opt: optimize code struct

src/fetch/common.h

@@ -0,0 +1,135 @@
+pid_t getparentprocess(pid_t p) {
+	unsigned int v = 0;
+
+	FILE *f;
+	char buf[256];
+	snprintf(buf, sizeof(buf) - 1, "/proc/%u/stat", (unsigned)p);
+
+	if (!(f = fopen(buf, "r")))
+		return 0;
+
+	// 检查fscanf返回值，确保成功读取了1个参数
+	if (fscanf(f, "%*u %*s %*c %u", &v) != 1) {
+		fclose(f);
+		return 0;
+	}
+
+	fclose(f);
+
+	return (pid_t)v;
+}
+
+char *get_autostart_path(char *autostart_path, unsigned int buf_size) {
+	const char *maomaoconfig = getenv("MAOMAOCONFIG");
+
+	if (maomaoconfig && maomaoconfig[0] != '\0') {
+		snprintf(autostart_path, buf_size, "%s/autostart.sh", maomaoconfig);
+	} else {
+		const char *homedir = getenv("HOME");
+		if (!homedir) {
+			fprintf(stderr, "Error: HOME environment variable not set.\n");
+			return NULL;
+		}
+		snprintf(autostart_path, buf_size, "%s/.config/maomao/autostart.sh",
+				 homedir);
+	}
+
+	return autostart_path;
+}
+
+char *get_layout_abbr(const char *full_name) {
+	// 1. 尝试在映射表中查找
+	for (int i = 0; layout_mappings[i].full_name != NULL; i++) {
+		if (strcmp(full_name, layout_mappings[i].full_name) == 0) {
+			return strdup(layout_mappings[i].abbr);
+		}
+	}
+
+	// 2. 尝试从名称中提取并转换为小写
+	const char *open = strrchr(full_name, '(');
+	const char *close = strrchr(full_name, ')');
+	if (open && close && close > open) {
+		unsigned int len = close - open - 1;
+		if (len > 0 && len <= 4) {
+			char *abbr = malloc(len + 1);
+			if (abbr) {
+				// 提取并转换为小写
+				for (unsigned int j = 0; j < len; j++) {
+					abbr[j] = tolower(open[j + 1]);
+				}
+				abbr[len] = '\0';
+				return abbr;
+			}
+		}
+	}
+
+	// 3. 提取前2-3个字母并转换为小写
+	char *abbr = malloc(4);
+	if (abbr) {
+		unsigned int j = 0;
+		for (unsigned int i = 0; full_name[i] != '\0' && j < 3; i++) {
+			if (isalpha(full_name[i])) {
+				abbr[j++] = tolower(full_name[i]);
+			}
+		}
+		abbr[j] = '\0';
+
+		// 确保至少2个字符
+		if (j >= 2)
+			return abbr;
+		free(abbr);
+	}
+
+	// 4. 回退方案：使用首字母小写
+	char *fallback = malloc(3);
+	if (fallback) {
+		fallback[0] = tolower(full_name[0]);
+		fallback[1] = full_name[1] ? tolower(full_name[1]) : '\0';
+		fallback[2] = '\0';
+		return fallback;
+	}
+
+	// 5. 最终回退：返回 "xx"
+	return strdup("xx");
+}
+
+void xytonode(double x, double y, struct wlr_surface **psurface, Client **pc,
+			  LayerSurface **pl, double *nx, double *ny) {
+	struct wlr_scene_node *node, *pnode;
+	struct wlr_surface *surface = NULL;
+	Client *c = NULL;
+	LayerSurface *l = NULL;
+	int layer;
+
+	for (layer = NUM_LAYERS - 1; !surface && layer >= 0; layer--) {
+
+		// ignore text-input layer
+		if (layer == LyrIMPopup)
+			continue;
+
+		if (layer == LyrFadeOut)
+			continue;
+
+		if (!(node = wlr_scene_node_at(&layers[layer]->node, x, y, nx, ny)))
+			continue;
+
+		if (node->type == WLR_SCENE_NODE_BUFFER)
+			surface = wlr_scene_surface_try_from_buffer(
+						  wlr_scene_buffer_from_node(node))
+						  ->surface;
+		/* Walk the tree to find a node that knows the client */
+		for (pnode = node; pnode && !c; pnode = &pnode->parent->node)
+			c = pnode->data;
+		if (c && c->type == LayerShell) {
+			c = NULL;
+			l = pnode->data;
+		}
+	}
+
+	if (psurface)
+		*psurface = surface;
+	if (pc)
+		*pc = c;
+	if (pl)
+		*pl = l;
+}