mirror of
https://gitee.com/anod/open_agb_firm.git
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338 lines
9.3 KiB
C
338 lines
9.3 KiB
C
/*
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* This file is part of open_agb_firm
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* Copyright (C) 2021 derrek, profi200
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "types.h"
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#include "error_codes.h"
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#include "fs.h"
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#include "util.h"
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#include "arm11/drivers/hid.h"
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#include "arm11/console.h"
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#include "arm11/fmt.h"
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#include "drivers/gfx.h"
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#include "arm11/acf.h"
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#include "arm11/atp.h"
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#define screenClean() memset(consoleGet()->frameBuffer, 0, CWIDTH*CHEIGHT*sizeof(uint16_t))
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// Notes on these settings:
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// MAX_ENT_BUF_SIZE should be big enough to hold the average file/dir name length * MAX_DIR_ENTRIES.
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#define MAX_ENT_BUF_SIZE (1024u * 196) // 196 KiB.
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#define MAX_DIR_ENTRIES (999u)
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#define DIR_READ_BLOCKS (10u)
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#define CWIDTH 320u
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#define CHEIGHT 240u
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#define ENT_TYPE_FILE (0)
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#define ENT_TYPE_DIR (1)
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typedef struct
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{
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u32 num; // Total number of entries.
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char entBuf[MAX_ENT_BUF_SIZE]; // Format: char entryType; char name[X]; // null terminated.
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char *ptrs[MAX_DIR_ENTRIES]; // For fast sorting.
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} DirList;
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int dlistCompare(const void *a, const void *b)
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{
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const char *entA = *(char**)a;
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const char *entB = *(char**)b;
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// Compare the entry type. Dirs have priority over files.
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if(*entA != *entB) return (int)*entB - *entA;
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// Compare the string.
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int res;
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do
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{
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res = *++entA - *++entB;
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} while(res == 0 && *entA != '\0' && *entB != '\0');
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return res;
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}
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static Result scanDir(const char *const path, DirList *const dList, const char *const filter, const char *match, int *index)
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{
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FILINFO *const fis = (FILINFO*)malloc(sizeof(FILINFO) * DIR_READ_BLOCKS);
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if(fis == NULL) return RES_OUT_OF_MEM;
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dList->num = 0;
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Result res;
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DHandle dh;
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u32 received = 0;
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if((res = fOpenDir(&dh, path)) == RES_OK)
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{
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u32 read; // Number of entries read by fReadDir().
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u32 numEntries = 0; // Total number of processed entries.
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u32 entBufPos = 0; // Entry buffer position/number of bytes used.
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const u32 filterLen = strlen(filter);
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do
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{
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if((res = fReadDir(dh, fis, DIR_READ_BLOCKS, &read)) != RES_OK) break;
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received = numEntries + read;
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read = (read <= MAX_DIR_ENTRIES - numEntries ? read : MAX_DIR_ENTRIES - numEntries);
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for(u32 i = 0; i < read; i++)
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{
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const char entType = (fis[i].fattrib & AM_DIR ? ENT_TYPE_DIR : ENT_TYPE_FILE);
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const u32 nameLen = strlen(fis[i].fname);
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if(entType == ENT_TYPE_FILE)
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{
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if(nameLen <= filterLen || strcmp(filter, fis[i].fname + nameLen - filterLen) != 0)
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continue;
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}
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// nameLen does not include the entry type and NULL termination.
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if(entBufPos + nameLen + 2 > MAX_ENT_BUF_SIZE)
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{
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res = RES_PATH_TOO_LONG;
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goto scanEnd;
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}
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char *const entry = &dList->entBuf[entBufPos];
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*entry = entType;
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safeStrcpy(&entry[1], fis[i].fname, 256);
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dList->ptrs[numEntries++] = entry;
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entBufPos += nameLen + 2;
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}
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} while(read == DIR_READ_BLOCKS);
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scanEnd:
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dList->num = numEntries;
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fCloseDir(dh);
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}
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free(fis);
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qsort(dList->ptrs, dList->num, sizeof(char*), dlistCompare);
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if( match != NULL )
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{
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for( u32 i=0; i < dList->num; ++i )
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{
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if( strcmp(match, &dList->ptrs[i][1]) == 0 )
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{
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*index = i;
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break;
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}
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}
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}
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return received > MAX_DIR_ENTRIES ? RES_OUT_OF_RANGE : res;
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}
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static atp_text_t folder_help[] = {
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"操 作 说 明",
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"~ ~ ~ ~ ~ ~ ~",
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"蓝色 目录",
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"白色 游戏",
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"~ ~ ~ ~ ~ ~ ~",
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"上下方向键 切换选中文件或目录",
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"左右方向键 翻页",
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"Ａ键 查看目录或启动游戏",
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"Ｂ键 上层文件夹",
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"Ｘ键 金手指",
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"Ｙ键 暂不使用",
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"ＳＴＡＲＴ 查看说明",
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"ＳＥＬＥＣＴ 系统设置"
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};
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static atp_error_t display_folder( atp_callerdata_t data, atp_counter_t index, atp_itemcfg_t *config )
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{
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DirList *const dList = (DirList*)data;
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u8 type = *dList->ptrs[index];
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if( type == ENT_TYPE_DIR )
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config->text_color = ATP_COLOR_BLUE;
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config->text = &dList->ptrs[index][1];
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config->value = index;
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return ATP_SUCCESS;
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}
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#define DECLARE_ERROR_PAGE(name, message) static atp_error_t name (atp_callerdata_t, atp_counter_t, atp_linecfg_t *c) \
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{ \
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c->text = message; \
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c->text_align = ATP_PLACEMENT_CENTER; \
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c->text_color = ATP_COLOR_RED; \
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return ATP_SUCCESS; \
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}
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DECLARE_ERROR_PAGE( display_empty, "没有合适的文件" )
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DECLARE_ERROR_PAGE( display_toolong, "路径过长，改名或移动文件后再试" )
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DECLARE_ERROR_PAGE( display_pathfull, "游戏或目录过量，最多显示999个" )
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DECLARE_ERROR_PAGE( display_longname, "文件名总计过长，只显示前面的文件" )
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static atp_error_t display_help( atp_callerdata_t table, atp_counter_t index, atp_linecfg_t *config )
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{
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atp_text_t *list = (atp_text_t*)table;
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config->text_align = ATP_PLACEMENT_CENTER;
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config->text_color = index == 0 ? ATP_COLOR_MAGENTA : ATP_COLOR_LIGHT;
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config->text = list[index];
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return ATP_SUCCESS;
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}
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atp_error_t help_page( atp_text_t *wording, atp_counter_t length )
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{
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atp_tips( NULL, "返回：按A/B" );
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return atp_show( length, display_help, (atp_callerdata_t)wording );
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}
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extern atp_error_t oaf_config_page();
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static atp_pageopt_t serve_on_key( atp_callerdata_t data, atp_counter_t, atp_boolean_t x, atp_boolean_t y, atp_boolean_t l, atp_boolean_t r, atp_boolean_t start, atp_boolean_t select )
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{
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if( start )
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{
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atp_tips( "", NULL );
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return ATP_POWER_OFF == help_page( folder_help, sizeof(folder_help)/sizeof(atp_text_t) )
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? ATP_POWER_OFF : ATP_PAGE_REFRESH;
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}
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else if( select )
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{
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return ATP_POWER_OFF == oaf_config_page() ? ATP_POWER_OFF : ATP_PAGE_REFRESH;
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}
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return ATP_PAGE_NOOPTION;
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}
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#define DIRBUFFSIZE 512
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#define PATH_SAME 0
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#define PATH_PUSH 1
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#define PATH_POP 2
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#define DIRUP { \
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char *tmpPathPtr = curDir + pathLen; \
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while(*--tmpPathPtr != '/'); \
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if(*(tmpPathPtr - 1) == ':') tmpPathPtr++; \
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*tmpPathPtr = '\0'; \
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path_recover = PATH_POP; \
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upFrom = tmpPathPtr + 1; \
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}
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Result browseFiles(const char *const basePath, char selected[512])
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{
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if(basePath == NULL || selected == NULL) return RES_INVALID_ARG;
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// TODO: Check if the base path is empty.
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char *curDir = (char*)malloc(DIRBUFFSIZE);
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if(curDir == NULL) return RES_OUT_OF_MEM;
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safeStrcpy(curDir, basePath, 512);
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DirList *const dList = (DirList*)malloc(sizeof(DirList));
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if(dList == NULL) return RES_OUT_OF_MEM;
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Result res;
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if((res = scanDir(curDir, dList, ".gba", NULL, NULL)) != RES_OK)
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{
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if( res == RES_OUT_OF_RANGE )
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atp_show(1, display_pathfull, NULL);
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else if( res == RES_PATH_TOO_LONG )
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atp_show(1, display_longname, NULL );
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else goto end;
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}
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const char *upFrom = NULL;
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int selecting = 0;
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while( 1 )
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{
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atp_itemval_t value;
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atp_error_t error;
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int path_recover = PATH_SAME;
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const u32 count = dList->num;
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u32 pathLen = strlen(curDir);
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if( count > 0 )
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{
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GFX_waitForVBlank0();
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hidScanInput();
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atp_tips( NULL, "指引：按START" );
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error = atp_select( curDir, count, display_folder, serve_on_key, (atp_callerdata_t)dList, selecting, 0, &value );
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}
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else error = atp_show( 1, display_empty, NULL );
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if( error == ATP_POWER_OFF )
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{
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res = error;
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break;
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}
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else if( error == ATP_SUCCESS )
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{// 进入目录或文件
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if( count == 0 )
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{
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DIRUP;
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}
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else
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{
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const char *fname = &dList->ptrs[value][1];
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u32 namelen = strlen( fname ) + 1;
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if( namelen + pathLen > DIRBUFFSIZE-1 )
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{
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atp_show( 1, display_toolong, NULL );
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continue;
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}
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curDir[pathLen++] = '/';
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safeStrcpy( curDir+pathLen, fname, DIRBUFFSIZE - namelen );
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if( *dList->ptrs[value] == ENT_TYPE_FILE )
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{
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safeStrcpy( selected, curDir, 512 );
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break;
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}
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else
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{
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path_recover = PATH_PUSH;
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selecting = 0;
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upFrom = NULL;
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}
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}
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}
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else if( error == ATP_NO_ACTION )
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{// 上层目录
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if( strcmp(curDir, FS_DRIVE_NAMES) == 0 )
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{
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atp_tips("没有上层目录", NULL);
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help_page( folder_help, sizeof(folder_help)/sizeof(atp_text_t) );
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atp_tips("", NULL);
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}
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else DIRUP;
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}
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if( path_recover )
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{
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if(RES_OK != (res = scanDir(curDir, dList, ".gba", upFrom, &selecting)) )
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{
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if( res == RES_OUT_OF_RANGE )
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atp_show( 1, display_pathfull, NULL ); // give a warning for user, and keep show the list
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else if( res == RES_PATH_TOO_LONG )
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atp_show( 1, display_longname, NULL );
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else break;
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}
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path_recover = PATH_SAME;
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}
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}
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end:
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free(dList);
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free(curDir);
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// Clear screen.
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screenClean();
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return res;
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}
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