我正在尝试从二进制文件中读取字符,并将其与另一个二进制文件中的字符进行比较,但是我想从中间开始而不是从头开始读取其中一个文件。尝试时,我无法从中间读取要读取的文件,因为它会立即返回EOF。我试图从不同的角度阅读它,甚至将流移动到一个地方,但它仍然立即返回EOF。
int scanWithOffset(FILE* fc, FILE* fv, int start, int end)
{
int charRead1 = 0, charRead2 = 0, matchCounter = 0, match = 0;
int fileSize = findFileSize(fv);
int counter = 0;
if (!fseek(fc, start, SEEK_SET))
{
while (((charRead2 = fgetc(fv)) != EOF) && ((charRead1 = fgetc(fc)) != EOF)
&& !match && counter < (end - start))
{
counter++;
if (charRead1 == charRead2)
{
matchCounter++;
if (matchCounter == fileSize)
{
match = 1;
fclose(fc);
}
}
else
{
// if something doesn't match up, reset the counter and bring
// the stream back to the beginning
matchCounter = 0;
fseek(fv, 0, SEEK_SET);
}
}
if (!match)
{
fclose(fc);
}
}
return match;
}
if (matchCounter == fileSize)
{
match = 1;
fclose(fc);
}
关闭while
后,您不会中断fc
循环。到达while
时必须退出matchCounter == fileSize
循环。您可以在break;
]之后添加fclose(fc)