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annotate lwlib/lw_cmdline.c @ 544:f12c767c363e
Fix typo in manual.
I wonder just what "pneumonics" are....
| author | William Astle <lost@l-w.ca> |
|---|---|
| date | Mon, 14 Nov 2022 18:01:32 -0700 |
| parents | b138b4005125 |
| children |
| rev | line source |
|---|---|
| 4 | 1 /* |
| 2 lw_cmdline.c | |
| 3 | |
| 4 Copyright © 2010 William Astle | |
| 5 | |
| 6 This file is part of LWTOOLS. | |
| 7 | |
| 8 LWTOOLS is free software: you can redistribute it and/or modify it under the | |
| 9 terms of the GNU General Public License as published by the Free Software | |
| 10 Foundation, either version 3 of the License, or (at your option) any later | |
| 11 version. | |
| 12 | |
| 13 This program is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 16 more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License along with | |
| 19 this program. If not, see <http://www.gnu.org/licenses/>. | |
| 20 */ | |
| 21 | |
|
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22 #include <errno.h> |
| 4 | 23 #include <stdio.h> |
| 24 #include <stdlib.h> | |
| 25 #include <string.h> | |
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26 #include <ctype.h> |
| 4 | 27 |
| 28 #include "lw_alloc.h" | |
| 29 #include "lw_cmdline.h" | |
| 30 | |
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31 #define DOCCOL 30 |
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32 #define LLEN 78 |
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33 |
| 4 | 34 static struct lw_cmdline_options builtin[3] = |
| 35 { | |
| 36 { "help", '?', 0, 0, "give this help list" }, | |
| 37 { "usage", 0, 0, 0, "give a short usage message" }, | |
| 38 { "version", 'V', 0, 0, "print program version" } | |
| 39 }; | |
| 40 | |
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41 static int cmpr(const void *e1, const void *e2) |
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42 { |
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43 struct lw_cmdline_options **o1, **o2; |
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44 o1 = (struct lw_cmdline_options **)e1; |
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45 o2 = (struct lw_cmdline_options **)e2; |
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46 |
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47 return strcmp((*o1) -> name ? (*o1) -> name : "", (*o2) -> name ? (*o2) -> name : ""); |
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48 } |
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49 |
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50 static int cmpr2(const void *e1, const void *e2) |
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51 { |
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52 struct lw_cmdline_options **o1, **o2; |
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53 o1 = (struct lw_cmdline_options **)e1; |
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54 o2 = (struct lw_cmdline_options **)e2; |
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55 |
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56 if ((*o1) -> key < ((*o2) -> key)) |
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57 return -1; |
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58 if ((*o1) -> key > ((*o2) -> key)) |
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59 return 1; |
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60 return 0; |
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61 } |
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62 |
| 4 | 63 static void lw_cmdline_usage(struct lw_cmdline_parser *parser, char *name) |
| 64 { | |
| 65 struct lw_cmdline_options **slist, **llist; | |
| 66 int nopt; | |
| 67 int i; | |
| 68 int t; | |
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69 int col; |
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70 |
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71 for (nopt = 0; parser -> options[nopt].name || parser -> options[nopt].key || parser -> options[nopt].doc; nopt++) |
| 4 | 72 /* do nothing */ ; |
| 73 | |
| 74 slist = lw_alloc(sizeof(struct lw_cmdline_options *) * (nopt + 3)); | |
| 75 llist = lw_alloc(sizeof(struct lw_cmdline_options *) * (nopt + 3)); | |
| 76 | |
| 77 for (i = 0; i < nopt; i++) | |
| 78 { | |
| 79 slist[i] = &(parser -> options[i]); | |
| 80 llist[i] = &(parser -> options[i]); | |
| 81 } | |
| 82 | |
| 83 /* now sort the two lists */ | |
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84 qsort(slist, nopt, sizeof(struct lw_cmdline_options *), cmpr2); |
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85 qsort(llist, nopt, sizeof(struct lw_cmdline_options *), cmpr); |
| 4 | 86 |
| 87 /* now append the automatic options */ | |
| 88 slist[nopt] = &(builtin[0]); | |
| 89 slist[nopt + 1] = &(builtin[1]); | |
| 90 slist[nopt + 2] = &(builtin[2]); | |
| 91 | |
| 92 llist[nopt] = &(builtin[0]); | |
| 93 llist[nopt + 1] = &(builtin[1]); | |
| 94 llist[nopt + 2] = &(builtin[2]); | |
| 95 | |
| 96 /* now show the usage message */ | |
| 97 printf("Usage: %s", name); | |
| 98 | |
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99 col = 7 + strlen(name); |
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100 |
| 4 | 101 /* print short options that take no args */ |
| 102 t = 0; | |
| 103 for (i = 0; i < nopt + 3; i++) | |
| 104 { | |
| 192 | 105 if (slist[i]->flags & lw_cmdline_opt_hidden) |
| 106 continue; | |
| 4 | 107 if (slist[i]->key > 0x20 && slist[i]->key < 0x7f) |
| 108 { | |
| 109 if (slist[i]->arg == NULL) | |
| 110 { | |
| 111 if (!t) | |
| 112 { | |
| 113 printf(" [-"); | |
| 114 t = 1; | |
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115 col += 3; |
| 4 | 116 } |
| 117 printf("%c", slist[i]->key); | |
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118 col++; |
| 4 | 119 } |
| 120 } | |
| 121 } | |
| 122 if (t) | |
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123 { |
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124 col++; |
| 4 | 125 printf("]"); |
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126 } |
| 4 | 127 |
| 128 /* print short options that take args */ | |
| 129 for (i = 0; i < nopt + 3; i++) | |
| 130 { | |
| 192 | 131 if (slist[i]->flags & lw_cmdline_opt_hidden) |
| 132 continue; | |
| 4 | 133 if (slist[i]->key > 0x20 && slist[i]->key < 0x7f && slist[i] -> arg) |
| 134 { | |
| 135 if (slist[i]->flags & lw_cmdline_opt_optional) | |
| 136 { | |
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137 t = 7 + strlen(slist[i] -> arg); |
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138 if (col + t > LLEN) |
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139 { |
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140 printf("\n "); |
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141 col = 7; |
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142 } |
| 4 | 143 printf(" [-%c[%s]]", slist[i]->key, slist[i]->arg); |
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144 col += t; |
| 4 | 145 } |
| 146 else | |
| 147 { | |
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148 t = 6 + strlen(slist[i] -> arg); |
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149 if (col + t > LLEN) |
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150 { |
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151 printf("\n "); |
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152 col = 7; |
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153 } |
| 4 | 154 printf(" [-%c %s]", slist[i]->key, slist[i]->arg); |
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155 col += t; |
| 4 | 156 } |
| 157 } | |
| 158 } | |
| 159 | |
| 160 /* print long options */ | |
| 161 for (i = 0; i < nopt + 3; i++) | |
| 162 { | |
| 192 | 163 if (slist[i]->flags & lw_cmdline_opt_hidden) |
| 164 continue; | |
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165 if (!(llist[i]->name)) |
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166 continue; |
| 4 | 167 if (llist[i]->arg) |
| 168 { | |
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169 t = strlen(llist[i] -> name) + 6 + strlen(llist[i] -> arg); |
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170 if (llist[i] -> flags & lw_cmdline_opt_optional) |
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171 t += 2; |
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172 if (col + t > LLEN) |
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173 { |
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174 printf("\n "); |
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175 col = 7; |
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176 } |
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177 if (llist[i] -> flags & lw_cmdline_opt_doc) |
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178 { |
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179 printf(" [%s=%s]", llist[i] -> name, llist[i] -> arg); |
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180 t = strlen(llist[i] -> name) + strlen(llist[i] -> arg) + 3; |
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181 } |
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182 else |
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183 { |
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184 printf(" [--%s%s=%s%s]", |
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185 llist[i] -> name, |
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186 (llist[i] -> flags & lw_cmdline_opt_optional) ? "[" : "", |
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187 llist[i] -> arg, |
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188 (llist[i] -> flags & lw_cmdline_opt_optional) ? "]" : ""); |
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189 } |
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190 col += t; |
| 4 | 191 } |
| 192 else | |
| 193 { | |
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194 t = strlen(llist[i] -> name) + 5; |
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195 if (col + t > LLEN) |
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196 { |
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197 printf("\n "); |
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198 col = 7; |
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199 } |
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191
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200 if (llist[i] -> flags & lw_cmdline_opt_doc) |
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201 { |
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202 t -= 2; |
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203 printf(" [%s]", llist[i] -> name); |
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204 } |
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205 else |
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206 { |
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207 printf(" [--%s]", llist[i] -> name); |
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208 } |
|
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209 col += t; |
| 4 | 210 } |
| 211 } | |
| 212 | |
| 213 /* print "non option" text */ | |
| 214 if (parser -> args_doc) | |
| 215 { | |
|
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216 if (col + strlen(parser -> args_doc) + 1 > LLEN) |
|
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217 { |
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218 printf("\n "); |
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219 } |
| 4 | 220 printf(" %s", parser -> args_doc); |
| 221 } | |
| 222 printf("\n"); | |
| 223 | |
| 224 /* clean up scratch lists */ | |
| 225 lw_free(slist); | |
| 226 lw_free(llist); | |
| 227 } | |
| 228 | |
| 5 | 229 static void lw_cmdline_help(struct lw_cmdline_parser *parser, char *name) |
| 4 | 230 { |
| 5 | 231 struct lw_cmdline_options **llist; |
| 232 int nopt; | |
| 233 int i; | |
| 234 char *tstr; | |
|
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235 int col = 0; |
|
191
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236 int noequ; |
| 5 | 237 |
| 238 tstr = parser -> doc; | |
|
191
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239 for (nopt = 0; parser -> options[nopt].name || parser -> options[nopt].key || parser -> options[nopt].doc; nopt++) |
| 5 | 240 /* do nothing */ ; |
| 241 | |
| 242 llist = lw_alloc(sizeof(struct lw_cmdline_options *) * (nopt + 3)); | |
| 243 | |
| 244 for (i = 0; i < nopt; i++) | |
| 245 { | |
| 246 llist[i] = &(parser -> options[i]); | |
| 247 } | |
| 248 | |
| 249 /* now sort the list */ | |
|
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250 qsort(llist, nopt, sizeof(struct lw_cmdline_options *), cmpr); |
| 5 | 251 |
| 252 /* now append the automatic options */ | |
| 253 llist[nopt] = &(builtin[0]); | |
| 254 llist[nopt + 1] = &(builtin[1]); | |
| 255 llist[nopt + 2] = &(builtin[2]); | |
| 256 | |
| 257 /* print brief usage */ | |
| 258 printf("Usage: %s [OPTION...] %s\n", name, parser -> args_doc ? parser -> args_doc : ""); | |
| 259 if (tstr) | |
| 260 { | |
| 261 while (*tstr && *tstr != '\v') | |
| 262 fputc(*tstr++, stdout); | |
| 263 if (*tstr) | |
| 264 tstr++; | |
| 265 } | |
| 266 fputc('\n', stdout); | |
| 267 fputc('\n', stdout); | |
| 268 | |
| 269 /* display options - do it the naïve way for now */ | |
| 270 for (i = 0; i < (nopt + 3); i++) | |
| 271 { | |
| 192 | 272 if (llist[i]->flags & lw_cmdline_opt_hidden) |
| 273 continue; | |
|
191
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274 noequ = 0; |
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275 if (llist[i] -> flags & lw_cmdline_opt_doc) |
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276 { |
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277 col = strlen(llist[i] -> name) + 2; |
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278 printf(" %s", llist[i] -> name); |
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279 noequ = 1; |
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280 } |
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281 else if (llist[i] -> key > 0x20 && llist[i] -> key < 0x7F) |
| 5 | 282 { |
|
191
ddffceb3c331
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283 printf(" -%c", llist[i] -> key); |
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284 col = 5; |
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285 if (llist[i] -> name) |
|
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286 { |
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287 col++; |
|
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288 fputc(',', stdout); |
|
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289 } |
|
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290 fputc(' ', stdout); |
| 5 | 291 } |
| 292 else | |
| 293 { | |
| 294 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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295 col = 6; |
| 5 | 296 } |
|
191
ddffceb3c331
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297 if (llist[i] -> name && !(llist[i] -> flags & lw_cmdline_opt_doc)) |
|
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Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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298 { |
|
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299 col += 2 + strlen(llist[i] -> name); |
|
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Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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300 printf("--%s", llist[i] -> name); |
|
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Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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301 } |
| 5 | 302 if (llist[i] -> arg) |
| 303 { | |
| 304 if (llist[i] -> flags & lw_cmdline_opt_optional) | |
| 305 { | |
|
191
ddffceb3c331
Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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306 col++; |
|
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Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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307 fputc('[', stdout); |
| 5 | 308 } |
|
198
d2bed389e94a
Fix --help and --usage to display = correctly for long option args
William Astle <lost@l-w.ca>
parents:
192
diff
changeset
|
309 if (!noequ) |
| 5 | 310 { |
|
191
ddffceb3c331
Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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311 fputc('=', stdout); |
|
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Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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312 col++; |
|
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Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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313 } |
|
ddffceb3c331
Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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changeset
|
314 printf("%s", 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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changeset
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315 col += strlen(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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316 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
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|
317 { |
|
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Added "documentation only" options to lw_cmdline and also allowed options that do not have a long equivalent
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|
318 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
|
319 fputc(']', stdout); |
| 5 | 320 } |
| 321 } | |
| 322 if (llist[i] -> doc) | |
| 323 { | |
|
6
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Various output cleanups for --help and --usage in lw_cmdline
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324 char *s = llist[i] -> doc; |
|
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changeset
|
325 char *s2; |
|
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|
326 |
|
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|
327 while (*s && isspace(*s)) |
|
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328 s++; |
|
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changeset
|
329 |
|
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changeset
|
330 if (col > DOCCOL) |
|
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changeset
|
331 { |
|
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changeset
|
332 fputc('\n', stdout); |
|
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Various output cleanups for --help and --usage in lw_cmdline
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changeset
|
333 col = 0; |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
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parents:
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changeset
|
334 } |
|
1e5e8ec406fb
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diff
changeset
|
335 while (*s) |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
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parents:
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diff
changeset
|
336 { |
|
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Various output cleanups for --help and --usage in lw_cmdline
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changeset
|
337 while (col < (DOCCOL - 1)) |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
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parents:
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diff
changeset
|
338 { |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
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parents:
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diff
changeset
|
339 fputc(' ', stdout); |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
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parents:
5
diff
changeset
|
340 col++; |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents:
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diff
changeset
|
341 } |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents:
5
diff
changeset
|
342 for (s2 = s; *s2 && !isspace(*s2); s2++) |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
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parents:
5
diff
changeset
|
343 /* do nothing */ ; |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents:
5
diff
changeset
|
344 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
|
345 { |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents:
5
diff
changeset
|
346 /* next line */ |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
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parents:
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diff
changeset
|
347 fputc('\n', stdout); |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
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parents:
5
diff
changeset
|
348 col = 0; |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents:
5
diff
changeset
|
349 continue; |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents:
5
diff
changeset
|
350 } |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents:
5
diff
changeset
|
351 col++; |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents:
5
diff
changeset
|
352 fputc(' ', stdout); |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents:
5
diff
changeset
|
353 while (s != s2) |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents:
5
diff
changeset
|
354 { |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents:
5
diff
changeset
|
355 fputc(*s, stdout); |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents:
5
diff
changeset
|
356 col++; |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents:
5
diff
changeset
|
357 s++; |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents:
5
diff
changeset
|
358 } |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents:
5
diff
changeset
|
359 while (*s && isspace(*s)) |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents:
5
diff
changeset
|
360 s++; |
|
1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
lost@l-w.ca
parents:
5
diff
changeset
|
361 } |
| 5 | 362 } |
| 363 fputc('\n', stdout); | |
| 364 } | |
| 365 | |
| 366 printf("\nMandatory or optional arguments to long options are also mandatory or optional\nfor any corresponding short options.\n"); | |
| 367 | |
| 368 if (*tstr) | |
| 369 { | |
| 370 printf("\n%s\n", tstr); | |
| 371 } | |
| 372 | |
| 373 /* clean up scratch lists */ | |
| 374 lw_free(llist); | |
| 4 | 375 } |
| 376 | |
| 377 int lw_cmdline_parse(struct lw_cmdline_parser *parser, int argc, char **argv, unsigned flags, int *arg_index, void *input) | |
| 378 { | |
| 379 int i, j, r; | |
| 380 int firstarg; | |
| 381 int nextarg; | |
| 382 char *tstr; | |
| 383 int cch; | |
|
441
b138b4005125
Make missing command line arguments fail properly
William Astle <lost@l-w.ca>
parents:
374
diff
changeset
|
384 |
| 4 | 385 /* first, permute the argv array so that all option arguments are at the start */ |
| 386 for (i = 1, firstarg = 1; i < argc; i++) | |
| 387 { | |
| 388 if (argv[i][0] == '-' && argv[i][1]) | |
| 389 { | |
| 390 /* have an option arg */ | |
| 391 if (firstarg == i) | |
| 392 { | |
| 393 firstarg++; | |
| 394 continue; | |
| 395 } | |
| 396 tstr = argv[i]; | |
| 397 for (j = i; j > firstarg; j--) | |
| 398 { | |
| 399 argv[j] = argv[j - 1]; | |
| 400 } | |
| 401 argv[firstarg] = tstr; | |
| 402 firstarg++; | |
| 403 if (argv[firstarg - 1][1] == '-' && argv[firstarg - 1][2] == 0) | |
| 404 break; | |
| 405 } | |
| 406 } | |
| 407 | |
| 408 /* now start parsing options */ | |
| 409 nextarg = firstarg; | |
| 410 i = 1; | |
| 411 cch = 0; | |
| 412 while (i < firstarg) | |
| 413 { | |
| 414 if (cch > 0 && argv[i][cch] == 0) | |
| 415 { | |
| 416 i++; | |
| 417 cch = 0; | |
| 418 continue; | |
| 419 } | |
| 420 | |
| 421 if (cch > 0) | |
| 422 goto shortopt; | |
| 423 | |
| 424 /* skip the "--" option */ | |
| 425 if (argv[i][1] == '-' && argv[i][2] == 0) | |
| 426 break; | |
| 427 | |
| 428 if (argv[i][1] == '-') | |
| 429 { | |
| 430 goto longopt; | |
| 431 } | |
| 432 | |
| 433 cch = 1; | |
| 434 shortopt: | |
| 435 /* handle a short option here */ | |
| 436 | |
| 437 /* automatic options */ | |
| 438 if (argv[i][cch] == '?') | |
| 439 goto do_help; | |
| 440 if (argv[i][cch] == 'V') | |
| 441 goto do_version; | |
| 442 /* 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
|
443 for (j = 0; parser -> options[j].name || parser -> options[j].key || parser -> options[j].doc; j++) |
| 4 | 444 if (parser -> options[j].key == argv[i][cch]) |
| 445 break; | |
| 446 cch++; | |
| 447 tstr = argv[i] + cch; | |
| 105 | 448 if (*tstr == 0) |
| 449 tstr = NULL; | |
| 450 if (!tstr && (parser -> options[j].flags & lw_cmdline_opt_optional) == 0) | |
| 4 | 451 { |
|
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
|
452 /* only consume the next arg if the argument is optional */ |
| 4 | 453 if (nextarg < argc) |
| 454 tstr = argv[nextarg]; | |
| 455 else | |
| 456 tstr = NULL; | |
| 457 } | |
| 458 goto common; | |
| 459 | |
| 460 longopt: | |
| 461 if (strcmp(argv[i], "--help") == 0) | |
| 462 goto do_help; | |
| 463 if (strcmp(argv[i], "--usage") == 0) | |
| 464 goto do_usage; | |
| 465 if (strcmp(argv[i], "--version") == 0) | |
| 466 goto do_version; | |
| 467 /* look up name */ | |
| 468 | |
| 469 for (j = 2; argv[i][j] && argv[i][j] != '='; j++) | |
| 470 /* do nothing */ ; | |
| 471 tstr = lw_alloc(j - 1); | |
| 472 strncpy(tstr, argv[i] + 2, j - 2); | |
| 52 | 473 tstr[j - 2] = 0; |
| 4 | 474 if (argv[i][j] == '=') |
| 475 j++; | |
| 476 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
|
477 for (j = 0; parser -> options[j].name || parser -> options[j].key || parser -> options[j].doc; j++) |
| 4 | 478 { |
|
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
|
479 if (parser -> options[j].name && strcmp(parser -> options[j].name, tstr) == 0) |
| 4 | 480 break; |
| 481 } | |
| 482 lw_free(tstr); | |
| 483 tstr = argv[i] + cch; | |
| 105 | 484 if (*tstr == 0) |
| 485 tstr = NULL; | |
| 4 | 486 cch = 0; |
| 37 | 487 i++; |
| 4 | 488 |
| 489 common: | |
| 490 /* j will be the offset into the option table when we get here */ | |
| 491 /* cch will be zero and tstr will point to the arg if it's a long option */ | |
| 492 /* cch will be > 0 and tstr points to the theoretical option, either within */ | |
| 493 /* this string or "nextarg" */ | |
| 494 if (parser -> options[j].name == NULL) | |
| 495 { | |
|
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
|
496 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
lost@l-w.ca
parents:
54
diff
changeset
|
497 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
lost@l-w.ca
parents:
54
diff
changeset
|
498 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
lost@l-w.ca
parents:
54
diff
changeset
|
499 fprintf(stderr, "Unknown option '%s'. See %s --usage.\n", argv[i - 1], argv[0]); |
|
441
b138b4005125
Make missing command line arguments fail properly
William Astle <lost@l-w.ca>
parents:
374
diff
changeset
|
500 return EINVAL; |
| 4 | 501 } |
| 502 if (parser -> options[j].arg) | |
| 503 { | |
| 504 if (tstr && cch && argv[i][cch] == 0) | |
| 505 nextarg++; | |
| 506 | |
| 105 | 507 //if (!*tstr) |
| 508 // tstr = NULL; | |
| 4 | 509 |
|
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
|
510 /* 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
lost@l-w.ca
parents:
54
diff
changeset
|
511 if (tstr && cch && argv[i][cch] != 0) |
| 104 | 512 { |
|
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
|
513 i++; |
| 104 | 514 cch = 0; |
| 515 } | |
|
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
|
516 |
| 4 | 517 if (!tstr && (parser -> options[j].flags & lw_cmdline_opt_optional) == 0) |
| 518 { | |
| 519 fprintf(stderr, "Option %s requires argument.\n", parser -> options[j].name); | |
|
441
b138b4005125
Make missing command line arguments fail properly
William Astle <lost@l-w.ca>
parents:
374
diff
changeset
|
520 return EINVAL; |
| 4 | 521 } |
| 522 } | |
| 523 r = (*(parser -> parser))(parser -> options[j].key, tstr, input); | |
| 524 if (r != 0) | |
| 525 return r; | |
| 526 } | |
| 527 /* handle non-option args */ | |
| 528 if (arg_index) | |
| 529 *arg_index = nextarg; | |
| 530 for (i = nextarg; i < argc; i++) | |
| 531 { | |
| 532 r = (*(parser -> parser))(lw_cmdline_key_arg, argv[i], input); | |
| 533 if (r != 0) | |
| 534 return r; | |
| 535 } | |
| 536 r = (*(parser -> parser))(lw_cmdline_key_end, NULL, input); | |
| 537 return r; | |
| 538 | |
| 539 do_help: | |
| 5 | 540 lw_cmdline_help(parser, argv[0]); |
| 4 | 541 exit(0); |
| 542 | |
| 543 do_version: | |
| 544 printf("%s\n", parser -> program_version); | |
| 545 exit(0); | |
| 546 | |
| 547 do_usage: | |
| 548 lw_cmdline_usage(parser, argv[0]); | |
| 549 exit(0); | |
| 550 } |