Two programs to test poppler document property getters & setters

printprops.c

#include <assert.h>
#include <gio/gio.h>
#include <poppler.h>
#include <stdio.h>

void smartprint_str(const char *label, const char *value) {
    printf("%s: ", label);

    if (value == NULL) {
        printf("none\n");
    } else {
        printf("%s\n", value);
    }
}

void smartprint_time(const char *label, time_t value) {
    printf("%s: ", label);

    if (value == -1) {
        printf("none\n");
    } else {
        printf("%s", asctime(gmtime(&value)));
    }
}

int main(int argc, char * argv[]) {
    assert(argc == 2);

    GFile *file = g_file_new_for_path(argv[1]);

    GError *err = NULL;
    PopplerDocument *doc = poppler_document_new_from_gfile(file, NULL,  NULL, &err);

    if (doc == NULL) {
        fprintf(stderr, "%s\n", err->message);
        return 1;
    }

    char *title = poppler_document_get_title(doc);
    char *author = poppler_document_get_author(doc);
    char *subject = poppler_document_get_subject(doc);
    char *keywords = poppler_document_get_keywords(doc);
    char *creator = poppler_document_get_creator(doc);
    char *producer = poppler_document_get_producer(doc);
    time_t creation_date = poppler_document_get_creation_date(doc);
    time_t modification_date = poppler_document_get_modification_date(doc);

    smartprint_str("Title", title);
    smartprint_str("Author", author);
    smartprint_str("Subject", subject);
    smartprint_str("Keywords", keywords);
    smartprint_str("Creator", creator);
    smartprint_str("Producer", producer);
    smartprint_time("CreationDate", creation_date);
    smartprint_time("ModDate", modification_date);

    g_free(title);
    g_free(author);
    g_free(subject);
    g_free(keywords);
    g_free(creator);
    g_free(producer);

    g_object_unref(doc);
    g_object_unref(file);

    return 0;
}

setprops.c

#include <assert.h>
#include <gio/gio.h>
#include <poppler.h>
#include <stdio.h>

int main(int argc, char * argv[]) {
    assert(argc == 2);

    GFile *file = g_file_new_for_path(argv[1]);

    GError *err = NULL;
    PopplerDocument *doc = poppler_document_new_from_gfile(file, NULL,  NULL, &err);

    if (doc == NULL) {
        goto fail;
    }

    poppler_document_set_title(doc, "New title");
    poppler_document_set_author(doc, "New author");
    poppler_document_set_subject(doc, "New subject");
    poppler_document_set_keywords(doc, "New keywords");
    poppler_document_set_creator(doc, "New creator");
    poppler_document_set_producer(doc, "New producer");

    static const time_t new_time = 692496000; // 1991-12-12
    poppler_document_set_creation_date(doc, new_time);
    poppler_document_set_modification_date(doc, new_time);

    char *filename = g_strconcat(argv[1], ".new", NULL);
    char *uri = g_filename_to_uri(filename, NULL, NULL);

    gboolean success = poppler_document_save(doc, uri, &err);
    if (!success) {
        goto fail;
    }

    g_free(uri);
    g_free(filename);

    g_object_unref(doc);
    g_object_unref(file);

    return 0;

fail:
    fprintf(stderr, "%s\n", err->message);
    return 1;
}