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readline/NSH: Extend the tab-completion logic so that NSH commands can also be completed by pressing the tab key

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This commit is contained in:
Gregory Nutt
2015-07-30 12:11:58 -06:00
parent 0c85a9f4b3
commit 820c5c42dd
8 changed files with 401 additions and 36 deletions
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74
nshlib/nsh_command.c
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@@ -45,6 +45,10 @@
# include <nuttx/binfmt/builtin.h>
#endif
#if defined(CONFIG_SYSTEM_READLINE) && defined(CONFIG_READLINE_HAVE_EXTMATCH)
# include <apps/readline.h>
#endif
#include "nsh.h"
#include "nsh_console.h"
@@ -824,3 +828,73 @@ int nsh_command(FAR struct nsh_vtbl_s *vtbl, int argc, char *argv[])
ret = handler(vtbl, argc, argv);
return ret;
}
/****************************************************************************
* Name: nsh_extmatch_count
*
* Description:
* This support function is used to provide support for realine tab-
* completion logic nsh_extmatch_count() counts the number of matching
* nsh command names
*
* Input Parameters:
* name - A point to the name containing the name to be matched.
* matches - A table is size CONFIG_READLINE_MAX_EXTCMDS that can
* be used to remember matching name indices.
* namelen - The lenght of the name to match
*
* Returned Values:
* The number commands that match to the first namelen characters.
*
****************************************************************************/
#if defined(CONFIG_NSH_READLINE) && defined(CONFIG_READLINE_TABCOMPLETION) && \
defined(CONFIG_READLINE_HAVE_EXTMATCH)
int nsh_extmatch_count(FAR char *name, FAR int *matches, int namelen)
{
int nr_matches = 0;
int i;
for (i = 0; i < NUM_CMDS; i++)
{
if (strncmp(name, g_cmdmap[i].cmd, namelen) == 0)
{
matches[nr_matches] = i;
nr_matches++;
if (nr_matches >= CONFIG_READLINE_MAX_EXTCMDS)
{
break;
}
}
}
return nr_matches;
}
#endif
/****************************************************************************
* Name: nsh_extmatch_getname
*
* Description:
* This support function is used to provide support for realine tab-
* completion logic nsh_extmatch_getname() will return the full command
* string from an index that was previously saved by nsh_exmatch_count().
*
* Input Parameters:
* index - The index of the command name to be returned.
*
* Returned Values:
* The numb
*
****************************************************************************/
#if defined(CONFIG_NSH_READLINE) && defined(CONFIG_READLINE_TABCOMPLETION) && \
defined(CONFIG_READLINE_HAVE_EXTMATCH)
FAR const char *nsh_extmatch_getname(int index)
{
DEBUGASSERT(index > 0 && index <= NUM_CMDS);
return g_cmdmap[index].cmd;
}
#endif