mirror of
https://github.com/DreamMaoMao/maomaowm.git
synced 2026-05-02 06:46:29 -04:00
12fe0abca1
- Remove redundant null termination for short strings - Use descriptive variable names in cleanup loop - Cache strlen results to avoid O(n²) complexity in string concatenation - Add bounds checks before string operations Co-authored-by: squassina <8495707+squassina@users.noreply.github.com>
135 lines
No EOL
3 KiB
C
135 lines
No EOL
3 KiB
C
pid_t getparentprocess(pid_t p) {
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uint32_t v = 0;
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FILE *f;
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char buf[256];
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snprintf(buf, sizeof(buf) - 1, "/proc/%u/stat", (unsigned)p);
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if (!(f = fopen(buf, "r")))
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return 0;
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// 检查fscanf返回值，确保成功读取了1个参数
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if (fscanf(f, "%*u %*s %*c %u", &v) != 1) {
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fclose(f);
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return 0;
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}
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fclose(f);
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return (pid_t)v;
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}
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int32_t isdescprocess(pid_t p, pid_t c) {
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while (p != c && c != 0)
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c = getparentprocess(c);
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return (int32_t)c;
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}
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// Buffer size for layout abbreviations (must match kb_layout buffer in dwl-ipc.h)
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#define LAYOUT_ABBR_SIZE 32
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void get_layout_abbr(char *abbr, const char *full_name) {
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// 清空输出缓冲区
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abbr[0] = '\0';
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// 1. 尝试在映射表中查找
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for (int32_t i = 0; layout_mappings[i].full_name != NULL; i++) {
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if (strcmp(full_name, layout_mappings[i].full_name) == 0) {
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strncpy(abbr, layout_mappings[i].abbr, LAYOUT_ABBR_SIZE - 1);
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abbr[LAYOUT_ABBR_SIZE - 1] = '\0';
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return;
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}
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}
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// 2. 尝试从名称中提取并转换为小写
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const char *open = strrchr(full_name, '(');
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const char *close = strrchr(full_name, ')');
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if (open && close && close > open) {
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uint32_t len = close - open - 1;
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if (len > 0 && len <= 4) {
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// 提取并转换为小写
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for (uint32_t j = 0; j < len; j++) {
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abbr[j] = tolower(open[j + 1]);
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}
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abbr[len] = '\0';
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return;
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}
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}
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// 3. 提取前2-3个字母并转换为小写
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uint32_t j = 0;
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for (uint32_t i = 0; full_name[i] != '\0' && j < 3; i++) {
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if (isalpha(full_name[i])) {
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abbr[j++] = tolower(full_name[i]);
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}
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}
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abbr[j] = '\0';
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// 确保至少2个字符
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if (j >= 2) {
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return;
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}
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// 4. 回退方案：使用首字母小写
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if (j == 1) {
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abbr[1] = full_name[1] ? tolower(full_name[1]) : '\0';
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abbr[2] = '\0';
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} else {
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// 5. 最终回退：返回 "xx"
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// strncpy will null-terminate since source is shorter than buffer
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strncpy(abbr, "xx", LAYOUT_ABBR_SIZE - 1);
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}
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}
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void xytonode(double x, double y, struct wlr_surface **psurface, Client **pc,
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LayerSurface **pl, double *nx, double *ny) {
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struct wlr_scene_node *node, *pnode;
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struct wlr_surface *surface = NULL;
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Client *c = NULL;
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LayerSurface *l = NULL;
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int32_t layer;
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for (layer = NUM_LAYERS - 1; !surface && layer >= 0; layer--) {
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if (layer == LyrFadeOut)
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continue;
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if (!(node = wlr_scene_node_at(&layers[layer]->node, x, y, nx, ny)))
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continue;
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if (!node->enabled)
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continue;
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if (node->type == WLR_SCENE_NODE_BUFFER)
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surface = wlr_scene_surface_try_from_buffer(
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wlr_scene_buffer_from_node(node))
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->surface;
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else if (node->type == WLR_SCENE_NODE_RECT) {
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surface = NULL;
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break;
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}
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/* start from the topmost layer,
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find a sureface that can be focused by pointer,
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impopup neither a client nor a layer surface.*/
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if (layer == LyrIMPopup) {
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c = NULL;
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l = NULL;
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} else {
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for (pnode = node; pnode && !c; pnode = &pnode->parent->node)
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c = pnode->data;
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if (c && c->type == LayerShell) {
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c = NULL;
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l = pnode->data;
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}
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}
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}
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if (psurface)
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*psurface = surface;
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if (pc)
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*pc = c;
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if (pl)
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*pl = l;
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} |