Add multiple magic with continuation test

tests/Makefile.am

@@ -57,6 +57,11 @@ jsonlines1.testfile \
 jsonlines1.result \
 matilde.arm.result \
 matilde.arm.testfile \
+multiple-A.magic \
+multiple-B.magic \
+multiple.flags \
+multiple.result \
+multiple.testfile \
 pcjr.result \
 pcjr.testfile \
 pgp-binary-key-v2-phil.result \
@@ -127,14 +132,27 @@ zstd-v0.8-FF.testfile
 
 T = $(top_srcdir)/tests
 check-local:
-	MAGIC=$(top_builddir)/magic/magic ./test
 	set -e; \
 	for i in $T/*.testfile; do \
-		echo Running test: $$i; \
-		if [ -f $${i%%.testfile}.magic ]; then \
-			m=$${i%%.testfile}.magic; \
-		else \
+		t=$${i%%.testfile}; \
+		echo Running test: $$t; \
+		m=; \
+		for j in $$(eval echo $${t}\*.magic); do \
+			if [ -f "$$j" ]; then \
+				if [ -z "$$m" ]; then \
+					m=$$j; \
+				else \
+					m=$$m:$$j; \
+				fi \
+			fi \
+		done; \
+		if [ -z "$$m" ]; then \
 			m=$(top_builddir)/magic/magic; \
 		fi; \
-		TZ=UTC MAGIC=$$m ./test $$i $${i%%.testfile}.result; \
+		f=-e; \
+		if [ -f $${t}.flags ]; then \
+			f=$$f$$(cat $${t}.flags); \
+		fi; \
+		echo TZ=UTC MAGIC=$$m ./test $$f $$i $${t}.result; \
+		TZ=UTC MAGIC=$$m ./test $$f $$i $${t}.result; \
 	done

tests/multiple-A.magic

@@ -0,0 +1,2 @@
+0 search {\\rt1 RTF1.0
+16 search ViVa2 Viva File 2.0

tests/multiple-B.magic

@@ -0,0 +1,2 @@
+6 search ABCD ABCD File
+10 search TesT Test File 1.0

tests/multiple.flags

@@ -0,0 +1 @@
+k

tests/multiple.result

@@ -0,0 +1 @@
+RTF1.0\012- Viva File 2.0\012- ABCD File\012- Test File 1.0, ASCII text, with no line terminators

tests/multiple.testfile

@@ -0,0 +1 @@
+{\rt1 ABCDTesT xxViVa2

tests/test.c

@@ -27,6 +27,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
 #include <string.h>
 #include <errno.h>
 
@@ -76,11 +77,11 @@ slurp(FILE *fp, size_t *final_len)
 int
 main(int argc, char **argv)
 {
-	struct magic_set *ms;
+	struct magic_set *ms = NULL;
 	const char *result;
 	size_t result_len, desired_len;
 	char *desired = NULL;
-	int e = EXIT_FAILURE;
+	int e = EXIT_FAILURE, flags, c;
 	FILE *fp;
 
 
@@ -90,7 +91,32 @@ main(int argc, char **argv)
 	else
 		prog = argv[0];
 
-	ms = magic_open(MAGIC_ERROR);
+	if (argc == 1)
+		return 0;
+
+	flags = 0;
+	while ((c = getopt(argc, argv, "ek")) != -1)
+		switch (c) {
+		case 'e':
+			flags |= MAGIC_ERROR;
+			break;
+		case 'k':
+			flags |= MAGIC_CONTINUE;
+			break;
+		default:
+			goto usage;
+		}
+
+	argc -= optind;
+	argv += optind;
+	if (argc != 2) {
+usage:
+		(void)fprintf(stderr,
+		    "Usage: %s [-ek] TEST-FILE RESULT\n", prog);
+		goto bad;
+	}
+
+	ms = magic_open(flags);
 	if (ms == NULL) {
 		(void)fprintf(stderr, "%s: ERROR opening MAGIC_NONE: %s\n",
 		    prog, strerror(errno));
@@ -102,29 +128,20 @@ main(int argc, char **argv)
 		goto bad;
 	}
 
-	if (argc == 1) {
-		e = 0;
-		goto bad;
-	}
-
-	if (argc != 3) {
-		(void)fprintf(stderr, "Usage: %s TEST-FILE RESULT\n", prog);
-		goto bad;
-	}
-	if ((result = magic_file(ms, argv[1])) == NULL) {
+	if ((result = magic_file(ms, argv[0])) == NULL) {
 		(void)fprintf(stderr, "%s: ERROR loading file %s: %s\n",
 		    prog, argv[1], magic_error(ms));
 		goto bad;
 	}
-	fp = fopen(argv[2], "r");
+	fp = fopen(argv[1], "r");
 	if (fp == NULL) {
 		(void)fprintf(stderr, "%s: ERROR opening `%s': %s",
-		    prog, argv[2], strerror(errno));
+		    prog, argv[1], strerror(errno));
 		goto bad;
 	}
 	desired = slurp(fp, &desired_len);
 	fclose(fp);
-	(void)printf("%s: %s\n", argv[1], result);
+	(void)printf("%s: %s\n", argv[0], result);
 	if (strcmp(result, desired) != 0) {
 	    result_len = strlen(result);
 	    (void)fprintf(stderr, "%s: ERROR: result was (len %zu)\n%s\n"
@@ -135,6 +152,7 @@ main(int argc, char **argv)
 	e = 0;
 bad:
 	free(desired);
-	magic_close(ms);
+	if (ms)
+		magic_close(ms);
 	return e;
 }