Actual source code: ex51.c
2: static char help[] = "Demonstrates PetscFileRetrieve().\n\n";
4: /*T
5: Concepts: introduction to PETSc;
6: Concepts: printing^in parallel
7: Processors: n
8: T*/
10: #include <petscsys.h>
11: int main(int argc,char **argv)
12: {
13: PetscBool found;
14: char localname[PETSC_MAX_PATH_LEN];
15: const char url[] = "https://www.mcs.anl.gov/petsc/index.html";
17: /*
18: Every PETSc routine should begin with the PetscInitialize() routine.
19: argc, argv - These command line arguments are taken to extract the options
20: supplied to PETSc and options supplied to MPI.
21: help - When PETSc executable is invoked with the option -help,
22: it prints the various options that can be applied at
23: runtime. The user can use the "help" variable place
24: additional help messages in this printout.
25: */
26: PetscInitialize(&argc,&argv,(char*)0,help);
27: PetscFileRetrieve(PETSC_COMM_WORLD,url,localname,PETSC_MAX_PATH_LEN,&found);
28: if (found) {
29: PetscPrintf(PETSC_COMM_WORLD,"Successfully download file %s\n",localname);
30: } else SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_PLIB,"Unable to download url %s",url);
32: PetscFinalize();
33: return 0;
34: }
36: /*TEST
38: test:
39: requires: defined(PETSC_HAVE_POPEN)
41: TEST*/