created initial layout and a dummy more.c

10 files changed, 333 insertions, 0 deletions

diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..f246365
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,25 @@
+MIT License
+
+© 2023 Andreas Baumann <mail@andreasbaumann.cc>
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+
+Authors/contributors include:
+
+© 2023 Andreas Baumann <mail@andreasbaumann.cc>
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..0a0fdc2
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,98 @@
+include config.mk
+
+.SUFFIXES:
+.SUFFIXES: .o .c
+
+HDR =\
+	arg.h\
+	util.h
+
+LIBUTIL = libutil.a
+LIBUTILSRC =\
+	libutil/eprintf.c
+
+LIB = $(LIBUTF) $(LIBUTIL)
+
+BIN =\
+	more
+
+LIBUTILOBJ = $(LIBUTILSRC:.c=.o)
+OBJ = $(BIN:=.o) $(LIBUTFOBJ) $(LIBUTILOBJ)
+SRC = $(BIN:=.c)
+MAN = $(BIN:=.1)
+
+all: $(BIN)
+
+$(BIN): $(LIB) $(@:=.o)
+
+$(OBJ): $(HDR) config.mk
+
+.o:
+	$(CC) $(LDFLAGS) -o $@ $< $(LIB)
+
+.c.o:
+	$(CC) $(CFLAGS) $(CPPFLAGS) -o $@ -c $<
+
+$(LIBUTIL): $(LIBUTILOBJ)
+	$(AR) rc $@ $?
+	$(RANLIB) $@
+
+install: all
+	mkdir -p $(DESTDIR)$(PREFIX)/bin
+	cp -f $(BIN) $(DESTDIR)$(PREFIX)/bin
+	mv -f $(DESTDIR)$(PREFIX)/bin/xinstall $(DESTDIR)$(PREFIX)/bin/install
+	mkdir -p $(DESTDIR)$(MANPREFIX)/man1
+	for m in $(MAN); do sed "s/^\.Os abase/.Os abase $(VERSION)/g" < "$$m" > $(DESTDIR)$(MANPREFIX)/man1/"$$m"; done
+	cd $(DESTDIR)$(MANPREFIX)/man1 && chmod 644 $(MAN)
+	mv -f $(DESTDIR)$(MANPREFIX)/man1/xinstall.1 $(DESTDIR)$(MANPREFIX)/man1/install.1
+
+uninstall:
+	cd $(DESTDIR)$(PREFIX)/bin && rm -f $(BIN)
+	cd $(DESTDIR)$(MANPREFIX)/man1 && rm -f $(MAN)
+
+dist: clean
+	mkdir -p abase-$(VERSION)
+	cp -r LICENSE Makefile README TODO config.mk $(SRC) $(MAN) libutil $(HDR) abase-$(VERSION)
+	tar -cf abase-$(VERSION).tar abase-$(VERSION)
+	gzip abase-$(VERSION).tar
+	rm -rf abase-$(VERSION)
+
+abase-box: $(LIB) $(SRC)
+	mkdir -p build
+	cp $(HDR) build
+	for f in $(SRC); do sed "s/^main(/$$(echo "$${f%.c}" | sed s/-/_/g)_&/" < $$f > build/$$f; done
+	echo '#include <libgen.h>'                                                                                                     > build/$@.c
+	echo '#include <stdio.h>'                                                                                                     >> build/$@.c
+	echo '#include <stdlib.h>'                                                                                                    >> build/$@.c
+	echo '#include <string.h>'                                                                                                    >> build/$@.c
+	echo '#include "util.h"'                                                                                                      >> build/$@.c
+	for f in $(SRC); do echo "int $$(echo "$${f%.c}" | sed s/-/_/g)_main(int, char **);"; done                                    >> build/$@.c
+	echo 'int main(int argc, char *argv[]) { char *s = basename(argv[0]);'                                                        >> build/$@.c
+	echo 'if(!strcmp(s,"abase-box")) { argc--; argv++; s = basename(argv[0]); } if(0) ;'                                          >> build/$@.c
+	for f in $(SRC); do echo "else if(!strcmp(s, \"$${f%.c}\")) return $$(echo "$${f%.c}" | sed s/-/_/g)_main(argc, argv);"; done >> build/$@.c
+	echo 'else {'                                                                                                                 >> build/$@.c
+	for f in $(SRC); do echo "fputs(\"$${f%.c} \", stdout);"; done                                                                >> build/$@.c
+	echo 'putchar(0xa); }; return 0; }'                                                                                           >> build/$@.c
+	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $@ build/*.c $(LIB)
+	rm -r build
+
+abase-box-install: abase-box
+	mkdir -p $(DESTDIR)$(PREFIX)/bin
+	cp -f abase-box $(DESTDIR)$(PREFIX)/bin
+	chmod 755 $(DESTDIR)$(PREFIX)/bin/abase-box
+	for f in $(BIN); do ln -sf abase-box $(DESTDIR)$(PREFIX)/bin/"$$f"; done
+	mkdir -p $(DESTDIR)$(MANPREFIX)/man1
+	for m in $(MAN); do sed "s/^\.Os abase/.Os abase $(VERSION)/g" < "$$m" > $(DESTDIR)$(MANPREFIX)/man1/"$$m"; done
+	cd $(DESTDIR)$(MANPREFIX)/man1 && chmod 644 $(MAN)
+	mv -f $(DESTDIR)$(MANPREFIX)/man1/xinstall.1 $(DESTDIR)$(MANPREFIX)/man1/install.1
+
+abase-box-uninstall: uninstall
+	cd $(DESTDIR)$(PREFIX)/bin && rm -f abase-box
+
+clean:
+	rm -f $(BIN) $(OBJ) $(LIB) abase-box abase-$(VERSION).tar.gz
+
+.gitignore:
+	{ printf '*.o\n' ; printf '/%s\n' $(LIB) $(BIN) ; } > $@
+
+.PHONY: all install uninstall dist abase-box-install abase-box-uninstall clean .gitignore
diff --git a/README b/README
new file mode 100644
index 0000000..f222ea1
--- /dev/null
+++ b/README
@@ -0,0 +1,32 @@
+abase - Aba's tools
+===================
+
+abase is a collection of tools that didn't fit into ubase or sbase.
+
+Currently it contains the following:
+- a very simple more
+
+Note: abase is a shameless copy of sbase/ubase in certain areas like
+the Makefile, libutil, etc. This might also make an integration into
+sbase/ubase easier.
+
+Building
+--------
+
+To build abase, simply type make. You may have to fiddle with config.mk
+depending on your system.
+
+You can also build abase-box, which generates a single binary containing
+all the required tools. You can then symlink the individual tools to
+abase-box or run: make abase-box-install
+
+Ideally you will want to statically link abase. If you are on Linux we
+recommend using musl-libc[1].
+
+Portability
+-----------
+
+Not really tested so far, but you should be able to build it with
+gcc, clang, tcc, nwcc and pcc.
+
+[1] http://www.musl-libc.org/
diff --git a/TODO b/TODO
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/TODO
diff --git a/arg.h b/arg.h
new file mode 100644
index 0000000..aeab52a
--- /dev/null
+++ b/arg.h
@@ -0,0 +1,63 @@
+/*
+ * Copy me if you can.
+ * by 20h
+ */
+
+#ifndef ARG_H__
+#define ARG_H__
+
+extern char *argv0;
+
+/* use main(int argc, char *argv[]) */
+#define ARGBEGIN	for (argv0 = *argv, argv++, argc--;\
+					argv[0] && argv[0][0] == '-'\
+					&& argv[0][1];\
+					argc--, argv++) {\
+				char argc_;\
+				char **argv_;\
+				int brk_;\
+				if (argv[0][1] == '-' && argv[0][2] == '\0') {\
+					argv++;\
+					argc--;\
+					break;\
+				}\
+				for (brk_ = 0, argv[0]++, argv_ = argv;\
+						argv[0][0] && !brk_;\
+						argv[0]++) {\
+					if (argv_ != argv)\
+						break;\
+					argc_ = argv[0][0];\
+					switch (argc_)
+
+/* Handles obsolete -NUM syntax */
+#define ARGNUM				case '0':\
+					case '1':\
+					case '2':\
+					case '3':\
+					case '4':\
+					case '5':\
+					case '6':\
+					case '7':\
+					case '8':\
+					case '9'
+
+#define ARGEND			}\
+			}
+
+#define ARGC()		argc_
+
+#define ARGNUMF(base)	(brk_ = 1, estrtol(argv[0], (base)))
+
+#define EARGF(x)	((argv[0][1] == '\0' && argv[1] == NULL)?\
+				((x), abort(), (char *)0) :\
+				(brk_ = 1, (argv[0][1] != '\0')?\
+					(&argv[0][1]) :\
+					(argc--, argv++, argv[0])))
+
+#define ARGF()		((argv[0][1] == '\0' && argv[1] == NULL)?\
+				(char *)0 :\
+				(brk_ = 1, (argv[0][1] != '\0')?\
+					(&argv[0][1]) :\
+					(argc--, argv++, argv[0])))
+
+#endif
diff --git a/config.mk b/config.mk
new file mode 100644
index 0000000..3299a72
--- /dev/null
+++ b/config.mk
@@ -0,0 +1,16 @@
+# abase version
+VERSION = 0.0
+
+# paths
+PREFIX = /usr/local
+MANPREFIX = $(PREFIX)/share/man
+
+CC = cc
+AR = ar
+RANLIB = ranlib
+
+# for NetBSD add -D_NETBSD_SOURCE
+# -lrt might be needed on some systems
+CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_XOPEN_SOURCE=700 -D_FILE_OFFSET_BITS=64
+CFLAGS   = -std=c99 -Wall -pedantic
+LDFLAGS  = -s
diff --git a/libutil/eprintf.c b/libutil/eprintf.c
new file mode 100644
index 0000000..673523e
--- /dev/null
+++ b/libutil/eprintf.c
@@ -0,0 +1,59 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../util.h"
+
+char *argv0;
+
+static void xvprintf(const char *, va_list);
+
+void
+eprintf(const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	xvprintf(fmt, ap);
+	va_end(ap);
+
+	exit(1);
+}
+
+void
+enprintf(int status, const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	xvprintf(fmt, ap);
+	va_end(ap);
+
+	exit(status);
+}
+
+void
+weprintf(const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	xvprintf(fmt, ap);
+	va_end(ap);
+}
+
+void
+xvprintf(const char *fmt, va_list ap)
+{
+	if (argv0 && strncmp(fmt, "usage", strlen("usage")))
+		fprintf(stderr, "%s: ", argv0);
+
+	vfprintf(stderr, fmt, ap);
+
+	if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
+		fputc(' ', stderr);
+		perror(NULL);
+	}
+}
diff --git a/more.1 b/more.1
new file mode 100644
index 0000000..b48f2f8
--- /dev/null
+++ b/more.1
@@ -0,0 +1,13 @@
+.Dd 2023-04-13
+.Dt MORE 1
+.Os abase
+.Sh NAME
+.Nm more
+.Nd text pager
+.Sh SYNOPSIS
+.Nm
+.Sh DESCRIPTION
+.Nm
+pages text file
+.Ar path
+to stdout, provides navigation key shortcuts.
diff --git a/more.c b/more.c
new file mode 100644
index 0000000..11a3c2d
--- /dev/null
+++ b/more.c
@@ -0,0 +1,22 @@
+/* See LICENSE file for copyright and license details. */
+
+#include "util.h"
+
+static void
+usage(void)
+{
+	eprintf("usage: %s [file ...]\n", argv0);
+}
+
+int
+main(int argc, char *argv[])
+{
+	int ret = 0;
+
+	ARGBEGIN {
+	default:
+		usage();
+	} ARGEND
+		
+	return ret;
+}
diff --git a/util.h b/util.h
new file mode 100644
index 0000000..e582e73
--- /dev/null
+++ b/util.h
@@ -0,0 +1,5 @@
+/* See LICENSE file for copyright and license details. */
+
+#include "arg.h"
+
+void eprintf(const char *, ...);