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/*
* PostScript backend for Halibut
*/
#include <assert.h>
#include "halibut.h"
#include "paper.h"
paragraph *ps_config_filename(char *filename)
{
paragraph *p;
wchar_t *ufilename, *up;
int len;
p = mknew(paragraph);
memset(p, 0, sizeof(*p));
p->type = para_Config;
p->next = NULL;
p->fpos.filename = "<command line>";
p->fpos.line = p->fpos.col = -1;
ufilename = ufroma_dup(filename);
len = ustrlen(ufilename) + 2 + lenof(L"ps-filename");
p->keyword = mknewa(wchar_t, len);
up = p->keyword;
ustrcpy(up, L"ps-filename");
up = uadv(up);
ustrcpy(up, ufilename);
up = uadv(up);
*up = L'\0';
assert(up - p->keyword < len);
sfree(ufilename);
return p;
}
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) {
p->private_data = NULL;
if (p->type == para_Config && p->parent) {
if (!ustricmp(p->keyword, L"ps-filename")) {
sfree(filename);
filename = utoa_dup(uadv(p->keyword));
}
}
}
fp = fopen(filename, "w");
if (!fp) {
error(err_cantopenw, filename);
return;
}
fprintf(fp, "%%!PS-Adobe-1.0\n");
for (pageno = 0, page = doc->pages; page; page = page->next)
pageno++;
fprintf(fp, "%%%%Pages: %d\n", pageno);
fprintf(fp, "%%%%EndComments\n");
fprintf(fp, "%%%%BeginProlog\n");
fprintf(fp, "%%%%EndProlog\n");
fprintf(fp, "%%%%BeginSetup\n");
/*
* Re-encode and re-metric 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\n", fe->vector[i] ? fe->vector[i] : ".notdef");
fprintf(fp, "] def /Metrics 256 dict dup begin\n");
for (i = 0; i < 256; i++) {
if (fe->indices[i] >= 0) {
double width = fe->font->widths[fe->indices[i]];
fprintf(fp, "/%s %g def\n", fe->vector[i],
1000.0 * width / 4096.0);
}
}
fprintf(fp, "end def 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.
*/
pageno = 0;
for (page = doc->pages; page; page = page->next) {
text_fragment *frag;
pageno++;
fprintf(fp, "%%%%Page: %d %d\n", pageno, pageno);
fprintf(fp, "%%%%BeginPageSetup\n");
fprintf(fp, "%%%%EndPageSetup\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/4096.0, xr->ty/4096.0);
fprintf(fp, " %g %g lineto %g %g lineto",
xr->lx/4096.0, xr->by/4096.0,
xr->rx/4096.0, xr->by/4096.0);
fprintf(fp, " %g %g lineto closepath fill grestore\n",
xr->rx/4096.0, xr->ty/4096.0);
}
}
#endif
for (frag = page->first_text; frag; frag = frag->next) {
char *c;
fprintf(fp, "%s %d scalefont setfont %g %g moveto (",
frag->fe->name, frag->fontsize,
frag->x/4096.0, frag->y/4096.0);
for (c = frag->text; *c; c++) {
if (*c == '(' || *c == ')' || *c == '\\')
fputc('\\', fp);
fputc(*c, fp);
}
fprintf(fp, ") show\n");
}
fprintf(fp, "showpage\n");
}
fprintf(fp, "%%%%EOF\n");
fclose(fp);
sfree(filename);
}
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