From ac78e548049f4e86b38368d2c4b4dbb546c64ac6 Mon Sep 17 00:00:00 2001
From: Alex Riesen <raa.lkml@gmail.com>
Date: Thu, 19 Apr 2007 02:05:03 +0200
Subject: Simplify calling of CR/LF conversion routines

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
---
 convert.c | 71 +++++++++++++++++++++++++++++++--------------------------------
 1 file changed, 35 insertions(+), 36 deletions(-)

(limited to 'convert.c')

diff --git a/convert.c b/convert.c
index da64253a16..742b895cfa 100644
--- a/convert.c
+++ b/convert.c
@@ -79,25 +79,24 @@ static int is_binary(unsigned long size, struct text_stat *stats)
 	return 0;
 }
 
-static int crlf_to_git(const char *path, char **bufp, unsigned long *sizep, int action)
+static char *crlf_to_git(const char *path, const char *src, unsigned long *sizep, int action)
 {
-	char *buffer, *nbuf;
+	char *buffer, *dst;
 	unsigned long size, nsize;
 	struct text_stat stats;
 
 	if ((action == CRLF_BINARY) || (action == CRLF_GUESS && !auto_crlf))
-		return 0;
+		return NULL;
 
 	size = *sizep;
 	if (!size)
-		return 0;
-	buffer = *bufp;
+		return NULL;
 
-	gather_stats(buffer, size, &stats);
+	gather_stats(src, size, &stats);
 
 	/* No CR? Nothing to convert, regardless. */
 	if (!stats.cr)
-		return 0;
+		return NULL;
 
 	if (action == CRLF_GUESS) {
 		/*
@@ -106,13 +105,13 @@ static int crlf_to_git(const char *path, char **bufp, unsigned long *sizep, int
 		 * stuff?
 		 */
 		if (stats.cr != stats.crlf)
-			return 0;
+			return NULL;
 
 		/*
 		 * And add some heuristics for binary vs text, of course...
 		 */
 		if (is_binary(size, &stats))
-			return 0;
+			return NULL;
 	}
 
 	/*
@@ -120,10 +119,10 @@ static int crlf_to_git(const char *path, char **bufp, unsigned long *sizep, int
 	 * to let the caller know that we switched buffers on it.
 	 */
 	nsize = size - stats.crlf;
-	nbuf = xmalloc(nsize);
-	*bufp = nbuf;
+	buffer = xmalloc(nsize);
 	*sizep = nsize;
 
+	dst = buffer;
 	if (action == CRLF_GUESS) {
 		/*
 		 * If we guessed, we already know we rejected a file with
@@ -131,54 +130,53 @@ static int crlf_to_git(const char *path, char **bufp, unsigned long *sizep, int
 		 * follow it.
 		 */
 		do {
-			unsigned char c = *buffer++;
+			unsigned char c = *src++;
 			if (c != '\r')
-				*nbuf++ = c;
+				*dst++ = c;
 		} while (--size);
 	} else {
 		do {
-			unsigned char c = *buffer++;
+			unsigned char c = *src++;
 			if (! (c == '\r' && (1 < size && *buffer == '\n')))
-				*nbuf++ = c;
+				*dst++ = c;
 		} while (--size);
 	}
 
-	return 1;
+	return buffer;
 }
 
-static int crlf_to_worktree(const char *path, char **bufp, unsigned long *sizep, int action)
+static char *crlf_to_worktree(const char *path, const char *src, unsigned long *sizep, int action)
 {
-	char *buffer, *nbuf;
+	char *buffer, *dst;
 	unsigned long size, nsize;
 	struct text_stat stats;
 	unsigned char last;
 
 	if ((action == CRLF_BINARY) || (action == CRLF_INPUT) ||
 	    (action == CRLF_GUESS && auto_crlf <= 0))
-		return 0;
+		return NULL;
 
 	size = *sizep;
 	if (!size)
-		return 0;
-	buffer = *bufp;
+		return NULL;
 
-	gather_stats(buffer, size, &stats);
+	gather_stats(src, size, &stats);
 
 	/* No LF? Nothing to convert, regardless. */
 	if (!stats.lf)
-		return 0;
+		return NULL;
 
 	/* Was it already in CRLF format? */
 	if (stats.lf == stats.crlf)
-		return 0;
+		return NULL;
 
 	if (action == CRLF_GUESS) {
 		/* If we have any bare CR characters, we're not going to touch it */
 		if (stats.cr != stats.crlf)
-			return 0;
+			return NULL;
 
 		if (is_binary(size, &stats))
-			return 0;
+			return NULL;
 	}
 
 	/*
@@ -186,19 +184,20 @@ static int crlf_to_worktree(const char *path, char **bufp, unsigned long *sizep,
 	 * to let the caller know that we switched buffers on it.
 	 */
 	nsize = size + stats.lf - stats.crlf;
-	nbuf = xmalloc(nsize);
-	*bufp = nbuf;
+	buffer = xmalloc(nsize);
 	*sizep = nsize;
 	last = 0;
+
+	dst = buffer;
 	do {
-		unsigned char c = *buffer++;
+		unsigned char c = *src++;
 		if (c == '\n' && last != '\r')
-			*nbuf++ = '\r';
-		*nbuf++ = c;
+			*dst++ = '\r';
+		*dst++ = c;
 		last = c;
 	} while (--size);
 
-	return 1;
+	return buffer;
 }
 
 static void setup_crlf_check(struct git_attr_check *check)
@@ -231,12 +230,12 @@ static int git_path_check_crlf(const char *path)
 	return CRLF_GUESS;
 }
 
-int convert_to_git(const char *path, char **bufp, unsigned long *sizep)
+char *convert_to_git(const char *path, const char *src, unsigned long *sizep)
 {
-	return crlf_to_git(path, bufp, sizep, git_path_check_crlf(path));
+	return crlf_to_git(path, src, sizep, git_path_check_crlf(path));
 }
 
-int convert_to_working_tree(const char *path, char **bufp, unsigned long *sizep)
+char *convert_to_working_tree(const char *path, const char *src, unsigned long *sizep)
 {
-	return crlf_to_worktree(path, bufp, sizep, git_path_check_crlf(path));
+	return crlf_to_worktree(path, src, sizep, git_path_check_crlf(path));
 }
-- 
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