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compat: add a basename() compatibility function

Some systems such as Windows lack libgen.h so provide a
basename() implementation for cross-platform use.

This introduces the NO_LIBGEN_H construct to the Makefile
and autoconf scripts.

Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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1 parent 0620b39 commit e1c068869216c8c231c1585bbfa9fda42b4756f8 @davvid davvid committed with gitster May 31, 2009
Showing with 37 additions and 0 deletions.
  1. +8 −0 Makefile
  2. +15 −0 compat/basename.c
  3. +1 −0 config.mak.in
  4. +6 −0 configure.ac
  5. +7 −0 git-compat-util.h
View
@@ -54,6 +54,8 @@ all::
#
# Define NO_MKSTEMPS if you don't have mkstemps in the C library.
#
+# Define NO_LIBGEN_H if you don't have libgen.h.
+#
# Define NO_SYS_SELECT_H if you don't have sys/select.h.
#
# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
@@ -834,6 +836,7 @@ ifneq (,$(findstring MINGW,$(uname_S)))
NO_PREAD = YesPlease
NO_OPENSSL = YesPlease
NO_CURL = YesPlease
+ NO_LIBGEN_H = YesPlease
NO_SYMLINK_HEAD = YesPlease
NO_IPV6 = YesPlease
NO_SETENV = YesPlease
@@ -899,6 +902,11 @@ ifndef CC_LD_DYNPATH
endif
endif
+ifdef NO_LIBGEN_H
+ COMPAT_CFLAGS += -DNO_LIBGEN_H
+ COMPAT_OBJS += compat/basename.o
+endif
+
ifdef NO_CURL
BASIC_CFLAGS += -DNO_CURL
else
View
@@ -0,0 +1,15 @@
+#include "../git-compat-util.h"
+
+/* Adapted from libiberty's basename.c. */
+char *gitbasename (char *path)
+{
+ const char *base;
+ /* Skip over the disk name in MSDOS pathnames. */
+ if (has_dos_drive_prefix(path))
+ path += 2;
+ for (base = path; *path; path++) {
+ if (is_dir_sep(*path))
+ base = path + 1;
+ }
+ return (char *)base;
+}
View
@@ -30,6 +30,7 @@ NEEDS_SSL_WITH_CRYPTO=@NEEDS_SSL_WITH_CRYPTO@
NO_OPENSSL=@NO_OPENSSL@
NO_CURL=@NO_CURL@
NO_EXPAT=@NO_EXPAT@
+NO_LIBGEN_H=@NO_LIBGEN_H@
NEEDS_LIBICONV=@NEEDS_LIBICONV@
NEEDS_SOCKET=@NEEDS_SOCKET@
NO_SYS_SELECT_H=@NO_SYS_SELECT_H@
View
@@ -627,6 +627,12 @@ AC_SUBST(SNPRINTF_RETURNS_BOGUS)
## (in default C library and libraries checked by AC_CHECK_LIB)
AC_MSG_NOTICE([CHECKS for library functions])
#
+# Define NO_LIBGEN_H if you don't have libgen.h.
+AC_CHECK_HEADER([libgen.h],
+[NO_LIBGEN_H=],
+[NO_LIBGEN_H=YesPlease])
+AC_SUBST(NO_LIBGEN_H)
+#
# Define NO_STRCASESTR if you don't have strcasestr.
GIT_CHECK_FUNC(strcasestr,
[NO_STRCASESTR=],
View
@@ -97,6 +97,13 @@
#include "compat/mingw.h"
#endif /* __MINGW32__ */
+#ifndef NO_LIBGEN_H
+#include <libgen.h>
+#else
+#define basename gitbasename
+extern char *gitbasename(char *);
+#endif
+
#ifndef NO_ICONV
#include <iconv.h>
#endif

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