int open (const char *file)
{
struct file *f = filesys_open (file);
if (!f) {
return -1;
}
return process_add_file(f);
}
/* Open file */
int
open(const char* file)
{
int fd;
struct file* f = filesys_open(file);
if( f == NULL )
return (int)-1;
fd = process_add_file(f);
return (int)fd;
}
openfile_t io_open(const char* pathname)
{
openfile_t file = vfs_open(pathname);
if (file < 0) {
return file;
}
else {
process_add_file(file);
/* Don't return a value that can be mistaken for stdin, stdout, or
stderr. */
return file + 3;
}
}
/* open file and return fd */
int
open(const char *file)
{
int fd;
struct file *new_file;
new_file=filesys_open(file);
if(new_file != NULL)
{
fd = process_add_file(new_file);
return fd;
}
else
{
return -1;
}
}
/************************************************************************************************************
* Function name : get_next_assignment *
* *
* INPUT : char *filename *
* unsigned int *exponent *
* int *bit_min *
* int *bit_max *
* char *assignment_key[100];
* OUTPUT : *
* *
* 0 - OK *
* 1 - get_next_assignment : cannot open file *
* 2 - get_next_assignment : no valid assignment found *
************************************************************************************************************/
enum ASSIGNMENT_ERRORS get_next_assignment(char *filename, unsigned int *exponent, unsigned int *bit_min, unsigned int *bit_max, LINE_BUFFER *key, int verbosity)
{
FILE *f_in;
enum PARSE_WARNINGS value;
struct ASSIGNMENT assignment;
char *tail;
LINE_BUFFER line;
unsigned int linecount=0;
// first, make sure we have an up-to-date worktodo file
process_add_file(filename);
f_in = fopen_and_lock(filename, "r");
if(f_in == NULL)
{
printf("Can't open workfile %s\n", filename);
return CANT_OPEN_FILE; // nothing to open...
}
for(;;)
{
linecount++;
value = parse_worktodo_line(f_in,&assignment,&line,&tail);
if ((BLANK_LINE == value) || (NONBLANK_LINE == value))
continue;
if (NO_WARNING == value)
{
if (valid_assignment(assignment.exponent,assignment.bit_min, assignment.bit_max, verbosity))
break;
value = INVALID_DATA;
}
if (END_OF_FILE == value)
break;
if(verbosity >= 1)
{
printf("WARNING: ignoring line %u in \"%s\"! Reason: ", linecount, filename);
switch(value)
{
case LONG_LINE: printf("line is too long\n"); break;
case NO_FACTOR_EQUAL: printf("doesn't begin with Factor=\n");break;
case INVALID_FORMAT: printf("invalid format\n");break;
case INVALID_DATA: printf("invalid data\n");break;
default: printf("unknown error on >%s<",line); break;
}
}
}
unlock_and_fclose(f_in);
if (NO_WARNING == value)
{
*exponent = assignment.exponent;
*bit_min = assignment.bit_min;
*bit_max = assignment.bit_max;
if (key!=NULL)strcpy(*key,assignment.assignment_key);
return OK;
}
else
return VALID_ASSIGNMENT_NOT_FOUND;
}
