kolibrios/programs/system/shell/cmd/cmd_mv.c
Rustem Gimadutdinov (rgimad) 68cf3e4293 SHELL 0.8.2
- big refactoring, now uses libc.obj
- added kfetch command

git-svn-id: svn://kolibrios.org@8827 a494cfbc-eb01-0410-851d-a64ba20cac60
2021-06-12 21:34:41 +00:00

160 lines
3.9 KiB
C

int cmd_mv(char param[])
{
char* argv[100];
int argc;
char *filename_in = NULL;
char *filename_out = NULL;
char *buffer = NULL;
kol_struct70 k70_in;
kol_struct70 k70_out;
kol_struct_BDVK bdvk;
unsigned long long filesize;
unsigned result, buf_size;
argc = parameters_prepare(param, argv);
/*
argv[0] - path (abs or rel) to file
argv[1] - new location: path (abs or rel) to dir or file
*/
if (argc != 2)
{
printf(CMD_MV_USAGE);
parameters_free(argc, argv);
return TRUE;
}
filename_in = (char*) malloc(FILENAME_MAX);
filename_out = (char*) malloc(FILENAME_MAX);
if (argv[0][0] != '/')
{
strcpy(filename_in, cur_dir);
if (filename_in[strlen(filename_in)-1] != '/')
{
strcat(filename_in, "/"); // add slash
}
strcat(filename_in, argv[0]);
} else
{
strcpy(filename_in, argv[0]);
}
// -----
if (argv[1][0] != '/')
{
strcpy(filename_out, cur_dir);
if (filename_out[strlen(filename_out)-1] != '/')
{
strcat(filename_out, "/"); // add slash
}
strcat(filename_out, argv[1]);
} else
{
strcpy(filename_out, argv[1]);
}
// add ability to use directory as destination
if ( dir_check(filename_out) )
{
char *fname = strrchr(filename_in, '/') + 1; // always exist, as we add curdir
if (filename_out[strlen(filename_out)-1] != '/')
{
strcat(filename_out, "/"); // add slash
}
strcat(filename_out, fname);
}
if (strcmp(filename_in, filename_out) == 0) // if source file and destination file are same then exist with success
{
result = 0;
goto lbl_exit;
}
k70_in.p00 = 5;
k70_in.p04 = 0LL;
k70_in.p12 = 0;
k70_in.p16 = (unsigned) &bdvk;
k70_in.p20 = 0;
k70_in.p21 = filename_in;
result = kol_file_70(&k70_in); // get information about file
if ( 0 != result )
goto lbl_exit;
// count buffer size up to 1Mb, but no more than 1/2 of free memory
buf_size = 1 << 20; // 1Mb
while( ((buf_size >> 10) > kol_system_memfree()) && (buf_size > 4096) )
buf_size /= 2;
filesize = bdvk.p32; // getting file size (restriction - 4 GB only for FAT)
if (buf_size > filesize)
buf_size = (unsigned)filesize; // may be zero!
if (buf_size == 0) buf_size = 4096; // ...
buffer = (char*) malloc(buf_size);
if (!buffer)
{
result = E_NOMEM;
goto lbl_exit;
}
k70_in.p00 = 0;
//k70_in.p08 = 0;
k70_in.p12 = buf_size;
k70_in.p16 = (unsigned) buffer;
k70_in.p20 = 0;
k70_in.p21 = filename_in;
k70_out.p00 = 2;
//k70_out.p08 = 0;
k70_out.p12 = buf_size;
k70_out.p16 = (unsigned) buffer;
k70_out.p20 = 0;
k70_out.p21 = filename_out;
unsigned long long offset = 0;
do
{
k70_in.p04 = offset;
if (offset + buf_size > filesize) // last chunk
{
k70_in.p12 = k70_out.p12 = (unsigned)(filesize - offset); // filesize % buf_size;
}
result = kol_file_70(&k70_in); // read
if (result != 0)
{
goto lbl_exit;
}
k70_out.p04 = offset;
result = kol_file_70(&k70_out); // write
if (result != 0)
{
goto lbl_exit;
}
if (k70_out.p00 == 2)
{
k70_out.p00 = 3; // changing function from create (2) to append (3)
}
offset += buf_size;
} while (offset < filesize);
cmd_rm(filename_in); // remove source file
lbl_exit:
parameters_free(argc, argv);
free(filename_in);
free(filename_out);
free(buffer);
return (result == 0);
}