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Import argp-test.c from glibc 2.33. 

This change assumes that asprintf is always available.
This commit is contained in:
Érico Rolim 2021-02-10 16:52:22 -03:00
parent 06a70d506f
commit a5fcbcecd9
1 changed files with 31 additions and 73 deletions
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104
argp-test.c
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@ -1,22 +1,21 @@
/* Test program for argp argument parser /* Test program for argp argument parser
Copyright (C) 1997 Free Software Foundation, Inc. Copyright (C) 1997-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
Written by Miles Bader <miles@gnu.ai.mit.edu>. Written by Miles Bader <miles@gnu.ai.mit.edu>.
The GNU C Library is free software; you can redistribute it and/or The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as modify it under the terms of the GNU Lesser General Public
published by the Free Software Foundation; either version 2 of the License as published by the Free Software Foundation; either
License, or (at your option) any later version. version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful, The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details. Lesser General Public License for more details.
You should have received a copy of the GNU Library General Public You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; see the file COPYING.LIB. If not, License along with the GNU C Library; if not, see
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, <https://www.gnu.org/licenses/>. */
Boston, MA 02111-1307, USA. */
#ifndef _GNU_SOURCE #ifndef _GNU_SOURCE
# define _GNU_SOURCE 1 # define _GNU_SOURCE 1
@ -29,66 +28,28 @@
#include <stdlib.h> #include <stdlib.h>
#include <time.h> #include <time.h>
#include <string.h> #include <string.h>
#include <stdio.h> #include <argp.h>
#include "argp.h"
#if !HAVE_ASPRINTF
#include <stdarg.h>
static int
asprintf (char **result, const char *format, ...)
{
size_t size;
char *p;
for (size = 200, p = NULL;; size *= 2)
{
va_list args;
int written;
p = realloc(p, size + 1);
if (!p)
{
fprintf(stderr, "Virtual memory exhausted.\n");
abort();
}
p[size] = '\0';
va_start(args, format);
written = vsnprintf(p, size, format, args);
va_end(args);
if (written >= 0)
{
*result = p;
return written;
}
}
}
#endif /* !HAVE_ASPRINTF */
const char *argp_program_version = "argp-test 1.0"; const char *argp_program_version = "argp-test 1.0";
struct argp_option sub_options[] = struct argp_option sub_options[] =
{ {
{"subopt1", 's', 0, 0, "Nested option 1", 0}, {"subopt1", 's', 0, 0, "Nested option 1"},
{"subopt2", 'S', 0, 0, "Nested option 2", 0}, {"subopt2", 'S', 0, 0, "Nested option 2"},
{ 0, 0, 0, 0, "Some more nested options:", 10}, { 0, 0, 0, 0, "Some more nested options:", 10},
{"subopt3", 'p', 0, 0, "Nested option 3", 0}, {"subopt3", 'p', 0, 0, "Nested option 3"},
{"subopt4", 'q', 0, 0, "Nested option 4", 1}, {"subopt4", 'q', 0, 0, "Nested option 4", 1},
{0, 0, 0, 0, 0, 0} {0}
}; };
static const char sub_args_doc[] = "STRING...\n-"; static const char sub_args_doc[] = "STRING...\n-";
static const char sub_doc[] = "\vThis is the doc string from the sub-arg-parser."; static const char sub_doc[] = "\vThis is the doc string from the sub-arg-parser.";
static error_t static error_t
sub_parse_opt (int key, char *arg, struct argp_state *state UNUSED) sub_parse_opt (int key, char *arg, struct argp_state *state)
{ {
switch (key) switch (key)
{ {
@ -110,7 +71,7 @@ sub_parse_opt (int key, char *arg, struct argp_state *state UNUSED)
} }
static char * static char *
sub_help_filter (int key, const char *text, void *input UNUSED) sub_help_filter (int key, const char *text, void *input)
{ {
if (key == ARGP_KEY_HELP_EXTRA) if (key == ARGP_KEY_HELP_EXTRA)
return strdup ("This is some extra text from the sub parser (note that it \ return strdup ("This is some extra text from the sub parser (note that it \
@ -120,7 +81,7 @@ is preceded by a blank line).");
} }
static struct argp sub_argp = { static struct argp sub_argp = {
sub_options, sub_parse_opt, sub_args_doc, sub_doc, 0, sub_help_filter, 0 sub_options, sub_parse_opt, sub_args_doc, sub_doc, 0, sub_help_filter
}; };
/* Structure used to communicate with the parsing functions. */ /* Structure used to communicate with the parsing functions. */
@ -135,26 +96,26 @@ struct params
struct argp_option options[] = struct argp_option options[] =
{ {
{"pid", 'p', "PID", 0, "List the process PID", 0}, {"pid", 'p', "PID", 0, "List the process PID"},
{"pgrp", OPT_PGRP,"PGRP",0, "List processes in the process group PGRP", 0}, {"pgrp", OPT_PGRP,"PGRP",0, "List processes in the process group PGRP"},
{"no-parent", 'P', 0, 0, "Include processes without parents", 0}, {"no-parent", 'P', 0, 0, "Include processes without parents"},
{0, 'x', 0, OPTION_ALIAS, NULL, 0}, {0, 'x', 0, OPTION_ALIAS},
{"all-fields",'Q', 0, 0, "Don't elide unusable fields (normally" {"all-fields",'Q', 0, 0, "Don't elide unusable fields (normally"
" if there's some reason ps can't" " if there's some reason ps can't"
" print a field for any process, it's" " print a field for any process, it's"
" removed from the output entirely)", 0}, " removed from the output entirely)" },
{"reverse", 'r', 0, 0, "Reverse the order of any sort", 0}, {"reverse", 'r', 0, 0, "Reverse the order of any sort"},
{"gratuitously-long-reverse-option", 0, 0, OPTION_ALIAS, NULL, 0}, {"gratuitously-long-reverse-option", 0, 0, OPTION_ALIAS},
{"session", OPT_SESS,"SID", OPTION_ARG_OPTIONAL, {"session", OPT_SESS,"SID", OPTION_ARG_OPTIONAL,
"Add the processes from the session" "Add the processes from the session"
" SID (which defaults to the sid of" " SID (which defaults to the sid of"
" the current process)", 0}, " the current process)" },
{0,0,0,0, "Here are some more options:", 0}, {0,0,0,0, "Here are some more options:"},
{"foonly", 'f', "ZOT", OPTION_ARG_OPTIONAL, "Glork a foonly", 0}, {"foonly", 'f', "ZOT", OPTION_ARG_OPTIONAL, "Glork a foonly"},
{"zaza", 'z', 0, 0, "Snit a zar", 0}, {"zaza", 'z', 0, 0, "Snit a zar"},
{0, 0, 0, 0, 0, 0} {0}
}; };
static const char args_doc[] = "STRING"; static const char args_doc[] = "STRING";
@ -166,7 +127,7 @@ static const char doc[] = "Test program for argp."
static void static void
popt (int key, char *arg) popt (int key, char *arg)
{ {
char buf[10]; char buf[12];
if (isprint (key)) if (isprint (key))
sprintf (buf, "%c", key); sprintf (buf, "%c", key);
else else
@ -234,12 +195,9 @@ help_filter (int key, const char *text, void *input)
return new_text; return new_text;
} }
static struct argp_child argp_children[] = { static struct argp_child argp_children[] = { { &sub_argp }, { 0 } };
{ &sub_argp, 0, 0, 0 }, { 0, 0, 0, 0 }
};
static struct argp argp = { static struct argp argp = {
options, parse_opt, args_doc, doc, argp_children, help_filter, 0 options, parse_opt, args_doc, doc, argp_children, help_filter
}; };
int int