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Overview
| Comment: | Fix the path lookup for objects so that it can handle quoted identifier names and non-alphanumerics in the identifier. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | json |
| Files: | files | file ages | folders |
| SHA1: |
87f5873004f69396baa7c67937342b4e |
| User & Date: | drh 2015-08-19 23:02:49 |
Context
|
2015-08-20
| ||
| 23:39 | Merge the latest changes from trunk, including the table-valued function implementation. (check-in: 10c44432 user: drh tags: json) | |
|
2015-08-19
| ||
| 23:02 | Fix the path lookup for objects so that it can handle quoted identifier names and non-alphanumerics in the identifier. (check-in: 87f58730 user: drh tags: json) | |
| 22:47 | Add the json_each(JSON,PATH) table-valued-function. (check-in: 3335ac17 user: drh tags: json) | |
Changes
Changes to ext/misc/json.c.
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*/
static JsonNode *jsonLookup(
JsonParse *pParse, /* The JSON to search */
u32 iRoot, /* Begin the search at this node */
const char *zPath, /* The path to search */
int *pApnd /* Append nodes to complete path if not NULL */
){
u32 i, j, k;
JsonNode *pRoot = &pParse->aNode[iRoot];
if( zPath[0]==0 ) return pRoot;
if( zPath[0]=='.' ){
if( pRoot->eType!=JSON_OBJECT ) return 0;
zPath++;
for(i=0; isalnum(zPath[i]); i++){}
if( i==0 ) return 0;
j = 1;
for(;;){
while( j<=pRoot->n ){
if( pRoot[j].n==i+2
&& strncmp(&pRoot[j].u.zJContent[1],zPath,i)==0
){
return jsonLookup(pParse, iRoot+j+1, &zPath[i], pApnd);
}
j++;
j += jsonSize(&pRoot[j]);
}
if( (pRoot->jnFlags & JNODE_APPEND)==0 ) break;
|
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*/
static JsonNode *jsonLookup(
JsonParse *pParse, /* The JSON to search */
u32 iRoot, /* Begin the search at this node */
const char *zPath, /* The path to search */
int *pApnd /* Append nodes to complete path if not NULL */
){
u32 i, j, k, nKey;
const char *zKey;
JsonNode *pRoot = &pParse->aNode[iRoot];
if( zPath[0]==0 ) return pRoot;
if( zPath[0]=='.' ){
if( pRoot->eType!=JSON_OBJECT ) return 0;
zPath++;
if( zPath[0]=='"' ){
zKey = zPath + 1;
for(i=1; zPath[i] && zPath[i]!='"'; i++){}
nKey = i-1;
if( zPath[i] ) i++;
}else{
zKey = zPath;
for(i=0; zPath[i] && zPath[i]!='.' && zPath[i]!='['; i++){}
nKey = i;
}
if( nKey==0 ) return 0;
j = 1;
for(;;){
while( j<=pRoot->n ){
if( pRoot[j].n==nKey+2
&& strncmp(&pRoot[j].u.zJContent[1],zKey,nKey)==0
){
return jsonLookup(pParse, iRoot+j+1, &zPath[i], pApnd);
}
j++;
j += jsonSize(&pRoot[j]);
}
if( (pRoot->jnFlags & JNODE_APPEND)==0 ) break;
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