src/client/cmdline/cmd_cd.c

   1 /* $Id$
   2  * client cmdline interface command "cd" for libcaptive
   3  * Copyright (C) 2003 Jan Kratochvil <project-captive@jankratochvil.net>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; exactly version 2 of June 1991 is required
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19
  20 #include "config.h"
  21
  22 #include <glib/gmessages.h>
  23 #include <glib/gerror.h>
  24 #include <popt.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <captive/client-directory.h>
  28 #include <stdio.h>
  29 #include <captive/client.h>
  30
  31 #include "cmd_cd.h"     /* self */
  32 #include "main.h"
  33
  34
  35 /* Config: */
  36 #define STATICS_NUM (5)
  37
  38
  39 const gchar *cmdline_cwd;
  40
  41
  42 GQuark cmdline_cmd_cd_error_quark(void)
  43 {
  44 GQuark r=0;
  45
  46         if (!r)
  47                 r=g_quark_from_static_string("cmdline-cmd-cd");
  48
  49         return r;
  50 }
  51
  52
  53 const struct poptOption cmd_cd_table[]={
  54                 CMDLINE_POPT_AUTOHELP
  55                 POPT_TABLEEND
  56                 };
  57
  58
  59 /* Returns: statically allocated absolute pathname string */
  60 G_CONST_RETURN gchar *cmdline_path_from_cwd(const gchar *relative)
  61 {
  62 static gchar *statics[STATICS_NUM];
  63 static int staticsi=0;
  64 gchar *r,*s;
  65
  66         /* 'relative' may be NULL for the '.' meaning */
  67
  68         if (!cmdline_cwd || (relative && *relative==G_DIR_SEPARATOR)) { /* bootstrap or absolute */
  69                 g_assert(g_path_is_absolute(relative));
  70                 s=g_strdup(relative);
  71                 }
  72         else if (!relative)
  73                 s=g_strdup(cmdline_cwd);
  74         else
  75                 s=g_build_filename(cmdline_cwd,relative,NULL);
  76         g_assert(g_path_is_absolute(s));
  77
  78         r=captive_path_normalize(s);
  79         g_free(s);
  80
  81         g_free(statics[staticsi]);
  82         statics[staticsi++]=r;
  83         staticsi%=G_N_ELEMENTS(statics);
  84
  85         return r;
  86 }
  87
  88
  89 void cmd_cd_internal(const gchar *targetdir,GError **errp)
  90 {
  91 CaptiveDirectoryObject *captive_directory_object;
  92
  93         g_return_if_fail(targetdir!=NULL);
  94         g_return_if_fail(!errp || !*errp);
  95
  96         if (!errvfsresult_to_gerr(errp,captive_directory_new_open(
  97                         &captive_directory_object,      /* captive_directory_object_return */
  98                         cmdline_captive_vfs_object,     /* captive_vfs_object */
  99                         targetdir))) {  /* pathname */
 100                 err_cleanup(errp);
 101                 g_set_error(errp,CMDLINE_CMD_CD_ERROR,CMDLINE_CMD_CD_ERROR_CANNOT_OPEN_DIRECTORY,
 102                                 _("Cannot open directory: %s"),targetdir);
 103                 return;
 104                 }
 105
 106         g_object_unref(captive_directory_object);
 107
 108         g_free((/*de-const*/ gchar *)cmdline_cwd);
 109         cmdline_cwd=g_strdup(targetdir);
 110         g_assert(g_path_is_absolute(cmdline_cwd));
 111 }
 112
 113
 114 void cmd_cd(const char **cmd_argv,GError **errp)
 115 {
 116         g_return_if_fail(!errp || !*errp);
 117
 118         if (cmd_argv[0])
 119                 cmd_cd_internal(cmdline_path_from_cwd(cmd_argv[0]),errp);
 120
 121         printf("Guest-OS CWD: %s\n",cmdline_cwd);
 122 }