mirror of https://github.com/swaywm/sway.git
82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
#define _POSIX_C_SOURCE
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.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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#include "readline.h"
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bool handle_status_readable(struct status_line *status) {
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char *line = read_line_buffer(status->read,
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status->buffer, status->buffer_size);
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switch (status->protocol) {
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case PROTOCOL_I3BAR:
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// TODO
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break;
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case PROTOCOL_TEXT:
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status->text = line;
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return true;
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case PROTOCOL_UNDEF:
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if (!line) {
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return false;
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}
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if (line[0] == '{') {
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// TODO: JSON
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} else {
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status->text = line;
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status->protocol = PROTOCOL_TEXT;
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}
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return false;
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}
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return false;
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}
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struct status_line *status_line_init(char *cmd) {
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struct status_line *status = calloc(1, sizeof(struct status_line));
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status->buffer_size = 4096;
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status->buffer = malloc(status->buffer_size);
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int pipe_read_fd[2];
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int pipe_write_fd[2];
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if (pipe(pipe_read_fd) != 0 || pipe(pipe_write_fd) != 0) {
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wlr_log(L_ERROR, "Unable to create pipes for status_command fork");
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exit(1);
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}
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status->pid = fork();
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if (status->pid == 0) {
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dup2(pipe_read_fd[1], STDOUT_FILENO);
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close(pipe_read_fd[0]);
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close(pipe_read_fd[1]);
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dup2(pipe_write_fd[0], STDIN_FILENO);
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close(pipe_write_fd[0]);
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close(pipe_write_fd[1]);
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char *const _cmd[] = { "sh", "-c", cmd, NULL, };
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execvp(_cmd[0], _cmd);
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exit(1);
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}
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close(pipe_read_fd[1]);
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status->read_fd = pipe_read_fd[0];
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fcntl(status->read_fd, F_SETFL, O_NONBLOCK);
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close(pipe_write_fd[0]);
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status->write_fd = pipe_write_fd[1];
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fcntl(status->write_fd, F_SETFL, O_NONBLOCK);
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status->read = fdopen(status->read_fd, "r");
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status->write = fdopen(status->write_fd, "w");
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return status;
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}
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void status_line_free(struct status_line *status) {
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close(status->read_fd);
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close(status->write_fd);
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kill(status->pid, SIGTERM);
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free(status);
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}
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