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/*
** Copyright 2007 Double Precision, Inc.
** See COPYING for distribution information.
*/
/*
*/
#include "cgi.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
static void do_cgi_select(const char *name,
const char *optvalues,
const char *optlabels,
const char *default_value,
size_t list_size,
const char *flags,
void (*output_func)(const char *, size_t, void *),
void *output_arg)
{
(*output_func)("<select name='", 0, output_arg);
(*output_func)(name, 0, output_arg);
(*output_func)("'", 0, output_arg);
if (strchr(flags, 'm'))
(*output_func)(" multiple='multiple'", 0, output_arg);
if (strchr(flags, 'd'))
(*output_func)(" disabled='disabled'", 0, output_arg);
(*output_func)("'>", 0, output_arg);
if (!optvalues)
optvalues="";
while (*optlabels)
{
const char *label_start=optlabels;
const char *value_start=optvalues;
while (*optlabels)
{
if (*optlabels == '\n')
break;
++optlabels;
}
while (*optvalues)
{
if (*optvalues == '\n')
break;
++optvalues;
}
(*output_func)("<option", 0, output_arg);
if (*value_start)
{
if (default_value &&
optvalues - value_start == strlen(default_value) &&
strncmp(value_start, default_value,
optvalues-value_start) == 0)
{
(*output_func)(" selected='selected'", 0,
output_arg);
}
(*output_func)(" value='", 0, output_arg);
(*output_func)(value_start, optvalues-value_start,
output_arg);
(*output_func)("'", 0, output_arg);
}
(*output_func)(">", 0, output_arg);
(*output_func)(label_start, optlabels-label_start, output_arg);
(*output_func)("</option>", 0, output_arg);
if (*optlabels)
++optlabels;
if (*optvalues)
++optvalues;
}
(*output_func)("</select>", 0, output_arg);
}
static void cnt_bytes(const char *str, size_t cnt, void *arg)
{
if (!cnt)
cnt=strlen(str);
*(size_t *)arg += cnt;
}
static void save_bytes(const char *str, size_t cnt, void *arg)
{
char **p=(char **)arg;
if (!cnt)
cnt=strlen(str);
memcpy(*p, str, cnt);
*p += cnt;
}
char *cgi_select(const char *name,
const char *optvalues,
const char *optlabels,
const char *default_value,
size_t list_size,
const char *flags)
{
size_t cnt=1;
char *buf;
char *ptr;
if (!flags)
flags="";
do_cgi_select(name, optvalues, optlabels, default_value,
list_size, flags, cnt_bytes, &cnt);
buf=malloc(cnt);
if (!buf)
return NULL;
ptr=buf;
do_cgi_select(name, optvalues, optlabels, default_value,
list_size, flags, save_bytes, &ptr);
*ptr=0;
return buf;
}
