This program lists the subdirectories of the path passed to the program to a spooled file. You should call this program with only one parameter, the parameter that represents the directory you want to list.
/******************************************************************/
/******************************************************************/
/* FUNCTION: */
/* */
/* LANGUAGE: ILE C */
/* */
/* */
/* APIs USED: QHFOPNDR, QHFRDDR, QHFCLODR */
/* */
/******************************************************************/
/******************************************************************/
/******************************************************************/
/* INCLUDE FILES */
/******************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <qhfopndr.h>
#include <qhfrddr.h>
#include <qhfclodr.h>
#include <qusec.h>
char write_string[100];
FILE *stream;
void print_subdir(char name[100], int numtabs)
{
/******************************************************************/
/* Parameters for QHFOPNDR */
/******************************************************************/
char dir_handle[16]; /* Directory handle */
int namelen; /* Length of path name */
char openinfo[6]; /* Open information */
typedef struct {
Qhf_Attr_Selec_Tbl_t fixed;
int att_len;
char att_name[8];
} selection_struct;
selection_struct select;
int selectionlen;
/******************************************************************/
/* Error Code Structure */
/* */
/* This shows how the user can define the variable length */
/* portion of error code for the exception data. */
/* */
/******************************************************************/
typedef struct {
Qus_EC_t ec_fields;
char Exception_Data[100];
} error_code_t;
error_code_t error_code;
/******************************************************************/
/* Parameters for QHFRDDR */
/******************************************************************/
/* The directory handle is the same as for QHFOPNDR */
typedef struct {
Qhf_Data_Buffer_t fixed;
int num_att;
int offsets[2];
char attinfo[180];
} read_buffer;
read_buffer buffer;
int result_count;
int bytes_returned;
/******************************************************************/
/* Parameters for QHFCLODR */
/******************************************************************/
/* No additional ones need to be declared */
/******************************************************************/
/* Other declarations */
/******************************************************************/
char *att;
char attname[30];
char attval[30];
int attnamelen;
int attvallen;
char newname[30];
int newnamelen;
int filesize;
char fileatt[10];
char tab[5];
int bytes_used;
int i, j;
char charbin4[4];
char tempname[100];
error_code.ec_fields.Bytes_Provided = 0;
/****************************************************************/
/* Build the attribute selection table for QHFOPNDR. */
/****************************************************************/
select.fixed.Number_Attributes = 1;
select.fixed.Offset_First_Attr = 8;
select.att_len = 8;
memcpy(select.att_name, "QFILATTR", 8);
selectionlen = 20;
memcpy(openinfo, "10 ", 6);
memcpy(tab," ", 5);
/****************************************************************/
/* Find the length of the directory name. */
/****************************************************************/
for(i=0;i<100;i++)
{
if((name[i] == ' ') || (name[i] == '\x00'))
break;
}
namelen = i;
/****************************************************************/
/* Open the directory. */
/****************************************************************/
QHFOPNDR(dir_handle, name, namelen, openinfo, &select, selectionlen,
&error_code);
/****************************************************************/
/* Read one entry from the directory. */
/****************************************************************/
QHFRDDR(dir_handle, &buffer, 200, 1, &result_count, &bytes_returned,
&error_code);
fprintf(stream,"\n");
for(i=0;i<numtabs;i++)
fprintf(stream, tab);
fprintf(stream, name);
while(result_count > 0)
{
memcpy(attname," ",30);
memcpy(attval," ",30);
att = buffer.attinfo;
bytes_used = 12;
/**************************************************************/
/* Loop for the number of attributes in the entry. */
/**************************************************************/
for(i=0;i<buffer.num_att;i++)
{
memcpy(charbin4, att, 4);
attnamelen = *(int *)charbin4;
att += 4;
bytes_used += 4;
memcpy(charbin4, att, 4);
attvallen = *(int *)charbin4;
att += 8;
bytes_used += 8;
memcpy(attname, att, attnamelen);
att += attnamelen;
bytes_used += attnamelen;
memcpy(attval, att, attvallen);
att += attvallen;
bytes_used += attvallen;
/************************************************************/
/* Update att so that its first character is the first */
/* character of the next attribute entry. */
/************************************************************/
if ((bytes_used == buffer.offsets[i+1]) &&
((i+1) == buffer.num_att))
att += (buffer.offsets[i] - bytes_used);
/************************************************************/
/* If the attribute is QNAME, then set newname and */
/* newnamelen just in case the entry is a directory. */
/************************************************************/
if(!memcmp(attname, "QNAME", 5))
{
memcpy(newname, attval, attvallen);
newnamelen = attvallen;
}
/************************************************************/
/* Else the attribute was QFILATTR, so set fileatt. */
/************************************************************/
else
memcpy(fileatt, attval, 10);
}
/**************************************************************/
/* If the entry was a directory, construct new path name and */
/* print_subdir to print the subdirectory. */
/**************************************************************/
if(fileatt[3] == '1')
{
memcpy(tempname, name, 100);
strcat(name, "/");
strcat(name, newname);
memcpy(newname, name, namelen + newnamelen + 1);
print_subdir(newname, numtabs + 1);
memcpy(name, tempname, 100);
}
QHFRDDR(dir_handle, &buffer, 200, 1, &result_count, &bytes_returned,
&error_code);
} /* while */
/****************************************************************/
/* Close the directory. */
/****************************************************************/
QHFCLODR(dir_handle, &error_code);
}/* print_subdir */
main(int argc, char *argv[])
{
char dir_name[100];
/****************************************************************/
/* Make sure we received the correct number of parameters. The */
/* argc parameter will contain the number of parameters that */
/* was passed to this program. This number also includes the */
/* program itself, so we need to evaluate argc-1. */
/****************************************************************/
if (((argc - 1) < 1) || ((argc - 1 > 1)))
/****************************************************************/
/* We did not receive all of the required parameters, or */
/* received too many. Exit from the program. */
/****************************************************************/
{
exit(1);
}
/****************************************************************/
/* Open QPRINT file so that data can be written to it. If the */
/* file cannot be opened, print a message and exit. */
/****************************************************************/
if((stream = fopen("QPRINT", "wb")) == NULL)
{
printf("File could not be opened\n");
exit(1);
}
memset(dir_name, ' ', 100);
memcpy(dir_name, argv[1], 100);
if(!memcmp(dir_name, " ", 1))
{
fprintf(stream,"No directory specified");
}
else
{
fprintf(stream,"Directory substructure starting at %.100s", dir_name);
print_subdir(dir_name, 0);
}
fclose(stream);
} /* main */