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Diffstat (limited to 'storage/connect/json.cpp')
-rw-r--r--storage/connect/json.cpp164
1 files changed, 70 insertions, 94 deletions
diff --git a/storage/connect/json.cpp b/storage/connect/json.cpp
index 5d7d08285cf..f6dca8146d6 100644
--- a/storage/connect/json.cpp
+++ b/storage/connect/json.cpp
@@ -93,9 +93,8 @@ char *NextChr(PSZ s, char sep)
PJSON ParseJson(PGLOBAL g, char *s, int len, int *ptyp, bool *comma)
{
int i, pretty = (ptyp) ? *ptyp : 3;
- bool b = false, pty[3] = {true, true, true};
- PJSON jsp = NULL;
- STRG src;
+ bool b = false, pty[3] = {true,true,true};
+ PJSON jsp = NULL, jp = NULL;
if (trace(1))
htrc("ParseJson: s=%.10s len=%d\n", s, len);
@@ -106,27 +105,29 @@ PJSON ParseJson(PGLOBAL g, char *s, int len, int *ptyp, bool *comma)
} else if (comma)
*comma = false;
- src.str = s;
- src.len = len;
-
// Trying to guess the pretty format
if (s[0] == '[' && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')))
pty[0] = false;
try {
- for (i = 0; i < len; i++)
+ jp = new(g) JSON();
+ jp->s = s;
+ jp->len = len;
+ jp->pty = pty;
+
+ for (i = 0; i < jp->len; i++)
switch (s[i]) {
case '[':
if (jsp)
- goto tryit;
- else if (!(jsp = ParseArray(g, ++i, src, pty)))
- throw 1;
+ jsp = jp->ParseAsArray(g, i, pretty, ptyp);
+ else
+ jsp = jp->ParseArray(g, ++i);
break;
case '{':
if (jsp)
- goto tryit;
- else if (!(jsp = ParseObject(g, ++i, src, pty)))
+ jsp = jp->ParseAsArray(g, i, pretty, ptyp);
+ else if (!(jsp = jp->ParseObject(g, ++i)))
throw 2;
break;
@@ -157,8 +158,8 @@ PJSON ParseJson(PGLOBAL g, char *s, int len, int *ptyp, bool *comma)
/* falls through */
default:
if (jsp)
- goto tryit;
- else if (!(jsp = ParseValue(g, i, src, pty)))
+ jsp = jp->ParseAsArray(g, i, pretty, ptyp);
+ else if (!(jsp = jp->ParseValue(g, i)))
throw 4;
break;
@@ -187,10 +188,17 @@ PJSON ParseJson(PGLOBAL g, char *s, int len, int *ptyp, bool *comma)
} // end catch
return jsp;
+} // end of ParseJson
-tryit:
+/***********************************************************************/
+/* Parse several items as being in an array. */
+/***********************************************************************/
+PJAR JSON::ParseAsArray(PGLOBAL g, int& i, int pretty, int *ptyp)
+{
if (pty[0] && (!pretty || pretty > 2)) {
- if ((jsp = ParseArray(g, (i = 0), src, pty)) && ptyp && pretty == 3)
+ PJAR jsp;
+
+ if ((jsp = ParseArray(g, (i = 0))) && ptyp && pretty == 3)
*ptyp = (pty[0]) ? 0 : 3;
return jsp;
@@ -198,26 +206,23 @@ tryit:
strcpy(g->Message, "More than one item in file");
return NULL;
-} // end of ParseJson
+} // end of ParseAsArray
/***********************************************************************/
/* Parse a JSON Array. */
/***********************************************************************/
-PJAR ParseArray(PGLOBAL g, int& i, STRG& src, bool *pty)
+PJAR JSON::ParseArray(PGLOBAL g, int& i)
{
- char *s = src.str;
- int len = src.len;
- int level = 0;
- bool b = (!i);
- PJAR jarp = new(g) JARRAY;
- PJVAL jvp = NULL;
+ int level = 0;
+ bool b = (!i);
+ PJAR jarp = new(g) JARRAY;
for (; i < len; i++)
switch (s[i]) {
case ',':
if (level < 2) {
sprintf(g->Message, "Unexpected ',' near %.*s",ARGS);
- return NULL;
+ throw 1;
} else
level = 1;
@@ -225,8 +230,8 @@ PJAR ParseArray(PGLOBAL g, int& i, STRG& src, bool *pty)
case ']':
if (level == 1) {
sprintf(g->Message, "Unexpected ',]' near %.*s", ARGS);
- return NULL;
- } // endif level
+ throw 1;
+ } // endif level
jarp->InitArray(g);
return jarp;
@@ -240,11 +245,9 @@ PJAR ParseArray(PGLOBAL g, int& i, STRG& src, bool *pty)
default:
if (level == 2) {
sprintf(g->Message, "Unexpected value near %.*s", ARGS);
- return NULL;
- } else if ((jvp = ParseValue(g, i, src, pty)))
- jarp->AddValue(g, jvp);
- else
- return NULL;
+ throw 1;
+ } else
+ jarp->AddValue(g, ParseValue(g, i));
level = (b) ? 1 : 2;
break;
@@ -256,18 +259,15 @@ PJAR ParseArray(PGLOBAL g, int& i, STRG& src, bool *pty)
return jarp;
} // endif b
- strcpy(g->Message, "Unexpected EOF in array");
- return NULL;
+ throw ("Unexpected EOF in array");
} // end of ParseArray
/***********************************************************************/
/* Parse a JSON Object. */
/***********************************************************************/
-PJOB ParseObject(PGLOBAL g, int& i, STRG& src, bool *pty)
+PJOB JSON::ParseObject(PGLOBAL g, int& i)
{
PSZ key;
- char *s = src.str;
- int len = src.len;
int level = 0;
PJOB jobp = new(g) JOBJECT;
PJPR jpp = NULL;
@@ -276,42 +276,37 @@ PJOB ParseObject(PGLOBAL g, int& i, STRG& src, bool *pty)
switch (s[i]) {
case '"':
if (level < 2) {
- if ((key = ParseString(g, ++i, src))) {
- jpp = jobp->AddPair(g, key);
- level = 1;
- } else
- return NULL;
-
+ key = ParseString(g, ++i);
+ jpp = jobp->AddPair(g, key);
+ level = 1;
} else {
sprintf(g->Message, "misplaced string near %.*s", ARGS);
- return NULL;
+ throw 2;
} // endif level
break;
case ':':
if (level == 1) {
- if (!(jpp->Val = ParseValue(g, ++i, src, pty)))
- return NULL;
-
+ jpp->Val = ParseValue(g, ++i);
level = 2;
} else {
sprintf(g->Message, "Unexpected ':' near %.*s", ARGS);
- return NULL;
+ throw 2;
} // endif level
break;
case ',':
if (level < 2) {
sprintf(g->Message, "Unexpected ',' near %.*s", ARGS);
- return NULL;
+ throw 2;
} else
- level = 1;
+ level = 0;
break;
case '}':
- if (level == 1) {
+ if (level < 2) {
sprintf(g->Message, "Unexpected '}' near %.*s", ARGS);
- return NULL;
+ throw 2;
} // endif level
return jobp;
@@ -324,20 +319,19 @@ PJOB ParseObject(PGLOBAL g, int& i, STRG& src, bool *pty)
default:
sprintf(g->Message, "Unexpected character '%c' near %.*s",
s[i], ARGS);
- return NULL;
+ throw 2;
}; // endswitch s[i]
strcpy(g->Message, "Unexpected EOF in Object");
- return NULL;
+ throw 2;
} // end of ParseObject
/***********************************************************************/
/* Parse a JSON Value. */
/***********************************************************************/
-PJVAL ParseValue(PGLOBAL g, int& i, STRG& src, bool *pty)
+PJVAL JSON::ParseValue(PGLOBAL g, int& i)
{
- char *strval, *s = src.str;
- int n, len = src.len;
+ int n;
PJVAL jvp = new(g) JVALUE;
for (; i < len; i++)
@@ -355,21 +349,13 @@ PJVAL ParseValue(PGLOBAL g, int& i, STRG& src, bool *pty)
suite:
switch (s[i]) {
case '[':
- if (!(jvp->Jsp = ParseArray(g, ++i, src, pty)))
- return NULL;
-
+ jvp->Jsp = ParseArray(g, ++i);
break;
case '{':
- if (!(jvp->Jsp = ParseObject(g, ++i, src, pty)))
- return NULL;
-
+ jvp->Jsp = ParseObject(g, ++i);
break;
case '"':
- if ((strval = ParseString(g, ++i, src)))
- jvp->Value = AllocateValue(g, strval, TYPE_STRING);
- else
- return NULL;
-
+ jvp->Value = AllocateValue(g, ParseString(g, ++i), TYPE_STRING);
break;
case 't':
if (!strncmp(s + i, "true", 4)) {
@@ -398,11 +384,9 @@ PJVAL ParseValue(PGLOBAL g, int& i, STRG& src, bool *pty)
break;
case '-':
default:
- if (s[i] == '-' || isdigit(s[i])) {
- if (!(jvp->Value = ParseNumeric(g, i, src)))
- goto err;
-
- } else
+ if (s[i] == '-' || isdigit(s[i]))
+ jvp->Value = ParseNumeric(g, i);
+ else
goto err;
}; // endswitch s[i]
@@ -410,25 +394,21 @@ PJVAL ParseValue(PGLOBAL g, int& i, STRG& src, bool *pty)
return jvp;
err:
- sprintf(g->Message, "Unexpected character '%c' near %.*s",
- s[i], ARGS);
- return NULL;
+ sprintf(g->Message, "Unexpected character '%c' near %.*s", s[i], ARGS);
+ throw 3;
} // end of ParseValue
/***********************************************************************/
/* Unescape and parse a JSON string. */
/***********************************************************************/
-char *ParseString(PGLOBAL g, int& i, STRG& src)
+char *JSON::ParseString(PGLOBAL g, int& i)
{
- char *s = src.str;
uchar *p;
- int n = 0, len = src.len;
+ int n = 0;
// Be sure of memory availability
- if (len + 1 - i > (signed)((PPOOLHEADER)g->Sarea)->FreeBlk) {
- strcpy(g->Message, "ParseString: Out of memory");
- return NULL;
- } // endif len
+ if (((size_t)len + 1 - i) > ((PPOOLHEADER)g->Sarea)->FreeBlk)
+ throw("ParseString: Out of memory");
// The size to allocate is not known yet
p = (uchar*)PlugSubAlloc(g, NULL, 0);
@@ -502,17 +482,16 @@ char *ParseString(PGLOBAL g, int& i, STRG& src)
}; // endswitch s[i]
err:
- strcpy(g->Message, "Unexpected EOF in String");
- return NULL;
+ throw("Unexpected EOF in String");
} // end of ParseString
/***********************************************************************/
/* Parse a JSON numeric value. */
/***********************************************************************/
-PVAL ParseNumeric(PGLOBAL g, int& i, STRG& src)
+PVAL JSON::ParseNumeric(PGLOBAL g, int& i)
{
- char *s = src.str, buf[50];
- int n = 0, len = src.len;
+ char buf[50];
+ int n = 0;
short nd = 0;
bool has_dot = false;
bool has_e = false;
@@ -575,14 +554,11 @@ PVAL ParseNumeric(PGLOBAL g, int& i, STRG& src)
i--; // Unstack following character
return valp;
- } else {
- strcpy(g->Message, "No digit found");
- return NULL;
- } // endif found_digit
+ } else
+ throw("No digit found");
err:
- strcpy(g->Message, "Unexpected EOF in number");
- return NULL;
+ throw("Unexpected EOF in number");
} // end of ParseNumeric
/***********************************************************************/
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