C linearization example

git-svn-id: svn+q:///qpdf/trunk@739 71b93d88-0707-0410-a8cf-f5a4172ac649

1 files changed, 74 insertions, 0 deletions

diff --git a/examples/pdf-linearize.c b/examples/pdf-linearize.c
new file mode 100644
index 00000000..ca49a4d9
--- /dev/null
+++ b/examples/pdf-linearize.c
@@ -0,0 +1,74 @@
+/*
+ * This is an example program to linearize a PDF file using the C API.
+ */
+
+#include <qpdf/qpdf-c.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static char const* whoami = 0;
+
+static void usage()
+{
+    fprintf(stderr, "Usage: %s infile infile-password outfile\n", whoami);
+    exit(2);
+}
+
+int main(int argc, char* argv[])
+{
+    char* infile = argv[1];
+    char* password = argv[2];
+    char* outfile = argv[3];
+    qpdf_data qpdf = qpdf_init();
+    int warnings = 0;
+    int errors = 0;
+    char* p = 0;
+
+    if ((p = strrchr(argv[0], '/')) != NULL)
+    {
+	whoami = p + 1;
+    }
+    else if ((p = strrchr(argv[0], '\\')) != NULL)
+    {
+	whoami = p + 1;
+    }
+    else
+    {
+	whoami = argv[0];
+    }
+
+    if (argc != 4)
+    {
+	usage();
+    }
+
+    if (((qpdf_read(qpdf, infile, password) & QPDF_ERRORS) == 0) &&
+	((qpdf_init_write(qpdf, outfile) & QPDF_ERRORS) == 0))
+    {
+	qpdf_set_static_ID(qpdf, QPDF_TRUE);
+	qpdf_set_linearization(qpdf, QPDF_TRUE);
+	qpdf_write(qpdf);
+    }
+    while (qpdf_more_warnings(qpdf))
+    {
+	warnings = 1;
+	printf("warning: %s\n", qpdf_next_warning(qpdf));
+    }
+    while (qpdf_more_errors(qpdf))
+    {
+	errors = 1;
+	printf("error: %s\n", qpdf_next_error(qpdf));
+    }
+    qpdf_cleanup(&qpdf);
+    if (errors)
+    {
+	return 2;
+    }
+    else if (warnings)
+    {
+	return 3;
+    }
+
+    return 0;
+}