LineageOS/android_external_bash
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Imported from ../bash-2.0.tar.gz.

Browse Source
This commit is contained in:
Jari Aalto
1996-12-23 17:02:34 +00:00
parent 726f63884d
commit ccc6cda312
502 changed files with 91988 additions and 69123 deletions
Download Patch File Download Diff File Expand all files Collapse all files

179
builtins/help.def
View File

@@ -23,112 +23,131 @@ $PRODUCES help.c
$BUILTIN help
$FUNCTION help_builtin
$DEPENDS_ON HELP_BUILTIN
$SHORT_DOC help [pattern ...]
Display helpful information about builtin commands. If PATTERN is
specified, gives detailed help on all commands matching PATTERN,
otherwise a list of the builtins is printed.
$END
#include <config.h>
#if defined (HELP_BUILTIN)
#include <stdio.h>
#if defined (HAVE_UNISTD_H)
# include <unistd.h>
#endif
#include "../shell.h"
#include "../builtins.h"
#include "bashgetopt.h"
#if defined (USE_GLOB_LIBRARY)
# include <glob/glob.h>
#else
# define FNM_NOMATCH 1
#endif /* USE_GLOB_LIBRARY */
#include <glob/fnmatch.h>
#include <glob/glob.h>
static void show_builtin_command_help ();
/* Print out a list of the known functions in the shell, and what they do.
If LIST is supplied, print out the list which matches for each pattern
specified. */
int
help_builtin (list)
WORD_LIST *list;
{
if (!list)
{
register int i, j;
char blurb[256];
register int i, j;
char *pattern, *name;
int plen, match_found;
show_shell_version ();
printf (
"Shell commands that are defined internally. Type `help' to see this list.\n\
if (list == 0)
{
show_shell_version (0);
show_builtin_command_help ();
return (EXECUTION_SUCCESS);
}
/* Placeholder for future options. */
reset_internal_getopt ();
while ((i = internal_getopt (list, "")) != -1)
{
switch (i)
{
default:
builtin_usage ();
return (EX_USAGE);
}
}
list = loptend;
/* We should consider making `help bash' do something. */
if (glob_pattern_p (list->word->word))
{
printf ("Shell commands matching keyword%s `", list->next ? "s" : "");
print_word_list (list, ", ");
printf ("'\n\n");
}
for (match_found = 0, pattern = ""; list; list = list->next)
{
pattern = list->word->word;
plen = strlen (pattern);
for (i = 0; name = shell_builtins[i].name; i++)
{
QUIT;
if ((strncmp (pattern, name, plen) == 0) ||
(fnmatch (pattern, name, 0) != FNM_NOMATCH))
{
printf ("%s: %s\n", name, shell_builtins[i].short_doc);
for (j = 0; shell_builtins[i].long_doc[j]; j++)
printf (" %s\n", shell_builtins[i].long_doc[j]);
match_found++;
}
}
}
if (match_found == 0)
{
builtin_error ("no help topics match `%s'. Try `help help'.", pattern);
return (EXECUTION_FAILURE);
}
fflush (stdout);
return (EXECUTION_SUCCESS);
}
static void
show_builtin_command_help ()
{
int i, j;
char blurb[36];
printf (
"These shell commands are defined internally. Type `help' to see this list.\n\
Type `help name' to find out more about the function `name'.\n\
Use `info bash' to find out more about the shell in general.\n\
\n\
A star (*) next to a name means that the command is disabled.\n\
\n");
for (i = 0; i < num_shell_builtins; i++)
{
QUIT;
sprintf (blurb, "%c%s",
(shell_builtins[i].flags & BUILTIN_ENABLED) ? ' ' : '*',
shell_builtins[i].short_doc);
for (i = 0; i < num_shell_builtins; i++)
{
QUIT;
blurb[0] = (shell_builtins[i].flags & BUILTIN_ENABLED) ? ' ' : '*';
strncpy (blurb + 1, shell_builtins[i].short_doc, 34);
blurb[35] = '\0';
printf ("%s", blurb);
blurb[35] = '\0';
printf ("%s", blurb);
if (i % 2)
printf ("\n");
else
for (j = strlen (blurb); j < 35; j++)
putc (' ', stdout);
}
if (i % 2)
printf ("\n");
else
for (j = strlen (blurb); j < 35; j++)
putc (' ', stdout);
}
else
{
int match_found = 0;
char *pattern = "";
if (glob_pattern_p (list->word->word))
{
printf ("Shell commands matching keyword%s `",
list->next ? "s" : "");
print_word_list (list, ", ");
printf ("'\n\n");
}
while (list)
{
register int i = 0, plen;
char *name;
pattern = list->word->word;
plen = strlen (pattern);
while (name = shell_builtins[i].name)
{
int doc_index;
QUIT;
if ((strncmp (pattern, name, plen) == 0) ||
(fnmatch (pattern, name, 0) != FNM_NOMATCH))
{
printf ("%s: %s\n", name, shell_builtins[i].short_doc);
for (doc_index = 0;
shell_builtins[i].long_doc[doc_index]; doc_index++)
printf (" %s\n", shell_builtins[i].long_doc[doc_index]);
match_found++;
}
i++;
}
list = list->next;
}
if (!match_found)
{
fprintf (stderr, "No help topics match `%s'. Try `help help'.\n",
pattern);
fflush (stderr);
return (EXECUTION_FAILURE);
}
}
fflush (stdout);
return (EXECUTION_SUCCESS);
if (i % 2)
printf ("\n");
}
#endif /* HELP_BUILTIN */