compat: add strlcpy, strlcat, for glibc

Makefile

@@ -5,6 +5,9 @@ VERSION = 0.1
 SRC = \
 	urmoms.c\
 	urmoms-index.c
+COMPATSRC = \
+	strlcat.c\
+	strlcpy.c
 BIN = \
 	urmoms\
 	urmoms-index
@@ -15,9 +18,9 @@ DOC = \
 	LICENSE\
 	README\
 	TODO
-HDR = 
+HDR = compat.h
 
-OBJ = ${SRC:.c=.o}
+OBJ = ${SRC:.c=.o} ${EXTRAOBJ}
 
 all: $(BIN)
 
@@ -42,10 +45,10 @@ config.h:
 	@echo creating $@ from config.def.h
 	@cp config.def.h $@
 
-urmoms: urmoms.o
+urmoms: urmoms.o ${EXTRAOBJ}
 	${CC} -o $@ urmoms.o ${LDFLAGS}
 
-urmoms-index: urmoms-index.o
+urmoms-index: urmoms-index.o ${EXTRAOBJ}
 	${CC} -o $@ urmoms-index.o ${LDFLAGS}
 
 clean:

config.mk

@@ -26,5 +26,10 @@ LDFLAGS = ${LIBS}
 #	-D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=700 -D_BSD_SOURCE ${INCS}
 #LDFLAGS = -static -s ${LIBS}
 
+# uncomment for compat
+CFLAGS += -DCOMPAT
+# uncomment if your libc doesn't support strlcat, strlcpy.
+EXTRAOBJ = strlcat.o strlcpy.o
+
 # compiler and linker
 #CC = cc

strlcat.c

@@ -0,0 +1,55 @@
+/*	$OpenBSD: strlcat.c,v 1.15 2015/03/02 21:41:08 millert Exp $	*/
+
+/*
+ * Copyright (c) 1998, 2015 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <string.h>
+
+/*
+ * Appends src to string dst of size dsize (unlike strncat, dsize is the
+ * full size of dst, not space left).  At most dsize-1 characters
+ * will be copied.  Always NUL terminates (unless dsize <= strlen(dst)).
+ * Returns strlen(src) + MIN(dsize, strlen(initial dst)).
+ * If retval >= dsize, truncation occurred.
+ */
+size_t
+strlcat(char *dst, const char *src, size_t dsize)
+{
+	const char *odst = dst;
+	const char *osrc = src;
+	size_t n = dsize;
+	size_t dlen;
+
+	/* Find the end of dst and adjust bytes left but don't go past end. */
+	while (n-- != 0 && *dst != '\0')
+		dst++;
+	dlen = dst - odst;
+	n = dsize - dlen;
+
+	if (n-- == 0)
+		return(dlen + strlen(src));
+	while (*src != '\0') {
+		if (n != 0) {
+			*dst++ = *src;
+			n--;
+		}
+		src++;
+	}
+	*dst = '\0';
+
+	return(dlen + (src - osrc));	/* count does not include NUL */
+}

strlcpy.c

@@ -0,0 +1,50 @@
+/*	$OpenBSD: strlcpy.c,v 1.12 2015/01/15 03:54:12 millert Exp $	*/
+
+/*
+ * Copyright (c) 1998, 2015 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <string.h>
+
+/*
+ * Copy string src to buffer dst of size dsize.  At most dsize-1
+ * chars will be copied.  Always NUL terminates (unless dsize == 0).
+ * Returns strlen(src); if retval >= dsize, truncation occurred.
+ */
+size_t
+strlcpy(char *dst, const char *src, size_t dsize)
+{
+	const char *osrc = src;
+	size_t nleft = dsize;
+
+	/* Copy as many bytes as will fit. */
+	if (nleft != 0) {
+		while (--nleft != 0) {
+			if ((*dst++ = *src++) == '\0')
+				break;
+		}
+	}
+
+	/* Not enough room in dst, add NUL and traverse rest of src. */
+	if (nleft == 0) {
+		if (dsize != 0)
+			*dst = '\0';		/* NUL-terminate dst */
+		while (*src++)
+			;
+	}
+
+	return(src - osrc - 1);	/* count does not include NUL */
+}

urmoms-index.c

@@ -12,6 +12,7 @@
 
 #include <git2.h>
 
+#include "compat.h"
 #include "config.h"
 
 static git_repository *repo;

urmoms.c

@@ -12,6 +12,7 @@
 
 #include <git2.h>
 
+#include "compat.h"
 #include "config.h"
 
 struct commitinfo {