Generate alf usage from rst.

8 files changed, 35 insertions, 5 deletions

diff --git a/src/Makefile b/src/Makefile
index 161376b..ed5f4d0 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -41,7 +41,7 @@ CFLAGS=-DVERSION='"$(VERSION)"' -Wall -I../f65 $(COPT)
 
 UNALF_OBJS=unalf.o io.o listalf.o extract.o f65.o glob.o opts.o usage.o self.o asmcode.o
 ALFSUM_OBJS=alfsum.o self.o
-ALF_OBJS=alf.o self.o
+ALF_OBJS=alf.o self.o alfusage.o
 
 .PHONY: all clean install crosswin windows windows-upload realclean
 
@@ -61,12 +61,17 @@ alf: $(ALF_OBJS)
 
 usage.o: usage.c
 
+alfusage.o: usage.c
+
 f65.o: ../f65/f65.c ../f65/f65.h
 	$(CC) $(CFLAGS) -c -o f65.o ../f65/f65.c
 
 usage.c: mkusage.pl unalf.rst
 	perl mkusage.pl unalf.rst > usage.c
 
+alfusage.c: mkusage.pl unalf.rst
+	perl mkusage.pl alf.rst > alfusage.c
+
 unalf.o: unalf.c unalf.h ../f65/f65.h
 
 glob.o: glob.c unalf.h
diff --git a/src/alf.1 b/src/alf.1
index 7436c88..2266526 100644
--- a/src/alf.1
+++ b/src/alf.1
@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "ALF" 1 "2025-11-26" "0.2.0" "Urchlay's Atari 8-bit Tools"
+.TH "ALF" 1 "2025-11-27" "0.2.0" "Urchlay's Atari 8-bit Tools"
 .SH NAME
 alf \- create Atari 8-bit ALF archives
 .\" RST source for alf(1) man page. Convert with:
@@ -64,10 +64,16 @@ Append to \fIalf\-file\fP\&. The files are added to the end of the archive. Be
 careful not to add a file with the same name as as existing member of
 the archive. If \fIalf\-file\fP doesn\(aqt exist, it will be created. No backup
 is made with \fB\-a\fP\&.
+.UNINDENT
+.\" append to alf file.
+.
+.INDENT 0.0
 .TP
 .B  \-o
 Overwrite \fIalf\-file\fP if it exists; do not make a \fB~\fP backup.
 .UNINDENT
+.\" overwrite alf file if exists (do not create file~ backup).
+.
 .SH EXIT STATUS
 .INDENT 0.0
 .TP
diff --git a/src/alf.c b/src/alf.c
index 3492720..d294378 100644
--- a/src/alf.c
+++ b/src/alf.c
@@ -335,11 +335,16 @@ void crunch_file(const char *filename) {
 }
 
 void usage(void) {
+	extern char *usage_msg[];
+	char **line;
+
 	puts("alf (ALF compressor) v" VERSION " by B. Watson, WTFPL.");
 	printf("Usage: %s [-a|-o] archive.alf file [file ...]\n", self);
 	puts("Options:");
-	puts("  -a: append to archive");
-	puts("  -o: overwrite archive (don't make backup with ~)");
+
+	for(line = usage_msg; *line; line++)
+		puts(*line);
+
 	exit(0);
 }
 
diff --git a/src/alf.rst b/src/alf.rst
index 08af9c2..898efb3 100644
--- a/src/alf.rst
+++ b/src/alf.rst
@@ -53,9 +53,13 @@ OPTIONS
   the archive. If *alf-file* doesn't exist, it will be created. No backup
   is made with **-a**.
 
+.. append to alf file.
+
 -o
   Overwrite *alf-file* if it exists; do not make a **~** backup.
 
+.. overwrite alf file if exists (do not create file~ backup).
+
 EXIT STATUS
 ===========
 
diff --git a/src/alfusage.c b/src/alfusage.c
new file mode 100644
index 0000000..c8f973d
--- /dev/null
+++ b/src/alfusage.c
@@ -0,0 +1,5 @@
+const char *usage_msg[] = {
+	"  -a: append to alf file.",
+	"  -o: overwrite alf file if exists (do not create file~ backup).",
+	(const char*)0
+};
diff --git a/src/mkusage.pl b/src/mkusage.pl
index d8a5c77..e2274c2 100644
--- a/src/mkusage.pl
+++ b/src/mkusage.pl
@@ -5,6 +5,7 @@ print "const char *usage_msg[] = {\n";
 while(<>) {
 	chomp;
 	next if /^---/;
+	last if /^\.\. ENFOPTS/;
 	if(/^-[-a-zA-Z\d]/) {
 		$opt = $_;
 		next;
diff --git a/src/unalf.1 b/src/unalf.1
index 1708a4b..396a5f6 100644
--- a/src/unalf.1
+++ b/src/unalf.1
@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "UNALF" 1 "2025-11-26" "0.2.0" "Urchlay's Atari 8-bit Tools"
+.TH "UNALF" 1 "2025-11-27" "0.2.0" "Urchlay's Atari 8-bit Tools"
 .SH NAME
 unalf \- extract Atari 8-bit ALF archives
 .\" RST source for unalf(1) man page. Convert with:
@@ -208,6 +208,8 @@ to exclude multiple patterns.
 .UNINDENT
 .\" exclude <wildcard>. may be given multiple times.
 .
+.\" ENDOPTS
+.
 .SH WILDCARDS
 .sp
 Wildcard (aka glob) matching works like it does on the Atari: \fI*.*\fP
diff --git a/src/unalf.rst b/src/unalf.rst
index bee3046..24774e6 100644
--- a/src/unalf.rst
+++ b/src/unalf.rst
@@ -168,6 +168,8 @@ OPTIONS
 
 .. exclude <wildcard>. may be given multiple times.
 
+.. ENDOPTS
+
 WILDCARDS
 =========