From 7499c996156ea99702fe13e203b97ae60d8868ad Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lukas=20Sandstr=C3=B6m?= <lukass@etek.chalmers.se>
Date: Tue, 13 Jun 2006 22:21:53 +0200
Subject: Make git-stripspace a builtin
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Content-Transfer-Encoding: 8bit

Signed-off-by: Lukas Sandström <lukass@etek.chalmers.se>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/Makefile b/Makefile
index 18bd940..2e093af 100644
--- a/Makefile
+++ b/Makefile
@@ -144,7 +144,7 @@ SCRIPTS = $(patsubst %.sh,%,$(SCRIPT_SH)) \
 
 # The ones that do not have to link with lcrypto, lz nor xdiff.
 SIMPLE_PROGRAMS = \
-	git-stripspace$X git-daemon$X
+	git-daemon$X
 
 # ... and all the rest that could be moved out of bindir to gitexecdir
 PROGRAMS = \
@@ -165,7 +165,7 @@ PROGRAMS = \
 
 BUILT_INS = git-log$X git-whatchanged$X git-show$X \
 	git-count-objects$X git-diff$X git-push$X git-mailsplit$X \
-	git-grep$X git-add$X git-rm$X git-rev-list$X \
+	git-grep$X git-add$X git-rm$X git-rev-list$X git-stripspace$X \
 	git-check-ref-format$X git-rev-parse$X git-mailinfo$X \
 	git-init-db$X git-tar-tree$X git-upload-tar$X git-format-patch$X \
 	git-ls-files$X git-ls-tree$X git-get-tar-commit-id$X \
@@ -226,7 +226,7 @@ BUILTIN_OBJS = \
 	builtin-read-tree.o builtin-commit-tree.o builtin-mailinfo.o \
 	builtin-apply.o builtin-show-branch.o builtin-diff-files.o \
 	builtin-diff-index.o builtin-diff-stages.o builtin-diff-tree.o \
-	builtin-cat-file.o builtin-mailsplit.o
+	builtin-cat-file.o builtin-mailsplit.o builtin-stripspace.o
 
 GITLIBS = $(LIB_FILE) $(XDIFF_LIB)
 LIBS = $(GITLIBS) -lz
diff --git a/builtin-stripspace.c b/builtin-stripspace.c
new file mode 100644
index 0000000..2ce1264
--- /dev/null
+++ b/builtin-stripspace.c
@@ -0,0 +1,61 @@
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include "builtin.h"
+
+/*
+ * Remove empty lines from the beginning and end.
+ *
+ * Turn multiple consecutive empty lines into just one
+ * empty line.  Return true if it is an incomplete line.
+ */
+static int cleanup(char *line)
+{
+	int len = strlen(line);
+
+	if (len && line[len-1] == '\n') {
+		if (len == 1)
+			return 0;
+		do {
+			unsigned char c = line[len-2];
+			if (!isspace(c))
+				break;
+			line[len-2] = '\n';
+			len--;
+			line[len] = 0;
+		} while (len > 1);
+		return 0;
+	}
+	return 1;
+}
+
+void stripspace(FILE *in, FILE *out)
+{
+	int empties = -1;
+	int incomplete = 0;
+	char line[1024];
+
+	while (fgets(line, sizeof(line), in)) {
+		incomplete = cleanup(line);
+
+		/* Not just an empty line? */
+		if (line[0] != '\n') {
+			if (empties > 0)
+				fputc('\n', out);
+			empties = 0;
+			fputs(line, out);
+			continue;
+		}
+		if (empties < 0)
+			continue;
+		empties++;
+	}
+	if (incomplete)
+		fputc('\n', out);
+}
+
+int cmd_stripspace(int argc, const char **argv, char **envp)
+{
+	stripspace(stdin, stdout);
+	return 0;
+}
diff --git a/builtin.h b/builtin.h
index 46671e6..e50379d 100644
--- a/builtin.h
+++ b/builtin.h
@@ -56,4 +56,7 @@ extern int split_mbox(const char **mbox, const char *dir, int allow_bare, int nr
 
 extern int cmd_mailinfo(int argc, const char **argv, char **envp);
 extern int mailinfo(FILE *in, FILE *out, int ks, const char *encoding, const char *msg, const char *patch);
+
+extern int cmd_stripspace(int argc, const char **argv, char **envp);
+extern void stripspace(FILE *in, FILE *out);
 #endif
diff --git a/git.c b/git.c
index 89d4cd2..f00a072 100644
--- a/git.c
+++ b/git.c
@@ -181,7 +181,8 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
 		{ "rev-parse", cmd_rev_parse },
 		{ "write-tree", cmd_write_tree },
 		{ "mailsplit", cmd_mailsplit },
-		{ "mailinfo", cmd_mailinfo }
+		{ "mailinfo", cmd_mailinfo },
+		{ "stripspace", cmd_stripspace }
 	};
 	int i;
 
diff --git a/stripspace.c b/stripspace.c
deleted file mode 100644
index 65a6346..0000000
--- a/stripspace.c
+++ /dev/null
@@ -1,55 +0,0 @@
-#include <stdio.h>
-#include <string.h>
-#include <ctype.h>
-
-/*
- * Remove empty lines from the beginning and end.
- *
- * Turn multiple consecutive empty lines into just one
- * empty line.  Return true if it is an incomplete line.
- */
-static int cleanup(char *line)
-{
-	int len = strlen(line);
-
-	if (len && line[len-1] == '\n') {
-		if (len == 1)
-			return 0;
-		do {
-			unsigned char c = line[len-2];
-			if (!isspace(c))
-				break;
-			line[len-2] = '\n';
-			len--;
-			line[len] = 0;
-		} while (len > 1);
-		return 0;
-	}
-	return 1;
-}
-
-int main(int argc, char **argv)
-{
-	int empties = -1;
-	int incomplete = 0;
-	char line[1024];
-
-	while (fgets(line, sizeof(line), stdin)) {
-		incomplete = cleanup(line);
-
-		/* Not just an empty line? */
-		if (line[0] != '\n') {
-			if (empties > 0)
-				putchar('\n');
-			empties = 0;
-			fputs(line, stdout);
-			continue;
-		}
-		if (empties < 0)
-			continue;
-		empties++;
-	}
-	if (incomplete)
-		putchar('\n');
-	return 0;
-}
-- 
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