refactor commands.c

sway/commands/resize.c

@@ -0,0 +1,122 @@
+#include <errno.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include "commands.h"
+#include "log.h"
+#include "resize.h"
+
+static struct cmd_results *cmd_resize_set(int argc, char **argv) {
+	struct cmd_results *error = NULL;
+	if ((error = checkarg(argc, "resize set", EXPECTED_AT_LEAST, 2))) {
+		return error;
+	}
+
+	if (strcasecmp(argv[0], "width") == 0 || strcasecmp(argv[0], "height") == 0) {
+		// handle `reset set width 100 px height 100 px` syntax, also allows
+		// specifying only one dimension for a `resize set`
+		int cmd_num = 0;
+		int dim;
+
+		while ((cmd_num + 1) < argc) {
+			dim = (int)strtol(argv[cmd_num + 1], NULL, 10);
+			if (errno == ERANGE || dim == 0) {
+				errno = 0;
+				return cmd_results_new(CMD_INVALID, "resize set",
+					"Expected 'resize set <width|height> <amount> [px] [<width|height> <amount> [px]]'");
+			}
+
+			if (strcasecmp(argv[cmd_num], "width") == 0) {
+				set_size(dim, true);
+			} else if (strcasecmp(argv[cmd_num], "height") == 0) {
+				set_size(dim, false);
+			} else {
+				return cmd_results_new(CMD_INVALID, "resize set",
+					"Expected 'resize set <width|height> <amount> [px] [<width|height> <amount> [px]]'");
+			}
+
+			cmd_num += 2;
+
+			if (cmd_num < argc && strcasecmp(argv[cmd_num], "px") == 0) {
+				// if this was `resize set width 400 px height 300 px`, disregard the `px` arg
+				cmd_num++;
+			}
+		}
+	} else {
+		// handle `reset set 100 px 100 px` syntax
+		int width = (int)strtol(argv[0], NULL, 10);
+		if (errno == ERANGE || width == 0) {
+			errno = 0;
+			return cmd_results_new(CMD_INVALID, "resize set",
+				"Expected 'resize set <width> [px] <height> [px]'");
+		}
+
+		int height_arg = 1;
+		if (strcasecmp(argv[1], "px") == 0) {
+			height_arg = 2;
+		}
+
+		int height = (int)strtol(argv[height_arg], NULL, 10);
+		if (errno == ERANGE || height == 0) {
+			errno = 0;
+			return cmd_results_new(CMD_INVALID, "resize set",
+				"Expected 'resize set <width> [px] <height> [px]'");
+		}
+
+		set_size(width, true);
+		set_size(height, false);
+	}
+
+	return cmd_results_new(CMD_SUCCESS, NULL, NULL);
+}
+
+struct cmd_results *cmd_resize(int argc, char **argv) {
+	struct cmd_results *error = NULL;
+	if (config->reading) return cmd_results_new(CMD_FAILURE, "resize", "Can't be used in config file.");
+	if (!config->active) return cmd_results_new(CMD_FAILURE, "resize", "Can only be used when sway is running.");
+
+	if (strcasecmp(argv[0], "set") == 0) {
+		return cmd_resize_set(argc - 1, &argv[1]);
+	}
+
+	if ((error = checkarg(argc, "resize", EXPECTED_AT_LEAST, 2))) {
+		return error;
+	}
+
+	int dim_arg = argc - 1;
+
+	enum resize_dim_types dim_type = RESIZE_DIM_DEFAULT;
+	if (strcasecmp(argv[dim_arg], "ppt") == 0) {
+		dim_type = RESIZE_DIM_PPT;
+		dim_arg--;
+	} else if (strcasecmp(argv[dim_arg], "px") == 0) {
+		dim_type = RESIZE_DIM_PX;
+		dim_arg--;
+	}
+
+	int amount = (int)strtol(argv[dim_arg], NULL, 10);
+	if (errno == ERANGE || amount == 0) {
+		errno = 0;
+		amount = 10; // this is the default resize dimension used by i3 for both px and ppt
+		sway_log(L_DEBUG, "Tried to get resize dimension out of '%s' but failed; setting dimension to default %d",
+			argv[dim_arg], amount);
+	}
+
+	bool use_width = false;
+	if (strcasecmp(argv[1], "width") == 0) {
+		use_width = true;
+	} else if (strcasecmp(argv[1], "height") != 0) {
+		return cmd_results_new(CMD_INVALID, "resize",
+			"Expected 'resize <shrink|grow> <width|height> [<amount>] [px|ppt]'");
+	}
+
+	if (strcasecmp(argv[0], "shrink") == 0) {
+		amount *= -1;
+	} else if (strcasecmp(argv[0], "grow") != 0) {
+		return cmd_results_new(CMD_INVALID, "resize",
+			"Expected 'resize <shrink|grow> <width|height> [<amount>] [px|ppt]'");
+	}
+
+	resize(amount, use_width, dim_type);
+	return cmd_results_new(CMD_SUCCESS, NULL, NULL);
+}