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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrAuditTrail.h"
void GrAuditTrail::JsonifyTArray(SkString* json, const char* name, const FrameArray& array) {
if (array.count()) {
json->appendf("\"%s\": [", name);
for (int i = 0; i < array.count(); i++) {
json->append(array[i]->toJson());
if (i < array.count() - 1) {
json->append(",");
}
}
json->append("]");
}
}
// This will pretty print a very small subset of json
// The parsing rules are straightforward, aside from the fact that we do not want an extra newline
// before ',' and after '}', so we have a comma exception rule.
class PrettyPrintJson {
public:
SkString prettify(const SkString& json) {
fPrettyJson.reset();
fTabCount = 0;
fFreshLine = false;
fCommaException = false;
for (size_t i = 0; i < json.size(); i++) {
if ('[' == json[i] || '{' == json[i]) {
this->newline();
this->appendChar(json[i]);
fTabCount++;
this->newline();
} else if (']' == json[i] || '}' == json[i]) {
fTabCount--;
this->newline();
this->appendChar(json[i]);
fCommaException = true;
} else if (',' == json[i]) {
this->appendChar(json[i]);
this->newline();
} else {
this->appendChar(json[i]);
}
}
return fPrettyJson;
}
private:
void appendChar(char appendee) {
if (fCommaException && ',' != appendee) {
this->newline();
}
this->tab();
fPrettyJson += appendee;
fFreshLine = false;
fCommaException = false;
}
void tab() {
if (fFreshLine) {
for (int i = 0; i < fTabCount; i++) {
fPrettyJson += '\t';
}
}
}
void newline() {
if (!fFreshLine) {
fFreshLine = true;
fPrettyJson += '\n';
}
}
SkString fPrettyJson;
int fTabCount;
bool fFreshLine;
bool fCommaException;
};
static SkString pretty_print_json(SkString json) {
class PrettyPrintJson prettyPrintJson;
return prettyPrintJson.prettify(json);
}
SkString GrAuditTrail::toJson() const {
SkString json;
json.append("{");
JsonifyTArray(&json, "Stacks", fFrames);
json.append("}");
// TODO if this becomes a performance issue we should make pretty print configurable
return pretty_print_json(json);
}
SkString GrAuditTrail::Frame::toJson() const {
SkString json;
json.append("{");
json.appendf("\"Name\": \"%s\",", fName);
JsonifyTArray(&json, "Frames", fChildren);
json.append("}");
return json;
}
SkString GrAuditTrail::Batch::toJson() const {
SkString json;
json.append("{");
json.appendf("\"Name\": \"%s\",", fName);
json.append("\"Bounds\": {");
json.appendf("\"Left\": %f,", fBounds.fLeft);
json.appendf("\"Right\": %f,", fBounds.fRight);
json.appendf("\"Top\": %f,", fBounds.fTop);
json.appendf("\"Bottom\": %f", fBounds.fBottom);
json.append("}");
json.append("}");
return json;
}
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