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/*
* upb - a minimalist implementation of protocol buffers.
*
* Copyright (c) 2010 Joshua Haberman. See LICENSE for details.
*/
#include "upb_strstream.h"
#include <stdlib.h>
#include "upb_string.h"
struct upb_stringsrc {
upb_bytesrc bytesrc;
upb_string *str;
};
void upb_stringsrc_reset(upb_stringsrc *s, upb_string *str) {
if (str != s->str) {
if (s->str) upb_string_unref(s->str);
s->str = upb_string_getref(str);
}
s->bytesrc.eof = false;
}
void upb_stringsrc_free(upb_stringsrc *s) {
if (s->str) upb_string_unref(s->str);
free(s);
}
static bool upb_stringsrc_get(upb_stringsrc *src, upb_string *str,
upb_strlen_t minlen) {
// We ignore "minlen" since we always return the entire string.
(void)minlen;
upb_string_substr(str, src->str, 0, upb_string_len(src->str));
src->bytesrc.eof = true;
return true;
}
static bool upb_stringsrc_append(upb_stringsrc *src, upb_string *str,
upb_strlen_t len) {
// Unimplemented; since we return the string via "get" all in one go,
// this method probably isn't very useful.
(void)src;
(void)str;
(void)len;
return false;
}
static upb_bytesrc_vtable upb_stringsrc_vtbl = {
(upb_bytesrc_get_fptr)upb_stringsrc_get,
(upb_bytesrc_append_fptr)upb_stringsrc_append,
};
upb_stringsrc *upb_stringsrc_new() {
upb_stringsrc *s = malloc(sizeof(*s));
s->str = NULL;
upb_bytesrc_init(&s->bytesrc, &upb_stringsrc_vtbl);
return s;
}
upb_bytesrc *upb_stringsrc_bytesrc(upb_stringsrc *s) {
return &s->bytesrc;
}
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