1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520
|
<!-- Creator : groff version 1.18.1 -->
<!-- CreationDate: Fri Dec 23 00:39:57 2005 -->
<html>
<head>
<meta name="generator" content="groff -Thtml, see www.gnu.org">
<meta name="Content-Style" content="text/css">
<title>ARGTABLE2</title>
</head>
<body>
<h1 align=center>ARGTABLE2</h1>
<a href="#NAME">NAME</a><br>
<a href="#SYNOPSIS">SYNOPSIS</a><br>
<a href="#DESCRIPTION">DESCRIPTION</a><br>
<a href="#FUNCTION REFERENCE">FUNCTION REFERENCE</a><br>
<a href="#LITERAL OPTIONS (struct arg_lit)">LITERAL OPTIONS (struct arg_lit)</a><br>
<a href="#INTEGER OPTIONS (struct arg_int)">INTEGER OPTIONS (struct arg_int)</a><br>
<a href="#DOUBLE OPTIONS (struct arg_dbl)">DOUBLE OPTIONS (struct arg_dbl)</a><br>
<a href="#STRING OPTIONS (struct arg_str)">STRING OPTIONS (struct arg_str)</a><br>
<a href="#REGULAR EXPRESSION OPTIONS (struct arg_rex)">REGULAR EXPRESSION OPTIONS (struct arg_rex)</a><br>
<a href="#FILENAME OPTIONS (struct arg_file)">FILENAME OPTIONS (struct arg_file)</a><br>
<a href="#DATE/TIME OPTIONS (struct arg_date)">DATE/TIME OPTIONS (struct arg_date)</a><br>
<a href="#REMARK OPTIONS (struct arg_rem)">REMARK OPTIONS (struct arg_rem)</a><br>
<a href="#END-OF-TABLE OPTIONS (struct arg_end)">END-OF-TABLE OPTIONS (struct arg_end)</a><br>
<a href="#FILES">FILES</a><br>
<a href="#AUTHOR">AUTHOR</a><br>
<hr>
<a name="NAME"></a>
<h2>NAME</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>argtable2 − an ANSI C library for parsing GNU style
command line options</p>
</td>
</table>
<a name="SYNOPSIS"></a>
<h2>SYNOPSIS</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<pre>#include <argtable2.h>
struct <b>arg_lit
</b>struct <b>arg_int
</b>struct <b>arg_dbl
</b>struct <b>arg_str
</b>struct <b>arg_rex
</b>struct <b>arg_file
</b>struct <b>arg_date
</b>struct <b>arg_rem
</b>struct <b>arg_end
</b>struct <b>arg_xxx</b>* <b>arg_xxx0</b>(...)
struct <b>arg_xxx</b>* <b>arg_xxx1</b>(...)
struct <b>arg_xxx</b>* <b>arg_xxxn</b>(...)
int <b>arg_nullcheck</b>(void **argtable)
int <b>arg_parse</b>(int argc, char **argv, void **argtable)
void <b>arg_print_option</b>(FILE *fp, const char *shortopts, const char *longopts,
const char *datatype, const char *suffix)
void <b>arg_print_syntax</b>(FILE *fp, void **argtable, const char *suffix)
void <b>arg_print_syntaxv</b>(FILE *fp, void **argtable, const char *suffix)
void <b>arg_print_glossary</b>(FILE *fp, void **argtable, const char *format)
void <b>arg_print_glossary_gnu</b>(FILE *fp, void **argtable)
void <b>arg_print_errors</b>(FILE *fp, struct arg_end *end, const char *progname)
void <b>arg_freetable</b>(void **argtable, size_t n)
</pre>
</td>
</table>
<a name="DESCRIPTION"></a>
<h2>DESCRIPTION</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Argtable is an ANSI C library for parsing GNU style
command line arguments with a minimum of fuss. It enables
the programmer to define their program’s argument
syntax directly in the source code as an array of structs.
The command line is then parsed according to that
specification and the resulting values stored directly into
user-defined program variables where they are accessible to
the main program.</p>
<!-- INDENTATION -->
<p>This man page is only for reference. Introductory and
advanced texts on argtable should be available on this
system in pdf, html, and postscript from under
<b>@prefix@/share/doc/argtable2/</b> along with example
source code. Alternatively refer to the argtable homepage at
http://argtable.sourceforge.net.</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Constructing an arg_xxx data structure</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Each <b>arg_xxx</b> struct has it own unique set of
constructor functions and while these may differ slightly
between <b>arg_xxx</b> structs, they are generally of the
form:</p>
<!-- INDENTATION -->
<p>struct <b>arg_xxx* arg_xxx0</b> (const char *shortopts,
const char *longopts, const char *datatype, const char
*glossary)</p>
<!-- INDENTATION -->
<p>struct <b>arg_xxx* arg_xxx1</b> (const char *shortopts,
const char *longopts, const char *datatype, const char
*glossary)</p>
<!-- INDENTATION -->
<p>struct <b>arg_xxx* arg_xxxn</b> (const char *shortopts,
const char *longopts, const char *datatype, int mincount,
int maxcount, const char *glossary)</p>
<!-- INDENTATION -->
<p>The <b>arg_xxx0()</b> and <b>arg_xxx1()</b> forms are
merely abbreviated forms of <b>arg_xxxn()</b> and are
provided as a convenience for the most common arrangements
of command line options; namely those that have zero-or-one
occurrences (mincount=0,maxcount=1) and those that have one
exactly one occurrence (mincount=1,maxcount=1)
respectively.</p>
<!-- INDENTATION -->
<p>The <i>const char* shortopts</i> parameter defines the
option’s short form tag (eg: -x, -k3,
-D"macro"). It can be left as NULL if a short
option is not required, otherwise use it to specify the
desired short option character in the string (without the
leading "-" and without any whitespace). For
example, the short option -v is defined simply as
"v". In fact, a command line option may have
multiple alternate short form tags defined for it by
concatenating the desired characters into the shortopts
string. For instance "abc" defines an option which
will accept any of the three equivalent short forms -a, -b,
-c interchangeably.</p>
<!-- INDENTATION -->
<p>The <i>const char* longopts</i> parameter is similar to
<i>shortopts</i>, except it defines the option’s long
form tags (eg: --help, --depth=3, --name=myfile.txt). It too
can be left as NULL if not required, and it too can have
multiple equivalent tags defined but these must be separated
by commas. For example, if we wish to define two equivalent
long options --quiet and --silent then we would give
longopts as "quiet,silent". Remember not to
include any whitespace.</p>
<!-- INDENTATION -->
<p>If both <i>shortopts</i> and <i>longopts</i> are given as
NULL then the resulting option is an untagged argument.</p>
<!-- INDENTATION -->
<p>The <i>const char* datatype</i> parameter is a
descriptive string you can use to customize the appearance
of the argument data type in error messages and so forth. It
does not affect the actual data type definition as that is a
fixed property of the <b>arg_xxx</b> struct. So for example,
defining a <i>datatype</i> of "<bar>" will
result in the option being display something like "-x
<bar>" or "--foo=<bar>" depending
upon your option tags. If given as NULL, the <i>datatype</i>
string will revert to the default value for the particular
<b>arg_xxx</b> struct. You can effectively disable the
default by specifying <i>datatype</i> as an empty
string.</p>
<!-- INDENTATION -->
<p>The <i>int mincount</i> parameter specifies the minimum
number of occurrences that the option must appear on the
command line. If the option does not appear at least that
many times then the parser reports it as a syntax error. The
<i>mincount</i> defaults to 0 for the <b>arg_xxx0()</b>
functions and 1 for <b>arg_xxx1()</b> functions.</p>
<!-- INDENTATION -->
<p>The <i>int maxcount</i> parameter specifies the maximum
number of occurrences that the option may appear on the
command line. Any occurrences beyond the maximum are
discarded by the parser reported as syntax errors. The
<i>maxcount</i> defaults to 1 for both the <b>arg_xxx0()</b>
and <b>arg_xxx1()</b> functions.</p>
<!-- INDENTATION -->
<p>The <i>const char* glossary</i> parameter is another
descriptive string but this one appears in the glossary
table summarizing the program’s command line options.
The glossary table is generated automatically by the
<b>arg_print_glossary</b> function (see later). For example,
a glossary string of "the foobar factor" would
appear in the glossary table along side the option something
like:</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="20%"></td>
<td width="79%">
<p><tt>--foo=<bar> the foobar factor</tt></p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Specifying a NULL glossary string causes that option to
be omitted from the glossary table.</p>
<!-- INDENTATION -->
<p>See below for the exact definitions of the individual
<b>arg_xxx</b> structs and their constructor functions.</p>
</td>
</table>
<a name="FUNCTION REFERENCE"></a>
<h2>FUNCTION REFERENCE</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>int arg_nullcheck (void **argtable)</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Returns non-zero if the <i>argtable[]</i> array contains
any NULL entries up until the terminating <b>arg_end*</b>
entry. Returns zero otherwise.</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>int arg_parse (int argc, char **argv, void
**argtable)</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Parse the command line arguments in <i>argv[]</i> using
the command line syntax specified in <i>argtable[]</i>,
returning the number of errors encountered. Error details
are recorded in the argument table’s <b>arg_end</b>
structure from where they can be displayed later with the
<b>arg_print_errors</b> function. Upon a successful parse,
the <b>arg_xxx</b> structures referenced in
<i>argtable[]</i> will contain the argument values extracted
from the command line.</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>void arg_print_option (FILE *fp, const char
*shortopts, const char *longopts, const char *datatype,
const char *suffix)</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>This function prints an option’s syntax, as in
<b>-K|--scalar=<int></b>, where the short options,
long options, and datatype are all given as parameters of
this function. It is primarily used within the
<b>arg_xxx</b> structures’ <i>errorfn</i> functions as
a way of displaying an option’s syntax inside of error
messages. However, it can also be used in user code if
desired. The <i>suffix</i> string is provided as a
convenience for appending newlines and so forth to the end
of the display and can be given as NULL if not required.</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>void arg_print_syntax (FILE *fp, void **argtable,
const char *suffix)</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Prints the GNU style command line syntax for the given
argument table, as in: [-abcv] [--scalar=<n>] [-o
myfile] <file> [<file>]<br>
The <i>suffix</i> string is provided as a convenience for
appending newlines and so forth to the end of the display
and can be given as NULL if not required.</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>void arg_print_syntaxv (FILE *fp, void **argtable,
const char *suffix)</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Prints the verbose form of the command line syntax for
the given argument table, as in: [-a] [-b] [-c]
[--scalar=<n>] [-o myfile] [-v|--verbose] <file>
[<file>]<br>
The <i>suffix</i> string is provided as a convenience for
appending newlines and so forth to the end of the display
and can be given as NULL if not required.</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>void arg_print_glossary (FILE *fp, void **argtable,
const char *format)</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Prints a glossary table describing each option in the
given argument table. The <i>format</i> string is passed to
printf to control the formatting of each entry in the the
glossary. It must have exactly two "%s" format
parameters as in "%-25s %s\n", the first is for
the option’s syntax and the second for its glossary
string. If an option’s glossary string is NULL then
that option in omitted from the glossary display.</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>void arg_print_glossary_gnu (FILE *fp, void
**argtable)</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>An alternate form of <b>arg_print_glossary()</b> that
prints the glossary using strict GNU formatting conventions
wherein long options are vertically aligned in a second
column, and lines are wrapped at 80 characters.</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>void arg_print_errors (FILE *fp, struct arg_end *end,
const char *progname)</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Prints the details of all errors stored in the <i>end</i>
data structure. The <i>progname</i> string is prepended to
each error message.</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>void arg_freetable (void ** argtable, size_t
n)</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Deallocates the memory used by each <b>arg_xxx</b> struct
referenced by <i>argtable[]</i>. It does this by calling
<b>free</b> for each of the <i>n</i> pointers in the
argtable array and then nulling them for safety.</p>
</td>
</table>
<a name="LITERAL OPTIONS (struct arg_lit)"></a>
<h2>LITERAL OPTIONS (struct arg_lit)</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Command line examples</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>-x, -y, -z, --help, --verbose</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Data Structure</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<pre>struct <b>arg_lit
</b> {
struct <b>arg_hdr</b> hdr;
int count;
};
</pre>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Constructor Functions</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_lit* arg_lit0</b> (const char *shortopts,
const char *longopts, const char *glossary)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_lit* arg_lit1</b> (const char *shortopts,
const char *longopts, const char *glossary)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_lit* arg_litn</b> (const char *shortopts,
const char *longopts, int mincount, int maxcount, const char
*glossary)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Description</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Literal options take no argument values so all that is to
be seen in the <b>arg_lit</b> struct is the <i>count</i> of
the number of times the option was present on the command
line. Upon a successful parse, <i>count</i> is guaranteed to
be within the <i>mincount</i> and <i>maxcount</i> limits set
for the option at construction.</p>
</td>
</table>
<a name="INTEGER OPTIONS (struct arg_int)"></a>
<h2>INTEGER OPTIONS (struct arg_int)</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Command line examples</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>-x2, -y 7, -z-3, --size=734, --count 124</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Data Structure</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<pre>struct <b>arg_int
</b> {
struct <b>arg_hdr</b> hdr;
int count;
int *ival;
};
</pre>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Constructor Functions</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_int* arg_int0</b> (const char *shortopts,
const char *longopts, const char *datatype, const char
*glossary)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_int* arg_int1</b> (const char *shortopts,
const char *longopts, const char *datatype, const char
*glossary)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_int* arg_intn</b> (const char *shortopts,
const char *longopts, const char *datatype, int mincount,
int maxcount, const char *glossary</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Description</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>The <b>arg_int</b> struct contains the <i>count</i> of
the number of times the option was present on the command
line and a pointer (<i>ival</i>) to an array containing the
integer values given with those particular options. The
array is fixed at construction time to hold <i>maxcount</i>
integers at most.</p>
<!-- INDENTATION -->
<p>Upon a successful parse, <i>count</i> is guaranteed to be
within the <i>mincount</i> and <i>maxcount</i> limits set
for the option at construction with the appropriate values
store in the <i>ival</i> array. The parser will not accept
any values beyond that limit.</p>
<!-- INDENTATION -->
<p>It is quite acceptable to set default values in the
<i>ival</i> array prior to calling arg_parse if desired as
the parser does alter <i>ival</i> entries for which no
command line argument is received.</p>
</td>
</table>
<a name="DOUBLE OPTIONS (struct arg_dbl)"></a>
<h2>DOUBLE OPTIONS (struct arg_dbl)</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Command line examples</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>-x2.234, -y 7e-03, -z-3.3E+6, --pi=3.1415, --tolerance
1.0E-6</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Data Structure</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<pre>struct <b>arg_dbl
</b> {
struct <b>arg_hdr</b> hdr;
int count;
double *dval;
};
</pre>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Constructor Functions</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_dbl* arg_dbl0</b> (const char *shortopts,
const char *longopts, const char *datatype, const char
*glossary)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_dbl* arg_dbl1</b> (const char *shortopts,
const char *longopts, const char *datatype, const char
*glossary)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_dbl* arg_dbln</b> (const char *shortopts,
const char *longopts, const char *datatype, int mincount,
int maxcount, const char *glossary</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Description</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Like <b>arg_int</b> but the arguments values are stored
as doubles in <i>dval</i>.</p>
</td>
</table>
<a name="STRING OPTIONS (struct arg_str)"></a>
<h2>STRING OPTIONS (struct arg_str)</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Command line examples</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>-Dmacro, -t mytitle, -m "my message string",
--title="hello world"</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Data Structure</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<pre>struct <b>arg_str
</b> {
struct <b>arg_hdr</b> hdr;
int count;
const char **sval;
};
</pre>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Constructor Functions</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_str* arg_str0</b> (const char *shortopts,
const char *longopts, const char *datatype, const char
*glossary)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_str* arg_str1</b> (const char *shortopts,
const char *longopts, const char *datatype, const char
*glossary)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_str* arg_strn</b> (const char *shortopts,
const char *longopts, const char *datatype, int mincount,
int maxcount, const char *glossary)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Description</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>The <b>arg_str</b> struct contains the <i>count</i> of
the number of times the option was present on the command
line and a pointer (<i>sval</i>) to an array containing
pointers to the parsed string values. The array is fixed at
construction time to hold <i>maxcount</i> string pointers at
most. These pointers in this array reference the actual
command line string buffers stored in argv[], so the string
contents should not be should not be altered. Although it is
quite acceptable to set default string pointers in the
<i>sval</i> array prior to calling arg_parse as the parser
does alter them if no matching command line argument is
received.</p>
</td>
</table>
<a name="REGULAR EXPRESSION OPTIONS (struct arg_rex)"></a>
<h2>REGULAR EXPRESSION OPTIONS (struct arg_rex)</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Command line examples</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>"hello world", -t mytitle, -m "my message
string", --title="hello world"</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Data Structure</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<pre>struct <b>arg_rex
</b> {
struct <b>arg_hdr</b> hdr;
int count;
const char **sval;
};
</pre>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Constructor Functions</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_rex* arg_rex0</b> (const char *shortopts,
const char *longopts, const char *pattern, const char
*datatype, int flags, const char *glossary)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_rex* arg_rex1</b> (const char *shortopts,
const char *longopts, const char *pattern, const char
*datatype, int flags, const char *glossary)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_rex* arg_rexn</b> (const char *shortopts,
const char *longopts, const char *pattern, const char
*datatype, int mincount, int maxcount, int flags, const char
*glossary)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Description</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Like <b>arg_str</b> but but the string argument values
are only accepted if they match a predefined regular
expression. The regular expression is defined by the
<i>pattern</i> parameter passed to the <i>arg_rex</i>
constructor. The regular expression parsing is done using
regex, and its behaviour can be controlled via standard
regex bit flags which are passed to argtable via the
<i>flags</i> parameter in the <i>arg_rex</i> conbstructors.
However the only two regex flags that are relevant to
argtable are REG_EXTENDED (use extended regular expressions
rather than basic ones) and REG_ICASE (ignore case). These
may be logically ORed if desired. This argument type is
useful for matching command line keywords, particularly if
case insensitive strings or pattern matching is required.
See <b>regex(3)</b> for more details of regular expression
matching.</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Restrictions</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Argtable does not support <b>arg_date</b> functionality
under Microsoft Windows platforms as the Microsoft compilers
do include the necessary <b>regex</b> support as
standard.</p>
</td>
</table>
<a name="FILENAME OPTIONS (struct arg_file)"></a>
<h2>FILENAME OPTIONS (struct arg_file)</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Command line xamples</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>-o myfile, -Ihome/foo/bar, --input=~/doc/letter.txt,
--name a.out</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Data Structure</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<pre>struct <b>arg_file
</b> {
struct <b>arg_hdr</b> hdr;
int count;
const char **filename;
const char **basename;
const char **extension;
};
</pre>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Constructor Functions</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_file* arg_file0</b> (const char *shortopts,
const char *longopts, const char *datatype, const char
*glossary)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_file* arg_file1</b> (const char *shortopts,
const char *longopts, const char *datatype, const char
*glossary)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_file* arg_filen</b> (const char *shortopts,
const char *longopts, const char *datatype, int mincount,
int maxcount, const char *glossary)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Description</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Like <b>arg_str</b> but the argument strings are presumed
to have filename qualities so some additional pasring is
done to separate out the filename’s basename and
extension (if they exist). The three arrays filename[],
basename[], extension[] each store up to maxcount entries,
and the i’th entry of each of these arrays refer to
different components of the same string buffer.</p>
<!-- INDENTATION -->
<p>For instance, <b>-o /home/heitmann/mydir/foo.txt</b>
would be parsed as:</p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="16%"></td>
<td width="83%">
<pre>filename[i] = "/home/heitmann/mydir/foo.txt"
basename[i] = "foo.txt"
extension[i] = "txt"
</pre>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>If the filename has no leading path then the basename is
the same as the filename, and if no extension could be
identified then it is given as NULL. Note that filename
extensions are defined as all text following the last
"." in the filename. Thus <b>-o foo</b> would be
parsed as:</p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="16%"></td>
<td width="83%">
<pre>filename[i] = "foo"
basename[i] = "foo"
extension[i] = NULL
</pre>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>As with arg_str, the string pointers in
<i>filename[]</i>, <i>basename[]</i>, and <i>extension[]</i>
actually refer to the original <i>argv[]</i> command line
string buffers so you should not attempt to alter them.</p>
<!-- INDENTATION -->
<p>Note also that the parser only ever treats the filenames
as strings and never attempts to open them as files or
perform any directory lookups on them.</p>
</td>
</table>
<a name="DATE/TIME OPTIONS (struct arg_date)"></a>
<h2>DATE/TIME OPTIONS (struct arg_date)</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Command line examples</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>12/31/04, -d 1982-11-28, --time 23:59</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Data Structure</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<pre>struct <b>arg_date
</b> {
struct <b>arg_hdr</b> hdr;
const char *format;
int count;
struct tm *tmval;
};
</pre>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Constructor Functions</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_date* arg_date0</b> (const char *shortopts,
const char *longopts, const char *format, const char
*datatype, const char *glossary)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_date* arg_date1</b> (const char *shortopts,
const char *longopts, const char *format, const char
*datatype, const char *glossary)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_date* arg_daten</b> (const char *shortopts,
const char *longopts, const char *format, const char
*datatype, int mincount, int maxcount, const char
*glossary)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Description</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Accepts a timestamp string from the command line and
converts it to <i>struct tm</i> format using the system
<b>strptime</b> function. The time format is defined by the
<i>format</i> string passed to the <i>arg_date</i>
constructor, and is passed directly to <b>strptime</b>. See
<b>strptime(3)</b> for more details on the format
string.</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Restrictions</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Argtable does not support <b>arg_date</b> functionality
under Microsoft Windows as the Microsoft compilers do
include the necessary <b>strptime</b> support as
standard.</p>
</td>
</table>
<a name="REMARK OPTIONS (struct arg_rem)"></a>
<h2>REMARK OPTIONS (struct arg_rem)</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Data Structure</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<pre>struct <b>arg_rem
</b> {
struct <b>arg_hdr</b> hdr;
};
</pre>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Constructor Function</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_rem* arg_rem</b> (const char* datatype,
const char* glossary)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Description</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>The <b>arg_rem</b> struct is a dummy struct in the sense
it does not represent a command line option to be parsed.
Instead it provides a means to include additional
<i>datatype</i> and <i>glossary</i> strings in the output of
the <b>arg_print_syntax</b>, <b>arg_print_syntaxv</b>, and
<b>arg_print_glossary functions</b>. As such, <b>arg_rem</b>
structs may be used in the argument table to insert
additional lines of text into the glossary descriptions or
to insert additional text fields into the syntax
description. It has no data members apart from the mandatory
<i>arg_hdr</i> struct.</p>
</td>
</table>
<a name="END-OF-TABLE OPTIONS (struct arg_end)"></a>
<h2>END-OF-TABLE OPTIONS (struct arg_end)</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Data Structure</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<pre>struct <b>arg_end
</b> {
struct <b>arg_hdr</b> hdr;
int count;
int *error;
void **parent;
const char **argval;
};
</pre>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Constructor Function</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>struct <b>arg_end* arg_end</b> (int maxerrors)</p>
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="4%"></td>
<td width="95%">
<p><b>Description</b></p></td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>The arg_end struct is primarily used to mark the end of
an argument table and doesn’t represent any command
line option. Every argument table must have an
<b>arg_end</b> structure as its last entry.</p>
<!-- INDENTATION -->
<p>Apart from terminating the argument table, the
<b>arg_end</b> structure also stores the error codes
generated by the <b>arg_parse</b> function as it attempts to
parse the command line with the given argument table. The
<i>maxerrors</i> parameter passed to the <b>arg_end</b>
constructor specifies the maximum number of errors that the
structure can store. Any further errors are discarded and
replaced with the single error code ARG_ELIMIT which is
later reported to the user by the message "too many
errors". A <i>maxerrors</i> limit of 20 is quite
reasonable.</p>
<!-- INDENTATION -->
<p>The <b>arg_print_errors</b> function will print the
errors stored in the <b>arg_end</b> struct in the same order
as they occurred, so there is no need to understand the
internals of the <b>arg_end</b> struct.</p>
<!-- INDENTATION -->
<p>For those that are curious, the three arrays
<i>error[]</i>, <i>parent[]</i>, and <i>argval[]</i> are
each allocated <i>maxerrors</i> entries at construction. As
usual, the <i>count</i> variable gives the number of entries
actually stored in these arrays. The same value applies to
all three arrays as the i’th entry of each all refer
to different aspects of the same error condition.</p>
<!-- INDENTATION -->
<p>The <i>error[i]</i> entry holds the error code returned
by the <i>hdr.scanfn</i> function of the particular
<b>arg_xxx</b> that is reporting the error. The meaning if
the code is usually known only to the issuing <b>arg_xxx</b>
struct. The predefined error codes that <b>arg_end</b>
handles from the parser itself are the exceptions.</p>
<!-- INDENTATION -->
<p>The <i>parent[i]</i> entry points to the parent
<b>arg_xxx</b> structure that reported the error. That same
<b>arg_xxx</b> structure is also responsible for displaying
a pertinent error message when called on to do so by the
<b>arg_print_errors</b> function. It calls the
<i>hdr.errorfn</i> function of each parent <b>arg_xxx</b>
struct listed in the <b>arg_end</b> structure.</p>
<!-- INDENTATION -->
<p>Lastly, the <i>argval[i]</i> entry points to the command
line argument at which the error occurred, although this may
be NULL when there is no relevant command line value. For
instance, if an error reports a missing option then there
will be no matching command line argument value.</p>
</td>
</table>
<a name="FILES"></a>
<h2>FILES</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>@prefix@/include/argtable2.h<br>
@prefix@/lib/libargtable2.a<br>
@prefix@/lib/libargtable2.so<br>
@prefix@/man3/argtable2.3<br>
@prefix@/share/doc/argtable2/<br>
@prefix@/share/doc/argtable2/example/</p>
</td>
</table>
<a name="AUTHOR"></a>
<h2>AUTHOR</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Stewart Heitmann
<sheitmann@users.sourceforge.net></p>
</td>
</table>
<hr>
</body>
</html>
|