test code 123
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nRF51822_Science_Journal/pb_encode.c@1:b0d4fbbdb244, 2016-10-28 (annotated)
- Committer:
- youkee
- Date:
- Fri Oct 28 13:04:10 2016 +0000
- Revision:
- 1:b0d4fbbdb244
- Parent:
- 0:1ad0e04b1bc5
ghhbfdd
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
youkee | 0:1ad0e04b1bc5 | 1 | /* pb_encode.c -- encode a protobuf using minimal resources |
youkee | 0:1ad0e04b1bc5 | 2 | * |
youkee | 0:1ad0e04b1bc5 | 3 | * 2011 Petteri Aimonen <jpa@kapsi.fi> |
youkee | 0:1ad0e04b1bc5 | 4 | */ |
youkee | 0:1ad0e04b1bc5 | 5 | |
youkee | 0:1ad0e04b1bc5 | 6 | #include "pb.h" |
youkee | 0:1ad0e04b1bc5 | 7 | #include "pb_encode.h" |
youkee | 0:1ad0e04b1bc5 | 8 | #include "pb_common.h" |
youkee | 0:1ad0e04b1bc5 | 9 | |
youkee | 0:1ad0e04b1bc5 | 10 | /* Use the GCC warn_unused_result attribute to check that all return values |
youkee | 0:1ad0e04b1bc5 | 11 | * are propagated correctly. On other compilers and gcc before 3.4.0 just |
youkee | 0:1ad0e04b1bc5 | 12 | * ignore the annotation. |
youkee | 0:1ad0e04b1bc5 | 13 | */ |
youkee | 0:1ad0e04b1bc5 | 14 | #if !defined(__GNUC__) || ( __GNUC__ < 3) || (__GNUC__ == 3 && __GNUC_MINOR__ < 4) |
youkee | 0:1ad0e04b1bc5 | 15 | #define checkreturn |
youkee | 0:1ad0e04b1bc5 | 16 | #else |
youkee | 0:1ad0e04b1bc5 | 17 | #define checkreturn __attribute__((warn_unused_result)) |
youkee | 0:1ad0e04b1bc5 | 18 | #endif |
youkee | 0:1ad0e04b1bc5 | 19 | |
youkee | 0:1ad0e04b1bc5 | 20 | /************************************** |
youkee | 0:1ad0e04b1bc5 | 21 | * Declarations internal to this file * |
youkee | 0:1ad0e04b1bc5 | 22 | **************************************/ |
youkee | 0:1ad0e04b1bc5 | 23 | typedef bool (*pb_encoder_t)(pb_ostream_t *stream, const pb_field_t *field, const void *src) checkreturn; |
youkee | 0:1ad0e04b1bc5 | 24 | |
youkee | 0:1ad0e04b1bc5 | 25 | static bool checkreturn buf_write(pb_ostream_t *stream, const pb_byte_t *buf, size_t count); |
youkee | 0:1ad0e04b1bc5 | 26 | static bool checkreturn encode_array(pb_ostream_t *stream, const pb_field_t *field, const void *pData, size_t count, pb_encoder_t func); |
youkee | 0:1ad0e04b1bc5 | 27 | static bool checkreturn encode_field(pb_ostream_t *stream, const pb_field_t *field, const void *pData); |
youkee | 0:1ad0e04b1bc5 | 28 | static bool checkreturn default_extension_encoder(pb_ostream_t *stream, const pb_extension_t *extension); |
youkee | 0:1ad0e04b1bc5 | 29 | static bool checkreturn encode_extension_field(pb_ostream_t *stream, const pb_field_t *field, const void *pData); |
youkee | 0:1ad0e04b1bc5 | 30 | static bool checkreturn pb_enc_varint(pb_ostream_t *stream, const pb_field_t *field, const void *src); |
youkee | 0:1ad0e04b1bc5 | 31 | static bool checkreturn pb_enc_uvarint(pb_ostream_t *stream, const pb_field_t *field, const void *src); |
youkee | 0:1ad0e04b1bc5 | 32 | static bool checkreturn pb_enc_svarint(pb_ostream_t *stream, const pb_field_t *field, const void *src); |
youkee | 0:1ad0e04b1bc5 | 33 | static bool checkreturn pb_enc_fixed32(pb_ostream_t *stream, const pb_field_t *field, const void *src); |
youkee | 0:1ad0e04b1bc5 | 34 | static bool checkreturn pb_enc_fixed64(pb_ostream_t *stream, const pb_field_t *field, const void *src); |
youkee | 0:1ad0e04b1bc5 | 35 | static bool checkreturn pb_enc_bytes(pb_ostream_t *stream, const pb_field_t *field, const void *src); |
youkee | 0:1ad0e04b1bc5 | 36 | static bool checkreturn pb_enc_string(pb_ostream_t *stream, const pb_field_t *field, const void *src); |
youkee | 0:1ad0e04b1bc5 | 37 | static bool checkreturn pb_enc_submessage(pb_ostream_t *stream, const pb_field_t *field, const void *src); |
youkee | 0:1ad0e04b1bc5 | 38 | |
youkee | 0:1ad0e04b1bc5 | 39 | /* --- Function pointers to field encoders --- |
youkee | 0:1ad0e04b1bc5 | 40 | * Order in the array must match pb_action_t LTYPE numbering. |
youkee | 0:1ad0e04b1bc5 | 41 | */ |
youkee | 0:1ad0e04b1bc5 | 42 | static const pb_encoder_t PB_ENCODERS[PB_LTYPES_COUNT] = { |
youkee | 0:1ad0e04b1bc5 | 43 | &pb_enc_varint, |
youkee | 0:1ad0e04b1bc5 | 44 | &pb_enc_uvarint, |
youkee | 0:1ad0e04b1bc5 | 45 | &pb_enc_svarint, |
youkee | 0:1ad0e04b1bc5 | 46 | &pb_enc_fixed32, |
youkee | 0:1ad0e04b1bc5 | 47 | &pb_enc_fixed64, |
youkee | 0:1ad0e04b1bc5 | 48 | |
youkee | 0:1ad0e04b1bc5 | 49 | &pb_enc_bytes, |
youkee | 0:1ad0e04b1bc5 | 50 | &pb_enc_string, |
youkee | 0:1ad0e04b1bc5 | 51 | &pb_enc_submessage, |
youkee | 0:1ad0e04b1bc5 | 52 | NULL /* extensions */ |
youkee | 0:1ad0e04b1bc5 | 53 | }; |
youkee | 0:1ad0e04b1bc5 | 54 | |
youkee | 0:1ad0e04b1bc5 | 55 | /******************************* |
youkee | 0:1ad0e04b1bc5 | 56 | * pb_ostream_t implementation * |
youkee | 0:1ad0e04b1bc5 | 57 | *******************************/ |
youkee | 0:1ad0e04b1bc5 | 58 | |
youkee | 0:1ad0e04b1bc5 | 59 | static bool checkreturn buf_write(pb_ostream_t *stream, const pb_byte_t *buf, size_t count) |
youkee | 0:1ad0e04b1bc5 | 60 | { |
youkee | 0:1ad0e04b1bc5 | 61 | pb_byte_t *dest = (pb_byte_t*)stream->state; |
youkee | 0:1ad0e04b1bc5 | 62 | stream->state = dest + count; |
youkee | 0:1ad0e04b1bc5 | 63 | |
youkee | 0:1ad0e04b1bc5 | 64 | while (count--) |
youkee | 0:1ad0e04b1bc5 | 65 | *dest++ = *buf++; |
youkee | 0:1ad0e04b1bc5 | 66 | |
youkee | 0:1ad0e04b1bc5 | 67 | return true; |
youkee | 0:1ad0e04b1bc5 | 68 | } |
youkee | 0:1ad0e04b1bc5 | 69 | |
youkee | 0:1ad0e04b1bc5 | 70 | pb_ostream_t pb_ostream_from_buffer(pb_byte_t *buf, size_t bufsize) |
youkee | 0:1ad0e04b1bc5 | 71 | { |
youkee | 0:1ad0e04b1bc5 | 72 | pb_ostream_t stream; |
youkee | 0:1ad0e04b1bc5 | 73 | #ifdef PB_BUFFER_ONLY |
youkee | 0:1ad0e04b1bc5 | 74 | stream.callback = (void*)1; /* Just a marker value */ |
youkee | 0:1ad0e04b1bc5 | 75 | #else |
youkee | 0:1ad0e04b1bc5 | 76 | stream.callback = &buf_write; |
youkee | 0:1ad0e04b1bc5 | 77 | #endif |
youkee | 0:1ad0e04b1bc5 | 78 | stream.state = buf; |
youkee | 0:1ad0e04b1bc5 | 79 | stream.max_size = bufsize; |
youkee | 0:1ad0e04b1bc5 | 80 | stream.bytes_written = 0; |
youkee | 0:1ad0e04b1bc5 | 81 | #ifndef PB_NO_ERRMSG |
youkee | 0:1ad0e04b1bc5 | 82 | stream.errmsg = NULL; |
youkee | 0:1ad0e04b1bc5 | 83 | #endif |
youkee | 0:1ad0e04b1bc5 | 84 | return stream; |
youkee | 0:1ad0e04b1bc5 | 85 | } |
youkee | 0:1ad0e04b1bc5 | 86 | |
youkee | 0:1ad0e04b1bc5 | 87 | bool checkreturn pb_write(pb_ostream_t *stream, const pb_byte_t *buf, size_t count) |
youkee | 0:1ad0e04b1bc5 | 88 | { |
youkee | 0:1ad0e04b1bc5 | 89 | if (stream->callback != NULL) |
youkee | 0:1ad0e04b1bc5 | 90 | { |
youkee | 0:1ad0e04b1bc5 | 91 | if (stream->bytes_written + count > stream->max_size) |
youkee | 0:1ad0e04b1bc5 | 92 | PB_RETURN_ERROR(stream, "stream full"); |
youkee | 0:1ad0e04b1bc5 | 93 | |
youkee | 0:1ad0e04b1bc5 | 94 | #ifdef PB_BUFFER_ONLY |
youkee | 0:1ad0e04b1bc5 | 95 | if (!buf_write(stream, buf, count)) |
youkee | 0:1ad0e04b1bc5 | 96 | PB_RETURN_ERROR(stream, "io error"); |
youkee | 0:1ad0e04b1bc5 | 97 | #else |
youkee | 0:1ad0e04b1bc5 | 98 | if (!stream->callback(stream, buf, count)) |
youkee | 0:1ad0e04b1bc5 | 99 | PB_RETURN_ERROR(stream, "io error"); |
youkee | 0:1ad0e04b1bc5 | 100 | #endif |
youkee | 0:1ad0e04b1bc5 | 101 | } |
youkee | 0:1ad0e04b1bc5 | 102 | |
youkee | 0:1ad0e04b1bc5 | 103 | stream->bytes_written += count; |
youkee | 0:1ad0e04b1bc5 | 104 | return true; |
youkee | 0:1ad0e04b1bc5 | 105 | } |
youkee | 0:1ad0e04b1bc5 | 106 | |
youkee | 0:1ad0e04b1bc5 | 107 | /************************* |
youkee | 0:1ad0e04b1bc5 | 108 | * Encode a single field * |
youkee | 0:1ad0e04b1bc5 | 109 | *************************/ |
youkee | 0:1ad0e04b1bc5 | 110 | |
youkee | 0:1ad0e04b1bc5 | 111 | /* Encode a static array. Handles the size calculations and possible packing. */ |
youkee | 0:1ad0e04b1bc5 | 112 | static bool checkreturn encode_array(pb_ostream_t *stream, const pb_field_t *field, |
youkee | 0:1ad0e04b1bc5 | 113 | const void *pData, size_t count, pb_encoder_t func) |
youkee | 0:1ad0e04b1bc5 | 114 | { |
youkee | 0:1ad0e04b1bc5 | 115 | size_t i; |
youkee | 0:1ad0e04b1bc5 | 116 | const void *p; |
youkee | 0:1ad0e04b1bc5 | 117 | size_t size; |
youkee | 0:1ad0e04b1bc5 | 118 | |
youkee | 0:1ad0e04b1bc5 | 119 | if (count == 0) |
youkee | 0:1ad0e04b1bc5 | 120 | return true; |
youkee | 0:1ad0e04b1bc5 | 121 | |
youkee | 0:1ad0e04b1bc5 | 122 | if (PB_ATYPE(field->type) != PB_ATYPE_POINTER && count > field->array_size) |
youkee | 0:1ad0e04b1bc5 | 123 | PB_RETURN_ERROR(stream, "array max size exceeded"); |
youkee | 0:1ad0e04b1bc5 | 124 | |
youkee | 0:1ad0e04b1bc5 | 125 | /* We always pack arrays if the datatype allows it. */ |
youkee | 0:1ad0e04b1bc5 | 126 | if (PB_LTYPE(field->type) <= PB_LTYPE_LAST_PACKABLE) |
youkee | 0:1ad0e04b1bc5 | 127 | { |
youkee | 0:1ad0e04b1bc5 | 128 | if (!pb_encode_tag(stream, PB_WT_STRING, field->tag)) |
youkee | 0:1ad0e04b1bc5 | 129 | return false; |
youkee | 0:1ad0e04b1bc5 | 130 | |
youkee | 0:1ad0e04b1bc5 | 131 | /* Determine the total size of packed array. */ |
youkee | 0:1ad0e04b1bc5 | 132 | if (PB_LTYPE(field->type) == PB_LTYPE_FIXED32) |
youkee | 0:1ad0e04b1bc5 | 133 | { |
youkee | 0:1ad0e04b1bc5 | 134 | size = 4 * count; |
youkee | 0:1ad0e04b1bc5 | 135 | } |
youkee | 0:1ad0e04b1bc5 | 136 | else if (PB_LTYPE(field->type) == PB_LTYPE_FIXED64) |
youkee | 0:1ad0e04b1bc5 | 137 | { |
youkee | 0:1ad0e04b1bc5 | 138 | size = 8 * count; |
youkee | 0:1ad0e04b1bc5 | 139 | } |
youkee | 0:1ad0e04b1bc5 | 140 | else |
youkee | 0:1ad0e04b1bc5 | 141 | { |
youkee | 0:1ad0e04b1bc5 | 142 | pb_ostream_t sizestream = PB_OSTREAM_SIZING; |
youkee | 0:1ad0e04b1bc5 | 143 | p = pData; |
youkee | 0:1ad0e04b1bc5 | 144 | for (i = 0; i < count; i++) |
youkee | 0:1ad0e04b1bc5 | 145 | { |
youkee | 0:1ad0e04b1bc5 | 146 | if (!func(&sizestream, field, p)) |
youkee | 0:1ad0e04b1bc5 | 147 | return false; |
youkee | 0:1ad0e04b1bc5 | 148 | p = (const char*)p + field->data_size; |
youkee | 0:1ad0e04b1bc5 | 149 | } |
youkee | 0:1ad0e04b1bc5 | 150 | size = sizestream.bytes_written; |
youkee | 0:1ad0e04b1bc5 | 151 | } |
youkee | 0:1ad0e04b1bc5 | 152 | |
youkee | 0:1ad0e04b1bc5 | 153 | if (!pb_encode_varint(stream, (uint64_t)size)) |
youkee | 0:1ad0e04b1bc5 | 154 | return false; |
youkee | 0:1ad0e04b1bc5 | 155 | |
youkee | 0:1ad0e04b1bc5 | 156 | if (stream->callback == NULL) |
youkee | 0:1ad0e04b1bc5 | 157 | return pb_write(stream, NULL, size); /* Just sizing.. */ |
youkee | 0:1ad0e04b1bc5 | 158 | |
youkee | 0:1ad0e04b1bc5 | 159 | /* Write the data */ |
youkee | 0:1ad0e04b1bc5 | 160 | p = pData; |
youkee | 0:1ad0e04b1bc5 | 161 | for (i = 0; i < count; i++) |
youkee | 0:1ad0e04b1bc5 | 162 | { |
youkee | 0:1ad0e04b1bc5 | 163 | if (!func(stream, field, p)) |
youkee | 0:1ad0e04b1bc5 | 164 | return false; |
youkee | 0:1ad0e04b1bc5 | 165 | p = (const char*)p + field->data_size; |
youkee | 0:1ad0e04b1bc5 | 166 | } |
youkee | 0:1ad0e04b1bc5 | 167 | } |
youkee | 0:1ad0e04b1bc5 | 168 | else |
youkee | 0:1ad0e04b1bc5 | 169 | { |
youkee | 0:1ad0e04b1bc5 | 170 | p = pData; |
youkee | 0:1ad0e04b1bc5 | 171 | for (i = 0; i < count; i++) |
youkee | 0:1ad0e04b1bc5 | 172 | { |
youkee | 0:1ad0e04b1bc5 | 173 | if (!pb_encode_tag_for_field(stream, field)) |
youkee | 0:1ad0e04b1bc5 | 174 | return false; |
youkee | 0:1ad0e04b1bc5 | 175 | |
youkee | 0:1ad0e04b1bc5 | 176 | /* Normally the data is stored directly in the array entries, but |
youkee | 0:1ad0e04b1bc5 | 177 | * for pointer-type string and bytes fields, the array entries are |
youkee | 0:1ad0e04b1bc5 | 178 | * actually pointers themselves also. So we have to dereference once |
youkee | 0:1ad0e04b1bc5 | 179 | * more to get to the actual data. */ |
youkee | 0:1ad0e04b1bc5 | 180 | if (PB_ATYPE(field->type) == PB_ATYPE_POINTER && |
youkee | 0:1ad0e04b1bc5 | 181 | (PB_LTYPE(field->type) == PB_LTYPE_STRING || |
youkee | 0:1ad0e04b1bc5 | 182 | PB_LTYPE(field->type) == PB_LTYPE_BYTES)) |
youkee | 0:1ad0e04b1bc5 | 183 | { |
youkee | 0:1ad0e04b1bc5 | 184 | if (!func(stream, field, *(const void* const*)p)) |
youkee | 0:1ad0e04b1bc5 | 185 | return false; |
youkee | 0:1ad0e04b1bc5 | 186 | } |
youkee | 0:1ad0e04b1bc5 | 187 | else |
youkee | 0:1ad0e04b1bc5 | 188 | { |
youkee | 0:1ad0e04b1bc5 | 189 | if (!func(stream, field, p)) |
youkee | 0:1ad0e04b1bc5 | 190 | return false; |
youkee | 0:1ad0e04b1bc5 | 191 | } |
youkee | 0:1ad0e04b1bc5 | 192 | p = (const char*)p + field->data_size; |
youkee | 0:1ad0e04b1bc5 | 193 | } |
youkee | 0:1ad0e04b1bc5 | 194 | } |
youkee | 0:1ad0e04b1bc5 | 195 | |
youkee | 0:1ad0e04b1bc5 | 196 | return true; |
youkee | 0:1ad0e04b1bc5 | 197 | } |
youkee | 0:1ad0e04b1bc5 | 198 | |
youkee | 0:1ad0e04b1bc5 | 199 | /* Encode a field with static or pointer allocation, i.e. one whose data |
youkee | 0:1ad0e04b1bc5 | 200 | * is available to the encoder directly. */ |
youkee | 0:1ad0e04b1bc5 | 201 | static bool checkreturn encode_basic_field(pb_ostream_t *stream, |
youkee | 0:1ad0e04b1bc5 | 202 | const pb_field_t *field, const void *pData) |
youkee | 0:1ad0e04b1bc5 | 203 | { |
youkee | 0:1ad0e04b1bc5 | 204 | pb_encoder_t func; |
youkee | 0:1ad0e04b1bc5 | 205 | const void *pSize; |
youkee | 0:1ad0e04b1bc5 | 206 | bool implicit_has = true; |
youkee | 0:1ad0e04b1bc5 | 207 | |
youkee | 0:1ad0e04b1bc5 | 208 | func = PB_ENCODERS[PB_LTYPE(field->type)]; |
youkee | 0:1ad0e04b1bc5 | 209 | |
youkee | 0:1ad0e04b1bc5 | 210 | if (field->size_offset) |
youkee | 0:1ad0e04b1bc5 | 211 | pSize = (const char*)pData + field->size_offset; |
youkee | 0:1ad0e04b1bc5 | 212 | else |
youkee | 0:1ad0e04b1bc5 | 213 | pSize = &implicit_has; |
youkee | 0:1ad0e04b1bc5 | 214 | |
youkee | 0:1ad0e04b1bc5 | 215 | if (PB_ATYPE(field->type) == PB_ATYPE_POINTER) |
youkee | 0:1ad0e04b1bc5 | 216 | { |
youkee | 0:1ad0e04b1bc5 | 217 | /* pData is a pointer to the field, which contains pointer to |
youkee | 0:1ad0e04b1bc5 | 218 | * the data. If the 2nd pointer is NULL, it is interpreted as if |
youkee | 0:1ad0e04b1bc5 | 219 | * the has_field was false. |
youkee | 0:1ad0e04b1bc5 | 220 | */ |
youkee | 0:1ad0e04b1bc5 | 221 | |
youkee | 0:1ad0e04b1bc5 | 222 | pData = *(const void* const*)pData; |
youkee | 0:1ad0e04b1bc5 | 223 | implicit_has = (pData != NULL); |
youkee | 0:1ad0e04b1bc5 | 224 | } |
youkee | 0:1ad0e04b1bc5 | 225 | |
youkee | 0:1ad0e04b1bc5 | 226 | switch (PB_HTYPE(field->type)) |
youkee | 0:1ad0e04b1bc5 | 227 | { |
youkee | 0:1ad0e04b1bc5 | 228 | case PB_HTYPE_REQUIRED: |
youkee | 0:1ad0e04b1bc5 | 229 | if (!pData) |
youkee | 0:1ad0e04b1bc5 | 230 | PB_RETURN_ERROR(stream, "missing required field"); |
youkee | 0:1ad0e04b1bc5 | 231 | if (!pb_encode_tag_for_field(stream, field)) |
youkee | 0:1ad0e04b1bc5 | 232 | return false; |
youkee | 0:1ad0e04b1bc5 | 233 | if (!func(stream, field, pData)) |
youkee | 0:1ad0e04b1bc5 | 234 | return false; |
youkee | 0:1ad0e04b1bc5 | 235 | break; |
youkee | 0:1ad0e04b1bc5 | 236 | |
youkee | 0:1ad0e04b1bc5 | 237 | case PB_HTYPE_OPTIONAL: |
youkee | 0:1ad0e04b1bc5 | 238 | if (*(const bool*)pSize) |
youkee | 0:1ad0e04b1bc5 | 239 | { |
youkee | 0:1ad0e04b1bc5 | 240 | if (!pb_encode_tag_for_field(stream, field)) |
youkee | 0:1ad0e04b1bc5 | 241 | return false; |
youkee | 0:1ad0e04b1bc5 | 242 | |
youkee | 0:1ad0e04b1bc5 | 243 | if (!func(stream, field, pData)) |
youkee | 0:1ad0e04b1bc5 | 244 | return false; |
youkee | 0:1ad0e04b1bc5 | 245 | } |
youkee | 0:1ad0e04b1bc5 | 246 | break; |
youkee | 0:1ad0e04b1bc5 | 247 | |
youkee | 0:1ad0e04b1bc5 | 248 | case PB_HTYPE_REPEATED: |
youkee | 0:1ad0e04b1bc5 | 249 | if (!encode_array(stream, field, pData, *(const pb_size_t*)pSize, func)) |
youkee | 0:1ad0e04b1bc5 | 250 | return false; |
youkee | 0:1ad0e04b1bc5 | 251 | break; |
youkee | 0:1ad0e04b1bc5 | 252 | |
youkee | 0:1ad0e04b1bc5 | 253 | case PB_HTYPE_ONEOF: |
youkee | 0:1ad0e04b1bc5 | 254 | if (*(const pb_size_t*)pSize == field->tag) |
youkee | 0:1ad0e04b1bc5 | 255 | { |
youkee | 0:1ad0e04b1bc5 | 256 | if (!pb_encode_tag_for_field(stream, field)) |
youkee | 0:1ad0e04b1bc5 | 257 | return false; |
youkee | 0:1ad0e04b1bc5 | 258 | |
youkee | 0:1ad0e04b1bc5 | 259 | if (!func(stream, field, pData)) |
youkee | 0:1ad0e04b1bc5 | 260 | return false; |
youkee | 0:1ad0e04b1bc5 | 261 | } |
youkee | 0:1ad0e04b1bc5 | 262 | break; |
youkee | 0:1ad0e04b1bc5 | 263 | |
youkee | 0:1ad0e04b1bc5 | 264 | default: |
youkee | 0:1ad0e04b1bc5 | 265 | PB_RETURN_ERROR(stream, "invalid field type"); |
youkee | 0:1ad0e04b1bc5 | 266 | } |
youkee | 0:1ad0e04b1bc5 | 267 | |
youkee | 0:1ad0e04b1bc5 | 268 | return true; |
youkee | 0:1ad0e04b1bc5 | 269 | } |
youkee | 0:1ad0e04b1bc5 | 270 | |
youkee | 0:1ad0e04b1bc5 | 271 | /* Encode a field with callback semantics. This means that a user function is |
youkee | 0:1ad0e04b1bc5 | 272 | * called to provide and encode the actual data. */ |
youkee | 0:1ad0e04b1bc5 | 273 | static bool checkreturn encode_callback_field(pb_ostream_t *stream, |
youkee | 0:1ad0e04b1bc5 | 274 | const pb_field_t *field, const void *pData) |
youkee | 0:1ad0e04b1bc5 | 275 | { |
youkee | 0:1ad0e04b1bc5 | 276 | const pb_callback_t *callback = (const pb_callback_t*)pData; |
youkee | 0:1ad0e04b1bc5 | 277 | |
youkee | 0:1ad0e04b1bc5 | 278 | #ifdef PB_OLD_CALLBACK_STYLE |
youkee | 0:1ad0e04b1bc5 | 279 | const void *arg = callback->arg; |
youkee | 0:1ad0e04b1bc5 | 280 | #else |
youkee | 0:1ad0e04b1bc5 | 281 | void * const *arg = &(callback->arg); |
youkee | 0:1ad0e04b1bc5 | 282 | #endif |
youkee | 0:1ad0e04b1bc5 | 283 | |
youkee | 0:1ad0e04b1bc5 | 284 | if (callback->funcs.encode != NULL) |
youkee | 0:1ad0e04b1bc5 | 285 | { |
youkee | 0:1ad0e04b1bc5 | 286 | if (!callback->funcs.encode(stream, field, arg)) |
youkee | 0:1ad0e04b1bc5 | 287 | PB_RETURN_ERROR(stream, "callback error"); |
youkee | 0:1ad0e04b1bc5 | 288 | } |
youkee | 0:1ad0e04b1bc5 | 289 | return true; |
youkee | 0:1ad0e04b1bc5 | 290 | } |
youkee | 0:1ad0e04b1bc5 | 291 | |
youkee | 0:1ad0e04b1bc5 | 292 | /* Encode a single field of any callback or static type. */ |
youkee | 0:1ad0e04b1bc5 | 293 | static bool checkreturn encode_field(pb_ostream_t *stream, |
youkee | 0:1ad0e04b1bc5 | 294 | const pb_field_t *field, const void *pData) |
youkee | 0:1ad0e04b1bc5 | 295 | { |
youkee | 0:1ad0e04b1bc5 | 296 | switch (PB_ATYPE(field->type)) |
youkee | 0:1ad0e04b1bc5 | 297 | { |
youkee | 0:1ad0e04b1bc5 | 298 | case PB_ATYPE_STATIC: |
youkee | 0:1ad0e04b1bc5 | 299 | case PB_ATYPE_POINTER: |
youkee | 0:1ad0e04b1bc5 | 300 | return encode_basic_field(stream, field, pData); |
youkee | 0:1ad0e04b1bc5 | 301 | |
youkee | 0:1ad0e04b1bc5 | 302 | case PB_ATYPE_CALLBACK: |
youkee | 0:1ad0e04b1bc5 | 303 | return encode_callback_field(stream, field, pData); |
youkee | 0:1ad0e04b1bc5 | 304 | |
youkee | 0:1ad0e04b1bc5 | 305 | default: |
youkee | 0:1ad0e04b1bc5 | 306 | PB_RETURN_ERROR(stream, "invalid field type"); |
youkee | 0:1ad0e04b1bc5 | 307 | } |
youkee | 0:1ad0e04b1bc5 | 308 | } |
youkee | 0:1ad0e04b1bc5 | 309 | |
youkee | 0:1ad0e04b1bc5 | 310 | /* Default handler for extension fields. Expects to have a pb_field_t |
youkee | 0:1ad0e04b1bc5 | 311 | * pointer in the extension->type->arg field. */ |
youkee | 0:1ad0e04b1bc5 | 312 | static bool checkreturn default_extension_encoder(pb_ostream_t *stream, |
youkee | 0:1ad0e04b1bc5 | 313 | const pb_extension_t *extension) |
youkee | 0:1ad0e04b1bc5 | 314 | { |
youkee | 0:1ad0e04b1bc5 | 315 | const pb_field_t *field = (const pb_field_t*)extension->type->arg; |
youkee | 0:1ad0e04b1bc5 | 316 | |
youkee | 0:1ad0e04b1bc5 | 317 | if (PB_ATYPE(field->type) == PB_ATYPE_POINTER) |
youkee | 0:1ad0e04b1bc5 | 318 | { |
youkee | 0:1ad0e04b1bc5 | 319 | /* For pointer extensions, the pointer is stored directly |
youkee | 0:1ad0e04b1bc5 | 320 | * in the extension structure. This avoids having an extra |
youkee | 0:1ad0e04b1bc5 | 321 | * indirection. */ |
youkee | 0:1ad0e04b1bc5 | 322 | return encode_field(stream, field, &extension->dest); |
youkee | 0:1ad0e04b1bc5 | 323 | } |
youkee | 0:1ad0e04b1bc5 | 324 | else |
youkee | 0:1ad0e04b1bc5 | 325 | { |
youkee | 0:1ad0e04b1bc5 | 326 | return encode_field(stream, field, extension->dest); |
youkee | 0:1ad0e04b1bc5 | 327 | } |
youkee | 0:1ad0e04b1bc5 | 328 | } |
youkee | 0:1ad0e04b1bc5 | 329 | |
youkee | 0:1ad0e04b1bc5 | 330 | /* Walk through all the registered extensions and give them a chance |
youkee | 0:1ad0e04b1bc5 | 331 | * to encode themselves. */ |
youkee | 0:1ad0e04b1bc5 | 332 | static bool checkreturn encode_extension_field(pb_ostream_t *stream, |
youkee | 0:1ad0e04b1bc5 | 333 | const pb_field_t *field, const void *pData) |
youkee | 0:1ad0e04b1bc5 | 334 | { |
youkee | 0:1ad0e04b1bc5 | 335 | const pb_extension_t *extension = *(const pb_extension_t* const *)pData; |
youkee | 0:1ad0e04b1bc5 | 336 | PB_UNUSED(field); |
youkee | 0:1ad0e04b1bc5 | 337 | |
youkee | 0:1ad0e04b1bc5 | 338 | while (extension) |
youkee | 0:1ad0e04b1bc5 | 339 | { |
youkee | 0:1ad0e04b1bc5 | 340 | bool status; |
youkee | 0:1ad0e04b1bc5 | 341 | if (extension->type->encode) |
youkee | 0:1ad0e04b1bc5 | 342 | status = extension->type->encode(stream, extension); |
youkee | 0:1ad0e04b1bc5 | 343 | else |
youkee | 0:1ad0e04b1bc5 | 344 | status = default_extension_encoder(stream, extension); |
youkee | 0:1ad0e04b1bc5 | 345 | |
youkee | 0:1ad0e04b1bc5 | 346 | if (!status) |
youkee | 0:1ad0e04b1bc5 | 347 | return false; |
youkee | 0:1ad0e04b1bc5 | 348 | |
youkee | 0:1ad0e04b1bc5 | 349 | extension = extension->next; |
youkee | 0:1ad0e04b1bc5 | 350 | } |
youkee | 0:1ad0e04b1bc5 | 351 | |
youkee | 0:1ad0e04b1bc5 | 352 | return true; |
youkee | 0:1ad0e04b1bc5 | 353 | } |
youkee | 0:1ad0e04b1bc5 | 354 | |
youkee | 0:1ad0e04b1bc5 | 355 | /********************* |
youkee | 0:1ad0e04b1bc5 | 356 | * Encode all fields * |
youkee | 0:1ad0e04b1bc5 | 357 | *********************/ |
youkee | 0:1ad0e04b1bc5 | 358 | |
youkee | 0:1ad0e04b1bc5 | 359 | static void *remove_const(const void *p) |
youkee | 0:1ad0e04b1bc5 | 360 | { |
youkee | 0:1ad0e04b1bc5 | 361 | /* Note: this casts away const, in order to use the common field iterator |
youkee | 0:1ad0e04b1bc5 | 362 | * logic for both encoding and decoding. */ |
youkee | 0:1ad0e04b1bc5 | 363 | union { |
youkee | 0:1ad0e04b1bc5 | 364 | void *p1; |
youkee | 0:1ad0e04b1bc5 | 365 | const void *p2; |
youkee | 0:1ad0e04b1bc5 | 366 | } t; |
youkee | 0:1ad0e04b1bc5 | 367 | t.p2 = p; |
youkee | 0:1ad0e04b1bc5 | 368 | return t.p1; |
youkee | 0:1ad0e04b1bc5 | 369 | } |
youkee | 0:1ad0e04b1bc5 | 370 | |
youkee | 0:1ad0e04b1bc5 | 371 | bool checkreturn pb_encode(pb_ostream_t *stream, const pb_field_t fields[], const void *src_struct) |
youkee | 0:1ad0e04b1bc5 | 372 | { |
youkee | 0:1ad0e04b1bc5 | 373 | pb_field_iter_t iter; |
youkee | 0:1ad0e04b1bc5 | 374 | if (!pb_field_iter_begin(&iter, fields, remove_const(src_struct))) |
youkee | 0:1ad0e04b1bc5 | 375 | return true; /* Empty message type */ |
youkee | 0:1ad0e04b1bc5 | 376 | |
youkee | 0:1ad0e04b1bc5 | 377 | do { |
youkee | 0:1ad0e04b1bc5 | 378 | if (PB_LTYPE(iter.pos->type) == PB_LTYPE_EXTENSION) |
youkee | 0:1ad0e04b1bc5 | 379 | { |
youkee | 0:1ad0e04b1bc5 | 380 | /* Special case for the extension field placeholder */ |
youkee | 0:1ad0e04b1bc5 | 381 | if (!encode_extension_field(stream, iter.pos, iter.pData)) |
youkee | 0:1ad0e04b1bc5 | 382 | return false; |
youkee | 0:1ad0e04b1bc5 | 383 | } |
youkee | 0:1ad0e04b1bc5 | 384 | else |
youkee | 0:1ad0e04b1bc5 | 385 | { |
youkee | 0:1ad0e04b1bc5 | 386 | /* Regular field */ |
youkee | 0:1ad0e04b1bc5 | 387 | if (!encode_field(stream, iter.pos, iter.pData)) |
youkee | 0:1ad0e04b1bc5 | 388 | return false; |
youkee | 0:1ad0e04b1bc5 | 389 | } |
youkee | 0:1ad0e04b1bc5 | 390 | } while (pb_field_iter_next(&iter)); |
youkee | 0:1ad0e04b1bc5 | 391 | |
youkee | 0:1ad0e04b1bc5 | 392 | return true; |
youkee | 0:1ad0e04b1bc5 | 393 | } |
youkee | 0:1ad0e04b1bc5 | 394 | |
youkee | 0:1ad0e04b1bc5 | 395 | bool pb_encode_delimited(pb_ostream_t *stream, const pb_field_t fields[], const void *src_struct) |
youkee | 0:1ad0e04b1bc5 | 396 | { |
youkee | 0:1ad0e04b1bc5 | 397 | return pb_encode_submessage(stream, fields, src_struct); |
youkee | 0:1ad0e04b1bc5 | 398 | } |
youkee | 0:1ad0e04b1bc5 | 399 | |
youkee | 0:1ad0e04b1bc5 | 400 | bool pb_get_encoded_size(size_t *size, const pb_field_t fields[], const void *src_struct) |
youkee | 0:1ad0e04b1bc5 | 401 | { |
youkee | 0:1ad0e04b1bc5 | 402 | pb_ostream_t stream = PB_OSTREAM_SIZING; |
youkee | 0:1ad0e04b1bc5 | 403 | |
youkee | 0:1ad0e04b1bc5 | 404 | if (!pb_encode(&stream, fields, src_struct)) |
youkee | 0:1ad0e04b1bc5 | 405 | return false; |
youkee | 0:1ad0e04b1bc5 | 406 | |
youkee | 0:1ad0e04b1bc5 | 407 | *size = stream.bytes_written; |
youkee | 0:1ad0e04b1bc5 | 408 | return true; |
youkee | 0:1ad0e04b1bc5 | 409 | } |
youkee | 0:1ad0e04b1bc5 | 410 | |
youkee | 0:1ad0e04b1bc5 | 411 | /******************** |
youkee | 0:1ad0e04b1bc5 | 412 | * Helper functions * |
youkee | 0:1ad0e04b1bc5 | 413 | ********************/ |
youkee | 0:1ad0e04b1bc5 | 414 | bool checkreturn pb_encode_varint(pb_ostream_t *stream, uint64_t value) |
youkee | 0:1ad0e04b1bc5 | 415 | { |
youkee | 0:1ad0e04b1bc5 | 416 | pb_byte_t buffer[10]; |
youkee | 0:1ad0e04b1bc5 | 417 | size_t i = 0; |
youkee | 0:1ad0e04b1bc5 | 418 | |
youkee | 0:1ad0e04b1bc5 | 419 | if (value <= 0x7F) |
youkee | 0:1ad0e04b1bc5 | 420 | { |
youkee | 0:1ad0e04b1bc5 | 421 | pb_byte_t v = (pb_byte_t)value; |
youkee | 0:1ad0e04b1bc5 | 422 | return pb_write(stream, &v, 1); |
youkee | 0:1ad0e04b1bc5 | 423 | } |
youkee | 0:1ad0e04b1bc5 | 424 | |
youkee | 0:1ad0e04b1bc5 | 425 | while (value) |
youkee | 0:1ad0e04b1bc5 | 426 | { |
youkee | 0:1ad0e04b1bc5 | 427 | buffer[i] = (pb_byte_t)((value & 0x7F) | 0x80); |
youkee | 0:1ad0e04b1bc5 | 428 | value >>= 7; |
youkee | 0:1ad0e04b1bc5 | 429 | i++; |
youkee | 0:1ad0e04b1bc5 | 430 | } |
youkee | 0:1ad0e04b1bc5 | 431 | buffer[i-1] &= 0x7F; /* Unset top bit on last byte */ |
youkee | 0:1ad0e04b1bc5 | 432 | |
youkee | 0:1ad0e04b1bc5 | 433 | return pb_write(stream, buffer, i); |
youkee | 0:1ad0e04b1bc5 | 434 | } |
youkee | 0:1ad0e04b1bc5 | 435 | |
youkee | 0:1ad0e04b1bc5 | 436 | bool checkreturn pb_encode_svarint(pb_ostream_t *stream, int64_t value) |
youkee | 0:1ad0e04b1bc5 | 437 | { |
youkee | 0:1ad0e04b1bc5 | 438 | uint64_t zigzagged; |
youkee | 0:1ad0e04b1bc5 | 439 | if (value < 0) |
youkee | 0:1ad0e04b1bc5 | 440 | zigzagged = ~((uint64_t)value << 1); |
youkee | 0:1ad0e04b1bc5 | 441 | else |
youkee | 0:1ad0e04b1bc5 | 442 | zigzagged = (uint64_t)value << 1; |
youkee | 0:1ad0e04b1bc5 | 443 | |
youkee | 0:1ad0e04b1bc5 | 444 | return pb_encode_varint(stream, zigzagged); |
youkee | 0:1ad0e04b1bc5 | 445 | } |
youkee | 0:1ad0e04b1bc5 | 446 | |
youkee | 0:1ad0e04b1bc5 | 447 | bool checkreturn pb_encode_fixed32(pb_ostream_t *stream, const void *value) |
youkee | 0:1ad0e04b1bc5 | 448 | { |
youkee | 0:1ad0e04b1bc5 | 449 | uint32_t val = *(const uint32_t*)value; |
youkee | 0:1ad0e04b1bc5 | 450 | pb_byte_t bytes[4]; |
youkee | 0:1ad0e04b1bc5 | 451 | bytes[0] = (pb_byte_t)(val & 0xFF); |
youkee | 0:1ad0e04b1bc5 | 452 | bytes[1] = (pb_byte_t)((val >> 8) & 0xFF); |
youkee | 0:1ad0e04b1bc5 | 453 | bytes[2] = (pb_byte_t)((val >> 16) & 0xFF); |
youkee | 0:1ad0e04b1bc5 | 454 | bytes[3] = (pb_byte_t)((val >> 24) & 0xFF); |
youkee | 0:1ad0e04b1bc5 | 455 | return pb_write(stream, bytes, 4); |
youkee | 0:1ad0e04b1bc5 | 456 | } |
youkee | 0:1ad0e04b1bc5 | 457 | |
youkee | 0:1ad0e04b1bc5 | 458 | bool checkreturn pb_encode_fixed64(pb_ostream_t *stream, const void *value) |
youkee | 0:1ad0e04b1bc5 | 459 | { |
youkee | 0:1ad0e04b1bc5 | 460 | uint64_t val = *(const uint64_t*)value; |
youkee | 0:1ad0e04b1bc5 | 461 | pb_byte_t bytes[8]; |
youkee | 0:1ad0e04b1bc5 | 462 | bytes[0] = (pb_byte_t)(val & 0xFF); |
youkee | 0:1ad0e04b1bc5 | 463 | bytes[1] = (pb_byte_t)((val >> 8) & 0xFF); |
youkee | 0:1ad0e04b1bc5 | 464 | bytes[2] = (pb_byte_t)((val >> 16) & 0xFF); |
youkee | 0:1ad0e04b1bc5 | 465 | bytes[3] = (pb_byte_t)((val >> 24) & 0xFF); |
youkee | 0:1ad0e04b1bc5 | 466 | bytes[4] = (pb_byte_t)((val >> 32) & 0xFF); |
youkee | 0:1ad0e04b1bc5 | 467 | bytes[5] = (pb_byte_t)((val >> 40) & 0xFF); |
youkee | 0:1ad0e04b1bc5 | 468 | bytes[6] = (pb_byte_t)((val >> 48) & 0xFF); |
youkee | 0:1ad0e04b1bc5 | 469 | bytes[7] = (pb_byte_t)((val >> 56) & 0xFF); |
youkee | 0:1ad0e04b1bc5 | 470 | return pb_write(stream, bytes, 8); |
youkee | 0:1ad0e04b1bc5 | 471 | } |
youkee | 0:1ad0e04b1bc5 | 472 | |
youkee | 0:1ad0e04b1bc5 | 473 | bool checkreturn pb_encode_tag(pb_ostream_t *stream, pb_wire_type_t wiretype, uint32_t field_number) |
youkee | 0:1ad0e04b1bc5 | 474 | { |
youkee | 0:1ad0e04b1bc5 | 475 | uint64_t tag = ((uint64_t)field_number << 3) | wiretype; |
youkee | 0:1ad0e04b1bc5 | 476 | return pb_encode_varint(stream, tag); |
youkee | 0:1ad0e04b1bc5 | 477 | } |
youkee | 0:1ad0e04b1bc5 | 478 | |
youkee | 0:1ad0e04b1bc5 | 479 | bool checkreturn pb_encode_tag_for_field(pb_ostream_t *stream, const pb_field_t *field) |
youkee | 0:1ad0e04b1bc5 | 480 | { |
youkee | 0:1ad0e04b1bc5 | 481 | pb_wire_type_t wiretype; |
youkee | 0:1ad0e04b1bc5 | 482 | switch (PB_LTYPE(field->type)) |
youkee | 0:1ad0e04b1bc5 | 483 | { |
youkee | 0:1ad0e04b1bc5 | 484 | case PB_LTYPE_VARINT: |
youkee | 0:1ad0e04b1bc5 | 485 | case PB_LTYPE_UVARINT: |
youkee | 0:1ad0e04b1bc5 | 486 | case PB_LTYPE_SVARINT: |
youkee | 0:1ad0e04b1bc5 | 487 | wiretype = PB_WT_VARINT; |
youkee | 0:1ad0e04b1bc5 | 488 | break; |
youkee | 0:1ad0e04b1bc5 | 489 | |
youkee | 0:1ad0e04b1bc5 | 490 | case PB_LTYPE_FIXED32: |
youkee | 0:1ad0e04b1bc5 | 491 | wiretype = PB_WT_32BIT; |
youkee | 0:1ad0e04b1bc5 | 492 | break; |
youkee | 0:1ad0e04b1bc5 | 493 | |
youkee | 0:1ad0e04b1bc5 | 494 | case PB_LTYPE_FIXED64: |
youkee | 0:1ad0e04b1bc5 | 495 | wiretype = PB_WT_64BIT; |
youkee | 0:1ad0e04b1bc5 | 496 | break; |
youkee | 0:1ad0e04b1bc5 | 497 | |
youkee | 0:1ad0e04b1bc5 | 498 | case PB_LTYPE_BYTES: |
youkee | 0:1ad0e04b1bc5 | 499 | case PB_LTYPE_STRING: |
youkee | 0:1ad0e04b1bc5 | 500 | case PB_LTYPE_SUBMESSAGE: |
youkee | 0:1ad0e04b1bc5 | 501 | wiretype = PB_WT_STRING; |
youkee | 0:1ad0e04b1bc5 | 502 | break; |
youkee | 0:1ad0e04b1bc5 | 503 | |
youkee | 0:1ad0e04b1bc5 | 504 | default: |
youkee | 0:1ad0e04b1bc5 | 505 | PB_RETURN_ERROR(stream, "invalid field type"); |
youkee | 0:1ad0e04b1bc5 | 506 | } |
youkee | 0:1ad0e04b1bc5 | 507 | |
youkee | 0:1ad0e04b1bc5 | 508 | return pb_encode_tag(stream, wiretype, field->tag); |
youkee | 0:1ad0e04b1bc5 | 509 | } |
youkee | 0:1ad0e04b1bc5 | 510 | |
youkee | 0:1ad0e04b1bc5 | 511 | bool checkreturn pb_encode_string(pb_ostream_t *stream, const pb_byte_t *buffer, size_t size) |
youkee | 0:1ad0e04b1bc5 | 512 | { |
youkee | 0:1ad0e04b1bc5 | 513 | if (!pb_encode_varint(stream, (uint64_t)size)) |
youkee | 0:1ad0e04b1bc5 | 514 | return false; |
youkee | 0:1ad0e04b1bc5 | 515 | |
youkee | 0:1ad0e04b1bc5 | 516 | return pb_write(stream, buffer, size); |
youkee | 0:1ad0e04b1bc5 | 517 | } |
youkee | 0:1ad0e04b1bc5 | 518 | |
youkee | 0:1ad0e04b1bc5 | 519 | bool checkreturn pb_encode_submessage(pb_ostream_t *stream, const pb_field_t fields[], const void *src_struct) |
youkee | 0:1ad0e04b1bc5 | 520 | { |
youkee | 0:1ad0e04b1bc5 | 521 | /* First calculate the message size using a non-writing substream. */ |
youkee | 0:1ad0e04b1bc5 | 522 | pb_ostream_t substream = PB_OSTREAM_SIZING; |
youkee | 0:1ad0e04b1bc5 | 523 | size_t size; |
youkee | 0:1ad0e04b1bc5 | 524 | bool status; |
youkee | 0:1ad0e04b1bc5 | 525 | |
youkee | 0:1ad0e04b1bc5 | 526 | if (!pb_encode(&substream, fields, src_struct)) |
youkee | 0:1ad0e04b1bc5 | 527 | { |
youkee | 0:1ad0e04b1bc5 | 528 | #ifndef PB_NO_ERRMSG |
youkee | 0:1ad0e04b1bc5 | 529 | stream->errmsg = substream.errmsg; |
youkee | 0:1ad0e04b1bc5 | 530 | #endif |
youkee | 0:1ad0e04b1bc5 | 531 | return false; |
youkee | 0:1ad0e04b1bc5 | 532 | } |
youkee | 0:1ad0e04b1bc5 | 533 | |
youkee | 0:1ad0e04b1bc5 | 534 | size = substream.bytes_written; |
youkee | 0:1ad0e04b1bc5 | 535 | |
youkee | 0:1ad0e04b1bc5 | 536 | if (!pb_encode_varint(stream, (uint64_t)size)) |
youkee | 0:1ad0e04b1bc5 | 537 | return false; |
youkee | 0:1ad0e04b1bc5 | 538 | |
youkee | 0:1ad0e04b1bc5 | 539 | if (stream->callback == NULL) |
youkee | 0:1ad0e04b1bc5 | 540 | return pb_write(stream, NULL, size); /* Just sizing */ |
youkee | 0:1ad0e04b1bc5 | 541 | |
youkee | 0:1ad0e04b1bc5 | 542 | if (stream->bytes_written + size > stream->max_size) |
youkee | 0:1ad0e04b1bc5 | 543 | PB_RETURN_ERROR(stream, "stream full"); |
youkee | 0:1ad0e04b1bc5 | 544 | |
youkee | 0:1ad0e04b1bc5 | 545 | /* Use a substream to verify that a callback doesn't write more than |
youkee | 0:1ad0e04b1bc5 | 546 | * what it did the first time. */ |
youkee | 0:1ad0e04b1bc5 | 547 | substream.callback = stream->callback; |
youkee | 0:1ad0e04b1bc5 | 548 | substream.state = stream->state; |
youkee | 0:1ad0e04b1bc5 | 549 | substream.max_size = size; |
youkee | 0:1ad0e04b1bc5 | 550 | substream.bytes_written = 0; |
youkee | 0:1ad0e04b1bc5 | 551 | #ifndef PB_NO_ERRMSG |
youkee | 0:1ad0e04b1bc5 | 552 | substream.errmsg = NULL; |
youkee | 0:1ad0e04b1bc5 | 553 | #endif |
youkee | 0:1ad0e04b1bc5 | 554 | |
youkee | 0:1ad0e04b1bc5 | 555 | status = pb_encode(&substream, fields, src_struct); |
youkee | 0:1ad0e04b1bc5 | 556 | |
youkee | 0:1ad0e04b1bc5 | 557 | stream->bytes_written += substream.bytes_written; |
youkee | 0:1ad0e04b1bc5 | 558 | stream->state = substream.state; |
youkee | 0:1ad0e04b1bc5 | 559 | #ifndef PB_NO_ERRMSG |
youkee | 0:1ad0e04b1bc5 | 560 | stream->errmsg = substream.errmsg; |
youkee | 0:1ad0e04b1bc5 | 561 | #endif |
youkee | 0:1ad0e04b1bc5 | 562 | |
youkee | 0:1ad0e04b1bc5 | 563 | if (substream.bytes_written != size) |
youkee | 0:1ad0e04b1bc5 | 564 | PB_RETURN_ERROR(stream, "submsg size changed"); |
youkee | 0:1ad0e04b1bc5 | 565 | |
youkee | 0:1ad0e04b1bc5 | 566 | return status; |
youkee | 0:1ad0e04b1bc5 | 567 | } |
youkee | 0:1ad0e04b1bc5 | 568 | |
youkee | 0:1ad0e04b1bc5 | 569 | /* Field encoders */ |
youkee | 0:1ad0e04b1bc5 | 570 | |
youkee | 0:1ad0e04b1bc5 | 571 | static bool checkreturn pb_enc_varint(pb_ostream_t *stream, const pb_field_t *field, const void *src) |
youkee | 0:1ad0e04b1bc5 | 572 | { |
youkee | 0:1ad0e04b1bc5 | 573 | int64_t value = 0; |
youkee | 0:1ad0e04b1bc5 | 574 | |
youkee | 0:1ad0e04b1bc5 | 575 | if (field->data_size == sizeof(int_least8_t)) |
youkee | 0:1ad0e04b1bc5 | 576 | value = *(const int_least8_t*)src; |
youkee | 0:1ad0e04b1bc5 | 577 | else if (field->data_size == sizeof(int_least16_t)) |
youkee | 0:1ad0e04b1bc5 | 578 | value = *(const int_least16_t*)src; |
youkee | 0:1ad0e04b1bc5 | 579 | else if (field->data_size == sizeof(int32_t)) |
youkee | 0:1ad0e04b1bc5 | 580 | value = *(const int32_t*)src; |
youkee | 0:1ad0e04b1bc5 | 581 | else if (field->data_size == sizeof(int64_t)) |
youkee | 0:1ad0e04b1bc5 | 582 | value = *(const int64_t*)src; |
youkee | 0:1ad0e04b1bc5 | 583 | else |
youkee | 0:1ad0e04b1bc5 | 584 | PB_RETURN_ERROR(stream, "invalid data_size"); |
youkee | 0:1ad0e04b1bc5 | 585 | |
youkee | 0:1ad0e04b1bc5 | 586 | return pb_encode_varint(stream, (uint64_t)value); |
youkee | 0:1ad0e04b1bc5 | 587 | } |
youkee | 0:1ad0e04b1bc5 | 588 | |
youkee | 0:1ad0e04b1bc5 | 589 | static bool checkreturn pb_enc_uvarint(pb_ostream_t *stream, const pb_field_t *field, const void *src) |
youkee | 0:1ad0e04b1bc5 | 590 | { |
youkee | 0:1ad0e04b1bc5 | 591 | uint64_t value = 0; |
youkee | 0:1ad0e04b1bc5 | 592 | |
youkee | 0:1ad0e04b1bc5 | 593 | if (field->data_size == sizeof(uint_least8_t)) |
youkee | 0:1ad0e04b1bc5 | 594 | value = *(const uint_least8_t*)src; |
youkee | 0:1ad0e04b1bc5 | 595 | else if (field->data_size == sizeof(uint_least16_t)) |
youkee | 0:1ad0e04b1bc5 | 596 | value = *(const uint_least16_t*)src; |
youkee | 0:1ad0e04b1bc5 | 597 | else if (field->data_size == sizeof(uint32_t)) |
youkee | 0:1ad0e04b1bc5 | 598 | value = *(const uint32_t*)src; |
youkee | 0:1ad0e04b1bc5 | 599 | else if (field->data_size == sizeof(uint64_t)) |
youkee | 0:1ad0e04b1bc5 | 600 | value = *(const uint64_t*)src; |
youkee | 0:1ad0e04b1bc5 | 601 | else |
youkee | 0:1ad0e04b1bc5 | 602 | PB_RETURN_ERROR(stream, "invalid data_size"); |
youkee | 0:1ad0e04b1bc5 | 603 | |
youkee | 0:1ad0e04b1bc5 | 604 | return pb_encode_varint(stream, value); |
youkee | 0:1ad0e04b1bc5 | 605 | } |
youkee | 0:1ad0e04b1bc5 | 606 | |
youkee | 0:1ad0e04b1bc5 | 607 | static bool checkreturn pb_enc_svarint(pb_ostream_t *stream, const pb_field_t *field, const void *src) |
youkee | 0:1ad0e04b1bc5 | 608 | { |
youkee | 0:1ad0e04b1bc5 | 609 | int64_t value = 0; |
youkee | 0:1ad0e04b1bc5 | 610 | |
youkee | 0:1ad0e04b1bc5 | 611 | if (field->data_size == sizeof(int_least8_t)) |
youkee | 0:1ad0e04b1bc5 | 612 | value = *(const int_least8_t*)src; |
youkee | 0:1ad0e04b1bc5 | 613 | else if (field->data_size == sizeof(int_least16_t)) |
youkee | 0:1ad0e04b1bc5 | 614 | value = *(const int_least16_t*)src; |
youkee | 0:1ad0e04b1bc5 | 615 | else if (field->data_size == sizeof(int32_t)) |
youkee | 0:1ad0e04b1bc5 | 616 | value = *(const int32_t*)src; |
youkee | 0:1ad0e04b1bc5 | 617 | else if (field->data_size == sizeof(int64_t)) |
youkee | 0:1ad0e04b1bc5 | 618 | value = *(const int64_t*)src; |
youkee | 0:1ad0e04b1bc5 | 619 | else |
youkee | 0:1ad0e04b1bc5 | 620 | PB_RETURN_ERROR(stream, "invalid data_size"); |
youkee | 0:1ad0e04b1bc5 | 621 | |
youkee | 0:1ad0e04b1bc5 | 622 | return pb_encode_svarint(stream, value); |
youkee | 0:1ad0e04b1bc5 | 623 | } |
youkee | 0:1ad0e04b1bc5 | 624 | |
youkee | 0:1ad0e04b1bc5 | 625 | static bool checkreturn pb_enc_fixed64(pb_ostream_t *stream, const pb_field_t *field, const void *src) |
youkee | 0:1ad0e04b1bc5 | 626 | { |
youkee | 0:1ad0e04b1bc5 | 627 | PB_UNUSED(field); |
youkee | 0:1ad0e04b1bc5 | 628 | return pb_encode_fixed64(stream, src); |
youkee | 0:1ad0e04b1bc5 | 629 | } |
youkee | 0:1ad0e04b1bc5 | 630 | |
youkee | 0:1ad0e04b1bc5 | 631 | static bool checkreturn pb_enc_fixed32(pb_ostream_t *stream, const pb_field_t *field, const void *src) |
youkee | 0:1ad0e04b1bc5 | 632 | { |
youkee | 0:1ad0e04b1bc5 | 633 | PB_UNUSED(field); |
youkee | 0:1ad0e04b1bc5 | 634 | return pb_encode_fixed32(stream, src); |
youkee | 0:1ad0e04b1bc5 | 635 | } |
youkee | 0:1ad0e04b1bc5 | 636 | |
youkee | 0:1ad0e04b1bc5 | 637 | static bool checkreturn pb_enc_bytes(pb_ostream_t *stream, const pb_field_t *field, const void *src) |
youkee | 0:1ad0e04b1bc5 | 638 | { |
youkee | 0:1ad0e04b1bc5 | 639 | const pb_bytes_array_t *bytes = (const pb_bytes_array_t*)src; |
youkee | 0:1ad0e04b1bc5 | 640 | |
youkee | 0:1ad0e04b1bc5 | 641 | if (src == NULL) |
youkee | 0:1ad0e04b1bc5 | 642 | { |
youkee | 0:1ad0e04b1bc5 | 643 | /* Threat null pointer as an empty bytes field */ |
youkee | 0:1ad0e04b1bc5 | 644 | return pb_encode_string(stream, NULL, 0); |
youkee | 0:1ad0e04b1bc5 | 645 | } |
youkee | 0:1ad0e04b1bc5 | 646 | |
youkee | 0:1ad0e04b1bc5 | 647 | if (PB_ATYPE(field->type) == PB_ATYPE_STATIC && |
youkee | 0:1ad0e04b1bc5 | 648 | PB_BYTES_ARRAY_T_ALLOCSIZE(bytes->size) > field->data_size) |
youkee | 0:1ad0e04b1bc5 | 649 | { |
youkee | 0:1ad0e04b1bc5 | 650 | PB_RETURN_ERROR(stream, "bytes size exceeded"); |
youkee | 0:1ad0e04b1bc5 | 651 | } |
youkee | 0:1ad0e04b1bc5 | 652 | |
youkee | 0:1ad0e04b1bc5 | 653 | return pb_encode_string(stream, bytes->bytes, bytes->size); |
youkee | 0:1ad0e04b1bc5 | 654 | } |
youkee | 0:1ad0e04b1bc5 | 655 | |
youkee | 0:1ad0e04b1bc5 | 656 | static bool checkreturn pb_enc_string(pb_ostream_t *stream, const pb_field_t *field, const void *src) |
youkee | 0:1ad0e04b1bc5 | 657 | { |
youkee | 0:1ad0e04b1bc5 | 658 | size_t size = 0; |
youkee | 0:1ad0e04b1bc5 | 659 | size_t max_size = field->data_size; |
youkee | 0:1ad0e04b1bc5 | 660 | const char *p = (const char*)src; |
youkee | 0:1ad0e04b1bc5 | 661 | |
youkee | 0:1ad0e04b1bc5 | 662 | if (PB_ATYPE(field->type) == PB_ATYPE_POINTER) |
youkee | 0:1ad0e04b1bc5 | 663 | max_size = (size_t)-1; |
youkee | 0:1ad0e04b1bc5 | 664 | |
youkee | 0:1ad0e04b1bc5 | 665 | if (src == NULL) |
youkee | 0:1ad0e04b1bc5 | 666 | { |
youkee | 0:1ad0e04b1bc5 | 667 | size = 0; /* Threat null pointer as an empty string */ |
youkee | 0:1ad0e04b1bc5 | 668 | } |
youkee | 0:1ad0e04b1bc5 | 669 | else |
youkee | 0:1ad0e04b1bc5 | 670 | { |
youkee | 0:1ad0e04b1bc5 | 671 | /* strnlen() is not always available, so just use a loop */ |
youkee | 0:1ad0e04b1bc5 | 672 | while (size < max_size && *p != '\0') |
youkee | 0:1ad0e04b1bc5 | 673 | { |
youkee | 0:1ad0e04b1bc5 | 674 | size++; |
youkee | 0:1ad0e04b1bc5 | 675 | p++; |
youkee | 0:1ad0e04b1bc5 | 676 | } |
youkee | 0:1ad0e04b1bc5 | 677 | } |
youkee | 0:1ad0e04b1bc5 | 678 | |
youkee | 0:1ad0e04b1bc5 | 679 | return pb_encode_string(stream, (const pb_byte_t*)src, size); |
youkee | 0:1ad0e04b1bc5 | 680 | } |
youkee | 0:1ad0e04b1bc5 | 681 | |
youkee | 0:1ad0e04b1bc5 | 682 | static bool checkreturn pb_enc_submessage(pb_ostream_t *stream, const pb_field_t *field, const void *src) |
youkee | 0:1ad0e04b1bc5 | 683 | { |
youkee | 0:1ad0e04b1bc5 | 684 | if (field->ptr == NULL) |
youkee | 0:1ad0e04b1bc5 | 685 | PB_RETURN_ERROR(stream, "invalid field descriptor"); |
youkee | 0:1ad0e04b1bc5 | 686 | |
youkee | 0:1ad0e04b1bc5 | 687 | return pb_encode_submessage(stream, (const pb_field_t*)field->ptr, src); |
youkee | 0:1ad0e04b1bc5 | 688 | } |