2007-12-14 Joel Sherrill <joel.sherrill@oarcorp.com>

	* libmisc/Makefile.am, libmisc/shell/cat_file.c,
	libmisc/shell/shell_makeargs.c, libmisc/shell/shellconfig.h: Rename
	cmd_XXX.c to main_XXX.c. Add cpuuse and stackuse commands.
	* libmisc/shell/main_alias.c, libmisc/shell/main_cat.c,
	libmisc/shell/main_cd.c, libmisc/shell/main_chdir.c,
	libmisc/shell/main_chmod.c, libmisc/shell/main_chroot.c,
	libmisc/shell/main_cpuuse.c, libmisc/shell/main_date.c,
	libmisc/shell/main_dir.c, libmisc/shell/main_exit.c,
	libmisc/shell/main_help.c, libmisc/shell/main_id.c,
	libmisc/shell/main_logoff.c, libmisc/shell/main_ls.c,
	libmisc/shell/main_mallocdump.c, libmisc/shell/main_mdump.c,
	libmisc/shell/main_medit.c, libmisc/shell/main_mfill.c,
	libmisc/shell/main_mkdir.c, libmisc/shell/main_mmove.c,
	libmisc/shell/main_mwdump.c, libmisc/shell/main_pwd.c,
	libmisc/shell/main_rm.c, libmisc/shell/main_rmdir.c,
	libmisc/shell/main_stackuse.c, libmisc/shell/main_tty.c,
	libmisc/shell/main_umask.c, libmisc/shell/main_whoami.c: New files.
	* libmisc/shell/cmd_alias.c, libmisc/shell/cmd_cat.c,
	libmisc/shell/cmd_cd.c, libmisc/shell/cmd_chdir.c,
	libmisc/shell/cmd_chmod.c, libmisc/shell/cmd_chroot.c,
	libmisc/shell/cmd_date.c, libmisc/shell/cmd_dir.c,
	libmisc/shell/cmd_exit.c, libmisc/shell/cmd_help.c,
	libmisc/shell/cmd_id.c, libmisc/shell/cmd_logoff.c,
	libmisc/shell/cmd_ls.c, libmisc/shell/cmd_mallocdump.c,
	libmisc/shell/cmd_mdump.c, libmisc/shell/cmd_medit.c,
	libmisc/shell/cmd_mfill.c, libmisc/shell/cmd_mkdir.c,
	libmisc/shell/cmd_mmove.c, libmisc/shell/cmd_mwdump.c,
	libmisc/shell/cmd_pwd.c, libmisc/shell/cmd_rm.c,
	libmisc/shell/cmd_rmdir.c, libmisc/shell/cmd_tty.c,
	libmisc/shell/cmd_umask.c, libmisc/shell/cmd_whoami.c: Removed.

1 files changed, 149 insertions, 0 deletions

diff --git a/cpukit/libmisc/shell/main_help.c b/cpukit/libmisc/shell/main_help.c
new file mode 100644
index 0000000000..964b511b2b
--- /dev/null
+++ b/cpukit/libmisc/shell/main_help.c
@@ -0,0 +1,149 @@
+/*
+ *
+ *  Shell Help Command
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ *
+ *  $Id$
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <time.h>
+
+#include <rtems.h>
+#include <rtems/error.h>
+#include <rtems/system.h>
+#include <rtems/shell.h>
+
+#include "internal.h"
+#include <string.h>
+
+/*
+ * show the help for one command.
+ */
+int shell_help_cmd(shell_cmd_t * shell_cmd) {
+  char * pc;
+  int    col,line;
+
+  printf("%-10.10s - ",shell_cmd->name);
+  col = 12;
+  line = 1;
+  if (shell_cmd->alias) {
+    printf("is an <alias> for command '%s'",shell_cmd->alias->name);
+  } else if (shell_cmd->usage) {
+    pc = shell_cmd->usage;
+    while (*pc) {
+      switch(*pc) {
+        case '\r':
+          break;
+        case '\n':
+          putchar('\n');
+          col = 0;
+          break;
+        default:
+          putchar(*pc);
+          col++;
+          break;
+      }
+      pc++;
+      if (col>78) { /* What daring... 78?*/
+        if (*pc) {
+          putchar('\n');
+          col = 0;
+        }
+      }
+      if (!col && *pc) {
+        printf("            ");
+        col = 12;line++;
+      }
+    }
+  }
+  puts("");
+  return line;
+}
+
+/*
+ * show the help. The first command implemented.
+ * Can you see the header of routine? Known?
+ * The same with all the commands....
+ */
+int shell_help(
+  int argc,
+  char * argv[]
+)
+{
+  int col,line,arg;
+  shell_topic_t *topic;
+  shell_cmd_t * shell_cmd = shell_first_cmd;
+
+  if (argc<2) {
+    printf("help: ('r' repeat last cmd - 'e' edit last cmd)\n"
+           "  TOPIC? The topics are\n");
+    topic = shell_first_topic;
+    col = 0;
+    while (topic) {
+      if (!col){
+        col = printf("   %s",topic->topic);
+      } else {
+        if ((col+strlen(topic->topic)+2)>78){
+          printf("\n");
+          col = printf("   %s",topic->topic);
+        } else {
+          col+= printf(", %s",topic->topic);
+        }
+      }
+      topic = topic->next;
+    }
+    printf("\n");
+    return 1;
+  }
+  line = 0;
+  for (arg = 1;arg<argc;arg++) {
+    if (line>16) {
+      printf("Press any key to continue...");getchar();
+      printf("\n");
+      line = 0;
+    }
+    topic  =  shell_lookup_topic(argv[arg]);
+    if (!topic){
+      if ((shell_cmd = shell_lookup_cmd(argv[arg])) == NULL) {
+        printf("help: topic or cmd '%s' not found. Try <help> alone for a list\n",
+            argv[arg]);
+        line++;
+      } else {
+        line+= shell_help_cmd(shell_cmd);
+      }
+      continue;
+    }
+    printf("help: list for the topic '%s'\n",argv[arg]);
+    line++;
+    while (shell_cmd) {
+      if (!strcmp(topic->topic,shell_cmd->topic))
+        line+= shell_help_cmd(shell_cmd);
+      if (line>16) {
+        printf("Press any key to continue...");
+        getchar();
+        printf("\n");
+        line = 0;
+      }
+      shell_cmd = shell_cmd->next;
+    }
+  }
+  puts("");
+  return 0;
+}
+
+shell_cmd_t Shell_HELP_Command  =  {
+  "help",                                       /* name  */
+   "help [topic] # list of usage of commands",  /* usage */
+  "help",                                       /* topic */
+  shell_help,                                   /* command */
+  NULL,                                         /* alias */
+  NULL                                          /* next */
+};