mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-11-18 17:29:17 +01:00
236 lines
6.0 KiB
C++
236 lines
6.0 KiB
C++
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/****************************************************************************
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* libwiigui Template
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* Tantric 2009
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*
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* modified by dimok
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*
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* filebrowser.cpp
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*
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* Generic file routines - reading, writing, browsing
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***************************************************************************/
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#include <gccore.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wiiuse/wpad.h>
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#include <sys/dir.h>
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#include <malloc.h>
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#include "filebrowser.h"
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#include "menu.h"
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BROWSERINFO browser;
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BROWSERENTRY * browserList = NULL; // list of files/folders in browser
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/****************************************************************************
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* ResetBrowser()
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* Clears the file browser memory, and allocates one initial entry
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***************************************************************************/
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void ResetBrowser()
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{
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browser.numEntries = 0;
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browser.selIndex = 0;
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browser.pageIndex = 0;
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// Clear any existing values
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if(browserList != NULL)
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{
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free(browserList);
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browserList = NULL;
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}
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// set aside space for 1 entry
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browserList = (BROWSERENTRY *)malloc(sizeof(BROWSERENTRY));
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memset(browserList, 0, sizeof(BROWSERENTRY));
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}
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/****************************************************************************
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* UpdateDirName()
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* Update curent directory name for file browser
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***************************************************************************/
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int UpdateDirName()
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{
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int size=0;
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char * test;
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char temp[1024];
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/* current directory doesn't change */
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if (strcmp(browserList[browser.selIndex].filename,".") == 0)
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{
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return 0;
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}
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/* go up to parent directory */
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else if (strcmp(browserList[browser.selIndex].filename,"..") == 0)
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{
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/* determine last subdirectory namelength */
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sprintf(temp,"%s",browser.dir);
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test = strtok(temp,"/");
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while (test != NULL)
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{
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size = strlen(test);
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test = strtok(NULL,"/");
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}
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/* remove last subdirectory name */
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size = strlen(browser.dir) - size - 1;
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browser.dir[size] = 0;
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return 1;
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}
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/* Open a directory */
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else
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{
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/* test new directory namelength */
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if ((strlen(browser.dir)+1+strlen(browserList[browser.selIndex].filename)) < MAXPATHLEN)
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{
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/* update current directory name */
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sprintf(browser.dir, "%s/%s",browser.dir, browserList[browser.selIndex].filename);
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return 1;
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}
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else
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{
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return -1;
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}
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}
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}
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/****************************************************************************
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* FileSortCallback
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*
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* Quick sort callback to sort file entries with the following order:
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* .
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* ..
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* <dirs>
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* <files>
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***************************************************************************/
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int FileSortCallback(const void *f1, const void *f2)
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{
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/* Special case for implicit directories */
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if(((BROWSERENTRY *)f1)->filename[0] == '.' || ((BROWSERENTRY *)f2)->filename[0] == '.')
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{
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if(strcmp(((BROWSERENTRY *)f1)->filename, ".") == 0) { return -1; }
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if(strcmp(((BROWSERENTRY *)f2)->filename, ".") == 0) { return 1; }
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if(strcmp(((BROWSERENTRY *)f1)->filename, "..") == 0) { return -1; }
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if(strcmp(((BROWSERENTRY *)f2)->filename, "..") == 0) { return 1; }
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}
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/* If one is a file and one is a directory the directory is first. */
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if(((BROWSERENTRY *)f1)->isdir && !(((BROWSERENTRY *)f2)->isdir)) return -1;
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if(!(((BROWSERENTRY *)f1)->isdir) && ((BROWSERENTRY *)f2)->isdir) return 1;
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return stricmp(((BROWSERENTRY *)f1)->filename, ((BROWSERENTRY *)f2)->filename);
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}
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/***************************************************************************
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* Browse subdirectories
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**************************************************************************/
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int
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ParseDirectory()
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{
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DIR_ITER *dir = NULL;
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char fulldir[MAXPATHLEN];
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char filename[MAXPATHLEN];
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struct stat filestat;
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// reset browser
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ResetBrowser();
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// open the directory
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sprintf(fulldir, "%s%s", browser.rootdir, browser.dir); // add currentDevice to path
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dir = diropen(fulldir);
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// if we can't open the dir, try opening the root dir
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if (dir == NULL)
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{
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sprintf(browser.dir,"/");
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dir = diropen(browser.rootdir);
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if (dir == NULL)
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{
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return -1;
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}
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}
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// index files/folders
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int entryNum = 0;
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while(dirnext(dir,filename,&filestat) == 0)
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{
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if(strcmp(filename,".") != 0)
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{
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BROWSERENTRY * newBrowserList = (BROWSERENTRY *)realloc(browserList, (entryNum+1) * sizeof(BROWSERENTRY));
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if(!newBrowserList) // failed to allocate required memory
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{
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ResetBrowser();
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entryNum = -1;
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break;
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}
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else
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{
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browserList = newBrowserList;
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}
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memset(&(browserList[entryNum]), 0, sizeof(BROWSERENTRY)); // clear the new entry
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strncpy(browserList[entryNum].filename, filename, MAXJOLIET);
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if(strcmp(filename,"..") == 0)
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{
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sprintf(browserList[entryNum].displayname, "..");
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}
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else
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{
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strcpy(browserList[entryNum].displayname, filename); // crop name for display
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}
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browserList[entryNum].length = filestat.st_size;
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browserList[entryNum].isdir = (filestat.st_mode & _IFDIR) == 0 ? 0 : 1; // flag this as a dir
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entryNum++;
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}
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}
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// close directory
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dirclose(dir);
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// Sort the file list
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qsort(browserList, entryNum, sizeof(BROWSERENTRY), FileSortCallback);
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browser.numEntries = entryNum;
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return entryNum;
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}
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/****************************************************************************
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* BrowserChangeFolder
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*
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* Update current directory and set new entry list if directory has changed
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***************************************************************************/
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int BrowserChangeFolder()
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{
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if(!UpdateDirName())
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return -1;
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ParseDirectory();
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return browser.numEntries;
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}
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/****************************************************************************
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* BrowseDevice
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* Displays a list of files on the selected device
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***************************************************************************/
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int BrowseDevice(int device)
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{
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sprintf(browser.dir, "/");
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switch(device)
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{
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case SD:
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sprintf(browser.rootdir, "SD:");
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break;
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case USB:
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sprintf(browser.rootdir, "USB:");
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break;
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}
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ParseDirectory(); // Parse root directory
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return browser.numEntries;
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}
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