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Refactor config handling
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Removes confusing logic with double initialization and callbacks.

Signed-off-by: Artem Senichev <[email protected]>
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@artemsen
artemsen committed Aug 25, 2024
1 parent f51d661 commit c292bad
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Showing 20 changed files with 882 additions and 932 deletions.
228 changes: 109 additions & 119 deletions src/application.c
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,6 @@
#include "application.h"

#include "buildcfg.h"
#include "config.h"
#include "font.h"
#include "gallery.h"
#include "imagelist.h"
Expand Down Expand Up @@ -275,139 +274,98 @@ static struct image* load_first_file(size_t index, bool force)
}

/**
* Custom section loader, see `config_loader` for details.
* Load config.
* @param cfg config instance
*/
static enum config_status load_config(const char* key, const char* value)
static void load_config(struct config* cfg)
{
enum config_status status = cfgst_invalid_value;

if (strcmp(key, APP_CFG_MODE) == 0) {
if (strcmp(value, APP_MODE_VIEWER) == 0) {
ctx.ehandler = viewer_handle;
status = cfgst_ok;
} else if (strcmp(value, APP_MODE_GALLERY) == 0) {
ctx.ehandler = gallery_handle;
status = cfgst_ok;
}
} else if (strcmp(key, APP_CFG_POSITION) == 0) {
if (strcmp(value, APP_FROM_PARENT) == 0) {
ctx.window.x = POS_FROM_PARENT;
ctx.window.y = POS_FROM_PARENT;
status = cfgst_ok;
} else {
struct str_slice slices[2];
ssize_t x, y;
if (str_split(value, ',', slices, 2) == 2 &&
str_to_num(slices[0].value, slices[0].len, &x, 0) &&
str_to_num(slices[1].value, slices[1].len, &y, 0)) {
ctx.window.x = (ssize_t)x;
ctx.window.y = (ssize_t)y;
status = cfgst_ok;
}
}
} else if (strcmp(key, APP_CFG_SIZE) == 0) {
ssize_t width, height;
if (strcmp(value, APP_FROM_PARENT) == 0) {
ctx.window.width = SIZE_FROM_PARENT;
ctx.window.height = SIZE_FROM_PARENT;
status = cfgst_ok;
} else if (strcmp(value, APP_FROM_IMAGE) == 0) {
ctx.window.width = SIZE_FROM_IMAGE;
ctx.window.height = SIZE_FROM_IMAGE;
status = cfgst_ok;
} else if (strcmp(value, APP_FULLSCREEN) == 0) {
ctx.window.width = SIZE_FULLSCREEN;
ctx.window.height = SIZE_FULLSCREEN;
status = cfgst_ok;
} else {
struct str_slice slices[2];
if (str_split(value, ',', slices, 2) == 2 &&
str_to_num(slices[0].value, slices[0].len, &width, 0) &&
str_to_num(slices[1].value, slices[1].len, &height, 0) &&
width > 0 && width < 100000 && height > 0 && height < 100000) {
ctx.window.width = width;
ctx.window.height = height;
status = cfgst_ok;
}
}
} else if (strcmp(key, APP_CFG_SIGUSR1) == 0) {
if (action_create(value, &ctx.sigusr1)) {
status = cfgst_ok;
}
} else if (strcmp(key, APP_CFG_SIGUSR2) == 0) {
if (action_create(value, &ctx.sigusr2)) {
status = cfgst_ok;
}
} else if (strcmp(key, APP_CFG_APP_ID) == 0) {
str_dup(value, &ctx.app_id);
status = cfgst_ok;
const char* value;

// startup mode
value =
config_get_string(cfg, APP_CFG_SECTION, APP_CFG_MODE, APP_MODE_VIEWER);
if (strcmp(value, APP_MODE_VIEWER) == 0) {
ctx.ehandler = viewer_handle;
} else if (strcmp(value, APP_MODE_GALLERY) == 0) {
ctx.ehandler = gallery_handle;
} else {
status = cfgst_invalid_key;
ctx.ehandler = viewer_handle;
config_error_val(APP_CFG_SECTION, APP_CFG_MODE);
}

return status;
}

void app_create(void)
{
// initial window position
ctx.window.x = POS_FROM_PARENT;
ctx.window.y = POS_FROM_PARENT;
ctx.window.width = SIZE_FROM_PARENT;
ctx.window.height = SIZE_FROM_PARENT;
ctx.ehandler = viewer_handle;
str_dup(APP_NAME, &ctx.app_id);

action_create("reload", &ctx.sigusr1);
action_create("next_file", &ctx.sigusr2);

font_create();
image_list_create();
info_create();
keybind_create();
viewer_create();
gallery_create();

// register configuration loader
config_add_loader(APP_CFG_SECTION, load_config);
}

void app_destroy(void)
{
loader_destroy();
gallery_destroy();
viewer_destroy();
ui_destroy();
image_list_destroy();
info_destroy();
font_destroy();
keybind_destroy();

for (size_t i = 0; i < ctx.wfds_num; ++i) {
close(ctx.wfds[i].fd);
value = config_get_string(cfg, APP_CFG_SECTION, APP_CFG_POSITION,
APP_FROM_PARENT);
if (strcmp(value, APP_FROM_PARENT) != 0) {
struct str_slice slices[2];
ssize_t x, y;
if (str_split(value, ',', slices, 2) == 2 &&
str_to_num(slices[0].value, slices[0].len, &x, 0) &&
str_to_num(slices[1].value, slices[1].len, &y, 0)) {
ctx.window.x = (ssize_t)x;
ctx.window.y = (ssize_t)y;
} else {
config_error_val(APP_CFG_SECTION, APP_CFG_POSITION);
}
}
free(ctx.wfds);

list_for_each(ctx.events, struct event_queue, it) {
if (it->event.type == event_load) {
image_free(it->event.param.load.image);
// initial window size
value =
config_get_string(cfg, APP_CFG_SECTION, APP_CFG_SIZE, APP_FROM_PARENT);
if (strcmp(value, APP_FROM_PARENT) == 0) {
ctx.window.width = SIZE_FROM_PARENT;
ctx.window.height = SIZE_FROM_PARENT;
} else if (strcmp(value, APP_FROM_IMAGE) == 0) {
ctx.window.width = SIZE_FROM_IMAGE;
ctx.window.height = SIZE_FROM_IMAGE;
} else if (strcmp(value, APP_FULLSCREEN) == 0) {
ctx.window.width = SIZE_FULLSCREEN;
ctx.window.height = SIZE_FULLSCREEN;
} else {
ssize_t width, height;
struct str_slice slices[2];
if (str_split(value, ',', slices, 2) == 2 &&
str_to_num(slices[0].value, slices[0].len, &width, 0) &&
str_to_num(slices[1].value, slices[1].len, &height, 0) &&
width > 0 && width < 100000 && height > 0 && height < 100000) {
ctx.window.width = width;
ctx.window.height = height;
} else {
ctx.window.width = SIZE_FROM_PARENT;
ctx.window.height = SIZE_FROM_PARENT;
config_error_val(APP_CFG_SECTION, APP_CFG_SIZE);
}
free(it);
}
if (ctx.event_signal != -1) {
notification_free(ctx.event_signal);

// signal actions
value = config_get(cfg, APP_CFG_SECTION, APP_CFG_SIGUSR1);
if (value && !action_create(value, &ctx.sigusr1)) {
config_error_val(APP_CFG_SECTION, APP_CFG_SIGUSR1);
} else {
action_create("reload", &ctx.sigusr1);
}
value = config_get(cfg, APP_CFG_SECTION, APP_CFG_SIGUSR2);
if (value && !action_create(value, &ctx.sigusr2)) {
config_error_val(APP_CFG_SECTION, APP_CFG_SIGUSR2);
} else {
action_create("next_file", &ctx.sigusr2);
}
pthread_mutex_destroy(&ctx.events_lock);

action_free(&ctx.sigusr1);
action_free(&ctx.sigusr2);
// app id
value = config_get_string(cfg, APP_CFG_SECTION, APP_CFG_APP_ID, APP_NAME);
str_dup(value, &ctx.app_id);
}

bool app_init(const char** sources, size_t num)
bool app_init(struct config* cfg, const char** sources, size_t num)
{
bool force_load = false;
struct image* first_image;
struct sigaction sigact;

load_config(cfg);

// compose image list
if (num == 0) {
// no input files specified, use all from the current directory
Expand All @@ -422,7 +380,7 @@ bool app_init(const char** sources, size_t num)
sources = &stdin_name;
}
}
if (image_list_init(sources, num) == 0) {
if (image_list_init(cfg, sources, num) == 0) {
if (force_load) {
fprintf(stderr, "%s: Unable to open\n", sources[0]);
} else {
Expand Down Expand Up @@ -467,11 +425,12 @@ bool app_init(const char** sources, size_t num)
pthread_mutex_init(&ctx.events_lock, NULL);

// initialize other subsystems
font_init();
info_init();
font_init(cfg);
info_init(cfg);
keybind_init(cfg);
loader_init();
viewer_init(ctx.ehandler == viewer_handle ? first_image : NULL);
gallery_init(ctx.ehandler == gallery_handle ? first_image : NULL);
viewer_init(cfg, ctx.ehandler == viewer_handle ? first_image : NULL);
gallery_init(cfg, ctx.ehandler == gallery_handle ? first_image : NULL);

// set mode for info
if (info_enabled()) {
Expand All @@ -489,6 +448,37 @@ bool app_init(const char** sources, size_t num)
return true;
}

void app_destroy(void)
{
loader_destroy();
gallery_destroy();
viewer_destroy();
ui_destroy();
image_list_destroy();
keybind_destroy();
info_destroy();
font_destroy();

for (size_t i = 0; i < ctx.wfds_num; ++i) {
close(ctx.wfds[i].fd);
}
free(ctx.wfds);

list_for_each(ctx.events, struct event_queue, it) {
if (it->event.type == event_load) {
image_free(it->event.param.load.image);
}
free(it);
}
if (ctx.event_signal != -1) {
notification_free(ctx.event_signal);
}
pthread_mutex_destroy(&ctx.events_lock);

action_free(&ctx.sigusr1);
action_free(&ctx.sigusr2);
}

void app_watch(int fd, fd_callback cb, void* data)
{
const size_t sz = (ctx.wfds_num + 1) * sizeof(*ctx.wfds);
Expand Down
16 changes: 6 additions & 10 deletions src/application.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -28,23 +28,19 @@
typedef void (*fd_callback)(void* data);

/**
* Create global application context.
* Initialize global application context.
* @param cfg config instance
* @param sources list of sources
* @param num number of sources in the list
* @return true if application initialized successfully
*/
void app_create(void);
bool app_init(struct config* cfg, const char** sources, size_t num);

/**
* Destroy global application context.
*/
void app_destroy(void);

/**
* Initialize global application context.
* @param sources list of sources
* @param num number of sources in the list
* @return true if application initialized successfully
*/
bool app_init(const char** sources, size_t num);

/**
* Add file descriptor for polling in main loop.
* @param fd file descriptor for polling
Expand Down
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