A small memory footprint AMQP implimentation
Dependents: iothub_client_sample_amqp remote_monitoring simplesample_amqp
Diff: amqpvalue_to_string.c
- Revision:
- 0:6ae2f7bca550
- Child:
- 6:641a9672db08
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/amqpvalue_to_string.c Fri Apr 08 12:01:10 2016 -0700 @@ -0,0 +1,671 @@ +// Copyright (c) Microsoft. All rights reserved. +// Licensed under the MIT license. See LICENSE file in the project root for full license information. + +#include <stdlib.h> +#ifdef _CRTDBG_MAP_ALLOC +#include <crtdbg.h> +#endif +#include <stdint.h> +#include <stddef.h> +#include <string.h> +#include <stdio.h> +#include "azure_uamqp_c/amqpvalue_to_string.h" +#include "azure_uamqp_c/amqpvalue.h" +#include "azure_uamqp_c/amqpalloc.h" + +#if _WIN32 +/* The MS runtime does not have snprintf */ +#define snprintf _snprintf +#endif + +static int string_concat(char** string, const char* to_concat) +{ + int result; + + if ((string == NULL) || + (to_concat == NULL)) + { + result = __LINE__; + } + else + { + size_t length = strlen(to_concat) + 1; + size_t src_length; + + if (*string != NULL) + { + src_length = strlen(*string); + } + else + { + src_length = 0; + } + + length += src_length; + + char* new_string = amqpalloc_realloc(*string, length); + if (new_string == NULL) + { + result = __LINE__; + } + else + { + *string = new_string; + (void)strcpy(*string + src_length, to_concat); + result = 0; + } + } + + return result; +} + +char* amqpvalue_to_string(AMQP_VALUE amqp_value) +{ + char* result = NULL; + + if (amqp_value != NULL) + { + AMQP_TYPE amqp_type = amqpvalue_get_type(amqp_value); + switch (amqp_type) + { + default: + result = NULL; + break; + + case AMQP_TYPE_NULL: + if (string_concat(&result, "NULL") != 0) + { + amqpalloc_free(result); + result = NULL; + } + break; + case AMQP_TYPE_BOOL: + { + bool value; + if ((amqpvalue_get_boolean(amqp_value, &value) != 0) || + (string_concat(&result, (value == true) ? "true" : "false") != 0)) + { + amqpalloc_free(result); + result = NULL; + } + break; + } + case AMQP_TYPE_UBYTE: + { + char str_value[4]; + uint8_t value; + if (amqpvalue_get_ubyte(amqp_value, &value) != 0) + { + amqpalloc_free(result); + result = NULL; + } + else + { + unsigned int uint_value = value; + if ((sprintf(str_value, "%u", uint_value) < 0) || + (string_concat(&result, str_value) != 0)) + { + amqpalloc_free(result); + result = NULL; + } + } + break; + } + case AMQP_TYPE_USHORT: + { + char str_value[6]; + uint16_t value; + if (amqpvalue_get_ushort(amqp_value, &value) != 0) + { + amqpalloc_free(result); + result = NULL; + } + else + { + unsigned int uint_value = value; + if ((sprintf(str_value, "%u", uint_value) < 0) || + (string_concat(&result, str_value) != 0)) + { + amqpalloc_free(result); + result = NULL; + } + } + break; + } + case AMQP_TYPE_UINT: + { + char str_value[11]; + uint32_t value; + if (amqpvalue_get_uint(amqp_value, &value) != 0) + { + amqpalloc_free(result); + result = NULL; + } + else + { + unsigned long uint_value = value; + if ((sprintf(str_value, "%lu", uint_value) < 0) || + (string_concat(&result, str_value) != 0)) + { + amqpalloc_free(result); + result = NULL; + } + } + break; + } + case AMQP_TYPE_ULONG: + { + char str_value[21]; + uint64_t value; + if (amqpvalue_get_ulong(amqp_value, &value) != 0) + { + amqpalloc_free(result); + result = NULL; + } + else + { + unsigned long long uint_value = value; + if ((sprintf(str_value, "%llu", uint_value) < 0) || + (string_concat(&result, str_value) != 0)) + { + amqpalloc_free(result); + result = NULL; + } + } + break; + } + case AMQP_TYPE_BYTE: + { + char str_value[5]; + int8_t value; + if (amqpvalue_get_ubyte(amqp_value, &value) != 0) + { + amqpalloc_free(result); + result = NULL; + } + else + { + int int_value = value; + if ((sprintf(str_value, "%d", int_value) < 0) || + (string_concat(&result, str_value) != 0)) + { + amqpalloc_free(result); + result = NULL; + } + } + break; + } + case AMQP_TYPE_SHORT: + { + char str_value[7]; + int16_t value; + if (amqpvalue_get_ushort(amqp_value, &value) != 0) + { + amqpalloc_free(result); + result = NULL; + } + else + { + int int_value = value; + if ((sprintf(str_value, "%d", int_value) < 0) || + (string_concat(&result, str_value) != 0)) + { + amqpalloc_free(result); + result = NULL; + } + } + break; + } + case AMQP_TYPE_INT: + { + char str_value[12]; + int32_t value; + if (amqpvalue_get_int(amqp_value, &value) != 0) + { + amqpalloc_free(result); + result = NULL; + } + else + { + unsigned long int_value = value; + if ((sprintf(str_value, "%ld", int_value) < 0) || + (string_concat(&result, str_value) != 0)) + { + amqpalloc_free(result); + result = NULL; + } + } + break; + } + case AMQP_TYPE_LONG: + { + char str_value[21]; + int64_t value; + if (amqpvalue_get_ulong(amqp_value, &value) != 0) + { + amqpalloc_free(result); + result = NULL; + } + else + { + long long int_value = value; + if ((sprintf(str_value, "%lld", int_value) < 0) || + (string_concat(&result, str_value) != 0)) + { + amqpalloc_free(result); + result = NULL; + } + } + break; + } + case AMQP_TYPE_FLOAT: + { + float float_value; + if (amqpvalue_get_float(amqp_value, &float_value) != 0) + { + amqpalloc_free(result); + result = NULL; + } + else + { + char str_value[25]; + if ((snprintf(str_value, sizeof(str_value), "%.02f", float_value) < 0) || + (string_concat(&result, str_value) != 0)) + { + amqpalloc_free(result); + result = NULL; + } + if (string_concat(&result, str_value) != 0) + { + amqpalloc_free(result); + result = NULL; + } + } + break; + } + case AMQP_TYPE_DOUBLE: + { + double double_value; + if (amqpvalue_get_double(amqp_value, &double_value) != 0) + { + amqpalloc_free(result); + result = NULL; + } + else + { + char str_value[25]; + if ((snprintf(str_value, sizeof(str_value), "%.02lf", double_value) < 0) || + (string_concat(&result, str_value) != 0)) + { + amqpalloc_free(result); + result = NULL; + } + if (string_concat(&result, str_value) != 0) + { + amqpalloc_free(result); + result = NULL; + } + } + break; + } + case AMQP_TYPE_CHAR: + { + uint32_t char_code; + if (amqpvalue_get_char(amqp_value, &char_code) != 0) + { + amqpalloc_free(result); + result = NULL; + } + else + { + char str_value[25]; + if ((snprintf(str_value, sizeof(str_value), "U%02X%02X%02X%02X", char_code >> 24, (char_code >> 16) & 0xFF, (char_code >> 8) & 0xFF, char_code & 0xFF) < 0) || + (string_concat(&result, str_value) != 0)) + { + amqpalloc_free(result); + result = NULL; + } + if (string_concat(&result, str_value) != 0) + { + amqpalloc_free(result); + result = NULL; + } + } + break; + } + case AMQP_TYPE_TIMESTAMP: + { + char str_value[21]; + int64_t value; + if (amqpvalue_get_timestamp(amqp_value, &value) != 0) + { + amqpalloc_free(result); + result = NULL; + } + else + { + long long int_value = value; + if ((sprintf(str_value, "%lld", int_value) < 0) || + (string_concat(&result, str_value) != 0)) + { + amqpalloc_free(result); + result = NULL; + } + } + break; + } + case AMQP_TYPE_UUID: + break; + case AMQP_TYPE_BINARY: + { + amqp_binary binary_value; + if (amqpvalue_get_binary(amqp_value, &binary_value) != 0) + { + amqpalloc_free(result); + result = NULL; + } + else + { + if (string_concat(&result, "<") != 0) + { + amqpalloc_free(result); + result = NULL; + } + else + { + uint64_t i; + + for (i = 0; i < binary_value.length; i++) + { + char str_value[4]; + if ((snprintf(str_value, sizeof(str_value), "%s%02X", (i > 0) ? " " : "", ((unsigned char*)binary_value.bytes)[i]) < 0) || + (string_concat(&result, str_value) != 0)) + { + break; + } + } + + if (i < binary_value.length) + { + amqpalloc_free(result); + result = NULL; + } + else if (string_concat(&result, ">") != 0) + { + amqpalloc_free(result); + result = NULL; + } + } + } + break; + } + case AMQP_TYPE_STRING: + { + const char* string_value; + if (amqpvalue_get_string(amqp_value, &string_value) != 0) + { + amqpalloc_free(result); + result = NULL; + } + else + { + if (string_concat(&result, string_value) != 0) + { + amqpalloc_free(result); + result = NULL; + } + } + break; + } + case AMQP_TYPE_SYMBOL: + { + const char* string_value; + if (amqpvalue_get_symbol(amqp_value, &string_value) != 0) + { + amqpalloc_free(result); + result = NULL; + } + else + { + if (string_concat(&result, string_value) != 0) + { + amqpalloc_free(result); + result = NULL; + } + } + break; + } + case AMQP_TYPE_LIST: + { + uint32_t count; + if ((amqpvalue_get_list_item_count(amqp_value, &count) != 0) || + (string_concat(&result, "{") != 0)) + { + amqpalloc_free(result); + result = NULL; + } + else + { + size_t i; + for (i = 0; i < count; i++) + { + AMQP_VALUE item = amqpvalue_get_list_item(amqp_value, i); + if (item == NULL) + { + break; + } + else + { + char* item_string = amqpvalue_to_string(item); + if (item_string == NULL) + { + amqpvalue_destroy(item); + break; + } + else + { + if ((i > 0) && (string_concat(&result, ",") != 0)) + { + amqpalloc_free(result); + result = NULL; + break; + } + else if (string_concat(&result, item_string) != 0) + { + amqpalloc_free(result); + result = NULL; + break; + } + + amqpalloc_free(item_string); + } + + amqpvalue_destroy(item); + } + } + + if ((i < count) || + (string_concat(&result, "}") != 0)) + { + amqpalloc_free(result); + result = NULL; + } + } + break; + } + case AMQP_TYPE_MAP: + { + uint32_t count; + if ((amqpvalue_get_map_pair_count(amqp_value, &count) != 0) || + (string_concat(&result, "{") != 0)) + { + amqpalloc_free(result); + result = NULL; + } + else + { + size_t i; + for (i = 0; i < count; i++) + { + AMQP_VALUE key; + AMQP_VALUE value; + if (amqpvalue_get_map_key_value_pair(amqp_value, i, &key, &value) != 0) + { + break; + } + else + { + char* key_string = amqpvalue_to_string(key); + if (key_string == NULL) + { + amqpvalue_destroy(key); + amqpvalue_destroy(value); + break; + } + else + { + char* value_string = amqpvalue_to_string(value); + if (key_string == NULL) + { + amqpalloc_free(key_string); + amqpvalue_destroy(key); + amqpvalue_destroy(value); + break; + } + else + { + if (((i > 0) && (string_concat(&result, ",") != 0)) || + (string_concat(&result, "[") != 0) || + (string_concat(&result, key_string) != 0) || + (string_concat(&result, ":") != 0) || + (string_concat(&result, value_string) != 0) || + (string_concat(&result, "]") != 0)) + { + amqpalloc_free(key_string); + amqpalloc_free(value_string); + amqpvalue_destroy(key); + amqpvalue_destroy(value); + break; + } + + amqpalloc_free(value_string); + } + + amqpalloc_free(key_string); + } + + amqpvalue_destroy(key); + amqpvalue_destroy(value); + } + } + + if ((i < count) || + (string_concat(&result, "}") != 0)) + { + amqpalloc_free(result); + result = NULL; + } + } + break; + } + case AMQP_TYPE_ARRAY: + { + uint32_t count; + if ((amqpvalue_get_array_item_count(amqp_value, &count) != 0) || + (string_concat(&result, "{") != 0)) + { + amqpalloc_free(result); + result = NULL; + } + else + { + size_t i; + for (i = 0; i < count; i++) + { + AMQP_VALUE item = amqpvalue_get_array_item(amqp_value, i); + if (item == NULL) + { + break; + } + else + { + char* item_string = amqpvalue_to_string(item); + if (item_string == NULL) + { + amqpvalue_destroy(item); + break; + } + else + { + if ((i > 0) && (string_concat(&result, ",") != 0)) + { + amqpalloc_free(result); + result = NULL; + break; + } + else if (string_concat(&result, item_string) != 0) + { + amqpalloc_free(result); + result = NULL; + break; + } + + amqpalloc_free(item_string); + } + + amqpvalue_destroy(item); + } + } + + if ((i < count) || + (string_concat(&result, "}") != 0)) + { + amqpalloc_free(result); + result = NULL; + } + } + break; + } + case AMQP_TYPE_COMPOSITE: + case AMQP_TYPE_DESCRIBED: + { + AMQP_VALUE described_value = amqpvalue_get_inplace_described_value(amqp_value); + if (described_value == NULL) + { + amqpalloc_free(result); + result = NULL; + } + else + { + if (string_concat(&result, "* ") != 0) + { + amqpalloc_free(result); + result = NULL; + } + else + { + char* described_value_string = amqpvalue_to_string(described_value); + if (described_value_string == NULL) + { + amqpalloc_free(result); + result = NULL; + } + else + { + if (string_concat(&result, described_value_string) != 0) + { + amqpalloc_free(result); + result = NULL; + } + + amqpalloc_free(described_value_string); + } + } + } + break; + } + } + } + + return result; +}