122 lines
2.4 KiB
C
122 lines
2.4 KiB
C
#include "spawn.h"
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#include <stddef.h>
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#include <stdio.h>
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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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#define MAX_ARGS_COUNT 20
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#define ARGS_SIZE (MAX_ARGS_COUNT + 1)
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#define MON_ARG_SIZE 2
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struct Command {
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const char *name;
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size_t monitor_arg_index;
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const char *args[ARGS_SIZE];
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};
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static struct Command commands[] = {
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{
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.name = "menu",
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.monitor_arg_index = 2,
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.args = {
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"dmenu_run",
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// monitor
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"-m",
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"0",
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// font
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"-fn",
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"monospace:size=10",
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// color: gray 1
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"-nb",
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"#222222",
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// color: gray 3
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"-nf",
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"#bbbbbb",
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// color: cyan
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"-sb",
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"#005577",
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// color: gray 4
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"-sf",
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"#eeeeee",
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NULL,
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},
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},
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{
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.name = "term",
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.monitor_arg_index = -1,
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.args = { "st", NULL },
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},
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{
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.name = "firefox",
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.monitor_arg_index = -1,
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.args = { "firefox", NULL },
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},
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};
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void spawn_command(
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const char *const name,
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void (*const callback)(),
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const int monitor
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) {
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if (name == NULL || monitor < 0 || monitor > 9) return;
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for (
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size_t command_index = 0;
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command_index < sizeof(commands) / sizeof(struct Command);
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++command_index
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) {
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const struct Command *const command = &commands[command_index];
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if (strcmp(name, command->name) != 0) continue;
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// We discard const modifier
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// because we will only change newly allocated version.
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char **args = (char**)command->args;
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if (command->monitor_arg_index != -1) {
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args = malloc(sizeof(char*) * ARGS_SIZE);
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if (args == NULL) break;
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for (size_t arg_index = 0;; ++arg_index) {
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// We discard const modifier
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// because we will only change newly allocated version.
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args[arg_index] = (char*)command->args[arg_index];
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if (args[arg_index] == NULL) break;
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}
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args[command->monitor_arg_index] =
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malloc(sizeof(char) * MON_ARG_SIZE);
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if (args[command->monitor_arg_index] == NULL) {
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free(args);
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break;
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}
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args[command->monitor_arg_index][0] = '0' + monitor;
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args[command->monitor_arg_index][1] = '\0';
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}
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if (fork() == 0) {
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// TODO: DRY (see the same code below)
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if (command->monitor_arg_index != -1) {
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free(args[command->monitor_arg_index]);
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free(args);
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}
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callback();
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setsid();
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execvp(args[0], args);
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fprintf(stderr, "polytreewm: execvp %s", args[0]);
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perror(" failed");
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exit(EXIT_SUCCESS);
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}
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if (command->monitor_arg_index != -1) {
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free(args[command->monitor_arg_index]);
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free(args);
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}
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break;
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}
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}
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