int main( int argc, const char *argv[] ) {
void *scanner;
FILE *input;
if( argc >= 2 ) input = fopen( argv[1], "r" );
else input = stdin;
if( input == NULL ) {
perror( "cannot open input file" );
exit( 1 );
}
if( argc >= 3 ) {
mkparent( argv[2] );
FILE *res = freopen( argv[2], "w", stdout );
if( res == NULL ) {
perror( "cannot open output file" );
exit( 1 );
}
}
yylex_init( &scanner );
yyset_in( input, scanner );
yyparse( scanner );
yylex_destroy( scanner );
exit(0);
}
void mkparent( const char *path ) {
// Duplicate the path so that we can modify it
char *dir = strdup(path);
if( dir == NULL ) {
perror( "Could not determine parent directory" );
exit( 1 );
}
// Search for the end of the path
char *cur = dir;
while( *cur != 0 ) cur++;
// Search backwards for the first path separator
while( --cur > dir ) {
if( *cur == '/' && *(cur-1) != '\\' ) {
*cur = 0;
break;
}
}
// If there was no parent then finish
if( cur == dir ) {
free( dir );
return;
}
// If the directory already exists then finish
struct stat st;
if( stat(dir,&st) == 0 ) {
free( dir );
return;
}
// Make the parent of the parent path
mkparent( dir );
// Make the parent
if( mkdir( dir, 0755 ) != 0 ) {
free( dir );
perror( "Could not make parent directory" );
exit( 1 );
}
// Free up the duplicated path
free( dir );
}
void
mkparent(const char *name)
{
char *buf, *tmp;
struct stat st;
buf = str_alloc(name);
if ((tmp=strrchr(buf, '/'))!=0)
{
*tmp = 0;
if (stat(buf, &st))
mkparent(buf);
mkdir(buf, 0755);
if (stat(buf, &st) ||
!S_ISDIR(st.st_mode))
ex("!dir");
}
free(buf);
}
void
dofile(const char *name)
{
int fd;
struct stat st;
char *s;
if ((fd=open(name, O_RDWR))<0)
swrite("?");
else if (fstat(fd, &st) ||
!S_ISREG(st.st_mode))
ex("open");
else
swrite_free(md5sum(fd, st.st_size));
s = sread();
switch (*s)
{
case 'o':
close(fd);
free(s);
return;
case 'a':
if (fd<0)
ex("!fd");
if (lseek(fd, st.st_size, SEEK_SET)!=st.st_size)
ex("lseek");
break;
case 'w':
if (fd<0)
ex("!fd");
close(fd);
fd = -1;
free(s);
s = newname(name);
if (rename(name, s))
ex("name");
case 'c':
if (fd>=0)
ex("fd!");
mkparent(name);
if ((fd=open(name, O_WRONLY|O_CREAT|O_EXCL, 0644))<0)
ex("create");
break;
default:
ex("prot");
}
free(s);
swrite("OK");
if (docopy(sock, fd, 1))
ex("broken stream");
if (close(fd))
ex("close");
swrite("NEXT");
}
