fbi-i18n-zh/source/core/error.c

#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <3ds.h>

#include "error.h"

extern void cleanup();

static int util_get_line_length(PrintConsole* console, const char* str) {
    int lineLength = 0;
    while(*str != 0) {
        if(*str == '\n') {
            break;
        }

        lineLength++;
        if(lineLength >= console->consoleWidth - 1) {
            break;
        }

        str++;
    }

    return lineLength;
}

static int util_get_lines(PrintConsole* console, const char* str) {
    int lines = 1;
    int lineLength = 0;
    while(*str != 0) {
        if(*str == '\n') {
            lines++;
            lineLength = 0;
        } else {
            lineLength++;
            if(lineLength >= console->consoleWidth - 1) {
                lines++;
                lineLength = 0;
            }
        }

        str++;
    }

    return lines;
}

void error_panic(const char* s, ...) {
    va_list list;
    va_start(list, s);

    char buf[1024];
    vsnprintf(buf, 1024, s, list);

    va_end(list);

    gspWaitForVBlank();

    u16 width;
    u16 height;
    for(int i = 0; i < 2; i++) {
        memset(gfxGetFramebuffer(GFX_TOP, GFX_LEFT, &width, &height), 0, (size_t) (width * height * 3));
        memset(gfxGetFramebuffer(GFX_TOP, GFX_RIGHT, &width, &height), 0, (size_t) (width * height * 3));
        memset(gfxGetFramebuffer(GFX_BOTTOM, GFX_LEFT, &width, &height), 0, (size_t) (width * height * 3));

        gfxSwapBuffers();
    }

    PrintConsole* console = consoleInit(GFX_TOP, NULL);

    const char* header = "FBI has encountered a fatal error!";
    const char* footer = "Press any button to exit.";

    printf("\x1b[0;0H");
    for(int i = 0; i < console->consoleWidth; i++) {
        printf("-");
    }

    printf("\x1b[%d;0H", console->consoleHeight - 1);
    for(int i = 0; i < console->consoleWidth; i++) {
        printf("-");
    }

    printf("\x1b[0;%dH%s", (console->consoleWidth - util_get_line_length(console, header)) / 2, header);
    printf("\x1b[%d;%dH%s", console->consoleHeight - 1, (console->consoleWidth - util_get_line_length(console, footer)) / 2, footer);

    int bufRow = (console->consoleHeight - util_get_lines(console, buf)) / 2;
    char* str = buf;
    while(*str != 0) {
        if(*str == '\n') {
            bufRow++;
            str++;
            continue;
        } else {
            int lineLength = util_get_line_length(console, str);

            char old = *(str + lineLength);
            *(str + lineLength) = '\0';
            printf("\x1b[%d;%dH%s", bufRow, (console->consoleWidth - lineLength) / 2, str);
            *(str + lineLength) = old;

            bufRow++;
            str += lineLength;
        }
    }

    gfxFlushBuffers();
    gspWaitForVBlank();

    while(aptMainLoop()) {
        hidScanInput();
        if(hidKeysDown() & ~KEY_TOUCH) {
            break;
        }

        gspWaitForVBlank();
    }

    cleanup();
    exit(1);
}