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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>
void cgi_output_unicode_escapes(const char32_t *value,
const char *escapes,
void (*output_func)(const char *, size_t,
void *),
void *output_arg)
{
while (value && *value)
{
size_t i;
for (i=0; value[i]; i++)
{
if (value[i] > 127 ||
strchr(escapes, value[i]))
break;
}
while (i)
{
char buf[100];
size_t n=sizeof(buf);
size_t j;
if (n > i)
n=i;
for (j=0; j<n; j++)
buf[j]=value[j];
(*output_func)(buf, j, output_arg);
value += j;
i -= j;
}
if (*value)
{
char buf[100];
sprintf(buf, "&#%lu;", (unsigned long)value[i]);
(*output_func)(buf, 0, output_arg);
++value;
}
}
}
static void do_cgi_input(const char *name,
const char32_t *value,
int size,
int maxlength,
const char *flags,
void (*output_func)(const char *, size_t,
void *),
void *output_arg)
{
(*output_func)("<input name='", 0, output_arg);
(*output_func)(name, 0, output_arg);
(*output_func)("'", 0, output_arg);
if (strchr(flags, 'r'))
(*output_func)(" readonly='readonly'", 0, output_arg);
if (strchr(flags, 'd'))
(*output_func)(" disabled='disabled'", 0, output_arg);
(*output_func)("'", 0, output_arg);
if (size)
{
char buf[100];
sprintf(buf, " size=%d", size);
(*output_func)(buf, 0, output_arg);
}
if (maxlength)
{
char buf[100];
sprintf(buf, " maxlength=%d", maxlength);
(*output_func)(buf, 0, output_arg);
}
(*output_func)(" value='", 0, output_arg);
cgi_output_unicode_escapes(value, "<>'&", output_func, output_arg);
(*output_func)("' />", 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_input(const char *name,
const char32_t *value,
int size,
int maxlength,
const char *flags)
{
size_t cnt=1;
char *buf;
char *ptr;
if (!flags)
flags="";
do_cgi_input(name, value, size, maxlength, flags, cnt_bytes, &cnt);
buf=malloc(cnt);
if (!buf)
return NULL;
ptr=buf;
do_cgi_input(name, value, size, maxlength, flags, save_bytes, &ptr);
*ptr=0;
return buf;
}
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