_interval());
tv.tv_sec = (long) t;
tv.tv_usec = (long) (t * 1000000) % 1000000;
FD_ZERO(&fdsr);
FD_SET(ConnectionNumber(display), &fdsr);
s = select(ConnectionNumber(display) + 1, &fdsr, 0, 0, &tv);
if (s == -1) {
if (errno != EINTR) {
NORM_ERR("can't select(): %s", strerror(errno));
}
} else {
/* timeout */
if (s == 0) {
update_text();
}
}
}
if (need_to_update) {
#ifdef OWN_WINDOW
int wx = window.x, wy = window.y;
#endif
need_to_update = 0;
selected_font = 0;
update_text_area();
#ifdef OWN_WINDOW
if (own_window.get(*state)) {
int changed = 0;
int border_total = get_border_total();
/* resize window if it isn't right size */
if (!fixed_size
&& (text_width + 2*border_total != window.width
|| text_height + 2*border_total != window.height)) {
window.width = text_width + 2*border_total;
window.height = text_height + 2*border_total;
draw_stuff(); /* redraw everything in our newly sized window */
XResizeWindow(display, window.window, window.width,
window.height); /* resize window */
set_transparent_background(window.window);
#ifdef BUILD_XDBE
/* swap buffers */
xdbe_swap_buffers();
#else
if (use_xpmdb.get(*state)) {
XFreePixmap(display, window.back_buffer);
window.back_buffer = XCreatePixmap(display,
window.window, window.width, window.height, DefaultDepth(display, screen));
if (window.back_buffer != None) {
window.drawable = window.back_buffer;
} else {
// this is probably reallllly bad
NORM_ERR("Failed to allocate back buffer");
}
XSetForeground(display, window.gc, 0);
XFillRectangle(display, window.drawable, window.gc, 0, 0, window.width, window.height);
}
#endif
changed++;
/* update lua window globals */
llua_update_window_table(text_start_x, text_start_y, text_width, text_height);
}
/* move window if it isn't in right position */
if (!fixed_pos && (window.x != wx || window.y != wy)) {
XMoveWindow(display, window.window, window.x, window.y);
changed++;
}
/* update struts */
if (changed && own_window_type.get(*state) == TYPE_PANEL) {
int sidenum = -1;
fprintf(stderr, _(PACKAGE_NAME": defining struts\n"));
fflush(stderr);
switch (text_alignment.get(*state)) {
case TOP_LEFT:
case TOP_RIGHT:
case TOP_MIDDLE:
{
sidenum = 2;
break;
}
case BOTTOM_LEFT:
case BOTTOM_RIGHT:
case BOTTOM_MIDDLE:
{
sidenum = 3;
break;
}
case MIDDLE_LEFT:
{
sidenum = 0;
break;
}
case MIDDLE_RIGHT:
{
sidenum = 1;
break;
}
case NONE: case MIDDLE_MIDDLE: /* XXX What about these? */;
}
set_struts(sidenum);
}
}
#endif
clear_text(1);
#if defined(BUILD_XDBE)
if (use_xdbe.get(*state)) {
#else
if (use_xpmdb.get(*state)) {
#endif
XRectangle r;
int border_total = get_border_total();
r.x = text_start_x - border_total;
r.y = text_start_y - border_total;
r.width = text_width + 2*border_total;
r.height = text_height + 2*border_total;
XUnionRectWithRegion(&r, x11_stuff.region, x11_stuff.region);
}
}
/* handle X events */
while (XPending(display)) {
XEvent ev;
XNextEvent(display, &ev);
switch (ev.type) {
case Expose:
{
XRectangle r;
r.x = ev.xexpose.x;
r.y = ev.xexpose.y;
r.width = ev.xexpose.width;
r.height = ev.xexpose.height;
XUnionRectWithRegion(&r, x11_stuff.region, x11_stuff.region);
break;
}
case PropertyNotify:
{
if ( ev.xproperty.state == PropertyNewValue ) {
get_x11_desktop_info( ev.xproperty.display, ev.xproperty.atom );
}
break;
}
#ifdef OWN_WINDOW
case ReparentNotify:
/* make background transparent */
if (own_window.get(*state)) {
set_transparent_background(window.window);
}
break;
case ConfigureNotify:
if (own_window.get(*state)) {
/* if window size isn't what expected, set fixed size */
if (ev.xconfigure.width != window.width
|| ev.xconfigure.height != window.height) {
if (window.width != 0 && window.height != 0) {
fixed_size = 1;
}
/* clear old stuff before screwing up
* size and pos */
clear_text(1);
{
XWindowAttributes attrs;
if (XGetWindowAttributes(display,
window.window, &attrs)) {
window.width = attrs.width;
window.height = attrs.height;
}
}
int border_total = get_border_total();
text_width = window.width - 2*border_total;
text_height = window.height - 2*border_total;
int mw = maximum_width.get(*state);
if (text_width > mw && mw > 0) {
text_width = mw;
}
}
/* if position isn't what expected, set fixed pos
* total_updates avoids setting fixed_pos when window
* is set to weird locations when started */
/* // this is broken
if (total_updates >= 2 && !fixed_pos
&& (window.x != ev.xconfigure.x
|| window.y != ev.xconfigure.y)
&& (ev.xconfigure.x != 0
|| ev.xconfigure.y != 0)) {
fixed_pos = 1;
} */
}
break;
case ButtonPress:
if (own_window.get(*state)) {
/* if an ordinary window with decorations */
if ((own_window_type.get(*state) == TYPE_NORMAL &&
not TEST_HINT(own_window_hints.get(*state),
HINT_UNDECORATED)) ||
own_window_type.get(*state) == TYPE_DESKTOP) {
/* allow conky to hold input focus. */
break;
} else {
/* forward the click to the desktop window */
XUngrabPointer(display, ev.xbutton.time);
ev.xbutton.window = window.desktop;
ev.xbutton.x = ev.xbutton.x_root;
ev.xbutton.y = ev.xbutton.y_root;
XSendEvent(display, ev.xbutton.window, False,
ButtonPressMask, &ev);
XSetInputFocus(display, ev.xbutton.window,
RevertToParent, ev.xbutton.time);
}
}
break;
case ButtonRelease:
if (own_window.get(*state)) {
/* if an ordinary window with decorations */
if ((own_window_type.get(*state) == TYPE_NORMAL) &&
not TEST_HINT(own_window_hints.get(*state), HINT_UNDECORATED)) {
/* allow conky to hold input focus. */
break;
} else {
/* forward the release to the desktop window */
ev.xbutton.window = window.desktop;
ev.xbutton.x = ev.xbutton.x_root;
ev.xbutton.y = ev.xbutton.y_root;
XSendEvent(display, ev.xbutton.window, False,
ButtonReleaseMask, &ev);
}
}
break;
#endif
default:
#ifdef BUILD_XDAMAGE
if (ev.type == x11_stuff.event_base + XDamageNotify) {
XDamageNotifyEvent *dev = (XDamageNotifyEvent *) &ev;
XFixesSetRegion(display, x11_stuff.part, &dev->area, 1);
XFixesUnionRegion(display, x11_stuff.region2, x11_stuff.region2, x11_stuff.part);
}
#endif /* BUILD_XDAMAGE */
break;
}
}
#ifdef BUILD_XDAMAGE
XDamageSubtract(display, x11_stuff.damage, x11_stuff.region2, None);
XFixesSetRegion(display, x11_stuff.region2, 0, 0);
#endif /* BUILD_XDAMAGE */
/* XDBE doesn't seem to provide a way to clear the back buffer
* without interfering with the front buffer, other than passing
* XdbeBackground to XdbeSwapBuffers. That means that if we're
* using XDBE, we need to redraw the text even if it wasn't part of
* the exposed area. OTOH, if we're not going to call draw_stuff at
* all, then no swap happens and we can safely do nothing. */
if (!XEmptyRegion(x11_stuff.region)) {
#if defined(BUILD_XDBE)
if (use_xdbe.get(*state)) {
#else
if (use_xpmdb.get(*state)) {
#endif
XRectangle r;
int border_total = get_border_total();
r.x = text_start_x - border_total;
r.y = text_start_y - border_total;
r.width = text_width + 2*border_total;
r.height = text_height + 2*border_total;
XUnionRectWithRegion(&r, x11_stuff.region, x11_stuff.region);
}
XSetRegion(display, window.gc, x11_stuff.region);
#ifdef BUILD_XFT
if (use_xft.get(*state)) {
XftDrawSetClip(window.xftdraw, x11_stuff.region);
}
#endif
draw_stuff();
XDestroyRegion(x11_stuff.region);
x11_stuff.region = XCreateRegion();
}
} else {
#endif /* BUILD_X11 */
t = (next_update_time - get_time()) * 1000000;
if(t > 0) usleep((useconds_t)t);
update_text();
draw_stuff();
#ifdef BUILD_NCURSES
if(out_to_ncurses.get(*state)) {
refresh();
clear();
}
#endif
#ifdef BUILD_X11
}
#endif /* BUILD_X11 */
#ifdef SIGNAL_BLOCKING
/* unblock signals of interest and let handler fly */
if (sigprocmask(SIG_SETMASK, &oldmask, NULL) < 0) {
CRIT_ERR(NULL, NULL, "unable to sigprocmask()");
}
#endif
switch (g_signal_pending) {
case SIGHUP:
case SIGUSR1:
NORM_ERR("received SIGHUP or SIGUSR1. reloading the config file.");
reload_config();
break;
case SIGINT:
case SIGTERM:
NORM_ERR("received SIGINT or SIGTERM to terminate. bye!");
terminate = 1;
#ifdef BUILD_X11
if (out_to_x.get(*state)) {
XDestroyRegion(x11_stuff.region);
x11_stuff.region = NULL;
#ifdef BUILD_XDAMAGE
XDamageDestroy(display, x11_stuff.damage);
XFixesDestroyRegion(display, x11_stuff.region2);
XFixesDestroyRegion(display, x11_stuff.part);
#endif /* BUILD_XDAMAGE */
}
#endif /* BUILD_X11 */
break;
default:
/* Reaching here means someone set a signal
* (SIGXXXX, signal_handler), but didn't write any code
* to deal with it.
* If you don't want to handle a signal, don't set a handler on
* it in the first place. */
if (g_signal_pending) {
NORM_ERR("ignoring signal (%d)", g_signal_pending);
}
break;
}
#ifdef HAVE_SYS_INOTIFY_H
if (!disable_auto_reload.get(*state) && inotify_fd != -1
&& inotify_config_wd == -1 && !current_config.empty()) {
inotify_config_wd = inotify_add_watch(inotify_fd,
current_config.c_str(),
IN_MODIFY);
}
if (!disable_auto_reload.get(*state) && inotify_fd != -1
&& inotify_config_wd != -1 && !current_config.empty()) {
int len = 0, idx = 0;
fd_set descriptors;
struct timeval time_to_wait;
FD_ZERO(&descriptors);
FD_SET(inotify_fd, &descriptors);
time_to_wait.tv_sec = time_to_wait.tv_usec = 0;
select(inotify_fd + 1, &descriptors, NULL, NULL, &time_to_wait);
if (FD_ISSET(inotify_fd, &descriptors)) {
/* process inotify events */
len = read(inotify_fd, inotify_buff, INOTIFY_BUF_LEN - 1);
inotify_buff[len] = 0;
while (len > 0 && idx < len) {
struct inotify_event *ev = (struct inotify_event *) &inotify_buff[idx];
if (ev->wd == inotify_config_wd && (ev->mask & IN_MODIFY || ev->mask & IN_IGNORED)) {
/* current_config should be reloaded */
NORM_ERR("'%s' modified, reloading...", current_config.c_str());
reload_config();
if (ev->mask & IN_IGNORED) {
/* for some reason we get IN_IGNORED here
* sometimes, so we need to re-add the watch */
inotify_config_wd = inotify_add_watch(inotify_fd,
current_config.c_str(),
IN_MODIFY);
}
break;
}
else {
llua_inotify_query(ev->wd, ev->mask);
}
idx += INOTIFY_EVENT_SIZE + ev->len;
}
}
} else if (disable_auto_reload.get(*state) && inotify_fd != -1) {
inotify_rm_watch(inotify_fd, inotify_config_wd);
close(inotify_fd);
inotify_fd = inotify_config_wd = -1;
}
#endif /* HAVE_SYS_INOTIFY_H */
llua_update_info(&info, active_update_interval());
g_signal_pending = 0;
}
clean_up(NULL, NULL);
#ifdef HAVE_SYS_INOTIFY_H
if (inotify_fd != -1) {
inotify_rm_watch(inotify_fd, inotify_config_wd);
close(inotify_fd);
inotify_fd = inotify_config_wd = -1;
}
#endif /* HAVE_SYS_INOTIFY_H */
}
void initialisation(int argc, char** argv);
/* reload the config file */
static void reload_config(void)
{
struct stat sb;
if (stat(current_config.c_str(), &sb) || (!S_ISREG(sb.st_mode) && !S_ISLNK(sb.st_mode))) {
NORM_ERR(_("Config file '%s' is gone, continuing with config from memory.\nIf you recreate this file sent me a SIGUSR1 to tell me about it. ( kill -s USR1 %d )"), current_config.c_str(), getpid());
return;
}
clean_up(NULL, NULL);
state.reset(new lua::state);
conky::export_symbols(*state);
sleep(1); /* slight pause */
initialisation(argc_copy, argv_copy);
}
#ifdef BUILD_X11
void clean_up_x11(void)
{
if(window_created == 1) {
int border_total = get_border_total();
XClearArea(display, window.window, text_start_x - border_total,
text_start_y - border_total, text_width + 2*border_total,
text_height + 2*border_total, 0);
}
destroy_window();
free_fonts(utf8_mode.get(*state));
if(x11_stuff.region) {
XDestroyRegion(x11_stuff.region);
x11_stuff.region = NULL;
}
}
#endif
void free_specials(special_t *&current) {
if (current) {
free_specials(current->next);
if(current->type == GRAPH)
free(current->graph);
delete current;
current = NULL;
}
}
void clean_up_without_threads(void *memtofree1, void* memtofree2)
{
free_and_zero(memtofree1);
free_and_zero(memtofree2);
free_and_zero(info.cpu_usage);
#ifdef BUILD_X11
if(out_to_x.get(*state))
clean_up_x11();
else
fonts.clear(); //in set_default_configurations a font is set but not loaded
#endif /* BUILD_X11 */
if (info.first_process) {
free_all_processes();
info.first_process = NULL;
}
free_text_objects(&global_root_object);
free_and_zero(tmpstring1);
free_and_zero(tmpstring2);
free_and_zero(text_buffer);
free_and_zero(global_text);
#ifdef BUILD_PORT_MONITORS
tcp_portmon_clear();
#endif
llua_shutdown_hook();
#if defined BUILD_WEATHER_XOAP || defined BUILD_RSS
xmlCleanupParser();
#endif
free_specials(specials);
clear_net_stats();
clear_diskio_stats();
free_and_zero(global_cpu);
conky::cleanup_config_settings(*state);
state.reset();
}
void clean_up(void *memtofree1, void* memtofree2)
{
/* free_update_callbacks(); XXX: some new equivalent of this? */
clean_up_without_threads(memtofree1, memtofree2);
}
static void set_default_configurations(void)
{
update_uname();
info.memmax = 0;
top_cpu = 0;
top_mem = 0;
top_time = 0;
#ifdef BUILD_IOSTATS
top_io = 0;
#endif
top_running = 0;
#ifdef BUILD_XMMS2
info.xmms2.artist = NULL;
info.xmms2.album = NULL;
info.xmms2.title = NULL;
info.xmms2.genre = NULL;
info.xmms2.comment = NULL;
info.xmms2.url = NULL;
info.xmms2.status = NULL;
info.xmms2.playlist = NULL;
#endif /* BUILD_XMMS2 */
state->pushboolean(true);
#ifdef BUILD_X11
out_to_x.lua_set(*state);
#else
out_to_stdout.lua_set(*state);
#endif
info.users.number = 1;
}
#ifdef BUILD_X11
static void X11_create_window(void)
{
if (out_to_x.get(*state)) {
setup_fonts();
load_fonts(utf8_mode.get(*state));
update_text_area(); /* to position text/window on screen */
#ifdef OWN_WINDOW
if (own_window.get(*state)) {
if (not fixed_pos)
XMoveWindow(display, window.window, window.x, window.y);
set_transparent_background(window.window);
}
#endif
create_gc();
draw_stuff();
x11_stuff.region = XCreateRegion();
#ifdef BUILD_XDAMAGE
if (!XDamageQueryExtension(display, &x11_stuff.event_base, &x11_stuff.error_base)) {
NORM_ERR("Xdamage extension unavailable");
}
x11_stuff.damage = XDamageCreate(display, window.window, XDamageReportNonEmpty);
x11_stuff.region2 = XFixesCreateRegionFromWindow(display, window.window, 0);
x11_stuff.part = XFixesCreateRegionFromWindow(display, window.window, 0);
#endif /* BUILD_XDAMAGE */
selected_font = 0;
update_text_area(); /* to get initial size of the window */
}
/* setup lua window globals */
llua_setup_window_table(text_start_x, text_start_y, text_width, text_height);
}
#endif /* BUILD_X11 */
void load_config_file()
{
DBGP(_("reading contents from config file '%s'"), current_config.c_str());
lua::state &l = *state;
lua::stack_sentry s(l);
l.checkstack(2);
try {
#ifdef BUILD_BUILTIN_CONFIG
if(current_config == builtin_config_magic)
l.loadstring(defconfig);
else
#endif
l.loadfile(current_config.c_str());
}
catch(lua::syntax_error &e) {
#define SYNTAX_ERR_READ_CONF "Syntax error (%s) while reading config file. "
#ifdef BUILD_OLD_CONFIG
NORM_ERR(_(SYNTAX_ERR_READ_CONF), e.what());
NORM_ERR(_("Assuming it's in old syntax and attempting conversion."));
// the strchr thingy skips the first line (#! /usr/bin/lua)
l.loadstring(strchr(convertconf, '\n'));
l.pushstring(current_config.c_str());
l.call(1, 1);
#else
char *syntaxerr;
asprintf(&syntaxerr, _(SYNTAX_ERR_READ_CONF), e.what());
std::string syntaxerrobj(syntaxerr);
free(syntaxerr);
throw conky::error(syntaxerrobj);
#endif
}
l.call(0, 0);
l.getglobal("conky");
l.getfield(-1, "text");
l.replace(-2);
if(l.type(-1) != lua::TSTRING)
throw conky::error(_("missing text block in configuration"));
/* Remove \\-\n. */
l.gsub(l.tocstring(-1), "\\\n", "");
l.replace(-2);
global_text = strdup(l.tocstring(-1));
l.pop();
// XXX: what does this do?
// global_text_lines = line + 1;
#if 0
#if defined(BUILD_NCURSES)
#if defined(BUILD_X11)
if (out_to_x.get(*state) && out_to_ncurses.get(*state)) {
NORM_ERR("out_to_x and out_to_ncurses are incompatible, turning out_to_ncurses off");
state->pushboolean(false);
out_to_ncurses.lua_set(*state);
}
#endif /* BUILD_X11 */
if ((out_to_stdout.get(*state) || out_to_stderr.get(*state))
&& out_to_ncurses.get(*state)) {
NORM_ERR("out_to_ncurses conflicts with out_to_console and out_to_stderr, disabling the later ones");
// XXX: this will need some rethinking
state->pushboolean(false);
out_to_stdout.lua_set(*state);
state->pushboolean(false);
out_to_stderr.lua_set(*state);
}
#endif /* BUILD_NCURSES */
#endif
}
static void print_help(const char *prog_name) {
printf("Usage: %s [OPTION]...\n"
PACKAGE_NAME " is a system monitor that renders text on desktop or to own transparent\n"
"window. Command line options will override configurations defined in config\n"
"file.\n"
" -v, --version version\n"
" -q, --quiet quiet mode\n"
" -D, --debug increase debugging output, ie. -DD for more debugging\n"
" -c, --config=FILE config file to load\n"
#ifdef BUILD_BUILTIN_CONFIG
" -C, --print-config print the builtin default config to stdout\n"
" e.g. 'conky -C > ~/.conkyrc' will create a new default config\n"
#endif
" -d, --daemonize daemonize, fork to background\n"
" -h, --help help\n"
#ifdef BUILD_X11
" -a, --alignment=ALIGNMENT text alignment on screen, {top,bottom,middle}_{left,right,middle}\n"
" -f, --font=FONT font to use\n"
" -X, --display=DISPLAY X11 display to use\n"
#ifdef OWN_WINDOW
" -o, --own-window create own window to draw\n"
#endif
" -b, --double-buffer double buffer (prevents flickering)\n"
" -w, --window-id=WIN_ID window id to draw\n"
" -x X x position\n"
" -y Y y position\n"
#endif /* BUILD_X11 */
" -t, --text=TEXT text to render, remember single quotes, like -t '$uptime'\n"
" -u, --interval=SECS update interval\n"
" -i COUNT number of times to update " PACKAGE_NAME " (and quit)\n"
" -p, --pause=SECS pause for SECS seconds at startup before doing anything\n",
prog_name
);
}
inline void reset_optind() {
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__OpenBSD__) \
|| defined(__NetBSD__) || defined(__DragonFly__)
optind = optreset = 1;
#else
optind = 0;
#endif
}
/* : means that character before that takes an argument */
static const char *getopt_string = "vVqdDSs:t:u:i:hc:p:"
#ifdef BUILD_X11
"x:y:w:a:f:X:"
#ifdef OWN_WINDOW
"o"
#endif
"b"
#endif /* BUILD_X11 */
#ifdef BUILD_BUILTIN_CONFIG
"C"
#endif
;
static const struct option longopts[] = {
{ "help", 0, NULL, 'h' },
{ "version", 0, NULL, 'V' },
{ "quiet", 0, NULL, 'q' },
{ "debug", 0, NULL, 'D' },
{ "config", 1, NULL, 'c' },
#ifdef BUILD_BUILTIN_CONFIG
{ "print-config", 0, NULL, 'C' },
#endif
{ "daemonize", 0, NULL, 'd' },
#ifdef BUILD_X11
{ "alignment", 1, NULL, 'a' },
{ "font", 1, NULL, 'f' },
{ "display", 1, NULL, 'X' },
#ifdef OWN_WINDOW
{ "own-window", 0, NULL, 'o' },
#endif
{ "double-buffer", 0, NULL, 'b' },
{ "window-id", 1, NULL, 'w' },
#endif /* BUILD_X11 */
{ "text", 1, NULL, 't' },
{ "interval", 1, NULL, 'u' },
{ "pause", 1, NULL, 'p' },
{ 0, 0, 0, 0 }
};
void set_current_config() {
/* load current_config, CONFIG_FILE or SYSTEM_CONFIG_FILE */
struct stat s;
if (current_config.empty()) {
/* Try to use personal config file first */
std::string buf = to_real_path(XDG_CONFIG_FILE);
if (stat(buf.c_str(), &s) == 0)
current_config = buf;
}
if (current_config.empty()) {
/* Try to use personal config file first */
std::string buf = to_real_path(CONFIG_FILE);
if (stat(buf.c_str(), &s) == 0)
current_config = buf;
}
/* Try to use system config file if personal config does not exist */
if (current_config.empty() && (stat(SYSTEM_CONFIG_FILE, &s)==0))
current_config = SYSTEM_CONFIG_FILE;
/* No readable config found */
if (current_config.empty()) {
#define NOCFGFILEFOUND "no personal or system-wide config file found"
#ifdef BUILD_BUILTIN_CONFIG
current_config = builtin_config_magic;
NORM_ERR(NOCFGFILEFOUND ", using builtin default");
#else
throw conky::error(NOCFGFILEFOUND);
#endif
}
// "-" stands for "read from stdin"
if(current_config == "-")
current_config = "/dev/stdin";
}
void initialisation(int argc, char **argv) {
struct sigaction act, oact;
clear_net_stats();
set_default_configurations();
set_current_config();
load_config_file();
/* handle other command line arguments */
reset_optind();
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
if ((kd = kvm_open("/dev/null", "/dev/null", "/dev/null", O_RDONLY,
"kvm_open")) == NULL) {
CRIT_ERR(NULL, NULL, "cannot read kvm");
}
#endif
while (1) {
int c = getopt_long(argc, argv, getopt_string, longopts, NULL);
int startup_pause;
char *conv_end;
if (c == -1) {
break;
}
switch (c) {
case 'd':
state->pushboolean(true);
fork_to_background.lua_set(*state);
break;
#ifdef BUILD_X11
case 'f':
state->pushstring(optarg);
font.lua_set(*state);
break;
case 'a':
state->pushstring(optarg);
text_alignment.lua_set(*state);
break;
case 'X':
state->pushstring(optarg);
display_name.lua_set(*state);
break;
#ifdef OWN_WINDOW
case 'o':
state->pushboolean(true);
own_window.lua_set(*state);
break;
#endif
#ifdef BUILD_XDBE
case 'b':
state->pushboolean(true);
use_xdbe.lua_set(*state);
break;
#else
case 'b':
state->pushboolean(true);
use_xpmdb.lua_set(*state);
break;
#endif
#endif /* BUILD_X11 */
case 't':
free_and_zero(global_text);
global_text = strndup(optarg, max_user_text.get(*state));
convert_escapes(global_text);
break;
case 'u':
state->pushinteger(strtol(optarg, &conv_end, 10));
if(*conv_end != 0) { CRIT_ERR(NULL, NULL, "'%s' is a wrong update-interval", optarg); }
update_interval.lua_set(*state);
break;
case 'i':
state->pushinteger(strtol(optarg, &conv_end, 10));
if(*conv_end != 0) { CRIT_ERR(NULL, NULL, "'%s' is a wrong number of update-times", optarg); }
total_run_times.lua_set(*state);
break;
#ifdef BUILD_X11
case 'x':
state->pushinteger(strtol(optarg, &conv_end, 10));
if(*conv_end != 0) { CRIT_ERR(NULL, NULL, "'%s' is a wrong value for the X-position", optarg); }
gap_x.lua_set(*state);
break;
case 'y':
state->pushinteger(strtol(optarg, &conv_end, 10));
if(*conv_end != 0) { CRIT_ERR(NULL, NULL, "'%s' is a wrong value for the Y-position", optarg); }
gap_y.lua_set(*state);
break;
#endif /* BUILD_X11 */
case 'p':
if (first_pass) {
startup_pause = atoi(optarg);
sleep(startup_pause);
}
break;
case '?':
throw unknown_arg_throw();
}
}
conky::set_config_settings(*state);
#ifdef BUILD_X11
if(out_to_x.get(*state)) {
current_text_color = default_color.get(*state);
}
#endif
/* generate text and get initial size */
extract_variable_text(global_text);
free_and_zero(global_text);
/* fork */
if (fork_to_background.get(*state) && first_pass) {
int pid = fork();
switch (pid) {
case -1:
NORM_ERR(PACKAGE_NAME": couldn't fork() to background: %s",
strerror(errno));
break;
case 0:
/* child process */
usleep(25000);
fprintf(stderr, "\n");
fflush(stderr);
break;
default:
/* parent process */
fprintf(stderr, PACKAGE_NAME": forked to background, pid is %d\n",
pid);
fflush(stderr);
throw fork_throw();
}
}
text_buffer = (char*)malloc(max_user_text.get(*state));
memset(text_buffer, 0, max_user_text.get(*state));
tmpstring1 = (char*)malloc(text_buffer_size.get(*state));
memset(tmpstring1, 0, text_buffer_size.get(*state));
tmpstring2 = (char*)malloc(text_buffer_size.get(*state));
memset(tmpstring2, 0, text_buffer_size.get(*state));
#ifdef BUILD_X11
X11_create_window();
#endif /* BUILD_X11 */
llua_setup_info(&info, active_update_interval());
#ifdef BUILD_WEATHER_XOAP
xmlInitParser();
#endif /* BUILD_WEATHER_XOAP */
/* Set signal handlers */
act.sa_handler = signal_handler;
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
#ifdef SA_RESTART
act.sa_flags |= SA_RESTART;
#endif
if ( sigaction(SIGINT, &act, &oact) < 0
|| sigaction(SIGALRM, &act, &oact) < 0
|| sigaction(SIGUSR1, &act, &oact) < 0
|| sigaction(SIGHUP, &act, &oact) < 0
|| sigaction(SIGTERM, &act, &oact) < 0) {
NORM_ERR("error setting signal handler: %s", strerror(errno));
}
llua_startup_hook();
}
int main(int argc, char **argv)
{
#ifdef BUILD_I18N
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE_NAME, LOCALE_DIR);
textdomain(PACKAGE_NAME);
#endif
argc_copy = argc;
argv_copy = argv;
g_signal_pending = 0;
#ifdef BUILD_CURL
struct curl_global_initializer {
curl_global_initializer()
{
if(curl_global_init(CURL_GLOBAL_ALL))
NORM_ERR("curl_global_init() failed, you may not be able to use curl variables");
}
~curl_global_initializer()
{ curl_global_cleanup(); }
};
curl_global_initializer curl_global;
#endif
/* handle command line parameters that don't change configs */
#ifdef BUILD_X11
if (!setlocale(LC_CTYPE, "")) {
NORM_ERR("Can't set the specified locale!\nCheck LANG, LC_CTYPE, LC_ALL.");
}
#endif /* BUILD_X11 */
while (1) {
int c = getopt_long(argc, argv, getopt_string, longopts, NULL);
if (c == -1) {
break;
}
switch (c) {
case 'D':
global_debug_level++;
break;
case 'v':
case 'V':
print_version();
return EXIT_SUCCESS;
case 'c':
current_config = optarg;
break;
case 'q':
if (!freopen("/dev/null", "w", stderr))
CRIT_ERR(0, 0, "could not open /dev/null as stderr!");
break;
case 'h':
print_help(argv[0]);
return 0;
#ifdef BUILD_BUILTIN_CONFIG
case 'C':
std::cout << defconfig;
return 0;
#endif
#ifdef BUILD_X11
case 'w':
window.window = strtol(optarg, 0, 0);
break;
#endif /* BUILD_X11 */
case '?':
return EXIT_FAILURE;
}
}
try {
set_current_config();
state.reset(new lua::state);
conky::export_symbols(*state);
#ifdef BUILD_WEATHER_XOAP
/* Load xoap keys, if existing */
load_xoap_keys();
#endif /* BUILD_WEATHER_XOAP */
#ifdef HAVE_SYS_INOTIFY_H
// the file descriptor will be automatically closed on exit
inotify_fd = inotify_init();
if(inotify_fd != -1) {
fcntl(inotify_fd, F_SETFL, fcntl(inotify_fd, F_GETFL) | O_NONBLOCK);
fcntl(inotify_fd, F_SETFD, fcntl(inotify_fd, F_GETFD) | FD_CLOEXEC);
}
#endif /* HAVE_SYS_INOTIFY_H */
initialisation(argc, argv);
first_pass = 0; /* don't ever call fork() again */
main_loop();
}
catch(fork_throw &e) { return EXIT_SUCCESS; }
catch(unknown_arg_throw &e) { return EXIT_FAILURE; }
catch(obj_create_error &e) {
std::cerr << e.what() << std::endl;
clean_up(NULL, NULL);
return EXIT_FAILURE;
}
catch(std::exception &e) {
std::cerr << PACKAGE_NAME": " << e.what() << std::endl;
return EXIT_FAILURE;
}
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
kvm_close(kd);
#endif
#ifdef LEAKFREE_NCURSES
_nc_free_and_exit(0); //hide false memleaks
#endif
return 0;
}
static void signal_handler(int sig)
{
/* signal handler is light as a feather, as it should be.
* we will poll g_signal_pending with each loop of conky
* and do any signal processing there, NOT here */
g_signal_pending = sig;
}
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