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/*
* Tiny Embedded JavaScript parser
*
* Copyright 2005, Broadcom Corporation
* All Rights Reserved.
*
* THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
* KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
* SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
*
* $Id: ej.c,v 1.9 2005/03/07 08:35:32 kanki Exp $
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <ctype.h>
#include "httpd.h"
static char * get_arg(char *args, char **next);
//static void call(char *func, FILE *stream);
static void call(char *func, webs_t stream);
/* Look for unquoted character within a string */
static char *
unqstrstr(char *haystack, char *needle)
{
char *cur;
int q;
for (cur = haystack, q = 0;
cur < &haystack[strlen(haystack)] && !(!q && !strncmp(needle, cur, strlen(needle)));
cur++) {
if (*cur == '"')
q ? q-- : q++;
}
return (cur < &haystack[strlen(haystack)]) ? cur : NULL;
}
static char *
get_arg(char *args, char **next)
{
char *arg, *end;
/* Parse out arg, ... */
if (!(end = unqstrstr(args, ","))) {
end = args + strlen(args);
*next = NULL;
} else
*next = end + 1;
/* Skip whitespace and quotation marks on either end of arg */
for (arg = args; isspace((int)*arg) || *arg == '"'; arg++);
for (*end-- = '\0'; isspace((int)*end) || *end == '"'; end--)
*end = '\0';
return arg;
}
static void
//call(char *func, FILE *stream)
call(char *func, webs_t stream) //jimmy, https, 8/4/2003
{
char *args, *end, *next;
int argc;
char * argv[16];
struct ej_handler *handler;
/* Parse out ( args ) */
if (!(args = strchr(func, '(')))
return;
if (!(end = unqstrstr(func, ")")))
return;
*args++ = *end = '\0';
/* Set up argv list */
for (argc = 0; argc < 16 && args; argc++, args = next) {
if (!(argv[argc] = get_arg(args, &next)))
break;
}
/* Call handler */
for (handler = &ej_handlers[0]; handler->pattern; handler++) {
//if (strncmp(handler->pattern, func, strlen(handler->pattern)) == 0)
if (strcmp(handler->pattern, func) == 0)
handler->output(0, stream, argc, argv);
}
}
void
//do_ej(char *path, FILE *stream)
do_ej(char *path, webs_t stream) // jimmy, https, 8/4/2003
{
FILE *fp;
int c;
char pattern[1000], *asp = NULL, *func = NULL, *end = NULL;
int len = 0;
if (!(fp = fopen(path, "r")))
return;
while ((c = getc(fp)) != EOF) {
/* Add to pattern space */
pattern[len++] = c;
pattern[len] = '\0';
if (len == (sizeof(pattern) - 1))
goto release;
/* Look for <% ... */
if (!asp && !strncmp(pattern, "<%", len)) {
if (len == 2)
asp = pattern + 2;
continue;
}
/* Look for ... %> */
if (asp) {
if (unqstrstr(asp, "%>")) {
for (func = asp; func < &pattern[len]; func = end) {
/* Skip initial whitespace */
for (; isspace((int)*func); func++);
if (!(end = unqstrstr(func, ";")))
break;
*end++ = '\0';
/* Call function */
call(func, stream);
}
asp = NULL;
len = 0;
}
continue;
}
release:
/* Release pattern space */
//fputs(pattern, stream);
if(wfputs(pattern, stream) == EOF) break; //jimmy, https, 8/4/2003
len = 0;
}
fclose(fp);
}
int
ejArgs(int argc, char **argv, char *fmt, ...)
{
va_list ap;
int arg;
char *c;
if (!argv)
return 0;
va_start(ap, fmt);
for (arg = 0, c = fmt; c && *c && arg < argc;) {
if (*c++ != '%')
continue;
switch (*c) {
case 'd':
*(va_arg(ap, int *)) = atoi(argv[arg]);
break;
case 's':
*(va_arg(ap, char **)) = argv[arg];
break;
}
arg++;
}
va_end(ap);
return arg;
}
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