initial commitHEADnot

4 files changed, 102 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..d5c101f
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+not
+*.o
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..31d0468
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,34 @@
+.POSIX:
+
+# This Makefile was generated by maje
+# See https://src.kaivo.net/dev/maje/ for more information
+# Do not edit this Makefile by hand
+
+CC=c99
+LD=$(CC)
+CFLAGS=-Wall -Wextra -Wpedantic -Werror -g
+LDFLAGS=
+LDLIBS=
+SRCDIR=.
+OBJDIR=.
+BINDIR=$(OBJDIR)
+LIBDIR=$(OBJDIR)
+DESTDIR=/usr/local
+
+all: $(BINDIR)/not
+
+clean:
+	rm -f $(BINDIR)/not $(OBJDIR)/*.o
+
+install: $(BINDIR)/not
+	mkdir -p $(DESTDIR)/bin
+	cp $(BINDIR)/not $(DESTDIR)/bin
+
+$(BINDIR)/not: $(OBJDIR)/not.o
+$(OBJDIR)/not.o: $(SRCDIR)/not.c
+	@mkdir -p $(@D)
+	$(CC) $(CFLAGS) -o $@ -c $(SRCDIR)/not.c
+
+$(BINDIR)/not:
+	@mkdir -p $(@D)
+	$(LD) $(LDFLAGS) -o $@ $(OBJDIR)/*.o $(LDLIBS)
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..4258ca5
--- /dev/null
+++ b/README.md
@@ -0,0 +1,18 @@
+This program inverts wildcards for use in shell commands. For example, if you
+want a list of all files in the current directory that do *not* end in `.o`,
+run:
+
+    ls $(not '*.o')
+
+Note two things: You'll need to wrap `not` in the `$(...)` syntax to get
+command substitution; and, you should wrap your glob(s) in single quotes to
+prevent them from being expanded by the shell. You can specify more than one
+glob; not will ignore files matching any of the provided globs.
+
+To build, just run:
+
+    make
+
+To install, with privileges run:
+
+    make install
diff --git a/not.c b/not.c
new file mode 100644
index 0000000..5d1170f
--- /dev/null
+++ b/not.c
@@ -0,0 +1,48 @@
+#define _POSIX_C_SOURCE 2
+#include <dirent.h>
+#include <fnmatch.h>
+#include <locale.h>
+#include <stdio.h>
+#include <unistd.h>
+
+static int matches(char *fn, int argc, char *argv[])
+{
+	for (int i = 0; i < argc; i++) {
+		if (fnmatch(argv[i], fn, 0) == 0) {
+			return 1;
+		}
+	}
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	setlocale(LC_ALL, "");
+	int c;
+	while ((c = getopt(argc, argv, "")) != -1) {
+		switch (c) {
+		default:
+			return 1;
+		}
+	}
+
+	if (argc <= optind) {
+		fprintf(stderr, "not: missing operands\n");
+		return 1;
+	}
+
+	DIR *d = opendir(".");
+	if (d == NULL) {
+		perror("not");
+		return 1;
+	}
+
+	struct dirent *de;
+	while ((de = readdir(d)) != NULL) {
+		if (!matches(de->d_name, argc - optind, argv + optind)) {
+			printf("%s\n", de->d_name);
+		}
+	}
+
+	return 0;
+}