Implement criteria commands

Implements the following commands:

* for_window [...] <cmdlist>
* assign [...] <workspace>

1 files changed, 41 insertions, 0 deletions

diff --git a/sway/commands/for_window.c b/sway/commands/for_window.c
new file mode 100644
index 00000000..a6aa7187
--- /dev/null
+++ b/sway/commands/for_window.c
@@ -0,0 +1,41 @@
+#define _XOPEN_SOURCE 500
+#include <string.h>
+#include "sway/commands.h"
+#include "sway/criteria.h"
+#include "list.h"
+#include "log.h"
+#include "stringop.h"
+
+struct cmd_results *cmd_for_window(int argc, char **argv) {
+        struct cmd_results *error = NULL;
+        if ((error = checkarg(argc, "for_window", EXPECTED_AT_LEAST, 2))) {
+                return error;
+        }
+        // add command to a criteria/command pair that is run against views when they appear.
+        char *criteria = argv[0], *cmdlist = join_args(argv + 1, argc - 1);
+
+        struct criteria *crit = malloc(sizeof(struct criteria));
+        if (!crit) {
+                return cmd_results_new(CMD_FAILURE, "for_window", "Unable to allocate criteria");
+        }
+        crit->crit_raw = strdup(criteria);
+        crit->cmdlist = cmdlist;
+        crit->tokens = create_list();
+        char *err_str = extract_crit_tokens(crit->tokens, crit->crit_raw);
+
+        if (err_str) {
+                error = cmd_results_new(CMD_INVALID, "for_window", err_str);
+                free(err_str);
+                free_criteria(crit);
+        } else if (crit->tokens->length == 0) {
+                error = cmd_results_new(CMD_INVALID, "for_window", "Found no name/value pairs in criteria");
+                free_criteria(crit);
+        } else if (list_seq_find(config->criteria, criteria_cmp, crit) != -1) {
+                wlr_log(L_DEBUG, "for_window: Duplicate, skipping.");
+                free_criteria(crit);
+        } else {
+                wlr_log(L_DEBUG, "for_window: '%s' -> '%s' added", crit->crit_raw, crit->cmdlist);
+                list_add(config->criteria, crit);
+        }
+        return error ? error : cmd_results_new(CMD_SUCCESS, NULL, NULL);
+}