mirror of https://github.com/grpc/grpc.git
e70853d71f Merge pull request #251 from haberman/emptyfix b409f8cd85 Fixed code generator for upbdefs when a file has no messages. 58010a3f73 Another fix for google import. 4b8c04e521 Ran buildifier and fixed a few things for google3 import. 95fb9b2e38 Merge pull request #250 from haberman/jsonencode d7d72f0075 Updated CMakeLists.txt. 872f4ceb8f [json encoder] passes all conformance tests. 384cf15b0f [json encoder] passes almost all conformance tests. 6e9db7dafc Fixed JSON encoder so that it compiles. 43d8673623 Merge branch 'master' into jsonencode 60d0966a0b [jsonencoder]: wrote most of the code, haven't even compiled yet, let alone tested. 1da9cfde77 A few bugfixes. git-subtree-dir: third_party/upb git-subtree-split: e70853d71f3db513f3d19a7842e0703bfa56d6a5pull/23140/head
Mark D. Roth
5 years ago
parent
657bcfb5ad
commit
7eafc04dde
9 changed files with 821 additions and 41 deletions
@ -0,0 +1,2 @@ |
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syntax = "proto2"; |
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@ -0,0 +1,655 @@ |
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#include "upb/json_encode.h" |
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#include <ctype.h> |
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#include <float.h> |
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#include <inttypes.h> |
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#include <stdarg.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <setjmp.h> |
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#include "upb/decode.h" |
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#include "upb/reflection.h" |
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#include "upb/port_def.inc" |
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typedef struct { |
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char *buf, *ptr, *end; |
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size_t overflow; |
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int indent_depth; |
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int options; |
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const upb_symtab *ext_pool; |
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jmp_buf err; |
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upb_status *status; |
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upb_arena *arena; |
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} jsonenc; |
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static void jsonenc_msg(jsonenc *e, const upb_msg *msg, const upb_msgdef *m); |
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static void jsonenc_scalar(jsonenc *e, upb_msgval val, const upb_fielddef *f); |
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static void jsonenc_msgfield(jsonenc *e, const upb_msg *msg, |
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const upb_msgdef *m); |
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static void jsonenc_value(jsonenc *e, const upb_msg *msg, const upb_msgdef *m); |
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static void jsonenc_err(jsonenc *e, const char *msg) { |
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upb_status_seterrmsg(e->status, msg); |
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longjmp(e->err, 1); |
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} |
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static void jsonenc_putbytes(jsonenc *e, const void *data, size_t len) { |
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size_t have = e->end - e->ptr; |
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if (UPB_LIKELY(have >= len)) { |
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memcpy(e->ptr, data, len); |
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e->ptr += len; |
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} else { |
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memcpy(e->ptr, data, have); |
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e->ptr += have; |
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e->overflow += (len - have); |
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} |
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} |
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static void jsonenc_putstr(jsonenc *e, const char *str) { |
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jsonenc_putbytes(e, str, strlen(str)); |
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} |
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static void jsonenc_printf(jsonenc *e, const char *fmt, ...) { |
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size_t n; |
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size_t have = e->end - e->ptr; |
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va_list args; |
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va_start(args, fmt); |
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n = _upb_vsnprintf(e->ptr, have, fmt, args); |
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va_end(args); |
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if (UPB_LIKELY(have > n)) { |
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e->ptr += n; |
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} else { |
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e->ptr += have; |
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e->overflow += (n - have); |
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} |
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} |
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static void jsonenc_nanos(jsonenc *e, int32_t nanos) { |
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const char zeros[3] = "000"; |
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if (nanos == 0) return; |
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if (nanos < 0 || nanos >= 1000000000) { |
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jsonenc_err(e, "error formatting timestamp as JSON: invalid nanos"); |
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} |
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jsonenc_printf(e, "%09" PRId32, nanos); |
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/* Remove trailing zeros, 3 at a time. */ |
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while ((e->ptr - e->buf) >= 3 && memcmp(e->ptr, zeros, 3) == 0) { |
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e->ptr -= 3; |
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} |
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} |
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static void jsonenc_timestamp(jsonenc *e, const upb_msg *msg, |
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const upb_msgdef *m) { |
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const upb_fielddef *seconds_f = upb_msgdef_itof(m, 1); |
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const upb_fielddef *nanos_f = upb_msgdef_itof(m, 2); |
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int64_t seconds = upb_msg_get(msg, seconds_f).int64_val; |
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int32_t nanos = upb_msg_get(msg, nanos_f).int32_val; |
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int L, N, I, J, K, hour, min, sec; |
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if (seconds < -62135596800) { |
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jsonenc_err(e, |
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"error formatting timestamp as JSON: minimum acceptable value " |
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"is 0001-01-01T00:00:00Z"); |
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} else if (seconds > 253402300799) { |
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jsonenc_err(e, |
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"error formatting timestamp as JSON: maximum acceptable value " |
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"is 9999-12-31T23:59:59Z"); |
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} |
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/* Julian Day -> Y/M/D, Algorithm from:
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* Fliegel, H. F., and Van Flandern, T. C., "A Machine Algorithm for |
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* Processing Calendar Dates," Communications of the Association of |
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* Computing Machines, vol. 11 (1968), p. 657. */ |
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L = (seconds / 86400) + 2440588; |
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N = 4 * L / 146097; |
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L = L - (146097 * N + 3) / 4; |
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I = 4000 * (L + 1) / 1461001; |
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L = L - 1461 * I / 4 + 31; |
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J = 80 * L / 2447; |
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K = L - 2447 * J / 80; |
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L = J / 11; |
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J = J + 2 - 12 * L; |
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I = 100 * (N - 49) + I + L; |
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sec = seconds % 60; |
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min = (seconds / 60) % 60; |
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hour = (seconds / 3600) % 24; |
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jsonenc_printf(e, "\"%04d-%02d-%02dT%02d:%02d:%02d", I, J, K, hour, min, sec); |
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jsonenc_nanos(e, nanos); |
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jsonenc_putstr(e, "Z\""); |
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} |
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static void jsonenc_duration(jsonenc *e, const upb_msg *msg, const upb_msgdef *m) { |
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const upb_fielddef *seconds_f = upb_msgdef_itof(m, 1); |
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const upb_fielddef *nanos_f = upb_msgdef_itof(m, 2); |
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int64_t seconds = upb_msg_get(msg, seconds_f).int64_val; |
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int32_t nanos = upb_msg_get(msg, nanos_f).int32_val; |
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if (seconds > 315576000000 || seconds < -315576000000 || |
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(seconds < 0) != (nanos < 0)) { |
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jsonenc_err(e, "bad duration"); |
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} |
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jsonenc_printf(e, "\"%" PRId64, seconds); |
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jsonenc_nanos(e, nanos); |
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jsonenc_putstr(e, "s\""); |
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} |
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static void jsonenc_enum(int32_t val, const upb_fielddef *f, jsonenc *e) { |
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const upb_enumdef *e_def = upb_fielddef_enumsubdef(f); |
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const char *name = upb_enumdef_iton(e_def, val); |
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if (name) { |
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jsonenc_printf(e, "\"%s\"", name); |
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} else { |
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jsonenc_printf(e, "%" PRId32, val); |
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} |
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} |
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static void jsonenc_bytes(jsonenc *e, upb_strview str) { |
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/* This is the regular base64, not the "web-safe" version. */ |
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static const char base64[] = |
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"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; |
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const char *ptr = str.data; |
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const char *end = ptr + str.size; |
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char buf[4]; |
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jsonenc_putstr(e, "\""); |
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while (end - ptr >= 3) { |
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buf[0] = base64[ptr[0] >> 2]; |
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buf[1] = base64[((ptr[0] & 0x3) << 4) | (ptr[1] >> 4)]; |
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buf[2] = base64[((ptr[1] & 0xf) << 2) | (ptr[2] >> 6)]; |
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buf[3] = base64[ptr[2] & 0x3f]; |
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jsonenc_putbytes(e, buf, 4); |
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ptr += 3; |
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} |
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switch (end - ptr) { |
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case 2: |
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buf[0] = base64[ptr[0] >> 2]; |
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buf[1] = base64[((ptr[0] & 0x3) << 4) | (ptr[1] >> 4)]; |
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buf[2] = base64[(ptr[1] & 0xf) << 2]; |
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buf[3] = '='; |
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jsonenc_putbytes(e, buf, 4); |
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break; |
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case 1: |
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buf[0] = base64[ptr[0] >> 2]; |
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buf[1] = base64[((ptr[0] & 0x3) << 4)]; |
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buf[2] = '='; |
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buf[3] = '='; |
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jsonenc_putbytes(e, buf, 4); |
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break; |
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} |
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jsonenc_putstr(e, "\""); |
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} |
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static void jsonenc_stringbody(jsonenc *e, upb_strview str) { |
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const char *ptr = str.data; |
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const char *end = ptr + str.size; |
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while (ptr < end) { |
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switch (*ptr) { |
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case '\n': |
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jsonenc_putstr(e, "\\n"); |
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break; |
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case '\r': |
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jsonenc_putstr(e, "\\r"); |
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break; |
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case '\t': |
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jsonenc_putstr(e, "\\t"); |
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break; |
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case '\"': |
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jsonenc_putstr(e, "\\\""); |
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break; |
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case '\f': |
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jsonenc_putstr(e, "\f'"); |
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break; |
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case '\b': |
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jsonenc_putstr(e, "\b'"); |
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break; |
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case '\\': |
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jsonenc_putstr(e, "\\\\"); |
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break; |
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default: |
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if ((uint8_t)*ptr < 0x20) { |
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jsonenc_printf(e, "\\u%04x", (int)(uint8_t)*ptr); |
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} else { |
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/* This could be a non-ASCII byte. We rely on the string being valid
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* UTF-8. */ |
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jsonenc_putbytes(e, ptr, 1); |
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} |
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break; |
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} |
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ptr++; |
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} |
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} |
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static void jsonenc_string(jsonenc *e, upb_strview str) { |
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jsonenc_putstr(e, "\""); |
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jsonenc_stringbody(e, str); |
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jsonenc_putstr(e, "\""); |
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} |
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static void jsonenc_double(jsonenc *e, const char *fmt, double val) { |
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if (val == UPB_INFINITY) { |
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jsonenc_putstr(e, "\"Infinity\""); |
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} else if (val == -UPB_INFINITY) { |
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jsonenc_putstr(e, "\"-Infinity\""); |
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} else if (val != val) { |
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jsonenc_putstr(e, "\"NaN\""); |
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} else { |
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jsonenc_printf(e, fmt, val); |
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} |
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} |
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static void jsonenc_wrapper(jsonenc *e, const upb_msg *msg, |
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const upb_msgdef *m) { |
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const upb_fielddef *val_f = upb_msgdef_itof(m, 1); |
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upb_msgval val = upb_msg_get(m, val_f); |
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jsonenc_scalar(e, val, val_f); |
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} |
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const upb_msgdef *jsonenc_getanymsg(jsonenc *e, upb_strview type_url) { |
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/* Find last '/', if any. */ |
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const char *end = type_url.data + type_url.size; |
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const char *ptr = end; |
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if (!e->ext_pool || type_url.size == 0) return NULL; |
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while (true) { |
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if (--ptr == type_url.data) { |
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/* Type URL must contain at least one '/', with host before. */ |
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return NULL; |
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} |
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if (*ptr == '/') { |
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ptr++; |
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break; |
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} |
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} |
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return upb_symtab_lookupmsg2(e->ext_pool, ptr, end - ptr); |
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} |
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static void jsonenc_any(jsonenc *e, const upb_msg *msg, const upb_msgdef *m) { |
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const upb_fielddef *type_url_f = upb_msgdef_itof(m, 1); |
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const upb_fielddef *value_f = upb_msgdef_itof(m, 1); |
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upb_strview type_url = upb_msg_get(msg, type_url_f).str_val; |
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upb_strview value = upb_msg_get(msg, value_f).str_val; |
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const upb_msgdef *any_m = jsonenc_getanymsg(e, type_url); |
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const upb_msglayout *any_layout = upb_msgdef_layout(any_m); |
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upb_msg *any = upb_msg_new(any_m, e->arena); |
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if (!upb_decode(value.data, value.size, any, any_layout, e->arena)) { |
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jsonenc_err(e, "Error decoding message in Any"); |
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} |
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jsonenc_putstr(e, "{\"@type\": "); |
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jsonenc_string(e, type_url); |
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jsonenc_putstr(e, ", "); |
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if (upb_msgdef_wellknowntype(m) == UPB_WELLKNOWN_UNSPECIFIED) { |
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/* Regular messages: {"@type": "...", "foo": 1, "bar": 2} */ |
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jsonenc_msg(e, any, any_m); |
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} else { |
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/* Well-known type: {"@type": "...", "value": <well-known encoding>} */ |
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jsonenc_putstr(e, "value: "); |
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jsonenc_msgfield(e, any, any_m); |
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} |
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jsonenc_putstr(e, "}"); |
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} |
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static void jsonenc_putsep(jsonenc *e, const char *str, bool *first) { |
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if (*first) { |
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*first = false; |
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} else { |
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jsonenc_putstr(e, str); |
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} |
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} |
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static void jsonenc_fieldpath(jsonenc *e, upb_strview path) { |
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const char *ptr = path.data; |
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const char *end = ptr + path.size; |
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while (ptr < end) { |
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char ch = *ptr; |
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if (ch >= 'A' && ch <= 'Z') { |
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jsonenc_err(e, "Field mask element may not have upper-case letter."); |
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} else if (ch == '_') { |
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if (ptr == end - 1 || *(ptr + 1) < 'a' || *(ptr + 1) > 'z') { |
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jsonenc_err(e, "Underscore must be followed by a lowercase letter."); |
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} |
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} else { |
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jsonenc_putbytes(e, &ch, 1); |
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} |
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ptr++; |
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} |
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} |
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static void jsonenc_fieldmask(jsonenc *e, const upb_msg *msg, |
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const upb_msgdef *m) { |
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const upb_fielddef *paths_f = upb_msgdef_itof(m, 1); |
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const upb_array *paths = upb_msg_get(msg, paths_f).array_val; |
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bool first = true; |
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size_t i, n = 0; |
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if (paths) n = upb_array_size(paths); |
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jsonenc_putstr(e, "\""); |
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for (i = 0; i < n; i++) { |
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jsonenc_putsep(e, ",", &first); |
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jsonenc_fieldpath(e, upb_array_get(paths, i).str_val); |
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} |
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jsonenc_putstr(e, "\""); |
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} |
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static void jsonenc_struct(jsonenc *e, const upb_msg *msg, |
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const upb_msgdef *m) { |
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const upb_fielddef *fields_f = upb_msgdef_itof(m, 1); |
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const upb_map *fields = upb_msg_get(msg, fields_f).map_val; |
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const upb_msgdef *entry_m = upb_fielddef_msgsubdef(fields_f); |
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const upb_fielddef *value_f = upb_msgdef_itof(entry_m, 2); |
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size_t iter = UPB_MAP_BEGIN; |
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bool first = true; |
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jsonenc_putstr(e, "{"); |
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while (upb_mapiter_next(fields, &iter)) { |
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upb_msgval key = upb_mapiter_key(fields, iter); |
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upb_msgval val = upb_mapiter_value(fields, iter); |
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jsonenc_putsep(e, ", ", &first); |
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jsonenc_string(e, key.str_val); |
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jsonenc_putstr(e, ": "); |
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jsonenc_value(e, val.msg_val, upb_fielddef_msgsubdef(value_f)); |
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} |
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jsonenc_putstr(e, "}"); |
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} |
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static void jsonenc_listvalue(jsonenc *e, const upb_msg *msg, |
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const upb_msgdef *m) { |
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const upb_fielddef *values_f = upb_msgdef_itof(m, 1); |
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const upb_msgdef *values_m = upb_fielddef_msgsubdef(values_f); |
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const upb_array *values = upb_msg_get(msg, values_f).array_val; |
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const size_t size = upb_array_size(values); |
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size_t i; |
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bool first = true; |
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jsonenc_putstr(e, "["); |
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for (i = 0; i < size; i++) { |
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upb_msgval elem = upb_array_get(values, i); |
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jsonenc_putsep(e, ", ", &first); |
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jsonenc_value(e, elem.msg_val, values_m); |
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} |
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jsonenc_putstr(e, "]"); |
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} |
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static void jsonenc_value(jsonenc *e, const upb_msg *msg, const upb_msgdef *m) { |
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/* TODO(haberman): do we want a reflection method to get oneof case? */ |
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size_t iter = UPB_MSG_BEGIN; |
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const upb_fielddef *f; |
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upb_msgval val; |
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if (!upb_msg_next(msg, m, NULL, &f, &val, &iter)) { |
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jsonenc_err(e, "No value set in Value proto"); |
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} |
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switch (upb_fielddef_number(f)) { |
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case 1: |
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jsonenc_putstr(e, "null"); |
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break; |
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case 2: |
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jsonenc_double(e, "%.17g", val.double_val); |
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break; |
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case 3: |
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jsonenc_string(e, val.str_val); |
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break; |
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case 4: |
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jsonenc_putstr(e, val.bool_val ? "true" : "false"); |
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break; |
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case 5: |
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jsonenc_struct(e, val.msg_val, upb_fielddef_msgsubdef(f)); |
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break; |
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case 6: |
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jsonenc_listvalue(e, val.msg_val, upb_fielddef_msgsubdef(f)); |
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break; |
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} |
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} |
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static void jsonenc_msgfield(jsonenc *e, const upb_msg *msg, |
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const upb_msgdef *m) { |
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switch (upb_msgdef_wellknowntype(m)) { |
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case UPB_WELLKNOWN_UNSPECIFIED: |
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jsonenc_msg(e, msg, m); |
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break; |
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case UPB_WELLKNOWN_ANY: |
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jsonenc_any(e, msg, m); |
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break; |
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case UPB_WELLKNOWN_FIELDMASK: |
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jsonenc_fieldmask(e, msg, m); |
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break; |
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case UPB_WELLKNOWN_DURATION: |
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jsonenc_duration(e, msg, m); |
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break; |
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case UPB_WELLKNOWN_TIMESTAMP: |
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jsonenc_timestamp(e, msg, m); |
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break; |
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case UPB_WELLKNOWN_DOUBLEVALUE: |
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case UPB_WELLKNOWN_FLOATVALUE: |
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case UPB_WELLKNOWN_INT64VALUE: |
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case UPB_WELLKNOWN_UINT64VALUE: |
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case UPB_WELLKNOWN_INT32VALUE: |
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case UPB_WELLKNOWN_UINT32VALUE: |
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case UPB_WELLKNOWN_STRINGVALUE: |
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case UPB_WELLKNOWN_BYTESVALUE: |
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case UPB_WELLKNOWN_BOOLVALUE: |
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jsonenc_wrapper(e, msg, m); |
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break; |
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case UPB_WELLKNOWN_VALUE: |
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jsonenc_value(e, msg, m); |
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break; |
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case UPB_WELLKNOWN_LISTVALUE: |
||||
jsonenc_listvalue(e, msg, m); |
||||
break; |
||||
case UPB_WELLKNOWN_STRUCT: |
||||
jsonenc_listvalue(e, msg, m); |
||||
break; |
||||
} |
||||
} |
||||
|
||||
static void jsonenc_scalar(jsonenc *e, upb_msgval val, const upb_fielddef *f) { |
||||
switch (upb_fielddef_type(f)) { |
||||
case UPB_TYPE_BOOL: |
||||
jsonenc_putstr(e, val.bool_val ? "true" : "false"); |
||||
break; |
||||
case UPB_TYPE_FLOAT: |
||||
jsonenc_double(e, "%.9g", val.float_val); |
||||
break; |
||||
case UPB_TYPE_DOUBLE: |
||||
jsonenc_double(e, "%.17g", val.double_val); |
||||
break; |
||||
case UPB_TYPE_INT32: |
||||
jsonenc_printf(e, "%" PRId32, val.int32_val); |
||||
break; |
||||
case UPB_TYPE_UINT32: |
||||
jsonenc_printf(e, "%" PRIu32, val.uint32_val); |
||||
break; |
||||
case UPB_TYPE_INT64: |
||||
jsonenc_printf(e, "\"%" PRId64 "\"", val.int64_val); |
||||
break; |
||||
case UPB_TYPE_UINT64: |
||||
jsonenc_printf(e, "\"%" PRIu64 "\"", val.uint64_val); |
||||
break; |
||||
case UPB_TYPE_STRING: |
||||
jsonenc_string(e, val.str_val); |
||||
break; |
||||
case UPB_TYPE_BYTES: |
||||
jsonenc_bytes(e, val.str_val); |
||||
break; |
||||
case UPB_TYPE_ENUM: |
||||
jsonenc_enum(val.int32_val, f, e); |
||||
break; |
||||
case UPB_TYPE_MESSAGE: |
||||
jsonenc_msgfield(e, val.msg_val, upb_fielddef_msgsubdef(f)); |
||||
break; |
||||
} |
||||
} |
||||
|
||||
static void jsonenc_mapkey(jsonenc *e, upb_msgval val, const upb_fielddef *f) { |
||||
jsonenc_putstr(e, "\""); |
||||
|
||||
switch (upb_fielddef_type(f)) { |
||||
case UPB_TYPE_BOOL: |
||||
jsonenc_putstr(e, val.bool_val ? "true" : "false"); |
||||
break; |
||||
case UPB_TYPE_INT32: |
||||
jsonenc_printf(e, "%" PRId32, val.int32_val); |
||||
break; |
||||
case UPB_TYPE_UINT32: |
||||
jsonenc_printf(e, "%" PRIu32, val.uint32_val); |
||||
break; |
||||
case UPB_TYPE_INT64: |
||||
jsonenc_printf(e, "%" PRId64, val.int64_val); |
||||
break; |
||||
case UPB_TYPE_UINT64: |
||||
jsonenc_printf(e, "%" PRIu64, val.uint64_val); |
||||
break; |
||||
case UPB_TYPE_STRING: |
||||
jsonenc_stringbody(e, val.str_val); |
||||
default: |
||||
UPB_UNREACHABLE(); |
||||
} |
||||
|
||||
jsonenc_putstr(e, "\": "); |
||||
} |
||||
|
||||
static void jsonenc_array(jsonenc *e, const upb_array *arr, |
||||
const upb_fielddef *f) { |
||||
size_t i; |
||||
size_t size = upb_array_size(arr); |
||||
bool first = true; |
||||
|
||||
jsonenc_putstr(e, "["); |
||||
|
||||
for (i = 0; i < size; i++) { |
||||
jsonenc_putsep(e, ", ", &first); |
||||
jsonenc_scalar(e, upb_array_get(arr, i), f); |
||||
} |
||||
|
||||
jsonenc_putstr(e, "]"); |
||||
} |
||||
|
||||
static void jsonenc_map(jsonenc *e, const upb_map *map, const upb_fielddef *f) { |
||||
const upb_msgdef *entry = upb_fielddef_msgsubdef(f); |
||||
const upb_fielddef *key_f = upb_msgdef_itof(entry, 1); |
||||
const upb_fielddef *val_f = upb_msgdef_itof(entry, 2); |
||||
size_t iter = UPB_MAP_BEGIN; |
||||
bool first = true; |
||||
|
||||
jsonenc_putstr(e, "{"); |
||||
|
||||
while (upb_mapiter_next(map, &iter)) { |
||||
jsonenc_putsep(e, ", ", &first); |
||||
jsonenc_mapkey(e, upb_mapiter_key(map, iter), key_f); |
||||
jsonenc_scalar(e, upb_mapiter_value(map, iter), val_f); |
||||
} |
||||
|
||||
jsonenc_putstr(e, "}"); |
||||
} |
||||
|
||||
static void jsonenc_fieldval(jsonenc *e, const upb_fielddef *f, |
||||
upb_msgval val, bool *first) { |
||||
char buf[128]; |
||||
const char *name; |
||||
|
||||
if (e->options & UPB_JSONENC_PROTONAMES) { |
||||
name = upb_fielddef_name(f); |
||||
} else { |
||||
/* TODO(haberman): we need a better JSON name API. */ |
||||
upb_fielddef_getjsonname(f, buf, sizeof(buf)); |
||||
name = buf; |
||||
} |
||||
|
||||
jsonenc_putsep(e, ", ", first); |
||||
jsonenc_printf(e, "\"%s\": ", name); |
||||
|
||||
if (upb_fielddef_ismap(f)) { |
||||
jsonenc_map(e, val.map_val, f); |
||||
} else if (upb_fielddef_isseq(f)) { |
||||
jsonenc_array(e, val.array_val, f); |
||||
} else { |
||||
jsonenc_scalar(e, val, f); |
||||
} |
||||
} |
||||
|
||||
static void jsonenc_msg(jsonenc *e, const upb_msg *msg, const upb_msgdef *m) { |
||||
upb_msgval val; |
||||
const upb_fielddef *f; |
||||
bool first = true; |
||||
|
||||
jsonenc_putstr(e, "{"); |
||||
|
||||
if (e->options & UPB_JSONENC_EMITDEFAULTS) { |
||||
/* Iterate over all fields. */ |
||||
upb_msg_field_iter i; |
||||
for (upb_msg_field_begin(&i, m); !upb_msg_field_done(&i); |
||||
upb_msg_field_next(&i)) { |
||||
f = upb_msg_iter_field(&i); |
||||
jsonenc_fieldval(e, f, upb_msg_get(msg, f), &first); |
||||
} |
||||
} else { |
||||
/* Iterate over non-empty fields. */ |
||||
size_t iter = UPB_MSG_BEGIN; |
||||
while (upb_msg_next(msg, m, e->ext_pool, &f, &val, &iter)) { |
||||
jsonenc_fieldval(e, f, val, &first); |
||||
} |
||||
} |
||||
|
||||
jsonenc_putstr(e, "}"); |
||||
} |
||||
|
||||
size_t jsonenc_nullz(jsonenc *e, size_t size) { |
||||
size_t ret = e->ptr - e->buf + e->overflow; |
||||
|
||||
if (size > 0) { |
||||
if (e->ptr == e->end) e->ptr--; |
||||
*e->ptr = '\0'; |
||||
} |
||||
|
||||
return ret; |
||||
} |
||||
|
||||
size_t upb_json_encode(const upb_msg *msg, const upb_msgdef *m, |
||||
const upb_symtab *ext_pool, int options, char *buf, |
||||
size_t size, upb_status *status) { |
||||
jsonenc e; |
||||
|
||||
e.buf = buf; |
||||
e.ptr = buf; |
||||
e.end = buf + size; |
||||
e.overflow = 0; |
||||
e.options = options; |
||||
e.ext_pool = ext_pool; |
||||
e.status = status; |
||||
|
||||
if (setjmp(e.err)) return -1; |
||||
|
||||
jsonenc_msg(&e, msg, m); |
||||
return jsonenc_nullz(&e, size); |
||||
} |
||||
@ -0,0 +1,36 @@ |
||||
|
||||
#ifndef UPB_JSONENCODE_H_ |
||||
#define UPB_JSONENCODE_H_ |
||||
|
||||
#include "upb/def.h" |
||||
|
||||
#ifdef __cplusplus |
||||
extern "C" { |
||||
#endif |
||||
|
||||
enum { |
||||
/* When set, emits 0/default values. TOOD(haberman): proto3 only? */ |
||||
UPB_JSONENC_EMITDEFAULTS = 1, |
||||
|
||||
/* When set, use normal (snake_caes) field names instead of JSON (camelCase)
|
||||
names. */ |
||||
UPB_JSONENC_PROTONAMES = 2 |
||||
}; |
||||
|
||||
/* Encodes the given |msg| to JSON format. The message's reflection is given in
|
||||
* |m|. The symtab in |symtab| is used to find extensions (if NULL, extensions |
||||
* will not be printed). |
||||
* |
||||
* Output is placed in the given buffer, and always NULL-terminated. The output |
||||
* size (excluding NULL) is returned. This means that a return value >= |size| |
||||
* implies that the output was truncated. (These are the same semantics as |
||||
* snprintf()). */ |
||||
size_t upb_json_encode(const upb_msg *msg, const upb_msgdef *m, |
||||
const upb_symtab *ext_pool, int options, char *buf, |
||||
size_t size, upb_status *status); |
||||
|
||||
#ifdef __cplusplus |
||||
} /* extern "C" */ |
||||
#endif |
||||
|
||||
#endif /* UPB_JSONENCODE_H_ */ |
||||
Loading…
Reference in new issue