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
|
/*
* PostScript backend for Halibut
*/
#include <assert.h>
#include "halibut.h"
#include "paper.h"
static void ps_comment(FILE *fp, char const *leader, word *words);
paragraph *ps_config_filename(char *filename)
{
return cmdline_cfg_simple("ps-filename", filename, NULL);
}
void ps_backend(paragraph *sourceform, keywordlist *keywords,
indexdata *idx, void *vdoc) {
document *doc = (document *)vdoc;
int font_index;
font_encoding *fe;
page_data *page;
int pageno;
FILE *fp;
char *filename;
paragraph *p;
IGNORE(keywords);
IGNORE(idx);
filename = dupstr("output.ps");
for (p = sourceform; p; p = p->next) {
if (p->type == para_Config) {
if (!ustricmp(p->keyword, L"ps-filename")) {
sfree(filename);
filename = dupstr(adv(p->origkeyword));
}
}
}
fp = fopen(filename, "w");
if (!fp) {
error(err_cantopenw, filename);
return;
}
fprintf(fp, "%%!PS-Adobe-3.0\n");
fprintf(fp, "%%%%Creator: Halibut, %s\n", version);
fprintf(fp, "%%%%DocumentData: Clean8Bit\n");
fprintf(fp, "%%%%LanguageLevel: 1\n");
for (pageno = 0, page = doc->pages; page; page = page->next)
pageno++;
fprintf(fp, "%%%%Pages: %d\n", pageno);
for (p = sourceform; p; p = p->next)
if (p->type == para_Title)
ps_comment(fp, "%%Title: ", p->words);
fprintf(fp, "%%%%DocumentNeededResources:\n");
for (fe = doc->fonts->head; fe; fe = fe->next)
/* XXX This may request the same font multiple times. */
fprintf(fp, "%%%%+ font %s\n", fe->font->name);
fprintf(fp, "%%%%DocumentSuppliedResources: procset Halibut 0 0\n");
fprintf(fp, "%%%%EndComments\n");
fprintf(fp, "%%%%BeginProlog\n");
fprintf(fp, "%%%%BeginResource: procset Halibut 0 0\n");
/*
* Supply a prologue function which allows a reasonably
* compressed representation of the text on the pages.
*
* Expects two arguments: a y-coordinate, and then an array.
* Elements of the array are processed sequentially as follows:
*
* - a number is treated as an x-coordinate
* - an array is treated as a (font, size) pair
* - a string is shown
*/
fprintf(fp,
"/tdict 4 dict dup begin\n"
" /arraytype {aload pop scalefont setfont} bind def\n"
" /realtype {1 index moveto} bind def\n"
" /integertype /realtype load def\n"
" /stringtype {show} bind def\n"
"end def\n"
"/t { tdict begin {dup type exec} forall end pop } bind def\n");
fprintf(fp, "%%%%EndResource\n");
fprintf(fp, "%%%%EndProlog\n");
fprintf(fp, "%%%%BeginSetup\n");
/*
* This is as good a place as any to put version IDs.
*/
for (p = sourceform; p; p = p->next)
if (p->type == para_VersionID)
ps_comment(fp, "% ", p->words);
for (fe = doc->fonts->head; fe; fe = fe->next)
/* XXX This may request the same font multiple times. */
fprintf(fp, "%%%%IncludeResource: font %s\n", fe->font->name);
/*
* Re-encode the fonts.
*/
font_index = 0;
for (fe = doc->fonts->head; fe; fe = fe->next) {
char fname[40];
int i;
sprintf(fname, "f%d", font_index++);
fe->name = dupstr(fname);
fprintf(fp, "/%s findfont dup length dict begin\n", fe->font->name);
fprintf(fp, "{1 index /FID ne {def} {pop pop} ifelse} forall\n");
fprintf(fp, "/Encoding [\n");
for (i = 0; i < 256; i++)
fprintf(fp, "/%s%c", fe->vector[i] ? fe->vector[i] : ".notdef",
i % 4 == 3 ? '\n' : ' ');
fprintf(fp, "] def\n");
fprintf(fp, "currentdict end\n");
fprintf(fp, "/fontname-%s exch definefont /%s exch def\n\n",
fe->name, fe->name);
}
fprintf(fp, "%%%%EndSetup\n");
/*
* Output the text and graphics.
*/
pageno = 0;
for (page = doc->pages; page; page = page->next) {
text_fragment *frag, *frag_end;
rect *r;
pageno++;
fprintf(fp, "%%%%Page: %d %d\n", pageno, pageno);
fprintf(fp, "save\n");
#if 0
{
xref *xr;
/*
* I used this diagnostic briefly to ensure that
* cross-reference rectangles were being put where they
* should be.
*/
for (xr = page->first_xref; xr; xr = xr->next) {
fprintf(fp, "gsave 0.7 setgray %g %g moveto",
xr->lx/FUNITS_PER_PT, xr->ty/FUNITS_PER_PT);
fprintf(fp, " %g %g lineto %g %g lineto",
xr->lx/FUNITS_PER_PT, xr->by/FUNITS_PER_PT,
xr->rx/FUNITS_PER_PT, xr->by/FUNITS_PER_PT);
fprintf(fp, " %g %g lineto closepath fill grestore\n",
xr->rx/FUNITS_PER_PT, xr->ty/FUNITS_PER_PT);
}
}
#endif
for (r = page->first_rect; r; r = r->next) {
fprintf(fp, "%g %g moveto %g 0 rlineto 0 %g rlineto "
"-%g 0 rlineto closepath fill\n",
r->x / FUNITS_PER_PT, r->y / FUNITS_PER_PT,
r->w / FUNITS_PER_PT, r->h / FUNITS_PER_PT,
r->w / FUNITS_PER_PT);
}
frag = page->first_text;
while (frag) {
font_encoding *fe;
int fs;
char *c;
/*
* Collect all the adjacent text fragments with the
* same y-coordinate.
*/
for (frag_end = frag;
frag_end && frag_end->y == frag->y;
frag_end = frag_end->next);
fprintf(fp, "%g[", frag->y / FUNITS_PER_PT);
fe = NULL;
fs = -1;
while (frag && frag != frag_end) {
if (frag->fe != fe || frag->fontsize != fs)
fprintf(fp, "[%s %d]", frag->fe->name, frag->fontsize);
fe = frag->fe;
fs = frag->fontsize;
fprintf(fp, "%g(", frag->x/FUNITS_PER_PT);
for (c = frag->text; *c; c++) {
if (*c == '(' || *c == ')' || *c == '\\')
fputc('\\', fp);
fputc(*c, fp);
}
fprintf(fp, ")");
frag = frag->next;
}
fprintf(fp, "]t\n");
}
fprintf(fp, "restore showpage\n");
}
fprintf(fp, "%%%%EOF\n");
fclose(fp);
sfree(filename);
}
static void ps_comment(FILE *fp, char const *leader, word *words)
{
fprintf(fp, "%s", leader);
for (; words; words = words->next) {
char *text;
int type;
switch (words->type) {
case word_HyperLink:
case word_HyperEnd:
case word_UpperXref:
case word_LowerXref:
case word_XrefEnd:
case word_IndexRef:
continue;
}
type = removeattr(words->type);
switch (type) {
case word_Normal:
text = utoa_dup(words->text, CS_ASCII);
break;
case word_WhiteSpace:
text = dupstr(" ");
break;
case word_Quote:
text = dupstr("'");
break;
}
fputs(text, fp);
sfree(text);
}
fprintf(fp, "\n");
}
|
