mirror of
https://github.com/joel16/VitaShell.git
synced 2024-12-02 16:56:16 +00:00
382 lines
8.7 KiB
C
382 lines
8.7 KiB
C
/*
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VitaShell
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Copyright (C) 2015-2016, TheFloW
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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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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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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 "main.h"
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#include "io_wrapper.h"
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#include "archive.h"
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#include "file.h"
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#include "text.h"
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#include "hex.h"
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#include "message_dialog.h"
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#include "language.h"
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#include "utils.h"
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void hexListAddEntry(HexList *list, HexListEntry *entry) {
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entry->next = NULL;
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if (list->head == NULL) {
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list->head = entry;
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list->tail = entry;
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} else {
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HexListEntry *tail = list->tail;
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tail->next = entry;
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list->tail = entry;
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}
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list->length++;
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}
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void hexListEmpty(HexList *list) {
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HexListEntry *entry = list->head;
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while (entry) {
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HexListEntry *next = entry->next;
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free(entry);
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entry = next;
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}
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memset(list, 0, sizeof(HexList));
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}
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HexListEntry *hexListGetNthEntry(HexList *list, int n) {
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HexListEntry *entry = list->head;
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while (n > 0 && entry) {
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n--;
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entry = entry->next;
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}
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if (n != 0)
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return NULL;
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return entry;
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}
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int hexViewer(char *file) {
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int text_viewer = 0;
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uint8_t *buffer = malloc(BIG_BUFFER_SIZE);
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if (!buffer)
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return -1;
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int size = 0;
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if (isInArchive()) {
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size = ReadArchiveFile(file, buffer, BIG_BUFFER_SIZE);
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} else {
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size = ReadFile(file, buffer, BIG_BUFFER_SIZE);
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}
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if (size <= 0) {
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free(buffer);
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return size;
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}
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int modify_allowed = 1;
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if (isInArchive()) {
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modify_allowed = 0;
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}
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int changed = 0;
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int save_question = 0;
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int base_pos = 0, rel_pos = 0;
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uint8_t nibble_pos = 0;
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HexList list;
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memset(&list, 0, sizeof(HexList));
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int i;
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for (i = 0; i < 0x10; i++) {
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HexListEntry *entry = malloc(sizeof(HexListEntry));
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memcpy(entry->data, buffer + i * 0x10, 0x10);
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hexListAddEntry(&list, entry);
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}
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while (1) {
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readPad();
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if (!save_question) {
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if (hold_buttons & SCE_CTRL_UP || hold2_buttons & SCE_CTRL_LEFT_ANALOG_UP) {
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if (rel_pos > 0) {
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rel_pos -= 0x10;
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} else {
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if (base_pos > 0) {
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base_pos -= 0x10;
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// Tail to head
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list.tail->next = list.head;
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list.head = list.tail;
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// Second last to tail
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HexListEntry *second_last = list.tail->next;
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while (second_last) {
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if (second_last->next == list.tail)
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break;
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second_last = second_last->next;
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}
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list.tail = second_last;
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list.tail->next = NULL;
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// Read
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memcpy(list.head->data, buffer + base_pos, 0x10);
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}
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}
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} else if (hold_buttons & SCE_CTRL_DOWN || hold2_buttons & SCE_CTRL_LEFT_ANALOG_DOWN) {
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if ((rel_pos + 0x10) < size) {
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if ((rel_pos + 0x10) < ((MAX_POSITION - 1) * 0x10)) {
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rel_pos += 0x10;
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} else {
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if ((base_pos + rel_pos + 0x10) < size) {
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base_pos += 0x10;
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// Head to tail
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list.tail->next = list.head;
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list.tail = list.head;
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// Second first to head
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list.head = list.head->next;
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list.tail->next = NULL;
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// Read
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memcpy(list.tail->data, buffer + base_pos + (0x10 - 1) * 0x10, 0x10);
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}
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}
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}
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}
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/*
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TODO: page skip
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if (hold_buttons & SCE_CTRL_LTRIGGER) {
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if ((base_pos + rel_pos) != 0) {
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if ((base_pos - 0x10 * 0x10) >= 0) {
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base_pos -= 0x10 * 0x10;
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} else {
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base_pos = 0;
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rel_pos = 0;
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}
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HexListEntry *entry = list.head;
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int i;
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for (i = 0; i < 0x10; i++) {
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memcpy(entry->data, buffer + base_pos + i * 0x10, 0x10);
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// Next
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entry = entry->next;
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}
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}
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}
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if (hold_buttons & SCE_CTRL_RTRIGGER) {
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if ((base_pos + rel_pos) != (size - (size % 0x10) - 0x10)) {
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int length = 0x10;
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if ((base_pos + rel_pos + 0x10 * 0x10) < size) {
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base_pos += 0x10 * 0x10;
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} else {
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if (size >= 0x10 * 0x10) {
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base_pos = ALIGN(size, 0x10) - 0xF0;
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rel_pos = ((MAX_POSITION - 2) * 0x10);
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length = MAX_POSITION - 1;
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}
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}
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HexListEntry *entry = list.head;
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int i;
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for (i = 0; i < length; i++) {
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memcpy(entry->data, buffer + base_pos + i * 0x10, 0x10);
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// Next
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entry = entry->next;
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}
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}
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}
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*/
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uint8_t max_nibble = (2 * 0x10) - 1;
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// Last line
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if ((base_pos + rel_pos + 0x10) >= size) {
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uint8_t rest = size % 0x10;
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if (rest == 0)
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rest = 0x10;
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max_nibble = 2 * rest - 1;
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}
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if (nibble_pos > max_nibble) {
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nibble_pos = max_nibble;
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}
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if (hold_buttons & SCE_CTRL_LEFT || hold2_buttons & SCE_CTRL_LEFT_ANALOG_LEFT) {
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if (nibble_pos > 0)
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nibble_pos--;
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} else if (hold_buttons & SCE_CTRL_RIGHT || hold2_buttons & SCE_CTRL_LEFT_ANALOG_RIGHT) {
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if (nibble_pos < max_nibble)
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nibble_pos++;
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}
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// Cancel or switch to text viewer
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if (pressed_buttons & SCE_CTRL_CANCEL || pressed_buttons & SCE_CTRL_SQUARE) {
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if (pressed_buttons & SCE_CTRL_CANCEL) {
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text_viewer = 0;
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} else {
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text_viewer = 1;
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}
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if (changed) {
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initMessageDialog(SCE_MSG_DIALOG_BUTTON_TYPE_YESNO, "Are you sure you want to save your modifications?");
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save_question = 1;
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} else {
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break;
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}
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}
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// Increase nibble
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if (modify_allowed && hold_buttons & SCE_CTRL_ENTER) {
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changed = 1;
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int cur_pos = rel_pos + base_pos + nibble_pos / 2;
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uint8_t ch = buffer[cur_pos];
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uint8_t high_nibble = (ch >> 4) & 0xF;
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uint8_t low_nibble = ch & 0xF;
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int low = (nibble_pos % 2);
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uint8_t nibble = low ? (ch & 0xF) : ((ch >> 4) & 0xF);
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if (nibble < 0xF) {
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nibble++;
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} else {
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nibble = 0;
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}
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HexListEntry *entry = hexListGetNthEntry(&list, rel_pos / 0x10);
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if (low) {
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uint8_t byte = (high_nibble << 4) | nibble;
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buffer[cur_pos] = byte;
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entry->data[nibble_pos / 2] = byte;
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} else {
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uint8_t byte = (nibble << 4) | low_nibble;
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buffer[cur_pos] = byte;
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entry->data[nibble_pos / 2] = byte;
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}
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}
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} else {
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int msg_result = updateMessageDialog();
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if (msg_result == MESSAGE_DIALOG_RESULT_YES) {
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SceUID fd = fileIoOpen(file, SCE_O_WRONLY, 0777);
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if (fd >= 0) {
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fileIoWrite(fd, buffer, size);
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fileIoClose(fd);
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}
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break;
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} else if (msg_result == MESSAGE_DIALOG_RESULT_NO) {
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break;
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}
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}
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// Start drawing
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START_DRAWING();
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// Draw shell info
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drawShellInfo(file);
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// Draw scroll bar
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int pos = (base_pos - (base_pos % 0x10)) / 0x10 + ((base_pos % 0x10) ? 1 : 0);
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int n_lines = (size - (size % 0x10)) / 0x10 + ((size % 0x10) ? 1 : 0);
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drawScrollBar(pos, n_lines);
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// Offset/size
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pgf_draw_textf(HEX_CHAR_X, START_Y, CYAN, FONT_SIZE, "%08X/%08X", rel_pos + base_pos, size);
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// Offset x
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pgf_draw_text(SHELL_MARGIN_X, START_Y, CYAN, FONT_SIZE, language_container[OFFSET]);
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int x;
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for (x = 0; x < 0x10; x++) {
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pgf_draw_textf(HEX_OFFSET_X + (x * HEX_OFFSET_SPACE), START_Y, CYAN, FONT_SIZE, "%02X", x);
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}
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HexListEntry *entry = list.head;
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int y;
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for (y = 0; y < 0x10; y++) {
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int x;
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for (x = 0; x < 0x10; x++) {
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uint8_t nibble_x = x * 2;
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uint8_t ch = entry->data[x];
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uint32_t offset = base_pos + x + y * 0x10;
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if (offset >= size)
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break;
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uint32_t color = WHITE;
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int on_line = 0;
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if (rel_pos == (y * 0x10)) {
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color = GREEN;
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on_line = 1;
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}
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// Character hex
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uint8_t high_nibble = (ch >> 4) & 0xF;
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uint8_t low_nibble = ch & 0xF;
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int w = pgf_draw_textf(HEX_OFFSET_X + (x * HEX_OFFSET_SPACE), START_Y + ((y + 1) * FONT_Y_SPACE), (on_line && nibble_x == nibble_pos) ? RED : color, FONT_SIZE, "%01X", high_nibble);
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pgf_draw_textf(HEX_OFFSET_X + (x * HEX_OFFSET_SPACE) + w, START_Y + ((y + 1) * FONT_Y_SPACE), (on_line && (nibble_x + 1) == nibble_pos) ? RED : color, FONT_SIZE, "%01X", low_nibble);
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// Character
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ch = (ch >= 0x20) ? ch : '.';
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int width = font_size_cache[(int)ch];
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uint8_t byte_nibble_pos = nibble_pos - (nibble_pos % 2);
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pgf_draw_textf(HEX_CHAR_X + (x * FONT_X_SPACE) + (FONT_X_SPACE - width) / 2.0f, START_Y + ((y + 1) * FONT_Y_SPACE), (on_line && nibble_x == byte_nibble_pos) ? RED : color, FONT_SIZE, "%c", ch);
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}
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// Offset y
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if (x > 0)
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pgf_draw_textf(SHELL_MARGIN_X, START_Y + ((y + 1) * FONT_Y_SPACE), CYAN, FONT_SIZE, "%08X", base_pos + (y * 0x10));
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// It's the end, break
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if (x < 0x10)
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break;
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// Next
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entry = entry->next;
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}
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// End drawing
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END_DRAWING();
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}
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hexListEmpty(&list);
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free(buffer);
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if (text_viewer)
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textViewer(file);
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return 0;
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}
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