usbloadergx/source/prompts/filebrowser.cpp

/****************************************************************************
 * libwiigui Template
 * Tantric 2009
 *
 * modified by dimok
 *
 * filebrowser.cpp
 *
 * Generic file routines - reading, writing, browsing
 ***************************************************************************/

#include <gccore.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wiiuse/wpad.h>
#include <sys/dir.h>
#include <malloc.h>

#include "filebrowser.h"
#include "menu.h"

#include "language/gettext.h"
#include "PromptWindows.h"
#include "libwiigui/gui.h"
#include "sys.h"

/*** Extern variables ***/
extern GuiWindow * mainWindow;
extern u8 shutdown;
extern u8 reset;

/*** Extern functions ***/
extern void ResumeGui();
extern void HaltGui();

BROWSERINFO browser;
BROWSERENTRY * browserList = NULL; // list of files/folders in browser

/****************************************************************************
 * ResetBrowser()
 * Clears the file browser memory, and allocates one initial entry
 ***************************************************************************/
void ResetBrowser()
{
	browser.numEntries = 0;
	browser.selIndex = 0;
	browser.pageIndex = 0;

	// Clear any existing values
	if(browserList != NULL)
	{
		free(browserList);
		browserList = NULL;
	}
	// set aside space for 1 entry
	browserList = (BROWSERENTRY *)malloc(sizeof(BROWSERENTRY));
	memset(browserList, 0, sizeof(BROWSERENTRY));
}

/****************************************************************************
 * UpdateDirName()
 * Update curent directory name for file browser
 ***************************************************************************/
int UpdateDirName()
{
	int size=0;
	char * test;
	char temp[1024];

	/* current directory doesn't change */
	if (strcmp(browserList[browser.selIndex].filename,".") == 0)
	{
		return 0;
	}
	/* go up to parent directory */
	else if (strcmp(browserList[browser.selIndex].filename,"..") == 0)
	{
		/* determine last subdirectory namelength */
		sprintf(temp,"%s",browser.dir);
		test = strtok(temp,"/");
		while (test != NULL)
		{
			size = strlen(test);
			test = strtok(NULL,"/");
		}

		/* remove last subdirectory name */
		size = strlen(browser.dir) - size - 1;
		browser.dir[size] = 0;

		return 1;
	}
	/* Open a directory */
	else
	{
		/* test new directory namelength */
		if ((strlen(browser.dir)+1+strlen(browserList[browser.selIndex].filename)) < MAXPATHLEN)
		{
			/* update current directory name */
			sprintf(browser.dir, "%s/%s",browser.dir, browserList[browser.selIndex].filename);
			return 1;
		}
		else
		{
			return -1;
		}
	}
}

/****************************************************************************
 * FileSortCallback
 *
 * Quick sort callback to sort file entries with the following order:
 *   .
 *   ..
 *   <dirs>
 *   <files>
 ***************************************************************************/
int FileSortCallback(const void *f1, const void *f2)
{
	/* Special case for implicit directories */
	if(((BROWSERENTRY *)f1)->filename[0] == '.' || ((BROWSERENTRY *)f2)->filename[0] == '.')
	{
		if(strcmp(((BROWSERENTRY *)f1)->filename, ".") == 0) { return -1; }
		if(strcmp(((BROWSERENTRY *)f2)->filename, ".") == 0) { return 1; }
		if(strcmp(((BROWSERENTRY *)f1)->filename, "..") == 0) { return -1; }
		if(strcmp(((BROWSERENTRY *)f2)->filename, "..") == 0) { return 1; }
	}

	/* If one is a file and one is a directory the directory is first. */
	if(((BROWSERENTRY *)f1)->isdir && !(((BROWSERENTRY *)f2)->isdir)) return -1;
	if(!(((BROWSERENTRY *)f1)->isdir) && ((BROWSERENTRY *)f2)->isdir) return 1;

	return stricmp(((BROWSERENTRY *)f1)->filename, ((BROWSERENTRY *)f2)->filename);
}

/***************************************************************************
 * Browse subdirectories
 **************************************************************************/
int
ParseDirectory()
{
	DIR_ITER *dir = NULL;
	char fulldir[MAXPATHLEN];
	char filename[MAXPATHLEN];
	struct stat filestat;

	// reset browser
	ResetBrowser();

	// open the directory
	sprintf(fulldir, "%s%s", browser.rootdir, browser.dir); // add currentDevice to path
	dir = diropen(fulldir);

	// if we can't open the dir, try opening the root dir
	if (dir == NULL)
	{
		sprintf(browser.dir,"/");
		dir = diropen(browser.rootdir);
		if (dir == NULL)
		{
			return -1;
		}
	}

	// index files/folders
	int entryNum = 0;

	while(dirnext(dir,filename,&filestat) == 0)
	{
		if(strcmp(filename,".") != 0)
		{
			BROWSERENTRY * newBrowserList = (BROWSERENTRY *)realloc(browserList, (entryNum+1) * sizeof(BROWSERENTRY));

			if(!newBrowserList) // failed to allocate required memory
			{
				ResetBrowser();
				entryNum = -1;
				break;
			}
			else
			{
				browserList = newBrowserList;
			}
			memset(&(browserList[entryNum]), 0, sizeof(BROWSERENTRY)); // clear the new entry

			strncpy(browserList[entryNum].filename, filename, MAXJOLIET);

			if(strcmp(filename,"..") == 0)
			{
				sprintf(browserList[entryNum].displayname, "..");
			}
			else
			{
				strcpy(browserList[entryNum].displayname, filename);	// crop name for display
			}

			browserList[entryNum].length = filestat.st_size;
			browserList[entryNum].isdir = (filestat.st_mode & _IFDIR) == 0 ? 0 : 1; // flag this as a dir

			entryNum++;
		}
	}

	// close directory
	dirclose(dir);

	// Sort the file list
	qsort(browserList, entryNum, sizeof(BROWSERENTRY), FileSortCallback);

	browser.numEntries = entryNum;
	return entryNum;
}

/****************************************************************************
 * BrowserChangeFolder
 *
 * Update current directory and set new entry list if directory has changed
 ***************************************************************************/
int BrowserChangeFolder()
{
	if(!UpdateDirName())
		return -1;

	ParseDirectory();

	return browser.numEntries;
}

/****************************************************************************
 * BrowseDevice
 * Displays a list of files on the selected device
 ***************************************************************************/
int BrowseDevice(int device)
{
	sprintf(browser.dir, "/");
	switch(device)
	{
	    case SD:
            sprintf(browser.rootdir, "SD:");
            break;
	    case USB:
            sprintf(browser.rootdir, "USB:");
            break;
	}
	ParseDirectory(); // Parse root directory
	return browser.numEntries;
}


/****************************************************************************
 * MenuBrowseDevice
 ***************************************************************************/ 
 
int BrowseDevice(char * var, int force)
{	

	int result=-1;
	int i;
	char currentdir[90];
	int curDivice = -1;
	int forced =force;
	
	if(forced>-1){
		if(BrowseDevice(forced) > 0)
		{
			curDivice = forced;
			goto main;
		}
	}

	else if((!strcasecmp(bootDevice, "USB:"))&&(BrowseDevice(USB) > 0))
		{	
			curDivice = USB;
			goto main;
		}
	else 	if((!strcasecmp(bootDevice, "SD:"))&&(BrowseDevice(SD) > 0))
		{
			curDivice = SD;
			goto main;
		} 
	else {
		WindowPrompt(tr("Error"),0,tr("Ok"));
		return -1;
		}

main:
	int menu = MENU_NONE;
	
/*
	GuiText titleTxt("Browse Files", 28, (GXColor){0, 0, 0, 230});
	titleTxt.SetAlignment(ALIGN_LEFT, ALIGN_TOP);
	titleTxt.SetPosition(70,20);
*/
	GuiTrigger trigA;
	trigA.SetSimpleTrigger(-1, WPAD_BUTTON_A | WPAD_CLASSIC_BUTTON_A, PAD_BUTTON_A);
	GuiTrigger trigB;
	trigB.SetButtonOnlyTrigger(-1, WPAD_BUTTON_B | WPAD_CLASSIC_BUTTON_B, PAD_BUTTON_B);
   
	GuiSound btnSoundOver(button_over_pcm, button_over_pcm_size, SOUND_PCM, Settings.sfxvolume);
	GuiSound btnClick(button_click2_pcm, button_click2_pcm_size, SOUND_PCM, Settings.sfxvolume);

   GuiImageData btnOutline(button_dialogue_box_png);
	GuiText ExitBtnTxt("Cancel", 24, (GXColor){0, 0, 0, 255});
	GuiImage ExitBtnImg(&btnOutline);
	if (Settings.wsprompt == yes){
	ExitBtnTxt.SetWidescreen(CFG.widescreen);
	ExitBtnImg.SetWidescreen(CFG.widescreen);
	}GuiButton ExitBtn(btnOutline.GetWidth(), btnOutline.GetHeight());
	ExitBtn.SetAlignment(ALIGN_RIGHT, ALIGN_BOTTOM);
	ExitBtn.SetPosition(-55, -35);
	ExitBtn.SetLabel(&ExitBtnTxt);
	ExitBtn.SetImage(&ExitBtnImg);
	ExitBtn.SetTrigger(&trigA);
	ExitBtn.SetTrigger(&trigB);
	ExitBtn.SetEffectGrow();

	GuiText okBtnTxt(tr("Ok"), 22, (GXColor){THEME.prompttxt_r, THEME.prompttxt_g, THEME.prompttxt_b, 255});
	GuiImage okBtnImg(&btnOutline);
	if (Settings.wsprompt == yes){
	okBtnTxt.SetWidescreen(CFG.widescreen);
	okBtnImg.SetWidescreen(CFG.widescreen);
	}
	GuiButton okBtn(&okBtnImg,&okBtnImg, 0, 4, 45, -35, &trigA, &btnSoundOver, &btnClick,1);
	okBtn.SetLabel(&okBtnTxt);
	
	GuiFileBrowser fileBrowser(396, 248);
	fileBrowser.SetAlignment(ALIGN_CENTRE, ALIGN_TOP);
	fileBrowser.SetPosition(0, 120);
	
	GuiImageData Address(addressbar_textbox_png);
   snprintf(currentdir, sizeof(currentdir), "%s%s", browser.rootdir, browser.dir);
	GuiText AdressText(currentdir, 20, (GXColor) {0, 0, 0, 255});
	AdressText.SetAlignment(ALIGN_LEFT, ALIGN_MIDDLE);
	AdressText.SetPosition(20, 0);
	AdressText.SetMaxWidth(Address.GetWidth()-40, GuiText::SCROLL);
	GuiImage AdressbarImg(&Address);
	GuiButton Adressbar(Address.GetWidth(), Address.GetHeight());
	Adressbar.SetAlignment(ALIGN_CENTRE, ALIGN_TOP);
	Adressbar.SetPosition(0, fileBrowser.GetTop()-45);
	Adressbar.SetImage(&AdressbarImg);
	Adressbar.SetLabel(&AdressText);
	
	//save var in case they cancel and return it to them
	snprintf(currentdir, sizeof(currentdir), "%s", var);
	sprintf(var,"%s", browser.rootdir);
		
	HaltGui();
	GuiWindow w(screenwidth, screenheight);
	w.Append(&ExitBtn);
//	w.Append(&titleTxt);
	w.Append(&fileBrowser);
	w.Append(&Adressbar);
	w.Append(&okBtn);
//	w.Append(&deviceBtn);//i got codedump when i tried to make an extra button so i took this one out for now till i find the dump
	mainWindow->Append(&w);
	ResumeGui();

	while(menu == MENU_NONE)
	{
		VIDEO_WaitVSync();

        if(shutdown == 1)
            Sys_Shutdown();

        if(reset == 1)
            Sys_Reboot();

		for(i=0; i<PAGESIZE; i++)
		{
			if(fileBrowser.fileList[i]->GetState() == STATE_CLICKED)
			{
				fileBrowser.fileList[i]->ResetState();
				// check corresponding browser entry
				if(browserList[browser.selIndex].isdir)
				{
					if(BrowserChangeFolder())
					{
						fileBrowser.ResetState();
						fileBrowser.fileList[0]->SetState(STATE_SELECTED);
						fileBrowser.TriggerUpdate();
                        sprintf(var,"%s", browser.rootdir);
								int len=strlen(browser.rootdir);
								for (unsigned int i=len;i<strlen(browser.rootdir)+strlen(browser.dir);i++)
								{
									var[i]=browser.dir[i-(len-1)];
								}
								AdressText.SetTextf("%s", var);
					} else {
						menu = MENU_DISCLIST;
						break;
					}
				} else {
					mainWindow->SetState(STATE_DISABLED);
					mainWindow->SetState(STATE_DEFAULT);
				}
			}
		}

        if(ExitBtn.GetState() == STATE_CLICKED)
			{
				snprintf(var,sizeof(currentdir),"%s", currentdir);
				break;
			}
		if(okBtn.GetState() == STATE_CLICKED)
		{
			/*int e=0;
			for(unsigned int d=0;d<strlen(var);d++)
			{
				if (d!=3)
					{
					currentdir[e]=var[d];
					e++;
					}
			}*/
			//snprintf(var,sizeof(currentdir),"%s", currentdir);
			//snprintf(var,sizeof(var),"%s%s", browser.rootdir, browser.dir);
			result = 1;
			break;
		}
		
	}
	HaltGui();
	mainWindow->Remove(&w);
	ResumeGui();

	//}

	return result;
}