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Enhancements to ext/misc/randomjson.c.

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FossilOrigin-Name: a4e6d1f86f3a502e4170f5a90031e269e48363e95114a66b84d373e3ce0b2704
This commit is contained in:
drh
2023-12-18 12:18:47 +00:00
parent 0d201598a5
commit 2ae95649de
3 changed files with 45 additions and 16 deletions
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47
ext/misc/randomjson.c
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@ -26,6 +26,7 @@
**
** .load ./randomjson
** SELECT random_json(1);
** SELECT random_json5(1);
*/
#ifdef SQLITE_STATIC_RANDOMJSON
# include "sqlite3.h"
@ -55,17 +56,18 @@ static unsigned int prngInt(Prng *p){
return p->x ^ p->y;
}
static const char *azJsonAtoms[] = {
static char *azJsonAtoms[] = {
/* JSON JSON-5 */
"0", "0",
"1", "1",
"-1", "-1",
"2", "+2",
"3", "3",
"2.5", "2.5",
"3DDDD", "3DDDD",
"2.5DD", "2.5DD",
"0.75", ".75",
"-4.0e2", "-4.e2",
"5.0e-3", "+5e-3",
"6.DDe+0DD", "6.DDe+0DD",
"0", "0x0",
"512", "0x200",
"256", "+0x100",
@ -77,12 +79,14 @@ static const char *azJsonAtoms[] = {
"-9.0e999", "-Infinity",
"9.0e999", "+Infinity",
"null", "NaN",
"-0.0005123", "-0.0005123",
"-0.0005DD", "-0.0005DD",
"4.35e-3", "+4.35e-3",
"\"gem\\\"hay\"", "\"gem\\\"hay\"",
"\"icy'joy\"", "'icy\\'joy\'",
"\"keylog\"", "\"key\\\nlog\"",
"\"mix\\\\\\tnet\"", "\"mix\\\\\\tnet\"",
"\"oat\\r\\n\"", "\"oat\\r\\n\"",
"\"\\fpan\\b\"", "\"\\fpan\\b\"",
"{}", "{}",
"[]", "[]",
"[]", "[/*empty*/]",
@ -93,19 +97,21 @@ static const char *azJsonAtoms[] = {
"\"day\"", "\"day\"",
"\"end\"", "'end'",
"\"fly\"", "\"fly\"",
"\"\\u00XX\\u00XX\"", "\"\\xXX\\xXX\"",
"\"y\\uXXXXz\"", "\"y\\uXXXXz\"",
"\"\"", "\"\"",
};
static const char *azJsonTemplate[] = {
static char *azJsonTemplate[] = {
/* JSON JSON-5 */
"{\"a\":%,\"b\":%,\"c\":%}", "{a:%,b:%,c:%}",
"{\"a\":%,\"b\":%,\"cDD\":%}", "{a:%,b:%,cDD:%}",
"{\"a\":%,\"b\":%,\"c\":%,\"d\":%,\"e\":%}", "{a:%,b:%,c:%,d:%,e:%}",
"{\"a\":%,\"b\":%,\"c\":%,\"d\":%,\"\":%}", "{a:%,b:%,c:%,d:%,'':%}",
"{\"d\":%}", "{d:%}",
"{\"eeee\":%, \"ffff\":%}", "{eeee:% /*and*/, ffff:%}",
"{\"$g\":%,\"_h_\":%}", "{$g:%,_h_:%,}",
"{\"x\":%,\n \"y\":%}", "{\"x\":%,\n \"y\":%}",
"{\"a b c d\":%,\"e\":%,\"f\":%,\"\\u0078\":%,\"y\":%}",
"{\"a b c d\":%,\"\\x65\":%,\"\\u0066\":%,x:%,y:%}",
"{\"a b c d\":%,\"\\u00XX\":%,\"\\uXXXX\":%,\"x\":%,\"y\":%}",
"{\"a b c d\":%,\"\\xXX\":%,\"\\uXXXX\":%,x:%,y:%}",
"{\"Z\":%}", "{Z:%,}",
"[%]", "[%,]",
"[%,%]", "[%,%]",
@ -126,8 +132,10 @@ static void jsonExpand(
unsigned int r /* Growth probability 0..1000. 0 means no growth */
){
unsigned int i, j, k;
const char *z;
char *z;
char *zX;
size_t n;
char zBuf[200];
j = 0;
if( zSrc==0 ){
@ -153,6 +161,27 @@ static void jsonExpand(
z = azJsonTemplate[k];
}
n = strlen(z);
if( (zX = strstr(z,"XX"))!=0 ){
unsigned int r = prngInt(p);
memcpy(zBuf, z, n+1);
z = zBuf;
zX = strstr(z,"XX");
while( zX!=0 ){
zX[0] = "0123456789abcdef"[r%16]; r /= 16;
zX[1] = "0123456789abcdef"[r%16]; r /= 16;
zX = strstr(zX, "XX");
}
}else if( (zX = strstr(z,"DD"))!=0 ){
unsigned int r = prngInt(p);
memcpy(zBuf, z, n+1);
z = zBuf;
zX = strstr(z,"DD");
while( zX!=0 ){
zX[0] = "0123456789"[r%10]; r /= 10;
zX[1] = "0123456789"[r%10]; r /= 10;
zX = strstr(zX, "DD");
}
}
if( j+n<STRSZ ){
memcpy(&zDest[j], z, n);
j += (int)n;