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Clean up pdfioinfo example changes.

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Michael R Sweet 2025-02-13 19:25:44 -05:00
parent 5f98c7838c
commit eff02198ab
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1 changed files with 81 additions and 76 deletions
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139
examples/pdfioinfo.c
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@ -13,6 +13,7 @@
#include <pdfio.h>
#include <time.h>
#include <math.h>
//
@ -25,18 +26,26 @@ main(int argc, // I - Number of command-line arguments
{
const char *filename; // PDF filename
pdfio_file_t *pdf; // PDF file
pdfio_dict_t *catalog; // Catalog dictionary
const char *author, // Author name
*creator, // Creator name
*producer; // Producer name
*producer, // Producer name
*title; // Title
time_t creation_date, // Creation date
mod_date; // Modification date
modification_date; // Modification date
struct tm *creation_tm, // Creation date/time information
*mod_tm; // Mod. date/time information
*modification_tm; // Modification date/time information
char creation_text[256], // Creation date/time as a string
mod_text[256]; // Mod. date/time human fmt string
const char *title; // Title
modification_text[256], // Modification date/time human fmt string
range_text[255]; // Page range text
size_t num_pages; // PDF number of pages
bool has_acroform; // AcroForm or not
bool has_acroform; // Does the file have an AcroForm?
pdfio_obj_t *page; // Object
pdfio_dict_t *page_dict; // Object dictionary
size_t cur, // Current page index
prev; // Previous page index
pdfio_rect_t cur_box, // Current MediaBox
prev_box; // Previous MediaBox
// Get the filename from the command-line...
@ -55,12 +64,14 @@ main(int argc, // I - Number of command-line arguments
if (pdf == NULL)
return (1);
// Get the title, author...
// Get the title, author, etc...
catalog = pdfioFileGetCatalog(pdf);
author = pdfioFileGetAuthor(pdf);
title = pdfioFileGetTitle(pdf);
creator = pdfioFileGetCreator(pdf);
producer = pdfioFileGetProducer(pdf);
has_acroform = pdfioDictGetObj(catalog, "AcroForm") != NULL ? true : false;
num_pages = pdfioFileGetNumPages(pdf);
producer = pdfioFileGetProducer(pdf);
title = pdfioFileGetTitle(pdf);
// Get the creation date and convert to a string...
if ((creation_date = pdfioFileGetCreationDate(pdf)) > 0)
@ -74,23 +85,14 @@ main(int argc, // I - Number of command-line arguments
}
// Get the modification date and convert to a string...
if ((mod_date = pdfioFileGetModDate(pdf)) > 0)
if ((modification_date = pdfioFileGetModificationDate(pdf)) > 0)
{
mod_tm = localtime(&mod_date);
strftime(mod_text, sizeof(mod_text), "%c", mod_tm);
modification_tm = localtime(&modification_date);
strftime(modification_text, sizeof(modification_text), "%c", modification_tm);
}
else
{
snprintf(mod_text, sizeof(mod_text), "-- not set --");
}
// Detect simply if AcroFrom is a dict in catalog
{
pdfio_dict_t *dict; // some Object dictionary
dict = pdfioFileGetCatalog(pdf);
has_acroform = (dict != NULL && pdfioDictGetObj(dict, "AcroForm") != NULL)?
true : false;
snprintf(modification_text, sizeof(modification_text), "-- not set --");
}
// Print file information to stdout...
@ -100,55 +102,58 @@ main(int argc, // I - Number of command-line arguments
printf(" Creator: %s\n", creator ? creator : "-- not set --");
printf(" Producer: %s\n", producer ? producer : "-- not set --");
printf(" Created On: %s\n", creation_text);
printf(" Modified On: %s\n", mod_text);
printf(" Modified On: %s\n", modification_text);
printf(" Version: %s\n", pdfioFileGetVersion(pdf));
printf(" AcroForm: %s\n", has_acroform ? "Yes" : "No");
printf(" Number Pages: %u\n", (unsigned)num_pages);
printf(" MediaBoxes:");
// There can be a different MediaBox per page
// Loop and report MediaBox and number of consecutive pages of this size
{
pdfio_obj_t *obj; // Object
pdfio_dict_t *dict; // Object dictionary
pdfio_rect_t prev, // MediaBox previous
now; // MediaBox now
size_t n, // Page index
nprev; // Number previous prev size
printf(" Number of Pages: %u\n", (unsigned)num_pages);
// MediaBox should be set at least on the root
for (n = nprev = 0; n < num_pages; n++)
{
obj = pdfioFileGetPage(pdf, n);
while (obj != NULL)
{
dict = pdfioObjGetDict(obj);
if (pdfioDictGetRect(dict, "MediaBox", &now))
{
if (
nprev == 0
|| (
now.x1 != prev.x1 || now.y1 != prev.y1
|| now.x2 != prev.x2 || now.y2 != prev.y2
)
)
{
if (nprev) printf("(%zd) ", nprev);
prev = now;
printf("[%.7g %.7g %.7g %.7g]", now.x1, now.y1, now.x2, now.y2);
nprev = 1;
}
else
++nprev;
obj = NULL;
}
else
obj = pdfioDictGetObj(dict, "Parent");
}
}
printf("(%zd)", nprev);
}
printf("\n");
// Report the MediaBox for all of the pages
prev_box.x1 = prev_box.x2 = prev_box.y1 = prev_box.y2 = 0.0;
for (cur = 0, prev = 0; cur < num_pages; cur ++)
{
// Find the MediaBox for this page in the page tree...
for (page = pdfioFileGetPage(pdf, cur);
page != NULL;
page = pdfioDictGetObj(page_dict, "Parent"))
{
cur_box.x1 = cur_box.x2 = cur_box.y1 = cur_box.y2 = 0.0;
page_dict = pdfioObjGetDict(page);
if (pdfioDictGetRect(page_dict, "MediaBox", &cur_box))
break;
}
// If this MediaBox is different from the previous one, show the range of
// pages that have that size...
if (cur == 0 ||
fabs(cur_box.x1 - prev_box.x1) > 0.01 ||
fabs(cur_box.y1 - prev_box.y1) > 0.01 ||
fabs(cur_box.x2 - prev_box.x2) > 0.01 ||
fabs(cur_box.y2 - prev_box.y2) > 0.01)
{
if (cur > prev)
{
snprintf(range_text, sizeof(range_text), "Pages %u-%u",
(unsigned)(prev + 1), (unsigned)cur);
printf("%16s: [%g %g %g %g]\n", range_text,
prev_box.x1, prev_box.y1, prev_box.x2, prev_box.y2);
}
// Start a new series of pages with the new size...
prev = cur;
prev_box = cur_box;
}
}
// Show the last range as needed...
if (cur > prev)
{
snprintf(range_text, sizeof(range_text), "Pages %u-%u",
(unsigned)(prev + 1), (unsigned)cur);
printf("%16s: [%g %g %g %g]\n", range_text,
prev_box.x1, prev_box.y1, prev_box.x2, prev_box.y2);
}
// Close the PDF file...
pdfioFileClose(pdf);