popt.c File Reference

#include "system.h"
#include <math.h>
#include "findme.h"
#include "poptint.h"

Include dependency graph for popt.c:

Go to the source code of this file.

Defines

#define _ABS(a)   ((((a) - 0.0) < DBL_EPSILON) ? -(a) : (a))

Functions

static char * strerror (int errno)
void poptSetExecPath (poptContext con, const char *path, int allowAbsolute)
 Limit search for executables.
static void invokeCallbacksPRE (poptContext con, const struct poptOption *opt)
static void invokeCallbacksPOST (poptContext con, const struct poptOption *opt)
static void invokeCallbacksOPTION (poptContext con, const struct poptOption *opt, const struct poptOption *myOpt, const void *myData, int shorty)
poptContext poptGetContext (const char *name, int argc, const char **argv, const struct poptOption *options, unsigned int flags)
 Initialize popt context.
static void cleanOSE (struct optionStackEntry *os)
void poptResetContext (poptContext con)
 Reinitialize popt context.
static int handleExec (poptContext con, const char *longName, char shortName)
static int handleAlias (poptContext con, const char *longName, char shortName, const char *nextCharArg)
static int execCommand (poptContext con)
static struct poptOptionfindOption (const struct poptOption *opt, const char *longName, int longNameLen, char shortName, poptCallbackType *callback, const void **callbackData, int singleDash)
static const char * findNextArg (poptContext con, unsigned argx, int delete_arg)
static const char * expandNextArg (poptContext con, const char *s)
static void poptStripArg (poptContext con, int which)
int poptSaveLong (long *arg, unsigned int argInfo, long aLong)
 Save a long, performing logical operation with value.
int poptSaveInt (int *arg, unsigned int argInfo, long aLong)
 Save an integer, performing logical operation with value.
int poptGetNextOpt (poptContext con)
 Return value of next option found.
const char * poptGetOptArg (poptContext con)
 Return next option argument (if any).
const char * poptGetArg (poptContext con)
 Return next argument.
const char * poptPeekArg (poptContext con)
 Peek at current argument.
const char ** poptGetArgs (poptContext con)
 Return remaining arguments.
poptContext poptFreeContext (poptContext con)
 Destroy context.
int poptAddAlias (poptContext con, struct poptAlias alias, int flags)
 Add alias to context.
int poptAddItem (poptContext con, poptItem newItem, int flags)
 Add alias/exec item to context.
const char * poptBadOption (poptContext con, unsigned int flags)
 Return the option which caused the most recent error.
const char * poptStrerror (const int error)
 Return formatted error string for popt failure.
int poptStuffArgs (poptContext con, const char **argv)
 Add arguments to context.
const char * poptGetInvocationName (poptContext con)
 Return argv[0] from context.
int poptStrippedArgv (poptContext con, int argc, char **argv)
 Shuffle argv pointers to remove stripped args, returns new argc.

Variables

static unsigned int seed = 0


Define Documentation

#define _ABS (  )     ((((a) - 0.0) < DBL_EPSILON) ? -(a) : (a))


Function Documentation

static void cleanOSE ( struct optionStackEntry os  )  [static]

Definition at line 224 of file popt.c.

References optionStackEntry::argb, poptContext_s::optionStack, poptContext_s::os, and PBM_FREE.

Referenced by poptGetNextOpt().

static int execCommand ( poptContext  con  )  [static]

< errno set, use strerror(errno)

< missing argument

< missing argument

< memory allocation failed

< missing argument

Definition at line 384 of file popt.c.

static const char* expandNextArg ( poptContext  con,
const char *  s 
) [static]

Definition at line 599 of file popt.c.

References findNextArg().

static const char* findNextArg ( poptContext  con,
unsigned  argx,
int  delete_arg 
) [static]

Definition at line 560 of file popt.c.

References optionStackEntry::argb, optionStackEntry::argc, optionStackEntry::argv, PBM_ALLOC, PBM_ISSET, and PBM_SET.

Referenced by expandNextArg().

static struct poptOption* findOption ( const struct poptOption opt,
const char *  longName,
int  longNameLen,
char  shortName,
poptCallbackType callback,
const void **  callbackData,
int  singleDash 
) [static, read]

< arg points to table

< table-wide callback... must be set first in table; arg points to callback, descrip points to callback data to pass

< allow -longoption

< use data from the include line, not the subtable

Definition at line 485 of file popt.c.

References poptOption::arg, poptOption::argInfo, poptOption::descrip, POPT_ARG_INCLUDE_TABLE, POPT_ARG_MASK, poptHelpOptions, and poptHelpOptionsI18N.

static int handleAlias ( poptContext  con,
const char *  longName,
char  shortName,
const char *  nextCharArg 
) [static]

< aliases nested too deeply

Definition at line 329 of file popt.c.

References poptOption::longName, poptItem_s::option, and poptOption::shortName.

static int handleExec ( poptContext  con,
const char *  longName,
char  shortName 
) [static]

< ignore exec expansions

Definition at line 271 of file popt.c.

References poptContext_s::execs, poptOption::longName, poptItem_s::option, and poptOption::shortName.

static void invokeCallbacksOPTION ( poptContext  con,
const struct poptOption opt,
const struct poptOption myOpt,
const void *  myData,
int  shorty 
) [static]

< arg points to table

< table-wide callback... must be set first in table; arg points to callback, descrip points to callback data to pass

< don't callback with option

< continue callbacks with option

Definition at line 126 of file popt.c.

References poptOption::arg, poptOption::argInfo, poptOption::longName, POPT_ARG_CALLBACK, POPT_ARG_INCLUDE_TABLE, POPT_ARG_MASK, POPT_CBFLAG_SKIPOPTION, poptHelpOptions, poptHelpOptionsI18N, and poptOption::shortName.

static void invokeCallbacksPOST ( poptContext  con,
const struct poptOption opt 
) [static]

< arg points to table

< table-wide callback... must be set first in table; arg points to callback, descrip points to callback data to pass

< call the callback after parse

Definition at line 95 of file popt.c.

References poptOption::arg, poptOption::argInfo, poptOption::descrip, poptOption::longName, POPT_ARG_CALLBACK, POPT_ARG_INCLUDE_TABLE, POPT_ARG_MASK, POPT_CALLBACK_REASON_POST, POPT_CBFLAG_POST, poptHelpOptions, poptHelpOptionsI18N, and poptOption::shortName.

static void invokeCallbacksPRE ( poptContext  con,
const struct poptOption opt 
) [static]

< arg points to table

< table-wide callback... must be set first in table; arg points to callback, descrip points to callback data to pass

< call the callback before parse

Definition at line 64 of file popt.c.

References poptOption::arg, poptOption::argInfo, poptOption::descrip, poptOption::longName, POPT_ARG_CALLBACK, POPT_ARG_INCLUDE_TABLE, POPT_ARG_MASK, POPT_CALLBACK_REASON_PRE, POPT_CBFLAG_PRE, poptHelpOptions, poptHelpOptionsI18N, and poptOption::shortName.

int poptAddAlias ( poptContext  con,
struct poptAlias  alias,
int  flags 
)

Add alias to context.

Todo:
Pass alias by reference, not value.
Deprecated:
Use poptAddItem instead.
Parameters:
con context
alias alias to add
flags (unused)
Returns:
0 on success

< don't show in help/usage

Definition at line 1151 of file popt.c.

int poptAddItem ( poptContext  con,
poptItem  newItem,
int  flags 
)

Add alias/exec item to context.

Parameters:
con context
newItem alias/exec item to add
flags 0 for alias, 1 for exec
Returns:
0 on success

Definition at line 1170 of file popt.c.

const char* poptBadOption ( poptContext  con,
unsigned int  flags 
)

Return the option which caused the most recent error.

Parameters:
con context
flags 
Returns:
offending option

< don't go into an alias

Definition at line 1214 of file popt.c.

poptContext poptFreeContext ( poptContext  con  ) 

Destroy context.

Parameters:
con context
Returns:
NULL always

Definition at line 1107 of file popt.c.

Referenced by displayArgs().

const char* poptGetArg ( poptContext  con  ) 

Return next argument.

Parameters:
con context
Returns:
next argument, NULL if no argument is available

Definition at line 1075 of file popt.c.

const char** poptGetArgs ( poptContext  con  ) 

Return remaining arguments.

Parameters:
con context
Returns:
argument array, NULL terminated

Definition at line 1092 of file popt.c.

References _free(), poptContext_s::aliases, optionStackEntry::argb, poptContext_s::numAliases, poptContext_s::os, and poptResetContext().

poptContext poptGetContext ( const char *  name,
int  argc,
const char **  argv,
const struct poptOption options,
unsigned int  flags 
)

Initialize popt context.

Parameters:
name context name (usually argv[0] program name)
argc no. of arguments
argv argument array
options address of popt option table
flags or'd POPT_CONTEXT_* bits
Returns:
initialized popt context

< pay attention to argv[0]

< options can't follow args

Definition at line 177 of file popt.c.

const char* poptGetInvocationName ( poptContext  con  ) 

Return argv[0] from context.

Parameters:
con context
Returns:
argv[0]

Definition at line 1275 of file popt.c.

References poptContext_s::arg_strip, and PBM_ISSET.

int poptGetNextOpt ( poptContext  con  ) 

Return value of next option found.

Parameters:
con context
Returns:
next option val, -1 on last item, POPT_ERROR_* on error

< unknown option

< options can't follow args

< return args as options with value 0

< unknown option

< unknown option

< strip this arg from argv(only applies to long args)

< unknown option

< unknown option

< no arg

< mutually exclusive logical operations requested

< arg should take value val

< mutually exclusive logical operations requested

< no arg

< arg may be missing

< missing argument

< strip this arg from argv(only applies to long args)

< arg may be missing

< arg will be saved as string

< arg will be converted to int

< arg will be converted to long

< invalid numeric value

< arg will be converted to long

< number too large or too small

< mutually exclusive logical operations requested

< number too large or too small

< mutually exclusive logical operations requested

< arg will be converted to float

< arg will be converted to double

< number too large or too small

< invalid numeric value

< arg will be converted to double

< number too large or too small

< number too large or too small

< return (*arg) (argc, argv)

< arg should take value val

< allow -longoption

< no arg

< arg should take value val

< no arg

Definition at line 745 of file popt.c.

References cleanOSE(), and poptContext_s::os.

const char* poptGetOptArg ( poptContext  con  ) 

Return next option argument (if any).

Parameters:
con context
Returns:
option argument, NULL if no argument is available

Definition at line 1063 of file popt.c.

References poptContext_s::leftovers, poptContext_s::nextLeftover, and poptContext_s::numLeftovers.

const char* poptPeekArg ( poptContext  con  ) 

Peek at current argument.

Parameters:
con context
Returns:
current argument, NULL if no argument is available

Definition at line 1083 of file popt.c.

void poptResetContext ( poptContext  con  ) 

Reinitialize popt context.

Parameters:
con context

Definition at line 235 of file popt.c.

References _free(), and poptContext_s::finalArgv.

Referenced by poptGetArgs().

int poptSaveInt ( int *  arg,
unsigned int  argInfo,
long  aLong 
)

Save an integer, performing logical operation with value.

Warning:
Alignment check may be too strict on certain platorms.
Parameters:
arg integer pointer, aligned on int boundary.
argInfo logical operation (see POPT_ARGFLAG_*)
aLong value to use
Returns:
0 on success, POPT_ERROR_NULLARG/POPT_ERROR_BADOPERATION

< opt->arg should not be NULL

< arg will be negated

< arg will be or'ed

< arg will be and'ed

< arg will be xor'ed

< arg will be or'ed

< arg will be and'ed

< arg will be xor'ed

< mutually exclusive logical operations requested

Definition at line 706 of file popt.c.

int poptSaveLong ( long *  arg,
unsigned int  argInfo,
long  aLong 
)

Save a long, performing logical operation with value.

Warning:
Alignment check may be too strict on certain platorms.
Parameters:
arg integer pointer, aligned on int boundary.
argInfo logical operation (see POPT_ARGFLAG_*)
aLong value to use
Returns:
0 on success, POPT_ERROR_NULLARG/POPT_ERROR_BADOPERATION

< opt->arg should not be NULL

< arg will be negated

< arg will be or'ed

< arg will be and'ed

< arg will be xor'ed

< arg will be or'ed

< arg will be and'ed

< arg will be xor'ed

< mutually exclusive logical operations requested

Definition at line 668 of file popt.c.

void poptSetExecPath ( poptContext  con,
const char *  path,
int  allowAbsolute 
)

Limit search for executables.

Parameters:
con context
path single path to search for executables
allowAbsolute absolute paths only?

Definition at line 54 of file popt.c.

References _free(), poptContext_s::execAbsolute, poptContext_s::execPath, and xstrdup.

const char* poptStrerror ( const int  error  ) 

Return formatted error string for popt failure.

Parameters:
error popt error
Returns:
error string

< missing argument

< unknown option

< mutually exclusive logical operations requested

< opt->arg should not be NULL

< aliases nested too deeply

< error in paramter quoting

< invalid numeric value

< number too large or too small

< memory allocation failed

< errno set, use strerror(errno)

Definition at line 1224 of file popt.c.

static void poptStripArg ( poptContext  con,
int  which 
) [static]

Definition at line 648 of file popt.c.

int poptStrippedArgv ( poptContext  con,
int  argc,
char **  argv 
)

Shuffle argv pointers to remove stripped args, returns new argc.

Parameters:
con context
argc no. of args
argv arg vector
Returns:
new argc

Definition at line 1281 of file popt.c.

References poptContext_s::arg_strip, and PBM_ISSET.

int poptStuffArgs ( poptContext  con,
const char **  argv 
)

Add arguments to context.

Parameters:
con context
argv argument array, NULL terminated
Returns:
0 on success, POPT_ERROR_OPTSTOODEEP on failure

< aliases nested too deeply

Definition at line 1252 of file popt.c.

static char* strerror ( int  errno  )  [static]

Definition at line 27 of file popt.c.

References POPT_.


Variable Documentation

unsigned int seed = 0 [static]

Definition at line 665 of file popt.c.


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