File: pdftables.w

package info (click to toggle)
texlive-bin 2018.20181218.49446-1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 186,920 kB
  • sloc: ansic: 873,264; cpp: 311,278; perl: 82,918; sh: 23,243; makefile: 8,590; lex: 4,939; python: 4,462; pascal: 3,813; java: 3,569; yacc: 2,901; tcl: 2,379; exp: 2,031; xml: 844; ruby: 678; lisp: 398; sed: 331; asm: 140; csh: 46; awk: 30
file content (278 lines) | stat: -rw-r--r-- 8,061 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
% pdftables.w
%
% Copyright 2009-2010 Taco Hoekwater <taco@@luatex.org>
%
% This file is part of LuaTeX.
%
% LuaTeX 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.
%
% LuaTeX 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 Lesser General Public
% License for more details.
%
% You should have received a copy of the GNU General Public License along
% with LuaTeX; if not, see <http://www.gnu.org/licenses/>.

@ @c

#include "ptexlib.h"

@ @c
const char *pdf_obj_typenames[PDF_OBJ_TYPE_MAX + 1] = {
    "font", "outline", "dest", "obj", "xform", "ximage", "thread",
    "pagestream", "page", "pages", "catalog", "info", "link", "annot", "annots",
    "bead", "beads", "objstm", "others"
};

int pdf_last_annot;
int pdf_last_link;
int pdf_last_obj;
int pdf_retval;                 /* global multi-purpose return value */
int pdf_cur_form;               /* the form being output */

@ AVL sort entry into |avl_table[]|
@c
static int compare_info(const void *pa, const void *pb, void *param)
{
    const oentry *a = (const oentry *) pa;
    const oentry *b = (const oentry *) pb;
    (void) param;
    if (a->u_type == b->u_type) {
        if (a->u_type == union_type_int)
            return ((a->u.int0 < b->u.int0 ? -1 : (a->u.int0 > b->u.int0 ? 1 : 0)));
        else /* string type */
            return strcmp(a->u.str0, b->u.str0);
    } else if (a->u_type == union_type_int) {
        return -1;
    } else {
        return 1;
    }
}

static void avl_put_obj(PDF pdf, int t, oentry * oe)
{
    void **pp;
    if (pdf->obj_tree[t] == NULL) {
        pdf->obj_tree[t] = avl_create(compare_info, NULL, &avl_xallocator);
        if (pdf->obj_tree[t] == NULL)
            formatted_error("pdf backend","avl_create() pdf->obj_tree failed");
    }
    pp = avl_probe(pdf->obj_tree[t], oe);
    if (pp == NULL)
        formatted_error("pdf backend","avl_probe() out of memory in insertion");
}

static void avl_put_int_obj(PDF pdf, int int0, int objptr, int t)
{
    oentry *oe = xtalloc(1, oentry);
    oe->u.int0 = int0;
    oe->u_type = union_type_int;
    oe->objptr = objptr;
    avl_put_obj(pdf, t, oe);
}

static void avl_put_str_obj(PDF pdf, char *str0, int objptr, int t)
{
    oentry *oe = xtalloc(1, oentry);
    oe->u.str0 = str0;          /* no xstrdup() here */
    oe->u_type = union_type_cstring;
    oe->objptr = objptr;
    avl_put_obj(pdf, t, oe);
}

static int avl_find_int_obj(PDF pdf, int t, int i)
{
    oentry *p;
    oentry tmp;
    tmp.u.int0 = i;
    tmp.u_type = union_type_int;
    if (pdf->obj_tree[t] == NULL)
        return 0;
    p = (oentry *) avl_find(pdf->obj_tree[t], &tmp);
    if (p == NULL)
        return 0;
    return p->objptr;
}

static int avl_find_str_obj(PDF pdf, int t, char *s)
{
    oentry *p;
    oentry tmp;
    tmp.u.str0 = s;
    tmp.u_type = union_type_cstring;
    if (pdf->obj_tree[t] == NULL)
        return 0;
    p = (oentry *) avl_find(pdf->obj_tree[t], &tmp);
    if (p == NULL)
        return 0;
    return p->objptr;
}

@ Create an object with type |t| and identifier |i|

@c
int pdf_create_obj(PDF pdf, int t, int i)
{
    int a;
    char *ss = NULL;
    if (pdf->obj_ptr == sup_obj_tab_size)
        overflow("indirect objects table size", (unsigned) pdf->obj_tab_size);
    if (pdf->obj_ptr == pdf->obj_tab_size) {
        a = pdf->obj_tab_size / 5;
        if (pdf->obj_tab_size < sup_obj_tab_size - a)
            pdf->obj_tab_size = pdf->obj_tab_size + a;
        else
            pdf->obj_tab_size = sup_obj_tab_size;
        pdf->obj_tab = xreallocarray(pdf->obj_tab, obj_entry, (unsigned) pdf->obj_tab_size);
    }
    pdf->obj_ptr++;
    obj_info(pdf, pdf->obj_ptr) = i;
    obj_type(pdf, pdf->obj_ptr) = t;
    set_obj_fresh(pdf, pdf->obj_ptr);
    obj_aux(pdf, pdf->obj_ptr) = 0;
    if (i < 0) {
        ss = makecstring(-i);
        avl_put_str_obj(pdf, ss, pdf->obj_ptr, t);
    } else if (i > 0)
        avl_put_int_obj(pdf, i, pdf->obj_ptr, t);
    if (t <= HEAD_TAB_MAX) {
        obj_link(pdf, pdf->obj_ptr) = pdf->head_tab[t];
        pdf->head_tab[t] = pdf->obj_ptr;
        if ((t == obj_type_dest) && (i < 0))
            append_dest_name(pdf, makecstring(-obj_info(pdf, pdf->obj_ptr)), pdf->obj_ptr); /* why not just -i */
    }
    return pdf->obj_ptr;
}

@ @c
int find_obj(PDF pdf, int t, int i, boolean byname)
{
    char *ss = NULL;
    int ret;
    if (byname) {
        ss = makecstring(i);
        ret = avl_find_str_obj(pdf, t, ss);
        free(ss);
    } else {
        ret = avl_find_int_obj(pdf, t, i);
    }
    return ret;
}

@ The following function finds an object with identifier |i| and type |t|.
Identifier |i| is either an integer or a token list index. If no such object
exists then it will be created. This function is used mainly to find destination
for link annotations and outlines; however it is also used in |ship_out| (to
check whether a Page object already exists) so we need to declare it together
with subroutines needed in |hlist_out| and |vlist_out|.

@c
int pdf_get_obj(PDF pdf, int t, int i, boolean byname)
{
    int r;
    str_number s;
    if (byname > 0) {
        s = tokens_to_string(i);
        r = find_obj(pdf, t, s, true);
    } else {
        s = 0;
        r = find_obj(pdf, t, i, false);
    }
    if (r == 0) {
        if (byname > 0) {
            r = pdf_create_obj(pdf, t, -s);
            s = 0;
        } else {
            r = pdf_create_obj(pdf, t, i);
        }
        if (t == obj_type_dest)
            set_obj_dest_ptr(pdf, r, null);
    }
    if (s != 0)
        flush_str(s);
    return r;
}

@ object checking
@c
void check_obj_exists(PDF pdf, int objnum)
{
    if (objnum < 0 || objnum > pdf->obj_ptr)
        normal_error("pdf backend", "cannot find referenced object");
}

void check_obj_type(PDF pdf, int t, int objnum)
{
    int u;
    check_obj_exists(pdf, objnum);
    u = obj_type(pdf, objnum);
    if (t != u) {
        formatted_error("pdf backend", "referenced object has wrong type %s; should be %s",
            pdf_obj_typenames[u], pdf_obj_typenames[t]);
    }
}

@ @c
void set_rect_dimens(PDF pdf, halfword p, halfword parent_box, scaledpos cur, scaled_whd alt_rule, scaled margin)
{
    scaledpos ll, ur; /* positions relative to cur */
    scaledpos pos_ll, pos_ur, tmp;
    posstructure localpos;
    localpos.dir = pdf->posstruct->dir;
    ll.h = 0; /* pdf contains current point on page */
    if (is_running(alt_rule.dp))
        ll.v = depth(parent_box) - cur.v;
    else
        ll.v = alt_rule.dp;
    if (is_running(alt_rule.wd))
        ur.h = width(parent_box) - cur.h;
    else
        ur.h = alt_rule.wd;
    if (is_running(alt_rule.ht))
        ur.v = -height(parent_box) - cur.v;
    else
        ur.v = -alt_rule.ht;
    synch_pos_with_cur(&localpos, pdf->posstruct, ll);
    pos_ll = localpos.pos;
    synch_pos_with_cur(&localpos, pdf->posstruct, ur);
    pos_ur = localpos.pos;
    if (pos_ll.h > pos_ur.h) {
        tmp.h = pos_ll.h;
        pos_ll.h = pos_ur.h;
        pos_ur.h = tmp.h;
    }
    if (pos_ll.v > pos_ur.v) {
        tmp.v = pos_ll.v;
        pos_ll.v = pos_ur.v;
        pos_ur.v = tmp.v;
    }
    if (global_shipping_mode == SHIPPING_PAGE && matrixused()) {
        matrixtransformrect(pos_ll.h, pos_ll.v, pos_ur.h, pos_ur.v);
        pos_ll.h = getllx();
        pos_ll.v = getlly();
        pos_ur.h = geturx();
        pos_ur.v = getury();
    }
    pdf_ann_left(p) = pos_ll.h - margin;
    pdf_ann_bottom(p) = pos_ll.v - margin;
    pdf_ann_right(p) = pos_ur.h + margin;
    pdf_ann_top(p) = pos_ur.v + margin;
}

@ @c
void libpdffinish(PDF pdf)
{
    strbuf_free(pdf->fb);
    xfree(pdf->job_id_string);
    fm_free();
    t1_free();
    enc_free();
    epdf_free();
    ttf_free();
    glyph_unicode_free();
    zip_free(pdf);
}