1 | /** \file popt/popt.h
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2 | * \ingroup popt
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3 | */
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4 |
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5 | /* (C) 1998-2000 Red Hat, Inc. -- Licensing details are in the COPYING
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6 | file accompanying popt source distributions, available from
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7 | ftp://ftp.rpm.org/pub/rpm/dist. */
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8 |
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9 | #ifndef H_POPT
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10 | #define H_POPT
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11 |
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12 | #include <stdio.h> /* for FILE * */
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13 |
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14 | #define POPT_OPTION_DEPTH 10
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15 |
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16 | /** \ingroup popt
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17 | * \name Arg type identifiers
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18 | */
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19 | /*@{*/
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20 | #define POPT_ARG_NONE 0 /*!< no arg */
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21 | #define POPT_ARG_STRING 1 /*!< arg will be saved as string */
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22 | #define POPT_ARG_INT 2 /*!< arg will be converted to int */
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23 | #define POPT_ARG_LONG 3 /*!< arg will be converted to long */
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24 | #define POPT_ARG_INCLUDE_TABLE 4 /*!< arg points to table */
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25 | #define POPT_ARG_CALLBACK 5 /*!< table-wide callback... must be
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26 | set first in table; arg points
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27 | to callback, descrip points to
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28 | callback data to pass */
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29 | #define POPT_ARG_INTL_DOMAIN 6 /*!< set the translation domain
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30 | for this table and any
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31 | included tables; arg points
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32 | to the domain string */
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33 | #define POPT_ARG_VAL 7 /*!< arg should take value val */
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34 | #define POPT_ARG_FLOAT 8 /*!< arg will be converted to float */
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35 | #define POPT_ARG_DOUBLE 9 /*!< arg will be converted to double */
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36 |
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37 | #define POPT_ARG_MASK 0x0000FFFF
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38 | /*@}*/
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39 |
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40 | /** \ingroup popt
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41 | * \name Arg modifiers
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42 | */
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43 | /*@{*/
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44 | #define POPT_ARGFLAG_ONEDASH 0x80000000 /*!< allow -longoption */
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45 | #define POPT_ARGFLAG_DOC_HIDDEN 0x40000000 /*!< don't show in help/usage */
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46 | #define POPT_ARGFLAG_STRIP 0x20000000 /*!< strip this arg from argv(only applies to long args) */
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47 | #define POPT_ARGFLAG_OPTIONAL 0x10000000 /*!< arg may be missing */
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48 |
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49 | #define POPT_ARGFLAG_OR 0x08000000 /*!< arg will be or'ed */
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50 | #define POPT_ARGFLAG_NOR 0x09000000 /*!< arg will be nor'ed */
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51 | #define POPT_ARGFLAG_AND 0x04000000 /*!< arg will be and'ed */
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52 | #define POPT_ARGFLAG_NAND 0x05000000 /*!< arg will be nand'ed */
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53 | #define POPT_ARGFLAG_XOR 0x02000000 /*!< arg will be xor'ed */
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54 | #define POPT_ARGFLAG_NOT 0x01000000 /*!< arg will be negated */
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55 | #define POPT_ARGFLAG_LOGICALOPS \
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56 | (POPT_ARGFLAG_OR|POPT_ARGFLAG_AND|POPT_ARGFLAG_XOR)
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57 |
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58 | #define POPT_BIT_SET (POPT_ARG_VAL|POPT_ARGFLAG_OR)
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59 | /*!< set arg bit(s) */
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60 | #define POPT_BIT_CLR (POPT_ARG_VAL|POPT_ARGFLAG_NAND)
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61 | /*!< clear arg bit(s) */
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62 |
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63 | #define POPT_ARGFLAG_SHOW_DEFAULT 0x00800000 /*!< show default value in --help */
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64 |
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65 | /*@}*/
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66 |
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67 | /** \ingroup popt
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68 | * \name Callback modifiers
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69 | */
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70 | /*@{*/
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71 | #define POPT_CBFLAG_PRE 0x80000000 /*!< call the callback before parse */
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72 | #define POPT_CBFLAG_POST 0x40000000 /*!< call the callback after parse */
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73 | #define POPT_CBFLAG_INC_DATA 0x20000000 /*!< use data from the include line,
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74 | not the subtable */
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75 | #define POPT_CBFLAG_SKIPOPTION 0x10000000 /*!< don't callback with option */
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76 | #define POPT_CBFLAG_CONTINUE 0x08000000 /*!< continue callbacks with option */
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77 | /*@}*/
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78 |
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79 | /** \ingroup popt
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80 | * \name Error return values
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81 | */
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82 | /*@{*/
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83 | #define POPT_ERROR_NOARG -10 /*!< missing argument */
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84 | #define POPT_ERROR_BADOPT -11 /*!< unknown option */
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85 | #define POPT_ERROR_OPTSTOODEEP -13 /*!< aliases nested too deeply */
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86 | #define POPT_ERROR_BADQUOTE -15 /*!< error in parameter quoting */
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87 | #define POPT_ERROR_ERRNO -16 /*!< errno set, use strerror(errno) */
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88 | #define POPT_ERROR_BADNUMBER -17 /*!< invalid numeric value */
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89 | #define POPT_ERROR_OVERFLOW -18 /*!< number too large or too small */
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90 | #define POPT_ERROR_BADOPERATION -19 /*!< mutually exclusive logical operations requested */
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91 | #define POPT_ERROR_NULLARG -20 /*!< opt->arg should not be NULL */
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92 | #define POPT_ERROR_MALLOC -21 /*!< memory allocation failed */
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93 | /*@}*/
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94 |
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95 | /** \ingroup popt
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96 | * \name poptBadOption() flags
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97 | */
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98 | /*@{*/
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99 | #define POPT_BADOPTION_NOALIAS (1 << 0) /*!< don't go into an alias */
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100 | /*@}*/
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101 |
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102 | /** \ingroup popt
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103 | * \name poptGetContext() flags
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104 | */
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105 | /*@{*/
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106 | #define POPT_CONTEXT_NO_EXEC (1 << 0) /*!< ignore exec expansions */
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107 | #define POPT_CONTEXT_KEEP_FIRST (1 << 1) /*!< pay attention to argv[0] */
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108 | #define POPT_CONTEXT_POSIXMEHARDER (1 << 2) /*!< options can't follow args */
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109 | #define POPT_CONTEXT_ARG_OPTS (1 << 4) /*!< return args as options with value 0 */
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110 | /*@}*/
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111 |
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112 | /** \ingroup popt
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113 | */
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114 | struct poptOption {
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115 | /*@observer@*/ /*@null@*/
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116 | const char * longName; /*!< may be NULL */
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117 | char shortName; /*!< may be '\0' */
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118 | int argInfo;
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119 | /*@shared@*/ /*@null@*/
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120 | void * arg; /*!< depends on argInfo */
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121 | int val; /*!< 0 means don't return, just update flag */
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122 | /*@observer@*/ /*@null@*/
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123 | const char * descrip; /*!< description for autohelp -- may be NULL */
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124 | /*@observer@*/ /*@null@*/
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125 | const char * argDescrip; /*!< argument description for autohelp */
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126 | };
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127 |
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128 | /** \ingroup popt
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129 | * A popt alias argument for poptAddAlias().
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130 | */
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131 | struct poptAlias {
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132 | /*@owned@*/ /*@null@*/
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133 | const char * longName; /*!< may be NULL */
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134 | char shortName; /*!< may be '\0' */
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135 | int argc;
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136 | /*@owned@*/
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137 | const char ** argv; /*!< must be free()able */
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138 | };
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139 |
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140 | /** \ingroup popt
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141 | * A popt alias or exec argument for poptAddItem().
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142 | */
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143 | /*@-exporttype@*/
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144 | typedef struct poptItem_s {
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145 | struct poptOption option; /*!< alias/exec name(s) and description. */
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146 | int argc; /*!< (alias) no. of args. */
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147 | /*@owned@*/
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148 | const char ** argv; /*!< (alias) args, must be free()able. */
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149 | } * poptItem;
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150 | /*@=exporttype@*/
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151 |
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152 | /** \ingroup popt
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153 | * \name Auto-generated help/usage
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154 | */
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155 | /*@{*/
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156 |
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157 | /**
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158 | * Empty table marker to enable displaying popt alias/exec options.
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159 | */
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160 | /*@-exportvar@*/
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161 | /*@unchecked@*/ /*@observer@*/
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162 | extern struct poptOption poptAliasOptions[];
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163 | /*@=exportvar@*/
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164 | #define POPT_AUTOALIAS { NULL, '\0', POPT_ARG_INCLUDE_TABLE, poptAliasOptions, \
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165 | 0, "Options implemented via popt alias/exec:", NULL },
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166 |
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167 | /**
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168 | * Auto help table options.
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169 | */
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170 | /*@-exportvar@*/
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171 | /*@unchecked@*/ /*@observer@*/
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172 | extern struct poptOption poptHelpOptions[];
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173 | /*@=exportvar@*/
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174 | #define POPT_AUTOHELP { NULL, '\0', POPT_ARG_INCLUDE_TABLE, poptHelpOptions, \
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175 | 0, "Help options:", NULL },
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176 |
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177 | #define POPT_TABLEEND { NULL, '\0', 0, 0, 0, NULL, NULL }
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178 | /*@}*/
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179 |
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180 | /** \ingroup popt
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181 | */
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182 | /*@-exporttype@*/
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183 | typedef /*@abstract@*/ struct poptContext_s * poptContext;
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184 | /*@=exporttype@*/
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185 |
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186 | /** \ingroup popt
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187 | */
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188 | #ifndef __cplusplus
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189 | /*@-exporttype -typeuse@*/
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190 | typedef struct poptOption * poptOption;
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191 | /*@=exporttype =typeuse@*/
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192 | #endif
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193 |
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194 | /*@-exportconst@*/
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195 | enum poptCallbackReason {
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196 | POPT_CALLBACK_REASON_PRE = 0,
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197 | POPT_CALLBACK_REASON_POST = 1,
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198 | POPT_CALLBACK_REASON_OPTION = 2
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199 | };
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200 | /*@=exportconst@*/
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201 |
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202 | #ifdef __cplusplus
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203 | extern "C" {
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204 | #endif
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205 | /*@-type@*/
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206 |
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207 | /** \ingroup popt
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208 | * Table callback prototype.
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209 | * @param con context
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210 | * @param reason reason for callback
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211 | * @param opt option that triggered callback
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212 | * @param arg @todo Document.
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213 | * @param data @todo Document.
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214 | */
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215 | typedef void (*poptCallbackType) (poptContext con,
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216 | enum poptCallbackReason reason,
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217 | /*@null@*/ const struct poptOption * opt,
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218 | /*@null@*/ const char * arg,
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219 | /*@null@*/ const void * data)
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220 | /*@*/;
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221 |
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222 | /** \ingroup popt
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223 | * Initialize popt context.
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224 | * @param name context name (usually argv[0] program name)
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225 | * @param argc no. of arguments
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226 | * @param argv argument array
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227 | * @param options address of popt option table
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228 | * @param flags or'd POPT_CONTEXT_* bits
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229 | * @return initialized popt context
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230 | */
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231 | /*@only@*/ /*@null@*/ poptContext poptGetContext(
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232 | /*@dependent@*/ /*@keep@*/ const char * name,
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233 | int argc, /*@dependent@*/ /*@keep@*/ const char ** argv,
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234 | /*@dependent@*/ /*@keep@*/ const struct poptOption * options,
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235 | int flags)
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236 | /*@*/;
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237 |
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238 | /** \ingroup popt
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239 | * Reinitialize popt context.
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240 | * @param con context
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241 | */
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242 | /*@unused@*/
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243 | void poptResetContext(/*@null@*/poptContext con)
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244 | /*@modifies con @*/;
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245 |
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246 | /** \ingroup popt
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247 | * Return value of next option found.
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248 | * @param con context
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249 | * @return next option val, -1 on last item, POPT_ERROR_* on error
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250 | */
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251 | int poptGetNextOpt(/*@null@*/poptContext con)
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252 | /*@globals fileSystem, internalState @*/
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253 | /*@modifies con, fileSystem, internalState @*/;
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254 |
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255 | /** \ingroup popt
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256 | * Return next option argument (if any).
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257 | * @param con context
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258 | * @return option argument, NULL if no argument is available
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259 | */
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260 | /*@observer@*/ /*@null@*/ const char * poptGetOptArg(/*@null@*/poptContext con)
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261 | /*@modifies con @*/;
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262 |
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263 | /** \ingroup popt
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264 | * Return next argument.
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265 | * @param con context
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266 | * @return next argument, NULL if no argument is available
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267 | */
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268 | /*@observer@*/ /*@null@*/ const char * poptGetArg(/*@null@*/poptContext con)
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269 | /*@modifies con @*/;
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270 |
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271 | /** \ingroup popt
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272 | * Peek at current argument.
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273 | * @param con context
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274 | * @return current argument, NULL if no argument is available
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275 | */
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276 | /*@observer@*/ /*@null@*/ const char * poptPeekArg(/*@null@*/poptContext con)
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277 | /*@*/;
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278 |
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279 | /** \ingroup popt
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280 | * Return remaining arguments.
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281 | * @param con context
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282 | * @return argument array, NULL terminated
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283 | */
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284 | /*@observer@*/ /*@null@*/ const char ** poptGetArgs(/*@null@*/poptContext con)
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285 | /*@modifies con @*/;
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286 |
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287 | /** \ingroup popt
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288 | * Return the option which caused the most recent error.
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289 | * @param con context
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290 | * @param flags
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291 | * @return offending option
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292 | */
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293 | /*@observer@*/ const char * poptBadOption(/*@null@*/poptContext con, int flags)
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294 | /*@*/;
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295 |
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296 | /** \ingroup popt
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297 | * Destroy context.
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298 | * @param con context
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299 | * @return NULL always
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300 | */
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301 | /*@null@*/ poptContext poptFreeContext( /*@only@*/ /*@null@*/ poptContext con)
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302 | /*@modifies con @*/;
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303 |
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304 | /** \ingroup popt
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305 | * Add arguments to context.
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306 | * @param con context
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307 | * @param argv argument array, NULL terminated
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308 | * @return 0 on success, POPT_ERROR_OPTSTOODEEP on failure
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309 | */
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310 | int poptStuffArgs(poptContext con, /*@keep@*/ const char ** argv)
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311 | /*@modifies con @*/;
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312 |
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313 | /** \ingroup popt
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314 | * Add alias to context.
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315 | * @todo Pass alias by reference, not value.
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316 | * @deprecated Use poptAddItem instead.
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317 | * @param con context
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318 | * @param alias alias to add
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319 | * @param flags (unused)
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320 | * @return 0 on success
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321 | */
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322 | /*@unused@*/
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323 | int poptAddAlias(poptContext con, struct poptAlias alias, int flags)
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324 | /*@modifies con @*/;
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325 |
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326 | /** \ingroup popt
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327 | * Add alias/exec item to context.
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328 | * @param con context
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329 | * @param newItem alias/exec item to add
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330 | * @param flags 0 for alias, 1 for exec
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331 | * @return 0 on success
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332 | */
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333 | int poptAddItem(poptContext con, poptItem newItem, int flags)
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334 | /*@modifies con @*/;
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335 |
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336 | /** \ingroup popt
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337 | * Read configuration file.
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338 | * @param con context
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339 | * @param fn file name to read
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340 | * @return 0 on success, POPT_ERROR_ERRNO on failure
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341 | */
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342 | int poptReadConfigFile(poptContext con, const char * fn)
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343 | /*@globals fileSystem, internalState @*/
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344 | /*@modifies con->execs, con->numExecs,
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345 | fileSystem, internalState @*/;
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346 |
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347 | /** \ingroup popt
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348 | * Read default configuration from /etc/popt and $HOME/.popt.
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349 | * @param con context
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350 | * @param useEnv (unused)
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351 | * @return 0 on success, POPT_ERROR_ERRNO on failure
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352 | */
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353 | int poptReadDefaultConfig(poptContext con, /*@unused@*/ int useEnv)
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354 | /*@globals fileSystem, internalState @*/
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355 | /*@modifies con->execs, con->numExecs,
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356 | fileSystem, internalState @*/;
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357 |
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358 | /** \ingroup popt
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359 | * Duplicate an argument array.
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360 | * @note: The argument array is malloc'd as a single area, so only argv must
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361 | * be free'd.
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362 | *
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363 | * @param argc no. of arguments
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364 | * @param argv argument array
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365 | * @retval argcPtr address of returned no. of arguments
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366 | * @retval argvPtr address of returned argument array
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367 | * @return 0 on success, POPT_ERROR_NOARG on failure
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368 | */
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369 | int poptDupArgv(int argc, /*@null@*/ const char **argv,
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370 | /*@null@*/ /*@out@*/ int * argcPtr,
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371 | /*@null@*/ /*@out@*/ const char *** argvPtr)
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372 | /*@modifies *argcPtr, *argvPtr @*/;
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373 |
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374 | /** \ingroup popt
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375 | * Parse a string into an argument array.
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376 | * The parse allows ', ", and \ quoting, but ' is treated the same as " and
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377 | * both may include \ quotes.
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378 | * @note: The argument array is malloc'd as a single area, so only argv must
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379 | * be free'd.
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380 | *
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381 | * @param s string to parse
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382 | * @retval argcPtr address of returned no. of arguments
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383 | * @retval argvPtr address of returned argument array
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384 | */
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385 | int poptParseArgvString(const char * s,
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386 | /*@out@*/ int * argcPtr, /*@out@*/ const char *** argvPtr)
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387 | /*@modifies *argcPtr, *argvPtr @*/;
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388 |
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389 | /** \ingroup popt
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390 | * Parses an input configuration file and returns an string that is a
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391 | * command line. For use with popt. You must free the return value when done.
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392 | *
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393 | * Given the file:
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394 | \verbatim
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395 | # this line is ignored
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396 | # this one too
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397 | aaa
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398 | bbb
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399 | ccc
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400 | bla=bla
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401 |
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402 | this_is = fdsafdas
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403 | bad_line=
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404 | reall bad line
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405 | reall bad line = again
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406 | 5555= 55555
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407 | test = with lots of spaces
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408 | \endverbatim
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409 | *
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410 | * The result is:
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411 | \verbatim
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412 | --aaa --bbb --ccc --bla="bla" --this_is="fdsafdas" --5555="55555" --test="with lots of spaces"
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413 | \endverbatim
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414 | *
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415 | * Passing this to poptParseArgvString() yields an argv of:
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416 | \verbatim
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417 | '--aaa'
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418 | '--bbb'
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419 | '--ccc'
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420 | '--bla=bla'
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421 | '--this_is=fdsafdas'
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422 | '--5555=55555'
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423 | '--test=with lots of spaces'
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424 | \endverbatim
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425 | *
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426 | * @bug NULL is returned if file line is too long.
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427 | * @bug Silently ignores invalid lines.
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428 | *
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429 | * @param fp file handle to read
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430 | * @param *argstrp return string of options (malloc'd)
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431 | * @param flags unused
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432 | * @return 0 on success
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433 | * @see poptParseArgvString
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434 | */
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435 | /*@-fcnuse@*/
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436 | int poptConfigFileToString(FILE *fp, /*@out@*/ char ** argstrp, int flags)
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437 | /*@globals fileSystem @*/
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438 | /*@modifies *fp, *argstrp, fileSystem @*/;
|
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439 | /*@=fcnuse@*/
|
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440 |
|
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441 | /** \ingroup popt
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442 | * Return formatted error string for popt failure.
|
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443 | * @param error popt error
|
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444 | * @return error string
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445 | */
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446 | /*@observer@*/ const char* poptStrerror(const int error)
|
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447 | /*@*/;
|
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448 |
|
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449 | /** \ingroup popt
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450 | * Limit search for executables.
|
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451 | * @param con context
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452 | * @param path single path to search for executables
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453 | * @param allowAbsolute absolute paths only?
|
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454 | */
|
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455 | void poptSetExecPath(poptContext con, const char * path, int allowAbsolute)
|
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456 | /*@modifies con @*/;
|
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457 |
|
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458 | /** \ingroup popt
|
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459 | * Print detailed description of options.
|
---|
460 | * @param con context
|
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461 | * @param fp ouput file handle
|
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462 | * @param flags (unused)
|
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463 | */
|
---|
464 | void poptPrintHelp(poptContext con, FILE * fp, /*@unused@*/ int flags)
|
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465 | /*@globals fileSystem @*/
|
---|
466 | /*@modifies *fp, fileSystem @*/;
|
---|
467 |
|
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468 | /** \ingroup popt
|
---|
469 | * Print terse description of options.
|
---|
470 | * @param con context
|
---|
471 | * @param fp ouput file handle
|
---|
472 | * @param flags (unused)
|
---|
473 | */
|
---|
474 | void poptPrintUsage(poptContext con, FILE * fp, /*@unused@*/ int flags)
|
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475 | /*@globals fileSystem @*/
|
---|
476 | /*@modifies *fp, fileSystem @*/;
|
---|
477 |
|
---|
478 | /** \ingroup popt
|
---|
479 | * Provide text to replace default "[OPTION...]" in help/usage output.
|
---|
480 | * @param con context
|
---|
481 | * @param text replacement text
|
---|
482 | */
|
---|
483 | /*@-fcnuse@*/
|
---|
484 | void poptSetOtherOptionHelp(poptContext con, const char * text)
|
---|
485 | /*@modifies con @*/;
|
---|
486 | /*@=fcnuse@*/
|
---|
487 |
|
---|
488 | /** \ingroup popt
|
---|
489 | * Return argv[0] from context.
|
---|
490 | * @param con context
|
---|
491 | * @return argv[0]
|
---|
492 | */
|
---|
493 | /*@-fcnuse@*/
|
---|
494 | /*@observer@*/ const char * poptGetInvocationName(poptContext con)
|
---|
495 | /*@*/;
|
---|
496 | /*@=fcnuse@*/
|
---|
497 |
|
---|
498 | /** \ingroup popt
|
---|
499 | * Shuffle argv pointers to remove stripped args, returns new argc.
|
---|
500 | * @param con context
|
---|
501 | * @param argc no. of args
|
---|
502 | * @param argv arg vector
|
---|
503 | * @return new argc
|
---|
504 | */
|
---|
505 | /*@-fcnuse@*/
|
---|
506 | int poptStrippedArgv(poptContext con, int argc, char ** argv)
|
---|
507 | /*@modifies *argv @*/;
|
---|
508 | /*@=fcnuse@*/
|
---|
509 |
|
---|
510 | /**
|
---|
511 | * Save a long, performing logical operation with value.
|
---|
512 | * @warning Alignment check may be too strict on certain platorms.
|
---|
513 | * @param arg integer pointer, aligned on int boundary.
|
---|
514 | * @param argInfo logical operation (see POPT_ARGFLAG_*)
|
---|
515 | * @param aLong value to use
|
---|
516 | * @return 0 on success, POPT_ERROR_NULLARG/POPT_ERROR_BADOPERATION
|
---|
517 | */
|
---|
518 | /*@-incondefs@*/
|
---|
519 | /*@unused@*/
|
---|
520 | int poptSaveLong(/*@null@*/ long * arg, int argInfo, long aLong)
|
---|
521 | /*@modifies *arg @*/
|
---|
522 | /*@requires maxSet(arg) >= 0 /\ maxRead(arg) == 0 @*/;
|
---|
523 | /*@=incondefs@*/
|
---|
524 |
|
---|
525 | /**
|
---|
526 | * Save an integer, performing logical operation with value.
|
---|
527 | * @warning Alignment check may be too strict on certain platorms.
|
---|
528 | * @param arg integer pointer, aligned on int boundary.
|
---|
529 | * @param argInfo logical operation (see POPT_ARGFLAG_*)
|
---|
530 | * @param aLong value to use
|
---|
531 | * @return 0 on success, POPT_ERROR_NULLARG/POPT_ERROR_BADOPERATION
|
---|
532 | */
|
---|
533 | /*@-incondefs@*/
|
---|
534 | /*@unused@*/
|
---|
535 | int poptSaveInt(/*@null@*/ int * arg, int argInfo, long aLong)
|
---|
536 | /*@modifies *arg @*/
|
---|
537 | /*@requires maxSet(arg) >= 0 /\ maxRead(arg) == 0 @*/;
|
---|
538 | /*@=incondefs@*/
|
---|
539 |
|
---|
540 | /*@=type@*/
|
---|
541 | #ifdef __cplusplus
|
---|
542 | }
|
---|
543 | #endif
|
---|
544 |
|
---|
545 | #endif
|
---|