| Current Path : /usr/src/contrib/ntp/sntp/libopts/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/contrib/ntp/sntp/libopts/autoopts.c |
/*
* $Id: autoopts.c,v 4.25 2007/04/15 19:01:18 bkorb Exp $
* Time-stamp: "2007-04-15 11:10:40 bkorb"
*
* This file contains all of the routines that must be linked into
* an executable to use the generated option processing. The optional
* routines are in separately compiled modules so that they will not
* necessarily be linked in.
*/
/*
* Automated Options copyright 1992-2007 Bruce Korb
*
* Automated Options is free software.
* You may redistribute it and/or modify it under the terms of the
* GNU General Public License, as published by the Free Software
* Foundation; either version 2, or (at your option) any later version.
*
* Automated Options is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Automated Options. See the file "COPYING". If not,
* write to: The Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* As a special exception, Bruce Korb gives permission for additional
* uses of the text contained in his release of AutoOpts.
*
* The exception is that, if you link the AutoOpts library with other
* files to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the AutoOpts library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by Bruce Korb under
* the name AutoOpts. If you copy code from other sources under the
* General Public License into a copy of AutoOpts, as the General Public
* License permits, the exception does not apply to the code that you add
* in this way. To avoid misleading anyone as to the status of such
* modified files, you must delete this exception notice from them.
*
* If you write modifications of your own for AutoOpts, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*/
static char const zNil[] = "";
/* = = = START-STATIC-FORWARD = = = */
/* static forward declarations maintained by :mkfwd */
static tSuccess
findOptDesc( tOptions* pOpts, tOptState* pOptState );
static tSuccess
nextOption( tOptions* pOpts, tOptState* pOptState );
static tSuccess
doPresets( tOptions* pOpts );
static int
checkConsistency( tOptions* pOpts );
/* = = = END-STATIC-FORWARD = = = */
LOCAL void *
ao_malloc( size_t sz )
{
void * res = malloc(sz);
if (res == NULL) {
fprintf( stderr, "malloc of %d bytes failed\n", (int)sz );
exit( EXIT_FAILURE );
}
return res;
}
#undef malloc
#define malloc(_s) ao_malloc(_s)
LOCAL void *
ao_realloc( void *p, size_t sz )
{
void * res = realloc(p, sz);
if (res == NULL) {
fprintf( stderr, "realloc of %d bytes at 0x%p failed\n", (int)sz, p );
exit( EXIT_FAILURE );
}
return res;
}
#undef realloc
#define realloc(_p,_s) ao_realloc(_p,_s)
LOCAL void
ao_free( void *p )
{
if (p != NULL)
free(p);
}
#undef free
#define free(_p) ao_free(_p)
LOCAL char *
ao_strdup( char const *str )
{
char * res = strdup(str);
if (res == NULL) {
fprintf( stderr, "strdup of %d byte string failed\n", (int)strlen(str) );
exit( EXIT_FAILURE );
}
return res;
}
#undef strdup
#define strdup(_p) ao_strdup(_p)
#ifndef HAVE_PATHFIND
# include "compat/pathfind.c"
#endif
#ifndef HAVE_SNPRINTF
# include "compat/snprintf.c"
#endif
#ifndef HAVE_STRDUP
# include "compat/strdup.c"
#endif
#ifndef HAVE_STRCHR
# include "compat/strchr.c"
#endif
/*
* handleOption
*
* This routine handles equivalencing, sets the option state flags and
* invokes the handler procedure, if any.
*/
LOCAL tSuccess
handleOption( tOptions* pOpts, tOptState* pOptState )
{
/*
* Save a copy of the option procedure pointer.
* If this is an equivalence class option, we still want this proc.
*/
tOptDesc* pOD = pOptState->pOD;
tOptProc* pOP = pOD->pOptProc;
if (pOD->fOptState & OPTST_ALLOC_ARG)
AGFREE(pOD->optArg.argString);
pOD->optArg.argString = pOptState->pzOptArg;
/*
* IF we are presetting options, then we will ignore any un-presettable
* options. They are the ones either marked as such.
*/
if ( ((pOpts->fOptSet & OPTPROC_PRESETTING) != 0)
&& ((pOD->fOptState & OPTST_NO_INIT) != 0)
)
return PROBLEM;
/*
* IF this is an equivalence class option,
* THEN
* Save the option value that got us to this option
* entry. (It may not be pOD->optChar[0], if this is an
* equivalence entry.)
* set the pointer to the equivalence class base
*/
if (pOD->optEquivIndex != NO_EQUIVALENT) {
tOptDesc* p = pOpts->pOptDesc + pOD->optEquivIndex;
/*
* IF the current option state has not been defined (set on the
* command line), THEN we will allow continued resetting of
* the value. Once "defined", then it must not change.
*/
if ((pOD->fOptState & OPTST_DEFINED) != 0) {
/*
* The equivalenced-to option has been found on the command
* line before. Make sure new occurrences are the same type.
*
* IF this option has been previously equivalenced and
* it was not the same equivalenced-to option,
* THEN we have a usage problem.
*/
if (p->optActualIndex != pOD->optIndex) {
fprintf( stderr, (char*)zMultiEquiv, p->pz_Name, pOD->pz_Name,
(pOpts->pOptDesc + p->optActualIndex)->pz_Name);
return FAILURE;
}
} else {
/*
* Set the equivalenced-to actual option index to no-equivalent
* so that we set all the entries below. This option may either
* never have been selected before, or else it was selected by
* some sort of "presetting" mechanism.
*/
p->optActualIndex = NO_EQUIVALENT;
}
if (p->optActualIndex != pOD->optIndex) {
/*
* First time through, copy over the state
* and add in the equivalence flag
*/
p->optActualValue = pOD->optValue;
p->optActualIndex = pOD->optIndex;
pOptState->flags |= OPTST_EQUIVALENCE;
}
/*
* Copy the most recent option argument. set membership state
* is kept in ``p->optCookie''. Do not overwrite.
*/
p->optArg.argString = pOD->optArg.argString;
pOD = p;
} else {
pOD->optActualValue = pOD->optValue;
pOD->optActualIndex = pOD->optIndex;
}
pOD->fOptState &= OPTST_PERSISTENT_MASK;
pOD->fOptState |= (pOptState->flags & ~OPTST_PERSISTENT_MASK);
/*
* Keep track of count only for DEFINED (command line) options.
* IF we have too many, build up an error message and bail.
*/
if ( (pOD->fOptState & OPTST_DEFINED)
&& (++pOD->optOccCt > pOD->optMaxCt) ) {
if ((pOpts->fOptSet & OPTPROC_ERRSTOP) != 0) {
char const * pzEqv =
(pOD->optEquivIndex != NO_EQUIVALENT) ? zEquiv : zNil;
fputs( zErrOnly, stderr );
if (pOD->optMaxCt > 1)
fprintf(stderr, zAtMost, pOD->optMaxCt, pOD->pz_Name, pzEqv);
else
fprintf(stderr, zOnlyOne, pOD->pz_Name, pzEqv);
}
return FAILURE;
}
/*
* If provided a procedure to call, call it
*/
if (pOP != (tpOptProc)NULL)
(*pOP)( pOpts, pOD );
return SUCCESS;
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* HUNT FOR OPTIONS IN THE ARGUMENT LIST
*
* The next four procedures are "private" to nextOption().
* nextOption() uses findOptDesc() to find the next descriptor and it, in
* turn, uses longOptionFind() and shortOptionFind() to actually do the hunt.
*
* longOptionFind
*
* Find the long option descriptor for the current option
*/
LOCAL tSuccess
longOptionFind( tOptions* pOpts, char* pzOptName, tOptState* pOptState )
{
ag_bool disable = AG_FALSE;
char* pzEq = strchr( pzOptName, '=' );
tOptDesc* pOD = pOpts->pOptDesc;
int idx = 0;
int idxLim = pOpts->optCt;
int matchCt = 0;
int matchIdx = 0;
int nameLen;
/*
* IF the value is attached to the name,
* THEN clip it off.
* Either way, figure out how long our name is
*/
if (pzEq != NULL) {
nameLen = (int)(pzEq - pzOptName);
*pzEq = NUL;
} else nameLen = strlen( pzOptName );
do {
if (SKIP_OPT(pOD))
continue;
if (strneqvcmp( pzOptName, pOD->pz_Name, nameLen ) == 0) {
/*
* IF we have a complete match
* THEN it takes priority over any already located partial
*/
if (pOD->pz_Name[ nameLen ] == NUL) {
matchCt = 1;
matchIdx = idx;
break;
}
}
/*
* IF there is a disable name
* *AND* no argument value has been supplied
* (disabled options may have no argument)
* *AND* the option name matches the disable name
* THEN ...
*/
else if ( (pOD->pz_DisableName != NULL)
&& (strneqvcmp(pzOptName, pOD->pz_DisableName, nameLen) == 0)
) {
disable = AG_TRUE;
/*
* IF we have a complete match
* THEN it takes priority over any already located partial
*/
if (pOD->pz_DisableName[ nameLen ] == NUL) {
matchCt = 1;
matchIdx = idx;
break;
}
}
else
continue;
/*
* We found a partial match, either regular or disabling.
* Remember the index for later.
*/
matchIdx = idx;
if (++matchCt > 1)
break;
} while (pOD++, (++idx < idxLim));
if (pzEq != NULL)
*(pzEq++) = '=';
/*
* Make sure we either found an exact match or found only one partial
*/
if (matchCt == 1) {
/*
* IF we found a disablement name,
* THEN set the bit in the callers' flag word
*/
if (disable)
pOptState->flags |= OPTST_DISABLED;
pOptState->pOD = pOpts->pOptDesc + matchIdx;
pOptState->pzOptArg = pzEq;
pOptState->optType = TOPT_LONG;
return SUCCESS;
}
/*
* IF there is no equal sign
* *AND* we are using named arguments
* *AND* there is a default named option,
* THEN return that option.
*/
if ( (pzEq == NULL)
&& NAMED_OPTS(pOpts)
&& (pOpts->specOptIdx.default_opt != NO_EQUIVALENT)) {
pOptState->pOD = pOpts->pOptDesc + pOpts->specOptIdx.default_opt;
pOptState->pzOptArg = pzOptName;
pOptState->optType = TOPT_DEFAULT;
return SUCCESS;
}
/*
* IF we are to stop on errors (the default, actually)
* THEN call the usage procedure.
*/
if ((pOpts->fOptSet & OPTPROC_ERRSTOP) != 0) {
fprintf( stderr, zIllOptStr, pOpts->pzProgPath,
(matchCt == 0) ? zIllegal : zAmbiguous, pzOptName );
(*pOpts->pUsageProc)( pOpts, EXIT_FAILURE );
}
return FAILURE;
}
/*
* shortOptionFind
*
* Find the short option descriptor for the current option
*/
LOCAL tSuccess
shortOptionFind( tOptions* pOpts, uint_t optValue, tOptState* pOptState )
{
tOptDesc* pRes = pOpts->pOptDesc;
int ct = pOpts->optCt;
/*
* Search the option list
*/
for (;;) {
/*
* IF the values match,
* THEN we stop here
*/
if ((! SKIP_OPT(pRes)) && (optValue == pRes->optValue)) {
pOptState->pOD = pRes;
pOptState->optType = TOPT_SHORT;
return SUCCESS;
}
/*
* Advance to next option description
*/
pRes++;
/*
* IF we have searched everything, ...
*/
if (--ct <= 0)
break;
}
/*
* IF the character value is a digit
* AND there is a special number option ("-n")
* THEN the result is the "option" itself and the
* option is the specially marked "number" option.
*/
if ( isdigit( optValue )
&& (pOpts->specOptIdx.number_option != NO_EQUIVALENT) ) {
pOptState->pOD = \
pRes = pOpts->pOptDesc + pOpts->specOptIdx.number_option;
(pOpts->pzCurOpt)--;
pOptState->optType = TOPT_SHORT;
return SUCCESS;
}
/*
* IF we are to stop on errors (the default, actually)
* THEN call the usage procedure.
*/
if ((pOpts->fOptSet & OPTPROC_ERRSTOP) != 0) {
fprintf( stderr, zIllOptChr, pOpts->pzProgPath, optValue );
(*pOpts->pUsageProc)( pOpts, EXIT_FAILURE );
}
return FAILURE;
}
/*
* findOptDesc
*
* Find the option descriptor for the current option
*/
static tSuccess
findOptDesc( tOptions* pOpts, tOptState* pOptState )
{
/*
* IF we are continuing a short option list (e.g. -xyz...)
* THEN continue a single flag option.
* OTHERWISE see if there is room to advance and then do so.
*/
if ((pOpts->pzCurOpt != NULL) && (*pOpts->pzCurOpt != NUL))
return shortOptionFind( pOpts, (tAoUC)*(pOpts->pzCurOpt), pOptState );
if (pOpts->curOptIdx >= pOpts->origArgCt)
return PROBLEM; /* NORMAL COMPLETION */
pOpts->pzCurOpt = pOpts->origArgVect[ pOpts->curOptIdx ];
/*
* IF all arguments must be named options, ...
*/
if (NAMED_OPTS(pOpts)) {
char* pz = pOpts->pzCurOpt;
pOpts->curOptIdx++;
/*
* Skip over any flag/option markers.
* In this mode, they are not required.
*/
while (*pz == '-') pz++;
return longOptionFind( pOpts, pz, pOptState );
}
/*
* Note the kind of flag/option marker
*/
if (*((pOpts->pzCurOpt)++) != '-')
return PROBLEM; /* NORMAL COMPLETION - this + rest are operands */
/*
* Special hack for a hyphen by itself
*/
if (*(pOpts->pzCurOpt) == NUL)
return PROBLEM; /* NORMAL COMPLETION - this + rest are operands */
/*
* The current argument is to be processed as an option argument
*/
pOpts->curOptIdx++;
/*
* We have an option marker.
* Test the next character for long option indication
*/
if (pOpts->pzCurOpt[0] == '-') {
if (*++(pOpts->pzCurOpt) == NUL)
/*
* NORMAL COMPLETION - NOT this arg, but rest are operands
*/
return PROBLEM;
/*
* We do not allow the hyphen to be used as a flag value.
* Therefore, if long options are not to be accepted, we punt.
*/
if ((pOpts->fOptSet & OPTPROC_LONGOPT) == 0) {
fprintf( stderr, zIllOptStr, pOpts->pzProgPath,
zIllegal, pOpts->pzCurOpt-2 );
return FAILURE;
}
return longOptionFind( pOpts, pOpts->pzCurOpt, pOptState );
}
/*
* If short options are not allowed, then do long
* option processing. Otherwise the character must be a
* short (i.e. single character) option.
*/
if ((pOpts->fOptSet & OPTPROC_SHORTOPT) != 0)
return shortOptionFind( pOpts, (tAoUC)*(pOpts->pzCurOpt), pOptState );
return longOptionFind( pOpts, pOpts->pzCurOpt, pOptState );
}
/*
* nextOption
*
* Find the option descriptor and option argument (if any) for the
* next command line argument. DO NOT modify the descriptor. Put
* all the state in the state argument so that the option can be skipped
* without consequence (side effect).
*/
static tSuccess
nextOption( tOptions* pOpts, tOptState* pOptState )
{
tSuccess res;
enum { ARG_NONE, ARG_MAY, ARG_MUST } arg_type = ARG_NONE;
teOptArgType at;
res = findOptDesc( pOpts, pOptState );
if (! SUCCESSFUL( res ))
return res;
pOptState->flags |= (pOptState->pOD->fOptState & OPTST_PERSISTENT_MASK);
at = OPTST_GET_ARGTYPE(pOptState->flags);
/*
* Figure out what to do about option arguments. An argument may be
* required, not associated with the option, or be optional. We detect the
* latter by examining for an option marker on the next possible argument.
* Disabled mode option selection also disables option arguments.
*/
if ((pOptState->flags & OPTST_DISABLED) != 0)
arg_type = ARG_NONE;
else if (at == OPARG_TYPE_NONE)
arg_type = ARG_NONE;
else if (pOptState->flags & OPTST_ARG_OPTIONAL)
arg_type = ARG_MAY;
else
arg_type = ARG_MUST;
switch (arg_type) {
case ARG_MUST:
/*
* An option argument is required. Long options can either have
* a separate command line argument, or an argument attached by
* the '=' character. Figure out which.
*/
switch (pOptState->optType) {
case TOPT_SHORT:
/*
* See if an arg string follows the flag character
*/
if (*++(pOpts->pzCurOpt) == NUL)
pOpts->pzCurOpt = pOpts->origArgVect[ pOpts->curOptIdx++ ];
pOptState->pzOptArg = pOpts->pzCurOpt;
break;
case TOPT_LONG:
/*
* See if an arg string has already been assigned (glued on
* with an `=' character)
*/
if (pOptState->pzOptArg == NULL)
pOptState->pzOptArg = pOpts->origArgVect[ pOpts->curOptIdx++ ];
break;
default:
#ifdef DEBUG
fputs( "AutoOpts lib error: option type not selected\n",
stderr );
exit( EXIT_FAILURE );
#endif
case TOPT_DEFAULT:
/*
* The option was selected by default. The current token is
* the option argument.
*/
break;
}
/*
* Make sure we did not overflow the argument list.
*/
if (pOpts->curOptIdx > pOpts->origArgCt) {
fprintf( stderr, zMisArg, pOpts->pzProgPath,
pOptState->pOD->pz_Name );
return FAILURE;
}
pOpts->pzCurOpt = NULL; /* next time advance to next arg */
break;
case ARG_MAY:
/*
* An option argument is optional.
*/
switch (pOptState->optType) {
case TOPT_SHORT:
if (*++pOpts->pzCurOpt != NUL)
pOptState->pzOptArg = pOpts->pzCurOpt;
else {
char* pzLA = pOpts->origArgVect[ pOpts->curOptIdx ];
/*
* BECAUSE it is optional, we must make sure
* we did not find another flag and that there
* is such an argument.
*/
if ((pzLA == NULL) || (*pzLA == '-'))
pOptState->pzOptArg = NULL;
else {
pOpts->curOptIdx++; /* argument found */
pOptState->pzOptArg = pzLA;
}
}
break;
case TOPT_LONG:
/*
* Look for an argument if we don't already have one (glued on
* with a `=' character) *AND* we are not in named argument mode
*/
if ( (pOptState->pzOptArg == NULL)
&& (! NAMED_OPTS(pOpts))) {
char* pzLA = pOpts->origArgVect[ pOpts->curOptIdx ];
/*
* BECAUSE it is optional, we must make sure
* we did not find another flag and that there
* is such an argument.
*/
if ((pzLA == NULL) || (*pzLA == '-'))
pOptState->pzOptArg = NULL;
else {
pOpts->curOptIdx++; /* argument found */
pOptState->pzOptArg = pzLA;
}
}
break;
default:
case TOPT_DEFAULT:
fputs( "AutoOpts lib error: defaulted to option with optional arg\n",
stderr );
exit( EX_SOFTWARE );
}
/*
* After an option with an optional argument, we will
* *always* start with the next option because if there
* were any characters following the option name/flag,
* they would be interpreted as the argument.
*/
pOpts->pzCurOpt = NULL;
break;
default: /* CANNOT */
/*
* No option argument. Make sure next time around we find
* the correct option flag character for short options
*/
if (pOptState->optType == TOPT_SHORT)
(pOpts->pzCurOpt)++;
/*
* It is a long option. Make sure there was no ``=xxx'' argument
*/
else if (pOptState->pzOptArg != NULL) {
fprintf( stderr, zNoArg, pOpts->pzProgPath,
pOptState->pOD->pz_Name );
return FAILURE;
}
/*
* It is a long option. Advance to next command line argument.
*/
else
pOpts->pzCurOpt = NULL;
}
return SUCCESS;
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* DO PRESETS
*
* The next several routines do the immediate action pass on the command
* line options, then the environment variables, then the config files in
* reverse order. Once done with that, the order is reversed and all
* the config files and environment variables are processed again, this
* time only processing the non-immediate action options. doPresets()
* will then return for optionProcess() to do the final pass on the command
* line arguments.
*/
/*
* doImmediateOpts - scan the command line for immediate action options
*/
LOCAL tSuccess
doImmediateOpts( tOptions* pOpts )
{
pOpts->curOptIdx = 1; /* start by skipping program name */
pOpts->pzCurOpt = NULL;
/*
* Examine all the options from the start. We process any options that
* are marked for immediate processing.
*/
for (;;) {
tOptState optState = OPTSTATE_INITIALIZER(PRESET);
switch (nextOption( pOpts, &optState )) {
case FAILURE: goto optionsDone;
case PROBLEM: return SUCCESS; /* no more args */
case SUCCESS: break;
}
/*
* IF this *is* an immediate-attribute option, then do it.
*/
if (! DO_IMMEDIATELY(optState.flags))
continue;
if (! SUCCESSFUL( handleOption( pOpts, &optState )))
break;
} optionsDone:;
if ((pOpts->fOptSet & OPTPROC_ERRSTOP) != 0)
(*pOpts->pUsageProc)( pOpts, EXIT_FAILURE );
return FAILURE;
}
LOCAL tSuccess
doRegularOpts( tOptions* pOpts )
{
/*
* Now, process all the options from our current position onward.
* (This allows interspersed options and arguments for the few
* non-standard programs that require it.)
*/
for (;;) {
tOptState optState = OPTSTATE_INITIALIZER(DEFINED);
switch (nextOption( pOpts, &optState )) {
case FAILURE: goto optionsDone;
case PROBLEM: return SUCCESS; /* no more args */
case SUCCESS: break;
}
/*
* IF this is not being processed normally (i.e. is immediate action)
* THEN skip it (unless we are supposed to do it a second time).
*/
if (! DO_NORMALLY(optState.flags)) {
if (! DO_SECOND_TIME(optState.flags))
continue;
optState.pOD->optOccCt--; /* don't count last time */
}
if (! SUCCESSFUL( handleOption( pOpts, &optState )))
break;
} optionsDone:;
if ((pOpts->fOptSet & OPTPROC_ERRSTOP) != 0)
(*pOpts->pUsageProc)( pOpts, EXIT_FAILURE );
return FAILURE;
}
/*
* doPresets - check for preset values from a config file or the envrionment
*/
static tSuccess
doPresets( tOptions* pOpts )
{
tOptDesc * pOD = NULL;
if (! SUCCESSFUL( doImmediateOpts( pOpts )))
return FAILURE;
/*
* IF this option set has a --save-opts option, then it also
* has a --load-opts option. See if a command line option has disabled
* option presetting.
*/
if (pOpts->specOptIdx.save_opts != 0) {
pOD = pOpts->pOptDesc + pOpts->specOptIdx.save_opts + 1;
if (DISABLED_OPT(pOD))
return SUCCESS;
}
/*
* Until we return from this procedure, disable non-presettable opts
*/
pOpts->fOptSet |= OPTPROC_PRESETTING;
/*
* IF there are no config files,
* THEN do any environment presets and leave.
*/
if (pOpts->papzHomeList == NULL) {
doEnvPresets( pOpts, ENV_ALL );
}
else {
doEnvPresets( pOpts, ENV_IMM );
/*
* Check to see if environment variables have disabled presetting.
*/
if ((pOD != NULL) && ! DISABLED_OPT(pOD))
internalFileLoad( pOpts );
/*
* ${PROGRAM_LOAD_OPTS} value of "no" cannot disable other environment
* variable options. Only the loading of .rc files.
*/
doEnvPresets( pOpts, ENV_NON_IMM );
}
pOpts->fOptSet &= ~OPTPROC_PRESETTING;
return SUCCESS;
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* VERIFY OPTION CONSISTENCY
*
* Make sure that the argument list passes our consistency tests.
*/
static int
checkConsistency( tOptions* pOpts )
{
int errCt = 0;
tOptDesc* pOD = pOpts->pOptDesc;
int oCt = pOpts->presetOptCt;
/*
* FOR each of "oCt" options, ...
*/
for (;;) {
const int* pMust = pOD->pOptMust;
const int* pCant = pOD->pOptCant;
/*
* IF the current option was provided on the command line
* THEN ensure that any "MUST" requirements are not
* "DEFAULT" (unspecified) *AND* ensure that any
* "CANT" options have not been SET or DEFINED.
*/
if (SELECTED_OPT(pOD)) {
if (pMust != NULL) for (;;) {
tOptDesc* p = pOpts->pOptDesc + *(pMust++);
if (UNUSED_OPT(p)) {
const tOptDesc* pN = pOpts->pOptDesc + pMust[-1];
errCt++;
fprintf( stderr, zReqFmt, pOD->pz_Name, pN->pz_Name );
}
if (*pMust == NO_EQUIVALENT)
break;
}
if (pCant != NULL) for (;;) {
tOptDesc* p = pOpts->pOptDesc + *(pCant++);
if (SELECTED_OPT(p)) {
const tOptDesc* pN = pOpts->pOptDesc + pCant[-1];
errCt++;
fprintf( stderr, zCantFmt, pOD->pz_Name, pN->pz_Name );
}
if (*pCant == NO_EQUIVALENT)
break;
}
}
/*
* IF this option is not equivalenced to another,
* OR it is equivalenced to itself (is the equiv. root)
* THEN we need to make sure it occurs often enough.
*/
if ( (pOD->optEquivIndex == NO_EQUIVALENT)
|| (pOD->optEquivIndex == pOD->optIndex) ) do {
/*
* IF the occurrence counts have been satisfied,
* THEN there is no problem.
*/
if (pOD->optOccCt >= pOD->optMinCt)
break;
/*
* IF MUST_SET means SET and PRESET are okay,
* so min occurrence count doesn't count
*/
if ( (pOD->fOptState & OPTST_MUST_SET)
&& (pOD->fOptState & (OPTST_PRESET | OPTST_SET)) )
break;
errCt++;
if (pOD->optMinCt > 1)
fprintf( stderr, zNotEnough, pOD->pz_Name, pOD->optMinCt );
else fprintf( stderr, zNeedOne, pOD->pz_Name );
} while (0);
if (--oCt <= 0)
break;
pOD++;
}
/*
* IF we are stopping on errors, check to see if any remaining
* arguments are required to be there or prohibited from being there.
*/
if ((pOpts->fOptSet & OPTPROC_ERRSTOP) != 0) {
/*
* Check for prohibition
*/
if ((pOpts->fOptSet & OPTPROC_NO_ARGS) != 0) {
if (pOpts->origArgCt > pOpts->curOptIdx) {
fprintf( stderr, zNoArgs, pOpts->pzProgName );
++errCt;
}
}
/*
* ELSE not prohibited, check for being required
*/
else if ((pOpts->fOptSet & OPTPROC_ARGS_REQ) != 0) {
if (pOpts->origArgCt <= pOpts->curOptIdx) {
fprintf( stderr, zArgsMust, pOpts->pzProgName );
++errCt;
}
}
}
return errCt;
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* THESE ROUTINES ARE CALLABLE FROM THE GENERATED OPTION PROCESSING CODE
*/
/*=--subblock=arg=arg_type,arg_name,arg_desc =*/
/*=*
* library: opts
* header: your-opts.h
*
* lib_description:
*
* These are the routines that libopts users may call directly from their
* code. There are several other routines that can be called by code
* generated by the libopts option templates, but they are not to be
* called from any other user code. The @file{options.h} header is
* fairly clear about this, too.
=*/
/*=export_func optionProcess
*
* what: this is the main option processing routine
*
* arg: + tOptions* + pOpts + program options descriptor +
* arg: + int + argc + program arg count +
* arg: + char** + argv + program arg vector +
*
* ret_type: int
* ret_desc: the count of the arguments processed
*
* doc:
*
* This is the main entry point for processing options. It is intended
* that this procedure be called once at the beginning of the execution of
* a program. Depending on options selected earlier, it is sometimes
* necessary to stop and restart option processing, or to select completely
* different sets of options. This can be done easily, but you generally
* do not want to do this.
*
* The number of arguments processed always includes the program name.
* If one of the arguments is "--", then it is counted and the processing
* stops. If an error was encountered and errors are to be tolerated, then
* the returned value is the index of the argument causing the error.
* A hyphen by itself ("-") will also cause processing to stop and will
* @emph{not} be counted among the processed arguments. A hyphen by itself
* is treated as an operand. Encountering an operand stops option
* processing.
*
* err: Errors will cause diagnostics to be printed. @code{exit(3)} may
* or may not be called. It depends upon whether or not the options
* were generated with the "allow-errors" attribute, or if the
* ERRSKIP_OPTERR or ERRSTOP_OPTERR macros were invoked.
=*/
int
optionProcess(
tOptions* pOpts,
int argCt,
char** argVect )
{
if (! SUCCESSFUL( validateOptionsStruct( pOpts, argVect[0] )))
exit( EX_SOFTWARE );
/*
* Establish the real program name, the program full path,
* and do all the presetting the first time thru only.
*/
if ((pOpts->fOptSet & OPTPROC_INITDONE) == 0) {
pOpts->origArgCt = argCt;
pOpts->origArgVect = argVect;
pOpts->fOptSet |= OPTPROC_INITDONE;
if (! SUCCESSFUL( doPresets( pOpts )))
return 0;
if ((pOpts->fOptSet & OPTPROC_REORDER) != 0)
optionSort( pOpts );
pOpts->curOptIdx = 1;
pOpts->pzCurOpt = NULL;
}
/*
* IF we are (re)starting,
* THEN reset option location
*/
else if (pOpts->curOptIdx <= 0) {
pOpts->curOptIdx = 1;
pOpts->pzCurOpt = NULL;
}
if (! SUCCESSFUL( doRegularOpts( pOpts )))
return pOpts->origArgCt;
/*
* IF there were no errors
* AND we have RC/INI files
* AND there is a request to save the files
* THEN do that now before testing for conflicts.
* (conflicts are ignored in preset options)
*/
if (pOpts->specOptIdx.save_opts != 0) {
tOptDesc* pOD = pOpts->pOptDesc + pOpts->specOptIdx.save_opts;
if (SELECTED_OPT( pOD )) {
optionSaveFile( pOpts );
exit( EXIT_SUCCESS );
}
}
/*
* IF we are checking for errors,
* THEN look for too few occurrences of required options
*/
if ((pOpts->fOptSet & OPTPROC_ERRSTOP) != 0) {
if (checkConsistency( pOpts ) != 0)
(*pOpts->pUsageProc)( pOpts, EXIT_FAILURE );
}
return pOpts->curOptIdx;
}
/*
* Local Variables:
* mode: C
* c-file-style: "stroustrup"
* indent-tabs-mode: nil
* End:
* end of autoopts/autoopts.c */