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