diff options
author | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
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committer | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
commit | e0c6872cf40896c7be36b11dcc744620f10adf1d (patch) | |
tree | 60335e10d2f4354b0674ec22d7b53f0f8abee672 /dviware/dvisvgm/src/Ghostscript.hpp |
Initial commit
Diffstat (limited to 'dviware/dvisvgm/src/Ghostscript.hpp')
-rw-r--r-- | dviware/dvisvgm/src/Ghostscript.hpp | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/dviware/dvisvgm/src/Ghostscript.hpp b/dviware/dvisvgm/src/Ghostscript.hpp new file mode 100644 index 0000000000..4ea62f775f --- /dev/null +++ b/dviware/dvisvgm/src/Ghostscript.hpp @@ -0,0 +1,104 @@ +/************************************************************************* +** Ghostscript.hpp ** +** ** +** This file is part of dvisvgm -- a fast DVI to SVG converter ** +** Copyright (C) 2005-2019 Martin Gieseking <martin.gieseking@uos.de> ** +** ** +** This program is free software; you can redistribute it and/or ** +** modify it under the terms of the GNU General Public License as ** +** published by the Free Software Foundation; either version 3 of ** +** the License, or (at your option) any later version. ** +** ** +** This program is distributed in the hope that it will be useful, but ** +** WITHOUT ANY WARRANTY; without even the implied warranty of ** +** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ** +** GNU General Public License for more details. ** +** ** +** You should have received a copy of the GNU General Public License ** +** along with this program; if not, see <http://www.gnu.org/licenses/>. ** +*************************************************************************/ + +#ifndef GHOSTSCRIPT_HPP +#define GHOSTSCRIPT_HPP + +#include <config.h> +#include <string> + +#if defined(DISABLE_GS) + #include "iapi.h" +#elif defined(HAVE_LIBGS) + #include <ghostscript/iapi.h> +#else + #include "DLLoader.hpp" + #include "iapi.h" +#endif + +#if defined(_WIN32) && !defined(_Windows) + #define _Windows +#endif + +#if defined(DISABLE_GS) +struct Ghostscript { + using Stdin = int (GSDLLCALLPTR)(void *caller, char *buf, int len); + using Stdout = int (GSDLLCALLPTR)(void *caller, const char *str, int len); + using Stderr = int (GSDLLCALLPTR)(void *caller, const char *str, int len); + + Ghostscript () {} + Ghostscript (int argc, const char **argv, void *caller=0) {} + bool init (int argc, const char **argv, void *caller=0) {return false;} + bool available () {return false;} + bool revision (gsapi_revision_t *r) {return false;} + int revision () {return 0;} + std::string revisionstr () {return "";} + int set_stdio (Stdin in, Stdout out, Stderr err) {return 0;} + int run_string_begin (int user_errors, int *pexit_code) {return 0;} + int run_string_continue (const char *str, unsigned int length, int user_errors, int *pexit_code) {return 0;} + int run_string_end (int user_errors, int *pexit_code) {return 0;} + int exit () {return 0;} + const char* error_name (int code) {return 0;} +}; + +#else + +/** Wrapper class of (a subset of) the Ghostscript API. */ +class Ghostscript +#if !defined(HAVE_LIBGS) +: public DLLoader +#endif +{ + public: + using Stdin = int (GSDLLCALLPTR)(void *caller, char *buf, int len); + using Stdout = int (GSDLLCALLPTR)(void *caller, const char *str, int len); + using Stderr = int (GSDLLCALLPTR)(void *caller, const char *str, int len); + + public: + Ghostscript (); + Ghostscript (int argc, const char **argv, void *caller=nullptr); + Ghostscript (const Ghostscript &gs) =delete; + ~Ghostscript (); + bool init (int argc, const char **argv, void *caller=nullptr); + bool available (); + bool revision (gsapi_revision_t *r); + int revision (); + std::string revisionstr (); + int set_stdio (Stdin in, Stdout out, Stderr err); + int run_string_begin (int user_errors, int *pexit_code); + int run_string_continue (const char *str, unsigned int length, int user_errors, int *pexit_code); + int run_string_end (int user_errors, int *pexit_code); + int exit (); + const char* error_name (int code); + + static std::string LIBGS_NAME; + + protected: + int init_with_args (int argc, char **argv); + int new_instance (void **psinst, void *caller); + void delete_instance (); + + private: + void *_inst = nullptr; ///< Ghostscript handle needed to call the gsapi_foo functions +}; + +#endif // DISABLE_GS + +#endif |