95 lines
2.0 KiB
C++
95 lines
2.0 KiB
C++
#include "asciidoc.h"
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#include <fstream>
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#include <signal.h>
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#include <stdlib.h>
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#include <string.h>
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#include "Wt/WString.h"
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#ifndef WT_WIN32
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#include <unistd.h>
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#endif
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namespace {
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std::string tempFileName()
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{
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#ifndef WT_WIN32
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char spool[20];
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strcpy(spool, "/tmp/wtXXXXXX");
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int i = mkstemp(spool);
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close(i);
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#else
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char spool[2 * L_tmpnam];
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tmpnam(spool);
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#endif
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return std::string(spool);
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}
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std::string readFileToString(const std::string& fileName)
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{
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std::fstream file(fileName.c_str(), std::ios::in | std::ios::binary | std::ios::ate);
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int length = file.tellg();
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file.seekg(0, std::ios::beg);
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std::unique_ptr<char[]> buf(new char[length]);
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file.read(buf.get(), length);
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file.close();
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return std::string(buf.get(), length);
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}
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}
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Wt::WString asciidoc(const Wt::WString& src)
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{
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std::string srcFileName = tempFileName();
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std::string htmlFileName = tempFileName();
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{
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std::ofstream srcFile(srcFileName.c_str(), std::ios::out);
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std::string ssrc = src.toUTF8();
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srcFile.write(ssrc.c_str(), (std::streamsize)ssrc.length());
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srcFile.close();
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}
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#if defined(ASCIIDOCTOR_EXECUTABLE)
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#define xstr(s) str(s)
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#define str(s) #s
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std::string cmd = xstr(ASCIIDOCTOR_EXECUTABLE);
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#else
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std::string cmd = "asciidoctor";
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#endif
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std::string command = cmd + " -a htmlsyntax=xml -o " + htmlFileName + " -s " + srcFileName;
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#ifndef WT_WIN32
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/*
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* So, asciidoc apparently sends a SIGINT which is caught by its parent
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* process.. So we have to temporarily ignore it.
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*/
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struct sigaction newAction, oldAction;
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newAction.sa_handler = SIG_IGN;
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newAction.sa_flags = 0;
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sigemptyset(&newAction.sa_mask);
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sigaction(SIGINT, &newAction, &oldAction);
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#endif
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bool ok = system(command.c_str()) == 0;
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#ifndef WT_WIN32
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sigaction(SIGINT, &oldAction, 0);
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#endif
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Wt::WString result;
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if (ok) {
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result = Wt::WString(readFileToString(htmlFileName));
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} else
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result = Wt::WString("<i>Could not execute asciidoc</i>");
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unlink(srcFileName.c_str());
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unlink(htmlFileName.c_str());
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return result;
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}
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