#define _POSIX_C_SOURCE 200809L
#include <json.h>
#include <linux/input-event-codes.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "log.h"
#include "swaybar/bar.h"
#include "swaybar/config.h"
#include "swaybar/i3bar.h"
#include "swaybar/input.h"
#include "swaybar/status_line.h"
void i3bar_block_unref(struct i3bar_block *block) {
if (block == NULL) {
return;
}
if (--block->ref_count == 0) {
free(block->full_text);
free(block->short_text);
free(block->align);
free(block->min_width_str);
free(block->name);
free(block->instance);
free(block);
}
}
static void i3bar_parse_json(struct status_line *status,
struct json_object *json_array) {
struct i3bar_block *block, *tmp;
wl_list_for_each_safe(block, tmp, &status->blocks, link) {
wl_list_remove(&block->link);
i3bar_block_unref(block);
}
for (size_t i = 0; i < json_object_array_length(json_array); ++i) {
json_object *full_text, *short_text, *color, *min_width, *align, *urgent;
json_object *name, *instance, *separator, *separator_block_width;
json_object *background, *border, *border_top, *border_bottom;
json_object *border_left, *border_right, *markup;
json_object *json = json_object_array_get_idx(json_array, i);
if (!json) {
continue;
}
json_object_object_get_ex(json, "full_text", &full_text);
json_object_object_get_ex(json, "short_text", &short_text);
json_object_object_get_ex(json, "color", &color);
json_object_object_get_ex(json, "min_width", &min_width);
json_object_object_get_ex(json, "align", &align);
json_object_object_get_ex(json, "urgent", &urgent);
json_object_object_get_ex(json, "name", &name);
json_object_object_get_ex(json, "instance", &instance);
json_object_object_get_ex(json, "markup", &markup);
json_object_object_get_ex(json, "separator", &separator);
json_object_object_get_ex(json, "separator_block_width", &separator_block_width);
json_object_object_get_ex(json, "background", &background);
json_object_object_get_ex(json, "border", &border);
json_object_object_get_ex(json, "border_top", &border_top);
json_object_object_get_ex(json, "border_bottom", &border_bottom);
json_object_object_get_ex(json, "border_left", &border_left);
json_object_object_get_ex(json, "border_right", &border_right);
struct i3bar_block *block = calloc(1, sizeof(struct i3bar_block));
block->ref_count = 1;
block->full_text = full_text ?
strdup(json_object_get_string(full_text)) : NULL;
block->short_text = short_text ?
strdup(json_object_get_string(short_text)) : NULL;
if (color) {
const char *hexstring = json_object_get_string(color);
block->color_set = parse_color(hexstring, &block->color);
if (!block->color_set) {
sway_log(SWAY_ERROR, "Invalid block color: %s", hexstring);
}
}
if (min_width) {
json_type type = json_object_get_type(min_width);
if (type == json_type_int) {
block->min_width = json_object_get_int(min_width);
} else if (type == json_type_string) {
/* the width will be calculated when rendering */
block->min_width_str = strdup(json_object_get_string(min_width));
}
}
block->align = strdup(align ? json_object_get_string(align) : "left");
block->urgent = urgent ? json_object_get_int(urgent) : false;
block->name = name ? strdup(json_object_get_string(name)) : NULL;
block->instance = instance ?
strdup(json_object_get_string(instance)) : NULL;
if (markup) {
block->markup = false;
const char *markup_str = json_object_get_string(markup);
if (strcmp(markup_str, "pango") == 0) {
block->markup = true;
}
}
block->separator = separator ? json_object_get_int(separator) : true;
block->separator_block_width = separator_block_width ?
json_object_get_int(separator_block_width) : 9;
// Airblader features
const char *hex = background ? json_object_get_string(background) : NULL;
if (hex && !parse_color(hex, &block->background)) {
sway_log(SWAY_ERROR, "Ignoring invalid block background: %s", hex);
}
hex = border ? json_object_get_string(border) : NULL;
if (hex && !parse_color(hex, &block->border)) {
sway_log(SWAY_ERROR, "Ignoring invalid block border: %s", hex);
}
block->border_top = border_top ? json_object_get_int(border_top) : 1;
block->border_bottom = border_bottom ?
json_object_get_int(border_bottom) : 1;
block->border_left = border_left ? json_object_get_int(border_left) : 1;
block->border_right = border_right ?
json_object_get_int(border_right) : 1;
wl_list_insert(&status->blocks, &block->link);
}
}
bool i3bar_handle_readable(struct status_line *status) {
while (!status->started) { // look for opening bracket
for (size_t c = 0; c < status->buffer_index; ++c) {
if (status->buffer[c] == '[') {
status->started = true;
status->buffer_index -= ++c;
memmove(status->buffer, &status->buffer[c], status->buffer_index);
break;
} else if (!isspace(status->buffer[c])) {
sway_log(SWAY_DEBUG, "Invalid i3bar json: expected '[' but encountered '%c'",
status->buffer[c]);
status_error(status, "[invalid i3bar json]");
return true;
}
}
if (status->started) {
break;
}
errno = 0;
ssize_t read_bytes = read(status->read_fd, status->buffer, status->buffer_size);
if (read_bytes > -1) {
status->buffer_index = read_bytes;
} else if (errno == EAGAIN) {
return false;
} else {
status_error(status, "[error reading from status command]");
return true;
}
}
struct json_object *last_object = NULL;
struct json_object *test_object;
size_t buffer_pos = 0;
while (true) {
// since the incoming stream is an infinite array
// parsing is split into two parts
// first, attempt to parse the current object, reading more if the
// parser indicates that the current object is incomplete, and failing
// if the parser fails
// second, look for separating comma, ignoring whitespace, failing if
// any other characters are encountered
if (status->expecting_comma) {
for (; buffer_pos < status->buffer_index; ++buffer_pos) {
if (status->buffer[buffer_pos] == ',') {
status->expecting_comma = false;
++buffer_pos;
break;
} else if (!isspace(status->buffer[buffer_pos])) {
sway_log(SWAY_DEBUG, "Invalid i3bar json: expected ',' but encountered '%c'",
status->buffer[buffer_pos]);
status_error(status, "[invalid i3bar json]");
return true;
}
}
if (buffer_pos < status->buffer_index) {
continue; // look for new object without reading more input
}
buffer_pos = status->buffer_index = 0;
} else {
test_object = json_tokener_parse_ex(status->tokener,
&status->buffer[buffer_pos], status->buffer_index - buffer_pos);
enum json_tokener_error err = json_tokener_get_error(status->tokener);
if (err == json_tokener_success) {
if (json_object_get_type(test_object) == json_type_array) {
if (last_object) {
json_object_put(last_object);
}
last_object = test_object;
} else {
json_object_put(test_object);
}
// in order to print the json for debugging purposes
// the last character is temporarily replaced with a null character
// (the last character is used in case the buffer is full)
char *last_char_pos =
&status->buffer[buffer_pos + status->tokener->char_offset - 1];
char last_char = *last_char_pos;
while (isspace(last_char)) {
last_char = *--last_char_pos;
}
*last_char_pos = '\0';
size_t offset = strspn(&status->buffer[buffer_pos], " \f\n\r\t\v");
sway_log(SWAY_DEBUG, "Received i3bar json: '%s%c'",
&status->buffer[buffer_pos + offset], last_char);
*last_char_pos = last_char;
buffer_pos += status->tokener->char_offset;
status->expecting_comma = true;
if (buffer_pos < status->buffer_index) {
continue; // look for comma without reading more input
}
buffer_pos = status->buffer_index = 0;
} else if (err == json_tokener_continue) {
json_tokener_reset(status->tokener);
if (status->buffer_index < status->buffer_size) {
// move the object to the start of the buffer
status->buffer_index -= buffer_pos;
memmove(status->buffer, &status->buffer[buffer_pos],
status->buffer_index);
buffer_pos = 0;
} else {
// expand buffer
status->buffer_size *= 2;
char *new_buffer = realloc(status->buffer, status->buffer_size);
if (new_buffer) {
status->buffer = new_buffer;
} else {
free(status->buffer);
status_error(status, "[failed to allocate buffer]");
return true;
}
}
} else {
char last_char = status->buffer[status->buffer_index - 1];
status->buffer[status->buffer_index - 1] = '\0';
sway_log(SWAY_DEBUG, "Failed to parse i3bar json - %s: '%s%c'",
json_tokener_error_desc(err), &status->buffer[buffer_pos], last_char);
status_error(status, "[failed to parse i3bar json]");
return true;
}
}
errno = 0;
ssize_t read_bytes = read(status->read_fd, &status->buffer[status->buffer_index],
status->buffer_size - status->buffer_index);
if (read_bytes > -1) {
status->buffer_index += read_bytes;
} else if (errno == EAGAIN) {
break;
} else {
status_error(status, "[error reading from status command]");
return true;
}
}
if (last_object) {
sway_log(SWAY_DEBUG, "Rendering last received json");
i3bar_parse_json(status, last_object);
json_object_put(last_object);
return true;
} else {
return false;
}
}
enum hotspot_event_handling i3bar_block_send_click(struct status_line *status,
struct i3bar_block *block, double x, double y, double rx, double ry,
double w, double h, int scale, uint32_t button) {
sway_log(SWAY_DEBUG, "block %s clicked", block->name);
if (!block->name || !status->click_events) {
return HOTSPOT_PROCESS;
}
struct json_object *event_json = json_object_new_object();
json_object_object_add(event_json, "name",
json_object_new_string(block->name));
if (block->instance) {
json_object_object_add(event_json, "instance",
json_object_new_string(block->instance));
}
json_object_object_add(event_json, "button",
json_object_new_int(event_to_x11_button(button)));
json_object_object_add(event_json, "event", json_object_new_int(button));
if (status->float_event_coords) {
json_object_object_add(event_json, "x", json_object_new_double(x));
json_object_object_add(event_json, "y", json_object_new_double(y));
json_object_object_add(event_json, "relative_x", json_object_new_double(rx));
json_object_object_add(event_json, "relative_y", json_object_new_double(ry));
json_object_object_add(event_json, "width", json_object_new_double(w));
json_object_object_add(event_json, "height", json_object_new_double(h));
} else {
json_object_object_add(event_json, "x", json_object_new_int(x));
json_object_object_add(event_json, "y", json_object_new_int(y));
json_object_object_add(event_json, "relative_x", json_object_new_int(rx));
json_object_object_add(event_json, "relative_y", json_object_new_int(ry));
json_object_object_add(event_json, "width", json_object_new_int(w));
json_object_object_add(event_json, "height", json_object_new_int(h));
}
json_object_object_add(event_json, "scale", json_object_new_int(scale));
if (dprintf(status->write_fd, "%s%s\n", status->clicked ? "," : "",
json_object_to_json_string(event_json)) < 0) {
status_error(status, "[failed to write click event]");
}
status->clicked = true;
json_object_put(event_json);
return HOTSPOT_IGNORE;
}
