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#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <wlr/util/log.h>
#include "swaybar/config.h"
#include "swaybar/status_line.h"
static void i3bar_parse_json(struct status_line *status, const char *text) {
wlr_log(L_DEBUG, "got json: %s", text);
}
int i3bar_readable(struct status_line *status) {
struct i3bar_protocol_state *state = &status->i3bar_state;
char *cur = &state->buffer[state->buffer_index];
ssize_t n = read(status->read_fd, cur,
state->buffer_size - state->buffer_index);
if (n == 0) {
return 0;
}
if (n == (ssize_t)(state->buffer_size - state->buffer_index)) {
state->buffer_size = state->buffer_size * 2;
char *new_buffer = realloc(state->buffer, state->buffer_size);
if (!new_buffer) {
free(state->buffer);
status_error(status, "[failed to allocate buffer]");
return -1;
}
state->buffer = new_buffer;
}
int handled = 0;
while (*cur) {
if (state->nodes[state->depth] == JSON_NODE_STRING) {
if (!state->escape && *cur == '"') {
--state->depth;
}
state->escape = !state->escape && *cur == '\\';
} else {
switch (*cur) {
case '[':
++state->depth;
if (state->depth >
sizeof(state->nodes) / sizeof(state->nodes[0])) {
status_error(status, "[i3bar json too deep]");
return -1;
}
state->nodes[state->depth] = JSON_NODE_ARRAY;
if (state->depth == 1) {
state->current_node = cur;
}
break;
case ']':
if (state->nodes[state->depth] != JSON_NODE_ARRAY) {
status_error(status, "[failed to parse i3bar json]");
return -1;
}
--state->depth;
if (state->depth == 0) {
// cur[1] is valid since cur[0] != '\0'
char p = cur[1];
cur[1] = '\0';
i3bar_parse_json(status, state->current_node);
cur[1] = p;
memmove(state->buffer, cur,
state->buffer_size - (cur - state->buffer));
++handled;
cur = state->buffer;
state->current_node = cur + 1;
}
break;
case '"':
++state->depth;
if (state->depth >
sizeof(state->nodes) / sizeof(state->nodes[0])) {
status_error(status, "[i3bar json too deep]");
return -1;
}
state->nodes[state->depth] = JSON_NODE_STRING;
break;
}
}
++cur;
}
state->buffer_index = cur - state->buffer;
return handled;
}
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