simplify inclusion of system header files.

This is a mechanical clean-up of the way *.c files include
system header files.

 (1) sources under compat/, platform sha-1 implementations, and
     xdelta code are exempt from the following rules;

 (2) the first #include must be "git-compat-util.h" or one of
     our own header file that includes it first (e.g. config.h,
     builtin.h, pkt-line.h);

 (3) system headers that are included in "git-compat-util.h"
     need not be included in individual C source files.

 (4) "git-compat-util.h" does not have to include subsystem
     specific header files (e.g. expat.h).

Signed-off-by: Junio C Hamano <[email protected]>

archive-tar.c

@@ -1,7 +1,6 @@
 /*
  * Copyright (c) 2005, 2006 Rene Scharfe
  */
-#include <time.h>
 #include "cache.h"
 #include "commit.h"
 #include "strbuf.h"

archive-zip.c

@@ -1,7 +1,6 @@
 /*
  * Copyright (c) 2006 Rene Scharfe
  */
-#include <time.h>
 #include "cache.h"
 #include "commit.h"
 #include "blob.h"

blob.c

@@ -1,6 +1,5 @@
 #include "cache.h"
 #include "blob.h"
-#include <stdlib.h>
 
 const char *blob_type = "blob";
 

builtin-add.c

@@ -3,8 +3,6 @@
  *
  * Copyright (C) 2006 Linus Torvalds
  */
-#include <fnmatch.h>
-
 #include "cache.h"
 #include "builtin.h"
 #include "dir.h"

builtin-apply.c

@@ -6,7 +6,6 @@
  * This applies patches on top of some (arbitrary) version of the SCM.
  *
  */
-#include <fnmatch.h>
 #include "cache.h"
 #include "cache-tree.h"
 #include "quote.h"

builtin-archive.c

@@ -2,7 +2,6 @@
  * Copyright (c) 2006 Franck Bui-Huu
  * Copyright (c) 2006 Rene Scharfe
  */
-#include <time.h>
 #include "cache.h"
 #include "builtin.h"
 #include "archive.h"

builtin-blame.c

@@ -15,10 +15,6 @@
 #include "revision.h"
 #include "xdiff-interface.h"
 
-#include <time.h>
-#include <sys/time.h>
-#include <regex.h>
-
 static char blame_usage[] =
 "git-blame [-c] [-l] [-t] [-f] [-n] [-p] [-L n,m] [-S <revs-file>] [-M] [-C] [-C] [commit] [--] file\n"
 "  -c, --compatibility Use the same output mode as git-annotate (Default: off)\n"

builtin-branch.c

@@ -5,8 +5,8 @@
  * Based on git-branch.sh by Junio C Hamano.
  */
 
-#include "color.h"
 #include "cache.h"
+#include "color.h"
 #include "refs.h"
 #include "commit.h"
 #include "builtin.h"

builtin-for-each-ref.c

@@ -6,7 +6,6 @@
 #include "tree.h"
 #include "blob.h"
 #include "quote.h"
-#include <fnmatch.h>
 
 /* Quoting styles */
 #define QUOTE_NONE 0

builtin-grep.c

@@ -10,10 +10,7 @@
 #include "tag.h"
 #include "tree-walk.h"
 #include "builtin.h"
-#include <regex.h>
 #include "grep.h"
-#include <fnmatch.h>
-#include <sys/wait.h>
 
 /*
  * git grep pathspecs are somewhat different from diff-tree pathspecs;

builtin-log.c

@@ -11,8 +11,6 @@
 #include "log-tree.h"
 #include "builtin.h"
 #include "tag.h"
-#include <time.h>
-#include <sys/time.h>
 
 static int default_show_root = 1;
 

builtin-ls-files.c

@@ -5,8 +5,6 @@
  *
  * Copyright (C) Linus Torvalds, 2005
  */
-#include <fnmatch.h>
-
 #include "cache.h"
 #include "quote.h"
 #include "dir.h"

builtin-mailinfo.c

@@ -2,15 +2,6 @@
  * Another stupid program, this one parsing the headers of an
  * email to figure out authorship and subject
  */
-#define _GNU_SOURCE
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#ifndef NO_ICONV
-#include <iconv.h>
-#endif
-#include "git-compat-util.h"
 #include "cache.h"
 #include "builtin.h"
 

builtin-mailsplit.c

@@ -4,13 +4,6 @@
  * It just splits a mbox into a list of files: "0001" "0002" ..
  * so you can process them further from there.
  */
-#include <unistd.h>
-#include <stdlib.h>
-#include <fcntl.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <string.h>
-#include <stdio.h>
 #include "cache.h"
 #include "builtin.h"
 

builtin-mv.c

@@ -3,8 +3,6 @@
  *
  * Copyright (C) 2006 Johannes Schindelin
  */
-#include <fnmatch.h>
-
 #include "cache.h"
 #include "builtin.h"
 #include "dir.h"

builtin-name-rev.c

@@ -1,4 +1,3 @@
-#include <stdlib.h>
 #include "builtin.h"
 #include "cache.h"
 #include "commit.h"

builtin-pack-objects.c

@@ -12,8 +12,6 @@
 #include "diff.h"
 #include "revision.h"
 #include "list-objects.h"
-#include <sys/time.h>
-#include <signal.h>
 
 static const char pack_usage[] = "\
 git-pack-objects [{ -q | --progress | --all-progress }] \n\

builtin-repo-config.c

@@ -1,6 +1,5 @@
 #include "builtin.h"
 #include "cache.h"
-#include <regex.h>
 
 static const char git_config_set_usage[] =
 "git-repo-config [ --global ] [ --bool | --int ] [--get | --get-all | --get-regexp | --replace-all | --add | --unset | --unset-all] name [value [value_regex]] | --rename-section old_name new_name | --list";

builtin-runstatus.c

@@ -1,5 +1,5 @@
-#include "wt-status.h"
 #include "cache.h"
+#include "wt-status.h"
 
 extern int wt_status_use_color;
 

builtin-shortlog.c

@@ -4,7 +4,6 @@
 #include "diff.h"
 #include "path-list.h"
 #include "revision.h"
-#include <string.h>
 
 static const char shortlog_usage[] =
 "git-shortlog [-n] [-s] [<commit-id>... ]";

builtin-show-branch.c

@@ -1,5 +1,3 @@
-#include <stdlib.h>
-#include <fnmatch.h>
 #include "cache.h"
 #include "commit.h"
 #include "refs.h"

builtin-stripspace.c

@@ -1,6 +1,3 @@
-#include <stdio.h>
-#include <string.h>
-#include <ctype.h>
 #include "builtin.h"
 
 /*

builtin-tar-tree.c

@@ -1,7 +1,6 @@
 /*
  * Copyright (c) 2005, 2006 Rene Scharfe
  */
-#include <time.h>
 #include "cache.h"
 #include "commit.h"
 #include "tar.h"

builtin-unpack-objects.c

@@ -8,8 +8,6 @@
 #include "tag.h"
 #include "tree.h"
 
-#include <sys/time.h>
-
 static int dry_run, quiet, recover, has_errors;
 static const char unpack_usage[] = "git-unpack-objects [-n] [-q] [-r] < pack-file";
 

builtin-upload-archive.c

@@ -1,9 +1,6 @@
 /*
  * Copyright (c) 2006 Franck Bui-Huu
  */
-#include <time.h>
-#include <sys/wait.h>
-#include <sys/poll.h>
 #include "cache.h"
 #include "builtin.h"
 #include "archive.h"

color.c

@@ -1,8 +1,5 @@
-#include "color.h"
 #include "cache.h"
-#include "git-compat-util.h"
-
-#include <stdarg.h>
+#include "color.h"
 
 #define COLOR_RESET "\033[m"
 

compat/mmap.c

@@ -1,7 +1,3 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
 #include "../git-compat-util.h"
 
 void *gitfakemmap(void *start, size_t length, int prot , int flags, int fd, off_t offset)

compat/setenv.c

@@ -1,5 +1,4 @@
-#include <stdlib.h>
-#include <string.h>
+#include "../git-compat-util.h"
 
 int gitsetenv(const char *name, const char *value, int replace)
 {

compat/strlcpy.c

@@ -1,4 +1,4 @@
-#include <string.h>
+#include "../git-compat-util.h"
 
 size_t gitstrlcpy(char *dest, const char *src, size_t size)
 {

compat/unsetenv.c

@@ -1,5 +1,4 @@
-#include <stdlib.h>
-#include <string.h>
+#include "../git-compat-util.h"
 
 void gitunsetenv (const char *name)
 {

config.c

@@ -6,7 +6,6 @@
  *
  */
 #include "cache.h"
-#include <regex.h>
 
 #define MAXNAME (256)
 

connect.c

@@ -3,12 +3,6 @@
 #include "pkt-line.h"
 #include "quote.h"
 #include "refs.h"
-#include <sys/wait.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <netdb.h>
-#include <signal.h>
 
 static char *server_capabilities;
 

convert-objects.c

@@ -1,7 +1,3 @@
-#define _XOPEN_SOURCE 600 /* glibc2 and AIX 5.3L need 500, OpenBSD needs 600 for S_ISLNK() */
-#define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */
-#define _GNU_SOURCE
-#include <time.h>
 #include "cache.h"
 #include "blob.h"
 #include "commit.h"

daemon.c

@@ -1,20 +1,10 @@
-#include <signal.h>
-#include <sys/wait.h>
-#include <sys/socket.h>
-#include <sys/time.h>
-#include <sys/poll.h>
-#include <netdb.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <syslog.h>
-#include <pwd.h>
-#include <grp.h>
-#include <limits.h>
-#include "pkt-line.h"
 #include "cache.h"
+#include "pkt-line.h"
 #include "exec_cmd.h"
 #include "interpolate.h"
 
+#include <syslog.h>
+
 #ifndef HOST_NAME_MAX
 #define HOST_NAME_MAX 256
 #endif

date.c

@@ -4,9 +4,6 @@
  * Copyright (C) Linus Torvalds, 2005
  */
 
-#include <time.h>
-#include <sys/time.h>
-
 #include "cache.h"
 
 static time_t my_mktime(struct tm *tm)

diff-delta.c

@@ -18,11 +18,8 @@
  *  licensing gets turned into GPLv2 within this project.
  */
 
-#include <stdlib.h>
-#include <string.h>
-#include "delta.h"
-
 #include "git-compat-util.h"
+#include "delta.h"
 
 /* maximum hash entry list for the same hash bucket */
 #define HASH_LIMIT 64

diff.c

@@ -1,9 +1,6 @@
 /*
  * Copyright (C) 2005 Junio C Hamano
  */
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <signal.h>
 #include "cache.h"
 #include "quote.h"
 #include "diff.h"

diffcore-order.c

@@ -4,7 +4,6 @@
 #include "cache.h"
 #include "diff.h"
 #include "diffcore.h"
-#include <fnmatch.h>
 
 static char **order;
 static int order_cnt;

diffcore-pickaxe.c

@@ -5,8 +5,6 @@
 #include "diff.h"
 #include "diffcore.h"
 
-#include <regex.h>
-
 static unsigned int contains(struct diff_filespec *one,
 			     const char *needle, unsigned long len,
 			     regex_t *regexp)

dir.c

@@ -5,9 +5,6 @@
  * Copyright (C) Linus Torvalds, 2005-2006
  *		 Junio Hamano, 2005-2006
  */
-#include <dirent.h>
-#include <fnmatch.h>
-
 #include "cache.h"
 #include "dir.h"
 

entry.c

@@ -1,5 +1,3 @@
-#include <sys/types.h>
-#include <dirent.h>
 #include "cache.h"
 #include "blob.h"
 

fetch-pack.c

@@ -5,7 +5,6 @@
 #include "tag.h"
 #include "exec_cmd.h"
 #include "sideband.h"
-#include <sys/wait.h>
 
 static int keep_pack;
 static int quiet;

fetch.c

@@ -1,6 +1,5 @@
-#include "fetch.h"
-
 #include "cache.h"
+#include "fetch.h"
 #include "commit.h"
 #include "tree.h"
 #include "tree-walk.h"