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authorPeter Breitenlohner <peb@mppmu.mpg.de>2013-07-10 15:35:21 +0000
committerPeter Breitenlohner <peb@mppmu.mpg.de>2013-07-10 15:35:21 +0000
commit5545f2236f9abc704ba6cc442841363b0ac5eb1b (patch)
treef74b65e87bc2f6be84feb3d5b88915e66ee7b470 /Build/source/texk/dvipdfm-x/mpost.c
parent233c204ecbc43730d329352806a24be175ced0b3 (diff)
dvipdfm-x: Continue merging dvipdfmx and xdvipdfmx
git-svn-id: svn://tug.org/texlive/trunk@31156 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/texk/dvipdfm-x/mpost.c')
-rw-r--r--Build/source/texk/dvipdfm-x/mpost.c1686
1 files changed, 1686 insertions, 0 deletions
diff --git a/Build/source/texk/dvipdfm-x/mpost.c b/Build/source/texk/dvipdfm-x/mpost.c
new file mode 100644
index 00000000000..c5feb0cb1b6
--- /dev/null
+++ b/Build/source/texk/dvipdfm-x/mpost.c
@@ -0,0 +1,1686 @@
+/*
+
+ This is dvipdfmx, an eXtended version of dvipdfm by Mark A. Wicks.
+
+ Copyright (C) 2007-2012 by Jin-Hwan Cho and Shunsaku Hirata,
+ the dvipdfmx project team.
+
+ Copyright (C) 1998, 1999 by Mark A. Wicks <mwicks@kettering.edu>
+
+ 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 2 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, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <ctype.h>
+#include <string.h>
+#include <math.h>
+
+#include "system.h"
+#include "mem.h"
+#include "error.h"
+#include "mfileio.h"
+#include "numbers.h"
+
+#include "tfm.h"
+
+#include "pdfobj.h"
+#include "pdfparse.h"
+#include "pdfdev.h"
+#include "pdfdoc.h"
+
+#include "pdfcolor.h"
+#include "pdfdraw.h"
+
+#include "fontmap.h"
+#include "subfont.h"
+
+#include "pdfximage.h"
+
+#include "mpost.h"
+
+/*
+ * In PDF, current path is not a part of graphics state parameter.
+ * Hence, current path is not saved by the "q" operator and is not
+ * recovered by the "Q" operator. This means that the following PS
+ * code
+ *
+ * <path construction> gsave <path painting> grestore ...
+ *
+ * can't be translated to PDF code
+ *
+ * <path construction> q <path painting> Q ...
+ *
+ * . Only clipping path (which is graphics state parameter in PDF
+ * too) is treated in the same way. So, we write clipping path
+ * immediately and forget about it but remember current path.
+ */
+
+static int mp_parse_body (const char **start, const char *end, double x_user, double y_user);
+
+static struct mp_font
+{
+ char *font_name;
+ int font_id;
+ int tfm_id; /* Used for text width calculation */
+ int subfont_id;
+ double pt_size;
+} font_stack[PDF_GSAVE_MAX] = {
+ {NULL, -1, -1, -1, 0}
+};
+static int currentfont = -1;
+
+#define CURRENT_FONT() ((currentfont < 0) ? NULL : &font_stack[currentfont])
+
+/* Compatibility */
+#define MP_CMODE_MPOST 0
+#define MP_CMODE_DVIPSK 1
+#define MP_CMODE_PTEXVERT 2
+static int mp_cmode = MP_CMODE_MPOST;
+
+static int
+mp_setfont (const char *font_name, double pt_size)
+{
+ const char *name = font_name;
+ struct mp_font *font;
+ int subfont_id = -1;
+ fontmap_rec *mrec;
+
+ font = CURRENT_FONT();
+
+ if (font) {
+ if (!strcmp(font->font_name, font_name) &&
+ font->pt_size == pt_size)
+ return 0;
+ } else { /* No currentfont */
+/* ***TODO*** Here some problem exists! */
+ font = &font_stack[0];
+ font->font_name = NULL;
+ currentfont = 0;
+ }
+
+ mrec = pdf_lookup_fontmap_record(font_name);
+ if (mrec && mrec->charmap.sfd_name && mrec->charmap.subfont_id) {
+ subfont_id = sfd_load_record(mrec->charmap.sfd_name, mrec->charmap.subfont_id);
+ }
+
+ /* See comments in dvi_locate_font() in dvi.c. */
+ if (mrec && mrec->map_name) {
+ name = mrec->map_name;
+ } else {
+ name = font_name;
+ }
+
+ if (font->font_name)
+ RELEASE(font->font_name);
+ font->font_name = NEW(strlen(font_name) + 1, char);
+ strcpy(font->font_name, font_name);
+ font->subfont_id = subfont_id;
+ font->pt_size = pt_size;
+ font->tfm_id = tfm_open(font_name, 0); /* Need not exist in MP mode */
+ font->font_id = pdf_dev_locate_font(name,
+ (spt_t) (pt_size * dev_unit_dviunit()));
+
+ if (font->font_id < 0) {
+ ERROR("MPOST: No physical font assigned for \"%s\".", font_name);
+ return 1;
+ }
+
+ return 0;
+}
+
+static void
+save_font (void)
+{
+ struct mp_font *current, *next;
+
+ if (currentfont < 0) {
+ font_stack[0].font_name = NEW(strlen("Courier") + 1, char);
+ strcpy(font_stack[0].font_name, "Courier");
+ font_stack[0].pt_size = 1;
+ font_stack[0].tfm_id = 0;
+ font_stack[0].subfont_id = 0;
+ currentfont = 0;
+ }
+
+ current = &font_stack[currentfont++];
+ next = &font_stack[currentfont ];
+ next->font_name = NEW(strlen(current->font_name)+1, char);
+ strcpy(next->font_name, current->font_name);
+ next->pt_size = current->pt_size;
+
+ next->subfont_id = current->subfont_id;
+ next->tfm_id = current->tfm_id;
+}
+
+static void
+restore_font (void)
+{
+ struct mp_font *current;
+
+ current = CURRENT_FONT();
+ if (current) {
+ if (current->font_name)
+ RELEASE(current->font_name);
+ current->font_name = NULL;
+ } else {
+ ERROR("No currentfont...");
+ }
+
+ currentfont--;
+}
+
+static void
+clear_fonts (void)
+{
+ while (currentfont >= 0) {
+ if (font_stack[currentfont].font_name)
+ RELEASE(font_stack[currentfont].font_name);
+ currentfont--;
+ }
+}
+
+static int
+is_fontname (const char *token)
+{
+ fontmap_rec *mrec;
+
+ mrec = pdf_lookup_fontmap_record(token);
+ if (mrec)
+ return 1;
+
+ return tfm_exists(token);
+}
+
+int
+mps_scan_bbox (const char **pp, const char *endptr, pdf_rect *bbox)
+{
+ char *number;
+ double values[4];
+ int i;
+
+ /* skip_white() skips lines starting '%'... */
+ while (*pp < endptr && isspace(**pp))
+ (*pp)++;
+
+ /* Scan for bounding box record */
+ while (*pp < endptr && **pp == '%') {
+ if (*pp + 14 < endptr &&
+ !strncmp(*pp, "%%BoundingBox:", 14)) {
+
+ *pp += 14;
+
+ for (i = 0; i < 4; i++) {
+ skip_white(pp, endptr);
+ number = parse_number(pp, endptr);
+ if (!number) {
+ break;
+ }
+ values[i] = atof(number);
+ RELEASE(number);
+ }
+ if (i < 4) {
+ return -1;
+ } else {
+ bbox->llx = values[0];
+ bbox->lly = values[1];
+ bbox->urx = values[2];
+ bbox->ury = values[3];
+
+ return 0;
+ }
+ }
+ skip_line (pp, endptr);
+ while (*pp < endptr && isspace(**pp))
+ (*pp)++;
+ }
+
+ return -1;
+}
+
+static void
+skip_prolog (const char **start, const char *end)
+{
+ int found_prolog = 0;
+ const char *save;
+
+ save = *start;
+ while (*start < end) {
+ if (**start != '%')
+ skip_white(start, end);
+ if (*start >= end)
+ break;
+ if (!strncmp(*start, "%%EndProlog", 11)) {
+ found_prolog = 1;
+ skip_line(start, end);
+ break;
+ } else if (!strncmp(*start, "%%Page:", 7)) {
+ skip_line(start, end);
+ break;
+ }
+ skip_line(start, end);
+ }
+ if (!found_prolog) {
+ *start = save;
+ }
+
+ return;
+}
+
+/* PostScript Operators */
+
+#define ADD 1
+#define SUB 2
+#define MUL 3
+#define DIV 4
+#define NEG 5
+#define TRUNCATE 6
+
+#define CLEAR 10
+#define EXCH 11
+#define POP 12
+
+#define NEWPATH 31
+#define CLOSEPATH 32
+#define MOVETO 33
+#define RMOVETO 34
+#define CURVETO 35
+#define RCURVETO 36
+#define LINETO 37
+#define RLINETO 38
+#define ARC 39
+#define ARCN 40
+
+#define FILL 41
+#define STROKE 42
+#define SHOW 43
+
+#define CLIP 44
+#define EOCLIP 45
+
+#define SHOWPAGE 49
+
+#define GSAVE 50
+#define GRESTORE 51
+
+#define CONCAT 52
+#define SCALE 53
+#define TRANSLATE 54
+#define ROTATE 55
+
+#define SETLINEWIDTH 60
+#define SETDASH 61
+#define SETLINECAP 62
+#define SETLINEJOIN 63
+#define SETMITERLIMIT 64
+
+#define SETGRAY 70
+#define SETRGBCOLOR 71
+#define SETCMYKCOLOR 72
+
+#define CURRENTPOINT 80
+#define IDTRANSFORM 81
+#define DTRANSFORM 82
+
+#define FINDFONT 201
+#define SCALEFONT 202
+#define SETFONT 203
+#define CURRENTFONT 204
+
+#define STRINGWIDTH 210
+
+#define DEF 999
+
+#define FSHOW 1001
+#define STEXFIG 1002
+#define ETEXFIG 1003
+#define HLW 1004
+#define VLW 1005
+#define RD 1006
+#define B 1007
+
+static struct operators
+{
+ const char *token;
+ int opcode;
+} ps_operators[] = {
+ {"add", ADD},
+ {"mul", MUL},
+ {"div", DIV},
+ {"neg", NEG},
+ {"sub", SUB},
+ {"truncate", TRUNCATE},
+
+ {"clear", CLEAR},
+ {"exch", EXCH},
+ {"pop", POP},
+
+ {"clip", CLIP},
+ {"eoclip", EOCLIP},
+ {"closepath", CLOSEPATH},
+ {"concat", CONCAT},
+
+ {"newpath", NEWPATH},
+ {"moveto", MOVETO},
+ {"rmoveto", RMOVETO},
+ {"lineto", LINETO},
+ {"rlineto", RLINETO},
+ {"curveto", CURVETO},
+ {"rcurveto", RCURVETO},
+ {"arc", ARC},
+ {"arcn", ARCN},
+
+ {"stroke", STROKE},
+ {"fill", FILL},
+ {"show", SHOW},
+ {"showpage", SHOWPAGE},
+
+ {"gsave", GSAVE},
+ {"grestore", GRESTORE},
+ {"translate", TRANSLATE},
+ {"rotate", ROTATE},
+ {"scale", SCALE},
+
+ {"setlinecap", SETLINECAP},
+ {"setlinejoin", SETLINEJOIN},
+ {"setlinewidth", SETLINEWIDTH},
+ {"setmiterlimit", SETMITERLIMIT},
+ {"setdash", SETDASH},
+
+ {"setgray", SETGRAY},
+ {"setrgbcolor", SETRGBCOLOR},
+ {"setcmykcolor", SETCMYKCOLOR},
+
+ {"currentpoint", CURRENTPOINT}, /* This is here for rotate support
+ in graphics package-not MP support */
+ {"dtransform", DTRANSFORM},
+ {"idtransform", IDTRANSFORM},
+
+ {"findfont", FINDFONT},
+ {"scalefont", SCALEFONT},
+ {"setfont", SETFONT},
+ {"currentfont", CURRENTFONT},
+
+ {"stringwidth", STRINGWIDTH},
+
+ {"def", DEF} /* not implemented yet; just work with mptopdf */
+};
+
+static struct operators mps_operators[] = {
+ {"fshow", FSHOW}, /* exch findfont exch scalefont setfont show */
+ {"startTexFig", STEXFIG},
+ {"endTexFig", ETEXFIG},
+ {"hlw", HLW}, /* 0 dtransform exch truncate exch idtransform pop setlinewidth */
+ {"vlw", VLW}, /* 0 exch dtransform truncate idtransform pop setlinewidth pop */
+ {"l", LINETO},
+ {"r", RLINETO},
+ {"c", CURVETO},
+ {"m", MOVETO},
+ {"p", CLOSEPATH},
+ {"n", NEWPATH},
+ {"C", SETCMYKCOLOR},
+ {"G", SETGRAY},
+ {"R", SETRGBCOLOR},
+ {"lj", SETLINEJOIN},
+ {"ml", SETMITERLIMIT},
+ {"lc", SETLINECAP},
+ {"S", STROKE},
+ {"F", FILL},
+ {"q", GSAVE},
+ {"Q", GRESTORE},
+ {"s", SCALE},
+ {"t", CONCAT},
+ {"sd", SETDASH},
+ {"rd", RD}, /* [] 0 setdash */
+ {"P", SHOWPAGE},
+ {"B", B}, /* gsave fill grestore */
+ {"W", CLIP}
+};
+
+#define NUM_PS_OPERATORS (sizeof(ps_operators)/sizeof(ps_operators[0]))
+#define NUM_MPS_OPERATORS (sizeof(mps_operators)/sizeof(mps_operators[0]))
+static int
+get_opcode (const char *token)
+{
+ int i;
+
+ for (i = 0; i < NUM_PS_OPERATORS; i++) {
+ if (!strcmp(token, ps_operators[i].token)) {
+ return ps_operators[i].opcode;
+ }
+ }
+
+ for (i = 0; i < NUM_MPS_OPERATORS; i++) {
+ if (!strcmp(token, mps_operators[i].token)) {
+ return mps_operators[i].opcode;
+ }
+ }
+
+ return -1;
+}
+
+#define PS_STACK_SIZE 1024
+
+static pdf_obj *stack[PS_STACK_SIZE];
+static unsigned top_stack = 0;
+
+#define POP_STACK() ((top_stack > 0) ? stack[--top_stack] : NULL)
+#define PUSH_STACK(o,e) { \
+ if (top_stack < PS_STACK_SIZE) { \
+ stack[top_stack++] = (o); \
+ } else { \
+ WARN("PS stack overflow including MetaPost file or inline PS code"); \
+ *(e) = 1; \
+ } \
+}
+
+static int
+do_exch (void)
+{
+ pdf_obj *tmp;
+
+ if (top_stack < 2)
+ return -1;
+
+ tmp = stack[top_stack-1];
+ stack[top_stack-1] = stack[top_stack-2];
+ stack[top_stack-2] = tmp;
+
+ return 0;
+}
+
+static int
+do_clear (void)
+{
+ pdf_obj *tmp;
+
+ while (top_stack > 0) {
+ tmp = POP_STACK();
+ if (tmp)
+ pdf_release_obj(tmp);
+ }
+
+ return 0;
+}
+
+/* This should be set_bottom and clear (or
+ * have independent stack) to ensure stack
+ * depth do not go below real stack bottom.
+ */
+static void
+mps_stack_clear_to (int depth)
+{
+ pdf_obj *tmp;
+
+ while (top_stack > depth) {
+ tmp = POP_STACK();
+ if (tmp)
+ pdf_release_obj(tmp);
+ }
+
+ return;
+}
+
+static int
+pop_get_numbers (double *values, int count)
+{
+ pdf_obj *tmp;
+
+ while (count-- > 0) {
+ tmp = POP_STACK();
+ if (!tmp) {
+ WARN("mpost: Stack underflow.");
+ break;
+ } else if (!PDF_OBJ_NUMBERTYPE(tmp)) {
+ WARN("mpost: Not a number!");
+ pdf_release_obj(tmp);
+ break;
+ }
+ values[count] = pdf_number_value(tmp);
+ pdf_release_obj(tmp);
+ }
+
+ return (count + 1);
+}
+
+static int
+cvr_array (pdf_obj *array, double *values, int count)
+{
+ if (!PDF_OBJ_ARRAYTYPE(array)) {
+ WARN("mpost: Not an array!");
+ } else {
+ pdf_obj *tmp;
+
+ while (count-- > 0) {
+ tmp = pdf_get_array(array, count);
+ if (!PDF_OBJ_NUMBERTYPE(tmp)) {
+ WARN("mpost: Not a number!");
+ break;
+ }
+ values[count] = pdf_number_value(tmp);
+ }
+ }
+ if (array)
+ pdf_release_obj(array);
+
+ return (count + 1);
+}
+
+static int
+is_fontdict (pdf_obj *dict)
+{
+ pdf_obj *tmp;
+
+ if (!PDF_OBJ_DICTTYPE(dict))
+ return 0;
+
+ tmp = pdf_lookup_dict(dict, "Type");
+ if (!tmp || !PDF_OBJ_NAMETYPE(tmp) ||
+ strcmp(pdf_name_value(tmp), "Font")) {
+ return 0;
+ }
+
+ tmp = pdf_lookup_dict(dict, "FontName");
+ if (!tmp || !PDF_OBJ_NAMETYPE(tmp)) {
+ return 0;
+ }
+
+ tmp = pdf_lookup_dict(dict, "FontScale");
+ if (!tmp || !PDF_OBJ_NUMBERTYPE(tmp)) {
+ return 0;
+ }
+
+ return 1;
+}
+
+static int
+do_findfont (void)
+{
+ int error = 0;
+ pdf_obj *font_dict, *font_name;
+
+ font_name = POP_STACK();
+ if (!font_name)
+ return 1;
+ else if (PDF_OBJ_STRINGTYPE(font_name) ||
+ PDF_OBJ_NAMETYPE(font_name)) {
+ /* Do not check the existence...
+ * The reason for this is that we cannot locate PK font without
+ * font scale.
+ */
+ font_dict = pdf_new_dict();
+ pdf_add_dict(font_dict,
+ pdf_new_name("Type"), pdf_new_name("Font"));
+ if (PDF_OBJ_STRINGTYPE(font_name)) {
+ pdf_add_dict(font_dict,
+ pdf_new_name("FontName"),
+ pdf_new_name(pdf_string_value(font_name)));
+ pdf_release_obj(font_name);
+ } else {
+ pdf_add_dict(font_dict,
+ pdf_new_name("FontName"), font_name);
+ }
+ pdf_add_dict(font_dict,
+ pdf_new_name("FontScale"), pdf_new_number(1.0));
+
+ if (top_stack < PS_STACK_SIZE) {
+ stack[top_stack++] = font_dict;
+ } else {
+ WARN("PS stack overflow including MetaPost file or inline PS code");
+ pdf_release_obj(font_dict);
+ error = 1;
+ }
+ } else {
+ error = 1;
+ }
+
+ return error;
+}
+
+static int
+do_scalefont (void)
+{
+ int error = 0;
+ pdf_obj *font_dict;
+ pdf_obj *font_scale;
+ double scale;
+
+ error = pop_get_numbers(&scale, 1);
+ if (error)
+ return error;
+
+ font_dict = POP_STACK();
+ if (!font_dict)
+ error = 1;
+ else if (is_fontdict(font_dict)) {
+ font_scale = pdf_lookup_dict(font_dict, "FontScale");
+ pdf_set_number(font_scale, pdf_number_value(font_scale)*scale);
+ if (top_stack < PS_STACK_SIZE) {
+ stack[top_stack++] = font_dict;
+ } else {
+ WARN("PS stack overflow including MetaPost file or inline PS code");
+ pdf_release_obj(font_dict);
+ error = 1;
+ }
+ } else {
+ error = 1;
+ }
+
+ return error;
+}
+
+static int
+do_setfont (void)
+{
+ int error = 0;
+ char *font_name;
+ double font_scale;
+ pdf_obj *font_dict;
+
+ font_dict = POP_STACK();
+ if (!is_fontdict(font_dict))
+ error = 1;
+ else {
+ /* Subfont support prevent us from managing
+ * font in a single place...
+ */
+ font_name = pdf_name_value (pdf_lookup_dict(font_dict, "FontName"));
+ font_scale = pdf_number_value(pdf_lookup_dict(font_dict, "FontScale"));
+
+ error = mp_setfont(font_name, font_scale);
+ }
+ pdf_release_obj(font_dict);
+
+ return error;
+}
+
+/* Push dummy font dict onto PS stack */
+static int
+do_currentfont (void)
+{
+ int error = 0;
+ struct mp_font *font;
+ pdf_obj *font_dict;
+
+ font = CURRENT_FONT();
+ if (!font) {
+ WARN("Currentfont undefined...");
+ return 1;
+ } else {
+ font_dict = pdf_new_dict();
+ pdf_add_dict(font_dict,
+ pdf_new_name("Type"),
+ pdf_new_name("Font"));
+ pdf_add_dict(font_dict,
+ pdf_new_name("FontName"),
+ pdf_new_name(font->font_name));
+ pdf_add_dict(font_dict,
+ pdf_new_name("FontScale"),
+ pdf_new_number(font->pt_size));
+ if (top_stack < PS_STACK_SIZE) {
+ stack[top_stack++] = font_dict;
+ } else {
+ WARN("PS stack overflow...");
+ pdf_release_obj(font_dict);
+ error = 1;
+ }
+ }
+
+ return error;
+}
+
+static int
+do_show (void)
+{
+ struct mp_font *font;
+ pdf_coord cp;
+ pdf_obj *text_str;
+ int length;
+ unsigned char *strptr;
+ double text_width;
+
+ font = CURRENT_FONT();
+ if (!font) {
+ WARN("Currentfont not set."); /* Should not be error... */
+ return 1;
+ }
+
+ pdf_dev_currentpoint(&cp);
+
+ text_str = POP_STACK();
+ if (!PDF_OBJ_STRINGTYPE(text_str)) {
+ if (text_str)
+ pdf_release_obj(text_str);
+ return 1;
+ }
+ if (font->font_id < 0) {
+ WARN("mpost: not set."); /* Should not be error... */
+ pdf_release_obj(text_str);
+ return 1;
+ }
+
+ strptr = pdf_string_value (text_str);
+ length = pdf_string_length(text_str);
+
+ if (font->tfm_id < 0) {
+ WARN("mpost: TFM not found for \"%s\".", font->font_name);
+ WARN("mpost: Text width not calculated...");
+ }
+
+ text_width = 0.0;
+ if (font->subfont_id >= 0) {
+ unsigned short uch;
+ unsigned char *ustr;
+ int i;
+
+ ustr = NEW(length * 2, unsigned char);
+ for (i = 0; i < length; i++) {
+ uch = lookup_sfd_record(font->subfont_id, strptr[i]);
+ ustr[2*i ] = uch >> 8;
+ ustr[2*i+1] = uch & 0xff;
+ if (font->tfm_id >= 0) {
+ text_width += tfm_get_width(font->tfm_id, strptr[i]);
+ }
+ }
+ text_width *= font->pt_size;
+
+ pdf_dev_set_string((spt_t)(cp.x * dev_unit_dviunit()),
+ (spt_t)(cp.y * dev_unit_dviunit()),
+ ustr, length * 2,
+ (spt_t)(text_width*dev_unit_dviunit()),
+ font->font_id, 0);
+ RELEASE(ustr);
+ } else {
+#define FWBASE ((double) (1<<20))
+ if (font->tfm_id >= 0) {
+ text_width = (double) tfm_string_width(font->tfm_id, strptr, length)/FWBASE;
+ text_width *= font->pt_size;
+ }
+ pdf_dev_set_string((spt_t)(cp.x * dev_unit_dviunit()),
+ (spt_t)(cp.y * dev_unit_dviunit()),
+ strptr, length,
+ (spt_t)(text_width*dev_unit_dviunit()),
+ font->font_id, 0);
+ }
+
+ if (pdf_dev_get_font_wmode(font->font_id)) {
+ pdf_dev_rmoveto(0.0, -text_width);
+ } else {
+ pdf_dev_rmoveto(text_width, 0.0);
+ }
+
+ graphics_mode();
+ pdf_release_obj(text_str);
+
+ return 0;
+}
+
+static int
+do_mpost_bind_def (const char *ps_code, double x_user, double y_user)
+{
+ int error = 0;
+ const char *start, *end;
+
+ start = ps_code;
+ end = start + strlen(start);
+
+ error = mp_parse_body(&start, end, x_user, y_user);
+
+ return error;
+}
+
+static int
+do_texfig_operator (int opcode, double x_user, double y_user)
+{
+ static transform_info fig_p;
+ static int in_tfig = 0;
+ static int xobj_id = -1;
+ static int count = 0;
+ double values[6];
+ int error = 0;
+
+ switch (opcode) {
+ case STEXFIG:
+ error = pop_get_numbers(values, 6);
+ if (!error) {
+ double dvi2pts;
+ char resname[256];
+
+ transform_info_clear(&fig_p);
+ dvi2pts = 1.0/dev_unit_dviunit();
+
+ fig_p.width = values[0] * dvi2pts;
+ fig_p.height = values[1] * dvi2pts;
+ fig_p.bbox.llx = values[2] * dvi2pts;
+ fig_p.bbox.lly = -values[3] * dvi2pts;
+ fig_p.bbox.urx = values[4] * dvi2pts;
+ fig_p.bbox.ury = -values[5] * dvi2pts;
+ fig_p.flags |= INFO_HAS_USER_BBOX;
+
+ sprintf(resname, "__tf%d__", count);
+ xobj_id = pdf_doc_begin_grabbing(resname,
+ fig_p.bbox.llx, fig_p.bbox.ury, &fig_p.bbox);
+
+ in_tfig = 1;
+ count++;
+ }
+ break;
+ case ETEXFIG:
+ if (!in_tfig)
+ ERROR("endTexFig without valid startTexFig!.");
+
+ pdf_doc_end_grabbing(NULL);
+ pdf_dev_put_image(xobj_id, &fig_p, x_user, y_user);
+ in_tfig = 0;
+ break;
+ default:
+ error = 1;
+ }
+
+ return error;
+}
+
+/*
+ * buggy...
+ */
+
+/*
+ * CTM(Current Transformation Matrix) means the transformation of User Space
+ * to Device Space coordinates. Because DVIPDFMx does not know the resolution
+ * of Device Space, we assume that the resolution is 1/1000.
+ */
+#define DEVICE_RESOLUTION 1000
+static int
+ps_dev_CTM (pdf_tmatrix *M)
+{
+ pdf_dev_currentmatrix(M);
+ M->a *= DEVICE_RESOLUTION; M->b *= DEVICE_RESOLUTION;
+ M->c *= DEVICE_RESOLUTION; M->d *= DEVICE_RESOLUTION;
+ M->e *= DEVICE_RESOLUTION; M->f *= DEVICE_RESOLUTION;
+
+ return 0;
+}
+
+/*
+ * Again, the only piece that needs x_user and y_user is
+ * that piece dealing with texfig.
+ */
+static int
+do_operator (const char *token, double x_user, double y_user)
+{
+ int error = 0;
+ int opcode = 0;
+ double values[12];
+ pdf_obj *tmp = NULL;
+ pdf_tmatrix matrix;
+ pdf_coord cp;
+ pdf_color color;
+
+#define PUSH(o) { \
+ if (top_stack < PS_STACK_SIZE) { \
+ stack[top_stack++] = (o); \
+ } else { \
+ WARN("PS stack overflow including MetaPost file or inline PS code"); \
+ error=1; \
+ break;\
+ } \
+}
+
+ opcode = get_opcode(token);
+
+ switch (opcode) {
+
+ /*
+ * Arithmetic operators
+ */
+ case ADD:
+ error = pop_get_numbers(values, 2);
+ if (!error)
+ PUSH(pdf_new_number(values[0] + values[1]));
+ break;
+ case MUL:
+ error = pop_get_numbers(values, 2);
+ if (!error)
+ PUSH(pdf_new_number(values[0]*values[1]));
+ break;
+ case NEG:
+ error = pop_get_numbers(values, 1);
+ if (!error)
+ PUSH(pdf_new_number(-values[0]));
+ break;
+ case SUB:
+ error = pop_get_numbers(values, 2);
+ if (!error)
+ PUSH(pdf_new_number(values[0] - values[1]));
+ break;
+ case DIV:
+ error = pop_get_numbers(values, 2);
+ if (!error)
+ PUSH(pdf_new_number(values[0]/values[1]));
+ break;
+ case TRUNCATE: /* Round toward zero. */
+ error = pop_get_numbers(values, 1);
+ if (!error)
+ PUSH(pdf_new_number(((values[0] > 0) ? floor(values[0]) : ceil(values[0]))));
+ break;
+
+ /* Stack operation */
+ case CLEAR:
+ error = do_clear();
+ break;
+ case POP:
+ tmp = POP_STACK();
+ if (tmp)
+ pdf_release_obj(tmp);
+ break;
+ case EXCH:
+ error = do_exch();
+ break;
+
+ /* Path construction */
+ case MOVETO:
+ error = pop_get_numbers(values, 2);
+ if (!error)
+ error = pdf_dev_moveto(values[0], values[1]);
+ break;
+ case RMOVETO:
+ error = pop_get_numbers(values, 2);
+ if (!error)
+ error = pdf_dev_rmoveto(values[0], values[1]);
+ break;
+ case LINETO:
+ error = pop_get_numbers(values, 2);
+ if (!error)
+ error = pdf_dev_lineto(values[0], values[1]);
+ break;
+ case RLINETO:
+ error = pop_get_numbers(values, 2);
+ if (!error)
+ error = pdf_dev_rlineto(values[0], values[1]);
+ break;
+ case CURVETO:
+ error = pop_get_numbers(values, 6);
+ if (!error)
+ error = pdf_dev_curveto(values[0], values[1],
+ values[2], values[3],
+ values[4], values[5]);
+ break;
+ case RCURVETO:
+ error = pop_get_numbers(values, 6);
+ if (!error)
+ error = pdf_dev_rcurveto(values[0], values[1],
+ values[2], values[3],
+ values[4], values[5]);
+ break;
+ case CLOSEPATH:
+ error = pdf_dev_closepath();
+ break;
+ case ARC:
+ error = pop_get_numbers(values, 5);
+ if (!error)
+ error = pdf_dev_arc(values[0], values[1],
+ values[2], /* rad */
+ values[3], values[4]);
+ break;
+ case ARCN:
+ error = pop_get_numbers(values, 5);
+ if (!error)
+ error = pdf_dev_arcn(values[0], values[1],
+ values[2], /* rad */
+ values[3], values[4]);
+ break;
+
+ case NEWPATH:
+ pdf_dev_newpath();
+ break;
+ case STROKE:
+ /* fill rule not supported yet */
+ pdf_dev_flushpath('S', PDF_FILL_RULE_NONZERO);
+ break;
+ case FILL:
+ pdf_dev_flushpath('f', PDF_FILL_RULE_NONZERO);
+ break;
+
+ case CLIP:
+ error = pdf_dev_clip();
+ break;
+ case EOCLIP:
+ error = pdf_dev_eoclip();
+ break;
+
+ /* Graphics state operators: */
+ case GSAVE:
+ error = pdf_dev_gsave();
+ save_font();
+ break;
+ case GRESTORE:
+ error = pdf_dev_grestore();
+ restore_font();
+ break;
+
+ case CONCAT:
+ tmp = POP_STACK();
+ error = cvr_array(tmp, values, 6); /* This does pdf_release_obj() */
+ tmp = NULL;
+ if (error)
+ WARN("Missing array before \"concat\".");
+ else {
+ pdf_setmatrix(&matrix,
+ values[0], values[1],
+ values[2], values[3],
+ values[4], values[5]);
+ error = pdf_dev_concat(&matrix);
+ }
+ break;
+ case SCALE:
+ error = pop_get_numbers(values, 2);
+ if (!error) {
+ switch (mp_cmode) {
+#ifndef WITHOUT_ASCII_PTEX
+ case MP_CMODE_PTEXVERT:
+ pdf_setmatrix(&matrix,
+ values[1], 0.0,
+ 0.0 , values[0],
+ 0.0 , 0.0);
+ break;
+#endif /* !WITHOUT_ASCII_PTEX */
+ default:
+ pdf_setmatrix(&matrix,
+ values[0], 0.0,
+ 0.0 , values[1],
+ 0.0 , 0.0);
+ break;
+ }
+
+ error = pdf_dev_concat(&matrix);
+ }
+ break;
+ /* Positive angle means clock-wise direction in graphicx-dvips??? */
+ case ROTATE:
+ error = pop_get_numbers(values, 1);
+ if (!error) {
+ values[0] = values[0] * M_PI / 180;
+
+ switch (mp_cmode) {
+ case MP_CMODE_DVIPSK:
+ case MP_CMODE_MPOST: /* Really? */
+#ifndef WITHOUT_ASCII_PTEX
+ case MP_CMODE_PTEXVERT:
+#endif /* !WITHOUT_ASCII_PTEX */
+ pdf_setmatrix(&matrix,
+ cos(values[0]), -sin(values[0]),
+ sin(values[0]), cos(values[0]),
+ 0.0, 0.0);
+ break;
+ default:
+ pdf_setmatrix(&matrix,
+ cos(values[0]) , sin(values[0]),
+ -sin(values[0]), cos(values[0]),
+ 0.0, 0.0);
+ break;
+ }
+ error = pdf_dev_concat(&matrix);
+ }
+ break;
+ case TRANSLATE:
+ error = pop_get_numbers(values, 2);
+ if (!error) {
+ pdf_setmatrix(&matrix,
+ 1.0, 0.0,
+ 0.0, 1.0,
+ values[0], values[1]);
+ error = pdf_dev_concat(&matrix);
+ }
+ break;
+
+ case SETDASH:
+ error = pop_get_numbers(values, 1);
+ if (!error) {
+ pdf_obj *pattern, *dash;
+ int i, num_dashes;
+ double dash_values[PDF_DASH_SIZE_MAX];
+ double offset;
+
+ offset = values[0];
+ pattern = POP_STACK();
+ if (!PDF_OBJ_ARRAYTYPE(pattern)) {
+ if (pattern)
+ pdf_release_obj(pattern);
+ error = 1;
+ break;
+ }
+ num_dashes = pdf_array_length(pattern);
+ if (num_dashes > PDF_DASH_SIZE_MAX) {
+ WARN("Too many dashes...");
+ pdf_release_obj(pattern);
+ error = 1;
+ break;
+ }
+ for (i = 0;
+ i < num_dashes && !error ; i++) {
+ dash = pdf_get_array(pattern, i);
+ if (!PDF_OBJ_NUMBERTYPE(dash))
+ error = 1;
+ else {
+ dash_values[i] = pdf_number_value(dash);
+ }
+ }
+ pdf_release_obj(pattern);
+ if (!error) {
+ error = pdf_dev_setdash(num_dashes, dash_values, offset);
+ }
+ }
+ break;
+ case SETLINECAP:
+ error = pop_get_numbers(values, 1);
+ if (!error)
+ error = pdf_dev_setlinecap((int)values[0]);
+ break;
+ case SETLINEJOIN:
+ error = pop_get_numbers(values, 1);
+ if (!error)
+ error = pdf_dev_setlinejoin((int)values[0]);
+ break;
+ case SETLINEWIDTH:
+ error = pop_get_numbers(values, 1);
+ if (!error)
+ error = pdf_dev_setlinewidth(values[0]);
+ break;
+ case SETMITERLIMIT:
+ error = pop_get_numbers(values, 1);
+ if (!error)
+ error = pdf_dev_setmiterlimit(values[0]);
+ break;
+
+ case SETCMYKCOLOR:
+ error = pop_get_numbers(values, 4);
+ /* Not handled properly */
+ if (!error) {
+ pdf_color_cmykcolor(&color,
+ values[0], values[1],
+ values[2], values[3]);
+#ifdef XETEX
+ pdf_dev_set_color(&color);
+#else
+ pdf_dev_set_strokingcolor(&color);
+ pdf_dev_set_nonstrokingcolor(&color);
+#endif
+ }
+ break;
+ case SETGRAY:
+ /* Not handled properly */
+ error = pop_get_numbers(values, 1);
+ if (!error) {
+ pdf_color_graycolor(&color, values[0]);
+#ifdef XETEX
+ pdf_dev_set_color(&color);
+#else
+ pdf_dev_set_strokingcolor(&color);
+ pdf_dev_set_nonstrokingcolor(&color);
+#endif
+ }
+ break;
+ case SETRGBCOLOR:
+ error = pop_get_numbers(values, 3);
+ if (!error) {
+ pdf_color_rgbcolor(&color,
+ values[0], values[1], values[2]);
+#ifdef XETEX
+ pdf_dev_set_color(&color);
+#else
+ pdf_dev_set_strokingcolor(&color);
+ pdf_dev_set_nonstrokingcolor(&color);
+#endif
+ }
+ break;
+
+ case SHOWPAGE: /* Let's ignore this for now */
+ break;
+
+ case CURRENTPOINT:
+ error = pdf_dev_currentpoint(&cp);
+ if (!error) {
+ PUSH(pdf_new_number(cp.x));
+ PUSH(pdf_new_number(cp.y));
+ }
+ break;
+
+ case DTRANSFORM:
+ {
+ int has_matrix = 0;
+
+ tmp = POP_STACK();
+ if (PDF_OBJ_ARRAYTYPE(tmp)) {
+ error = cvr_array(tmp, values, 6); /* This does pdf_release_obj() */
+ tmp = NULL;
+ if (error)
+ break;
+ pdf_setmatrix(&matrix,
+ values[0], values[1],
+ values[2], values[3],
+ values[4], values[5]);
+ tmp = POP_STACK();
+ has_matrix = 1;
+ }
+
+ if (!PDF_OBJ_NUMBERTYPE(tmp)) {
+ error = 1;
+ break;
+ }
+ cp.y = pdf_number_value(tmp);
+ pdf_release_obj(tmp);
+
+ tmp = POP_STACK();
+ if (!PDF_OBJ_NUMBERTYPE(tmp)) {
+ error = 1;
+ break;
+ }
+ cp.x = pdf_number_value(tmp);
+ pdf_release_obj(tmp);
+
+ if (!has_matrix) {
+ ps_dev_CTM(&matrix); /* Here, we need real PostScript CTM */
+ }
+ pdf_dev_dtransform(&cp, &matrix);
+ PUSH(pdf_new_number(cp.x));
+ PUSH(pdf_new_number(cp.y));
+ }
+ break;
+
+ case IDTRANSFORM:
+ {
+ int has_matrix = 0;
+
+ tmp = POP_STACK();
+ if (PDF_OBJ_ARRAYTYPE(tmp)) {
+ error = cvr_array(tmp, values, 6); /* This does pdf_release_obj() */
+ tmp = NULL;
+ if (error)
+ break;
+ pdf_setmatrix(&matrix,
+ values[0], values[1],
+ values[2], values[3],
+ values[4], values[5]);
+ tmp = POP_STACK();
+ has_matrix = 1;
+ }
+
+ if (!PDF_OBJ_NUMBERTYPE(tmp)) {
+ error = 1;
+ break;
+ }
+ cp.y = pdf_number_value(tmp);
+ pdf_release_obj(tmp);
+
+ tmp = POP_STACK();
+ if (!PDF_OBJ_NUMBERTYPE(tmp)) {
+ error = 1;
+ break;
+ }
+ cp.x = pdf_number_value(tmp);
+ pdf_release_obj(tmp);
+
+ if (!has_matrix) {
+ ps_dev_CTM(&matrix); /* Here, we need real PostScript CTM */
+ }
+ pdf_dev_idtransform(&cp, &matrix);
+ PUSH(pdf_new_number(cp.x));
+ PUSH(pdf_new_number(cp.y));
+ break;
+ }
+
+ case FINDFONT:
+ error = do_findfont();
+ break;
+ case SCALEFONT:
+ error = do_scalefont();
+ break;
+ case SETFONT:
+ error = do_setfont();
+ break;
+ case CURRENTFONT:
+ error = do_currentfont();
+ break;
+
+ case SHOW:
+ error = do_show();
+ break;
+
+ case STRINGWIDTH:
+ error = 1;
+ break;
+
+ /* Extensions */
+ case FSHOW:
+ error = do_mpost_bind_def("exch findfont exch scalefont setfont show", x_user, y_user);
+ break;
+ case STEXFIG:
+ case ETEXFIG:
+ error = do_texfig_operator(opcode, x_user, y_user);
+ break;
+ case HLW:
+ error = do_mpost_bind_def("0 dtransform exch truncate exch idtransform pop setlinewidth", x_user, y_user);
+ break;
+ case VLW:
+ error = do_mpost_bind_def("0 exch dtransform truncate idtransform setlinewidth pop", x_user, y_user);
+ break;
+ case RD:
+ error = do_mpost_bind_def("[] 0 setdash", x_user, y_user);
+ break;
+ case B:
+ error = do_mpost_bind_def("gsave fill grestore", x_user, y_user);
+ break;
+
+ case DEF:
+ tmp = POP_STACK();
+ tmp = POP_STACK();
+ /* do nothing; not implemented yet */
+ break;
+
+ default:
+ if (is_fontname(token)) {
+ PUSH(pdf_new_name(token));
+ } else {
+ WARN("Unknown token \"%s\"", token);
+ error = 1;
+ }
+ break;
+ }
+
+ return error;
+}
+
+/*
+ * The only sections that need to know x_user and y _user are those
+ * dealing with texfig.
+ */
+static int
+mp_parse_body (const char **start, const char *end, double x_user, double y_user)
+{
+ char *token;
+ pdf_obj *obj;
+ int error = 0;
+
+ skip_white(start, end);
+ while (*start < end && !error) {
+ if (isdigit(**start) ||
+ (*start < end - 1 &&
+ (**start == '+' || **start == '-' || **start == '.' ))) {
+ double value;
+ char *next;
+
+ value = strtod(*start, &next);
+ if (next < end && !strchr("<([{/%", *next) && !isspace(*next)) {
+ WARN("Unkown PostScript operator.");
+ dump(*start, next);
+ error = 1;
+ } else {
+ PUSH(pdf_new_number(value));
+ *start = next;
+ }
+ /*
+ * PDF parser can't handle PS operator inside arrays.
+ * This shouldn't use parse_pdf_array().
+ */
+ } else if (**start == '[' &&
+ (obj = parse_pdf_array(start, end, NULL))) {
+ PUSH(obj);
+ /* This cannot handle ASCII85 string. */
+ } else if (*start < end - 1 &&
+ (**start == '<' && *(*start+1) == '<') &&
+ (obj = parse_pdf_dict(start, end, NULL))) {
+ PUSH(obj);
+ } else if ((**start == '(' || **start == '<') &&
+ (obj = parse_pdf_string (start, end))) {
+ PUSH(obj);
+ } else if (**start == '/' &&
+ (obj = parse_pdf_name(start, end))) {
+ PUSH(obj);
+ } else {
+ token = parse_ident(start, end);
+ if (!token)
+ error = 1;
+ else {
+ error = do_operator(token, x_user, y_user);
+ RELEASE(token);
+ }
+ }
+ skip_white(start, end);
+ }
+
+ return error;
+}
+
+void
+mps_eop_cleanup (void)
+{
+ clear_fonts();
+ do_clear();
+}
+
+int
+mps_stack_depth (void)
+{
+ return top_stack;
+}
+
+int
+mps_exec_inline (const char **p, const char *endptr,
+ double x_user, double y_user)
+{
+ int error;
+ int dirmode, autorotate;
+
+ /* Compatibility for dvipsk. */
+ dirmode = pdf_dev_get_dirmode();
+ if (dirmode) {
+ mp_cmode = MP_CMODE_PTEXVERT;
+ } else {
+ mp_cmode = MP_CMODE_DVIPSK;
+ }
+
+ autorotate = pdf_dev_get_param(PDF_DEV_PARAM_AUTOROTATE);
+ pdf_dev_set_param(PDF_DEV_PARAM_AUTOROTATE, 0);
+ //pdf_color_push(); /* ... */
+
+ /* Comment in dvipdfm:
+ * Remember that x_user and y_user are off by 0.02 %
+ */
+ pdf_dev_moveto(x_user, y_user);
+ error = mp_parse_body(p, endptr, x_user, y_user);
+
+ //pdf_color_pop(); /* ... */
+ pdf_dev_set_param(PDF_DEV_PARAM_AUTOROTATE, autorotate);
+ pdf_dev_set_dirmode(dirmode);
+
+ return error;
+}
+
+/* mp inclusion is a bit of a hack. The routine
+ * starts a form at the lower left corner of
+ * the page and then calls begin_form_xobj telling
+ * it to record the image drawn there and bundle it
+ * up in an xojbect. This allows us to use the coordinates
+ * in the MP file directly. This appears to be the
+ * easiest way to be able to use the pdf_dev_set_string()
+ * command (with its scaled and extended fonts) without
+ * getting all confused about the coordinate system.
+ * After the xobject is created, the whole thing can
+ * be scaled any way the user wants
+ */
+
+/* Should implement save and restore. */
+int
+mps_include_page (const char *ident, FILE *fp)
+{
+ int form_id;
+ xform_info info;
+ int st_depth, gs_depth;
+ char *buffer;
+ const char *p, *endptr;
+ long length, nb_read;
+ int dirmode, autorotate, error;
+
+ rewind(fp);
+
+ length = file_size(fp);
+ if (length < 1) {
+ WARN("Can't read any byte in the MPS file.");
+ return -1;
+ }
+
+ buffer = NEW(length + 1, char);
+ buffer[length] = '\0';
+ p = buffer;
+ endptr = p + length;
+
+ while (length > 0) {
+ nb_read = fread(buffer, sizeof(char), length, fp);
+ if (nb_read < 0) {
+ RELEASE(buffer);
+ WARN("Reading file failed...");
+ return -1;
+ }
+ length -= nb_read;
+ }
+
+ error = mps_scan_bbox(&p, endptr, &(info.bbox));
+ if (error) {
+ WARN("Error occured while scanning MetaPost file headers: Could not find BoundingBox.");
+ RELEASE(buffer);
+ return -1;
+ }
+ skip_prolog(&p, endptr);
+
+ dirmode = pdf_dev_get_dirmode();
+ autorotate = pdf_dev_get_param(PDF_DEV_PARAM_AUTOROTATE);
+ pdf_dev_set_param(PDF_DEV_PARAM_AUTOROTATE, 0);
+ //pdf_color_push();
+
+ form_id = pdf_doc_begin_grabbing(ident, 0.0, 0.0, &(info.bbox));
+
+ mp_cmode = MP_CMODE_MPOST;
+ gs_depth = pdf_dev_current_depth();
+ st_depth = mps_stack_depth();
+ /* At this point the gstate must be initialized, since it starts a new
+ * XObject. Note that it increase gs_depth by 1. */
+ pdf_dev_push_gstate();
+
+ error = mp_parse_body(&p, endptr, 0.0, 0.0);
+ RELEASE(buffer);
+
+ if (error) {
+ WARN("Errors occured while interpreting MPS file.");
+ /* WARN("Leaving garbage in output PDF file."); */
+ form_id = -1;
+ }
+
+ /* It's time to pop the new gstate above. */
+ pdf_dev_pop_gstate();
+ mps_stack_clear_to (st_depth);
+ pdf_dev_grestore_to(gs_depth);
+
+ pdf_doc_end_grabbing(NULL);
+
+ //pdf_color_pop();
+ pdf_dev_set_param(PDF_DEV_PARAM_AUTOROTATE, autorotate);
+ pdf_dev_set_dirmode(dirmode);
+
+ return form_id;
+}
+
+int
+mps_do_page (FILE *image_file)
+{
+ int error = 0;
+ pdf_rect bbox;
+ char *buffer;
+ const char *start, *end;
+ long size;
+ int dir_mode;
+
+ rewind(image_file);
+ if ((size = file_size(image_file)) == 0) {
+ WARN("Can't read any byte in the MPS file.");
+ return -1;
+ }
+
+ buffer = NEW(size+1, char);
+ fread(buffer, sizeof(char), size, image_file);
+ buffer[size] = 0;
+ start = buffer;
+ end = buffer + size;
+
+ error = mps_scan_bbox(&start, end, &bbox);
+ if (error) {
+ WARN("Error occured while scanning MetaPost file headers: Could not find BoundingBox.");
+ RELEASE(buffer);
+ return -1;
+ }
+
+ mp_cmode = MP_CMODE_MPOST;
+
+ pdf_doc_begin_page (1.0, 0.0, 0.0); /* scale, xorig, yorig */
+ pdf_doc_set_mediabox(pdf_doc_current_page_number(), &bbox);
+
+ dir_mode = pdf_dev_get_dirmode();
+ pdf_dev_set_autorotate(0);
+
+ skip_prolog(&start, end);
+
+ error = mp_parse_body(&start, end, 0.0, 0.0);
+
+ if (error) {
+ WARN("Errors occured while interpreting MetaPost file.");
+ }
+
+ pdf_dev_set_autorotate(1);
+ pdf_dev_set_dirmode(dir_mode);
+
+ pdf_doc_end_page();
+
+ RELEASE(buffer);
+
+ /*
+ * The reason why we don't return XObject itself is
+ * PDF inclusion may not be made so.
+ */
+ return (error ? -1 : 0);
+}
+
+int
+check_for_mp (FILE *image_file)
+{
+ int try_count = 10;
+
+ rewind (image_file);
+ mfgets(work_buffer, WORK_BUFFER_SIZE, image_file);
+ if (strncmp(work_buffer, "%!PS", 4))
+ return 0;
+
+ while (try_count > 0) {
+ mfgets(work_buffer, WORK_BUFFER_SIZE, image_file);
+ if (!strncmp(work_buffer, "%%Creator:", 10)) {
+ if (strlen(work_buffer+10) >= 8 &&
+ strstr(work_buffer+10, "MetaPost"))
+ break;
+ }
+ try_count--;
+ }
+
+ return ((try_count > 0) ? 1 : 0);
+}