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198 lines (169 loc) · 6.68 KB
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Copy pathfilelist.c
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198 lines (169 loc) · 6.68 KB
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#include "includes.h"
#include "types.h"
#include "globals.h"
int compare_nodes(FileNode *a, FileNode *b, SortOrders sort_order) {
int result = 0;
int dirs_first = sort_order >= SORT_BY_NAME_DIRSFIRST_ASC;
// Check if either node is ".."
if (strcmp(a->name, "..") == 0) return -1;
if (strcmp(b->name, "..") == 0) return 1;
if (dirs_first && (a->is_dir != b->is_dir)) {
return a->is_dir ? -1 : 1;
}
int order=sort_order%6; // Name, size, time; then the same three in reverse.
switch (order%3) {
case SORT_BY_NAME_ASC:
// Keep dot-prefixed names first in both sort directions.
if ((a->name[0] == '.') != (b->name[0] == '.')) return a->name[0] == '.' ? -1 : 1;
result = strcmp(a->name, b->name);
break;
case SORT_BY_SIZE_ASC:
result = (a->size > b->size) - (a->size < b->size);
break;
case SORT_BY_TIME_ASC:
result = (a->mtime > b->mtime) - (a->mtime < b->mtime);
break;
}
return order >= 3 ? -result : result;
}
void sort_file_nodes(FileNode **head_ref, SortOrders sort_order) {
FileNode *left=*head_ref;
if (!left || !left->next) return;
FileNode *slow=left, *fast=left->next;
while (fast && fast->next) { slow=slow->next; fast=fast->next->next; }
FileNode *right=slow->next;
slow->next=NULL;
sort_file_nodes(&left, sort_order);
sort_file_nodes(&right, sort_order);
FileNode **tail=head_ref;
while (left && right)
{
FileNode **next=compare_nodes(left, right, sort_order) <= 0 ? &left : &right;
*tail=*next;
*next=(*next)->next;
tail=&(*tail)->next;
}
*tail=left ? left : right;
}
int update_panel_files(PanelProp *panel) {
DIR *dir;
struct dirent *entry;
struct stat file_stat;
struct stat link_stat;
FileNode *head = NULL, *current = NULL, *original_head = NULL;
if ((dir = opendir(panel->path)) == NULL) return -1;
int had_selection=panel->num_selected_files;
original_head = panel->files;
panel->files = NULL;
panel->files_count = 0;
panel->num_selected_files = 0;
panel->bytes_selected_files = 0;
while ((entry = readdir(dir)) != NULL) {
if (strcmp(entry->d_name, ".") == 0) continue;
if (strcmp(entry->d_name, "..") == 0 && strcmp(panel->path, "/") == 0) continue;
char full_path[CMD_MAX];
snprintf(full_path, sizeof(full_path), "%s/%s", panel->path, entry->d_name);
if (lstat(full_path, &file_stat) != 0) continue;
FileNode *new_node = (FileNode*) calloc(1,sizeof(FileNode));
if (!new_node) break;
panel->files_count++;
new_node->name = strdup(entry->d_name);
if (!new_node->name) { free(new_node); panel->files_count--; break; }
new_node->mtime = file_stat.st_mtime;
new_node->size = file_stat.st_size;
new_node->chmod = file_stat.st_mode;
new_node->chown = file_stat.st_uid;
new_node->is_dir = S_ISDIR(file_stat.st_mode);
new_node->is_executable = (file_stat.st_mode & S_IXUSR) || (file_stat.st_mode & S_IXGRP) || (file_stat.st_mode & S_IXOTH);
new_node->is_link = S_ISLNK(file_stat.st_mode);
new_node->is_device = S_ISBLK(file_stat.st_mode) || S_ISCHR(file_stat.st_mode);
if (new_node->is_link) {
char target[CMD_MAX];
ssize_t len = readlink(full_path, target, sizeof(target) - 1);
if (len != -1) {
target[len] = '\0';
new_node->link_target = strdup(target);
}
if (stat(full_path, &link_stat) != 0) {
new_node->is_link_broken = 1; // Link is broken
} else {
new_node->is_link_to_dir = S_ISDIR(link_stat.st_mode);
}
}
if (new_node->is_link_to_dir) new_node->is_dir = 1;
// Check if this file was selected in the original list
FileNode *old_node = had_selection ? original_head : NULL;
while (old_node != NULL) {
if (old_node->is_selected && strcmp(new_node->name, old_node->name) == 0) {
select_file(panel, new_node, 1);
break;
}
old_node = old_node->next;
}
if (head == NULL) {
head = new_node;
current = head;
} else {
current->next = new_node;
current = new_node;
}
}
closedir(dir);
panel->files = head;
free_file_nodes(original_head);
return panel->files_count;
}
void free_file_nodes(FileNode *head) {
FileNode *tmp;
while (head != NULL) {
free(head->name);
free(head->link_target);
tmp = head;
head = head->next;
free(tmp);
}
}
int change_panel_directory(PanelProp *panel, const char *path)
{
char input[CMD_MAX];
const char *base=path[0] == '~' && (!path[1] || path[1] == '/') ? getenv("HOME") : NULL;
int length=base ? snprintf(input, sizeof(input), "%s%s", base, path+1) :
snprintf(input, sizeof(input), "%s%s%s", path[0] == '/' ? "" : panel->path,
path[0] == '/' ? "" : "/", path);
if (length < 0 || length >= sizeof(input)) { errno=ENAMETOOLONG; return -1; }
char *resolved=realpath(input, NULL);
if (!resolved) return -1;
if (strlen(resolved) >= sizeof(panel->path)) { free(resolved); errno=ENAMETOOLONG; return -1; }
if (access(resolved, R_OK|X_OK) != 0) { int error=errno; free(resolved); errno=error; return -1; }
PanelProp next={.sort_order=panel->sort_order};
strcpy(next.path, resolved);
free(resolved);
if (update_panel_files(&next) < 0) return -1;
sort_file_nodes(&next.files, next.sort_order);
free_file_nodes(panel->files);
*panel=next;
return 0;
}
void dive_into_directory(FileNode *current) {
char target[CMD_MAX], name[CMD_MAX]="";
if (strcmp(current->name, "..") == 0) {
// Store the last directory name before going up
char * last_slash = strrchr(active_panel->path, '/');
snprintf(name, sizeof(name), "%s", last_slash+1);
// Go back to upper dir
snprintf(target, sizeof(target), "%s", active_panel->path);
char *slash=strrchr(target, '/');
slash[slash == target]='\0';
} else {
// Dive into the selected directory
int length=snprintf(target, sizeof(target), "%s/%s", active_panel->path, current->name);
if (length >= sizeof(target)) { show_errormsg("Directory path is too long"); return; }
}
if (change_panel_directory(active_panel, target) != 0)
show_errormsg(SPRINTF("Cannot open directory:\n%s\n%s", target, strerror(errno)));
else
{
strcpy(active_panel->file_under_cursor, name);
update_panel_cursor();
}
}