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/*
* upb - a minimalist implementation of protocol buffers.
*
* Copyright (c) 2010 Google Inc. See LICENSE for details.
* Author: Josh Haberman <jhaberman@gmail.com>
*/
#include "upb/bytestream.h"
#include "upb/descriptor.h"
#include "upb/msg.h"
#include "upb/pb/decoder.h"
#include "upb/pb/glue.h"
#include "upb/pb/textprinter.h"
void upb_strtomsg(const char *str, size_t len, void *msg, upb_msgdef *md,
upb_status *status) {
upb_stringsrc strsrc;
upb_stringsrc_init(&strsrc);
upb_stringsrc_reset(&strsrc, str, len);
upb_decoder d;
upb_handlers *h = upb_handlers_new();
upb_accessors_reghandlers(h, md);
upb_decoder_init(&d, h);
upb_handlers_unref(h);
upb_decoder_reset(&d, upb_stringsrc_bytesrc(&strsrc), 0, UINT64_MAX, msg);
upb_decoder_decode(&d, status);
upb_stringsrc_uninit(&strsrc);
upb_decoder_uninit(&d);
}
#if 0
void upb_msgtotext(upb_string *str, upb_msg *msg, upb_msgdef *md,
bool single_line) {
upb_stringsink strsink;
upb_stringsink_init(&strsink);
upb_stringsink_reset(&strsink, str);
upb_textprinter *p = upb_textprinter_new();
upb_handlers *h = upb_handlers_new();
upb_textprinter_reghandlers(h, md);
upb_textprinter_reset(p, upb_stringsink_bytesink(&strsink), single_line);
upb_status status = UPB_STATUS_INIT;
upb_msg_runhandlers(msg, md, h, p, &status);
// None of {upb_msg_runhandlers, upb_textprinter, upb_stringsink} should be
// capable of returning an error.
assert(upb_ok(&status));
upb_status_uninit(&status);
upb_stringsink_uninit(&strsink);
upb_textprinter_free(p);
upb_handlers_unref(h);
}
#endif
// TODO: read->load.
upb_def **upb_load_descriptor(const char *str, size_t len, int *n,
upb_status *status) {
upb_stringsrc strsrc;
upb_stringsrc_init(&strsrc);
upb_stringsrc_reset(&strsrc, str, len);
upb_handlers *h = upb_handlers_new();
upb_descreader_reghandlers(h);
upb_decoder d;
upb_decoder_init(&d, h);
upb_handlers_unref(h);
upb_descreader r;
upb_descreader_init(&r);
upb_decoder_reset(&d, upb_stringsrc_bytesrc(&strsrc), 0, UINT64_MAX, &r);
upb_decoder_decode(&d, status);
upb_def **defs = upb_descreader_getdefs(&r, n);
upb_def **defscopy = malloc(sizeof(upb_def*) * (*n));
memcpy(defscopy, defs, sizeof(upb_def*) * (*n));
upb_descreader_uninit(&r);
upb_stringsrc_uninit(&strsrc);
upb_decoder_uninit(&d);
// Set default accessors and layouts on all messages.
for(int i = 0; i < *n; i++) {
upb_def *def = defscopy[i];
upb_msgdef *md = upb_dyncast_msgdef(def);
if (!md) continue;
// For field in msgdef:
upb_msg_iter i;
for(i = upb_msg_begin(md); !upb_msg_done(i); i = upb_msg_next(md, i)) {
upb_fielddef *f = upb_msg_iter_field(i);
upb_fielddef_setaccessor(f, upb_stdmsg_accessor(f));
}
upb_msgdef_layout(md);
}
return defscopy;
}
void upb_read_descriptor(upb_symtab *s, const char *str, size_t len,
upb_status *status) {
int n;
upb_def **defs = upb_load_descriptor(str, len, &n, status);
if (upb_ok(status)) upb_symtab_add(s, defs, n, status);
for(int i = 0; i < n; i++) upb_def_unref(defs[i]);
free(defs);
}
char *upb_readfile(const char *filename, size_t *len) {
FILE *f = fopen(filename, "rb");
if(!f) return NULL;
if(fseek(f, 0, SEEK_END) != 0) goto error;
long size = ftell(f);
if(size < 0) goto error;
if(fseek(f, 0, SEEK_SET) != 0) goto error;
char *buf = malloc(size);
if(fread(buf, size, 1, f) != 1) goto error;
fclose(f);
if (len) *len = size;
return buf;
error:
fclose(f);
return NULL;
}
void upb_read_descriptorfile(upb_symtab *symtab, const char *fname,
upb_status *status) {
size_t len;
char *data = upb_readfile(fname, &len);
if (!data) {
upb_status_seterrf(status, "Couldn't read file: %s", fname);
return;
}
upb_read_descriptor(symtab, data, len, status);
free(data);
}
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