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load or save a chunk of memory to/from file

/ Published in: C
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loadfile(filename);
returns NULL on fail or a pointer that should be free()d when no longer needed.

savefile(filename,data,dataSize);
returns 0 on fail or 1 on success.

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  1. void*loadfile(const char*const s){
  2.  FILE*f=fopen(s,"rb");
  3.  if(f){
  4.   fseek(f,0,SEEK_END);
  5.   {
  6.    const int ml=ftell(f);
  7.    if(ml){
  8.     char*m=malloc(ml);
  9.     if(m){
  10.      rewind(f);
  11.      fread(m,1,ml,f);
  12.      fclose(f);
  13.      return m;
  14.     }
  15.    }
  16.   }
  17.  }
  18.  return 0;
  19. }
  20.  
  21.  
  22. int savefile(const char*const s,const void*const m,const int ml){
  23.  FILE*f=fopen(s,"wb");
  24.  if(f){
  25.   int ok=fwrite(m,1,ml,f)==ml;
  26.   fclose(f);
  27.   return ok;
  28.  }
  29.  return 0;
  30. }

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