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/*
* Information tool.
* Print information about pages of a pdf.
*/
#include "mupdf/pdf.h"
static void
infousage(void)
{
fprintf(stderr,
"usage: mutool pages [options] file.pdf [pages]\n"
"\t-p -\tpassword for decryption\n"
"\tpages\tcomma separated list of page numbers and ranges\n"
);
exit(1);
}
static int
showbox(fz_context *ctx, fz_output *out, pdf_obj *page, char *text, pdf_obj *name)
{
fz_rect bbox;
pdf_obj *obj;
int failed = 0;
fz_try(ctx)
{
obj = pdf_dict_get(ctx, page, name);
if (!pdf_is_array(ctx, obj))
break;
pdf_to_rect(ctx, obj, &bbox);
fz_printf(ctx, out, "<%s l=\"%g\" b=\"%g\" r=\"%g\" t=\"%g\" />\n", text, bbox.x0, bbox.y0, bbox.x1, bbox.y1);
}
fz_catch(ctx)
{
failed = 1;
}
return failed;
}
static int
shownum(fz_context *ctx, fz_output *out, pdf_obj *page, char *text, pdf_obj *name)
{
pdf_obj *obj;
int failed = 0;
fz_try(ctx)
{
obj = pdf_dict_get(ctx, page, name);
if (!pdf_is_number(ctx, obj))
break;
fz_printf(ctx, out, "<%s v=\"%g\" />\n", text, pdf_to_real(ctx, obj));
}
fz_catch(ctx)
{
failed = 1;
}
return failed;
}
static int
showpage(fz_context *ctx, pdf_document *doc, fz_output *out, int page)
{
pdf_obj *pageobj;
pdf_obj *pageref;
int failed = 0;
fz_printf(ctx, out, "<page pagenum=\"%d\">\n", page);
fz_try(ctx)
{
pageref = pdf_lookup_page_obj(ctx, doc, page-1);
pageobj = pdf_resolve_indirect(ctx, pageref);
if (!pageobj)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot retrieve info from page %d", page);
}
fz_catch(ctx)
{
fz_printf(ctx, out, "Failed to gather information for page %d\n", page);
failed = 1;
}
if (!failed)
{
failed |= showbox(ctx, out, pageobj, "MediaBox", PDF_NAME_MediaBox);
failed |= showbox(ctx, out, pageobj, "CropBox", PDF_NAME_CropBox);
failed |= showbox(ctx, out, pageobj, "ArtBox", PDF_NAME_ArtBox);
failed |= showbox(ctx, out, pageobj, "BleedBox", PDF_NAME_BleedBox);
failed |= showbox(ctx, out, pageobj, "TrimBox", PDF_NAME_TrimBox);
failed |= shownum(ctx, out, pageobj, "Rotate", PDF_NAME_Rotate);
failed |= shownum(ctx, out, pageobj, "UserUnit", PDF_NAME_UserUnit);
}
fz_printf(ctx, out, "</page>\n");
return failed;
}
static int
showpages(fz_context *ctx, pdf_document *doc, fz_output *out, char *pagelist)
{
int page, spage, epage;
char *spec, *dash;
int pagecount;
int ret = 0;
if (!doc)
infousage();
pagecount = pdf_count_pages(ctx, doc);
spec = fz_strsep(&pagelist, ",");
while (spec && pagecount)
{
dash = strchr(spec, '-');
if (dash == spec)
spage = epage = pagecount;
else
spage = epage = atoi(spec);
if (dash)
{
if (strlen(dash) > 1)
epage = atoi(dash + 1);
else
epage = pagecount;
}
if (spage > epage)
page = spage, spage = epage, epage = page;
spage = fz_clampi(spage, 1, pagecount);
epage = fz_clampi(epage, 1, pagecount);
for (page = spage; page <= epage; page++)
{
ret |= showpage(ctx, doc, out, page);
}
spec = fz_strsep(&pagelist, ",");
}
return ret;
}
static int arg_is_page_range(const char *arg)
{
int c;
while ((c = *arg++) != 0)
{
if ((c < '0' || c > '9') && (c != '-') && (c != ','))
return 0;
}
return 1;
}
static int
pdfpages_pages(fz_context *ctx, fz_output *out, char *filename, char *password, char *argv[], int argc)
{
enum { NO_FILE_OPENED, NO_INFO_GATHERED, INFO_SHOWN } state;
int argidx = 0;
pdf_document *doc = NULL;
int ret = 0;
state = NO_FILE_OPENED;
while (argidx < argc)
{
if (state == NO_FILE_OPENED || !arg_is_page_range(argv[argidx]))
{
if (state == NO_INFO_GATHERED)
{
showpages(ctx, doc, out, "1-");
}
pdf_drop_document(ctx, doc);
filename = argv[argidx];
fz_printf(ctx, out, "%s:\n", filename);
doc = pdf_open_document(ctx, filename);
if (pdf_needs_password(ctx, doc))
if (!pdf_authenticate_password(ctx, doc, password))
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot authenticate password: %s", filename);
state = NO_INFO_GATHERED;
}
else
{
ret |= showpages(ctx, doc, out, argv[argidx]);
state = INFO_SHOWN;
}
argidx++;
}
if (state == NO_INFO_GATHERED)
showpages(ctx, doc, out, "1-");
pdf_drop_document(ctx, doc);
return ret;
}
int pdfpages_main(int argc, char **argv)
{
char *filename = "";
char *password = "";
int c;
fz_output *out = NULL;
int ret;
fz_context *ctx;
while ((c = fz_getopt(argc, argv, "p:")) != -1)
{
switch (c)
{
case 'p': password = fz_optarg; break;
default:
infousage();
break;
}
}
if (fz_optind == argc)
infousage();
ctx = fz_new_context(NULL, NULL, FZ_STORE_UNLIMITED);
if (!ctx)
{
fprintf(stderr, "cannot initialise context\n");
exit(1);
}
fz_var(out);
ret = 0;
fz_try(ctx)
{
out = fz_new_output_with_file_ptr(ctx, stdout, 0);
ret = pdfpages_pages(ctx, out, filename, password, &argv[fz_optind], argc-fz_optind);
}
fz_catch(ctx)
{
ret = 1;
}
fz_drop_output(ctx, out);
fz_drop_context(ctx);
return ret;
}
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