protobuf-c xml 互转

目前已经完成xml 和protobuf-c 相互转换的逻辑；示例代码如下：

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>

#include "xml2pb_help.h"
#include "test.pb-c.h"

static void init_adam(Modetype *alltype)
{
    alltype->enum_field1 = MODETYPE__ENUM_TYPE_E__ENUM_A;
    alltype->n_enum_field2 = 1;
    alltype->enum_field2 = malloc(sizeof(Modetype__EnumTypeE));
    alltype->enum_field2[0] = MODETYPE__ENUM_TYPE_E__ENUM_B;

    alltype->int32_field = 3213;
    alltype->n_int32_field2 = 2;
    alltype->int32_field2 = malloc(sizeof(int32_t) * 2);
    alltype->int32_field2[0] = -245;
    alltype->int32_field2[1] = 20;

    alltype->int64_field = -3332;
    alltype->n_int64_field2 = 1;
    alltype->int64_field2 = malloc(sizeof(int64_t));
    alltype->int64_field2[0] = 33432;


    alltype->float_field = 32.32f;
    alltype->n_float_field2 = 1;
    alltype->float_field2 = malloc(sizeof(float));
    alltype->float_field2[0] = -4332.32f;


    alltype->bool_field = 1;
    alltype->n_bool_field2 = 1;
    alltype->bool_field2 = malloc(sizeof(protobuf_c_boolean));
    alltype->bool_field2[0] = 0;

    static Submsg submsg = SUBMSG__INIT;
    static char str1[32] = "waf_test_str1";
    static char str2[32] = "waf_waf_test_str2";
    static char *str_p[2];
    submsg.n_string_field = 2;
    submsg.string_field = str_p;
    submsg.string_field[0] = str1;
    submsg.string_field[1] = str2;
    alltype->submsg_field = &submsg;


    alltype->has_opt_ipv41 = 1;
    alltype->opt_ipv41 = 0x4e0a430a;
    
    alltype->n_rep_ipv42 = 1;
    alltype->rep_ipv42 = malloc(32);
    alltype->rep_ipv42[0] = 0x20204847;
    
    alltype->has_opt_u32 = 1;
    alltype->opt_u32 = 111111;
}

static void free_adam(Modetype *alltype)
{
    if (alltype) {
        free(alltype->enum_field2);
        free(alltype->int32_field2);
        free(alltype->int64_field2);
        free(alltype->float_field2);
        free(alltype->bool_field2);
        free(alltype->rep_ipv42);
    }
}
//pack_xml_file_to_protobuf
//pack_protobuf_to_xml_file
int main(int argc, char *argv[])
{
    Modetype *ptest = NULL;
    Modetype alltype = MODETYPE__INIT;
    init_adam(&alltype);

    int ret = pack_protobuf_to_xml_file((const ProtobufCMessage*)&alltype,
            "./test1_new.xml", NULL);
    printf("ret = %d\n", ret);
    if (ret != 0) {
        goto error;
    }

    ret = pack_xml_file_to_protobuf("./test1_new.xml", &modetype__descriptor,
            (ProtobufCMessage**)&ptest, NULL);
    printf("ret = %d\n", ret);
    if (ret != 0) {
        goto error;
    }
    ptest->int64_field = 77777;
    ptest->opt_u32 = 99999;
    ptest->has_opt_u32 = 1;
    strcpy_n(ptest->submsg_field->string_field[0], strlen(ptest->submsg_field->string_field[0]), "hello word");
    
    ret = pack_protobuf_to_xml_file((const ProtobufCMessage*)ptest,
            "./test2_test.xml", NULL);
    printf("ret = %d\n", ret);

    free_adam(&alltype);
    modetype__free_unpacked(ptest,NULL);
    return 0;
error:
    free_adam(&alltype);
    return -1;
}

目前 对外提供的接口为：

pack_protobuf_to_xml_file： protobuf 数据写入到xml

pack_xml_file_to_protobuf：读取xml 数据转换为protobuf序列化

测试结果为：

　　目前测试结果显示已经完成了protobuf xml 相互转换的封装！

　　后续继续编写json到protobuf的互转

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