file.c

来自「压缩包里面的都是精致的基本C语言小程序」· C语言 代码 · 共 63 行

#include "error.h"
#include "mystdlib.h"
#include "file.h"

file fileOpen (char *fname, char *mode)
{
  file fp = fopen (fname, mode);
  
  if (!fp)
    exception ("bad file pointer: file.c\n");

  return fp;
}

int fileClose (file fp)
{
  return fclose (fp);
}

int fileGetChar (file fp)
{
  return getc (fp);
}

int filePutChar (int c, file fp)
{
  putc (c, fp);
  return c;
}

str fileGets (file fp)
{
  int maxSize = 1024;

  char *temp = checkedMalloc (maxSize * sizeof (char));
  
  if (NULL == fgets (temp, maxSize, fp))
  {
    //error ("no content in file: file.c\n");
    checkedFree (temp);
    return NULL;
  }

  if (!(strValid (temp, maxSize)))
    exception ("space too small: file.c\n");

  str sss = newStr (temp);
  checkedFree (temp);
  return sss;
}

int filePuts (str line, file fp)
{
  char *s = strToCharStar (line);
  
  int i = fputs (s, fp);  
  
  if (EOF == i)
    error ("file write error: file.c\n");

  return 0;
}