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-rw-r--r--src/json.c160
1 files changed, 140 insertions, 20 deletions
diff --git a/src/json.c b/src/json.c
index 63feff948..3e2d6646d 100644
--- a/src/json.c
+++ b/src/json.c
@@ -104,6 +104,7 @@ static const char * const jsonType[] = {
#define JNODE_PATCH 0x10 /* Patch with JsonNode.u.pPatch */
#define JNODE_APPEND 0x20 /* More ARRAY/OBJECT entries at u.iAppend */
#define JNODE_LABEL 0x40 /* Is a label of an object */
+#define JNODE_JSON5 0x80 /* Node contains JSON5 enhancements */
/* A single node of parsed JSON
@@ -296,6 +297,72 @@ static void jsonAppendString(JsonString *p, const char *zIn, u32 N){
}
/*
+** The zIn[0..N] string is a JSON5 string literal. Append to p a translation
+** of the string literal that standard JSON and that omits all JSON5
+** features.
+*/
+static void jsonAppendNormalizedString(JsonString *p, const char *zIn, u32 N){
+ jsonAppendChar(p, '"');
+ jsonAppendRaw(p, &zIn[1], N-2); /* TODO: translate JSON5 escapes */
+ jsonAppendChar(p, '"');
+}
+
+/*
+** The zIn[0..N] string is a JSON5 integer literal. Append to p a translation
+** of the string literal that standard JSON and that omits all JSON5
+** features.
+*/
+static void jsonAppendNormalizedInt(JsonString *p, const char *zIn, u32 N){
+ if( zIn[0]=='+' ){
+ zIn++;
+ N--;
+ }else if( zIn[0]=='-' ){
+ jsonAppendChar(p, '-');
+ zIn++;
+ N--;
+ }
+ while( zIn[0]=='0' && N>1 ){
+ zIn++;
+ N--;
+ }
+ jsonAppendRaw(p, zIn, N);
+}
+
+/*
+** The zIn[0..N] string is a JSON5 real literal. Append to p a translation
+** of the string literal that standard JSON and that omits all JSON5
+** features.
+*/
+static void jsonAppendNormalizedReal(JsonString *p, const char *zIn, u32 N){
+ int i;
+ if( zIn[0]=='+' ){
+ zIn++;
+ N--;
+ }else if( zIn[0]=='-' ){
+ jsonAppendChar(p, '-');
+ zIn++;
+ N--;
+ }
+ if( zIn[0]=='.' ){
+ jsonAppendChar(p, '0');
+ }
+ for(i=0; i<N; i++){
+ if( zIn[i]=='.' && (i+1==N || !sqlite3Isdigit(zIn[i+1])) ){
+ jsonAppendRaw(p, zIn, i);
+ zIn += i;
+ N -= i;
+ jsonAppendChar(p, '0');
+ break;
+ }
+ }
+ if( N>0 ){
+ jsonAppendRaw(p, zIn, N);
+ }
+}
+
+
+
+/*
** Append a function parameter value to the JSON string under
** construction.
*/
@@ -425,17 +492,32 @@ static void jsonRenderNode(
break;
}
case JSON_STRING: {
+ assert( pNode->eU==1 );
if( pNode->jnFlags & JNODE_RAW ){
- assert( pNode->eU==1 );
jsonAppendString(pOut, pNode->u.zJContent, pNode->n);
- break;
+ }else if( pNode->jnFlags & JNODE_JSON5 ){
+ jsonAppendNormalizedString(pOut, pNode->u.zJContent, pNode->n);
+ }else{
+ jsonAppendRaw(pOut, pNode->u.zJContent, pNode->n);
}
- /* no break */ deliberate_fall_through
+ break;
+ }
+ case JSON_REAL: {
+ assert( pNode->eU==1 );
+ if( pNode->jnFlags & JNODE_JSON5 ){
+ jsonAppendNormalizedReal(pOut, pNode->u.zJContent, pNode->n);
+ }else{
+ jsonAppendRaw(pOut, pNode->u.zJContent, pNode->n);
+ }
+ break;
}
- case JSON_REAL:
case JSON_INT: {
assert( pNode->eU==1 );
- jsonAppendRaw(pOut, pNode->u.zJContent, pNode->n);
+ if( pNode->jnFlags & JNODE_JSON5 ){
+ jsonAppendNormalizedInt(pOut, pNode->u.zJContent, pNode->n);
+ }else{
+ jsonAppendRaw(pOut, pNode->u.zJContent, pNode->n);
+ }
break;
}
case JSON_ARRAY: {
@@ -615,9 +697,10 @@ static void jsonReturn(
const char *z;
char *zOut;
u32 j;
+ u32 nOut = n;
assert( pNode->eU==1 );
z = pNode->u.zJContent;
- zOut = sqlite3_malloc( n+1 );
+ zOut = sqlite3_malloc( nOut+1 );
if( zOut==0 ){
sqlite3_result_error_nomem(pCtx);
break;
@@ -669,6 +752,15 @@ static void jsonReturn(
c = '\r';
}else if( c=='t' ){
c = '\t';
+ }else if( c=='v' ){
+ c = '\v';
+ }else if( c=='\'' ){
+ c = '\'';
+ }else if( c=='0' ){
+ c = 0;
+ }else if( c=='x' ){
+ c = (jsonHexToInt(z[i+1])<<4) | jsonHexToInt(z[i+2]);
+ i += 2;
}
zOut[j++] = c;
}
@@ -750,12 +842,17 @@ static int jsonParseAddNode(
}
/*
+** Return true if z[] begins with 2 (or more) hexadecimal digits
+*/
+static int jsonIs2Hex(const char *z){
+ return sqlite3Isxdigit(z[0]) && sqlite3Isxdigit(z[1]);
+}
+
+/*
** Return true if z[] begins with 4 (or more) hexadecimal digits
*/
static int jsonIs4Hex(const char *z){
- int i;
- for(i=0; i<4; i++) if( !sqlite3Isxdigit(z[i]) ) return 0;
- return 1;
+ return jsonIs2Hex(z) && jsonIs2Hex(&z[2]);
}
/*
@@ -978,9 +1075,17 @@ json_parse_restart:
pParse->aNode[iThis].n = pParse->nNode - (u32)iThis - 1;
return j+1;
}
- case '"': {
+ case '\'': {
+ u8 jnFlags;
+ char cDelim;
+ pParse->has5 = 1;
+ jnFlags = JNODE_JSON5;
+ goto parse_string;
+ case '"':
/* Parse string */
- u8 jnFlags = 0;
+ jnFlags = 0;
+ parse_string:
+ cDelim = z[i];
j = i+1;
for(;;){
c = z[j];
@@ -992,12 +1097,16 @@ json_parse_restart:
c = z[++j];
if( c=='"' || c=='\\' || c=='/' || c=='b' || c=='f'
|| c=='n' || c=='r' || c=='t'
- || (c=='u' && jsonIs4Hex(z+j+1)) ){
- jnFlags = JNODE_ESCAPE;
+ || (c=='u' && jsonIs4Hex(&z[j+1])) ){
+ jnFlags |= JNODE_ESCAPE;
+ }else if( c=='\'' || c=='0' || c=='v'
+ || (c=='x' && jsonIs2Hex(&z[j+1])) ){
+ jnFlags |= (JNODE_ESCAPE|JNODE_JSON5);
+ pParse->has5 = 1;
}else{
return -1;
}
- }else if( c=='"' ){
+ }else if( c==cDelim ){
break;
}
j++;
@@ -1027,9 +1136,11 @@ json_parse_restart:
}
return -1;
}
- case '+':
+ case '+': {
+ u8 seenDP, seenE, jnFlags;
pParse->has5 = 1;
- /* fall through */
+ jnFlags = JNODE_JSON5;
+ goto parse_number;
case '-':
case '0':
case '1':
@@ -1040,10 +1151,12 @@ json_parse_restart:
case '6':
case '7':
case '8':
- case '9': {
+ case '9':
/* Parse number */
- u8 seenDP = 0;
- u8 seenE = 0;
+ jnFlags = 0;
+ parse_number:
+ seenDP = 0;
+ seenE = 0;
assert( '-' < '0' );
assert( '+' < '0' );
assert( '.' < '0' );
@@ -1053,10 +1166,14 @@ json_parse_restart:
if( c=='0' ){
if( sqlite3Isdigit(z[i+1]) ){
pParse->has5 = 1;
+ jnFlags = JNODE_JSON5;
}
}else{
if( !sqlite3Isdigit(z[i+1]) ) return -1;
- if( z[i+1]=='0' && sqlite3Isdigit(z[i+2]) ) pParse->has5 = 1;
+ if( z[i+1]=='0' && sqlite3Isdigit(z[i+2]) ){
+ pParse->has5 = 1;
+ jnFlags = JNODE_JSON5;
+ }
}
}
for(j=i+1;; j++){
@@ -1103,6 +1220,9 @@ json_parse_restart:
if( z[j-1]<'0' ) return -1;
jsonParseAddNode(pParse, seenDP ? JSON_REAL : JSON_INT,
j - i, &z[i]);
+ if( jnFlags && !pParse->oom ){
+ pParse->aNode[pParse->nNode-1].jnFlags = jnFlags;
+ }
return j;
}
case '}': {
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-19 23:22:28 +0000