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# popt/popt.c

Go to the documentation of this file.

    00001
    00005 /* (C) 19982000 Red Hat, Inc. -- Licensing details are in the COPYING
    00006    file accompanying popt source distributions, available from
    00007    ftp://ftp.rpm.org/pub/rpm/dist */
    00008
    00009 #undef  MYDEBUG
    00010
    00011 #include "system.h"
    00012
    00013 #if HAVE_FLOAT_H
    00014 #include <float.h>
    00015 #endif
    00016 #include <math.h>
    00017
    00018 #include "findme.h"
    00019 #include "poptint.h"
    00020
    00021 #ifndef HAVE_STRERROR
    00022 static char * strerror(int errno) {
    00023     extern int sys_nerr;
    00024     extern char * sys_errlist[];
    00025
    00026     if ((0 <= errno) && (errno < sys_nerr))
    00027         return sys_errlist[errno];
    00028     else
    00029         return POPT_("unknown errno");
    00030 }
    00031 #endif
    00032
    00033 #ifdef MYDEBUG
    00034 /*@unused@*/ static void prtcon(const char *msg, poptContext con)
    00035 {
    00036     if (msg) fprintf(stderr, "%s", msg);
    00037     fprintf(stderr, "\tcon %p os %p nextCharArg \"%s\" nextArg \"%s\" argv[%d] \"%s\"\n",
    00038         con, con->os,
    00039         (con->os->nextCharArg ? con->os->nextCharArg : ""),
    00040         (con->os->nextArg ? con->os->nextArg : ""),
    00041         con->os->next,
    00042         (con->os->argv && con->os->argv[con->os->next]
    00043                 ? con->os->argv[con->os->next] : ""));
    00044 }
    00045 #endif
    00046
    00047 void poptSetExecPath(poptContext con, const char * path, int allowAbsolute)
    00048 {
    00049     con->execPath = _free(con->execPath);
    00050     con->execPath = xstrdup(path);
    00051     con->execAbsolute = allowAbsolute;
    00052     /*@-nullstate@*/ /* LCL: con->execPath can be NULL? */
    00053     return;
    00054     /*@=nullstate@*/
    00055 }
    00056
    00057 static void invokeCallbacksPRE(poptContext con, const struct poptOption * opt)
    00058         /*@globals internalState@*/
    00059         /*@modifies internalState@*/
    00060 {
    00061     if (opt != NULL)
    00062     for (; opt->longName || opt->shortName || opt->arg; opt++) {
    00063         if (opt->arg == NULL) continue;         /* XXX program error. */
    00064         if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_INCLUDE_TABLE) {
    00065             /* Recurse on included sub-tables. */
    00066             invokeCallbacksPRE(con, opt->arg);
    00067         } else if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_CALLBACK &&
    00068                    (opt->argInfo & POPT_CBFLAG_PRE))
    00069         {   /*@-castfcnptr@*/
    00070             poptCallbackType cb = (poptCallbackType)opt->arg;
    00071             /*@=castfcnptr@*/
    00072             /* Perform callback. */
    00073             /*@-moduncon -noeffectuncon @*/
    00074             cb(con, POPT_CALLBACK_REASON_PRE, NULL, NULL, opt->descrip);
    00075             /*@=moduncon =noeffectuncon @*/
    00076         }
    00077     }
    00078 }
    00079
    00080 static void invokeCallbacksPOST(poptContext con, const struct poptOption * opt)
    00081         /*@globals internalState@*/
    00082         /*@modifies internalState@*/
    00083 {
    00084     if (opt != NULL)
    00085     for (; opt->longName || opt->shortName || opt->arg; opt++) {
    00086         if (opt->arg == NULL) continue;         /* XXX program error. */
    00087         if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_INCLUDE_TABLE) {
    00088             /* Recurse on included sub-tables. */
    00089             invokeCallbacksPOST(con, opt->arg);
    00090         } else if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_CALLBACK &&
    00091                    (opt->argInfo & POPT_CBFLAG_POST))
    00092         {   /*@-castfcnptr@*/
    00093             poptCallbackType cb = (poptCallbackType)opt->arg;
    00094             /*@=castfcnptr@*/
    00095             /* Perform callback. */
    00096             /*@-moduncon -noeffectuncon @*/
    00097             cb(con, POPT_CALLBACK_REASON_POST, NULL, NULL, opt->descrip);
    00098             /*@=moduncon =noeffectuncon @*/
    00099         }
    00100     }
    00101 }
    00102
    00103 static void invokeCallbacksOPTION(poptContext con,
    00104                                   const struct poptOption * opt,
    00105                                   const struct poptOption * myOpt,
    00106                                   /*@null@*/ const void * myData, int shorty)
    00107         /*@globals internalState@*/
    00108         /*@modifies internalState@*/
    00109 {
    00110     const struct poptOption * cbopt = NULL;
    00111
    00112     if (opt != NULL)
    00113     for (; opt->longName || opt->shortName || opt->arg; opt++) {
    00114         if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_INCLUDE_TABLE) {
    00115             /* Recurse on included sub-tables. */
    00116             if (opt->arg != NULL)       /* XXX program error */
    00117                 invokeCallbacksOPTION(con, opt->arg, myOpt, myData, shorty);
    00118         } else if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_CALLBACK &&
    00119                   !(opt->argInfo & POPT_CBFLAG_SKIPOPTION)) {
    00120             /* Save callback info. */
    00121             cbopt = opt;
    00122         } else if (cbopt != NULL &&
    00123                    ((myOpt->shortName && opt->shortName && shorty &&
    00124                         myOpt->shortName == opt->shortName) ||
    00125                     (myOpt->longName && opt->longName &&
    00126                 /*@-nullpass@*/         /* LCL: opt->longName != NULL */
    00127                         !strcmp(myOpt->longName, opt->longName)))
    00128                 /*@=nullpass@*/
    00129                    )
    00130         {   /*@-castfcnptr@*/
    00131             poptCallbackType cb = (poptCallbackType)cbopt->arg;
    00132             /*@=castfcnptr@*/
    00133             const void * cbData = (cbopt->descrip ? cbopt->descrip : myData);
    00134             /* Perform callback. */
    00135             if (cb != NULL) {   /* XXX program error */
    00136                 /*@-moduncon -noeffectuncon @*/
    00137                 cb(con, POPT_CALLBACK_REASON_OPTION, myOpt,
    00138                         con->os->nextArg, cbData);
    00139                 /*@=moduncon =noeffectuncon @*/
    00140             }
    00141             /* Terminate (unless explcitly continuing). */
    00142             if (!(cbopt->argInfo & POPT_CBFLAG_CONTINUE))
    00143                 return;
    00144         }
    00145     }
    00146 }
    00147
    00148 poptContext poptGetContext(const char * name, int argc, const char ** argv,
    00149                            const struct poptOption * options, int flags)
    00150 {
    00151     poptContext con = malloc(sizeof(*con));
    00152
    00153     if (con == NULL) return NULL;       /* XXX can't happen */
    00154     memset(con, 0, sizeof(*con));
    00155
    00156     con->os = con->optionStack;
    00157     con->os->argc = argc;
    00158     /*@-dependenttrans -assignexpose@*/ /* FIX: W2DO? */
    00159     con->os->argv = argv;
    00160     /*@=dependenttrans =assignexpose@*/
    00161     con->os->argb = NULL;
    00162
    00163     if (!(flags & POPT_CONTEXT_KEEP_FIRST))
    00164         con->os->next = 1;                      /* skip argv[0] */
    00165
    00166     con->leftovers = calloc( (argc + 1), sizeof(*con->leftovers) );
    00167     /*@-dependenttrans -assignexpose@*/ /* FIX: W2DO? */
    00168     con->options = options;
    00169     /*@=dependenttrans =assignexpose@*/
    00170     con->aliases = NULL;
    00171     con->numAliases = 0;
    00172     con->flags = flags;
    00173     con->execs = NULL;
    00174     con->numExecs = 0;
    00175     con->finalArgvAlloced = argc * 2;
    00176     con->finalArgv = calloc( con->finalArgvAlloced, sizeof(*con->finalArgv) );
    00177     con->execAbsolute = 1;
    00178     con->arg_strip = NULL;
    00179
    00180     if (getenv("POSIXLY_CORRECT") || getenv("POSIX_ME_HARDER"))
    00181         con->flags |= POPT_CONTEXT_POSIXMEHARDER;
    00182
    00183     if (name) {
    00184         char * t = malloc(strlen(name) + 1);
    00185         if (t) con->appName = strcpy(t, name);
    00186     }
    00187
    00188     /*@-internalglobs@*/
    00189     invokeCallbacksPRE(con, con->options);
    00190     /*@=internalglobs@*/
    00191
    00192     return con;
    00193 }
    00194
    00195 static void cleanOSE(/*@special@*/ struct optionStackEntry *os)
    00196         /*@uses os @*/
    00197         /*@releases os->nextArg, os->argv, os->argb @*/
    00198         /*@modifies os @*/
    00199 {
    00200     os->nextArg = _free(os->nextArg);
    00201     os->argv = _free(os->argv);
    00202     os->argb = PBM_FREE(os->argb);
    00203 }
    00204
    00205 void poptResetContext(poptContext con)
    00206 {
    00207     int i;
    00208
    00209     if (con == NULL) return;
    00210     while (con->os > con->optionStack) {
    00211         cleanOSE(con->os--);
    00212     }
    00213     con->os->argb = PBM_FREE(con->os->argb);
    00214     con->os->currAlias = NULL;
    00215     con->os->nextCharArg = NULL;
    00216     con->os->nextArg = NULL;
    00217     con->os->next = 1;                  /* skip argv[0] */
    00218
    00219     con->numLeftovers = 0;
    00220     con->nextLeftover = 0;
    00221     con->restLeftover = 0;
    00222     con->doExec = NULL;
    00223
    00224     if (con->finalArgv != NULL)
    00225     for (i = 0; i < con->finalArgvCount; i++)
    00226         /*@-unqualifiedtrans@*/         /* FIX: typedef double indirection. */
    00227         con->finalArgv[i] = _free(con->finalArgv[i]);
    00228         /*@=unqualifiedtrans@*/
    00229
    00230     con->finalArgvCount = 0;
    00231     con->arg_strip = PBM_FREE(con->arg_strip);
    00232     /*@-nullstate@*/    /* FIX: con->finalArgv != NULL */
    00233     return;
    00234     /*@=nullstate@*/
    00235 }
    00236
    00237 /* Only one of longName, shortName should be set, not both. */
    00238 static int handleExec(/*@special@*/ poptContext con,
    00239                 /*@null@*/ const char * longName, char shortName)
    00240         /*@uses con->execs, con->numExecs, con->flags, con->doExec,
    00241                 con->finalArgv, con->finalArgvAlloced, con->finalArgvCount @*/
    00242         /*@modifies con @*/
    00243 {
    00244     poptItem item;
    00245     int i;
    00246
    00247     if (con->execs == NULL || con->numExecs <= 0) /* XXX can't happen */
    00248         return 0;
    00249
    00250     for (i = con->numExecs - 1; i >= 0; i--) {
    00251         item = con->execs + i;
    00252         if (longName && !(item->option.longName &&
    00253                         !strcmp(longName, item->option.longName)))
    00254             continue;
    00255         else if (shortName != item->option.shortName)
    00256             continue;
    00257         break;
    00258     }
    00259     if (i < 0) return 0;
    00260
    00261
    00262     if (con->flags & POPT_CONTEXT_NO_EXEC)
    00263         return 1;
    00264
    00265     if (con->doExec == NULL) {
    00266         con->doExec = con->execs + i;
    00267         return 1;
    00268     }
    00269
    00270     /* We already have an exec to do; remember this option for next
    00271        time 'round */
    00272     if ((con->finalArgvCount + 1) >= (con->finalArgvAlloced)) {
    00273         con->finalArgvAlloced += 10;
    00274         con->finalArgv = realloc(con->finalArgv,
    00275                         sizeof(*con->finalArgv) * con->finalArgvAlloced);
    00276     }
    00277
    00278     i = con->finalArgvCount++;
    00279     if (con->finalArgv != NULL) /* XXX can't happen */
    00280     {   char *s  = malloc((longName ? strlen(longName) : 0) + 3);
    00281         if (s != NULL) {        /* XXX can't happen */
    00282             if (longName)
    00283                 sprintf(s, "--%s", longName);
    00284             else
    00285                 sprintf(s, "-%c", shortName);
    00286             con->finalArgv[i] = s;
    00287         } else
    00288             con->finalArgv[i] = NULL;
    00289     }
    00290
    00291     /*@-nullstate@*/    /* FIX: con->finalArgv[] == NULL */
    00292     return 1;
    00293     /*@=nullstate@*/
    00294 }
    00295
    00296 /* Only one of longName, shortName may be set at a time */
    00297 static int handleAlias(/*@special@*/ poptContext con,
    00298                 /*@null@*/ const char * longName, char shortName,
    00299                 /*@keep@*/ /*@null@*/ const char * nextCharArg)
    00300         /*@uses con->aliases, con->numAliases, con->optionStack, con->os,
    00301                 con->os->currAlias, con->os->currAlias->option.longName @*/
    00302         /*@modifies con @*/
    00303 {
    00304     poptItem item = con->os->currAlias;
    00305     int rc;
    00306     int i;
    00307
    00308     if (item) {
    00309         if (longName && (item->option.longName &&
    00310                 !strcmp(longName, item->option.longName)))
    00311             return 0;
    00312         if (shortName && shortName == item->option.shortName)
    00313             return 0;
    00314     }
    00315
    00316     if (con->aliases == NULL || con->numAliases <= 0) /* XXX can't happen */
    00317         return 0;
    00318
    00319     for (i = con->numAliases - 1; i >= 0; i--) {
    00320         item = con->aliases + i;
    00321         if (longName && !(item->option.longName &&
    00322                         !strcmp(longName, item->option.longName)))
    00323             continue;
    00324         else if (shortName != item->option.shortName)
    00325             continue;
    00326         break;
    00327     }
    00328     if (i < 0) return 0;
    00329
    00330     if ((con->os - con->optionStack + 1) == POPT_OPTION_DEPTH)
    00331         return POPT_ERROR_OPTSTOODEEP;
    00332
    00333     if (nextCharArg && *nextCharArg)
    00334         con->os->nextCharArg = nextCharArg;
    00335
    00336     con->os++;
    00337     con->os->next = 0;
    00338     con->os->stuffed = 0;
    00339     con->os->nextArg = NULL;
    00340     con->os->nextCharArg = NULL;
    00341     con->os->currAlias = con->aliases + i;
    00342     rc = poptDupArgv(con->os->currAlias->argc, con->os->currAlias->argv,
    00343                 &con->os->argc, &con->os->argv);
    00344     con->os->argb = NULL;
    00345
    00346     return (rc ? rc : 1);
    00347 }
    00348
    00349 static int execCommand(poptContext con)
    00350     /*@*/
    00351 {
    00352     poptItem item = con->doExec;
    00353     const char ** argv;
    00354     int argc = 0;
    00355     int rc;
    00356
    00357     if (item == NULL) /*XXX can't happen*/
    00358         return POPT_ERROR_NOARG;
    00359
    00360     if (item->argv == NULL || item->argc < 1 ||
    00361         (!con->execAbsolute && strchr(item->argv[0], '/')))
    00362             return POPT_ERROR_NOARG;
    00363
    00364     argv = malloc(sizeof(*argv) *
    00365                         (6 + item->argc + con->numLeftovers + con->finalArgvCount));
    00366     if (argv == NULL) return POPT_ERROR_MALLOC; /* XXX can't happen */
    00367
    00368     if (!strchr(item->argv[0], '/') && con->execPath) {
    00369         char *s = alloca(strlen(con->execPath) + strlen(item->argv[0]) + sizeof("/"));
    00370         sprintf(s, "%s/%s", con->execPath, item->argv[0]);
    00371         argv[argc] = s;
    00372     } else {
    00373         argv[argc] = findProgramPath(item->argv[0]);
    00374     }
    00375     if (argv[argc++] == NULL) return POPT_ERROR_NOARG;
    00376
    00377     if (item->argc > 1) {
    00378         memcpy(argv + argc, item->argv + 1, sizeof(*argv) * (item->argc - 1));
    00379         argc += (item->argc - 1);
    00380     }
    00381
    00382     if (con->finalArgv != NULL && con->finalArgvCount > 0) {
    00383         memcpy(argv + argc, con->finalArgv,
    00384                 sizeof(*argv) * con->finalArgvCount);
    00385         argc += con->finalArgvCount;
    00386     }
    00387
    00388     if (con->leftovers != NULL && con->numLeftovers > 0) {
    00389 #if 0
    00390         argv[argc++] = "--";
    00391 #endif
    00392         memcpy(argv + argc, con->leftovers, sizeof(*argv) * con->numLeftovers);
    00393         argc += con->numLeftovers;
    00394     }
    00395
    00396     argv[argc] = NULL;
    00397
    00398 #ifdef __hpux
    00399     rc = setresuid(getuid(), getuid(),-1);
    00400     if (rc) return POPT_ERROR_ERRNO;
    00401 #else
    00402 /*
    00403  * XXX " ... on BSD systems setuid() should be preferred over setreuid()"
    00404  * XXX  sez' Timur Bakeyev <mc@bat.ru>
    00405  * XXX  from Norbert Warmuth <nwarmuth@privat.circular.de>
    00406  */
    00407 #if defined(HAVE_SETUID)
    00408     rc = setuid(getuid());
    00409     if (rc) return POPT_ERROR_ERRNO;
    00410 #elif defined (HAVE_SETREUID)
    00411     rc = setreuid(getuid(), getuid()); /*hlauer: not portable to hpux9.01 */
    00412     if (rc) return POPT_ERROR_ERRNO;
    00413 #else
    00414     ; /* Can't drop privileges */
    00415 #endif
    00416 #endif
    00417
    00418     if (argv[0] == NULL)
    00419         return POPT_ERROR_NOARG;
    00420 #ifdef MYDEBUG
    00421     {   const char ** avp;
    00422         fprintf(stderr, "==> execvp(%s) argv[%d]:", argv[0], argc);
    00423         for (avp = argv; *avp; avp++)
    00424             fprintf(stderr, " '%s'", *avp);
    00425         fprintf(stderr, "\n");
    00426     }
    00427 #endif
    00428
    00429     rc = execvp(argv[0], (char *const *)argv);
    00430     return POPT_ERROR_ERRNO;
    00431 }
    00432
    00433 /*@observer@*/ /*@null@*/ static const struct poptOption *
    00434 findOption(const struct poptOption * opt, /*@null@*/ const char * longName,
    00435                 char shortName,
    00436                 /*@null@*/ /*@out@*/ poptCallbackType * callback,
    00437                 /*@null@*/ /*@out@*/ const void ** callbackData,
    00438                 int singleDash)
    00439         /*@modifies *callback, *callbackData */
    00440 {
    00441     const struct poptOption * cb = NULL;
    00442
    00443     /* This happens when a single - is given */
    00444     if (singleDash && !shortName && (longName && *longName == '\0'))
    00445         shortName = '-';
    00446
    00447     for (; opt->longName || opt->shortName || opt->arg; opt++) {
    00448
    00449         if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_INCLUDE_TABLE) {
    00450             const struct poptOption * opt2;
    00451
    00452             /* Recurse on included sub-tables. */
    00453             if (opt->arg == NULL) continue;     /* XXX program error */
    00454             opt2 = findOption(opt->arg, longName, shortName, callback,
    00455                               callbackData, singleDash);
    00456             if (opt2 == NULL) continue;
    00457             /* Sub-table data will be inheirited if no data yet. */
    00458             if (!(callback && *callback)) return opt2;
    00459             if (!(callbackData && *callbackData == NULL)) return opt2;
    00460             /*@-observertrans -dependenttrans @*/
    00461             *callbackData = opt->descrip;
    00462             /*@=observertrans =dependenttrans @*/
    00463             return opt2;
    00464         } else if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_CALLBACK) {
    00465             cb = opt;
    00466         } else if (longName && opt->longName &&
    00467                    (!singleDash || (opt->argInfo & POPT_ARGFLAG_ONEDASH)) &&
    00468                 /*@-nullpass@*/         /* LCL: opt->longName != NULL */
    00469                    !strcmp(longName, opt->longName))
    00470                 /*@=nullpass@*/
    00471         {
    00472             break;
    00473         } else if (shortName && shortName == opt->shortName) {
    00474             break;
    00475         }
    00476     }
    00477
    00478     if (!opt->longName && !opt->shortName)
    00479         return NULL;
    00480     /*@-modobserver -mods @*/
    00481     if (callback) *callback = NULL;
    00482     if (callbackData) *callbackData = NULL;
    00483     if (cb) {
    00484         if (callback)
    00485         /*@-castfcnptr@*/
    00486             *callback = (poptCallbackType)cb->arg;
    00487         /*@=castfcnptr@*/
    00488         if (!(cb->argInfo & POPT_CBFLAG_INC_DATA)) {
    00489             if (callbackData)
    00490                 /*@-observertrans@*/    /* FIX: typedef double indirection. */
    00491                 *callbackData = cb->descrip;
    00492                 /*@=observertrans@*/
    00493         }
    00494     }
    00495     /*@=modobserver =mods @*/
    00496
    00497     return opt;
    00498 }
    00499
    00500 static const char * findNextArg(/*@special@*/ poptContext con,
    00501                 unsigned argx, int delete_arg)
    00502         /*@uses con->optionStack, con->os,
    00503                 con->os->next, con->os->argb, con->os->argc, con->os->argv @*/
    00504         /*@modifies con @*/
    00505 {
    00506     struct optionStackEntry * os = con->os;
    00507     const char * arg;
    00508
    00509     do {
    00510         int i;
    00511         arg = NULL;
    00512         while (os->next == os->argc && os > con->optionStack) os--;
    00513         if (os->next == os->argc && os == con->optionStack) break;
    00514         if (os->argv != NULL)
    00515         for (i = os->next; i < os->argc; i++) {
    00516             /*@-sizeoftype@*/
    00517             if (os->argb && PBM_ISSET(i, os->argb))
    00518                 /*@innercontinue@*/ continue;
    00519             if (*os->argv[i] == '-')
    00520                 /*@innercontinue@*/ continue;
    00521             if (--argx > 0)
    00522                 /*@innercontinue@*/ continue;
    00523             arg = os->argv[i];
    00524             if (delete_arg) {
    00525                 if (os->argb == NULL) os->argb = PBM_ALLOC(os->argc);
    00526                 if (os->argb != NULL)   /* XXX can't happen */
    00527                 PBM_SET(i, os->argb);
    00528             }
    00529             /*@innerbreak@*/ break;
    00530             /*@=sizeoftype@*/
    00531         }
    00532         if (os > con->optionStack) os--;
    00533     } while (arg == NULL);
    00534     return arg;
    00535 }
    00536
    00537 static /*@only@*/ /*@null@*/ const char *
    00538 expandNextArg(/*@special@*/ poptContext con, const char * s)
    00539         /*@uses con->optionStack, con->os,
    00540                 con->os->next, con->os->argb, con->os->argc, con->os->argv @*/
    00541         /*@modifies con @*/
    00542 {
    00543     const char * a = NULL;
    00544     size_t alen;
    00545     char *t, *te;
    00546     size_t tn = strlen(s) + 1;
    00547     char c;
    00548
    00549     te = t = malloc(tn);;
    00550     if (t == NULL) return NULL;         /* XXX can't happen */
    00551     while ((c = *s++) != '\0') {
    00552         switch (c) {
    00553 #if 0   /* XXX can't do this */
    00554         case '\\':      /* escape */
    00555             c = *s++;
    00556             /*@switchbreak@*/ break;
    00557 #endif
    00558         case '!':
    00559             if (!(s[0] == '#' && s[1] == ':' && s[2] == '+'))
    00560                 /*@switchbreak@*/ break;
    00561             /* XXX Make sure that findNextArg deletes only next arg. */
    00562             if (a == NULL) {
    00563                 if ((a = findNextArg(con, 1, 1)) == NULL)
    00564                     /*@switchbreak@*/ break;
    00565             }
    00566             s += 3;
    00567
    00568             alen = strlen(a);
    00569             tn += alen;
    00570             *te = '\0';
    00571             t = realloc(t, tn);
    00572             te = t + strlen(t);
    00573             strncpy(te, a, alen); te += alen;
    00574             continue;
    00575             /*@notreached@*/ /*@switchbreak@*/ break;
    00576         default:
    00577             /*@switchbreak@*/ break;
    00578         }
    00579         *te++ = c;
    00580     }
    00581     *te = '\0';
    00582     t = realloc(t, strlen(t) + 1);      /* XXX memory leak, hard to plug */
    00583     return t;
    00584 }
    00585
    00586 static void poptStripArg(/*@special@*/ poptContext con, int which)
    00587         /*@uses con->arg_strip, con->optionStack @*/
    00588         /*@defines con->arg_strip @*/
    00589         /*@modifies con @*/
    00590 {
    00591     /*@-sizeoftype@*/
    00592     if (con->arg_strip == NULL)
    00593         con->arg_strip = PBM_ALLOC(con->optionStack[0].argc);
    00594     if (con->arg_strip != NULL)         /* XXX can't happen */
    00595     PBM_SET(which, con->arg_strip);
    00596     /*@=sizeoftype@*/
    00597     /*@-compdef@*/ /* LCL: con->arg_strip udefined? */
    00598     return;
    00599     /*@=compdef@*/
    00600 }
    00601
    00602 static int poptSaveLong(const struct poptOption * opt, long aLong)
    00603         /*@modifies opt->arg @*/
    00604 {
    00605     if (opt->arg == NULL)
    00606         return POPT_ERROR_NULLARG;
    00607
    00608     if (opt->argInfo & POPT_ARGFLAG_NOT)
    00609         aLong = ~aLong;
    00610     switch (opt->argInfo & POPT_ARGFLAG_LOGICALOPS) {
    00611     case 0:
    00612         *((long *) opt->arg) = aLong;
    00613         break;
    00614     case POPT_ARGFLAG_OR:
    00615         *((long *) opt->arg) |= aLong;
    00616         break;
    00617     case POPT_ARGFLAG_AND:
    00618         *((long *) opt->arg) &= aLong;
    00619         break;
    00620     case POPT_ARGFLAG_XOR:
    00621         *((long *) opt->arg) ^= aLong;
    00622         break;
    00623     default:
    00624         return POPT_ERROR_BADOPERATION;
    00625         /*@notreached@*/ break;
    00626     }
    00627     return 0;
    00628 }
    00629
    00630 static int poptSaveInt(const struct poptOption * opt, long aLong)
    00631         /*@modifies opt->arg @*/
    00632 {
    00633     if (opt->arg == NULL)
    00634         return POPT_ERROR_NULLARG;
    00635
    00636     if (opt->argInfo & POPT_ARGFLAG_NOT)
    00637         aLong = ~aLong;
    00638     switch (opt->argInfo & POPT_ARGFLAG_LOGICALOPS) {
    00639     case 0:
    00640         *((int *) opt->arg) = aLong;
    00641         break;
    00642     case POPT_ARGFLAG_OR:
    00643         *((int *) opt->arg) |= aLong;
    00644         break;
    00645     case POPT_ARGFLAG_AND:
    00646         *((int *) opt->arg) &= aLong;
    00647         break;
    00648     case POPT_ARGFLAG_XOR:
    00649         *((int *) opt->arg) ^= aLong;
    00650         break;
    00651     default:
    00652         return POPT_ERROR_BADOPERATION;
    00653         /*@notreached@*/ break;
    00654     }
    00655     return 0;
    00656 }
    00657
    00658 /* returns 'val' element, -1 on last item, POPT_ERROR_* on error */
    00659 int poptGetNextOpt(poptContext con)
    00660 {
    00661     const struct poptOption * opt = NULL;
    00662     int done = 0;
    00663
    00664     if (con == NULL)
    00665         return -1;
    00666     while (!done) {
    00667         const char * origOptString = NULL;
    00668         poptCallbackType cb = NULL;
    00669         const void * cbData = NULL;
    00670         const char * longArg = NULL;
    00671         int canstrip = 0;
    00672         int shorty = 0;
    00673
    00674         while (!con->os->nextCharArg && con->os->next == con->os->argc
    00675                 && con->os > con->optionStack) {
    00676             cleanOSE(con->os--);
    00677         }
    00678         if (!con->os->nextCharArg && con->os->next == con->os->argc) {
    00679             /*@-internalglobs@*/
    00680             invokeCallbacksPOST(con, con->options);
    00681             /*@=internalglobs@*/
    00682             if (con->doExec) return execCommand(con);
    00683             return -1;
    00684         }
    00685
    00686         /* Process next long option */
    00687         if (!con->os->nextCharArg) {
    00688             char * localOptString, * optString;
    00689             int thisopt;
    00690
    00691             /*@-sizeoftype@*/
    00692             if (con->os->argb && PBM_ISSET(con->os->next, con->os->argb)) {
    00693                 con->os->next++;
    00694                 continue;
    00695             }
    00696             /*@=sizeoftype@*/
    00697             thisopt = con->os->next;
    00698             if (con->os->argv != NULL)  /* XXX can't happen */
    00699             origOptString = con->os->argv[con->os->next++];
    00700
    00701             if (origOptString == NULL)  /* XXX can't happen */
    00702                 return POPT_ERROR_BADOPT;
    00703
    00704             if (con->restLeftover || *origOptString != '-') {
    00705                 if (con->flags & POPT_CONTEXT_POSIXMEHARDER)
    00706                     con->restLeftover = 1;
    00707                 if (con->flags & POPT_CONTEXT_ARG_OPTS) {
    00708                     con->os->nextArg = xstrdup(origOptString);
    00709                     return 0;
    00710                 }
    00711                 if (con->leftovers != NULL)     /* XXX can't happen */
    00712                     con->leftovers[con->numLeftovers++] = origOptString;
    00713                 continue;
    00714             }
    00715
    00716             /* Make a copy we can hack at */
    00717             localOptString = optString =
    00718                 strcpy(alloca(strlen(origOptString) + 1), origOptString);
    00719
    00720             if (optString[0] == '\0')
    00721                 return POPT_ERROR_BADOPT;
    00722
    00723             if (optString[1] == '-' && !optString[2]) {
    00724                 con->restLeftover = 1;
    00725                 continue;
    00726             } else {
    00727                 char *oe;
    00728                 int singleDash;
    00729
    00730                 optString++;
    00731                 if (*optString == '-')
    00732                     singleDash = 0, optString++;
    00733                 else
    00734                     singleDash = 1;
    00735
    00736                 /* XXX aliases with arg substitution need "--alias=arg" */
    00737                 if (handleAlias(con, optString, '\0', NULL))
    00738                     continue;
    00739
    00740                 if (handleExec(con, optString, '\0'))
    00741                     continue;
    00742
    00743                 /* Check for "--long=arg" option. */
    00744                 for (oe = optString; *oe && *oe != '='; oe++)
    00745                     {};
    00746                 if (*oe == '=') {
    00747                     *oe++ = '\0';
    00748                     /* XXX longArg is mapped back to persistent storage. */
    00749                     longArg = origOptString + (oe - localOptString);
    00750                 }
    00751
    00752                 opt = findOption(con->options, optString, '\0', &cb, &cbData,
    00753                                  singleDash);
    00754                 if (!opt && !singleDash)
    00755                     return POPT_ERROR_BADOPT;
    00756             }
    00757
    00758             if (!opt) {
    00759                 con->os->nextCharArg = origOptString + 1;
    00760             } else {
    00761                 if (con->os == con->optionStack &&
    00762                    opt->argInfo & POPT_ARGFLAG_STRIP)
    00763                 {
    00764                     canstrip = 1;
    00765                     poptStripArg(con, thisopt);
    00766                 }
    00767                 shorty = 0;
    00768             }
    00769         }
    00770
    00771         /* Process next short option */
    00772         /*@-branchstate@*/              /* FIX: W2DO? */
    00773         if (con->os->nextCharArg) {
    00774             origOptString = con->os->nextCharArg;
    00775
    00776             con->os->nextCharArg = NULL;
    00777
    00778             if (handleAlias(con, NULL, *origOptString, origOptString + 1))
    00779                 continue;
    00780
    00781             if (handleExec(con, NULL, *origOptString)) {
    00782                 /* Restore rest of short options for further processing */
    00783                 origOptString++;
    00784                 if (*origOptString != '\0')
    00785                     con->os->nextCharArg = origOptString;
    00786                 continue;
    00787             }
    00788
    00789             opt = findOption(con->options, NULL, *origOptString, &cb,
    00790                              &cbData, 0);
    00791             if (!opt)
    00792                 return POPT_ERROR_BADOPT;
    00793             shorty = 1;
    00794
    00795             origOptString++;
    00796             if (*origOptString != '\0')
    00797                 con->os->nextCharArg = origOptString;
    00798         }
    00799         /*@=branchstate@*/
    00800
    00801         if (opt == NULL) return POPT_ERROR_BADOPT;      /* XXX can't happen */
    00802         if (opt->arg && (opt->argInfo & POPT_ARG_MASK) == POPT_ARG_NONE) {
    00803             if (poptSaveInt(opt, 1L))
    00804                 return POPT_ERROR_BADOPERATION;
    00805         } else if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_VAL) {
    00806             if (opt->arg) {
    00807                 if (poptSaveInt(opt, (long)opt->val))
    00808                     return POPT_ERROR_BADOPERATION;
    00809             }
    00810         } else if ((opt->argInfo & POPT_ARG_MASK) != POPT_ARG_NONE) {
    00811             con->os->nextArg = _free(con->os->nextArg);
    00812             /*@-usedef@*/       /* FIX: W2DO? */
    00813             if (longArg) {
    00814             /*@=usedef@*/
    00815                 longArg = expandNextArg(con, longArg);
    00816                 con->os->nextArg = longArg;
    00817             } else if (con->os->nextCharArg) {
    00818                 longArg = expandNextArg(con, con->os->nextCharArg);
    00819                 con->os->nextArg = longArg;
    00820                 con->os->nextCharArg = NULL;
    00821             } else {
    00822                 while (con->os->next == con->os->argc &&
    00823                        con->os > con->optionStack) {
    00824                     cleanOSE(con->os--);
    00825                 }
    00826                 if (con->os->next == con->os->argc) {
    00827                     if (!(opt->argInfo & POPT_ARGFLAG_OPTIONAL))
    00828                         /*@-compdef@*/  /* FIX: con->os->argv not defined */
    00829                         return POPT_ERROR_NOARG;
    00830                         /*@=compdef@*/
    00831                     con->os->nextArg = NULL;
    00832                 } else {
    00833
    00834                     /*
    00835                      * Make sure this isn't part of a short arg or the
    00836                      * result of an alias expansion.
    00837                      */
    00838                     if (con->os == con->optionStack &&
    00839                         (opt->argInfo & POPT_ARGFLAG_STRIP) &&
    00840                         canstrip) {
    00841                         poptStripArg(con, con->os->next);
    00842                     }
    00843
    00844                     if (con->os->argv != NULL) {        /* XXX can't happen */
    00845                         /* XXX watchout: subtle side-effects live here. */
    00846                         longArg = con->os->argv[con->os->next++];
    00847                         longArg = expandNextArg(con, longArg);
    00848                         con->os->nextArg = longArg;
    00849                     }
    00850                 }
    00851             }
    00852             longArg = NULL;
    00853
    00854             if (opt->arg) {
    00855                 switch (opt->argInfo & POPT_ARG_MASK) {
    00856                 case POPT_ARG_STRING:
    00857                     /* XXX memory leak, hard to plug */
    00858                     *((const char **) opt->arg) = (con->os->nextArg)
    00859                         ? xstrdup(con->os->nextArg) : NULL;
    00860                     /*@switchbreak@*/ break;
    00861
    00862                 case POPT_ARG_INT:
    00863                 case POPT_ARG_LONG:
    00864                 {   long aLong = 0;
    00865                     char *end;
    00866
    00867                     if (con->os->nextArg) {
    00868                         aLong = strtol(con->os->nextArg, &end, 0);
    00869                         if (!(end && *end == '\0'))
    00870                             return POPT_ERROR_BADNUMBER;
    00871                     }
    00872
    00873                     if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_LONG) {
    00874                         if (aLong == LONG_MIN || aLong == LONG_MAX)
    00875                             return POPT_ERROR_OVERFLOW;
    00876                         if (poptSaveLong(opt, aLong))
    00877                             return POPT_ERROR_BADOPERATION;
    00878                     } else {
    00879                         if (aLong > INT_MAX || aLong < INT_MIN)
    00880                             return POPT_ERROR_OVERFLOW;
    00881                         if (poptSaveInt(opt, aLong))
    00882                             return POPT_ERROR_BADOPERATION;
    00883                     }
    00884                 }   /*@switchbreak@*/ break;
    00885
    00886                 case POPT_ARG_FLOAT:
    00887                 case POPT_ARG_DOUBLE:
    00888                 {   double aDouble = 0.0;
    00889                     char *end;
    00890
    00891                     if (con->os->nextArg) {
    00892                         /*@-mods@*/
    00893                         int saveerrno = errno;
    00894                         errno = 0;
    00895                         aDouble = strtod(con->os->nextArg, &end);
    00896                         if (errno == ERANGE)
    00897                             return POPT_ERROR_OVERFLOW;
    00898                         errno = saveerrno;
    00899                         /*@=mods@*/
    00900                         if (*end != '\0')
    00901                             return POPT_ERROR_BADNUMBER;
    00902                     }
    00903
    00904                     if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_DOUBLE) {
    00905                         *((double *) opt->arg) = aDouble;
    00906                     } else {
    00907 #define _ABS(a) ((((a) - 0.0) < DBL_EPSILON) ? -(a) : (a))
    00908                         if ((_ABS(aDouble) - FLT_MAX) > DBL_EPSILON)
    00909                             return POPT_ERROR_OVERFLOW;
    00910                         if ((FLT_MIN - _ABS(aDouble)) > DBL_EPSILON)
    00911                             return POPT_ERROR_OVERFLOW;
    00912                         *((float *) opt->arg) = aDouble;
    00913                     }
    00914                 }   /*@switchbreak@*/ break;
    00915                 default:
    00916                     fprintf(stdout,
    00917                         POPT_("option type (%d) not implemented in popt\n"),
    00918                         (opt->argInfo & POPT_ARG_MASK));
    00919                     exit(EXIT_FAILURE);
    00920                     /*@notreached@*/ /*@switchbreak@*/ break;
    00921                 }
    00922             }
    00923         }
    00924
    00925         if (cb) {
    00926             /*@-internalglobs@*/
    00927             invokeCallbacksOPTION(con, con->options, opt, cbData, shorty);
    00928             /*@=internalglobs@*/
    00929         } else if (opt->val && ((opt->argInfo & POPT_ARG_MASK) != POPT_ARG_VAL))
    00930             done = 1;
    00931
    00932         if ((con->finalArgvCount + 2) >= (con->finalArgvAlloced)) {
    00933             con->finalArgvAlloced += 10;
    00934             con->finalArgv = realloc(con->finalArgv,
    00935                             sizeof(*con->finalArgv) * con->finalArgvAlloced);
    00936         }
    00937
    00938         if (con->finalArgv != NULL)
    00939         {   char *s = malloc((opt->longName ? strlen(opt->longName) : 0) + 3);
    00940             if (s != NULL) {    /* XXX can't happen */
    00941                 if (opt->longName)
    00942                     sprintf(s, "%s%s",
    00943                         ((opt->argInfo & POPT_ARGFLAG_ONEDASH) ? "-" : "--"),
    00944                         opt->longName);
    00945                 else
    00946                     sprintf(s, "-%c", opt->shortName);
    00947                 con->finalArgv[con->finalArgvCount++] = s;
    00948             } else
    00949                 con->finalArgv[con->finalArgvCount++] = NULL;
    00950         }
    00951
    00952         if (opt->arg && (opt->argInfo & POPT_ARG_MASK) == POPT_ARG_NONE)
    00953             /*@-ifempty@*/ ; /*@=ifempty@*/
    00954         else if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_VAL)
    00955             /*@-ifempty@*/ ; /*@=ifempty@*/
    00956         else if ((opt->argInfo & POPT_ARG_MASK) != POPT_ARG_NONE) {
    00957             if (con->finalArgv != NULL && con->os->nextArg)
    00958                 con->finalArgv[con->finalArgvCount++] =
    00959                         /*@-nullpass@*/ /* LCL: con->os->nextArg != NULL */
    00960                         xstrdup(con->os->nextArg);
    00961                         /*@=nullpass@*/
    00962         }
    00963     }
    00964
    00965     return (opt ? opt->val : -1);       /* XXX can't happen */
    00966 }
    00967
    00968 const char * poptGetOptArg(poptContext con)
    00969 {
    00970     const char * ret = NULL;
    00971     /*@-branchstate@*/
    00972     if (con) {
    00973         ret = con->os->nextArg;
    00974         con->os->nextArg = NULL;
    00975     }
    00976     /*@=branchstate@*/
    00977     return ret;
    00978 }
    00979
    00980 const char * poptGetArg(poptContext con)
    00981 {
    00982     const char * ret = NULL;
    00983     if (con && con->leftovers != NULL && con->nextLeftover < con->numLeftovers)
    00984         ret = con->leftovers[con->nextLeftover++];
    00985     return ret;
    00986 }
    00987
    00988 const char * poptPeekArg(poptContext con)
    00989 {
    00990     const char * ret = NULL;
    00991     if (con && con->leftovers != NULL && con->nextLeftover < con->numLeftovers)
    00992         ret = con->leftovers[con->nextLeftover];
    00993     return ret;
    00994 }
    00995
    00996 const char ** poptGetArgs(poptContext con)
    00997 {
    00998     if (con == NULL ||
    00999         con->leftovers == NULL || con->numLeftovers == con->nextLeftover)
    01000         return NULL;
    01001
    01002     /* some apps like [like RPM ;-) ] need this NULL terminated */
    01003     con->leftovers[con->numLeftovers] = NULL;
    01004
    01005     /*@-nullret -nullstate @*/  /* FIX: typedef double indirection. */
    01006     return (con->leftovers + con->nextLeftover);
    01007     /*@=nullret =nullstate @*/
    01008 }
    01009
    01010 poptContext poptFreeContext(poptContext con)
    01011 {
    01012     poptItem item;
    01013     int i;
    01014
    01015     if (con == NULL) return con;
    01016     poptResetContext(con);
    01017     con->os->argb = _free(con->os->argb);
    01018
    01019     if (con->aliases != NULL)
    01020     for (i = 0; i < con->numAliases; i++) {
    01021         item = con->aliases + i;
    01022         /*@-modobserver -observertrans -dependenttrans@*/
    01023         item->option.longName = _free(item->option.longName);
    01024         item->option.descrip = _free(item->option.descrip);
    01025         item->option.argDescrip = _free(item->option.argDescrip);
    01026         /*@=modobserver =observertrans =dependenttrans@*/
    01027         item->argv = _free(item->argv);
    01028     }
    01029     con->aliases = _free(con->aliases);
    01030
    01031     if (con->execs != NULL)
    01032     for (i = 0; i < con->numExecs; i++) {
    01033         item = con->execs + i;
    01034         /*@-modobserver -observertrans -dependenttrans@*/
    01035         item->option.longName = _free(item->option.longName);
    01036         item->option.descrip = _free(item->option.descrip);
    01037         item->option.argDescrip = _free(item->option.argDescrip);
    01038         /*@=modobserver =observertrans =dependenttrans@*/
    01039         item->argv = _free(item->argv);
    01040     }
    01041     con->execs = _free(con->execs);
    01042
    01043     con->leftovers = _free(con->leftovers);
    01044     con->finalArgv = _free(con->finalArgv);
    01045     con->appName = _free(con->appName);
    01046     con->otherHelp = _free(con->otherHelp);
    01047     con->execPath = _free(con->execPath);
    01048     con->arg_strip = PBM_FREE(con->arg_strip);
    01049
    01050     con = _free(con);
    01051     return con;
    01052 }
    01053
    01054 int poptAddAlias(poptContext con, struct poptAlias alias,
    01055                 /*@unused@*/ int flags)
    01056 {
    01057     poptItem item = alloca(sizeof(*item));
    01058     memset(item, 0, sizeof(*item));
    01059     item->option.longName = alias.longName;
    01060     item->option.shortName = alias.shortName;
    01061     item->option.argInfo = POPT_ARGFLAG_DOC_HIDDEN;
    01062     item->option.arg = 0;
    01063     item->option.val = 0;
    01064     item->option.descrip = NULL;
    01065     item->option.argDescrip = NULL;
    01066     item->argc = alias.argc;
    01067     item->argv = alias.argv;
    01068     return poptAddItem(con, item, 0);
    01069 }
    01070
    01071 /*@-mustmod@*/ /* LCL: con not modified? */
    01072 int poptAddItem(poptContext con, poptItem newItem, int flags)
    01073 {
    01074     poptItem * items, item;
    01075     int * nitems;
    01076
    01077     switch (flags) {
    01078     case 1:
    01079         items = &con->execs;
    01080         nitems = &con->numExecs;
    01081         break;
    01082     case 0:
    01083         items = &con->aliases;
    01084         nitems = &con->numAliases;
    01085         break;
    01086     default:
    01087         return 1;
    01088         /*@notreached@*/ break;
    01089     }
    01090
    01091     *items = realloc((*items), ((*nitems) + 1) * sizeof(**items));
    01092     if ((*items) == NULL)
    01093         return 1;
    01094
    01095     item = (*items) + (*nitems);
    01096
    01097     item->option.longName =
    01098         (newItem->option.longName ? xstrdup(newItem->option.longName) : NULL);
    01099     item->option.shortName = newItem->option.shortName;
    01100     item->option.argInfo = newItem->option.argInfo;
    01101     item->option.arg = newItem->option.arg;
    01102     item->option.val = newItem->option.val;
    01103     item->option.descrip =
    01104         (newItem->option.descrip ? xstrdup(newItem->option.descrip) : NULL);
    01105     item->option.argDescrip =
    01106        (newItem->option.argDescrip ? xstrdup(newItem->option.argDescrip) : NULL);
    01107     item->argc = newItem->argc;
    01108     item->argv = newItem->argv;
    01109
    01110     (*nitems)++;
    01111
    01112     return 0;
    01113 }
    01114 /*@=mustmod@*/
    01115
    01116 const char * poptBadOption(poptContext con, int flags)
    01117 {
    01118     struct optionStackEntry * os = NULL;
    01119
    01120     if (con != NULL)
    01121         os = (flags & POPT_BADOPTION_NOALIAS) ? con->optionStack : con->os;
    01122
    01123     /*@-nullderef@*/    /* LCL: os->argv != NULL */
    01124     return (os && os->argv ? os->argv[os->next - 1] : NULL);
    01125     /*@=nullderef@*/
    01126 }
    01127
    01128 const char *const poptStrerror(const int error)
    01129 {
    01130     switch (error) {
    01131       case POPT_ERROR_NOARG:
    01132         return POPT_("missing argument");
    01133       case POPT_ERROR_BADOPT:
    01134         return POPT_("unknown option");
    01135       case POPT_ERROR_BADOPERATION:
    01136         return POPT_("mutually exclusive logical operations requested");
    01137       case POPT_ERROR_NULLARG:
    01138         return POPT_("opt->arg should not be NULL");
    01139       case POPT_ERROR_OPTSTOODEEP:
    01140         return POPT_("aliases nested too deeply");
    01141       case POPT_ERROR_BADQUOTE:
    01142         return POPT_("error in parameter quoting");
    01143       case POPT_ERROR_BADNUMBER:
    01144         return POPT_("invalid numeric value");
    01145       case POPT_ERROR_OVERFLOW:
    01146         return POPT_("number too large or too small");
    01147       case POPT_ERROR_MALLOC:
    01148         return POPT_("memory allocation failed");
    01149       case POPT_ERROR_ERRNO:
    01150         return strerror(errno);
    01151       default:
    01152         return POPT_("unknown error");
    01153     }
    01154 }
    01155
    01156 int poptStuffArgs(poptContext con, const char ** argv)
    01157 {
    01158     int argc;
    01159     int rc;
    01160
    01161     if ((con->os - con->optionStack) == POPT_OPTION_DEPTH)
    01162         return POPT_ERROR_OPTSTOODEEP;
    01163
    01164     for (argc = 0; argv[argc]; argc++)
    01165         {};
    01166
    01167     con->os++;
    01168     con->os->next = 0;
    01169     con->os->nextArg = NULL;
    01170     con->os->nextCharArg = NULL;
    01171     con->os->currAlias = NULL;
    01172     rc = poptDupArgv(argc, argv, &con->os->argc, &con->os->argv);
    01173     con->os->argb = NULL;
    01174     con->os->stuffed = 1;
    01175
    01176     return rc;
    01177 }
    01178
    01179 const char * poptGetInvocationName(poptContext con)
    01180 {
    01181     return (con->os->argv ? con->os->argv[0] : "");
    01182 }
    01183
    01184 int poptStrippedArgv(poptContext con, int argc, char ** argv)
    01185 {
    01186     int numargs = argc;
    01187     int j = 1;
    01188     int i;
    01189
    01190     /*@-sizeoftype@*/
    01191     if (con->arg_strip)
    01192     for (i = 1; i < argc; i++) {
    01193         if (PBM_ISSET(i, con->arg_strip))
    01194             numargs--;
    01195     }
    01196
    01197     for (i = 1; i < argc; i++) {
    01198         if (con->arg_strip && PBM_ISSET(i, con->arg_strip))
    01199             continue;
    01200         argv[j] = (j < numargs) ? argv[i] : NULL;
    01201         j++;
    01202     }
    01203     /*@=sizeoftype@*/
    01204
    01205     return numargs;
    01206 }