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annotate lwlib/lw_cmdline.c @ 191:ddffceb3c331

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Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
author lost@l-w.ca
date Fri, 13 Jan 2012 21:28:34 -0700
parents 3e9057059a43
children 8ae2670377ca
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1 /*
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2 lw_cmdline.c
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3
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4 Copyright © 2010 William Astle
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5
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6 This file is part of LWTOOLS.
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7
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8 LWTOOLS is free software: you can redistribute it and/or modify it under the
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9 terms of the GNU General Public License as published by the Free Software
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10 Foundation, either version 3 of the License, or (at your option) any later
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11 version.
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12
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13 This program is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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16 more details.
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17
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18 You should have received a copy of the GNU General Public License along with
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19 this program. If not, see <http://www.gnu.org/licenses/>.
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20 */
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21
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22 #include <stdio.h>
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23 #include <stdlib.h>
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24 #include <string.h>
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25 #include <ctype.h>
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26
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27 #include "lw_alloc.h"
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28
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29 #define ___lw_cmdline_c_seen___
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30 #include "lw_cmdline.h"
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31
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32 #define DOCCOL 30
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33 #define LLEN 78
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34
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35 static struct lw_cmdline_options builtin[3] =
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36 {
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37 { "help", '?', 0, 0, "give this help list" },
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38 { "usage", 0, 0, 0, "give a short usage message" },
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39 { "version", 'V', 0, 0, "print program version" }
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40 };
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41
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42 static int cmpr(const void *e1, const void *e2)
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43 {
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44 struct lw_cmdline_options **o1, **o2;
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45 o1 = (struct lw_cmdline_options **)e1;
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46 o2 = (struct lw_cmdline_options **)e2;
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47
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48 return strcmp((*o1) -> name ? (*o1) -> name : "", (*o2) -> name ? (*o2) -> name : "");
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49 }
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50
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51 static int cmpr2(const void *e1, const void *e2)
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52 {
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53 struct lw_cmdline_options **o1, **o2;
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54 o1 = (struct lw_cmdline_options **)e1;
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55 o2 = (struct lw_cmdline_options **)e2;
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56
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57 if ((*o1) -> key < ((*o2) -> key))
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58 return -1;
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59 if ((*o1) -> key > ((*o2) -> key))
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60 return 1;
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61 return 0;
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62 }
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63
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64 static void lw_cmdline_usage(struct lw_cmdline_parser *parser, char *name)
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65 {
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66 struct lw_cmdline_options **slist, **llist;
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67 int nopt;
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68 int i;
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69 int t;
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70 int col;
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71
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72 for (nopt = 0; parser -> options[nopt].name || parser -> options[nopt].key || parser -> options[nopt].doc; nopt++)
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73 /* do nothing */ ;
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74
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75 slist = lw_alloc(sizeof(struct lw_cmdline_options *) * (nopt + 3));
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76 llist = lw_alloc(sizeof(struct lw_cmdline_options *) * (nopt + 3));
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77
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78 for (i = 0; i < nopt; i++)
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79 {
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80 slist[i] = &(parser -> options[i]);
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81 llist[i] = &(parser -> options[i]);
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82 }
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83
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84 /* now sort the two lists */
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85 qsort(slist, nopt, sizeof(struct lw_cmdline_options *), cmpr2);
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86 qsort(llist, nopt, sizeof(struct lw_cmdline_options *), cmpr);
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87
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88 /* now append the automatic options */
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89 slist[nopt] = &(builtin[0]);
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90 slist[nopt + 1] = &(builtin[1]);
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91 slist[nopt + 2] = &(builtin[2]);
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92
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93 llist[nopt] = &(builtin[0]);
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94 llist[nopt + 1] = &(builtin[1]);
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95 llist[nopt + 2] = &(builtin[2]);
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96
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97 /* now show the usage message */
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98 printf("Usage: %s", name);
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99
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100 col = 7 + strlen(name);
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101
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102 /* print short options that take no args */
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103 t = 0;
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104 for (i = 0; i < nopt + 3; i++)
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105 {
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106 if (slist[i]->key > 0x20 && slist[i]->key < 0x7f)
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107 {
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108 if (slist[i]->arg == NULL)
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109 {
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110 if (!t)
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111 {
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112 printf(" [-");
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113 t = 1;
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114 col += 3;
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115 }
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116 printf("%c", slist[i]->key);
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117 col++;
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118 }
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119 }
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120 }
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121 if (t)
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122 {
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123 col++;
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124 printf("]");
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125 }
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126
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127 /* print short options that take args */
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128 for (i = 0; i < nopt + 3; i++)
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129 {
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130 if (slist[i]->key > 0x20 && slist[i]->key < 0x7f && slist[i] -> arg)
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131 {
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132 if (slist[i]->flags & lw_cmdline_opt_optional)
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133 {
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134 t = 7 + strlen(slist[i] -> arg);
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135 if (col + t > LLEN)
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136 {
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137 printf("\n ");
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138 col = 7;
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139 }
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140 printf(" [-%c[%s]]", slist[i]->key, slist[i]->arg);
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141 col += t;
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142 }
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143 else
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144 {
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145 t = 6 + strlen(slist[i] -> arg);
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146 if (col + t > LLEN)
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147 {
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148 printf("\n ");
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149 col = 7;
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150 }
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151 printf(" [-%c %s]", slist[i]->key, slist[i]->arg);
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152 col += t;
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153 }
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154 }
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155 }
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156
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157 /* print long options */
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
158 for (i = 0; i < nopt + 3; i++)
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
159 {
191
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
160 if (!(llist[i]->name))
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
161 continue;
4
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
162 if (llist[i]->arg)
a4812d57ed13 Started implementing command line parsing in lwlib
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parents:
diff changeset
163 {
6
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
164 t = strlen(llist[i] -> name) + 6 + strlen(llist[i] -> arg);
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
165 if (llist[i] -> flags & lw_cmdline_opt_optional)
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
166 t += 2;
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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parents: 5
diff changeset
167 if (col + t > LLEN)
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
168 {
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
169 printf("\n ");
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
170 col = 7;
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
171 }
191
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
172 if (llist[i] -> flags & lw_cmdline_opt_doc)
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
173 {
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
174 printf(" [%s%s]", llist[i] -> name, llist[i] -> arg);
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
175 t = strlen(llist[i] -> name) + strlen(llist[i] -> arg) + 3;
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
176 }
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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parents: 105
diff changeset
177 else
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
178 {
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
179 printf(" [--%s%s=%s%s]",
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
180 llist[i] -> name,
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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181 (llist[i] -> flags & lw_cmdline_opt_optional) ? "[" : "",
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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182 llist[i] -> arg,
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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183 (llist[i] -> flags & lw_cmdline_opt_optional) ? "]" : "");
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
184 }
6
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
185 col += t;
4
a4812d57ed13 Started implementing command line parsing in lwlib
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186 }
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
187 else
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
188 {
6
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
189 t = strlen(llist[i] -> name) + 5;
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
190 if (col + t > LLEN)
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
191 {
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
192 printf("\n ");
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
193 col = 7;
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
194 }
191
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
195 if (llist[i] -> flags & lw_cmdline_opt_doc)
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
196 {
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
197 t -= 2;
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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198 printf(" [%s]", llist[i] -> name);
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
199 }
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
200 else
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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parents: 105
diff changeset
201 {
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
202 printf(" [--%s]", llist[i] -> name);
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
203 }
6
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
204 col += t;
4
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
205 }
a4812d57ed13 Started implementing command line parsing in lwlib
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parents:
diff changeset
206 }
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
207
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
208 /* print "non option" text */
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
209 if (parser -> args_doc)
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
210 {
6
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
211 if (col + strlen(parser -> args_doc) + 1 > LLEN)
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
212 {
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
213 printf("\n ");
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
214 }
4
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
215 printf(" %s", parser -> args_doc);
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
216 }
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
217 printf("\n");
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
218
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
219 /* clean up scratch lists */
a4812d57ed13 Started implementing command line parsing in lwlib
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220 lw_free(slist);
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
221 lw_free(llist);
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
222 }
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
223
5
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
224 static void lw_cmdline_help(struct lw_cmdline_parser *parser, char *name)
4
a4812d57ed13 Started implementing command line parsing in lwlib
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225 {
5
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
226 struct lw_cmdline_options **llist;
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
227 int nopt;
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
228 int i;
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
229 char *tstr;
6
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
230 int col = 0;
191
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
231 int noequ;
5
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
232
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
233 tstr = parser -> doc;
191
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
234 for (nopt = 0; parser -> options[nopt].name || parser -> options[nopt].key || parser -> options[nopt].doc; nopt++)
5
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
235 /* do nothing */ ;
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
236
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
237 llist = lw_alloc(sizeof(struct lw_cmdline_options *) * (nopt + 3));
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
238
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
239 for (i = 0; i < nopt; i++)
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
240 {
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
241 llist[i] = &(parser -> options[i]);
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
242 }
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
243
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
244 /* now sort the list */
6
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
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diff changeset
245 qsort(llist, nopt, sizeof(struct lw_cmdline_options *), cmpr);
5
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
246
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
247 /* now append the automatic options */
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
248 llist[nopt] = &(builtin[0]);
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
249 llist[nopt + 1] = &(builtin[1]);
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
250 llist[nopt + 2] = &(builtin[2]);
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
251
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
252 /* print brief usage */
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
253 printf("Usage: %s [OPTION...] %s\n", name, parser -> args_doc ? parser -> args_doc : "");
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
254 if (tstr)
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
255 {
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
256 while (*tstr && *tstr != '\v')
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
257 fputc(*tstr++, stdout);
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
258 if (*tstr)
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
259 tstr++;
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
260 }
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
261 fputc('\n', stdout);
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
262 fputc('\n', stdout);
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
263
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
264 /* display options - do it the naïve way for now */
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
265 for (i = 0; i < (nopt + 3); i++)
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
266 {
191
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
267 noequ = 0;
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
268 if (llist[i] -> flags & lw_cmdline_opt_doc)
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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parents: 105
diff changeset
269 {
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
270 col = strlen(llist[i] -> name) + 2;
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
271 printf(" %s", llist[i] -> name);
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
272 noequ = 1;
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
273 }
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
274 else if (llist[i] -> key > 0x20 && llist[i] -> key < 0x7F)
5
0e01d1343c02 Added basic --help routine to lw_cmdline
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diff changeset
275 {
191
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
276 printf(" -%c", llist[i] -> key);
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
277 col = 5;
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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parents: 105
diff changeset
278 if (llist[i] -> name)
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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parents: 105
diff changeset
279 {
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
280 col++;
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
281 fputc(',', stdout);
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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parents: 105
diff changeset
282 }
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
283 fputc(' ', stdout);
5
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
284 }
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
285 else
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
286 {
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
287 printf(" ");
191
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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parents: 105
diff changeset
288 col = 6;
5
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
289 }
191
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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parents: 105
diff changeset
290 if (llist[i] -> name && !(llist[i] -> flags & lw_cmdline_opt_doc))
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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parents: 105
diff changeset
291 {
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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parents: 105
diff changeset
292 col += 2 + strlen(llist[i] -> name);
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
293 printf("--%s", llist[i] -> name);
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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parents: 105
diff changeset
294 }
5
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
295 if (llist[i] -> arg)
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
296 {
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
297 if (llist[i] -> flags & lw_cmdline_opt_optional)
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
298 {
191
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
299 col++;
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
300 fputc('[', stdout);
5
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
301 }
191
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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parents: 105
diff changeset
302 if (noequ)
5
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
303 {
191
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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parents: 105
diff changeset
304 fputc('=', stdout);
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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parents: 105
diff changeset
305 col++;
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
lost@l-w.ca
parents: 105
diff changeset
306 }
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
lost@l-w.ca
parents: 105
diff changeset
307 printf("%s", llist[i] -> arg);
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
lost@l-w.ca
parents: 105
diff changeset
308 col += strlen(llist[i] -> arg);
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
lost@l-w.ca
parents: 105
diff changeset
309 if (llist[i] -> flags & lw_cmdline_opt_optional)
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
lost@l-w.ca
parents: 105
diff changeset
310 {
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
lost@l-w.ca
parents: 105
diff changeset
311 col++;
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
lost@l-w.ca
parents: 105
diff changeset
312 fputc(']', stdout);
5
0e01d1343c02 Added basic --help routine to lw_cmdline
lost@l-w.ca
parents: 4
diff changeset
313 }
0e01d1343c02 Added basic --help routine to lw_cmdline
lost@l-w.ca
parents: 4
diff changeset
314 }
0e01d1343c02 Added basic --help routine to lw_cmdline
lost@l-w.ca
parents: 4
diff changeset
315 if (llist[i] -> doc)
0e01d1343c02 Added basic --help routine to lw_cmdline
lost@l-w.ca
parents: 4
diff changeset
316 {
6
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
317 char *s = llist[i] -> doc;
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
318 char *s2;
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
319
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
320 while (*s && isspace(*s))
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
321 s++;
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
322
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
323 if (col > DOCCOL)
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
324 {
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
325 fputc('\n', stdout);
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
326 col = 0;
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
327 }
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
328 while (*s)
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
329 {
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
330 while (col < (DOCCOL - 1))
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
331 {
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
332 fputc(' ', stdout);
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
333 col++;
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
334 }
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
335 for (s2 = s; *s2 && !isspace(*s2); s2++)
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
336 /* do nothing */ ;
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
337 if ((col + (s2 - s) + 1) > LLEN && col >= DOCCOL)
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
338 {
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
339 /* next line */
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
340 fputc('\n', stdout);
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
341 col = 0;
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
342 continue;
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
343 }
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
344 col++;
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
345 fputc(' ', stdout);
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
346 while (s != s2)
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
347 {
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
348 fputc(*s, stdout);
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
349 col++;
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
350 s++;
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
351 }
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
352 while (*s && isspace(*s))
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
353 s++;
1e5e8ec406fb Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents: 5
diff changeset
354 }
5
0e01d1343c02 Added basic --help routine to lw_cmdline
lost@l-w.ca
parents: 4
diff changeset
355 }
0e01d1343c02 Added basic --help routine to lw_cmdline
lost@l-w.ca
parents: 4
diff changeset
356 fputc('\n', stdout);
0e01d1343c02 Added basic --help routine to lw_cmdline
lost@l-w.ca
parents: 4
diff changeset
357 }
0e01d1343c02 Added basic --help routine to lw_cmdline
lost@l-w.ca
parents: 4
diff changeset
358
0e01d1343c02 Added basic --help routine to lw_cmdline
lost@l-w.ca
parents: 4
diff changeset
359 printf("\nMandatory or optional arguments to long options are also mandatory or optional\nfor any corresponding short options.\n");
0e01d1343c02 Added basic --help routine to lw_cmdline
lost@l-w.ca
parents: 4
diff changeset
360
0e01d1343c02 Added basic --help routine to lw_cmdline
lost@l-w.ca
parents: 4
diff changeset
361 if (*tstr)
0e01d1343c02 Added basic --help routine to lw_cmdline
lost@l-w.ca
parents: 4
diff changeset
362 {
0e01d1343c02 Added basic --help routine to lw_cmdline
lost@l-w.ca
parents: 4
diff changeset
363 printf("\n%s\n", tstr);
0e01d1343c02 Added basic --help routine to lw_cmdline
lost@l-w.ca
parents: 4
diff changeset
364 }
0e01d1343c02 Added basic --help routine to lw_cmdline
lost@l-w.ca
parents: 4
diff changeset
365
0e01d1343c02 Added basic --help routine to lw_cmdline
lost@l-w.ca
parents: 4
diff changeset
366 /* clean up scratch lists */
0e01d1343c02 Added basic --help routine to lw_cmdline
lost@l-w.ca
parents: 4
diff changeset
367 lw_free(llist);
4
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
368 }
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
369
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
370 int lw_cmdline_parse(struct lw_cmdline_parser *parser, int argc, char **argv, unsigned flags, int *arg_index, void *input)
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
371 {
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
372 int i, j, r;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
373 int firstarg;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
374 int nextarg;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
375 char *tstr;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
376 int cch;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
377
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
378 /* first, permute the argv array so that all option arguments are at the start */
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
379 for (i = 1, firstarg = 1; i < argc; i++)
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
380 {
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
381 if (argv[i][0] == '-' && argv[i][1])
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
382 {
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
383 /* have an option arg */
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
384 if (firstarg == i)
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
385 {
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
386 firstarg++;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
387 continue;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
388 }
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
389 tstr = argv[i];
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
390 for (j = i; j > firstarg; j--)
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
391 {
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
392 argv[j] = argv[j - 1];
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
393 }
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
394 argv[firstarg] = tstr;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
395 firstarg++;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
396 if (argv[firstarg - 1][1] == '-' && argv[firstarg - 1][2] == 0)
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
397 break;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
398 }
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
399 }
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
400
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
401 /* now start parsing options */
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
402 nextarg = firstarg;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
403 i = 1;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
404 cch = 0;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
405 while (i < firstarg)
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
406 {
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
407 if (cch > 0 && argv[i][cch] == 0)
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
408 {
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
409 i++;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
410 cch = 0;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
411 continue;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
412 }
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
413
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
414 if (cch > 0)
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
415 goto shortopt;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
416
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
417 /* skip the "--" option */
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
418 if (argv[i][1] == '-' && argv[i][2] == 0)
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
419 break;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
420
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
421 if (argv[i][1] == '-')
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
422 {
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
423 goto longopt;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
424 }
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
425
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
426 cch = 1;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
427 shortopt:
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
428 /* handle a short option here */
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
429
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
430 /* automatic options */
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
431 if (argv[i][cch] == '?')
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
432 goto do_help;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
433 if (argv[i][cch] == 'V')
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
434 goto do_version;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
435 /* look up key */
191
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
lost@l-w.ca
parents: 105
diff changeset
436 for (j = 0; parser -> options[j].name || parser -> options[j].key || parser -> options[j].doc; j++)
4
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
437 if (parser -> options[j].key == argv[i][cch])
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
438 break;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
439 cch++;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
440 tstr = argv[i] + cch;
105
3e9057059a43 Even more command line parser fixing
lost@l-w.ca
parents: 104
diff changeset
441 if (*tstr == 0)
3e9057059a43 Even more command line parser fixing
lost@l-w.ca
parents: 104
diff changeset
442 tstr = NULL;
3e9057059a43 Even more command line parser fixing
lost@l-w.ca
parents: 104
diff changeset
443 if (!tstr && (parser -> options[j].flags & lw_cmdline_opt_optional) == 0)
4
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
444 {
103
8b0be0fc42cf Fixed arg handling for short args in command line option parser - optional args for short opts should now work and options no longer need a space between option character and argument
lost@l-w.ca
parents: 54
diff changeset
445 /* only consume the next arg if the argument is optional */
4
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
446 if (nextarg < argc)
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
447 tstr = argv[nextarg];
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
448 else
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
449 tstr = NULL;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
450 }
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
451 goto common;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
452
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
453 longopt:
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
454 if (strcmp(argv[i], "--help") == 0)
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
455 goto do_help;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
456 if (strcmp(argv[i], "--usage") == 0)
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
457 goto do_usage;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
458 if (strcmp(argv[i], "--version") == 0)
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
459 goto do_version;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
460 /* look up name */
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
461
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
462 for (j = 2; argv[i][j] && argv[i][j] != '='; j++)
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
463 /* do nothing */ ;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
464 tstr = lw_alloc(j - 1);
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
465 strncpy(tstr, argv[i] + 2, j - 2);
52
51c840679a0e Fixed off by one bug parsing long options
lost@l-w.ca
parents: 37
diff changeset
466 tstr[j - 2] = 0;
4
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
467 if (argv[i][j] == '=')
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
468 j++;
a4812d57ed13 Started implementing command line parsing in lwlib
lost@l-w.ca
parents:
diff changeset
469 cch = j;
191
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
lost@l-w.ca
parents: 105
diff changeset
470 for (j = 0; parser -> options[j].name || parser -> options[j].key || parser -> options[j].doc; j++)
4
a4812d57ed13 Started implementing command line parsing in lwlib
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471 {
191
ddffceb3c331 Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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diff changeset
472 if (parser -> options[j].name && strcmp(parser -> options[j].name, tstr) == 0)
4
a4812d57ed13 Started implementing command line parsing in lwlib
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473 break;
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
474 }
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
475 lw_free(tstr);
a4812d57ed13 Started implementing command line parsing in lwlib
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476 tstr = argv[i] + cch;
105
3e9057059a43 Even more command line parser fixing
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diff changeset
477 if (*tstr == 0)
3e9057059a43 Even more command line parser fixing
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diff changeset
478 tstr = NULL;
4
a4812d57ed13 Started implementing command line parsing in lwlib
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479 cch = 0;
37
a5d4693483af Fix hang while parsing long options
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diff changeset
480 i++;
4
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
481
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
482 common:
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
483 /* j will be the offset into the option table when we get here */
a4812d57ed13 Started implementing command line parsing in lwlib
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484 /* cch will be zero and tstr will point to the arg if it's a long option */
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
485 /* cch will be > 0 and tstr points to the theoretical option, either within */
a4812d57ed13 Started implementing command line parsing in lwlib
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486 /* this string or "nextarg" */
a4812d57ed13 Started implementing command line parsing in lwlib
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487 if (parser -> options[j].name == NULL)
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
488 {
103
8b0be0fc42cf Fixed arg handling for short args in command line option parser - optional args for short opts should now work and options no longer need a space between option character and argument
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diff changeset
489 if (cch)
8b0be0fc42cf Fixed arg handling for short args in command line option parser - optional args for short opts should now work and options no longer need a space between option character and argument
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490 fprintf(stderr, "Unknown option '%c'. See %s --usage.\n", argv[i][cch - 1], argv[0]);
8b0be0fc42cf Fixed arg handling for short args in command line option parser - optional args for short opts should now work and options no longer need a space between option character and argument
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diff changeset
491 else
8b0be0fc42cf Fixed arg handling for short args in command line option parser - optional args for short opts should now work and options no longer need a space between option character and argument
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diff changeset
492 fprintf(stderr, "Unknown option '%s'. See %s --usage.\n", argv[i - 1], argv[0]);
4
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
493 exit(1);
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
494 }
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
495 if (parser -> options[j].arg)
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
496 {
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
497 if (tstr && cch && argv[i][cch] == 0)
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
498 nextarg++;
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
499
105
3e9057059a43 Even more command line parser fixing
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parents: 104
diff changeset
500 //if (!*tstr)
3e9057059a43 Even more command line parser fixing
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diff changeset
501 // tstr = NULL;
4
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
502
103
8b0be0fc42cf Fixed arg handling for short args in command line option parser - optional args for short opts should now work and options no longer need a space between option character and argument
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diff changeset
503 /* move on to next argument if we have an arg specified */
8b0be0fc42cf Fixed arg handling for short args in command line option parser - optional args for short opts should now work and options no longer need a space between option character and argument
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diff changeset
504 if (tstr && cch && argv[i][cch] != 0)
104
bc82df7f6bbe More command line args fixing
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parents: 103
diff changeset
505 {
103
8b0be0fc42cf Fixed arg handling for short args in command line option parser - optional args for short opts should now work and options no longer need a space between option character and argument
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diff changeset
506 i++;
104
bc82df7f6bbe More command line args fixing
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parents: 103
diff changeset
507 cch = 0;
bc82df7f6bbe More command line args fixing
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parents: 103
diff changeset
508 }
103
8b0be0fc42cf Fixed arg handling for short args in command line option parser - optional args for short opts should now work and options no longer need a space between option character and argument
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parents: 54
diff changeset
509
4
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
510 if (!tstr && (parser -> options[j].flags & lw_cmdline_opt_optional) == 0)
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
511 {
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
512 fprintf(stderr, "Option %s requires argument.\n", parser -> options[j].name);
a4812d57ed13 Started implementing command line parsing in lwlib
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513 }
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
514 }
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
515 r = (*(parser -> parser))(parser -> options[j].key, tstr, input);
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
516 if (r != 0)
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
517 return r;
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
518 }
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
519 /* handle non-option args */
a4812d57ed13 Started implementing command line parsing in lwlib
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parents:
diff changeset
520 if (arg_index)
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
521 *arg_index = nextarg;
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
522 for (i = nextarg; i < argc; i++)
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
523 {
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
524 r = (*(parser -> parser))(lw_cmdline_key_arg, argv[i], input);
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
525 if (r != 0)
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
526 return r;
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
527 }
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
528 r = (*(parser -> parser))(lw_cmdline_key_end, NULL, input);
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
529 return r;
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
530
a4812d57ed13 Started implementing command line parsing in lwlib
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parents:
diff changeset
531 do_help:
5
0e01d1343c02 Added basic --help routine to lw_cmdline
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parents: 4
diff changeset
532 lw_cmdline_help(parser, argv[0]);
4
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
533 exit(0);
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
534
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
535 do_version:
a4812d57ed13 Started implementing command line parsing in lwlib
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parents:
diff changeset
536 printf("%s\n", parser -> program_version);
a4812d57ed13 Started implementing command line parsing in lwlib
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parents:
diff changeset
537 exit(0);
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
538
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
539 do_usage:
a4812d57ed13 Started implementing command line parsing in lwlib
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parents:
diff changeset
540 lw_cmdline_usage(parser, argv[0]);
a4812d57ed13 Started implementing command line parsing in lwlib
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parents:
diff changeset
541 exit(0);
a4812d57ed13 Started implementing command line parsing in lwlib
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diff changeset
542 }