mirror of https://github.com/qpdf/qpdf.git
68 lines
1.4 KiB
C
68 lines
1.4 KiB
C
/*
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* This is an example of how to write C++ functions and make them usable with the qpdf C API. It
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* consists of three files:
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* - extend-c-api.h -- a plain C header file
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* - extend-c-api.c -- a C program that calls the function
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* - extend-c-api.cc -- a C++ file that implements the function
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*/
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#include "extend-c-api.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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static char const* whoami = 0;
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static void
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usage()
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{
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fprintf(stderr, "Usage: %s infile\n", whoami);
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exit(2);
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}
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int
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main(int argc, char* argv[])
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{
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char* infile = NULL;
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qpdf_data qpdf = qpdf_init();
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int warnings = 0;
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int errors = 0;
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char* p = NULL;
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if ((p = strrchr(argv[0], '/')) != NULL) {
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whoami = p + 1;
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} else if ((p = strrchr(argv[0], '\\')) != NULL) {
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whoami = p + 1;
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} else {
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whoami = argv[0];
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}
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if (argc != 2) {
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usage();
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}
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infile = argv[1];
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if ((qpdf_read(qpdf, infile, NULL) & QPDF_ERRORS) == 0) {
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int npages;
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if ((num_pages(qpdf, &npages) & QPDF_ERRORS) == 0) {
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printf("num pages = %d\n", npages);
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}
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}
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if (qpdf_more_warnings(qpdf)) {
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warnings = 1;
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}
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if (qpdf_has_error(qpdf)) {
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errors = 1;
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printf("error: %s\n", qpdf_get_error_full_text(qpdf, qpdf_get_error(qpdf)));
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}
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qpdf_cleanup(&qpdf);
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if (errors) {
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return 2;
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} else if (warnings) {
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return 3;
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}
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return 0;
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}
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