tools/render_pdfs_main.cpp - skia - Git at Google

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */

 #include "SkCanvas.h"
 #include "SkDevice.h"
 #include "SkForceLinking.h"
 #include "SkGraphics.h"
 #include "SkImageEncoder.h"
 #include "SkOSFile.h"
 #include "SkPicture.h"
 #include "SkPixelRef.h"
 #include "SkStream.h"
 #include "SkTArray.h"
 #include "PdfRenderer.h"
 #include "picture_utils.h"

 __SK_FORCE_IMAGE_DECODER_LINKING;

 #ifdef SK_USE_CDB
 #include "win_dbghelp.h"
 #endif

 /**
  * render_pdfs
  *
  * Given list of directories and files to use as input, expects to find .skp
  * files and it will convert them to .pdf files writing them in the output
  * directory.
  *
  * Returns zero exit code if all .skp files were converted successfully,
  * otherwise returns error code 1.
  */

 static const char PDF_FILE_EXTENSION[] = "pdf";
 static const char SKP_FILE_EXTENSION[] = "skp";

 static void usage(const char* argv0) {
     SkDebugf("SKP to PDF rendering tool\n");
     SkDebugf("\n"
 "Usage: \n"
 "     %s <input>... [-w <outputDir>] [--jpegQuality N] \n"
 , argv0);
     SkDebugf("\n\n");
     SkDebugf(
 "     input:     A list of directories and files to use as input. Files are\n"
 "                expected to have the .skp extension.\n\n");
     SkDebugf(
 "     outputDir: directory to write the rendered pdfs.\n\n");
     SkDebugf("\n");
         SkDebugf(
 "     jpegQuality N: encodes images in JPEG at quality level N, which can\n"
 "                    be in range 0-100).\n"
 "                    N = -1 will disable JPEG compression.\n"
 "                    Default is N = 100, maximum quality.\n\n");
     SkDebugf("\n");
 }

 /** Replaces the extension of a file.
  * @param path File name whose extension will be changed.
  * @param old_extension The old extension.
  * @param new_extension The new extension.
  * @returns false if the file did not has the expected extension.
  *  if false is returned, contents of path are undefined.
  */
 static bool replace_filename_extension(SkString* path,
                                        const char old_extension[],
                                        const char new_extension[]) {
     if (path->endsWith(old_extension)) {
         path->remove(path->size() - strlen(old_extension),
                      strlen(old_extension));
         if (!path->endsWith(".")) {
             return false;
         }
         path->append(new_extension);
         return true;
     }
     return false;
 }

 int gJpegQuality = 100;
 // the size_t* parameter is deprecated, so we ignore it
 static SkData* encode_to_dct_data(size_t*, const SkBitmap& bitmap) {
     if (gJpegQuality == -1) {
         return NULL;
     }

     SkBitmap bm = bitmap;
 #if defined(SK_BUILD_FOR_MAC)
     // Workaround bug #1043 where bitmaps with referenced pixels cause
     // CGImageDestinationFinalize to crash
     SkBitmap copy;
     bitmap.deepCopyTo(&copy);
     bm = copy;
 #endif

     return SkImageEncoder::EncodeData(bm,
                                       SkImageEncoder::kJPEG_Type,
                                       gJpegQuality);
 }

 /** Builds the output filename. path = dir/name, and it replaces expected
  * .skp extension with .pdf extention.
  * @param path Output filename.
  * @param name The name of the file.
  * @returns false if the file did not has the expected extension.
  *  if false is returned, contents of path are undefined.
  */
 static bool make_output_filepath(SkString* path, const SkString& dir,
                                  const SkString& name) {
     *path = SkOSPath::SkPathJoin(dir.c_str(), name.c_str());
     return replace_filename_extension(path,
                                       SKP_FILE_EXTENSION,
                                       PDF_FILE_EXTENSION);
 }

 /** Write the output of pdf renderer to a file.
  * @param outputDir Output dir.
  * @param inputFilename The skp file that was read.
  * @param renderer The object responsible to write the pdf file.
  */
 static SkWStream* open_stream(const SkString& outputDir,
                               const SkString& inputFilename) {
     if (outputDir.isEmpty()) {
         return SkNEW(SkDynamicMemoryWStream);
     }

     SkString outputPath;
     if (!make_output_filepath(&outputPath, outputDir, inputFilename)) {
         return NULL;
     }

     SkFILEWStream* stream = SkNEW_ARGS(SkFILEWStream, (outputPath.c_str()));
     if (!stream->isValid()) {
         SkDebugf("Could not write to file %s\n", outputPath.c_str());
         return NULL;
     }

     return stream;
 }

 /** Reads an skp file, renders it to pdf and writes the output to a pdf file
  * @param inputPath The skp file to be read.
  * @param outputDir Output dir.
  * @param renderer The object responsible to render the skp object into pdf.
  */
 static bool render_pdf(const SkString& inputPath, const SkString& outputDir,
                        sk_tools::PdfRenderer& renderer) {
     SkString inputFilename = SkOSPath::SkBasename(inputPath.c_str());

     SkFILEStream inputStream;
     inputStream.setPath(inputPath.c_str());
     if (!inputStream.isValid()) {
         SkDebugf("Could not open file %s\n", inputPath.c_str());
         return false;
     }

     SkAutoTUnref<SkPicture> picture(SkPicture::CreateFromStream(&inputStream));

     if (NULL == picture.get()) {
         SkDebugf("Could not read an SkPicture from %s\n", inputPath.c_str());
         return false;
     }

     SkDebugf("exporting... [%i %i] %s\n", picture->width(), picture->height(),
              inputPath.c_str());

     SkWStream* stream(open_stream(outputDir, inputFilename));

     if (!stream) {
         return false;
     }

     renderer.init(picture, stream);

     bool success = renderer.render();
     SkDELETE(stream);

     renderer.end();

     return success;
 }

 /** For each file in the directory or for the file passed in input, call
  * render_pdf.
  * @param input A directory or an skp file.
  * @param outputDir Output dir.
  * @param renderer The object responsible to render the skp object into pdf.
  */
 static int process_input(const SkString& input, const SkString& outputDir,
                          sk_tools::PdfRenderer& renderer) {
     int failures = 0;
     if (sk_isdir(input.c_str())) {
         SkOSFile::Iter iter(input.c_str(), SKP_FILE_EXTENSION);
         SkString inputFilename;
         while (iter.next(&inputFilename)) {
             SkString inputPath = SkOSPath::SkPathJoin(input.c_str(), inputFilename.c_str());
             if (!render_pdf(inputPath, outputDir, renderer)) {
                 ++failures;
             }
         }
     } else {
         SkString inputPath(input);
         if (!render_pdf(inputPath, outputDir, renderer)) {
             ++failures;
         }
     }
     return failures;
 }

 static void parse_commandline(int argc, char* const argv[],
                               SkTArray<SkString>* inputs,
                               SkString* outputDir) {
     const char* argv0 = argv[0];
     char* const* stop = argv + argc;

     for (++argv; argv < stop; ++argv) {
         if ((0 == strcmp(*argv, "-h")) || (0 == strcmp(*argv, "--help"))) {
             usage(argv0);
             exit(-1);
         } else if (0 == strcmp(*argv, "-w")) {
             ++argv;
             if (argv >= stop) {
                 SkDebugf("Missing outputDir for -w\n");
                 usage(argv0);
                 exit(-1);
             }
             *outputDir = SkString(*argv);
         } else if (0 == strcmp(*argv, "--jpegQuality")) {
             ++argv;
             if (argv >= stop) {
                 SkDebugf("Missing argument for --jpegQuality\n");
                 usage(argv0);
                 exit(-1);
             }
             gJpegQuality = atoi(*argv);
             if (gJpegQuality < -1 || gJpegQuality > 100) {
                 SkDebugf("Invalid argument for --jpegQuality\n");
                 usage(argv0);
                 exit(-1);
             }
         } else {
             inputs->push_back(SkString(*argv));
         }
     }

     if (inputs->count() < 1) {
         usage(argv0);
         exit(-1);
     }
 }

 int tool_main_core(int argc, char** argv);
 int tool_main_core(int argc, char** argv) {
     SkAutoGraphics ag;
     SkTArray<SkString> inputs;

     SkAutoTUnref<sk_tools::PdfRenderer>
         renderer(SkNEW_ARGS(sk_tools::SimplePdfRenderer, (encode_to_dct_data)));
     SkASSERT(renderer.get());

     SkString outputDir;
     parse_commandline(argc, argv, &inputs, &outputDir);

     int failures = 0;
     for (int i = 0; i < inputs.count(); i ++) {
         failures += process_input(inputs[i], outputDir, *renderer);
     }

     if (failures != 0) {
         SkDebugf("Failed to render %i PDFs.\n", failures);
         return 1;
     }

     return 0;
 }

 int tool_main(int argc, char** argv);
 int tool_main(int argc, char** argv) {
 #ifdef SK_USE_CDB
     setUpDebuggingFromArgs(argv[0]);
     __try {
 #endif
       return tool_main_core(argc, argv);
 #ifdef SK_USE_CDB
     }
     __except(GenerateDumpAndPrintCallstack(GetExceptionInformation()))
     {
         return -1;
     }
 #endif
     return 0;
 }

 #if !defined SK_BUILD_FOR_IOS
 int main(int argc, char * const argv[]) {
     return tool_main(argc, (char**) argv);
 }
 #endif
	/*
	* Copyright 2012 Google Inc.
	*
	* Use of this source code is governed by a BSD-style license that can be
	* found in the LICENSE file.
	*/

	#include "SkCanvas.h"
	#include "SkDevice.h"
	#include "SkForceLinking.h"
	#include "SkGraphics.h"
	#include "SkImageEncoder.h"
	#include "SkOSFile.h"
	#include "SkPicture.h"
	#include "SkPixelRef.h"
	#include "SkStream.h"
	#include "SkTArray.h"
	#include "PdfRenderer.h"
	#include "picture_utils.h"

	__SK_FORCE_IMAGE_DECODER_LINKING;

	#ifdef SK_USE_CDB
	#include "win_dbghelp.h"
	#endif

	/**
	* render_pdfs
	*
	* Given list of directories and files to use as input, expects to find .skp
	* files and it will convert them to .pdf files writing them in the output
	* directory.
	*
	* Returns zero exit code if all .skp files were converted successfully,
	* otherwise returns error code 1.
	*/

	static const char PDF_FILE_EXTENSION[] = "pdf";
	static const char SKP_FILE_EXTENSION[] = "skp";

	static void usage(const char* argv0) {
	SkDebugf("SKP to PDF rendering tool\n");
	SkDebugf("\n"
	"Usage: \n"
	" %s <input>... [-w <outputDir>] [--jpegQuality N] \n"
	, argv0);
	SkDebugf("\n\n");
	SkDebugf(
	" input: A list of directories and files to use as input. Files are\n"
	" expected to have the .skp extension.\n\n");
	SkDebugf(
	" outputDir: directory to write the rendered pdfs.\n\n");
	SkDebugf("\n");
	SkDebugf(
	" jpegQuality N: encodes images in JPEG at quality level N, which can\n"
	" be in range 0-100).\n"
	" N = -1 will disable JPEG compression.\n"
	" Default is N = 100, maximum quality.\n\n");
	SkDebugf("\n");
	}

	/** Replaces the extension of a file.
	* @param path File name whose extension will be changed.
	* @param old_extension The old extension.
	* @param new_extension The new extension.
	* @returns false if the file did not has the expected extension.
	* if false is returned, contents of path are undefined.
	*/
	static bool replace_filename_extension(SkString* path,
	const char old_extension[],
	const char new_extension[]) {
	if (path->endsWith(old_extension)) {
	path->remove(path->size() - strlen(old_extension),
	strlen(old_extension));
	if (!path->endsWith(".")) {
	return false;
	}
	path->append(new_extension);
	return true;
	}
	return false;
	}

	int gJpegQuality = 100;
	// the size_t* parameter is deprecated, so we ignore it
	static SkData* encode_to_dct_data(size_t*, const SkBitmap& bitmap) {
	if (gJpegQuality == -1) {
	return NULL;
	}

	SkBitmap bm = bitmap;
	#if defined(SK_BUILD_FOR_MAC)
	// Workaround bug #1043 where bitmaps with referenced pixels cause
	// CGImageDestinationFinalize to crash
	SkBitmap copy;
	bitmap.deepCopyTo(&copy);
	bm = copy;
	#endif

	return SkImageEncoder::EncodeData(bm,
	SkImageEncoder::kJPEG_Type,
	gJpegQuality);
	}

	/** Builds the output filename. path = dir/name, and it replaces expected
	* .skp extension with .pdf extention.
	* @param path Output filename.
	* @param name The name of the file.
	* @returns false if the file did not has the expected extension.
	* if false is returned, contents of path are undefined.
	*/
	static bool make_output_filepath(SkString* path, const SkString& dir,
	const SkString& name) {
	*path = SkOSPath::SkPathJoin(dir.c_str(), name.c_str());
	return replace_filename_extension(path,
	SKP_FILE_EXTENSION,
	PDF_FILE_EXTENSION);
	}

	/** Write the output of pdf renderer to a file.
	* @param outputDir Output dir.
	* @param inputFilename The skp file that was read.
	* @param renderer The object responsible to write the pdf file.
	*/
	static SkWStream* open_stream(const SkString& outputDir,
	const SkString& inputFilename) {
	if (outputDir.isEmpty()) {
	return SkNEW(SkDynamicMemoryWStream);
	}

	SkString outputPath;
	if (!make_output_filepath(&outputPath, outputDir, inputFilename)) {
	return NULL;
	}

	SkFILEWStream* stream = SkNEW_ARGS(SkFILEWStream, (outputPath.c_str()));
	if (!stream->isValid()) {
	SkDebugf("Could not write to file %s\n", outputPath.c_str());
	return NULL;
	}

	return stream;
	}

	/** Reads an skp file, renders it to pdf and writes the output to a pdf file
	* @param inputPath The skp file to be read.
	* @param outputDir Output dir.
	* @param renderer The object responsible to render the skp object into pdf.
	*/
	static bool render_pdf(const SkString& inputPath, const SkString& outputDir,
	sk_tools::PdfRenderer& renderer) {
	SkString inputFilename = SkOSPath::SkBasename(inputPath.c_str());

	SkFILEStream inputStream;
	inputStream.setPath(inputPath.c_str());
	if (!inputStream.isValid()) {
	SkDebugf("Could not open file %s\n", inputPath.c_str());
	return false;
	}

	SkAutoTUnref<SkPicture> picture(SkPicture::CreateFromStream(&inputStream));

	if (NULL == picture.get()) {
	SkDebugf("Could not read an SkPicture from %s\n", inputPath.c_str());
	return false;
	}

	SkDebugf("exporting... [%i %i] %s\n", picture->width(), picture->height(),
	inputPath.c_str());

	SkWStream* stream(open_stream(outputDir, inputFilename));

	if (!stream) {
	return false;
	}

	renderer.init(picture, stream);

	bool success = renderer.render();
	SkDELETE(stream);

	renderer.end();

	return success;
	}

	/** For each file in the directory or for the file passed in input, call
	* render_pdf.
	* @param input A directory or an skp file.
	* @param outputDir Output dir.
	* @param renderer The object responsible to render the skp object into pdf.
	*/
	static int process_input(const SkString& input, const SkString& outputDir,
	sk_tools::PdfRenderer& renderer) {
	int failures = 0;
	if (sk_isdir(input.c_str())) {
	SkOSFile::Iter iter(input.c_str(), SKP_FILE_EXTENSION);
	SkString inputFilename;
	while (iter.next(&inputFilename)) {
	SkString inputPath = SkOSPath::SkPathJoin(input.c_str(), inputFilename.c_str());
	if (!render_pdf(inputPath, outputDir, renderer)) {
	++failures;
	}
	}
	} else {
	SkString inputPath(input);
	if (!render_pdf(inputPath, outputDir, renderer)) {
	++failures;
	}
	}
	return failures;
	}

	static void parse_commandline(int argc, char* const argv[],
	SkTArray<SkString>* inputs,
	SkString* outputDir) {
	const char* argv0 = argv[0];
	char* const* stop = argv + argc;

	for (++argv; argv < stop; ++argv) {
	if ((0 == strcmp(argv, "-h")) \|\| (0 == strcmp(argv, "--help"))) {
	usage(argv0);
	exit(-1);
	} else if (0 == strcmp(*argv, "-w")) {
	++argv;
	if (argv >= stop) {
	SkDebugf("Missing outputDir for -w\n");
	usage(argv0);
	exit(-1);
	}
	outputDir = SkString(argv);
	} else if (0 == strcmp(*argv, "--jpegQuality")) {
	++argv;
	if (argv >= stop) {
	SkDebugf("Missing argument for --jpegQuality\n");
	usage(argv0);
	exit(-1);
	}
	gJpegQuality = atoi(*argv);
	if (gJpegQuality < -1 \|\| gJpegQuality > 100) {
	SkDebugf("Invalid argument for --jpegQuality\n");
	usage(argv0);
	exit(-1);
	}
	} else {
	inputs->push_back(SkString(*argv));
	}
	}

	if (inputs->count() < 1) {
	usage(argv0);
	exit(-1);
	}
	}

	int tool_main_core(int argc, char** argv);
	int tool_main_core(int argc, char** argv) {
	SkAutoGraphics ag;
	SkTArray<SkString> inputs;

	SkAutoTUnref<sk_tools::PdfRenderer>
	renderer(SkNEW_ARGS(sk_tools::SimplePdfRenderer, (encode_to_dct_data)));
	SkASSERT(renderer.get());

	SkString outputDir;
	parse_commandline(argc, argv, &inputs, &outputDir);

	int failures = 0;
	for (int i = 0; i < inputs.count(); i ++) {
	failures += process_input(inputs[i], outputDir, *renderer);
	}

	if (failures != 0) {
	SkDebugf("Failed to render %i PDFs.\n", failures);
	return 1;
	}

	return 0;
	}

	int tool_main(int argc, char** argv);
	int tool_main(int argc, char** argv) {
	#ifdef SK_USE_CDB
	setUpDebuggingFromArgs(argv[0]);
	__try {
	#endif
	return tool_main_core(argc, argv);
	#ifdef SK_USE_CDB
	}
	__except(GenerateDumpAndPrintCallstack(GetExceptionInformation()))
	{
	return -1;
	}
	#endif
	return 0;
	}

	#if !defined SK_BUILD_FOR_IOS
	int main(int argc, char * const argv[]) {
	return tool_main(argc, (char**) argv);
	}
	#endif