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// Copyright (C) 2013, 2014 Andreas Politz
// Author: Andreas Politz <politza@fh-trier.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 _EPDF_H_
#define _EPDF_H_ _EPDF_H_
#include "config.h"
#include <glib.h>
#include <poppler.h>
#include <png.h>
/* Some library functions print warnings to stdout, inhibit it. */
#define DISCARD_STDOUT(saved_fd) \
do { \
int __fd; \
fflush(stdout); \
saved_fd = dup(1); \
__fd = open("/dev/null", O_WRONLY); \
dup2(__fd, 1); \
close(__fd); \
} while (0)
#define UNDISCARD_STDOUT(saved_fd) \
do { \
fflush(stdout); \
dup2(saved_fd, 1); \
close(saved_fd); \
} while (0)
/* Writing responses */
#define OK_BEGIN() \
do { \
puts("OK"); \
} while (0)
#define OK_END() \
do { \
puts("."); \
fflush (stdout); \
} while (0)
#define OK() \
do { \
puts ("OK\n."); \
fflush (stdout); \
} while (0)
/* Dealing with image data. */
#ifdef WORDS_BIGENDIAN
#define ARGB_TO_RGB(rgb, argb) \
do { \
rgb[0] = argb[1]; \
rgb[1] = argb[2]; \
rgb[2] = argb[3]; \
} while (0)
#define ARGB_EQUAL(argb1, argb2) \
(argb1[1] == argb2[1] \
&& argb1[2] == argb2[2] \
&& argb1[3] == argb2[3])
#else
#define ARGB_TO_RGB(rgb, argb) \
do { \
rgb[0] = argb[2]; \
rgb[1] = argb[1]; \
rgb[2] = argb[0]; \
} while (0)
#define ARGB_EQUAL(argb1, argb2) \
(argb1[0] == argb2[0] \
&& argb1[1] == argb2[1] \
&& argb1[2] == argb2[2])
#endif
#define NORMALIZE_PAGE_ARG(doc, first, last) \
*first = MAX(1, *first); \
if (*last <= 0) \
*last = poppler_document_get_n_pages (doc); \
else \
*last = MIN(*last, poppler_document_get_n_pages (doc));
/* png_jmpbuf is supposed to be not available in older versions of
libpng. */
#ifndef png_jmpbuf
# define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
#endif
#ifndef HAVE_ERROR_H
# define error(status, errno, fmt, args...) \
do { \
int error = (errno); \
fflush (stdout); \
fprintf (stderr, "%s: " fmt, PACKAGE_NAME, ## args); \
if (error) \
fprintf (stderr, ": %s", strerror (error)); \
fprintf (stderr, "\n"); \
exit (status); \
} while (0)
#endif
#define internal_error(fmt, args...) \
error (2, 0, "internal error in %s: " fmt, __func__, ## args)
#define error_if_not(expr) \
if (! (expr)) goto error;
#define perror_if_not(expr, fmt, args...) \
do { \
if (! (expr)) \
{ \
printf_error_response ((fmt), ## args); \
goto error; \
} \
} while (0)
#define cerror_if_not(expr, error_msg, fmt, args...) \
do { \
if (! (expr)) \
{ \
if (error_msg) \
*(error_msg) = g_strdup_printf((fmt), ## args); \
goto error; \
} \
} while (0)
/* Declare commands */
#define DEC_CMD(name) \
{#name, cmd_ ## name, cmd_ ## name ## _spec, \
G_N_ELEMENTS (cmd_ ## name ## _spec)}
#define DEC_CMD2(command, name) \
{name, cmd_ ## command, cmd_ ## command ## _spec, \
G_N_ELEMENTS (cmd_ ## command ## _spec)}
/* Declare option */
#define DEC_DOPT(name, type, sname) \
{name, type, offsetof (document_options_t, sname)}
enum suffix_char { NONE, COLON, NEWLINE};
enum image_type { PPM, PNG };
typedef struct
{
PopplerAnnotMapping *amap;
gchar *key;
} annotation_t;
typedef enum
{
ARG_INVALID = 0,
ARG_DOC,
ARG_BOOL,
ARG_STRING,
ARG_NONEMPTY_STRING,
ARG_NATNUM,
ARG_EDGE,
ARG_EDGE_OR_NEGATIVE,
ARG_EDGES,
ARG_EDGES_OR_POSITION,
ARG_COLOR,
ARG_REST
} command_arg_type_t;
typedef struct
{
const char *name;
command_arg_type_t type;
size_t offset;
} document_option_t;
typedef struct
{
PopplerColor bg, fg;
gboolean usecolors;
gboolean printed;
} render_options_t;
typedef struct
{
render_options_t render;
} document_options_t;
typedef struct
{
PopplerDocument *pdf;
char *filename;
char *passwd;
struct
{
GHashTable *keys; /* key => page */
GList **pages; /* page array */
} annotations;
document_options_t options;
} document_t;
typedef struct
{
command_arg_type_t type;
union
{
gboolean flag;
const char *string;
long natnum;
document_t *doc;
gdouble edge;
PopplerColor color;
PopplerRectangle rectangle;
#ifdef HAVE_POPPLER_ANNOT_MARKUP
PopplerQuadrilateral quadrilateral;
#endif
struct
{
char * const *args;
int nargs;
} rest;
} value;
} command_arg_t;
typedef struct
{
GHashTable *documents;
} epdfinfo_t;
typedef struct
{
const char *name;
void (* execute) (const epdfinfo_t *ctxt, const command_arg_t *args);
const command_arg_type_t *args_spec;
int nargs;
} command_t;
/* Defined in poppler-hack.cc */
#ifdef HAVE_POPPLER_ANNOT_WRITE
extern void xpoppler_annot_set_rectangle (PopplerAnnot*, PopplerRectangle*);
#endif
extern gchar *xpoppler_annot_markup_get_created (PopplerAnnotMarkup*);
#endif /* _EPDF_H_ */
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