Split mjs script generation to separate tool.

It has no real reason to live in mudraw, and it does pull in the
javascript dependency via pdf-form.c.

1 files changed, 302 insertions, 0 deletions

diff --git a/source/tools/mjsgen.c b/source/tools/mjsgen.c
new file mode 100644
index 00000000..3e11fde3
--- /dev/null
+++ b/source/tools/mjsgen.c
@@ -0,0 +1,302 @@
+/*
+ * mjs test file generation tool
+ */
+
+#include "mupdf/fitz.h"
+#include "mupdf/pdf.h"
+
+/*
+	A useful bit of bash script to call this to generate mjs files:
+	for f in tests_private/pdf/forms/v1.3/ *.pdf ; do g=${f%.*} ; echo $g ; ./mjsgen $g.pdf $g.mjs ; done
+
+	Remove the space from "/ *.pdf" before running - can't leave that
+	in here, as it causes a warning about a possibly malformed comment.
+*/
+
+static char lorem[] =
+"Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vestibulum "
+"vehicula augue id est lobortis mollis. Aenean vestibulum metus sed est "
+"gravida non tempus lacus aliquet. Nulla vehicula lobortis tincidunt. "
+"Donec malesuada nisl et lacus condimentum nec tincidunt urna gravida. "
+"Sed dapibus magna eu velit ultrices non rhoncus risus lacinia. Fusce "
+"vitae nulla volutpat elit dictum ornare at eu libero. Maecenas felis "
+"enim, tempor a tincidunt id, commodo consequat lectus.\n"
+"Morbi tincidunt adipiscing lacus eu dignissim. Pellentesque augue elit, "
+"ultrices vitae fermentum et, faucibus et purus. Nam ante libero, lacinia "
+"id tincidunt at, ultricies a lorem. Donec non neque at purus condimentum "
+"eleifend quis sit amet libero. Sed semper, mi ut tempus tincidunt, lacus "
+"eros pellentesque lacus, id vehicula est diam eu quam. Integer tristique "
+"fringilla rhoncus. Phasellus convallis, justo ut mollis viverra, dui odio "
+"euismod ante, nec fringilla nisl mi ac diam.\n"
+"Maecenas mi urna, ornare commodo feugiat id, cursus in massa. Vivamus "
+"augue augue, aliquam at varius eu, venenatis fermentum felis. Sed varius "
+"turpis a felis ultrices quis aliquet nunc tincidunt. Suspendisse posuere "
+"commodo nunc non viverra. Praesent condimentum varius quam, vel "
+"consectetur odio volutpat in. Sed malesuada augue ut lectus commodo porta. "
+"Vivamus eget mauris sit amet diam ultrices sollicitudin. Cras pharetra leo "
+"non elit lacinia vulputate.\n"
+"Donec ac enim justo, ornare scelerisque diam. Ut vel ante at lorem "
+"placerat bibendum ultricies mattis metus. Phasellus in imperdiet odio. "
+"Proin semper lacinia libero, sed rutrum eros blandit non. Duis tincidunt "
+"ligula est, non pellentesque mauris. Aliquam in erat scelerisque lacus "
+"dictum suscipit eget semper magna. Nullam luctus imperdiet risus a "
+"semper.\n"
+"Curabitur sit amet tempor sapien. Quisque et tortor in lacus dictum "
+"pulvinar. Nunc at nisl ut velit vehicula hendrerit. Mauris elementum "
+"sollicitudin leo ac ullamcorper. Proin vel leo nec justo tempus aliquet "
+"nec ut mi. Pellentesque vel nisl id dui hendrerit fermentum nec quis "
+"tortor. Proin eu sem luctus est consequat euismod. Vestibulum ante ipsum "
+"primis in faucibus orci luctus et ultrices posuere cubilia Curae; Fusce "
+"consectetur ultricies nisl ornare dictum. Cras sagittis consectetur lorem "
+"sed posuere. Mauris accumsan laoreet arcu, id molestie lorem faucibus eu. "
+"Vivamus commodo, neque nec imperdiet pretium, lorem metus viverra turpis, "
+"malesuada vulputate justo eros sit amet neque. Nunc quis justo elit, non "
+"rutrum mauris. Maecenas blandit condimentum nibh, nec vulputate orci "
+"pulvinar at. Proin sed arcu vel odio tempus lobortis sed posuere ipsum. Ut "
+"feugiat pellentesque tortor nec ornare.\n";
+
+static char *filename;
+fz_output *out = NULL;
+
+static char *mujstest_filename = NULL;
+static FILE *mujstest_file = NULL;
+static int mujstest_count = 0;
+
+static void usage(void)
+{
+	fprintf(stderr, "usage: mjsgen [-p password] input.pdf output.mjs\n");
+	exit(1);
+}
+
+static void escape_string(FILE *out, int len, const char *string)
+{
+	while (len-- && *string)
+	{
+		char c = *string++;
+		switch (c)
+		{
+		case '\n':
+			fputc('\\', out);
+			fputc('n', out);
+			break;
+		case '\r':
+			fputc('\\', out);
+			fputc('r', out);
+			break;
+		case '\t':
+			fputc('\\', out);
+			fputc('t', out);
+			break;
+		default:
+			fputc(c, out);
+		}
+	}
+}
+
+static void processpage(fz_context *ctx, fz_document *doc, int pagenum)
+{
+	fz_page *page;
+	int needshot = 0;
+
+	fz_try(ctx)
+	{
+		page = fz_load_page(doc, pagenum - 1);
+	}
+	fz_catch(ctx)
+	{
+		fz_rethrow_message(ctx, "cannot load page %d in file '%s'", pagenum, filename);
+	}
+
+	pdf_document *inter = pdf_specifics(doc);
+	pdf_widget *widget = NULL;
+
+	if (inter)
+		widget = pdf_first_widget(inter, (pdf_page *)page);
+
+	if (widget)
+	{
+		fprintf(mujstest_file, "GOTO %d\n", pagenum);
+		needshot = 1;
+	}
+	for (;widget; widget = pdf_next_widget(widget))
+	{
+		fz_rect rect;
+		int w, h, len;
+		int type = pdf_widget_get_type(widget);
+
+		pdf_bound_widget(widget, &rect);
+		w = (rect.x1 - rect.x0);
+		h = (rect.y1 - rect.y0);
+		++mujstest_count;
+		switch (type)
+		{
+		default:
+			fprintf(mujstest_file, "%% UNKNOWN %0.2f %0.2f %0.2f %0.2f\n", rect.x0, rect.y0, rect.x1, rect.y1);
+			break;
+		case PDF_WIDGET_TYPE_PUSHBUTTON:
+			fprintf(mujstest_file, "%% PUSHBUTTON %0.2f %0.2f %0.2f %0.2f\n", rect.x0, rect.y0, rect.x1, rect.y1);
+			break;
+		case PDF_WIDGET_TYPE_CHECKBOX:
+			fprintf(mujstest_file, "%% CHECKBOX %0.2f %0.2f %0.2f %0.2f\n", rect.x0, rect.y0, rect.x1, rect.y1);
+			break;
+		case PDF_WIDGET_TYPE_RADIOBUTTON:
+			fprintf(mujstest_file, "%% RADIOBUTTON %0.2f %0.2f %0.2f %0.2f\n", rect.x0, rect.y0, rect.x1, rect.y1);
+			break;
+		case PDF_WIDGET_TYPE_TEXT:
+		{
+			int maxlen = pdf_text_widget_max_len(inter, widget);
+			int texttype = pdf_text_widget_content_type(inter, widget);
+
+			/* If height is low, assume a single row, and base
+			 * the width off that. */
+			if (h < 10)
+			{
+				w = (w+h-1) / (h ? h : 1);
+				h = 1;
+			}
+			/* Otherwise, if width is low, work off height */
+			else if (w < 10)
+			{
+				h = (w+h-1) / (w ? w : 1);
+				w = 1;
+			}
+			else
+			{
+				w = (w+9)/10;
+				h = (h+9)/10;
+			}
+			len = w*h;
+			if (len < 2)
+				len = 2;
+			if (len > maxlen)
+				len = maxlen;
+			fprintf(mujstest_file, "%% TEXT %0.2f %0.2f %0.2f %0.2f\n", rect.x0, rect.y0, rect.x1, rect.y1);
+			switch (texttype)
+			{
+			default:
+			case PDF_WIDGET_CONTENT_UNRESTRAINED:
+				fprintf(mujstest_file, "TEXT %d ", mujstest_count);
+				escape_string(mujstest_file, len-3, lorem);
+				fprintf(mujstest_file, "\n");
+				break;
+			case PDF_WIDGET_CONTENT_NUMBER:
+				fprintf(mujstest_file, "TEXT %d\n", mujstest_count);
+				break;
+			case PDF_WIDGET_CONTENT_SPECIAL:
+#ifdef __MINGW32__
+				fprintf(mujstest_file, "TEXT %I64d\n", 46702919800LL + mujstest_count);
+#else
+				fprintf(mujstest_file, "TEXT %lld\n", 46702919800LL + mujstest_count);
+#endif
+				break;
+			case PDF_WIDGET_CONTENT_DATE:
+				fprintf(mujstest_file, "TEXT Jun %d 1979\n", 1 + ((13 + mujstest_count) % 30));
+				break;
+			case PDF_WIDGET_CONTENT_TIME:
+				++mujstest_count;
+				fprintf(mujstest_file, "TEXT %02d:%02d\n", ((mujstest_count/60) % 24), mujstest_count % 60);
+				break;
+			}
+			break;
+		}
+		case PDF_WIDGET_TYPE_LISTBOX:
+			fprintf(mujstest_file, "%% LISTBOX %0.2f %0.2f %0.2f %0.2f\n", rect.x0, rect.y0, rect.x1, rect.y1);
+			break;
+		case PDF_WIDGET_TYPE_COMBOBOX:
+			fprintf(mujstest_file, "%% COMBOBOX %0.2f %0.2f %0.2f %0.2f\n", rect.x0, rect.y0, rect.x1, rect.y1);
+			break;
+		}
+		fprintf(mujstest_file, "CLICK %0.2f %0.2f\n", (rect.x0+rect.x1)/2, (rect.y0+rect.y1)/2);
+	}
+
+	fz_flush_warnings(ctx);
+
+	if (mujstest_file && needshot)
+	{
+		fprintf(mujstest_file, "SCREENSHOT\n");
+	}
+}
+
+static void processpages(fz_context *ctx, fz_document *doc)
+{
+	int page, pagecount;
+	pagecount = fz_count_pages(doc);
+	for (page = 1; page <= pagecount; ++page)
+		processpage(ctx, doc, page);
+}
+
+int main(int argc, char **argv)
+{
+	char *password = "";
+	fz_document *doc = NULL;
+	fz_context *ctx;
+	int c;
+
+	fz_var(doc);
+
+	while ((c = fz_getopt(argc, argv, "p:")) != -1)
+	{
+		switch (c)
+		{
+		default: usage(); break;
+		case 'p': password = fz_optarg; break;
+		}
+	}
+
+	if (fz_optind + 2 != argc)
+		usage();
+
+	filename = argv[fz_optind];
+	mujstest_filename = argv[fz_optind+1];
+
+	if (strcmp(mujstest_filename, "-") == 0)
+		mujstest_file = stdout;
+	else
+		mujstest_file = fopen(mujstest_filename, "wb");
+
+	ctx = fz_new_context(NULL, NULL, FZ_STORE_DEFAULT);
+	if (!ctx)
+	{
+		fprintf(stderr, "cannot initialise context\n");
+		exit(1);
+	}
+
+	fz_register_document_handlers(ctx);
+
+	fz_try(ctx)
+	{
+		doc = fz_open_document(ctx, filename);
+
+		if (fz_needs_password(doc))
+		{
+			if (!fz_authenticate_password(doc, password))
+				fz_throw(ctx, FZ_ERROR_GENERIC, "cannot authenticate password: %s", filename);
+			fprintf(mujstest_file, "PASSWORD %s\n", password);
+		}
+
+		fprintf(mujstest_file, "OPEN %s\n", filename);
+
+		processpages(ctx, doc);
+
+		fz_close_document(doc);
+	}
+	fz_catch(ctx)
+	{
+		fprintf(stderr, "mjsgen: cannot process document: %s\n", filename);
+		return 1;
+	}
+
+	fclose(mujstest_file);
+	fz_free_context(ctx);
+	return 0;
+}
+
+#ifdef _MSC_VER
+int wmain(int argc, wchar_t *wargv[])
+{
+	char **argv = fz_argv_from_wargv(argc, wargv);
+	int ret = main(argc, argv);
+	fz_free_argv(argc, argv);
+	return ret;
+}
+#endif