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Diffstat (limited to 'REORG.TODO/argp/argp-test.c')
| -rw-r--r-- | REORG.TODO/argp/argp-test.c | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/REORG.TODO/argp/argp-test.c b/REORG.TODO/argp/argp-test.c new file mode 100644 index 0000000000..150b852e5f --- /dev/null +++ b/REORG.TODO/argp/argp-test.c @@ -0,0 +1,208 @@ +/* Test program for argp argument parser + Copyright (C) 1997-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Written by Miles Bader <miles@gnu.ai.mit.edu>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + 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, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdlib.h> +#include <time.h> +#include <string.h> +#include <argp.h> + +const char *argp_program_version = "argp-test 1.0"; + +struct argp_option sub_options[] = +{ + {"subopt1", 's', 0, 0, "Nested option 1"}, + {"subopt2", 'S', 0, 0, "Nested option 2"}, + + { 0, 0, 0, 0, "Some more nested options:", 10}, + {"subopt3", 'p', 0, 0, "Nested option 3"}, + + {"subopt4", 'q', 0, 0, "Nested option 4", 1}, + + {0} +}; + +static const char sub_args_doc[] = "STRING...\n-"; +static const char sub_doc[] = "\vThis is the doc string from the sub-arg-parser."; + +static error_t +sub_parse_opt (int key, char *arg, struct argp_state *state) +{ + switch (key) + { + case ARGP_KEY_NO_ARGS: + printf ("NO SUB ARGS\n"); + break; + case ARGP_KEY_ARG: + printf ("SUB ARG: %s\n", arg); + break; + + case 's' : case 'S': case 'p': case 'q': + printf ("SUB KEY %c\n", key); + break; + + default: + return ARGP_ERR_UNKNOWN; + } + return 0; +} + +static char * +sub_help_filter (int key, const char *text, void *input) +{ + if (key == ARGP_KEY_HELP_EXTRA) + return strdup ("This is some extra text from the sub parser (note that it \ +is preceded by a blank line)."); + else + return (char *)text; +} + +static struct argp sub_argp = { + sub_options, sub_parse_opt, sub_args_doc, sub_doc, 0, sub_help_filter +}; + +/* Structure used to communicate with the parsing functions. */ +struct params +{ + unsigned foonly; /* Value parsed for foonly. */ + unsigned foonly_default; /* Default value for it. */ +}; + +#define OPT_PGRP 1 +#define OPT_SESS 2 + +struct argp_option options[] = +{ + {"pid", 'p', "PID", 0, "List the process PID"}, + {"pgrp", OPT_PGRP,"PGRP",0, "List processes in the process group PGRP"}, + {"no-parent", 'P', 0, 0, "Include processes without parents"}, + {0, 'x', 0, OPTION_ALIAS}, + {"all-fields",'Q', 0, 0, "Don't elide unusable fields (normally" + " if there's some reason ps can't" + " print a field for any process, it's" + " removed from the output entirely)" }, + {"reverse", 'r', 0, 0, "Reverse the order of any sort"}, + {"gratuitously-long-reverse-option", 0, 0, OPTION_ALIAS}, + {"session", OPT_SESS,"SID", OPTION_ARG_OPTIONAL, + "Add the processes from the session" + " SID (which defaults to the sid of" + " the current process)" }, + + {0,0,0,0, "Here are some more options:"}, + {"foonly", 'f', "ZOT", OPTION_ARG_OPTIONAL, "Glork a foonly"}, + {"zaza", 'z', 0, 0, "Snit a zar"}, + + {0} +}; + +static const char args_doc[] = "STRING"; +static const char doc[] = "Test program for argp." + "\vThis doc string comes after the options." + "\nHey! Some manual formatting!" + "\nThe current time is: %s"; + +static void +popt (int key, char *arg) +{ + char buf[10]; + if (isprint (key)) + sprintf (buf, "%c", key); + else + sprintf (buf, "%d", key); + if (arg) + printf ("KEY %s: %s\n", buf, arg); + else + printf ("KEY %s\n", buf); +} + +static error_t +parse_opt (int key, char *arg, struct argp_state *state) +{ + struct params *params = state->input; + + switch (key) + { + case ARGP_KEY_NO_ARGS: + printf ("NO ARGS\n"); + break; + + case ARGP_KEY_ARG: + if (state->arg_num > 0) + return ARGP_ERR_UNKNOWN; /* Leave it for the sub-arg parser. */ + printf ("ARG: %s\n", arg); + break; + + case 'f': + if (arg) + params->foonly = atoi (arg); + else + params->foonly = params->foonly_default; + popt (key, arg); + break; + + case 'p': case 'P': case OPT_PGRP: case 'x': case 'Q': + case 'r': case OPT_SESS: case 'z': + popt (key, arg); + break; + + default: + return ARGP_ERR_UNKNOWN; + } + return 0; +} + +static char * +help_filter (int key, const char *text, void *input) +{ + char *new_text; + struct params *params = input; + + if (key == ARGP_KEY_HELP_POST_DOC && text) + { + time_t now = time (0); + asprintf (&new_text, text, ctime (&now)); + } + else if (key == 'f') + /* Show the default for the --foonly option. */ + asprintf (&new_text, "%s (ZOT defaults to %x)", + text, params->foonly_default); + else + new_text = (char *)text; + + return new_text; +} + +static struct argp_child argp_children[] = { { &sub_argp }, { 0 } }; +static struct argp argp = { + options, parse_opt, args_doc, doc, argp_children, help_filter +}; + +int +main (int argc, char **argv) +{ + struct params params; + params.foonly = 0; + params.foonly_default = random (); + argp_parse (&argp, argc, argv, 0, 0, ¶ms); + printf ("After parsing: foonly = %x\n", params.foonly); + return 0; +} |