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      1 /*
      2  * Copyright 2016 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #include <iostream>
      9 
     10 #include "SkDebugCanvas.h"
     11 #include "SkNullCanvas.h"
     12 #include "SkStream.h"
     13 
     14 #ifdef SK_BUILD_FOR_WIN
     15 #include <fcntl.h>
     16 #include <io.h>
     17 #endif
     18 
     19 /*
     20 If you execute skp_parser with one argument, it spits out a json representation
     21 of the skp, but that's incomplete since it's missing many binary blobs (these
     22 could represent images or typefaces or just anything that doesn't currently
     23 have a json representation).  Each unique blob is labeled with a string in the
     24 form "data/%d".  So for example:
     25 
     26     tools/git-sync-deps
     27     bin/gn gen out/debug
     28     ninja -C out/debug dm skp_parser
     29     out/debug/dm -m grayscale -w /tmp/dm --config skp
     30     out/debug/skp_parser /tmp/dm/skp/gm/grayscalejpg.skp | less
     31     out/debug/skp_parser /tmp/dm/skp/gm/grayscalejpg.skp | grep data
     32     out/debug/skp_parser /tmp/dm/skp/gm/grayscalejpg.skp data/0 | file -
     33     out/debug/skp_parser /tmp/dm/skp/gm/grayscalejpg.skp data/0 > /tmp/data0.png
     34 
     35 "data/0" is an image that the SKP serializer has encoded as PNG.
     36 */
     37 int main(int argc, char** argv) {
     38     if (argc < 2) {
     39         SkDebugf("Usage:\n  %s SKP_FILE [DATA_URL]\n", argv[0]);
     40         return 1;
     41     }
     42     SkFILEStream input(argv[1]);
     43     if (!input.isValid()) {
     44         SkDebugf("Bad file: '%s'\n", argv[1]);
     45         return 2;
     46     }
     47     sk_sp<SkPicture> pic = SkPicture::MakeFromStream(&input);
     48     if (!pic) {
     49         SkDebugf("Bad skp: '%s'\n", argv[1]);
     50         return 3;
     51     }
     52     SkISize size = pic->cullRect().roundOut().size();
     53     SkDebugCanvas debugCanvas(size.width(), size.height());
     54     pic->playback(&debugCanvas);
     55     std::unique_ptr<SkCanvas> nullCanvas = SkMakeNullCanvas();
     56     UrlDataManager dataManager(SkString("data"));
     57     Json::Value json = debugCanvas.toJSON(
     58             dataManager, debugCanvas.getSize(), nullCanvas.get());
     59     if (argc > 2) {
     60         if (UrlDataManager::UrlData* data =
     61             dataManager.getDataFromUrl(SkString(argv[2]))) {
     62             SkData* skdata = data->fData.get();
     63             SkASSERT(skdata);
     64             #ifdef SK_BUILD_FOR_WIN
     65             fflush(stdout);
     66             (void)_setmode(_fileno(stdout), _O_BINARY);
     67             #endif
     68             fwrite(skdata->data(), skdata->size(), 1, stdout);
     69         } else {
     70             SkDebugf("Bad data url.\n");
     71             return 4;
     72         }
     73     } else {
     74         Json::StyledStreamWriter("  ").write(std::cout, json);
     75     }
     76     return 0;
     77 }
     78