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/** \file
* Routines to generate text format protobufs.
*
* This file contains the internal support functions as well as the
* exported functions which are used to generate text format protobufs
* from C protobuf data types.
*
* \author Kevin Lyda <kevin@ie.suberic.net>
* \date March 2014
*/
#include "stdafx.h"
#include <stdio.h>
#include <varargs.h>
#include "protobuf-c/protobuf-c-util.h"
/** Internal function to back API function.
*
* Has a few extra params to better enable recursion. This function gets
* called for each nested message as the \c ProtobufCMessage struct is
* traversed.
*
* \param[in,out] rs The string being built up for the text format protobuf.
* \param[in] level Indent level - increments in 2's.
* \param[in] m The \c ProtobufCMessage being serialised.
* \param[in] d The descriptor for the \c ProtobufCMessage.
* \param[in] allocator allocator functions.
*/
static void
protobuf_c_text_to_string_internal(CMStringA &str,
int level,
const ProtobufCMessage *m,
const ProtobufCMessageDescriptor *d)
{
size_t j, quantifier_offset;
double float_var;
const ProtobufCFieldDescriptor *f;
ProtobufCEnumDescriptor *enumd;
const ProtobufCEnumValue *enumv;
f = d->fields;
for (unsigned i = 0; i < d->n_fields; i++) {
auto &F = f[i];
/* Decide if something needs to be done for this field. */
switch (F.label) {
case PROTOBUF_C_LABEL_OPTIONAL:
if (F.flags & PROTOBUF_C_FIELD_FLAG_ONEOF)
if (STRUCT_MEMBER(unsigned, m, F.quantifier_offset) != F.id)
continue;
if (F.type == PROTOBUF_C_TYPE_STRING) {
if (!STRUCT_MEMBER(char *, m, F.offset)
|| (STRUCT_MEMBER(char *, m, F.offset)
== (char *)F.default_value)) {
continue;
}
}
else if (F.type == PROTOBUF_C_TYPE_MESSAGE) {
if (!STRUCT_MEMBER(char *, m, F.offset)) {
continue;
}
}
else {
if (!STRUCT_MEMBER(protobuf_c_boolean, m, F.quantifier_offset)) {
continue;
}
}
break;
case PROTOBUF_C_LABEL_REPEATED:
if (!STRUCT_MEMBER(size_t, m, F.quantifier_offset)) {
continue;
}
break;
}
quantifier_offset = STRUCT_MEMBER(size_t, m, F.quantifier_offset);
/* Field exists and has data, dump it. */
switch (F.type) {
case PROTOBUF_C_TYPE_INT32:
case PROTOBUF_C_TYPE_UINT32:
case PROTOBUF_C_TYPE_FIXED32:
if (F.label == PROTOBUF_C_LABEL_REPEATED) {
for (j = 0; j < quantifier_offset; j++) {
str.AppendFormat(
"%*s%s: %u\n",
level, "", F.name,
STRUCT_MEMBER(uint32_t *, m, F.offset)[j]);
}
}
else {
str.AppendFormat(
"%*s%s: %u\n",
level, "", F.name,
STRUCT_MEMBER(uint32_t, m, F.offset));
}
break;
case PROTOBUF_C_TYPE_SINT32:
case PROTOBUF_C_TYPE_SFIXED32:
if (F.label == PROTOBUF_C_LABEL_REPEATED) {
for (j = 0; j < quantifier_offset; j++) {
str.AppendFormat(
"%*s%s: %d\n",
level, "", F.name,
STRUCT_MEMBER(int32_t *, m, F.offset)[j]);
}
}
else {
str.AppendFormat(
"%*s%s: %d\n",
level, "", F.name,
STRUCT_MEMBER(int32_t, m, F.offset));
}
break;
case PROTOBUF_C_TYPE_INT64:
case PROTOBUF_C_TYPE_UINT64:
case PROTOBUF_C_TYPE_FIXED64:
if (F.label == PROTOBUF_C_LABEL_REPEATED) {
for (j = 0; j < quantifier_offset; j++) {
str.AppendFormat(
"%*s%s: %lu\n",
level, "", F.name,
STRUCT_MEMBER(uint64_t *, m, F.offset)[j]);
}
}
else {
str.AppendFormat(
"%*s%s: %lu\n",
level, "", F.name,
STRUCT_MEMBER(uint64_t, m, F.offset));
}
break;
case PROTOBUF_C_TYPE_SINT64:
case PROTOBUF_C_TYPE_SFIXED64:
if (F.label == PROTOBUF_C_LABEL_REPEATED) {
for (j = 0; j < quantifier_offset; j++) {
str.AppendFormat(
"%*s%s: %ld\n",
level, "", F.name,
STRUCT_MEMBER(int64_t *, m, F.offset)[j]);
}
}
else {
str.AppendFormat(
"%*s%s: %ld\n",
level, "", F.name,
STRUCT_MEMBER(int64_t, m, F.offset));
}
break;
case PROTOBUF_C_TYPE_FLOAT:
if (F.label == PROTOBUF_C_LABEL_REPEATED) {
for (j = 0; j < quantifier_offset; j++) {
float_var = STRUCT_MEMBER(float *, m, F.offset)[j];
str.AppendFormat(
"%*s%s: %g\n",
level, "", F.name,
float_var);
}
}
else {
float_var = STRUCT_MEMBER(float, m, F.offset);
str.AppendFormat(
"%*s%s: %g\n",
level, "", F.name,
float_var);
}
break;
case PROTOBUF_C_TYPE_DOUBLE:
if (F.label == PROTOBUF_C_LABEL_REPEATED) {
for (j = 0; j < quantifier_offset; j++) {
str.AppendFormat(
"%*s%s: %g\n",
level, "", F.name,
STRUCT_MEMBER(double *, m, F.offset)[j]);
}
}
else {
str.AppendFormat(
"%*s%s: %g\n",
level, "", F.name,
STRUCT_MEMBER(double, m, F.offset));
}
break;
case PROTOBUF_C_TYPE_BOOL:
if (F.label == PROTOBUF_C_LABEL_REPEATED) {
for (j = 0; j < quantifier_offset; j++) {
str.AppendFormat(
"%*s%s: %s\n",
level, "", F.name,
STRUCT_MEMBER(protobuf_c_boolean *, m, F.offset)[j] ?
"true" : "false");
}
}
else {
str.AppendFormat(
"%*s%s: %s\n",
level, "", F.name,
STRUCT_MEMBER(protobuf_c_boolean, m, F.offset) ?
"true" : "false");
}
break;
case PROTOBUF_C_TYPE_ENUM:
enumd = (ProtobufCEnumDescriptor *)F.descriptor;
if (F.label == PROTOBUF_C_LABEL_REPEATED) {
for (j = 0; j < quantifier_offset; j++) {
enumv = protobuf_c_enum_descriptor_get_value(
enumd, STRUCT_MEMBER(int *, m, F.offset)[j]);
str.AppendFormat(
"%*s%s: %s\n",
level, "", F.name,
enumv ? enumv->name : "unknown");
}
}
else {
enumv = protobuf_c_enum_descriptor_get_value(
enumd, STRUCT_MEMBER(int, m, F.offset));
str.AppendFormat(
"%*s%s: %s\n",
level, "", F.name,
enumv ? enumv->name : "unknown");
}
break;
case PROTOBUF_C_TYPE_STRING:
if (F.label == PROTOBUF_C_LABEL_REPEATED) {
for (j = 0; j < quantifier_offset; j++) {
str.AppendFormat(
"%*s%s: \"%s\"\n", level, "", F.name, STRUCT_MEMBER(unsigned char **, m, F.offset)[j]);
}
}
else {
str.AppendFormat(
"%*s%s: \"%s\"\n", level, "", F.name, STRUCT_MEMBER(unsigned char *, m, F.offset));
}
break;
case PROTOBUF_C_TYPE_BYTES:
if (F.label == PROTOBUF_C_LABEL_REPEATED) {
for (j = 0; j < quantifier_offset; j++) {
ProtobufCBinaryData &pData = STRUCT_MEMBER(ProtobufCBinaryData *, m, F.offset)[j];
ptrA tmp((char *)mir_alloc(pData.len * 2 + 1));
bin2hex(pData.data, pData.len, tmp);
str.AppendFormat(
"%*s%s: \"%s\"\n", level, "", F.name, tmp.get());
}
}
else {
ProtobufCBinaryData &pData = STRUCT_MEMBER(ProtobufCBinaryData, m, F.offset);
ptrA tmp((char *)mir_alloc(pData.len * 2 + 1));
bin2hex(pData.data, pData.len, tmp);
str.AppendFormat(
"%*s%s: \"%s\"\n", level, "", F.name, tmp.get());
}
break;
case PROTOBUF_C_TYPE_MESSAGE:
if (F.label == PROTOBUF_C_LABEL_REPEATED) {
for (j = 0;
j < STRUCT_MEMBER(size_t, m, F.quantifier_offset);
j++) {
str.AppendFormat(
"%*s%s {\n", level, "", F.name);
protobuf_c_text_to_string_internal(str, level + 2,
STRUCT_MEMBER(ProtobufCMessage **, m, F.offset)[j],
(ProtobufCMessageDescriptor *)F.descriptor);
str.AppendFormat(
"%*s}\n", level, "");
}
}
else {
str.AppendFormat(
"%*s%s {\n", level, "", F.name);
protobuf_c_text_to_string_internal(str, level + 2,
STRUCT_MEMBER(ProtobufCMessage *, m, F.offset),
(ProtobufCMessageDescriptor *)F.descriptor);
str.AppendFormat(
"%*s}\n", level, "");
}
break;
default:
return;
}
}
}
/** @} */ /* End of generate group. */
/* See .h file for API docs. */
CMStringA protobuf_c_text_to_string(const ProtobufCMessage *m)
{
CMStringA res;
protobuf_c_text_to_string_internal(res, 0, m, m->descriptor);
return res;
}
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