jim-readdir.c

   1
   2 /*
   3  * (c) 2008 Steve Bennett <steveb@worware.net.au>
   4  *
   5  * Tcl readdir command.
   6  *
   7  * The FreeBSD license
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above
  16  *    copyright notice, this list of conditions and the following
  17  *    disclaimer in the documentation and/or other materials
  18  *    provided with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE JIM TCL PROJECT ``AS IS'' AND ANY
  21  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  22  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  23  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  24  * JIM TCL PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  25  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  26  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  29  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  31  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  *
  33  * The views and conclusions contained in the software and documentation
  34  * are those of the authors and should not be interpreted as representing
  35  * official policies, either expressed or implied, of the Jim Tcl Project.
  36  *
  37  * Based on original work by:
  38  *-----------------------------------------------------------------------------
  39  * Copyright 1991-1994 Karl Lehenbauer and Mark Diekhans.
  40  *
  41  * Permission to use, copy, modify, and distribute this software and its
  42  * documentation for any purpose and without fee is hereby granted, provided
  43  * that the above copyright notice appear in all copies.  Karl Lehenbauer and
  44  * Mark Diekhans make no representations about the suitability of this
  45  * software for any purpose.  It is provided "as is" without express or
  46  * implied warranty.
  47  *-----------------------------------------------------------------------------
  48  */
  49
  50 #include <errno.h>
  51 #include <stdio.h>
  52 #include <string.h>
  53 #include <dirent.h>
  54
  55 #define JIM_EXTENSION
  56 #include "jim.h"
  57
  58 /*
  59  *-----------------------------------------------------------------------------
  60  *
  61  * Jim_ReaddirCmd --
  62  *     Implements the rename TCL command:
  63  *         readdir ?-nocomplain? dirPath
  64  *
  65  * Results:
  66  *      Standard TCL result.
  67  *-----------------------------------------------------------------------------
  68  */
  69 int Jim_ReaddirCmd(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
  70 {
  71     const char *dirPath;
  72     DIR *dirPtr;
  73     struct dirent *entryPtr;
  74     int nocomplain = 0;
  75
  76     if (argc == 3 && Jim_CompareStringImmediate(interp, argv[1], "-nocomplain")) {
  77         nocomplain = 1;
  78     }
  79     if (argc != 2 && !nocomplain) {
  80         Jim_WrongNumArgs(interp, 1, argv, "?-nocomplain? dirPath");
  81         return JIM_ERR;
  82     }
  83
  84     dirPath = Jim_GetString(argv[1 + nocomplain], NULL);
  85
  86     dirPtr = opendir(dirPath);
  87     if (dirPtr == NULL) {
  88         if (nocomplain) {
  89             return JIM_OK;
  90         }
  91         Jim_SetResultString(interp, strerror(errno), -1);
  92         return JIM_ERR;
  93     }
  94     Jim_SetResultString(interp, strerror(errno), -1);
  95
  96     Jim_SetResult(interp, Jim_NewListObj(interp, NULL, 0));
  97
  98     while ((entryPtr = readdir(dirPtr)) != NULL) {
  99         if (entryPtr->d_name[0] == '.') {
 100             if (entryPtr->d_name[1] == '\0') {
 101                 continue;
 102             }
 103             if ((entryPtr->d_name[1] == '.') && (entryPtr->d_name[2] == '\0'))
 104                 continue;
 105         }
 106         Jim_ListAppendElement(interp, Jim_GetResult(interp), Jim_NewStringObj(interp,
 107                 entryPtr->d_name, -1));
 108     }
 109     closedir(dirPtr);
 110
 111     return JIM_OK;
 112 }
 113
 114 int Jim_readdirInit(Jim_Interp *interp)
 115 {
 116     Jim_CreateCommand(interp, "readdir", Jim_ReaddirCmd, NULL, NULL);
 117     return JIM_OK;
 118 }