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272
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1 /* Hierarchial argument parsing help output
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2 Copyright (C) 1995-2005, 2007 Free Software Foundation, Inc.
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3 This file is part of the GNU C Library.
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4 Written by Miles Bader <miles@gnu.ai.mit.edu>.
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5
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6 This program is free software: you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 3 of the License, or
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9 (at your option) any later version.
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10
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11 This program is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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18
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19 #ifndef _GNU_SOURCE
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20 # define _GNU_SOURCE 1
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21 #endif
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22
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23 #ifdef HAVE_CONFIG_H
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24 # include <config.h>
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25 #endif
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26
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27 #include <alloca.h>
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28 #include <errno.h>
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29 #include <stddef.h>
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30 #include <stdlib.h>
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31 #include <string.h>
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32 #include <assert.h>
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33 #include <stdarg.h>
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34 #include <ctype.h>
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35 #include <limits.h>
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36 #ifdef USE_IN_LIBIO
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37 # include <wchar.h>
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38 #endif
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39
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40 #ifdef _LIBC
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41 # include <libintl.h>
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42 # undef dgettext
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43 # define dgettext(domain, msgid) \
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44 INTUSE(__dcgettext) (domain, msgid, LC_MESSAGES)
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45 #else
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46 # include "gettext.h"
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47 #endif
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48
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49 #include "argp.h"
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50 #include "argp-fmtstream.h"
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51 #include "argp-namefrob.h"
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52
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53 #ifndef SIZE_MAX
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54 # define SIZE_MAX ((size_t) -1)
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55 #endif
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56
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57 /* User-selectable (using an environment variable) formatting parameters.
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58
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59 These may be specified in an environment variable called `ARGP_HELP_FMT',
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60 with a contents like: VAR1=VAL1,VAR2=VAL2,BOOLVAR2,no-BOOLVAR2
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61 Where VALn must be a positive integer. The list of variables is in the
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62 UPARAM_NAMES vector, below. */
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63
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64 /* Default parameters. */
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65 #define DUP_ARGS 0 /* True if option argument can be duplicated. */
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66 #define DUP_ARGS_NOTE 1 /* True to print a note about duplicate args. */
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67 #define SHORT_OPT_COL 2 /* column in which short options start */
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68 #define LONG_OPT_COL 6 /* column in which long options start */
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69 #define DOC_OPT_COL 2 /* column in which doc options start */
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70 #define OPT_DOC_COL 29 /* column in which option text starts */
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71 #define HEADER_COL 1 /* column in which group headers are printed */
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72 #define USAGE_INDENT 12 /* indentation of wrapped usage lines */
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73 #define RMARGIN 79 /* right margin used for wrapping */
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74
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75 /* User-selectable (using an environment variable) formatting parameters.
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76 They must all be of type `int' for the parsing code to work. */
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77 struct uparams
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78 {
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79 /* If true, arguments for an option are shown with both short and long
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80 options, even when a given option has both, e.g. `-x ARG, --longx=ARG'.
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81 If false, then if an option has both, the argument is only shown with
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82 the long one, e.g., `-x, --longx=ARG', and a message indicating that
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83 this really means both is printed below the options. */
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84 int dup_args;
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85
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86 /* This is true if when DUP_ARGS is false, and some duplicate arguments have
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87 been suppressed, an explanatory message should be printed. */
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88 int dup_args_note;
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89
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90 /* Various output columns. */
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91 int short_opt_col; /* column in which short options start */
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92 int long_opt_col; /* column in which long options start */
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93 int doc_opt_col; /* column in which doc options start */
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94 int opt_doc_col; /* column in which option text starts */
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95 int header_col; /* column in which group headers are printed */
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96 int usage_indent; /* indentation of wrapped usage lines */
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97 int rmargin; /* right margin used for wrapping */
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98
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99 int valid; /* True when the values in here are valid. */
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100 };
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101
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102 /* This is a global variable, as user options are only ever read once. */
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103 static struct uparams uparams = {
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104 DUP_ARGS, DUP_ARGS_NOTE,
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105 SHORT_OPT_COL, LONG_OPT_COL, DOC_OPT_COL, OPT_DOC_COL, HEADER_COL,
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106 USAGE_INDENT, RMARGIN,
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107 0
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108 };
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109
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110 /* A particular uparam, and what the user name is. */
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111 struct uparam_name
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112 {
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113 const char *name; /* User name. */
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114 int is_bool; /* Whether it's `boolean'. */
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115 size_t uparams_offs; /* Location of the (int) field in UPARAMS. */
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116 };
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117
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118 /* The name-field mappings we know about. */
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119 static const struct uparam_name uparam_names[] =
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120 {
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121 { "dup-args", 1, offsetof (struct uparams, dup_args) },
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122 { "dup-args-note", 1, offsetof (struct uparams, dup_args_note) },
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123 { "short-opt-col", 0, offsetof (struct uparams, short_opt_col) },
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124 { "long-opt-col", 0, offsetof (struct uparams, long_opt_col) },
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125 { "doc-opt-col", 0, offsetof (struct uparams, doc_opt_col) },
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126 { "opt-doc-col", 0, offsetof (struct uparams, opt_doc_col) },
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127 { "header-col", 0, offsetof (struct uparams, header_col) },
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128 { "usage-indent", 0, offsetof (struct uparams, usage_indent) },
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129 { "rmargin", 0, offsetof (struct uparams, rmargin) },
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130 { 0 }
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131 };
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132
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133 static void
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134 validate_uparams (const struct argp_state *state, struct uparams *upptr)
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135 {
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136 const struct uparam_name *up;
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137
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138 for (up = uparam_names; up->name; up++)
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139 {
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140 if (up->is_bool
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141 || up->uparams_offs == offsetof (struct uparams, rmargin))
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142 continue;
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143 if (*(int *)((char *)upptr + up->uparams_offs) >= upptr->rmargin)
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144 {
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145 __argp_failure (state, 0, 0,
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146 dgettext (state->root_argp->argp_domain,
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147 "\
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148 ARGP_HELP_FMT: %s value is less than or equal to %s"),
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149 "rmargin", up->name);
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150 return;
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151 }
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152 }
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153 uparams = *upptr;
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154 uparams.valid = 1;
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155 }
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156
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157 /* Read user options from the environment, and fill in UPARAMS appropiately. */
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158 static void
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159 fill_in_uparams (const struct argp_state *state)
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160 {
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161 const char *var = getenv ("ARGP_HELP_FMT");
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162 struct uparams new_params = uparams;
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163
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164 #define SKIPWS(p) do { while (isspace ((unsigned char) *p)) p++; } while (0);
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165
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166 if (var)
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167 {
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168 /* Parse var. */
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169 while (*var)
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170 {
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171 SKIPWS (var);
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172
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173 if (isalpha ((unsigned char) *var))
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174 {
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175 size_t var_len;
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176 const struct uparam_name *un;
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177 int unspec = 0, val = 0;
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178 const char *arg = var;
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179
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180 while (isalnum ((unsigned char) *arg) || *arg == '-' || *arg == '_')
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181 arg++;
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182 var_len = arg - var;
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183
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184 SKIPWS (arg);
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185
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186 if (*arg == '\0' || *arg == ',')
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187 unspec = 1;
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188 else if (*arg == '=')
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189 {
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190 arg++;
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191 SKIPWS (arg);
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192 }
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193
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194 if (unspec)
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195 {
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196 if (var[0] == 'n' && var[1] == 'o' && var[2] == '-')
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197 {
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198 val = 0;
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199 var += 3;
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200 var_len -= 3;
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201 }
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202 else
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203 val = 1;
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204 }
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205 else if (isdigit ((unsigned char) *arg))
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206 {
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207 val = atoi (arg);
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208 while (isdigit ((unsigned char) *arg))
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209 arg++;
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210 SKIPWS (arg);
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211 }
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212
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213 for (un = uparam_names; un->name; un++)
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214 if (strlen (un->name) == var_len
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215 && strncmp (var, un->name, var_len) == 0)
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216 {
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217 if (unspec && !un->is_bool)
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218 __argp_failure (state, 0, 0,
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219 dgettext (state->root_argp->argp_domain,
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220 "\
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221 %.*s: ARGP_HELP_FMT parameter requires a value"),
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222 (int) var_len, var);
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223 else if (val < 0)
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224 __argp_failure (state, 0, 0,
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225 dgettext (state->root_argp->argp_domain,
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226 "\
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227 %.*s: ARGP_HELP_FMT parameter must be positive"),
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228 (int) var_len, var);
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229 else
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230 *(int *)((char *)&new_params + un->uparams_offs) = val;
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231 break;
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232 }
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233 if (! un->name)
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234 __argp_failure (state, 0, 0,
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235 dgettext (state->root_argp->argp_domain, "\
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236 %.*s: Unknown ARGP_HELP_FMT parameter"),
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237 (int) var_len, var);
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238
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239 var = arg;
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240 if (*var == ',')
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241 var++;
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242 }
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243 else if (*var)
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244 {
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245 __argp_failure (state, 0, 0,
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246 dgettext (state->root_argp->argp_domain,
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247 "Garbage in ARGP_HELP_FMT: %s"), var);
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248 break;
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249 }
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250 }
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251 validate_uparams (state, &new_params);
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252 }
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253 }
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254
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255 /* Returns true if OPT hasn't been marked invisible. Visibility only affects
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256 whether OPT is displayed or used in sorting, not option shadowing. */
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257 #define ovisible(opt) (! ((opt)->flags & OPTION_HIDDEN))
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258
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259 /* Returns true if OPT is an alias for an earlier option. */
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260 #define oalias(opt) ((opt)->flags & OPTION_ALIAS)
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261
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262 /* Returns true if OPT is an documentation-only entry. */
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263 #define odoc(opt) ((opt)->flags & OPTION_DOC)
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264
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265 /* Returns true if OPT should not be translated */
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266 #define onotrans(opt) ((opt)->flags & OPTION_NO_TRANS)
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267
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268 /* Returns true if OPT is the end-of-list marker for a list of options. */
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269 #define oend(opt) __option_is_end (opt)
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270
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271 /* Returns true if OPT has a short option. */
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272 #define oshort(opt) __option_is_short (opt)
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273
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274 /*
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275 The help format for a particular option is like:
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276
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277 -xARG, -yARG, --long1=ARG, --long2=ARG Documentation...
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278
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279 Where ARG will be omitted if there's no argument, for this option, or
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280 will be surrounded by "[" and "]" appropiately if the argument is
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281 optional. The documentation string is word-wrapped appropiately, and if
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282 the list of options is long enough, it will be started on a separate line.
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283 If there are no short options for a given option, the first long option is
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284 indented slighly in a way that's supposed to make most long options appear
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285 to be in a separate column.
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286
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287 For example, the following output (from ps):
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288
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289 -p PID, --pid=PID List the process PID
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290 --pgrp=PGRP List processes in the process group PGRP
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291 -P, -x, --no-parent Include processes without parents
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292 -Q, --all-fields Don't elide unusable fields (normally if there's
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293 some reason ps can't print a field for any
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294 process, it's removed from the output entirely)
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295 -r, --reverse, --gratuitously-long-reverse-option
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296 Reverse the order of any sort
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297 --session[=SID] Add the processes from the session SID (which
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298 defaults to the sid of the current process)
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299
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300 Here are some more options:
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301 -f ZOT, --foonly=ZOT Glork a foonly
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302 -z, --zaza Snit a zar
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303
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304 -?, --help Give this help list
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305 --usage Give a short usage message
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306 -V, --version Print program version
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307
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308 The struct argp_option array for the above could look like:
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309
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310 {
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311 {"pid", 'p', "PID", 0, "List the process PID"},
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312 {"pgrp", OPT_PGRP, "PGRP", 0, "List processes in the process group PGRP"},
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313 {"no-parent", 'P', 0, 0, "Include processes without parents"},
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314 {0, 'x', 0, OPTION_ALIAS},
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315 {"all-fields",'Q', 0, 0, "Don't elide unusable fields (normally"
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316 " if there's some reason ps can't"
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317 " print a field for any process, it's"
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318 " removed from the output entirely)" },
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319 {"reverse", 'r', 0, 0, "Reverse the order of any sort"},
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320 {"gratuitously-long-reverse-option", 0, 0, OPTION_ALIAS},
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321 {"session", OPT_SESS, "SID", OPTION_ARG_OPTIONAL,
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322 "Add the processes from the session"
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323 " SID (which defaults to the sid of"
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324 " the current process)" },
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325
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326 {0,0,0,0, "Here are some more options:"},
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327 {"foonly", 'f', "ZOT", 0, "Glork a foonly"},
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328 {"zaza", 'z', 0, 0, "Snit a zar"},
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329
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330 {0}
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331 }
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332
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333 Note that the last three options are automatically supplied by argp_parse,
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334 unless you tell it not to with ARGP_NO_HELP.
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335
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336 */
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337
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338 /* Returns true if CH occurs between BEG and END. */
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339 static int
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340 find_char (char ch, char *beg, char *end)
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341 {
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342 while (beg < end)
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343 if (*beg == ch)
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344 return 1;
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345 else
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346 beg++;
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347 return 0;
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348 }
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349
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350 struct hol_cluster; /* fwd decl */
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351
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352 struct hol_entry
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353 {
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354 /* First option. */
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355 const struct argp_option *opt;
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356 /* Number of options (including aliases). */
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357 unsigned num;
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358
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359 /* A pointers into the HOL's short_options field, to the first short option
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360 letter for this entry. The order of the characters following this point
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361 corresponds to the order of options pointed to by OPT, and there are at
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362 most NUM. A short option recorded in a option following OPT is only
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363 valid if it occurs in the right place in SHORT_OPTIONS (otherwise it's
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364 probably been shadowed by some other entry). */
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365 char *short_options;
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366
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367 /* Entries are sorted by their group first, in the order:
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368 1, 2, ..., n, 0, -m, ..., -2, -1
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369 and then alphabetically within each group. The default is 0. */
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370 int group;
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371
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372 /* The cluster of options this entry belongs to, or 0 if none. */
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373 struct hol_cluster *cluster;
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374
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375 /* The argp from which this option came. */
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376 const struct argp *argp;
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377
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378 /* Position in the array */
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379 unsigned ord;
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380 };
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381
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382 /* A cluster of entries to reflect the argp tree structure. */
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383 struct hol_cluster
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384 {
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385 /* A descriptive header printed before options in this cluster. */
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386 const char *header;
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387
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388 /* Used to order clusters within the same group with the same parent,
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389 according to the order in which they occurred in the parent argp's child
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390 list. */
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391 int index;
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392
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393 /* How to sort this cluster with respect to options and other clusters at the
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394 same depth (clusters always follow options in the same group). */
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395 int group;
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396
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|
|
397 /* The cluster to which this cluster belongs, or 0 if it's at the base
|
|
|
398 level. */
|
|
|
399 struct hol_cluster *parent;
|
|
|
400
|
|
|
401 /* The argp from which this cluster is (eventually) derived. */
|
|
|
402 const struct argp *argp;
|
|
|
403
|
|
|
404 /* The distance this cluster is from the root. */
|
|
|
405 int depth;
|
|
|
406
|
|
|
407 /* Clusters in a given hol are kept in a linked list, to make freeing them
|
|
|
408 possible. */
|
|
|
409 struct hol_cluster *next;
|
|
|
410 };
|
|
|
411
|
|
|
412 /* A list of options for help. */
|
|
|
413 struct hol
|
|
|
414 {
|
|
|
415 /* An array of hol_entry's. */
|
|
|
416 struct hol_entry *entries;
|
|
|
417 /* The number of entries in this hol. If this field is zero, the others
|
|
|
418 are undefined. */
|
|
|
419 unsigned num_entries;
|
|
|
420
|
|
|
421 /* A string containing all short options in this HOL. Each entry contains
|
|
|
422 pointers into this string, so the order can't be messed with blindly. */
|
|
|
423 char *short_options;
|
|
|
424
|
|
|
425 /* Clusters of entries in this hol. */
|
|
|
426 struct hol_cluster *clusters;
|
|
|
427 };
|
|
|
428
|
|
|
429 /* Create a struct hol from the options in ARGP. CLUSTER is the
|
|
|
430 hol_cluster in which these entries occur, or 0, if at the root. */
|
|
|
431 static struct hol *
|
|
|
432 make_hol (const struct argp *argp, struct hol_cluster *cluster)
|
|
|
433 {
|
|
|
434 char *so;
|
|
|
435 const struct argp_option *o;
|
|
|
436 const struct argp_option *opts = argp->options;
|
|
|
437 struct hol_entry *entry;
|
|
|
438 unsigned num_short_options = 0;
|
|
|
439 struct hol *hol = malloc (sizeof (struct hol));
|
|
|
440
|
|
|
441 assert (hol);
|
|
|
442
|
|
|
443 hol->num_entries = 0;
|
|
|
444 hol->clusters = 0;
|
|
|
445
|
|
|
446 if (opts)
|
|
|
447 {
|
|
|
448 int cur_group = 0;
|
|
|
449
|
|
|
450 /* The first option must not be an alias. */
|
|
|
451 assert (! oalias (opts));
|
|
|
452
|
|
|
453 /* Calculate the space needed. */
|
|
|
454 for (o = opts; ! oend (o); o++)
|
|
|
455 {
|
|
|
456 if (! oalias (o))
|
|
|
457 hol->num_entries++;
|
|
|
458 if (oshort (o))
|
|
|
459 num_short_options++; /* This is an upper bound. */
|
|
|
460 }
|
|
|
461
|
|
|
462 hol->entries = malloc (sizeof (struct hol_entry) * hol->num_entries);
|
|
|
463 hol->short_options = malloc (num_short_options + 1);
|
|
|
464
|
|
|
465 assert (hol->entries && hol->short_options);
|
|
|
466 if (SIZE_MAX <= UINT_MAX)
|
|
|
467 assert (hol->num_entries <= SIZE_MAX / sizeof (struct hol_entry));
|
|
|
468
|
|
|
469 /* Fill in the entries. */
|
|
|
470 so = hol->short_options;
|
|
|
471 for (o = opts, entry = hol->entries; ! oend (o); entry++)
|
|
|
472 {
|
|
|
473 entry->opt = o;
|
|
|
474 entry->num = 0;
|
|
|
475 entry->short_options = so;
|
|
|
476 entry->group = cur_group =
|
|
|
477 o->group
|
|
|
478 ? o->group
|
|
|
479 : ((!o->name && !o->key)
|
|
|
480 ? cur_group + 1
|
|
|
481 : cur_group);
|
|
|
482 entry->cluster = cluster;
|
|
|
483 entry->argp = argp;
|
|
|
484
|
|
|
485 do
|
|
|
486 {
|
|
|
487 entry->num++;
|
|
|
488 if (oshort (o) && ! find_char (o->key, hol->short_options, so))
|
|
|
489 /* O has a valid short option which hasn't already been used.*/
|
|
|
490 *so++ = o->key;
|
|
|
491 o++;
|
|
|
492 }
|
|
|
493 while (! oend (o) && oalias (o));
|
|
|
494 }
|
|
|
495 *so = '\0'; /* null terminated so we can find the length */
|
|
|
496 }
|
|
|
497
|
|
|
498 return hol;
|
|
|
499 }
|
|
|
500
|
|
|
501 /* Add a new cluster to HOL, with the given GROUP and HEADER (taken from the
|
|
|
502 associated argp child list entry), INDEX, and PARENT, and return a pointer
|
|
|
503 to it. ARGP is the argp that this cluster results from. */
|
|
|
504 static struct hol_cluster *
|
|
|
505 hol_add_cluster (struct hol *hol, int group, const char *header, int index,
|
|
|
506 struct hol_cluster *parent, const struct argp *argp)
|
|
|
507 {
|
|
|
508 struct hol_cluster *cl = malloc (sizeof (struct hol_cluster));
|
|
|
509 if (cl)
|
|
|
510 {
|
|
|
511 cl->group = group;
|
|
|
512 cl->header = header;
|
|
|
513
|
|
|
514 cl->index = index;
|
|
|
515 cl->parent = parent;
|
|
|
516 cl->argp = argp;
|
|
|
517 cl->depth = parent ? parent->depth + 1 : 0;
|
|
|
518
|
|
|
519 cl->next = hol->clusters;
|
|
|
520 hol->clusters = cl;
|
|
|
521 }
|
|
|
522 return cl;
|
|
|
523 }
|
|
|
524
|
|
|
525 /* Free HOL and any resources it uses. */
|
|
|
526 static void
|
|
|
527 hol_free (struct hol *hol)
|
|
|
528 {
|
|
|
529 struct hol_cluster *cl = hol->clusters;
|
|
|
530
|
|
|
531 while (cl)
|
|
|
532 {
|
|
|
533 struct hol_cluster *next = cl->next;
|
|
|
534 free (cl);
|
|
|
535 cl = next;
|
|
|
536 }
|
|
|
537
|
|
|
538 if (hol->num_entries > 0)
|
|
|
539 {
|
|
|
540 free (hol->entries);
|
|
|
541 free (hol->short_options);
|
|
|
542 }
|
|
|
543
|
|
|
544 free (hol);
|
|
|
545 }
|
|
|
546
|
|
|
547 static int
|
|
|
548 hol_entry_short_iterate (const struct hol_entry *entry,
|
|
|
549 int (*func)(const struct argp_option *opt,
|
|
|
550 const struct argp_option *real,
|
|
|
551 const char *domain, void *cookie),
|
|
|
552 const char *domain, void *cookie)
|
|
|
553 {
|
|
|
554 unsigned nopts;
|
|
|
555 int val = 0;
|
|
|
556 const struct argp_option *opt, *real = entry->opt;
|
|
|
557 char *so = entry->short_options;
|
|
|
558
|
|
|
559 for (opt = real, nopts = entry->num; nopts > 0 && !val; opt++, nopts--)
|
|
|
560 if (oshort (opt) && *so == opt->key)
|
|
|
561 {
|
|
|
562 if (!oalias (opt))
|
|
|
563 real = opt;
|
|
|
564 if (ovisible (opt))
|
|
|
565 val = (*func)(opt, real, domain, cookie);
|
|
|
566 so++;
|
|
|
567 }
|
|
|
568
|
|
|
569 return val;
|
|
|
570 }
|
|
|
571
|
|
|
572 static inline int
|
|
|
573 __attribute__ ((always_inline))
|
|
|
574 hol_entry_long_iterate (const struct hol_entry *entry,
|
|
|
575 int (*func)(const struct argp_option *opt,
|
|
|
576 const struct argp_option *real,
|
|
|
577 const char *domain, void *cookie),
|
|
|
578 const char *domain, void *cookie)
|
|
|
579 {
|
|
|
580 unsigned nopts;
|
|
|
581 int val = 0;
|
|
|
582 const struct argp_option *opt, *real = entry->opt;
|
|
|
583
|
|
|
584 for (opt = real, nopts = entry->num; nopts > 0 && !val; opt++, nopts--)
|
|
|
585 if (opt->name)
|
|
|
586 {
|
|
|
587 if (!oalias (opt))
|
|
|
588 real = opt;
|
|
|
589 if (ovisible (opt))
|
|
|
590 val = (*func)(opt, real, domain, cookie);
|
|
|
591 }
|
|
|
592
|
|
|
593 return val;
|
|
|
594 }
|
|
|
595
|
|
|
596 /* Iterator that returns true for the first short option. */
|
|
|
597 static int
|
|
|
598 until_short (const struct argp_option *opt, const struct argp_option *real,
|
|
|
599 const char *domain, void *cookie)
|
|
|
600 {
|
|
|
601 return oshort (opt) ? opt->key : 0;
|
|
|
602 }
|
|
|
603
|
|
|
604 /* Returns the first valid short option in ENTRY, or 0 if there is none. */
|
|
|
605 static char
|
|
|
606 hol_entry_first_short (const struct hol_entry *entry)
|
|
|
607 {
|
|
|
608 return hol_entry_short_iterate (entry, until_short,
|
|
|
609 entry->argp->argp_domain, 0);
|
|
|
610 }
|
|
|
611
|
|
|
612 /* Returns the first valid long option in ENTRY, or 0 if there is none. */
|
|
|
613 static const char *
|
|
|
614 hol_entry_first_long (const struct hol_entry *entry)
|
|
|
615 {
|
|
|
616 const struct argp_option *opt;
|
|
|
617 unsigned num;
|
|
|
618 for (opt = entry->opt, num = entry->num; num > 0; opt++, num--)
|
|
|
619 if (opt->name && ovisible (opt))
|
|
|
620 return opt->name;
|
|
|
621 return 0;
|
|
|
622 }
|
|
|
623
|
|
|
624 /* Returns the entry in HOL with the long option name NAME, or 0 if there is
|
|
|
625 none. */
|
|
|
626 static struct hol_entry *
|
|
|
627 hol_find_entry (struct hol *hol, const char *name)
|
|
|
628 {
|
|
|
629 struct hol_entry *entry = hol->entries;
|
|
|
630 unsigned num_entries = hol->num_entries;
|
|
|
631
|
|
|
632 while (num_entries-- > 0)
|
|
|
633 {
|
|
|
634 const struct argp_option *opt = entry->opt;
|
|
|
635 unsigned num_opts = entry->num;
|
|
|
636
|
|
|
637 while (num_opts-- > 0)
|
|
|
638 if (opt->name && ovisible (opt) && strcmp (opt->name, name) == 0)
|
|
|
639 return entry;
|
|
|
640 else
|
|
|
641 opt++;
|
|
|
642
|
|
|
643 entry++;
|
|
|
644 }
|
|
|
645
|
|
|
646 return 0;
|
|
|
647 }
|
|
|
648
|
|
|
649 /* If an entry with the long option NAME occurs in HOL, set it's special
|
|
|
650 sort position to GROUP. */
|
|
|
651 static void
|
|
|
652 hol_set_group (struct hol *hol, const char *name, int group)
|
|
|
653 {
|
|
|
654 struct hol_entry *entry = hol_find_entry (hol, name);
|
|
|
655 if (entry)
|
|
|
656 entry->group = group;
|
|
|
657 }
|
|
|
658
|
|
|
659 /* Order by group: 0, 1, 2, ..., n, -m, ..., -2, -1.
|
|
|
660 EQ is what to return if GROUP1 and GROUP2 are the same. */
|
|
|
661 static int
|
|
|
662 group_cmp (int group1, int group2, int eq)
|
|
|
663 {
|
|
|
664 if (group1 == group2)
|
|
|
665 return eq;
|
|
|
666 else if ((group1 < 0 && group2 < 0) || (group1 >= 0 && group2 >= 0))
|
|
|
667 return group1 - group2;
|
|
|
668 else
|
|
|
669 return group2 - group1;
|
|
|
670 }
|
|
|
671
|
|
|
672 /* Compare clusters CL1 & CL2 by the order that they should appear in
|
|
|
673 output. */
|
|
|
674 static int
|
|
|
675 hol_cluster_cmp (const struct hol_cluster *cl1, const struct hol_cluster *cl2)
|
|
|
676 {
|
|
|
677 /* If one cluster is deeper than the other, use its ancestor at the same
|
|
|
678 level, so that finding the common ancestor is straightforward.
|
|
|
679
|
|
|
680 clN->depth > 0 means that clN->parent != NULL (see hol_add_cluster) */
|
|
|
681 while (cl1->depth > cl2->depth)
|
|
|
682 cl1 = cl1->parent;
|
|
|
683 while (cl2->depth > cl1->depth)
|
|
|
684 cl2 = cl2->parent;
|
|
|
685
|
|
|
686 /* Now reduce both clusters to their ancestors at the point where both have
|
|
|
687 a common parent; these can be directly compared. */
|
|
|
688 while (cl1->parent != cl2->parent)
|
|
|
689 cl1 = cl1->parent, cl2 = cl2->parent;
|
|
|
690
|
|
|
691 return group_cmp (cl1->group, cl2->group, cl2->index - cl1->index);
|
|
|
692 }
|
|
|
693
|
|
|
694 /* Return the ancestor of CL that's just below the root (i.e., has a parent
|
|
|
695 of 0). */
|
|
|
696 static struct hol_cluster *
|
|
|
697 hol_cluster_base (struct hol_cluster *cl)
|
|
|
698 {
|
|
|
699 while (cl->parent)
|
|
|
700 cl = cl->parent;
|
|
|
701 return cl;
|
|
|
702 }
|
|
|
703
|
|
|
704 /* Return true if CL1 is a child of CL2. */
|
|
|
705 static int
|
|
|
706 hol_cluster_is_child (const struct hol_cluster *cl1,
|
|
|
707 const struct hol_cluster *cl2)
|
|
|
708 {
|
|
|
709 while (cl1 && cl1 != cl2)
|
|
|
710 cl1 = cl1->parent;
|
|
|
711 return cl1 == cl2;
|
|
|
712 }
|
|
|
713
|
|
|
714 /* Given the name of a OPTION_DOC option, modifies NAME to start at the tail
|
|
|
715 that should be used for comparisons, and returns true iff it should be
|
|
|
716 treated as a non-option. */
|
|
|
717 static int
|
|
|
718 canon_doc_option (const char **name)
|
|
|
719 {
|
|
|
720 int non_opt;
|
|
|
721
|
|
|
722 if (!*name)
|
|
|
723 non_opt = 1;
|
|
|
724 else
|
|
|
725 {
|
|
|
726 /* Skip initial whitespace. */
|
|
|
727 while (isspace ((unsigned char) **name))
|
|
|
728 (*name)++;
|
|
|
729 /* Decide whether this looks like an option (leading `-') or not. */
|
|
|
730 non_opt = (**name != '-');
|
|
|
731 /* Skip until part of name used for sorting. */
|
|
|
732 while (**name && !isalnum ((unsigned char) **name))
|
|
|
733 (*name)++;
|
|
|
734 }
|
|
|
735 return non_opt;
|
|
|
736 }
|
|
|
737
|
|
|
738 #define HOL_ENTRY_PTRCMP(a,b) ((a)->ord < (b)->ord ? -1 : 1)
|
|
|
739
|
|
|
740 /* Order ENTRY1 & ENTRY2 by the order which they should appear in a help
|
|
|
741 listing. */
|
|
|
742 static int
|
|
|
743 hol_entry_cmp (const struct hol_entry *entry1,
|
|
|
744 const struct hol_entry *entry2)
|
|
|
745 {
|
|
|
746 /* The group numbers by which the entries should be ordered; if either is
|
|
|
747 in a cluster, then this is just the group within the cluster. */
|
|
|
748 int group1 = entry1->group, group2 = entry2->group;
|
|
|
749 int rc;
|
|
|
750
|
|
|
751 if (entry1->cluster != entry2->cluster)
|
|
|
752 {
|
|
|
753 /* The entries are not within the same cluster, so we can't compare them
|
|
|
754 directly, we have to use the appropiate clustering level too. */
|
|
|
755 if (! entry1->cluster)
|
|
|
756 /* ENTRY1 is at the `base level', not in a cluster, so we have to
|
|
|
757 compare it's group number with that of the base cluster in which
|
|
|
758 ENTRY2 resides. Note that if they're in the same group, the
|
|
|
759 clustered option always comes laster. */
|
|
|
760 return group_cmp (group1, hol_cluster_base (entry2->cluster)->group, -1);
|
|
|
761 else if (! entry2->cluster)
|
|
|
762 /* Likewise, but ENTRY2's not in a cluster. */
|
|
|
763 return group_cmp (hol_cluster_base (entry1->cluster)->group, group2, 1);
|
|
|
764 else
|
|
|
765 /* Both entries are in clusters, we can just compare the clusters. */
|
|
|
766 return (rc = hol_cluster_cmp (entry1->cluster, entry2->cluster)) ?
|
|
|
767 rc : HOL_ENTRY_PTRCMP(entry1, entry2);
|
|
|
768 }
|
|
|
769 else if (group1 == group2)
|
|
|
770 /* The entries are both in the same cluster and group, so compare them
|
|
|
771 alphabetically. */
|
|
|
772 {
|
|
|
773 int short1 = hol_entry_first_short (entry1);
|
|
|
774 int short2 = hol_entry_first_short (entry2);
|
|
|
775 int doc1 = odoc (entry1->opt);
|
|
|
776 int doc2 = odoc (entry2->opt);
|
|
|
777 const char *long1 = hol_entry_first_long (entry1);
|
|
|
778 const char *long2 = hol_entry_first_long (entry2);
|
|
|
779
|
|
|
780 if (doc1)
|
|
|
781 doc1 = canon_doc_option (&long1);
|
|
|
782 if (doc2)
|
|
|
783 doc2 = canon_doc_option (&long2);
|
|
|
784
|
|
|
785 if (doc1 != doc2)
|
|
|
786 /* `documentation' options always follow normal options (or
|
|
|
787 documentation options that *look* like normal options). */
|
|
|
788 return doc1 - doc2;
|
|
|
789 else if (!short1 && !short2 && long1 && long2)
|
|
|
790 /* Only long options. */
|
|
|
791 return (rc = __strcasecmp (long1, long2)) ?
|
|
|
792 rc : HOL_ENTRY_PTRCMP(entry1, entry2);
|
|
|
793 else
|
|
|
794 /* Compare short/short, long/short, short/long, using the first
|
|
|
795 character of long options. Entries without *any* valid
|
|
|
796 options (such as options with OPTION_HIDDEN set) will be put
|
|
|
797 first, but as they're not displayed, it doesn't matter where
|
|
|
798 they are. */
|
|
|
799 {
|
|
|
800 char first1 = short1 ? short1 : long1 ? *long1 : 0;
|
|
|
801 char first2 = short2 ? short2 : long2 ? *long2 : 0;
|
|
|
802 #ifdef _tolower
|
|
|
803 int lower_cmp = _tolower (first1) - _tolower (first2);
|
|
|
804 #else
|
|
|
805 int lower_cmp = tolower (first1) - tolower (first2);
|
|
|
806 #endif
|
|
|
807 /* Compare ignoring case, except when the options are both the
|
|
|
808 same letter, in which case lower-case always comes first. */
|
|
|
809 return lower_cmp ? lower_cmp :
|
|
|
810 (rc = first2 - first1) ?
|
|
|
811 rc : HOL_ENTRY_PTRCMP(entry1, entry2);
|
|
|
812 }
|
|
|
813 }
|
|
|
814 else
|
|
|
815 /* Within the same cluster, but not the same group, so just compare
|
|
|
816 groups. */
|
|
|
817 return group_cmp (group1, group2, HOL_ENTRY_PTRCMP(entry1, entry2));
|
|
|
818 }
|
|
|
819
|
|
|
820 /* Version of hol_entry_cmp with correct signature for qsort. */
|
|
|
821 static int
|
|
|
822 hol_entry_qcmp (const void *entry1_v, const void *entry2_v)
|
|
|
823 {
|
|
|
824 return hol_entry_cmp (entry1_v, entry2_v);
|
|
|
825 }
|
|
|
826
|
|
|
827 /* Sort HOL by group and alphabetically by option name (with short options
|
|
|
828 taking precedence over long). Since the sorting is for display purposes
|
|
|
829 only, the shadowing of options isn't effected. */
|
|
|
830 static void
|
|
|
831 hol_sort (struct hol *hol)
|
|
|
832 {
|
|
|
833 if (hol->num_entries > 0)
|
|
|
834 {
|
|
|
835 unsigned i;
|
|
|
836 struct hol_entry *e;
|
|
|
837 for (i = 0, e = hol->entries; i < hol->num_entries; i++, e++)
|
|
|
838 e->ord = i;
|
|
|
839 qsort (hol->entries, hol->num_entries, sizeof (struct hol_entry),
|
|
|
840 hol_entry_qcmp);
|
|
|
841 }
|
|
|
842 }
|
|
|
843
|
|
|
844 /* Append MORE to HOL, destroying MORE in the process. Options in HOL shadow
|
|
|
845 any in MORE with the same name. */
|
|
|
846 static void
|
|
|
847 hol_append (struct hol *hol, struct hol *more)
|
|
|
848 {
|
|
|
849 struct hol_cluster **cl_end = &hol->clusters;
|
|
|
850
|
|
|
851 /* Steal MORE's cluster list, and add it to the end of HOL's. */
|
|
|
852 while (*cl_end)
|
|
|
853 cl_end = &(*cl_end)->next;
|
|
|
854 *cl_end = more->clusters;
|
|
|
855 more->clusters = 0;
|
|
|
856
|
|
|
857 /* Merge entries. */
|
|
|
858 if (more->num_entries > 0)
|
|
|
859 {
|
|
|
860 if (hol->num_entries == 0)
|
|
|
861 {
|
|
|
862 hol->num_entries = more->num_entries;
|
|
|
863 hol->entries = more->entries;
|
|
|
864 hol->short_options = more->short_options;
|
|
|
865 more->num_entries = 0; /* Mark MORE's fields as invalid. */
|
|
|
866 }
|
|
|
867 else
|
|
|
868 /* Append the entries in MORE to those in HOL, taking care to only add
|
|
|
869 non-shadowed SHORT_OPTIONS values. */
|
|
|
870 {
|
|
|
871 unsigned left;
|
|
|
872 char *so, *more_so;
|
|
|
873 struct hol_entry *e;
|
|
|
874 unsigned num_entries = hol->num_entries + more->num_entries;
|
|
|
875 struct hol_entry *entries =
|
|
|
876 malloc (num_entries * sizeof (struct hol_entry));
|
|
|
877 unsigned hol_so_len = strlen (hol->short_options);
|
|
|
878 char *short_options =
|
|
|
879 malloc (hol_so_len + strlen (more->short_options) + 1);
|
|
|
880
|
|
|
881 assert (entries && short_options);
|
|
|
882 if (SIZE_MAX <= UINT_MAX)
|
|
|
883 assert (num_entries <= SIZE_MAX / sizeof (struct hol_entry));
|
|
|
884
|
|
|
885 __mempcpy (__mempcpy (entries, hol->entries,
|
|
|
886 hol->num_entries * sizeof (struct hol_entry)),
|
|
|
887 more->entries,
|
|
|
888 more->num_entries * sizeof (struct hol_entry));
|
|
|
889
|
|
|
890 __mempcpy (short_options, hol->short_options, hol_so_len);
|
|
|
891
|
|
|
892 /* Fix up the short options pointers from HOL. */
|
|
|
893 for (e = entries, left = hol->num_entries; left > 0; e++, left--)
|
|
|
894 e->short_options += (short_options - hol->short_options);
|
|
|
895
|
|
|
896 /* Now add the short options from MORE, fixing up its entries
|
|
|
897 too. */
|
|
|
898 so = short_options + hol_so_len;
|
|
|
899 more_so = more->short_options;
|
|
|
900 for (left = more->num_entries; left > 0; e++, left--)
|
|
|
901 {
|
|
|
902 int opts_left;
|
|
|
903 const struct argp_option *opt;
|
|
|
904
|
|
|
905 e->short_options = so;
|
|
|
906
|
|
|
907 for (opts_left = e->num, opt = e->opt; opts_left; opt++, opts_left--)
|
|
|
908 {
|
|
|
909 int ch = *more_so;
|
|
|
910 if (oshort (opt) && ch == opt->key)
|
|
|
911 /* The next short option in MORE_SO, CH, is from OPT. */
|
|
|
912 {
|
|
|
913 if (! find_char (ch, short_options,
|
|
|
914 short_options + hol_so_len))
|
|
|
915 /* The short option CH isn't shadowed by HOL's options,
|
|
|
916 so add it to the sum. */
|
|
|
917 *so++ = ch;
|
|
|
918 more_so++;
|
|
|
919 }
|
|
|
920 }
|
|
|
921 }
|
|
|
922
|
|
|
923 *so = '\0';
|
|
|
924
|
|
|
925 free (hol->entries);
|
|
|
926 free (hol->short_options);
|
|
|
927
|
|
|
928 hol->entries = entries;
|
|
|
929 hol->num_entries = num_entries;
|
|
|
930 hol->short_options = short_options;
|
|
|
931 }
|
|
|
932 }
|
|
|
933
|
|
|
934 hol_free (more);
|
|
|
935 }
|
|
|
936
|
|
|
937 /* Inserts enough spaces to make sure STREAM is at column COL. */
|
|
|
938 static void
|
|
|
939 indent_to (argp_fmtstream_t stream, unsigned col)
|
|
|
940 {
|
|
|
941 int needed = col - __argp_fmtstream_point (stream);
|
|
|
942 while (needed-- > 0)
|
|
|
943 __argp_fmtstream_putc (stream, ' ');
|
|
|
944 }
|
|
|
945
|
|
|
946 /* Output to STREAM either a space, or a newline if there isn't room for at
|
|
|
947 least ENSURE characters before the right margin. */
|
|
|
948 static void
|
|
|
949 space (argp_fmtstream_t stream, size_t ensure)
|
|
|
950 {
|
|
|
951 if (__argp_fmtstream_point (stream) + ensure
|
|
|
952 >= __argp_fmtstream_rmargin (stream))
|
|
|
953 __argp_fmtstream_putc (stream, '\n');
|
|
|
954 else
|
|
|
955 __argp_fmtstream_putc (stream, ' ');
|
|
|
956 }
|
|
|
957
|
|
|
958 /* If the option REAL has an argument, we print it in using the printf
|
|
|
959 format REQ_FMT or OPT_FMT depending on whether it's a required or
|
|
|
960 optional argument. */
|
|
|
961 static void
|
|
|
962 arg (const struct argp_option *real, const char *req_fmt, const char *opt_fmt,
|
|
|
963 const char *domain, argp_fmtstream_t stream)
|
|
|
964 {
|
|
|
965 if (real->arg)
|
|
|
966 {
|
|
|
967 if (real->flags & OPTION_ARG_OPTIONAL)
|
|
|
968 __argp_fmtstream_printf (stream, opt_fmt,
|
|
|
969 dgettext (domain, real->arg));
|
|
|
970 else
|
|
|
971 __argp_fmtstream_printf (stream, req_fmt,
|
|
|
972 dgettext (domain, real->arg));
|
|
|
973 }
|
|
|
974 }
|
|
|
975
|
|
|
976 /* Helper functions for hol_entry_help. */
|
|
|
977
|
|
|
978 /* State used during the execution of hol_help. */
|
|
|
979 struct hol_help_state
|
|
|
980 {
|
|
|
981 /* PREV_ENTRY should contain the previous entry printed, or 0. */
|
|
|
982 struct hol_entry *prev_entry;
|
|
|
983
|
|
|
984 /* If an entry is in a different group from the previous one, and SEP_GROUPS
|
|
|
985 is true, then a blank line will be printed before any output. */
|
|
|
986 int sep_groups;
|
|
|
987
|
|
|
988 /* True if a duplicate option argument was suppressed (only ever set if
|
|
|
989 UPARAMS.dup_args is false). */
|
|
|
990 int suppressed_dup_arg;
|
|
|
991 };
|
|
|
992
|
|
|
993 /* Some state used while printing a help entry (used to communicate with
|
|
|
994 helper functions). See the doc for hol_entry_help for more info, as most
|
|
|
995 of the fields are copied from its arguments. */
|
|
|
996 struct pentry_state
|
|
|
997 {
|
|
|
998 const struct hol_entry *entry;
|
|
|
999 argp_fmtstream_t stream;
|
|
|
1000 struct hol_help_state *hhstate;
|
|
|
1001
|
|
|
1002 /* True if nothing's been printed so far. */
|
|
|
1003 int first;
|
|
|
1004
|
|
|
1005 /* If non-zero, the state that was used to print this help. */
|
|
|
1006 const struct argp_state *state;
|
|
|
1007 };
|
|
|
1008
|
|
|
1009 /* If a user doc filter should be applied to DOC, do so. */
|
|
|
1010 static const char *
|
|
|
1011 filter_doc (const char *doc, int key, const struct argp *argp,
|
|
|
1012 const struct argp_state *state)
|
|
|
1013 {
|
|
|
1014 if (argp->help_filter)
|
|
|
1015 /* We must apply a user filter to this output. */
|
|
|
1016 {
|
|
|
1017 void *input = __argp_input (argp, state);
|
|
|
1018 return (*argp->help_filter) (key, doc, input);
|
|
|
1019 }
|
|
|
1020 else
|
|
|
1021 /* No filter. */
|
|
|
1022 return doc;
|
|
|
1023 }
|
|
|
1024
|
|
|
1025 /* Prints STR as a header line, with the margin lines set appropiately, and
|
|
|
1026 notes the fact that groups should be separated with a blank line. ARGP is
|
|
|
1027 the argp that should dictate any user doc filtering to take place. Note
|
|
|
1028 that the previous wrap margin isn't restored, but the left margin is reset
|
|
|
1029 to 0. */
|
|
|
1030 static void
|
|
|
1031 print_header (const char *str, const struct argp *argp,
|
|
|
1032 struct pentry_state *pest)
|
|
|
1033 {
|
|
|
1034 const char *tstr = dgettext (argp->argp_domain, str);
|
|
|
1035 const char *fstr = filter_doc (tstr, ARGP_KEY_HELP_HEADER, argp, pest->state);
|
|
|
1036
|
|
|
1037 if (fstr)
|
|
|
1038 {
|
|
|
1039 if (*fstr)
|
|
|
1040 {
|
|
|
1041 if (pest->hhstate->prev_entry)
|
|
|
1042 /* Precede with a blank line. */
|
|
|
1043 __argp_fmtstream_putc (pest->stream, '\n');
|
|
|
1044 indent_to (pest->stream, uparams.header_col);
|
|
|
1045 __argp_fmtstream_set_lmargin (pest->stream, uparams.header_col);
|
|
|
1046 __argp_fmtstream_set_wmargin (pest->stream, uparams.header_col);
|
|
|
1047 __argp_fmtstream_puts (pest->stream, fstr);
|
|
|
1048 __argp_fmtstream_set_lmargin (pest->stream, 0);
|
|
|
1049 __argp_fmtstream_putc (pest->stream, '\n');
|
|
|
1050 }
|
|
|
1051
|
|
|
1052 pest->hhstate->sep_groups = 1; /* Separate subsequent groups. */
|
|
|
1053 }
|
|
|
1054
|
|
|
1055 if (fstr != tstr)
|
|
|
1056 free ((char *) fstr);
|
|
|
1057 }
|
|
|
1058
|
|
|
1059 /* Inserts a comma if this isn't the first item on the line, and then makes
|
|
|
1060 sure we're at least to column COL. If this *is* the first item on a line,
|
|
|
1061 prints any pending whitespace/headers that should precede this line. Also
|
|
|
1062 clears FIRST. */
|
|
|
1063 static void
|
|
|
1064 comma (unsigned col, struct pentry_state *pest)
|
|
|
1065 {
|
|
|
1066 if (pest->first)
|
|
|
1067 {
|
|
|
1068 const struct hol_entry *pe = pest->hhstate->prev_entry;
|
|
|
1069 const struct hol_cluster *cl = pest->entry->cluster;
|
|
|
1070
|
|
|
1071 if (pest->hhstate->sep_groups && pe && pest->entry->group != pe->group)
|
|
|
1072 __argp_fmtstream_putc (pest->stream, '\n');
|
|
|
1073
|
|
|
1074 if (cl && cl->header && *cl->header
|
|
|
1075 && (!pe
|
|
|
1076 || (pe->cluster != cl
|
|
|
1077 && !hol_cluster_is_child (pe->cluster, cl))))
|
|
|
1078 /* If we're changing clusters, then this must be the start of the
|
|
|
1079 ENTRY's cluster unless that is an ancestor of the previous one
|
|
|
1080 (in which case we had just popped into a sub-cluster for a bit).
|
|
|
1081 If so, then print the cluster's header line. */
|
|
|
1082 {
|
|
|
1083 int old_wm = __argp_fmtstream_wmargin (pest->stream);
|
|
|
1084 print_header (cl->header, cl->argp, pest);
|
|
|
1085 __argp_fmtstream_set_wmargin (pest->stream, old_wm);
|
|
|
1086 }
|
|
|
1087
|
|
|
1088 pest->first = 0;
|
|
|
1089 }
|
|
|
1090 else
|
|
|
1091 __argp_fmtstream_puts (pest->stream, ", ");
|
|
|
1092
|
|
|
1093 indent_to (pest->stream, col);
|
|
|
1094 }
|
|
|
1095
|
|
|
1096 /* Print help for ENTRY to STREAM. */
|
|
|
1097 static void
|
|
|
1098 hol_entry_help (struct hol_entry *entry, const struct argp_state *state,
|
|
|
1099 argp_fmtstream_t stream, struct hol_help_state *hhstate)
|
|
|
1100 {
|
|
|
1101 unsigned num;
|
|
|
1102 const struct argp_option *real = entry->opt, *opt;
|
|
|
1103 char *so = entry->short_options;
|
|
|
1104 int have_long_opt = 0; /* We have any long options. */
|
|
|
1105 /* Saved margins. */
|
|
|
1106 int old_lm = __argp_fmtstream_set_lmargin (stream, 0);
|
|
|
1107 int old_wm = __argp_fmtstream_wmargin (stream);
|
|
|
1108 /* PEST is a state block holding some of our variables that we'd like to
|
|
|
1109 share with helper functions. */
|
|
|
1110 struct pentry_state pest;
|
|
|
1111
|
|
|
1112 pest.entry = entry;
|
|
|
1113 pest.stream = stream;
|
|
|
1114 pest.hhstate = hhstate;
|
|
|
1115 pest.first = 1;
|
|
|
1116 pest.state = state;
|
|
|
1117
|
|
|
1118 if (! odoc (real))
|
|
|
1119 for (opt = real, num = entry->num; num > 0; opt++, num--)
|
|
|
1120 if (opt->name && ovisible (opt))
|
|
|
1121 {
|
|
|
1122 have_long_opt = 1;
|
|
|
1123 break;
|
|
|
1124 }
|
|
|
1125
|
|
|
1126 /* First emit short options. */
|
|
|
1127 __argp_fmtstream_set_wmargin (stream, uparams.short_opt_col); /* For truly bizarre cases. */
|
|
|
1128 for (opt = real, num = entry->num; num > 0; opt++, num--)
|
|
|
1129 if (oshort (opt) && opt->key == *so)
|
|
|
1130 /* OPT has a valid (non shadowed) short option. */
|
|
|
1131 {
|
|
|
1132 if (ovisible (opt))
|
|
|
1133 {
|
|
|
1134 comma (uparams.short_opt_col, &pest);
|
|
|
1135 __argp_fmtstream_putc (stream, '-');
|
|
|
1136 __argp_fmtstream_putc (stream, *so);
|
|
|
1137 if (!have_long_opt || uparams.dup_args)
|
|
|
1138 arg (real, " %s", "[%s]", state->root_argp->argp_domain, stream);
|
|
|
1139 else if (real->arg)
|
|
|
1140 hhstate->suppressed_dup_arg = 1;
|
|
|
1141 }
|
|
|
1142 so++;
|
|
|
1143 }
|
|
|
1144
|
|
|
1145 /* Now, long options. */
|
|
|
1146 if (odoc (real))
|
|
|
1147 /* A `documentation' option. */
|
|
|
1148 {
|
|
|
1149 __argp_fmtstream_set_wmargin (stream, uparams.doc_opt_col);
|
|
|
1150 for (opt = real, num = entry->num; num > 0; opt++, num--)
|
|
|
1151 if (opt->name && *opt->name && ovisible (opt))
|
|
|
1152 {
|
|
|
1153 comma (uparams.doc_opt_col, &pest);
|
|
|
1154 /* Calling dgettext here isn't quite right, since sorting will
|
|
|
1155 have been done on the original; but documentation options
|
|
|
1156 should be pretty rare anyway... */
|
|
|
1157 __argp_fmtstream_puts (stream,
|
|
|
1158 onotrans (opt) ?
|
|
|
1159 opt->name :
|
|
|
1160 dgettext (state->root_argp->argp_domain,
|
|
|
1161 opt->name));
|
|
|
1162 }
|
|
|
1163 }
|
|
|
1164 else
|
|
|
1165 /* A real long option. */
|
|
|
1166 {
|
|
|
1167 int first_long_opt = 1;
|
|
|
1168
|
|
|
1169 __argp_fmtstream_set_wmargin (stream, uparams.long_opt_col);
|
|
|
1170 for (opt = real, num = entry->num; num > 0; opt++, num--)
|
|
|
1171 if (opt->name && ovisible (opt))
|
|
|
1172 {
|
|
|
1173 comma (uparams.long_opt_col, &pest);
|
|
|
1174 __argp_fmtstream_printf (stream, "--%s", opt->name);
|
|
|
1175 if (first_long_opt || uparams.dup_args)
|
|
|
1176 arg (real, "=%s", "[=%s]", state->root_argp->argp_domain,
|
|
|
1177 stream);
|
|
|
1178 else if (real->arg)
|
|
|
1179 hhstate->suppressed_dup_arg = 1;
|
|
|
1180 }
|
|
|
1181 }
|
|
|
1182
|
|
|
1183 /* Next, documentation strings. */
|
|
|
1184 __argp_fmtstream_set_lmargin (stream, 0);
|
|
|
1185
|
|
|
1186 if (pest.first)
|
|
|
1187 {
|
|
|
1188 /* Didn't print any switches, what's up? */
|
|
|
1189 if (!oshort (real) && !real->name)
|
|
|
1190 /* This is a group header, print it nicely. */
|
|
|
1191 print_header (real->doc, entry->argp, &pest);
|
|
|
1192 else
|
|
|
1193 /* Just a totally shadowed option or null header; print nothing. */
|
|
|
1194 goto cleanup; /* Just return, after cleaning up. */
|
|
|
1195 }
|
|
|
1196 else
|
|
|
1197 {
|
|
|
1198 const char *tstr = real->doc ? dgettext (state->root_argp->argp_domain,
|
|
|
1199 real->doc) : 0;
|
|
|
1200 const char *fstr = filter_doc (tstr, real->key, entry->argp, state);
|
|
|
1201 if (fstr && *fstr)
|
|
|
1202 {
|
|
|
1203 unsigned int col = __argp_fmtstream_point (stream);
|
|
|
1204
|
|
|
1205 __argp_fmtstream_set_lmargin (stream, uparams.opt_doc_col);
|
|
|
1206 __argp_fmtstream_set_wmargin (stream, uparams.opt_doc_col);
|
|
|
1207
|
|
|
1208 if (col > (unsigned int) (uparams.opt_doc_col + 3))
|
|
|
1209 __argp_fmtstream_putc (stream, '\n');
|
|
|
1210 else if (col >= (unsigned int) uparams.opt_doc_col)
|
|
|
1211 __argp_fmtstream_puts (stream, " ");
|
|
|
1212 else
|
|
|
1213 indent_to (stream, uparams.opt_doc_col);
|
|
|
1214
|
|
|
1215 __argp_fmtstream_puts (stream, fstr);
|
|
|
1216 }
|
|
|
1217 if (fstr && fstr != tstr)
|
|
|
1218 free ((char *) fstr);
|
|
|
1219
|
|
|
1220 /* Reset the left margin. */
|
|
|
1221 __argp_fmtstream_set_lmargin (stream, 0);
|
|
|
1222 __argp_fmtstream_putc (stream, '\n');
|
|
|
1223 }
|
|
|
1224
|
|
|
1225 hhstate->prev_entry = entry;
|
|
|
1226
|
|
|
1227 cleanup:
|
|
|
1228 __argp_fmtstream_set_lmargin (stream, old_lm);
|
|
|
1229 __argp_fmtstream_set_wmargin (stream, old_wm);
|
|
|
1230 }
|
|
|
1231
|
|
|
1232 /* Output a long help message about the options in HOL to STREAM. */
|
|
|
1233 static void
|
|
|
1234 hol_help (struct hol *hol, const struct argp_state *state,
|
|
|
1235 argp_fmtstream_t stream)
|
|
|
1236 {
|
|
|
1237 unsigned num;
|
|
|
1238 struct hol_entry *entry;
|
|
|
1239 struct hol_help_state hhstate = { 0, 0, 0 };
|
|
|
1240
|
|
|
1241 for (entry = hol->entries, num = hol->num_entries; num > 0; entry++, num--)
|
|
|
1242 hol_entry_help (entry, state, stream, &hhstate);
|
|
|
1243
|
|
|
1244 if (hhstate.suppressed_dup_arg && uparams.dup_args_note)
|
|
|
1245 {
|
|
|
1246 const char *tstr = dgettext (state->root_argp->argp_domain, "\
|
|
|
1247 Mandatory or optional arguments to long options are also mandatory or \
|
|
|
1248 optional for any corresponding short options.");
|
|
|
1249 const char *fstr = filter_doc (tstr, ARGP_KEY_HELP_DUP_ARGS_NOTE,
|
|
|
1250 state ? state->root_argp : 0, state);
|
|
|
1251 if (fstr && *fstr)
|
|
|
1252 {
|
|
|
1253 __argp_fmtstream_putc (stream, '\n');
|
|
|
1254 __argp_fmtstream_puts (stream, fstr);
|
|
|
1255 __argp_fmtstream_putc (stream, '\n');
|
|
|
1256 }
|
|
|
1257 if (fstr && fstr != tstr)
|
|
|
1258 free ((char *) fstr);
|
|
|
1259 }
|
|
|
1260 }
|
|
|
1261
|
|
|
1262 /* Helper functions for hol_usage. */
|
|
|
1263
|
|
|
1264 /* If OPT is a short option without an arg, append its key to the string
|
|
|
1265 pointer pointer to by COOKIE, and advance the pointer. */
|
|
|
1266 static int
|
|
|
1267 add_argless_short_opt (const struct argp_option *opt,
|
|
|
1268 const struct argp_option *real,
|
|
|
1269 const char *domain, void *cookie)
|
|
|
1270 {
|
|
|
1271 char **snao_end = cookie;
|
|
|
1272 if (!(opt->arg || real->arg)
|
|
|
1273 && !((opt->flags | real->flags) & OPTION_NO_USAGE))
|
|
|
1274 *(*snao_end)++ = opt->key;
|
|
|
1275 return 0;
|
|
|
1276 }
|
|
|
1277
|
|
|
1278 /* If OPT is a short option with an arg, output a usage entry for it to the
|
|
|
1279 stream pointed at by COOKIE. */
|
|
|
1280 static int
|
|
|
1281 usage_argful_short_opt (const struct argp_option *opt,
|
|
|
1282 const struct argp_option *real,
|
|
|
1283 const char *domain, void *cookie)
|
|
|
1284 {
|
|
|
1285 argp_fmtstream_t stream = cookie;
|
|
|
1286 const char *arg = opt->arg;
|
|
|
1287 int flags = opt->flags | real->flags;
|
|
|
1288
|
|
|
1289 if (! arg)
|
|
|
1290 arg = real->arg;
|
|
|
1291
|
|
|
1292 if (arg && !(flags & OPTION_NO_USAGE))
|
|
|
1293 {
|
|
|
1294 arg = dgettext (domain, arg);
|
|
|
1295
|
|
|
1296 if (flags & OPTION_ARG_OPTIONAL)
|
|
|
1297 __argp_fmtstream_printf (stream, " [-%c[%s]]", opt->key, arg);
|
|
|
1298 else
|
|
|
1299 {
|
|
|
1300 /* Manually do line wrapping so that it (probably) won't
|
|
|
1301 get wrapped at the embedded space. */
|
|
|
1302 space (stream, 6 + strlen (arg));
|
|
|
1303 __argp_fmtstream_printf (stream, "[-%c %s]", opt->key, arg);
|
|
|
1304 }
|
|
|
1305 }
|
|
|
1306
|
|
|
1307 return 0;
|
|
|
1308 }
|
|
|
1309
|
|
|
1310 /* Output a usage entry for the long option opt to the stream pointed at by
|
|
|
1311 COOKIE. */
|
|
|
1312 static int
|
|
|
1313 usage_long_opt (const struct argp_option *opt,
|
|
|
1314 const struct argp_option *real,
|
|
|
1315 const char *domain, void *cookie)
|
|
|
1316 {
|
|
|
1317 argp_fmtstream_t stream = cookie;
|
|
|
1318 const char *arg = opt->arg;
|
|
|
1319 int flags = opt->flags | real->flags;
|
|
|
1320
|
|
|
1321 if (! arg)
|
|
|
1322 arg = real->arg;
|
|
|
1323
|
|
|
1324 if (! (flags & OPTION_NO_USAGE) && !odoc (opt))
|
|
|
1325 {
|
|
|
1326 if (arg)
|
|
|
1327 {
|
|
|
1328 arg = dgettext (domain, arg);
|
|
|
1329 if (flags & OPTION_ARG_OPTIONAL)
|
|
|
1330 __argp_fmtstream_printf (stream, " [--%s[=%s]]", opt->name, arg);
|
|
|
1331 else
|
|
|
1332 __argp_fmtstream_printf (stream, " [--%s=%s]", opt->name, arg);
|
|
|
1333 }
|
|
|
1334 else
|
|
|
1335 __argp_fmtstream_printf (stream, " [--%s]", opt->name);
|
|
|
1336 }
|
|
|
1337
|
|
|
1338 return 0;
|
|
|
1339 }
|
|
|
1340
|
|
|
1341 /* Print a short usage description for the arguments in HOL to STREAM. */
|
|
|
1342 static void
|
|
|
1343 hol_usage (struct hol *hol, argp_fmtstream_t stream)
|
|
|
1344 {
|
|
|
1345 if (hol->num_entries > 0)
|
|
|
1346 {
|
|
|
1347 unsigned nentries;
|
|
|
1348 struct hol_entry *entry;
|
|
|
1349 char *short_no_arg_opts = alloca (strlen (hol->short_options) + 1);
|
|
|
1350 char *snao_end = short_no_arg_opts;
|
|
|
1351
|
|
|
1352 /* First we put a list of short options without arguments. */
|
|
|
1353 for (entry = hol->entries, nentries = hol->num_entries
|
|
|
1354 ; nentries > 0
|
|
|
1355 ; entry++, nentries--)
|
|
|
1356 hol_entry_short_iterate (entry, add_argless_short_opt,
|
|
|
1357 entry->argp->argp_domain, &snao_end);
|
|
|
1358 if (snao_end > short_no_arg_opts)
|
|
|
1359 {
|
|
|
1360 *snao_end++ = 0;
|
|
|
1361 __argp_fmtstream_printf (stream, " [-%s]", short_no_arg_opts);
|
|
|
1362 }
|
|
|
1363
|
|
|
1364 /* Now a list of short options *with* arguments. */
|
|
|
1365 for (entry = hol->entries, nentries = hol->num_entries
|
|
|
1366 ; nentries > 0
|
|
|
1367 ; entry++, nentries--)
|
|
|
1368 hol_entry_short_iterate (entry, usage_argful_short_opt,
|
|
|
1369 entry->argp->argp_domain, stream);
|
|
|
1370
|
|
|
1371 /* Finally, a list of long options (whew!). */
|
|
|
1372 for (entry = hol->entries, nentries = hol->num_entries
|
|
|
1373 ; nentries > 0
|
|
|
1374 ; entry++, nentries--)
|
|
|
1375 hol_entry_long_iterate (entry, usage_long_opt,
|
|
|
1376 entry->argp->argp_domain, stream);
|
|
|
1377 }
|
|
|
1378 }
|
|
|
1379
|
|
|
1380 /* Make a HOL containing all levels of options in ARGP. CLUSTER is the
|
|
|
1381 cluster in which ARGP's entries should be clustered, or 0. */
|
|
|
1382 static struct hol *
|
|
|
1383 argp_hol (const struct argp *argp, struct hol_cluster *cluster)
|
|
|
1384 {
|
|
|
1385 const struct argp_child *child = argp->children;
|
|
|
1386 struct hol *hol = make_hol (argp, cluster);
|
|
|
1387 if (child)
|
|
|
1388 while (child->argp)
|
|
|
1389 {
|
|
|
1390 struct hol_cluster *child_cluster =
|
|
|
1391 ((child->group || child->header)
|
|
|
1392 /* Put CHILD->argp within its own cluster. */
|
|
|
1393 ? hol_add_cluster (hol, child->group, child->header,
|
|
|
1394 child - argp->children, cluster, argp)
|
|
|
1395 /* Just merge it into the parent's cluster. */
|
|
|
1396 : cluster);
|
|
|
1397 hol_append (hol, argp_hol (child->argp, child_cluster)) ;
|
|
|
1398 child++;
|
|
|
1399 }
|
|
|
1400 return hol;
|
|
|
1401 }
|
|
|
1402
|
|
|
1403 /* Calculate how many different levels with alternative args strings exist in
|
|
|
1404 ARGP. */
|
|
|
1405 static size_t
|
|
|
1406 argp_args_levels (const struct argp *argp)
|
|
|
1407 {
|
|
|
1408 size_t levels = 0;
|
|
|
1409 const struct argp_child *child = argp->children;
|
|
|
1410
|
|
|
1411 if (argp->args_doc && strchr (argp->args_doc, '\n'))
|
|
|
1412 levels++;
|
|
|
1413
|
|
|
1414 if (child)
|
|
|
1415 while (child->argp)
|
|
|
1416 levels += argp_args_levels ((child++)->argp);
|
|
|
1417
|
|
|
1418 return levels;
|
|
|
1419 }
|
|
|
1420
|
|
|
1421 /* Print all the non-option args documented in ARGP to STREAM. Any output is
|
|
|
1422 preceded by a space. LEVELS is a pointer to a byte vector the length
|
|
|
1423 returned by argp_args_levels; it should be initialized to zero, and
|
|
|
1424 updated by this routine for the next call if ADVANCE is true. True is
|
|
|
1425 returned as long as there are more patterns to output. */
|
|
|
1426 static int
|
|
|
1427 argp_args_usage (const struct argp *argp, const struct argp_state *state,
|
|
|
1428 char **levels, int advance, argp_fmtstream_t stream)
|
|
|
1429 {
|
|
|
1430 char *our_level = *levels;
|
|
|
1431 int multiple = 0;
|
|
|
1432 const struct argp_child *child = argp->children;
|
|
|
1433 const char *tdoc = dgettext (argp->argp_domain, argp->args_doc), *nl = 0;
|
|
|
1434 const char *fdoc = filter_doc (tdoc, ARGP_KEY_HELP_ARGS_DOC, argp, state);
|
|
|
1435
|
|
|
1436 if (fdoc)
|
|
|
1437 {
|
|
|
1438 const char *cp = fdoc;
|
|
|
1439 nl = __strchrnul (cp, '\n');
|
|
|
1440 if (*nl != '\0')
|
|
|
1441 /* This is a `multi-level' args doc; advance to the correct position
|
|
|
1442 as determined by our state in LEVELS, and update LEVELS. */
|
|
|
1443 {
|
|
|
1444 int i;
|
|
|
1445 multiple = 1;
|
|
|
1446 for (i = 0; i < *our_level; i++)
|
|
|
1447 cp = nl + 1, nl = __strchrnul (cp, '\n');
|
|
|
1448 (*levels)++;
|
|
|
1449 }
|
|
|
1450
|
|
|
1451 /* Manually do line wrapping so that it (probably) won't get wrapped at
|
|
|
1452 any embedded spaces. */
|
|
|
1453 space (stream, 1 + nl - cp);
|
|
|
1454
|
|
|
1455 __argp_fmtstream_write (stream, cp, nl - cp);
|
|
|
1456 }
|
|
|
1457 if (fdoc && fdoc != tdoc)
|
|
|
1458 free ((char *)fdoc); /* Free user's modified doc string. */
|
|
|
1459
|
|
|
1460 if (child)
|
|
|
1461 while (child->argp)
|
|
|
1462 advance = !argp_args_usage ((child++)->argp, state, levels, advance, stream);
|
|
|
1463
|
|
|
1464 if (advance && multiple)
|
|
|
1465 {
|
|
|
1466 /* Need to increment our level. */
|
|
|
1467 if (*nl)
|
|
|
1468 /* There's more we can do here. */
|
|
|
1469 {
|
|
|
1470 (*our_level)++;
|
|
|
1471 advance = 0; /* Our parent shouldn't advance also. */
|
|
|
1472 }
|
|
|
1473 else if (*our_level > 0)
|
|
|
1474 /* We had multiple levels, but used them up; reset to zero. */
|
|
|
1475 *our_level = 0;
|
|
|
1476 }
|
|
|
1477
|
|
|
1478 return !advance;
|
|
|
1479 }
|
|
|
1480
|
|
|
1481 /* Print the documentation for ARGP to STREAM; if POST is false, then
|
|
|
1482 everything preceeding a `\v' character in the documentation strings (or
|
|
|
1483 the whole string, for those with none) is printed, otherwise, everything
|
|
|
1484 following the `\v' character (nothing for strings without). Each separate
|
|
|
1485 bit of documentation is separated a blank line, and if PRE_BLANK is true,
|
|
|
1486 then the first is as well. If FIRST_ONLY is true, only the first
|
|
|
1487 occurrence is output. Returns true if anything was output. */
|
|
|
1488 static int
|
|
|
1489 argp_doc (const struct argp *argp, const struct argp_state *state,
|
|
|
1490 int post, int pre_blank, int first_only,
|
|
|
1491 argp_fmtstream_t stream)
|
|
|
1492 {
|
|
|
1493 const char *text;
|
|
|
1494 const char *inp_text;
|
|
|
1495 size_t inp_text_len = 0;
|
|
|
1496 const char *trans_text;
|
|
|
1497 void *input = 0;
|
|
|
1498 int anything = 0;
|
|
|
1499 const struct argp_child *child = argp->children;
|
|
|
1500
|
|
|
1501 if (argp->doc)
|
|
|
1502 {
|
|
|
1503 char *vt = strchr (argp->doc, '\v');
|
|
|
1504 if (vt)
|
|
|
1505 {
|
|
|
1506 if (post)
|
|
|
1507 inp_text = vt + 1;
|
|
|
1508 else
|
|
|
1509 {
|
|
|
1510 inp_text_len = vt - argp->doc;
|
|
|
1511 inp_text = __strndup (argp->doc, inp_text_len);
|
|
|
1512 }
|
|
|
1513 }
|
|
|
1514 else
|
|
|
1515 inp_text = post ? 0 : argp->doc;
|
|
|
1516 trans_text = inp_text ? dgettext (argp->argp_domain, inp_text) : NULL;
|
|
|
1517 }
|
|
|
1518 else
|
|
|
1519 trans_text = inp_text = 0;
|
|
|
1520
|
|
|
1521 if (argp->help_filter)
|
|
|
1522 /* We have to filter the doc strings. */
|
|
|
1523 {
|
|
|
1524 input = __argp_input (argp, state);
|
|
|
1525 text =
|
|
|
1526 (*argp->help_filter) (post
|
|
|
1527 ? ARGP_KEY_HELP_POST_DOC
|
|
|
1528 : ARGP_KEY_HELP_PRE_DOC,
|
|
|
1529 trans_text, input);
|
|
|
1530 }
|
|
|
1531 else
|
|
|
1532 text = (const char *) trans_text;
|
|
|
1533
|
|
|
1534 if (text)
|
|
|
1535 {
|
|
|
1536 if (pre_blank)
|
|
|
1537 __argp_fmtstream_putc (stream, '\n');
|
|
|
1538
|
|
|
1539 __argp_fmtstream_puts (stream, text);
|
|
|
1540
|
|
|
1541 if (__argp_fmtstream_point (stream) > __argp_fmtstream_lmargin (stream))
|
|
|
1542 __argp_fmtstream_putc (stream, '\n');
|
|
|
1543
|
|
|
1544 anything = 1;
|
|
|
1545 }
|
|
|
1546
|
|
|
1547 if (text && text != trans_text)
|
|
|
1548 free ((char *) text); /* Free TEXT returned from the help filter. */
|
|
|
1549
|
|
|
1550 if (inp_text && inp_text_len)
|
|
|
1551 free ((char *) inp_text); /* We copied INP_TEXT, so free it now. */
|
|
|
1552
|
|
|
1553 if (post && argp->help_filter)
|
|
|
1554 /* Now see if we have to output a ARGP_KEY_HELP_EXTRA text. */
|
|
|
1555 {
|
|
|
1556 text = (*argp->help_filter) (ARGP_KEY_HELP_EXTRA, 0, input);
|
|
|
1557 if (text)
|
|
|
1558 {
|
|
|
1559 if (anything || pre_blank)
|
|
|
1560 __argp_fmtstream_putc (stream, '\n');
|
|
|
1561 __argp_fmtstream_puts (stream, text);
|
|
|
1562 free ((char *) text);
|
|
|
1563 if (__argp_fmtstream_point (stream)
|
|
|
1564 > __argp_fmtstream_lmargin (stream))
|
|
|
1565 __argp_fmtstream_putc (stream, '\n');
|
|
|
1566 anything = 1;
|
|
|
1567 }
|
|
|
1568 }
|
|
|
1569
|
|
|
1570 if (child)
|
|
|
1571 while (child->argp && !(first_only && anything))
|
|
|
1572 anything |=
|
|
|
1573 argp_doc ((child++)->argp, state,
|
|
|
1574 post, anything || pre_blank, first_only,
|
|
|
1575 stream);
|
|
|
1576
|
|
|
1577 return anything;
|
|
|
1578 }
|
|
|
1579
|
|
|
1580 /* Output a usage message for ARGP to STREAM. If called from
|
|
|
1581 argp_state_help, STATE is the relevent parsing state. FLAGS are from the
|
|
|
1582 set ARGP_HELP_*. NAME is what to use wherever a `program name' is
|
|
|
1583 needed. */
|
|
|
1584 static void
|
|
|
1585 _help (const struct argp *argp, const struct argp_state *state, FILE *stream,
|
|
|
1586 unsigned flags, char *name)
|
|
|
1587 {
|
|
|
1588 int anything = 0; /* Whether we've output anything. */
|
|
|
1589 struct hol *hol = 0;
|
|
|
1590 argp_fmtstream_t fs;
|
|
|
1591
|
|
|
1592 if (! stream)
|
|
|
1593 return;
|
|
|
1594
|
|
|
1595 #if _LIBC || (HAVE_FLOCKFILE && HAVE_FUNLOCKFILE)
|
|
|
1596 __flockfile (stream);
|
|
|
1597 #endif
|
|
|
1598
|
|
|
1599 if (! uparams.valid)
|
|
|
1600 fill_in_uparams (state);
|
|
|
1601
|
|
|
1602 fs = __argp_make_fmtstream (stream, 0, uparams.rmargin, 0);
|
|
|
1603 if (! fs)
|
|
|
1604 {
|
|
|
1605 #if _LIBC || (HAVE_FLOCKFILE && HAVE_FUNLOCKFILE)
|
|
|
1606 __funlockfile (stream);
|
|
|
1607 #endif
|
|
|
1608 return;
|
|
|
1609 }
|
|
|
1610
|
|
|
1611 if (flags & (ARGP_HELP_USAGE | ARGP_HELP_SHORT_USAGE | ARGP_HELP_LONG))
|
|
|
1612 {
|
|
|
1613 hol = argp_hol (argp, 0);
|
|
|
1614
|
|
|
1615 /* If present, these options always come last. */
|
|
|
1616 hol_set_group (hol, "help", -1);
|
|
|
1617 hol_set_group (hol, "version", -1);
|
|
|
1618
|
|
|
1619 hol_sort (hol);
|
|
|
1620 }
|
|
|
1621
|
|
|
1622 if (flags & (ARGP_HELP_USAGE | ARGP_HELP_SHORT_USAGE))
|
|
|
1623 /* Print a short `Usage:' message. */
|
|
|
1624 {
|
|
|
1625 int first_pattern = 1, more_patterns;
|
|
|
1626 size_t num_pattern_levels = argp_args_levels (argp);
|
|
|
1627 char *pattern_levels = alloca (num_pattern_levels);
|
|
|
1628
|
|
|
1629 memset (pattern_levels, 0, num_pattern_levels);
|
|
|
1630
|
|
|
1631 do
|
|
|
1632 {
|
|
|
1633 int old_lm;
|
|
|
1634 int old_wm = __argp_fmtstream_set_wmargin (fs, uparams.usage_indent);
|
|
|
1635 char *levels = pattern_levels;
|
|
|
1636
|
|
|
1637 if (first_pattern)
|
|
|
1638 __argp_fmtstream_printf (fs, "%s %s",
|
|
|
1639 dgettext (argp->argp_domain, "Usage:"),
|
|
|
1640 name);
|
|
|
1641 else
|
|
|
1642 __argp_fmtstream_printf (fs, "%s %s",
|
|
|
1643 dgettext (argp->argp_domain, " or: "),
|
|
|
1644 name);
|
|
|
1645
|
|
|
1646 /* We set the lmargin as well as the wmargin, because hol_usage
|
|
|
1647 manually wraps options with newline to avoid annoying breaks. */
|
|
|
1648 old_lm = __argp_fmtstream_set_lmargin (fs, uparams.usage_indent);
|
|
|
1649
|
|
|
1650 if (flags & ARGP_HELP_SHORT_USAGE)
|
|
|
1651 /* Just show where the options go. */
|
|
|
1652 {
|
|
|
1653 if (hol->num_entries > 0)
|
|
|
1654 __argp_fmtstream_puts (fs, dgettext (argp->argp_domain,
|
|
|
1655 " [OPTION...]"));
|
|
|
1656 }
|
|
|
1657 else
|
|
|
1658 /* Actually print the options. */
|
|
|
1659 {
|
|
|
1660 hol_usage (hol, fs);
|
|
|
1661 flags |= ARGP_HELP_SHORT_USAGE; /* But only do so once. */
|
|
|
1662 }
|
|
|
1663
|
|
|
1664 more_patterns = argp_args_usage (argp, state, &levels, 1, fs);
|
|
|
1665
|
|
|
1666 __argp_fmtstream_set_wmargin (fs, old_wm);
|
|
|
1667 __argp_fmtstream_set_lmargin (fs, old_lm);
|
|
|
1668
|
|
|
1669 __argp_fmtstream_putc (fs, '\n');
|
|
|
1670 anything = 1;
|
|
|
1671
|
|
|
1672 first_pattern = 0;
|
|
|
1673 }
|
|
|
1674 while (more_patterns);
|
|
|
1675 }
|
|
|
1676
|
|
|
1677 if (flags & ARGP_HELP_PRE_DOC)
|
|
|
1678 anything |= argp_doc (argp, state, 0, 0, 1, fs);
|
|
|
1679
|
|
|
1680 if (flags & ARGP_HELP_SEE)
|
|
|
1681 {
|
|
|
1682 __argp_fmtstream_printf (fs, dgettext (argp->argp_domain, "\
|
|
|
1683 Try `%s --help' or `%s --usage' for more information.\n"),
|
|
|
1684 name, name);
|
|
|
1685 anything = 1;
|
|
|
1686 }
|
|
|
1687
|
|
|
1688 if (flags & ARGP_HELP_LONG)
|
|
|
1689 /* Print a long, detailed help message. */
|
|
|
1690 {
|
|
|
1691 /* Print info about all the options. */
|
|
|
1692 if (hol->num_entries > 0)
|
|
|
1693 {
|
|
|
1694 if (anything)
|
|
|
1695 __argp_fmtstream_putc (fs, '\n');
|
|
|
1696 hol_help (hol, state, fs);
|
|
|
1697 anything = 1;
|
|
|
1698 }
|
|
|
1699 }
|
|
|
1700
|
|
|
1701 if (flags & ARGP_HELP_POST_DOC)
|
|
|
1702 /* Print any documentation strings at the end. */
|
|
|
1703 anything |= argp_doc (argp, state, 1, anything, 0, fs);
|
|
|
1704
|
|
|
1705 if ((flags & ARGP_HELP_BUG_ADDR) && argp_program_bug_address)
|
|
|
1706 {
|
|
|
1707 if (anything)
|
|
|
1708 __argp_fmtstream_putc (fs, '\n');
|
|
|
1709 __argp_fmtstream_printf (fs, dgettext (argp->argp_domain,
|
|
|
1710 "Report bugs to %s.\n"),
|
|
|
1711 argp_program_bug_address);
|
|
|
1712 anything = 1;
|
|
|
1713 }
|
|
|
1714
|
|
|
1715 #if _LIBC || (HAVE_FLOCKFILE && HAVE_FUNLOCKFILE)
|
|
|
1716 __funlockfile (stream);
|
|
|
1717 #endif
|
|
|
1718
|
|
|
1719 if (hol)
|
|
|
1720 hol_free (hol);
|
|
|
1721
|
|
|
1722 __argp_fmtstream_free (fs);
|
|
|
1723 }
|
|
|
1724
|
|
|
1725 /* Output a usage message for ARGP to STREAM. FLAGS are from the set
|
|
|
1726 ARGP_HELP_*. NAME is what to use wherever a `program name' is needed. */
|
|
|
1727 void __argp_help (const struct argp *argp, FILE *stream,
|
|
|
1728 unsigned flags, char *name)
|
|
|
1729 {
|
|
|
1730 struct argp_state state;
|
|
|
1731 memset (&state, 0, sizeof state);
|
|
|
1732 state.root_argp = argp;
|
|
|
1733 _help (argp, &state, stream, flags, name);
|
|
|
1734 }
|
|
|
1735 #ifdef weak_alias
|
|
|
1736 weak_alias (__argp_help, argp_help)
|
|
|
1737 #endif
|
|
|
1738
|
|
|
1739 #if ! (defined _LIBC || HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME)
|
|
|
1740 char *
|
|
|
1741 __argp_short_program_name (void)
|
|
|
1742 {
|
|
|
1743 # if HAVE_DECL_PROGRAM_INVOCATION_NAME
|
|
|
1744 return __argp_base_name (program_invocation_name);
|
|
|
1745 # else
|
|
|
1746 /* FIXME: What now? Miles suggests that it is better to use NULL,
|
|
|
1747 but currently the value is passed on directly to fputs_unlocked,
|
|
|
1748 so that requires more changes. */
|
|
|
1749 # if __GNUC__
|
|
|
1750 # warning No reasonable value to return
|
|
|
1751 # endif /* __GNUC__ */
|
|
|
1752 return "";
|
|
|
1753 # endif
|
|
|
1754 }
|
|
|
1755 #endif
|
|
|
1756
|
|
|
1757 /* Output, if appropriate, a usage message for STATE to STREAM. FLAGS are
|
|
|
1758 from the set ARGP_HELP_*. */
|
|
|
1759 void
|
|
|
1760 __argp_state_help (const struct argp_state *state, FILE *stream, unsigned flags)
|
|
|
1761 {
|
|
|
1762 if ((!state || ! (state->flags & ARGP_NO_ERRS)) && stream)
|
|
|
1763 {
|
|
|
1764 if (state && (state->flags & ARGP_LONG_ONLY))
|
|
|
1765 flags |= ARGP_HELP_LONG_ONLY;
|
|
|
1766
|
|
|
1767 _help (state ? state->root_argp : 0, state, stream, flags,
|
|
|
1768 state ? state->name : __argp_short_program_name ());
|
|
|
1769
|
|
|
1770 if (!state || ! (state->flags & ARGP_NO_EXIT))
|
|
|
1771 {
|
|
|
1772 if (flags & ARGP_HELP_EXIT_ERR)
|
|
|
1773 exit (argp_err_exit_status);
|
|
|
1774 if (flags & ARGP_HELP_EXIT_OK)
|
|
|
1775 exit (0);
|
|
|
1776 }
|
|
|
1777 }
|
|
|
1778 }
|
|
|
1779 #ifdef weak_alias
|
|
|
1780 weak_alias (__argp_state_help, argp_state_help)
|
|
|
1781 #endif
|
|
|
1782
|
|
|
1783 /* If appropriate, print the printf string FMT and following args, preceded
|
|
|
1784 by the program name and `:', to stderr, and followed by a `Try ... --help'
|
|
|
1785 message, then exit (1). */
|
|
|
1786 void
|
|
|
1787 __argp_error (const struct argp_state *state, const char *fmt, ...)
|
|
|
1788 {
|
|
|
1789 if (!state || !(state->flags & ARGP_NO_ERRS))
|
|
|
1790 {
|
|
|
1791 FILE *stream = state ? state->err_stream : stderr;
|
|
|
1792
|
|
|
1793 if (stream)
|
|
|
1794 {
|
|
|
1795 va_list ap;
|
|
|
1796
|
|
|
1797 #if _LIBC || (HAVE_FLOCKFILE && HAVE_FUNLOCKFILE)
|
|
|
1798 __flockfile (stream);
|
|
|
1799 #endif
|
|
|
1800
|
|
|
1801 va_start (ap, fmt);
|
|
|
1802
|
|
|
1803 #ifdef USE_IN_LIBIO
|
|
|
1804 if (_IO_fwide (stream, 0) > 0)
|
|
|
1805 {
|
|
|
1806 char *buf;
|
|
|
1807
|
|
|
1808 if (__asprintf (&buf, fmt, ap) < 0)
|
|
|
1809 buf = NULL;
|
|
|
1810
|
|
|
1811 __fwprintf (stream, L"%s: %s\n",
|
|
|
1812 state ? state->name : __argp_short_program_name (),
|
|
|
1813 buf);
|
|
|
1814
|
|
|
1815 free (buf);
|
|
|
1816 }
|
|
|
1817 else
|
|
|
1818 #endif
|
|
|
1819 {
|
|
|
1820 fputs_unlocked (state
|
|
|
1821 ? state->name : __argp_short_program_name (),
|
|
|
1822 stream);
|
|
|
1823 putc_unlocked (':', stream);
|
|
|
1824 putc_unlocked (' ', stream);
|
|
|
1825
|
|
|
1826 vfprintf (stream, fmt, ap);
|
|
|
1827
|
|
|
1828 putc_unlocked ('\n', stream);
|
|
|
1829 }
|
|
|
1830
|
|
|
1831 __argp_state_help (state, stream, ARGP_HELP_STD_ERR);
|
|
|
1832
|
|
|
1833 va_end (ap);
|
|
|
1834
|
|
|
1835 #if _LIBC || (HAVE_FLOCKFILE && HAVE_FUNLOCKFILE)
|
|
|
1836 __funlockfile (stream);
|
|
|
1837 #endif
|
|
|
1838 }
|
|
|
1839 }
|
|
|
1840 }
|
|
|
1841 #ifdef weak_alias
|
|
|
1842 weak_alias (__argp_error, argp_error)
|
|
|
1843 #endif
|
|
|
1844
|
|
|
1845 /* Similar to the standard gnu error-reporting function error(), but will
|
|
|
1846 respect the ARGP_NO_EXIT and ARGP_NO_ERRS flags in STATE, and will print
|
|
|
1847 to STATE->err_stream. This is useful for argument parsing code that is
|
|
|
1848 shared between program startup (when exiting is desired) and runtime
|
|
|
1849 option parsing (when typically an error code is returned instead). The
|
|
|
1850 difference between this function and argp_error is that the latter is for
|
|
|
1851 *parsing errors*, and the former is for other problems that occur during
|
|
|
1852 parsing but don't reflect a (syntactic) problem with the input. */
|
|
|
1853 void
|
|
|
1854 __argp_failure (const struct argp_state *state, int status, int errnum,
|
|
|
1855 const char *fmt, ...)
|
|
|
1856 {
|
|
|
1857 if (!state || !(state->flags & ARGP_NO_ERRS))
|
|
|
1858 {
|
|
|
1859 FILE *stream = state ? state->err_stream : stderr;
|
|
|
1860
|
|
|
1861 if (stream)
|
|
|
1862 {
|
|
|
1863 #if _LIBC || (HAVE_FLOCKFILE && HAVE_FUNLOCKFILE)
|
|
|
1864 __flockfile (stream);
|
|
|
1865 #endif
|
|
|
1866
|
|
|
1867 #ifdef USE_IN_LIBIO
|
|
|
1868 if (_IO_fwide (stream, 0) > 0)
|
|
|
1869 __fwprintf (stream, L"%s",
|
|
|
1870 state ? state->name : __argp_short_program_name ());
|
|
|
1871 else
|
|
|
1872 #endif
|
|
|
1873 fputs_unlocked (state
|
|
|
1874 ? state->name : __argp_short_program_name (),
|
|
|
1875 stream);
|
|
|
1876
|
|
|
1877 if (fmt)
|
|
|
1878 {
|
|
|
1879 va_list ap;
|
|
|
1880
|
|
|
1881 va_start (ap, fmt);
|
|
|
1882 #ifdef USE_IN_LIBIO
|
|
|
1883 if (_IO_fwide (stream, 0) > 0)
|
|
|
1884 {
|
|
|
1885 char *buf;
|
|
|
1886
|
|
|
1887 if (__asprintf (&buf, fmt, ap) < 0)
|
|
|
1888 buf = NULL;
|
|
|
1889
|
|
|
1890 __fwprintf (stream, L": %s", buf);
|
|
|
1891
|
|
|
1892 free (buf);
|
|
|
1893 }
|
|
|
1894 else
|
|
|
1895 #endif
|
|
|
1896 {
|
|
|
1897 putc_unlocked (':', stream);
|
|
|
1898 putc_unlocked (' ', stream);
|
|
|
1899
|
|
|
1900 vfprintf (stream, fmt, ap);
|
|
|
1901 }
|
|
|
1902
|
|
|
1903 va_end (ap);
|
|
|
1904 }
|
|
|
1905
|
|
|
1906 if (errnum)
|
|
|
1907 {
|
|
|
1908 char buf[200];
|
|
|
1909
|
|
|
1910 #ifdef USE_IN_LIBIO
|
|
|
1911 if (_IO_fwide (stream, 0) > 0)
|
|
|
1912 __fwprintf (stream, L": %s",
|
|
|
1913 __strerror_r (errnum, buf, sizeof (buf)));
|
|
|
1914 else
|
|
|
1915 #endif
|
|
|
1916 {
|
|
|
1917 char const *s = NULL;
|
|
|
1918 putc_unlocked (':', stream);
|
|
|
1919 putc_unlocked (' ', stream);
|
|
|
1920 #if _LIBC || (HAVE_DECL_STRERROR_R && STRERROR_R_CHAR_P)
|
|
|
1921 s = __strerror_r (errnum, buf, sizeof buf);
|
|
|
1922 #elif HAVE_DECL_STRERROR_R
|
|
|
1923 if (__strerror_r (errnum, buf, sizeof buf) == 0)
|
|
|
1924 s = buf;
|
|
|
1925 #endif
|
|
|
1926 #if !_LIBC
|
|
|
1927 if (! s && ! (s = strerror (errnum)))
|
|
|
1928 s = dgettext (state->root_argp->argp_domain,
|
|
|
1929 "Unknown system error");
|
|
|
1930 #endif
|
|
|
1931 fputs (s, stream);
|
|
|
1932 }
|
|
|
1933 }
|
|
|
1934
|
|
|
1935 #ifdef USE_IN_LIBIO
|
|
|
1936 if (_IO_fwide (stream, 0) > 0)
|
|
|
1937 putwc_unlocked (L'\n', stream);
|
|
|
1938 else
|
|
|
1939 #endif
|
|
|
1940 putc_unlocked ('\n', stream);
|
|
|
1941
|
|
|
1942 #if _LIBC || (HAVE_FLOCKFILE && HAVE_FUNLOCKFILE)
|
|
|
1943 __funlockfile (stream);
|
|
|
1944 #endif
|
|
|
1945
|
|
|
1946 if (status && (!state || !(state->flags & ARGP_NO_EXIT)))
|
|
|
1947 exit (status);
|
|
|
1948 }
|
|
|
1949 }
|
|
|
1950 }
|
|
|
1951 #ifdef weak_alias
|
|
|
1952 weak_alias (__argp_failure, argp_failure)
|
|
|
1953 #endif
|
