309 lines
12 KiB
HTML
309 lines
12 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="Example: Listing subdirectories" />
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<meta name="abstract" content="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." />
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<meta name="description" content="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." />
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<meta name="DC.Relation" scheme="URI" content="apiexmp.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="apiexlissub" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Example: Listing subdirectories</title>
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</head>
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<body id="apiexlissub"><a name="apiexlissub"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Example: Listing subdirectories</h1>
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<div><p>This program lists the subdirectories of the path passed to the
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program to a spooled file. You should call this program with
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only one parameter, the parameter that represents the directory you want to
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list.</p>
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<div class="section"><div class="note"><span class="notetitle">Note:</span> Read the <a href="codedisclaimer.htm">Code license and disclaimer information</a> for important
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legal information.</div>
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<pre>/******************************************************************/
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/******************************************************************/
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/* FUNCTION: */
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/* */
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/* LANGUAGE: ILE C */
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/* */
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/* */
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/* APIs USED: QHFOPNDR, QHFRDDR, QHFCLODR */
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/* */
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/******************************************************************/
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/******************************************************************/
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/******************************************************************/
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/* INCLUDE FILES */
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/******************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <qhfopndr.h>
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#include <qhfrddr.h>
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#include <qhfclodr.h>
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#include <qusec.h>
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char write_string[100];
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FILE *stream;
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void print_subdir(char name[100], int numtabs)
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{
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/******************************************************************/
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/* Parameters for QHFOPNDR */
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/******************************************************************/
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char dir_handle[16]; /* Directory handle */
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int namelen; /* Length of path name */
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char openinfo[6]; /* Open information */
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typedef struct {
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Qhf_Attr_Selec_Tbl_t fixed;
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int att_len;
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char att_name[8];
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} selection_struct;
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selection_struct select;
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int selectionlen;
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/******************************************************************/
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/* Error Code Structure */
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/* */
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/* This shows how the user can define the variable length */
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/* portion of error code for the exception data. */
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/* */
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/******************************************************************/
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typedef struct {
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Qus_EC_t ec_fields;
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char Exception_Data[100];
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} error_code_t;
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error_code_t error_code;
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/******************************************************************/
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/* Parameters for QHFRDDR */
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/******************************************************************/
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/* The directory handle is the same as for QHFOPNDR */
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typedef struct {
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Qhf_Data_Buffer_t fixed;
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int num_att;
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int offsets[2];
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char attinfo[180];
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} read_buffer;
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read_buffer buffer;
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int result_count;
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int bytes_returned;
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/******************************************************************/
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/* Parameters for QHFCLODR */
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/******************************************************************/
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/* No additional ones need to be declared */
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/******************************************************************/
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/* Other declarations */
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/******************************************************************/
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char *att;
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char attname[30];
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char attval[30];
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int attnamelen;
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int attvallen;
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char newname[30];
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int newnamelen;
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int filesize;
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char fileatt[10];
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char tab[5];
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int bytes_used;
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int i, j;
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char charbin4[4];
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char tempname[100];
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error_code.ec_fields.Bytes_Provided = 0;
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/****************************************************************/
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/* Build the attribute selection table for QHFOPNDR. */
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/****************************************************************/
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select.fixed.Number_Attributes = 1;
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select.fixed.Offset_First_Attr = 8;
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select.att_len = 8;
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memcpy(select.att_name, "QFILATTR", 8);
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selectionlen = 20;
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memcpy(openinfo, "10 ", 6);
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memcpy(tab," ", 5);
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/****************************************************************/
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/* Find the length of the directory name. */
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/****************************************************************/
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for(i=0;i<100;i++)
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{
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if((name[i] == ' ') || (name[i] == '\x00'))
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break;
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}
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namelen = i;
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/****************************************************************/
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/* Open the directory. */
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/****************************************************************/
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QHFOPNDR(dir_handle, name, namelen, openinfo, &select, selectionlen,
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&error_code);
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/****************************************************************/
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/* Read one entry from the directory. */
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/****************************************************************/
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QHFRDDR(dir_handle, &buffer, 200, 1, &result_count, &bytes_returned,
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&error_code);
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fprintf(stream,"\n");
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for(i=0;i<numtabs;i++)
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fprintf(stream, tab);
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fprintf(stream, name);
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while(result_count > 0)
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{
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memcpy(attname," ",30);
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memcpy(attval," ",30);
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att = buffer.attinfo;
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bytes_used = 12;
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/**************************************************************/
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/* Loop for the number of attributes in the entry. */
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/**************************************************************/
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for(i=0;i<buffer.num_att;i++)
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{
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memcpy(charbin4, att, 4);
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attnamelen = *(int *)charbin4;
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att += 4;
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bytes_used += 4;
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memcpy(charbin4, att, 4);
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attvallen = *(int *)charbin4;
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att += 8;
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bytes_used += 8;
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memcpy(attname, att, attnamelen);
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att += attnamelen;
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bytes_used += attnamelen;
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memcpy(attval, att, attvallen);
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att += attvallen;
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bytes_used += attvallen;
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/************************************************************/
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/* Update att so that its first character is the first */
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/* character of the next attribute entry. */
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/************************************************************/
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if ((bytes_used == buffer.offsets[i+1]) &&
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((i+1) == buffer.num_att))
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att += (buffer.offsets[i] - bytes_used);
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/************************************************************/
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/* If the attribute is QNAME, then set newname and */
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/* newnamelen just in case the entry is a directory. */
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/************************************************************/
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if(!memcmp(attname, "QNAME", 5))
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{
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memcpy(newname, attval, attvallen);
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newnamelen = attvallen;
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}
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/************************************************************/
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/* Else the attribute was QFILATTR, so set fileatt. */
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/************************************************************/
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else
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memcpy(fileatt, attval, 10);
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}
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/**************************************************************/
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/* If the entry was a directory, construct new path name and */
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/* print_subdir to print the subdirectory. */
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/**************************************************************/
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if(fileatt[3] == '1')
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{
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memcpy(tempname, name, 100);
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strcat(name, "/");
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strcat(name, newname);
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memcpy(newname, name, namelen + newnamelen + 1);
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print_subdir(newname, numtabs + 1);
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memcpy(name, tempname, 100);
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}
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QHFRDDR(dir_handle, &buffer, 200, 1, &result_count, &bytes_returned,
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&error_code);
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} /* while */
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/****************************************************************/
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/* Close the directory. */
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/****************************************************************/
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QHFCLODR(dir_handle, &error_code);
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}/* print_subdir */
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main(int argc, char *argv[])
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{
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char dir_name[100];
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/****************************************************************/
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/* Make sure we received the correct number of parameters. The */
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/* argc parameter will contain the number of parameters that */
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/* was passed to this program. This number also includes the */
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/* program itself, so we need to evaluate argc-1. */
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/****************************************************************/
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if (((argc - 1) < 1) || ((argc - 1 > 1)))
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/****************************************************************/
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/* We did not receive all of the required parameters, or */
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/* received too many. Exit from the program. */
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/****************************************************************/
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{
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exit(1);
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}
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/****************************************************************/
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/* Open QPRINT file so that data can be written to it. If the */
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/* file cannot be opened, print a message and exit. */
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/****************************************************************/
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if((stream = fopen("QPRINT", "wb")) == NULL)
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{
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printf("File could not be opened\n");
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exit(1);
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}
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memset(dir_name, ' ', 100);
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memcpy(dir_name, argv[1], 100);
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if(!memcmp(dir_name, " ", 1))
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{
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fprintf(stream,"No directory specified");
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}
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else
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{
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fprintf(stream,"Directory substructure starting at %.100s", dir_name);
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print_subdir(dir_name, 0);
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}
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fclose(stream);
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} /* main */
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</pre>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="apiexmp.htm" title="Contains example programs that use APIs and exit programs.">Examples: APIs</a></div>
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</div>
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</div>
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</body>
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</html>
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