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/*
* 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 "SkGraphics.h"
#include "SkOSFile.h"
#include "SkPicture.h"
#include "SkStream.h"
#include "SkTArray.h"
#include "PdfRenderer.h"
#include "picture_utils.h"
/**
* 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>... <outputDir> \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");
}
/** 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;
}
/** 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) {
sk_tools::make_filepath(path, dir, name);
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 bool write_output(const SkString& outputDir,
const SkString& inputFilename,
const sk_tools::PdfRenderer& renderer) {
SkString outputPath;
if (!make_output_filepath(&outputPath, outputDir, inputFilename)) {
return false;
}
bool isWritten = renderer.write(outputPath);
if (!isWritten) {
SkDebugf("Could not write to file %s\n", outputPath.c_str());
}
return isWritten;
}
/** 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;
sk_tools::get_basename(&inputFilename, inputPath);
SkFILEStream inputStream;
inputStream.setPath(inputPath.c_str());
if (!inputStream.isValid()) {
SkDebugf("Could not open file %s\n", inputPath.c_str());
return false;
}
bool success = false;
SkAutoTUnref<SkPicture>
picture(SkNEW_ARGS(SkPicture, (&inputStream, &success)));
if (!success) {
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());
renderer.init(picture);
renderer.render();
success = write_output(outputDir, inputFilename, renderer);
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;
sk_tools::make_filepath(&inputPath, input, inputFilename);
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) {
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 {
inputs->push_back(SkString(*argv));
}
}
if (inputs->count() < 2) {
usage(argv0);
exit(-1);
}
}
int tool_main(int argc, char** argv);
int tool_main(int argc, char** argv) {
SkAutoGraphics ag;
SkTArray<SkString> inputs;
SkAutoTUnref<sk_tools::PdfRenderer>
renderer(SkNEW(sk_tools::SimplePdfRenderer));
SkASSERT(renderer.get());
parse_commandline(argc, argv, &inputs);
SkString outputDir = inputs[inputs.count() - 1];
int failures = 0;
for (int i = 0; i < inputs.count() - 1; i ++) {
failures += process_input(inputs[i], outputDir, *renderer);
}
if (failures != 0) {
SkDebugf("Failed to render %i PDFs.\n", failures);
return 1;
}
}
#if !defined SK_BUILD_FOR_IOS
int main(int argc, char * const argv[]) {
return tool_main(argc, (char**) argv);
}
#endif
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