apply: tighten constness of line buffer

These point into a single line in the patch text we read from
the input, and they are not used to modify it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/apply.c b/builtin/apply.c
index 3385fdb6a10ecd08dd25489c6a620c846bf7c9c7..9d000691582e65aafbab8d95fcd8b6efce1dce64 100644 (file)
--- a/builtin/apply.c
+++ b/builtin/apply.c
@@ -1088,7 +1088,7 @@ static const char *stop_at_slash(const char *line, int llen)
  * creation or deletion of an empty file.  In any of these cases,
  * both sides are the same name under a/ and b/ respectively.
  */
-static char *git_header_name(char *line, int llen)
+static char *git_header_name(const char *line, int llen)
 {
        const char *name;
        const char *second = NULL;
@@ -1215,7 +1215,7 @@ static char *git_header_name(char *line, int llen)
 }
 
 /* Verify that we recognize the lines following a git header */
-static int parse_git_header(char *line, int len, unsigned int size, struct patch *patch)
+static int parse_git_header(const char *line, int len, unsigned int size, struct patch *patch)
 {
        unsigned long offset;
 
@@ -1331,7 +1331,7 @@ static int parse_range(const char *line, int len, int offset, const char *expect
        return offset + ex;
 }
 
-static void recount_diff(char *line, int size, struct fragment *fragment)
+static void recount_diff(const char *line, int size, struct fragment *fragment)
 {
        int oldlines = 0, newlines = 0, ret = 0;
 
@@ -1385,7 +1385,7 @@ static void recount_diff(char *line, int size, struct fragment *fragment)
  * Parse a unified diff fragment header of the
  * form "@@ -a,b +c,d @@"
  */
-static int parse_fragment_header(char *line, int len, struct fragment *fragment)
+static int parse_fragment_header(const char *line, int len, struct fragment *fragment)
 {
        int offset;
 
@@ -1399,7 +1399,7 @@ static int parse_fragment_header(char *line, int len, struct fragment *fragment)
        return offset;
 }
 
-static int find_header(char *line, unsigned long size, int *hdrsize, struct patch *patch)
+static int find_header(const char *line, unsigned long size, int *hdrsize, struct patch *patch)
 {
        unsigned long offset, len;
 
@@ -1511,7 +1511,7 @@ static void check_whitespace(const char *line, int len, unsigned ws_rule)
  * between a "---" that is part of a patch, and a "---" that starts
  * the next patch is to look at the line counts..
  */
-static int parse_fragment(char *line, unsigned long size,
+static int parse_fragment(const char *line, unsigned long size,
                          struct patch *patch, struct fragment *fragment)
 {
        int added, deleted;
@@ -1607,7 +1607,7 @@ static int parse_fragment(char *line, unsigned long size,
        return offset;
 }
 
-static int parse_single_patch(char *line, unsigned long size, struct patch *patch)
+static int parse_single_patch(const char *line, unsigned long size, struct patch *patch)
 {
        unsigned long offset = 0;
        unsigned long oldlines = 0, newlines = 0, context = 0;