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/* option utilities library
Copyright 1998 Gene McCulley <mcculley@cuspy.com>, Cuspy Solutions, Inc.
This program is free software; you can 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 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include "config.h"
#include "optutil.h"
XtResource *OU_GetResources(const ResourceOption *ros, unsigned num_ros)
{
unsigned k;
XtResource *resources = (XtResource *)XtMalloc(sizeof(XtResource) * num_ros);
for (k = 0; k < num_ros; k++)
resources[k] = ros[k].resource;
return resources;
}
XrmOptionDescRec *OU_GetOptions(const ResourceOption *ros, unsigned num_ros)
{
unsigned k;
XrmOptionDescRec *options =
(XrmOptionDescRec *)XtMalloc(sizeof(XrmOptionDescRec) * num_ros);
for (k = 0; k < num_ros; k++)
options[k] = ros[k].option;
return options;
}
void OU_DumpOptions(const ResourceOption *ros, unsigned num_ros, FILE *fp)
{
unsigned j;
unsigned biggest_option = 0;
unsigned biggest_description = 0;
const unsigned spacing = 2; /* Spacing between categories in help output. */
const char format_template[] = "%%-%us%%-%us";
char format[sizeof(format_template)]; /* Here we are assuming that the result
is never bigger than the template. */
for (j = 0; j < num_ros; j++) {
unsigned option_length = strlen(ros[j].option.option) +
(ros[j].parameters ? strlen(ros[j].parameters) + 1 : 0);
/* The 1 here is a space added between the
option and its parameter description, if it
has one. */
if (option_length > biggest_option)
biggest_option = option_length;
if (strlen(ros[j].help) > biggest_description)
biggest_description = strlen(ros[j].help);
}
assert(sprintf(format, format_template, biggest_option + spacing,
biggest_description + spacing) < (int)(sizeof(format)));
fprintf(fp, format, "Option", "Description");
fprintf(fp, "Default\n");
for (j = 0; j < num_ros; j++) {
char *whole_option = (char *)alloca(biggest_option + 1);
sprintf(whole_option, "%s %s", ros[j].option.option,
ros[j].parameters ? ros[j].parameters : "");
fprintf(fp, format, whole_option, ros[j].help);
if (ros[j].resource.default_type == XtRString) {
fprintf(fp, "%s\n", (char *)ros[j].resource.default_addr);
}
else {
fprintf(fp, "\nerror: unknown type %s for %s at %s:%d\n",
ros[j].resource.default_type, ros[j].option.option, __FILE__,
__LINE__);
return;
}
}
}
void OU_GetEnvironment(const char *varname, char **argv[], int *argc)
{
char *env_args;
if (!(env_args = getenv(varname)))
return;
else {
unsigned num_args = 0;
char **env_argv = NULL;
char *arg;
while ((arg = strsep(&env_args, " \t\n\r\f\v"))) {
if (strlen(arg)) {
num_args++;
env_argv = (char **)realloc(env_argv, sizeof(char *) * num_args);
env_argv[num_args - 1] = arg;
}
}
if (num_args) {
char **new_argv = (char **)malloc(sizeof(char *) * (num_args + *argc) +
1);
unsigned i;
for (i = 0; i < (unsigned)*argc; i++)
new_argv[i] = (*argv)[i];
for (i = *argc; i < num_args + *argc; i++)
new_argv[i] = env_argv[i - *argc];
new_argv[i] = NULL;
*argv = new_argv;
*argc = num_args + *argc;
}
}
}
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