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Alexander Rosenberg 2022-08-28 14:27:03 -07:00
commit 3810e65cb5
Signed by: Zander671
GPG Key ID: 5FD0394ADBD72730
28 changed files with 2540 additions and 0 deletions
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BasedOnStyle: LLVM
IndentWidth: 4
UseTab: Never
BreakBeforeBraces: Attach
AllowShortBlocksOnASingleLine: Never
AllowShortCaseLabelsOnASingleLine: false
AllowShortFunctionsOnASingleLine: false
AllowShortIfStatementsOnASingleLine: Never
AllowShortLambdasOnASingleLine: false
AlwaysBreakTemplateDeclarations: Yes
AllowShortLoopsOnASingleLine: false
AlwaysBreakAfterReturnType: None
IndentCaseLabels: false

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((nil . ((projectile-project-configure-cmd . "cmake -B build -S .")
(projectile-project-compilation-cmd . "cmake --build build")
(projectile-project-run-cmd . "build/quick-text-bar"))))

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build/
compile_commands.json
config.h
config.cmake

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# --- INTERNAL STUFF ---
cmake_minimum_required(VERSION 3.1.0)
if (NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/config.h")
configure_file(config.h.in "${CMAKE_CURRENT_SOURCE_DIR}/config.h")
endif()
configure_file(quick-text-bar.1.in quick-text-bar.1)
include(config.cmake.default)
include(config.cmake OPTIONAL)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
set(CMAKE_C_STANDARD 99)
set(THREADS_PREFER_PTHREAD_FLAG ON)
include(GNUInstallDirs)
project(quick-text-bar)
if(EXTRA_FLAGS)
list(JOIN EXTRA_FLAGS " " EXTRA_FLAGS_STRING)
message("Building with extra flags: ${EXTRA_FLAGS_STRING}")
endif()
find_package(Threads REQUIRED)
find_package(PkgConfig REQUIRED)
if(EXTRA_PACKAGES)
pkg_check_modules(USER REQUIRED ${EXTRA_PACKAGES})
include_directories(${USER_INCLUDE_DIRS})
link_directories(${USER_LIBRARY_DIRS})
add_definitions(${USER_CFLAGS_OTHER})
list(APPEND EXTRA_LIBRARIES ${USER_LIBRARIES})
endif()
if(USE_X)
pkg_check_modules(X11 REQUIRED x11)
include_directories(${X11_INCLUDE_DIRS})
link_directories(${X11_LIBRARY_DIRS})
add_definitions(${X11_CFLAGS_OTHER})
add_compile_definitions(HAS_X11)
list(APPEND EXTRA_LIBRARIES ${X11_LIBRARIES})
endif()
list(LENGTH MODULE_NAMES MODULE_COUNT)
if(MODULE_COUNT EQUAL 0)
message(FATAL_ERROR "No modules defined!")
endif()
foreach(module_name ${MODULE_NAMES})
string(FIND "${module_name}" "/" sep_index)
if(NOT sep_index EQUAL -1)
set(module_path "${module_name}")
else()
set(module_path "${MODULE_DIRECTORY}${module_name}")
endif()
message("Found module: ${module_path}")
list(APPEND MODULE_SOURCE_FILES "${module_path}")
endforeach()
add_compile_definitions(QTB_VERSION="${QTB_VERSION}")
add_definitions(${EXTRA_FLAGS})
add_executable(quick-text-bar main.c ${MODULE_SOURCE_FILES} ${EXTRA_SOURCE_FILES})
target_link_libraries(quick-text-bar PRIVATE Threads::Threads m ${EXTRA_LIBRARIES})
install(TARGETS quick-text-bar)
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/quick-text-bar.1" DESTINATION "${CMAKE_INSTALL_MANDIR}/man1")

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THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
Quick Dwm Bar
Copyright (C) 2021 Alexander Rosenberg
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 <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) 2021 Alexander Rosenberg
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

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# Quick Text Bar
A fast and customizable text based bar for use with programs such as dwm.

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# Change these to fit your needs
# Default path to search for modules
set(MODULE_DIRECTORY "modules/")
# Modules to add to build
# Linux
set(MODULE_NAMES "fcitx4.c" "time.c" "pulse.c" "linuxnm.c" "battery.c" "bluetooth.c" "optimus.c")
# FreeBSD
#set(MODULE_NAMES "fcitx4.c" "time.c" "oss.c")
# Non-module files to add to build
set(EXTRA_SOURCE_FILES)
# Extra flags to pass to compiler or linker
set(EXTRA_FLAGS)
# Modules to search for and add with pkg-config
# Linux
set(EXTRA_PACKAGES "libpulse" "libnm" "gio-2.0" "gio-unix-2.0")
# FreeBSD
#set(EXTRA_PACKAGES "gio-2.0" "gio-unix-2.0")
# Set to false to build without x11
set(USE_X TRUE)
# Version String
set(QTB_VERSION "1.0.0")

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/* text pre-pended to the bar */
#define PREFIX_TEXT ""
/* text appended to the bar */
#define SUFFIX_TEXT ""
/* the seperator between modules */
#define SEPERATOR_TEXT " "
/* if TRUE, default to setting the root window title,
otherwise, default to writing to stdout */
#define DEFAULT_SET_ROOT_TITLE FALSE
/* minimum time between polling modules for updates.
If commented out, this program will find a good value */
/* #define REFRESH_TIME MILISECONDS(10) */
/* include your custom modules here!
look at util.h to see which functions are available */
#include "modules/time.h"
#include "modules/pulse.h"
/* #include "modules/oss.h" */
#include "modules/linuxnm.h"
#include "modules/fcitx4.h"
#include "modules/battery.h"
#include "modules/bluetooth.h"
#include "modules/optimus.h"
/* once you have written a module in its own file, you need to
define it here. A description of each property follows
- name: the name to idenfity this module in error messages and -i output
- init function: function to be run at the start of this program.
It should return NULL if it suceeded and an error message
if it failed.
- poll function: function to run every poll. A char ** is passed as an argument
and should be set the the functions output. It should return null
if it suceeded and an error message if it failed.
- time: how long to wait between each poll of this module. Should be one of:
MILISECONDS(t), SECCONDS(t), MINUTES(t), HOURS(t), or NO_REFRESH
- signal: when this program receives SIGRTMIN+signal, it will poll modules
with a matching signal and then refresh the bar. NO_SIGNAL will disable
this feature for a given module. */
struct BarModule modules[] = {
/* name init function poll function time signal */
{ "battery", &battery_module_init, &battery_module_poll, SECONDS(1), 2 },
{ "optimus", &optimus_module_init, &optimus_module_poll, NO_REFRESH, NO_SIGNAL },
{ "fcitx4", &fcitx4_module_init, &fcitx4_module_poll, NO_REFRESH, 3 },
{ "pulse", &pulse_module_init, &pulse_module_poll, NO_REFRESH, 1 },
/* { "oss", &oss_module_init, &oss_module_poll, MILISECONDS(250), NO_SIGNAL }, */
{ "time", NULL, &time_module_poll, MILISECONDS(500), NO_SIGNAL },
{ "linuxnm", &linuxnm_module_init, &linuxnm_module_poll, NO_REFRESH, 2 },
{ "bluetooth", &bluetooth_module_init, &bluetooth_module_poll, NO_REFRESH, 4 }
};

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#include <ctype.h>
#include <math.h>
#include <pthread.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>
#ifdef HAS_X11
#include <X11/Xlib.h>
#endif
#define FALSE 0
#define TRUE 1
#define NO_REFRESH 0
#define NO_SIGNAL 0
#define MILISECONDS(t) (t)
#define SECONDS(t) (t * 1000)
#define MINUTES(t) (SECONDS(t) * 60)
#define HOURS(t) (MINUTES(t) * 60)
struct BarModule {
const char *name;
void (*init)(void);
char *(*poll)(void);
const unsigned long refresh_time;
const int signal;
unsigned long last_refresh;
char *last_text;
size_t last_text_length;
int disabled;
};
#include "config.h"
typedef int error_code;
#define ERROR_NONE 0
#define ERROR_UNKNOWN 1
#define ERROR_ARG 2
#define ERROR_MEMORY 3
#define ERROR_MODULE 4
#define ERROR_CONFIG 5
#define ERROR_X11 6
typedef int arg_action;
#define ARG_ACTION_NONE 0
#define ARG_ACTION_CONTINUE 1
#define ARG_ACTION_STOP 2
#define ARG_ACTION_SKIP 3
static const size_t global_prefix_length = sizeof(PREFIX_TEXT) - 1;
static const size_t global_suffix_length = sizeof(SUFFIX_TEXT) - 1;
static const size_t global_seperator_length = sizeof(SEPERATOR_TEXT) - 1;
static const size_t global_module_count =
sizeof(modules) / sizeof(struct BarModule);
static size_t global_disabled_module_count = 0;
static int global_interpret_flags = TRUE;
static error_code global_last_error = ERROR_NONE;
static const char *global_exec_name;
static struct timespec global_refresh_time;
static clockid_t global_cpu_clock_id;
static unsigned long global_last_refresh;
static pthread_t global_main_thread;
static sigset_t global_real_time_mask;
#ifdef HAS_X11
static Display *global_x_display;
static int global_x_screen;
static Window global_x_root;
static const char *flag_x_display_name;
#elif DEFAULT_SET_ROOT_TITLE != FALSE
#error "DEFAULT_SET_ROOT_TITLE can't be TRUE unless X11 support is included"
#endif
static int flag_print_version = FALSE;
static int flag_print_help = FALSE;
static int flag_print_info = FALSE;
static int flag_set_root_title = DEFAULT_SET_ROOT_TITLE;
static int flag_write_to_stdout = !DEFAULT_SET_ROOT_TITLE;
/* internal function declarations */
static void qtb_exit(void);
static void qtb_exit_with_status(error_code status);
static void check_config(void);
static const char *check_arg_value(char arg, const char *value,
arg_action current_action);
static void set_disabled_modules(const char *arg);
static arg_action interpret_flag_character(char arg, const char *next,
arg_action current_action);
static arg_action interpret_flag_arg(const char *arg, const char *next);
static arg_action interpret_normal_arg(const char *arg, const char *next);
static void interpret_args(int argc, const char **argv);
static void print_flag_error(char arg);
static void print_arg_error(const char *arg);
static void print_help_and_exit(void);
static void print_version_and_exit(void);
static void print_info_and_exit(void);
static unsigned long find_gcf(unsigned long *nums, size_t len);
static unsigned long *find_prime_factors(unsigned long n, size_t *out_len);
static void initialize_modules(void);
static void set_refresh_time(void);
static void signal_handler(int signum);
static void setup_signals(void);
static unsigned long find_module_refresh_gcf(void);
static unsigned long timespec_to_miliseconds(struct timespec *ts);
static void miliseconds_to_timespec(unsigned long ms, struct timespec *out_ts);
static void do_initial_refresh(void);
static void refresh_module(struct BarModule *module);
static int check_and_refresh_module(struct BarModule *module,
unsigned long current_time);
static void module_poll_loop(void);
static void rewrite_bar(void);
static void timespec_diff(const struct timespec *start,
const struct timespec *end, struct timespec *out);
static void init_x(void);
static void set_x_root_title(const char *title);
/* module api functions */
void _qtb_internal_log(const char *fmt, ...);
#define qtb_log(...) _qtb_internal_log(__VA_ARGS__)
void qtb_die(void);
void qtb_signal_modules(int sig);
static char *read_file(int fd);
static int handle_execute_parent(pid_t pid, int child_in, int child_out,
int child_err, const char *in,
const char **out, const char **err);
static void handle_execute_child(const char *name, const char **argv, int in,
int out, int err);
void *qtb_malloc(size_t size);
static int is_overflow(size_t n1, size_t n2);
void *qtb_calloc(size_t n, size_t size);
void *qtb_realloc(void *ptr, size_t size);
char *qtb_strdup(const char *str);
void qtb_free(void *ptr);
#ifdef HAS_X11
Display *qtb_get_x_display(void);
#endif
/* function definitions */
int main(int argc, const char **argv) {
global_exec_name = argv[0];
global_main_thread = pthread_self();
check_config();
interpret_args(argc, argv);
if (flag_print_help) {
print_help_and_exit();
} else if (flag_print_version) {
print_version_and_exit();
} else if (flag_print_info) {
print_info_and_exit();
} else if (global_disabled_module_count == global_module_count) {
qtb_log("all modules disabled! exiting...");
qtb_exit_with_status(ERROR_ARG);
} else if (global_last_error != ERROR_NONE) {
qtb_exit();
}
if (clock_getcpuclockid(0, &global_cpu_clock_id) != 0) {
qtb_log("error: could not get cpu clock id");
qtb_exit_with_status(ERROR_UNKNOWN);
}
init_x();
set_refresh_time();
setup_signals();
initialize_modules();
do_initial_refresh();
sigprocmask(SIG_UNBLOCK, &global_real_time_mask, NULL);
module_poll_loop();
return 0;
}
static void qtb_exit() {
qtb_exit_with_status(global_last_error);
}
static void qtb_exit_with_status(error_code status) {
exit(status);
}
static void check_config() {
if (global_module_count == 0) {
qtb_log("error: no modules defined");
qtb_exit_with_status(ERROR_CONFIG);
}
#ifdef REFRESH_TIME
if (REFRESH_TIME <= 0) {
qtb_log("error: refresh time must be greater than 0, was: '%lu'",
REFRESH_TIME);
qtb_exit_with_status(ERROR_CONFIG);
}
#endif
}
/* if current_action is ARG_ACTION_SKIP, print an error and return NULL,
otherwise, return value */
static const char *check_arg_value(char arg, const char *value,
arg_action current_action) {
if (current_action == ARG_ACTION_SKIP) {
qtb_log("error: value already in use by another option: '%s'", arg);
return NULL;
}
if (!value) {
qtb_log("error: option requires value: '%c'", arg);
}
return value;
}
static void set_disabled_modules(const char *arg) {
if (arg == NULL) {
return;
}
/* reset module disabled state */
global_disabled_module_count = 0;
size_t i;
for (i = 0; i < global_module_count; ++i) {
modules[i].disabled = FALSE;
}
char *arg_copy = qtb_strdup(arg);
char *end_ptr;
const char *current = strtok_r(arg_copy, ";", &end_ptr);
while (current) {
/* size_t i; */
for (i = 0; i < global_module_count; ++i) {
if (strcmp(modules[i].name, current) == 0) {
modules[i].disabled = TRUE;
++global_disabled_module_count;
goto found_module;
}
}
qtb_log("attempt to disable unknown module: '%s'", current);
found_module:
current = strtok_r(NULL, ";", &end_ptr);
continue;
}
qtb_free(arg_copy);
}
/* if current_action is ARG_ACTION_SKIP, error if we encounter an arg with a
* value */
static arg_action interpret_flag_character(char arg, const char *next,
arg_action current_action) {
switch (arg) {
case 'v':
flag_print_version = TRUE;
return ARG_ACTION_STOP;
case 'h':
flag_print_help = TRUE;
return ARG_ACTION_STOP;
case 'i':
flag_print_info = TRUE;
return ARG_ACTION_STOP;
case 's':
flag_write_to_stdout = TRUE;
flag_set_root_title = FALSE;
return ARG_ACTION_CONTINUE;
case 'n':
set_disabled_modules(check_arg_value(arg, next, current_action));
return ARG_ACTION_SKIP;
#ifdef HAS_X11
case 'd':
flag_x_display_name = check_arg_value(arg, next, current_action);
return ARG_ACTION_SKIP;
case 'r':
flag_set_root_title = TRUE;
flag_write_to_stdout = FALSE;
return ARG_ACTION_CONTINUE;
#else
case 'd':
case 'r':
qtb_log("error: X11 support not included in build");
global_last_error = ERROR_X11;
return ARG_ACTION_STOP;
#endif
default:
global_last_error = ERROR_ARG;
print_flag_error(arg);
return ARG_ACTION_CONTINUE;
}
}
static arg_action interpret_flag_arg(const char *arg, const char *next) {
if (!global_interpret_flags) {
return ARG_ACTION_NONE;
}
if (strcmp(arg, "--") == 0) {
global_interpret_flags = FALSE;
return ARG_ACTION_NONE;
}
if (arg[0] == '\0') {
print_arg_error(arg);
return ARG_ACTION_CONTINUE;
}
if (arg[0] == '-') {
if (arg[1] == '\0') {
print_arg_error(arg);
return ARG_ACTION_CONTINUE;
}
arg_action return_action = ARG_ACTION_CONTINUE;
++arg;
while (*arg) {
arg_action current_action =
interpret_flag_character(*arg, next, return_action);
if (current_action == ARG_ACTION_STOP) {
return ARG_ACTION_STOP;
} else if (current_action == ARG_ACTION_CONTINUE && return_action != ARG_ACTION_SKIP) {
return_action = ARG_ACTION_CONTINUE;
} else if (current_action == ARG_ACTION_SKIP) {
return_action = ARG_ACTION_SKIP;
}
++arg;
}
return return_action;
}
return ARG_ACTION_NONE;
}
static arg_action interpret_normal_arg(const char *arg, const char *next) {
print_arg_error(arg);
return ARG_ACTION_CONTINUE;
}
static void interpret_args(int argc, const char **argv) {
int i;
for (i = 1; i < argc; ++i) {
const char *current_arg = argv[i];
const char *current_value = argv[i + 1];
arg_action flag_action = interpret_flag_arg(current_arg, current_value);
switch (flag_action) {
case ARG_ACTION_NONE:
break;
case ARG_ACTION_CONTINUE:
continue;
case ARG_ACTION_STOP:
return;
case ARG_ACTION_SKIP:
++i;
continue;
}
arg_action normal_action =
interpret_normal_arg(current_arg, current_value);
switch (normal_action) {
case ARG_ACTION_NONE:
break;
case ARG_ACTION_CONTINUE:
continue;
case ARG_ACTION_STOP:
return;
case ARG_ACTION_SKIP:
++i;
continue;
}
}
}
static void print_flag_error(char arg) {
if (isprint(arg)) {
qtb_log("error: unknown option: '%c'", arg);
} else {
qtb_log("error: unknown option: '0x%X'", arg);
}
}
static void print_arg_error(const char *arg) {
qtb_log("error: unknown argument: '%s'", arg);
}
static void print_help_and_exit() {
printf("quick-text-bar - a fast and customizable text based bar\n");
#if HAS_X11
printf("usage: %s [-h] [-v] [-i] [-n MODULES] [-d DISPLAY] [-r] [-s] \n",
global_exec_name);
#else
printf("usage: %s [-h] [-v] [-i] [-n MODULES] [-s] \n", global_exec_name);
#endif
printf(" -h show this message, then exit\n");
printf(" -v print version, then exit\n");
printf(" -i print version and module informaton, then exit\n");
printf(" -n semi-colon seperated list of modules to disable\n");
#ifdef HAS_X11
printf(" -d the X display to use when setting the root window name\n");
if (DEFAULT_SET_ROOT_TITLE) {
printf(" -r set the X root window name when updating the bar "
"(default)\n");
printf(" -s write to stdout when updating the bar\n");
} else {
printf(" -r set the X root window name when updating the bar\n");
printf(" -s write to stdout when updating the bar (default)\n");
}
#else
printf(" -d the X display to use when setting the root window name "
"(disabled)\n");
printf(" -r set the X root window name when updating the bar "
"(disabled)\n");
printf(" -s write to stdout when updating the bar\n");
#endif
qtb_exit();
}
static void print_version_and_exit() {
printf("quick-text-bar v%s\n", QTB_VERSION);
qtb_exit();
}
static void print_info_and_exit(void) {
printf("quick-text-bar v%s\n", QTB_VERSION);
#ifdef HAS_X11
printf("X11 Support: Present\n");
#else
printf("X11 Support: Absent\n");
#endif
printf("Modules: %zu\n", global_module_count);
size_t i;
for (i = 0; i < global_module_count; ++i) {
printf(" %s\n", modules[i].name);
}
qtb_exit();
}
static unsigned long find_gcf(unsigned long *nums, size_t len) {
if (len == 0) { /* gcf(0) = 0 */
return 0;
} else if (len == 1) { /* gcf(n) = n */
return nums[0];
}
/* calculate all prime factors */
unsigned long **prime_factors = NULL;
size_t prime_factors_length = 0;
size_t i;
for (i = 0; i < len; ++i) {
unsigned long *i_prime_factors = find_prime_factors(nums[i], NULL);
prime_factors = qtb_realloc(prime_factors, sizeof(unsigned long *) *
++prime_factors_length);
prime_factors[prime_factors_length - 1] = i_prime_factors;
}
/* find which calculated prime factors are common to all inputs */
unsigned long *common_factors = NULL;
size_t common_factors_length = 0;
unsigned long *j;
/* loop though each factor in prime_factors[0] */
for (j = prime_factors[0]; *j != 0; ++j) {
/* loop though every set of factors except prime_factors[0] */
/* size_t i; */
for (i = 1; i < prime_factors_length; ++i) {
unsigned long *i_prime_factors;
for (i_prime_factors = prime_factors[i]; *i_prime_factors != 0;
++i_prime_factors) {
if (*i_prime_factors == *j) {
*i_prime_factors = 4; /* remove the factor (by setting it to
a composite number) */
goto found_factor;
}
}
/* the factor was not found, therefore we can't add it */
goto dont_add;
/* we found the factor, check the next set of factors */
found_factor:
continue;
}
/* the factor was a common factor, add it */
common_factors = qtb_realloc(
common_factors, sizeof(unsigned long) * ++common_factors_length);
common_factors[common_factors_length - 1] = *j;
/* the factor was not a common factor */
dont_add:
continue;
}
/* qtb_free sets of factors */
/* size_t i; */
for (i = 0; i < prime_factors_length; ++i) {
qtb_free(prime_factors[i]);
}
qtb_free(prime_factors);
/* finally, calculate the gcf */
unsigned long gcf = 1;
/* size_t i; */
for (i = 0; i < common_factors_length; ++i) {
gcf *= common_factors[i];
}
qtb_free(common_factors);
return gcf;
}
/* return value will be 0 terminated. if out_len is not NULL,
it's value will be set to the number of primes found (length of return value
- 1) */
static unsigned long *find_prime_factors(unsigned long n, size_t *out_len) {
unsigned long *out_arr = NULL;
size_t arr_len = 0;
while (n % 2 == 0) {
out_arr = qtb_realloc(out_arr, sizeof(unsigned long) * ++arr_len);
out_arr[arr_len - 1] = 2;
n /= 2;
}
unsigned long i;
for (i = 3; i <= sqrtl(n); i += 2) {
while (n % i == 0) {
out_arr =
qtb_realloc(out_arr, sizeof(unsigned long) * ++arr_len);
out_arr[arr_len - 1] = i;
n /= i;
}
}
if (n > 2) {
out_arr = qtb_realloc(out_arr, sizeof(unsigned long) * ++arr_len);
out_arr[arr_len - 1] = n;
}
out_arr = qtb_realloc(out_arr, sizeof(unsigned long) * arr_len);
out_arr[arr_len] = 0;
if (out_len) {
*out_len = arr_len;
}
return out_arr;
}
static void initialize_modules() {
int has_error = FALSE;
size_t i;
for (i = 0; i < global_module_count; ++i) {
if (modules[i].disabled) {
continue;
}
if (modules[i].signal + SIGRTMIN > SIGRTMAX) {
has_error = TRUE;
qtb_log("%s: error: signal out of range: %d\n",
modules[i].signal + SIGRTMIN);
continue;
}
if (modules[i].init) {
modules[i].init();
}
modules[i].last_text = NULL;
modules[i].last_refresh = 0;
}
if (has_error) {
qtb_log("error: some modules were not initialized, exiting...");
qtb_exit_with_status(ERROR_MODULE);
}
}
static void set_refresh_time() {
#ifdef REFRESH_TIME
unsigned long refresh_ms = REFRESH_TIME;
#else
unsigned long refresh_ms = find_module_refresh_gcf();
if (refresh_ms == 0) { /* if all modules are triggered by signals */
refresh_ms = HOURS(1); /* refresh once an hour */
}
#endif
miliseconds_to_timespec(refresh_ms, &global_refresh_time);
}
static void signal_handler(int signum) {
struct timespec current_time;
clock_gettime(global_cpu_clock_id, &current_time);
int module_updated = FALSE;
unsigned long current_time_ms = timespec_to_miliseconds(&current_time);
int adjusted_signum = signum - SIGRTMIN;
size_t i;
for (i = 0; i < global_module_count; ++i) {
if (!modules[i].disabled && modules[i].signal == adjusted_signum) {
refresh_module(&modules[i]);
modules[i].last_refresh = current_time_ms;
module_updated = TRUE;
}
}
if (module_updated) {
rewrite_bar();
}
}
static void setup_signals() {
sigemptyset(&global_real_time_mask);
int i;
for (i = SIGRTMIN; i <= SIGRTMAX; ++i) {
sigaddset(&global_real_time_mask, i);
struct sigaction action;
sigemptyset(&action.sa_mask);
action.sa_flags = 0;
action.sa_handler = &signal_handler;
if (sigaction(i, &action, NULL) != 0) {
qtb_log("error: could not setup handler for signal: %d", i);
qtb_exit_with_status(ERROR_UNKNOWN);
}
}
sigprocmask(SIG_BLOCK, &global_real_time_mask, NULL);
}
static unsigned long find_module_refresh_gcf() {
size_t refresh_times_length = 0;
unsigned long *refresh_times = NULL;
size_t i;
for (i = 0; i < global_module_count; ++i) {
if (!modules[i].disabled && modules[i].refresh_time != NO_REFRESH) {
refresh_times = qtb_realloc(
refresh_times, sizeof(unsigned long) * ++refresh_times_length);
refresh_times[refresh_times_length - 1] = modules[i].refresh_time;
}
}
unsigned long gcf = find_gcf(refresh_times, refresh_times_length);
qtb_free(refresh_times);
return gcf;
}
static unsigned long timespec_to_miliseconds(struct timespec *ts) {
return (ts->tv_sec * 1000) + (ts->tv_nsec / 1000000);
}
static void miliseconds_to_timespec(unsigned long ms, struct timespec *out_ts) {
out_ts->tv_sec = floorl(ms / 1000);
out_ts->tv_nsec = (ms % 1000) * 1000000;
}
static void do_initial_refresh() {
int has_normal_module = FALSE;
size_t i;
for (i = 0; i < global_module_count; ++i) {
if (modules[i].disabled) {
continue;
}
if (modules[i].refresh_time != NO_REFRESH) {
has_normal_module = TRUE;
}
if (modules[i].poll) {
refresh_module(&modules[i]);
}
}
if (!has_normal_module) {
rewrite_bar();
}
}
static void refresh_module(struct BarModule *module) {
sigprocmask(SIG_BLOCK, &global_real_time_mask, NULL);
if (module->last_text) {
qtb_free(module->last_text);
module->last_text = NULL;
}
module->last_text = module->poll();
if (module->last_text) {
module->last_text_length = strlen(module->last_text);
} else {
module->last_text_length = 0;
}
sigprocmask(SIG_UNBLOCK, &global_real_time_mask, NULL);
}
/* return TRUE if the module was refreshed, FALSE otherwise */
static int check_and_refresh_module(struct BarModule *module,
unsigned long current_time) {
if (module->disabled || module->refresh_time == NO_REFRESH) {
return FALSE;
}
unsigned long module_last_refresh =
module->last_refresh + module->refresh_time;
if (module_last_refresh >= global_last_refresh && module->poll) {
refresh_module(module);
module->last_refresh = current_time;
return TRUE;
}
return FALSE;
}
static void module_poll_loop() {
while (TRUE) {
struct timespec current_time;
clock_gettime(global_cpu_clock_id, &current_time);
unsigned long current_time_ms = timespec_to_miliseconds(&current_time);
int module_refreshed = FALSE;
size_t i;
for (i = 0; i < global_module_count; ++i) {
if (check_and_refresh_module(&modules[i], current_time_ms)) {
module_refreshed = TRUE;
}
}
if (module_refreshed) {
rewrite_bar();
}
/* calculate how long it took us to run this iteration
and subtract it from the refresh time */
struct timespec end_time;
clock_gettime(global_cpu_clock_id, &end_time);
struct timespec span_time;
timespec_diff(&current_time, &end_time, &span_time);
struct timespec final_sleep_time;
timespec_diff(&span_time, &global_refresh_time, &final_sleep_time);
nanosleep(&final_sleep_time, NULL);
}
}
static void rewrite_bar() {
/* start with size of prefix, suffix, and null byte */
size_t bar_length = global_prefix_length + global_suffix_length + 1;
char *bar_text = qtb_malloc(bar_length);
bar_text[0] = '\0';
strcat(bar_text, PREFIX_TEXT);
size_t i;
for (i = 0; i < global_module_count - 1; ++i) {
if (modules[i].last_text) {
bar_text = qtb_realloc(
bar_text, (bar_length += modules[i].last_text_length +
global_seperator_length));
strcat(bar_text, modules[i].last_text);
strcat(bar_text, SEPERATOR_TEXT);
}
}
struct BarModule *last_module = &modules[global_module_count - 1];
if (last_module->last_text) {
bar_text = qtb_realloc(
bar_text, (bar_length += last_module->last_text_length));
strcat(bar_text, last_module->last_text);
}
strcat(bar_text, SUFFIX_TEXT);
if (flag_set_root_title) {
set_x_root_title(bar_text);
} else {
printf("%s\n", bar_text);
fflush(stdout);
}
qtb_free(bar_text);
}
/* subtract start from end */
static void timespec_diff(const struct timespec *start,
const struct timespec *end, struct timespec *out) {
out->tv_nsec = end->tv_nsec - start->tv_nsec;
out->tv_sec = end->tv_sec - start->tv_sec;
if (out->tv_sec < 0) { /* start > end */
out->tv_sec = 0;
out->tv_nsec = 0;
} else if (out->tv_nsec < 0) {
out->tv_nsec += 1000000000l;
--out->tv_sec;
if (out->tv_sec < 0) {
out->tv_sec = 0;
}
}
}
static void init_x() {
#ifdef HAS_X11
global_x_display = XOpenDisplay(flag_x_display_name);
if (!global_x_display) {
const char *display_name;
if (flag_x_display_name) {
display_name = flag_x_display_name;
} else {
display_name = XDisplayName(NULL);
}
qtb_log("error: failed to open X display: '%s'", display_name);
if (flag_set_root_title) {
qtb_exit_with_status(ERROR_X11);
}
} else {
global_x_screen = XDefaultScreen(global_x_display);
global_x_root = XRootWindow(global_x_display, global_x_screen);
}
#endif
}
static void set_x_root_title(const char *title) {
#ifdef HAS_X11
if (global_x_display) {
XStoreName(global_x_display, global_x_root, title);
XFlush(global_x_display);
}
#endif
}
/* module api definitions */
void _qtb_internal_log(const char *fmt, ...) {
fprintf(stderr, "%s: ", global_exec_name);
va_list args;
va_start(args, fmt);
vfprintf(stderr, fmt, args);
va_end(args);
fwrite("\n", 1, 1, stderr);
}
void qtb_die() {
qtb_exit_with_status(ERROR_MODULE);
}
void qtb_signal_modules(int sig) {
pthread_kill(global_main_thread, SIGRTMIN + sig);
}
void *qtb_malloc(size_t size) {
return qtb_realloc(NULL, size);
}
static int is_overflow(size_t n1, size_t n2) {
if (n1 <= 1 || n2 <= 1) {
return FALSE;
}
return (n1 * n2) / n1 != n2;
}
void *qtb_calloc(size_t n, size_t size) {
if (is_overflow(n, size)) {
qtb_log(
"attempt to allocate %zu bytes %zu times failed due to overflow", n,
size);
qtb_exit_with_status(ERROR_MEMORY);
}
size_t total_size = n * size;
void *ptr = qtb_malloc(total_size);
memset(ptr, 0, total_size);
return ptr;
}
void *qtb_realloc(void *ptr, size_t size) {
void *new_ptr = realloc(ptr, size);
if (!new_ptr) {
qtb_log("error: out of memory");
qtb_exit_with_status(ERROR_MEMORY);
}
return new_ptr;
}
char *qtb_strdup(const char *str) {
size_t len = strlen(str);
char *new_str = qtb_malloc(len + 1);
memcpy(new_str, str, len + 1);
return new_str;
}
void qtb_free(void *ptr) {
if (ptr) {
free(ptr);
}
}
#ifdef HAS_X11
Display *qtb_get_x_display(void) {
return global_x_display;
}
#endif

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#include "battery.h"
#include "../util.h"
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define ADAPTER_BASE_PATH "/sys/class/power_supply/"
#define BATTERY_PATH "/sys/class/power_supply/BAT0"
static const char *adapter_search_names[] = {"AC0", "ADP1"};
static size_t adapter_search_names_count =
sizeof(adapter_search_names) / sizeof(char *);
static char *adapter_status_path;
static int max_batery_charge;
static int show_notifiaction = TRUE;
static void find_max_battery_charge() {
FILE *max_file = fopen(BATTERY_PATH "/charge_full", "r");
fseeko(max_file, 0, SEEK_END);
off_t len = ftello(max_file);
rewind(max_file);
char text[len + 1];
text[len] = '\0';
fread(text, 1, len, max_file);
max_batery_charge = strtoul(text, NULL, 10);
fclose(max_file);
}
static int is_battery_full() {
FILE *status_file = fopen(BATTERY_PATH "/status", "r");
if (!status_file) {
return FALSE;
}
fseeko(status_file, 0, SEEK_END);
off_t len = ftello(status_file);
rewind(status_file);
char status_text[len + 1];
status_text[len] = '\0';
fread(status_text, 1, len, status_file);
fclose(status_file);
return strcmp(status_text, "Full\n") == 0;
}
static int get_battery_percent() {
if (is_battery_full()) {
return 100;
}
FILE *battery_file = fopen(BATTERY_PATH "/charge_now", "r");
if (!battery_file) {
return -1;
}
fseeko(battery_file, 0, SEEK_END);
off_t len = ftello(battery_file);
rewind(battery_file);
char charge_text[len + 1];
charge_text[len] = '\0';
fread(charge_text, 1, len, battery_file);
fclose(battery_file);
long charge = strtoul(charge_text, NULL, 10);
float scale = (float)charge / (float)max_batery_charge;
return round(scale * 100.0f);
}
static int is_adapter_connected() {
FILE *adapter_file = fopen(adapter_status_path, "r");
if (!adapter_file) {
return -1;
}
char text[2] = {'\0', '\0'};
fread(text, 1, 1, adapter_file);
fclose(adapter_file);
return text[0] == '1'; /* 1 means connected, anything else is not */
}
static void find_adapter_status_path() {
size_t i;
for (i = 0; i < adapter_search_names_count; ++i) {
size_t name_len = strlen(adapter_search_names[i]);
/* -1 is to compensate for '\0' at end of "/online" */
char *name = qtb_malloc(sizeof(ADAPTER_BASE_PATH) + name_len + sizeof("/online") - 1);
sprintf(name, "%s%s/online", ADAPTER_BASE_PATH, adapter_search_names[i]);
FILE *file = fopen(name, "r");
if (file) {
adapter_status_path = name;
} else {
qtb_free(name);
}
}
}
void battery_module_init(void) {
find_max_battery_charge();
find_adapter_status_path();
}
static const char *get_battery_icon(int percent, int adapter) {
if (adapter) {
return "";
} else if (percent <= 10) {
return "";
} else if (percent <= 20) {
return "";
} else if (percent <= 30) {
return "";
} else if (percent <= 40) {
return "";
} else if (percent <= 50) {
return "";
} else if (percent <= 60) {
return "";
} else if (percent <= 70) {
return "";
} else if (percent <= 90) {
return "";
} else if (percent < 100) {
return "";
} else {
return "";
}
}
static void warn_low_battery() {
#ifdef HAS_X11
if (qtb_get_x_display()) { /* if x is running */
system("notify-send -t 0 'Battery is less than 10%!'");
} else {
#endif
system("wall -t 0 'Battery is less than 10%!'");
#ifdef HAS_X11
}
#endif
}
char *battery_module_poll() {
char *output = qtb_calloc(16, 1);
int percent = get_battery_percent();
int adapter = is_adapter_connected();
if (percent == -1 || adapter == -1) {
sprintf(output, "？N/A%%");
} else {
const char *icon = get_battery_icon(percent, adapter);
sprintf(output, "%s%3d%%", icon, percent);
if (show_notifiaction && percent <= 10) {
warn_low_battery();
show_notifiaction = FALSE;
} else if (percent > 10) {
show_notifiaction = TRUE;
}
}
return output;
}

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extern void battery_module_init(void);
extern char *battery_module_poll(void);

118
modules/bluetooth.c Normal file
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#include "bluetooth.h"
#include "../util.h"
#include <dirent.h>
#include <gio/gio.h>
static long long powered_devices = 0;
static GPtrArray *get_bluetooth_device_paths() {
DIR *dir = opendir("/sys/class/bluetooth");
if (!dir) {
return NULL;
}
GPtrArray *arr = g_ptr_array_new();
struct dirent *current;
while ((current = readdir(dir))) {
if (strcmp(current->d_name, ".") != 0 &&
strcmp(current->d_name, "..") != 0) {
char *path = g_strdup_printf("/org/bluez/%s", current->d_name);
g_ptr_array_add(arr, path);
}
}
closedir(dir);
return arr;
}
static void load_initial_device_states(GDBusConnection *dbus,
GPtrArray *devices) {
gsize i;
for (i = 0; i < devices->len; ++i) {
const char *path = g_ptr_array_index(devices, i);
GError *err = NULL;
GVariant *response = g_dbus_connection_call_sync(
dbus, "org.bluez", path, "org.freedesktop.DBus.Properties", "Get",
g_variant_new_parsed("('org.bluez.Adapter1', 'Powered')"),
(GVariantType *)"(v)", G_DBUS_CALL_FLAGS_NONE, -1, NULL, &err);
if (response) {
GVariant *wrapper = g_variant_get_child_value(response, 0);
GVariant *value = g_variant_get_child_value(wrapper, 0);
gboolean powered = g_variant_get_boolean(value);
if (powered) {
++powered_devices;
} /* sice powered_devices is already 0, we dont have to increment it
if the device is not powered */
g_variant_unref(value);
g_variant_unref(wrapper);
g_variant_unref(response);
}
}
qtb_signal_modules(4);
}
static void device_changed_callback(GDBusConnection *dbus,
const char *sender_name,
const char *object_path,
const char *interface_name,
const char *signal_name, GVariant *params,
gpointer user_data) {
GVariant *changed = g_variant_get_child_value(params, 1);
GVariant *value_wrapper = g_variant_lookup_value(changed, "Powered", G_VARIANT_TYPE_BOOLEAN);
if (value_wrapper) {
gboolean powered = g_variant_get_boolean(value_wrapper);
if (powered) {
++powered_devices;
} else {
--powered_devices;
}
g_variant_unref(value_wrapper);
}
g_variant_unref(changed);
qtb_signal_modules(4);
}
static void subscribe_to_events(GDBusConnection *dbus, GPtrArray *devices) {
gsize i;
for (i = 0; i < devices->len; ++i) {
const char *path = g_ptr_array_index(devices, i);
g_dbus_connection_signal_subscribe(
dbus, NULL, "org.freedesktop.DBus.Properties", "PropertiesChanged",
path, "org.bluez.Adapter1", G_DBUS_SIGNAL_FLAGS_NONE,
&device_changed_callback, NULL, NULL);
}
}
static void *thread_action() {
GMainContext *context = g_main_context_new();
g_main_context_push_thread_default(context);
GError *err = NULL;
GDBusConnection *dbus = g_bus_get_sync(G_BUS_TYPE_SYSTEM, NULL, &err);
if (err) {
qtb_log("could not connect to bluez on the system bus: %s",
err->message);
qtb_die();
}
GPtrArray *devices = get_bluetooth_device_paths();
load_initial_device_states(dbus, devices);
subscribe_to_events(dbus, devices);
gsize i;
for (i = 0; i < devices->len; ++i) {
g_free(g_ptr_array_index(devices, i));
}
g_ptr_array_free(devices, TRUE);
GMainLoop *main_loop = g_main_loop_new(context, FALSE);
g_main_loop_run(main_loop);
return NULL;
}
void bluetooth_module_init() {
g_thread_new("bluetooth-module", &thread_action, NULL);
}
char *bluetooth_module_poll() {
char *output = NULL;
if (powered_devices != 0) {
output = qtb_strdup("");
}
return output;
}

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extern void bluetooth_module_init(void);
extern char *bluetooth_module_poll(void);

89
modules/fcitx4.c Normal file
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#include "fcitx4.h"
#include "../util.h"
#include <gio/gio.h>
#include <stdio.h>
#include <string.h>
struct input_method {
const char *name;
const char *symbol;
};
const struct input_method input_methods[] = {
{"fcitx-keyboard-us", "Ｅ"},
{"kkc", "和"},
{"mozc", "和"}
};
static const size_t im_count = sizeof(input_methods) / sizeof(struct input_method);
static const struct input_method *current_im = NULL;
static const struct input_method *find_im(const char *name) {
size_t i;
for (i = 0; i < im_count; ++i) {
if (strcmp(name, input_methods[i].name) == 0) {
return &input_methods[i];
}
}
return NULL;
}
static void set_current_im(GDBusConnection *dbus) {
current_im = NULL;
GVariant *tuple = g_dbus_connection_call_sync(
dbus, "org.fcitx.Fcitx", "/inputmethod", "org.fcitx.Fcitx.InputMethod",
"GetCurrentIM", NULL, G_VARIANT_TYPE_TUPLE, G_DBUS_CALL_FLAGS_NONE, -1,
NULL, NULL);
if (tuple) {
GVariant *response = g_variant_get_child_value(tuple, 0);
size_t response_len;
const char *response_im = g_variant_get_string(response, &response_len);
current_im = find_im(response_im);
g_variant_unref(response);
g_variant_unref(tuple);
}
}
static void im_changed_callback(GDBusConnection *dbus, const char *sender_name,
const char *object_path, const char *interface_name,
const char *signal_name, GVariant *params,
gpointer user_data) {
set_current_im(dbus);
qtb_signal_modules(3);
}
static void *thread_action(gpointer user_data) {
GMainContext *context = g_main_context_new();
g_main_context_push_thread_default(context);
GError *err = NULL;
GDBusConnection *dbus = g_bus_get_sync(G_BUS_TYPE_SESSION, NULL, &err);
if (err) {
qtb_log("could not connect to fcitx on dbus: %s", err->message);
qtb_die();
}
set_current_im(dbus);
qtb_signal_modules(3);
g_dbus_connection_signal_subscribe(
dbus, NULL, "org.freedesktop.DBus.Properties", "PropertiesChanged",
"/inputmethod", "org.fcitx.Fcitx.InputMethod", G_DBUS_SIGNAL_FLAGS_NONE,
&im_changed_callback, NULL, NULL);
GMainLoop *main_loop = g_main_loop_new(context, FALSE);
g_main_loop_run(main_loop);
return NULL;
}
void fcitx4_module_init() {
g_thread_new("fcitx-module", &thread_action, NULL);
}
char *fcitx4_module_poll() {
const char *symbol;
if (current_im) {
symbol = current_im->symbol;
} else {
symbol = "？";
}
size_t sym_len = strlen(symbol);
char *output = qtb_malloc(sizeof("") + sym_len);
sprintf(output, " %s", symbol);
return output;
}

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extern void fcitx4_module_init(void);
extern char *fcitx4_module_poll(void);

96
modules/linuxnm.c Normal file
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#include "linuxnm.h"
#include "../util.h"
#include <NetworkManager.h>
#include <signal.h>
#include <string.h>
#define TYPE_NO_MANAGER 0x1
#define TYPE_WIRED 0x2
#define TYPE_WIRELESS 0x4
#define TYPE_VPN 0x8
typedef int connection_type;
static connection_type active_types;
static int is_connection_vpn(NMConnection *connection) {
if (nm_connection_get_setting_vpn(connection)) {
return TRUE;
}
const char *type = nm_connection_get_connection_type(connection);
return strcmp(type, "wireguard") == 0;
}
static void update_connections(NMClient *client) {
const GPtrArray *active_connections =
nm_client_get_active_connections(client);
guint i;
for (i = 0; i < active_connections->len; ++i) {
NMActiveConnection *current_active =
g_ptr_array_index(active_connections, i);
NMConnection *current =
NM_CONNECTION(nm_active_connection_get_connection(current_active));
const char *type = nm_connection_get_connection_type(current);
if (is_connection_vpn(current)) {
active_types |= TYPE_VPN;
} else if (nm_connection_get_setting_wired(current)) {
active_types |= TYPE_WIRED;
} else if (nm_connection_get_setting_wireless(current)) {
active_types |= TYPE_WIRELESS;
}
}
}
static void connections_changed(NMClient *client, GParamSpec *pspec,
gpointer user_data) {
active_types = 0;
if (!nm_client_get_nm_running(client)) {
active_types = TYPE_NO_MANAGER;
} else {
update_connections(client);
}
qtb_signal_modules(2);
}
static void *thread_action(gpointer user_data) {
GMainContext *context = g_main_context_new();
g_main_context_push_thread_default(context);
GError *err = NULL;
NMClient *client = nm_client_new(NULL, &err);
if (err) {
return err->message;
}
g_signal_connect(client, "notify::" NM_CLIENT_ACTIVE_CONNECTIONS,
G_CALLBACK(connections_changed), NULL);
g_signal_connect(client, "notify::" NM_CLIENT_NM_RUNNING,
G_CALLBACK(connections_changed), NULL);
connections_changed(client, NULL, NULL);
GMainLoop *main_loop = g_main_loop_new(context, FALSE);
g_main_loop_run(main_loop);
return NULL;
}
void linuxnm_module_init() {
g_thread_new("network-module", &thread_action, NULL);
}
char *linuxnm_module_poll() {
char *output = qtb_calloc(8, 1);
if ((active_types & TYPE_NO_MANAGER) == TYPE_NO_MANAGER) {
strcat(output, "ﳤ");
}
if ((active_types & TYPE_VPN) == TYPE_VPN) {
strcat(output, "嬨");
}
if ((active_types & TYPE_WIRED) == TYPE_WIRED) {
strcat(output, "");
}
if ((active_types & TYPE_WIRELESS) == TYPE_WIRELESS) {
strcat(output, "直");
}
if (active_types == 0) { /* no valid connections found */
strcat(output, "");
}
return output;
}

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extern void linuxnm_module_init(void);
extern char *linuxnm_module_poll(void);

44
modules/optimus.c Normal file
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#include "optimus.h"
#include "../util.h"
#include <stdlib.h>
static const char *card_string;
void optimus_module_init() {
int status = system("card_status=\"`optimus-manager --status 2>/dev/null | "
"grep -Po '(?<=Current GPU mode : )[a-z]'`\"\n"
"case \"$card_status\" in\n"
" 'i')\n"
" exit 1\n"
" ;;\n"
" 'h')\n"
" exit 2\n"
" ;;\n"
" 'n')\n"
" exit 3\n"
" ;;\n"
" *)\n"
" exit 4\n"
" ;;\n"
"esac\n");
switch (WEXITSTATUS(status)) {
case 1:
card_string = "Ｉ";
break;
case 2:
card_string = "Ｈ";
break;
case 3:
card_string = "Ｎ";
break;
/* case 4: */
default:
card_string = "？";
break;
}
}
char *optimus_module_poll() {
return qtb_strdup(card_string);
}

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extern void optimus_module_init(void);
extern char *optimus_module_poll(void);

63
modules/oss.c Normal file
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#include "oss.h"
#include "../util.h"
#include <fcntl.h>
#include <unistd.h>
#include <sys/soundcard.h>
#include <stdio.h>
typedef struct {
int fd;
int pcm;
int vol;
int mute;
} mixer_data;
static mixer_data main_mixer;
#define ioctl_checked(fd, request, arg) _ioctl_checked(fd, request, #request, arg)
static void _ioctl_checked(int fd, unsigned long request, const char *rq_name, void *arg) {
if (ioctl(fd, request, arg) < 0) {
qtb_log("ioctl request %s failed", rq_name);
qtb_die();
}
}
static void open_mixer(const char *path, mixer_data *mixer) {
mixer->fd = open(path, O_RDONLY);
if (mixer->fd < 0) {
qtb_log("could not open mixer '%s'", path);
qtb_die();
}
}
static void read_mixer(mixer_data *mixer) {
ioctl_checked(mixer->fd, SOUND_MIXER_READ_PCM, &mixer->pcm);
mixer->pcm >>= 8;
ioctl_checked(mixer->fd, SOUND_MIXER_READ_VOLUME, &mixer->vol);
mixer->vol >>= 8;
mixer->mute = !(mixer->vol * mixer->pcm);
}
void oss_module_init() {
open_mixer("/dev/mixer", &main_mixer);
}
static const char *get_volume_icon(int volume, int mute) {
if (mute) {
return "ﱝ";
} else if (volume > 50) {
return "墳";
} else if (volume > 0) {
return "奔";
}
return "奄";
}
char *oss_module_poll() {
read_mixer(&main_mixer);
const char *icon = get_volume_icon(main_mixer.vol, main_mixer.mute);
char *buff = qtb_malloc(32);
sprintf(buff, "%s%3d%%",icon, main_mixer.vol);
return buff;
}

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extern void oss_module_init(void);
extern char *oss_module_poll(void);

132
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#include "pulse.h"
#include "../util.h"
#include <math.h>
#include <pthread.h>
#include <pulse/pulseaudio.h>
#include <stdio.h>
#include <string.h>
#define CONTEXT_NAME "quick-text-bar-audio"
#define CONTEXT_CONNECTING 0
#define CONTEXT_CONNECTED 1
#define CONTEXT_FAILED 2
static pa_threaded_mainloop *mainloop;
static pa_mainloop_api *mainloop_api;
static pa_context *context;
static int volume;
static int mute;
static void sink_info_callback(pa_context *ctx, const pa_sink_info *info,
int eol, void *user_data) {
if (info) {
pa_volume_t arg = pa_cvolume_avg(&info->volume);
float float_volume = ((float)arg / (float)PA_VOLUME_NORM) * 100.0f;
int new_volume = round(float_volume);
if (mute != info->mute || volume != new_volume) {
mute = info->mute;
volume = new_volume;
qtb_signal_modules(1);
}
}
}
static void server_info_callback(pa_context *ctx, const pa_server_info *info,
void *user_data) {
pa_operation *op = pa_context_get_sink_info_by_name(
ctx, info->default_sink_name, &sink_info_callback, NULL);
pa_operation_unref(op);
}
static void subscribe_callback(pa_context *ctx,
pa_subscription_event_type_t type, uint32_t idx,
void *user_data) {
unsigned int facility = type & PA_SUBSCRIPTION_EVENT_FACILITY_MASK;
pa_operation *op = NULL;
switch (facility) {
case PA_SUBSCRIPTION_EVENT_SINK:
op = pa_context_get_sink_info_by_index(ctx, idx, &sink_info_callback,
NULL);
break;
default:
break;
}
if (op) {
pa_operation_unref(op);
}
}
static void state_callback(pa_context *ctx, void *user_data) {
pa_operation *op;
switch (pa_context_get_state(ctx)) {
case PA_CONTEXT_READY:
op = pa_context_get_server_info(ctx, &server_info_callback, NULL);
pa_operation_unref(op);
pa_context_set_subscribe_callback(ctx, &subscribe_callback, NULL);
op = pa_context_subscribe(ctx, PA_SUBSCRIPTION_MASK_SINK, NULL, NULL);
pa_operation_unref(op);
break;
case PA_CONTEXT_FAILED:
volume = -1;
qtb_signal_modules(1);
break;
default:
break;
}
}
void pulse_module_init() {
mainloop = pa_threaded_mainloop_new();
if (!mainloop) {
qtb_log("could not create mainloop");
qtb_die();
}
mainloop_api = pa_threaded_mainloop_get_api(mainloop);
if (!mainloop_api) {
qtb_log("could not get api");
qtb_die();
}
context = pa_context_new(mainloop_api, CONTEXT_NAME);
if (!context) {
qtb_log("could not create context");
qtb_die();
}
pa_context_set_state_callback(
context, (pa_context_notify_cb_t)&state_callback, NULL);
if (pa_context_connect(context, NULL, PA_CONTEXT_NOAUTOSPAWN, NULL) < 0) {
qtb_log("could not connect");
qtb_die();
}
if (pa_threaded_mainloop_start(mainloop) < 0) {
qtb_log("could not start mainloop");
qtb_die();
}
}
static const char *get_volume_icon() {
if (mute) {
return "ﱝ";
} else if (volume > 50) {
return "墳";
} else if (volume > 0) {
return "奔";
}
return "奄";
}
char *pulse_module_poll() {
char *output = qtb_calloc(32, 1);
if (volume < 0) { /* not connected */
sprintf(output, "ﱝ ??%%");
pa_threaded_mainloop_stop(
mainloop); /* free the old mainloop and reset this module */
pa_threaded_mainloop_free(mainloop);
pulse_module_init();
} else {
const char *volume_icon = get_volume_icon();
sprintf(output, "%s%3d%%", volume_icon, volume);
}
return output;
}

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/* an example module that produces the current system volume */
extern void pulse_module_init(void);
extern char *pulse_module_poll(void);

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#include "time.h"
#include "../util.h"
#include <time.h>
#include <string.h>
#include <stdlib.h>
#define TIME_STRING_SIZE 64
#define TIME_FORMAT " %a %b %d  %R"
char *time_module_poll() {
time_t time_num = time(NULL);
struct tm time_tm;
localtime_r(&time_num, &time_tm);
char *output = qtb_malloc(TIME_STRING_SIZE);
int result = strftime(output, TIME_STRING_SIZE, TIME_FORMAT, &time_tm);
if (result == 0) {
strcpy(output, " ?? ?? ??  ??:??");
}
return output;
}

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/* an example module that produces the current time */
extern char *time_module_poll(void);

53
quick-text-bar.1.in Normal file
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.TH QUICK-TEXT-BAR 1 "" "quick-text-bar v${QTB_VERSION}"
.SH NAME
quick-text-bar \- a fast and customizable text based bar
.SH SYNOPSIS
.B quick-text-bar
[\fB\-h\fR]
[\fB\-v\fR]
[\fB\-i\fR]
[\fB\-n\fR \fIMODULES\fR]
[\fB\-d\fR \fIDISPLAY\fR]
[\fB\-r\fR]
[\fB\-s\fR]
.SH DESCRIPTION
quick-text-bar(1) is a fast and customizable bar for use with
X window managers such as dwm. It uses an extensible module
system to define what the bar looks like. Some of the options
described here will change based on compile time switches.
Use the \-h option to check these.
.SH OPTIONS
.PP
\fB\-h\fR
.RS 4
show this message, then exit
.RE
.PP
\fB\-v\fR
.RS 4
print version, then exit
.RE
.PP
\fB\-i\fR
.RS 4
print version and module informaton, then exit
.RE
.PP
\fB\-n\fR \fIMODULES\fR
.RS 4
semi-colon seperated list of modules to disable
.RE
.PP
\fB\-d\fR \fIDISPLAY\fR
.RS 4
the X display to use when setting the root window name
.RE
.PP
\fB\-r\fR
.RS 4
set the X root window name when updating the bar
.RE
.PP
\fB\-s\fR
.RS 4
write to stdout when updating the bar

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# Maintainer: Alexander Rosenberg <alexanderrosenberg@protonmail.com>
pkgname=quick-text-bar
pkgver=1.0.0
pkgrel=1
pkgdesc='A fast and customizable text based bar.'
arch=('x86_64')
license=('GPL3')
depends=('glib2' 'optimus-manager' 'bluez' 'networkmanager' 'dbus' 'pulseaudio')
makedepends=('cmake' 'git')
url='https://gitlab.com/Zander671/quick-text-bar.git'
source=("git+https://gitlab.com/Zander671/quick-text-bar.git" 'config.h' 'config.cmake')
sha256sums=('SKIP' 'SKIP' 'SKIP')
pkgver(){
cd "$pkgname"
git rev-list --count HEAD
}
build() {
cp config.h config.cmake "$pkgname"
cmake -B build -S "$pkgname"
cmake --build build
}
package() {
install --mode 0644 -D --target-directory "$pkgdir/usr/share/licenses/$pkgname" "$pkgname/LICENSE"
install --mode 0644 -D --target-directory "$pkgdir/usr/share/doc/$pkgname" "$pkgname/README.md"
install --mode 0644 -D --target-directory "$pkgdir/usr/share/man/man1" "build/quick-text-bar.1"
install --mode 0755 -D --target-directory "$pkgdir/usr/bin" "build/quick-text-bar"
}

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#ifndef _INCLUDED_MODULE_API_H
#define _INCLUDED_MODULE_API_H
#include <stddef.h>
#ifdef FALSE
#undef FALSE
#endif
#define FALSE 0
#ifdef TRUE
#undef TRUE
#endif
#define TRUE 1
/* execute an external program and return its exit code */
extern void _qtb_internal_log(const char *fmt, ...);
#define qtb_log(...) _qtb_internal_log("module - " __FILE__ ": " __VA_ARGS__);
extern void qtb_die(void);
extern void qtb_signal_modules(int sig);
extern void *qtb_malloc(size_t size);
extern void *qtb_calloc(size_t n, size_t size);
extern void *qtb_realloc(void *ptr, size_t size);
extern char *qtb_strdup(const char *str);
extern void qtb_free(void *ptr);
#ifdef HAS_X11
#include <X11/Xlib.h>
/* get the X display specified by the command line or DISPLAY
environemnt variable */
extern Display *qtb_get_x_display(void);
#endif
#endif