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#include <cdk_int.h>
/*
* Useful functions for command-line parsing.
*
* $Author: tom $
* $Date: 2003/11/29 16:03:15 $
* $Revision: 1.5 $
*/
#define OPTION_ON ((char *)1)
#define OPTION_OFF ((char *)0)
static void usage (char **argv,
CDK_PARAMS * params,
char *options)
{
int n;
char *str;
fprintf (stderr, "Usage: %s [options]\n\nOptions:\n", baseName (argv[0]));
for (n = 1; n < MAX_CDK_PARAMS; ++n)
{
if (n != ':'
&& (str = strchr (options, n)) != 0)
{
int value = (str[1] == ':');
fprintf (stderr, " -%c", n);
if (value)
{
fprintf (stderr, " (%s)\n",
(params->allParams[n]
? params->allParams[n]
: "not set"));
}
else
{
fprintf (stderr, " (%s)\n",
(params->allParams[n]
? "set"
: "not set"));
}
}
}
exit (EXIT_FAILURE);
}
static int CDKparseSize (char *string, int fullSize)
{
int result;
if (strcmp (string, "FULL") == 0)
{
result = fullSize;
}
else
{
result = (int)atoi (string);
}
return result;
}
/*
* Parse the string as one of CDK's positioning keywords, or an actual
* position.
*/
int CDKparsePosition (char *string)
{
int result;
if (string == 0)
{
result = NONE;
}
else if (strcmp (string, "TOP") == 0)
{
result = TOP;
}
else if (strcmp (string, "BOTTOM") == 0)
{
result = BOTTOM;
}
else if (strcmp (string, "LEFT") == 0)
{
result = LEFT;
}
else if (strcmp (string, "RIGHT") == 0)
{
result = RIGHT;
}
else if (strcmp (string, "CENTER") == 0)
{
result = CENTER;
}
else
{
result = (int)atoi (string);
}
return result;
}
/*
* Parse the given argc/argv command-line, with the options passed to
* getopt()'s 3rd parameter.
*/
void CDKparseParams (int argc,
char **argv,
CDK_PARAMS * params,
char *options)
{
int code;
char *str;
memset (params, 0, sizeof (*params));
params->Box = TRUE;
while ((code = getopt (argc, argv, options)) != EOF)
{
if (code == '?' || (str = strchr (options, code)) == 0)
{
usage (argv, params, options);
}
else
{
params->allParams[code] = OPTION_ON;
if (str[1] == ':')
{
params->allParams[code] = optarg;
}
switch (code)
{
case 'W':
params->wValue = CDKparseSize (optarg, FULL);
break;
case 'H':
params->hValue = CDKparseSize (optarg, FULL);
break;
case 'X':
params->xValue = CDKparsePosition (optarg);
break;
case 'Y':
params->yValue = CDKparsePosition (optarg);
break;
case 'N':
params->Box = FALSE;
break;
case 'S':
params->Shadow = TRUE;
break;
}
}
}
}
/*
* Retrieve a numeric option-value, default=0.
*/
int CDKparamNumber (CDK_PARAMS * params, int option)
{
return CDKparamNumber2 (params, option, 0);
}
/*
* Retrieve a numeric option-value, given default.
*/
int CDKparamNumber2 (CDK_PARAMS * params, int option, int missing)
{
return CDKparamValue (params, option, missing);
}
/*
* Retrieve the string value of an option, default=0.
*/
char *CDKparamString (CDK_PARAMS * params, int option)
{
return CDKparamString2 (params, option, 0);
}
/*
* Retrieve the string value of an option, with default for missing value.
*/
char *CDKparamString2 (CDK_PARAMS * params, int option, char *missing)
{
char *value = ((option > 0 && option < MAX_CDK_PARAMS)
? params->allParams[option]
: 0);
if (value == 0)
value = missing;
return value;
}
/*
* Retrieve an integer (or boolean) option value from the parsed command-line.
* (prefer: CDKparamNumber).
*/
int CDKparamValue (CDK_PARAMS * params, int option, int missing)
{
int result;
char *value = CDKparamString (params, option);
if (value == 0)
{
result = missing;
}
else if (strchr (CDK_CLI_PARAMS, option) != 0)
{
switch (option)
{
case 'H':
result = params->hValue;
break;
case 'W':
result = params->wValue;
break;
case 'X':
result = params->xValue;
break;
case 'Y':
result = params->yValue;
break;
case 'N':
result = params->Box;
break;
case 'S':
result = params->Shadow;
break;
default:
result = missing;
break;
}
}
else if (value == OPTION_ON)
{
result = 1;
}
else
{
result = atoi (value);
}
return result;
}
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