apply --whitespace: configuration option.

The new configuration option apply.whitespace can take one of
"warn", "error", "error-all", or "strip".  When git-apply is run
to apply the patch to the index, they are used as the default
value if there is no command line --whitespace option.

Andrew can now tell people who feed him git trees to update to
this version and say:

	git repo-config apply.whitespace error

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/apply.c b/apply.c
index 8139d83..a5cdd8e 100644 (file)
--- a/apply.c
+++ b/apply.c
@@ -35,16 +35,42 @@ static const char apply_usage[] =
 "git-apply [--stat] [--numstat] [--summary] [--check] [--index] [--apply] [--no-add] [--index-info] [--allow-binary-replacement] [-z] [-pNUM] <patch>...";
 
 static enum whitespace_eol {
-       nowarn,
+       nowarn_whitespace,
        warn_on_whitespace,
        error_on_whitespace,
-       strip_and_apply,
-} new_whitespace = nowarn;
+       strip_whitespace,
+} new_whitespace = nowarn_whitespace;
 static int whitespace_error = 0;
 static int squelch_whitespace_errors = 5;
 static int applied_after_stripping = 0;
 static const char *patch_input_file = NULL;
 
+static void parse_whitespace_option(const char *option)
+{
+       if (!option) {
+               new_whitespace = nowarn_whitespace;
+               return;
+       }
+       if (!strcmp(option, "warn")) {
+               new_whitespace = warn_on_whitespace;
+               return;
+       }
+       if (!strcmp(option, "error")) {
+               new_whitespace = error_on_whitespace;
+               return;
+       }
+       if (!strcmp(option, "error-all")) {
+               new_whitespace = error_on_whitespace;
+               squelch_whitespace_errors = 0;
+               return;
+       }
+       if (!strcmp(option, "strip")) {
+               new_whitespace = strip_whitespace;
+               return;
+       }
+       die("unrecognized whitespace option '%s'", option);
+}
+
 /*
  * For "diff-stat" like behaviour, we keep track of the biggest change
  * we've seen, and the longest filename. That allows us to do simple
@@ -832,7 +858,7 @@ static int parse_fragment(char *line, unsigned long size, struct patch *patch, s
                         * That is, an addition of an empty line would check
                         * the '+' here.  Sneaky...
                         */
-                       if ((new_whitespace != nowarn) &&
+                       if ((new_whitespace != nowarn_whitespace) &&
                            isspace(line[len-2])) {
                                whitespace_error++;
                                if (squelch_whitespace_errors &&
@@ -1129,7 +1155,7 @@ static int apply_line(char *output, const char *patch, int plen)
         * patch[plen] is '\n'.
         */
        int add_nl_to_tail = 0;
-       if ((new_whitespace == strip_and_apply) &&
+       if ((new_whitespace == strip_whitespace) &&
            1 < plen && isspace(patch[plen-1])) {
                if (patch[plen] == '\n')
                        add_nl_to_tail = 1;
@@ -1824,10 +1850,21 @@ static int apply_patch(int fd, const char *filename)
        return 0;
 }
 
+static int git_apply_config(const char *var, const char *value)
+{
+       if (!strcmp(var, "apply.whitespace")) {
+               apply_default_whitespace = strdup(value);
+               return 0;
+       }
+       return git_default_config(var, value);
+}
+
+
 int main(int argc, char **argv)
 {
        int i;
        int read_stdin = 1;
+       const char *whitespace_option = NULL;
 
        for (i = 1; i < argc; i++) {
                const char *arg = argv[i];
@@ -1895,30 +1932,17 @@ int main(int argc, char **argv)
                        continue;
                }
                if (!strncmp(arg, "--whitespace=", 13)) {
-                       if (!strcmp(arg+13, "warn")) {
-                               new_whitespace = warn_on_whitespace;
-                               continue;
-                       }
-                       if (!strcmp(arg+13, "error")) {
-                               new_whitespace = error_on_whitespace;
-                               continue;
-                       }
-                       if (!strcmp(arg+13, "error-all")) {
-                               new_whitespace = error_on_whitespace;
-                               squelch_whitespace_errors = 0;
-                               continue;
-                       }
-                       if (!strcmp(arg+13, "strip")) {
-                               new_whitespace = strip_and_apply;
-                               continue;
-                       }
-                       die("unrecognized whitespace option '%s'", arg+13);
+                       whitespace_option = arg + 13;
+                       parse_whitespace_option(arg + 13);
+                       continue;
                }
 
                if (check_index && prefix_length < 0) {
                        prefix = setup_git_directory();
                        prefix_length = prefix ? strlen(prefix) : 0;
-                       git_config(git_default_config);
+                       git_config(git_apply_config);
+                       if (!whitespace_option && apply_default_whitespace)
+                               parse_whitespace_option(apply_default_whitespace);
                }
                if (0 < prefix_length)
                        arg = prefix_filename(prefix, prefix_length, arg);

diff --git a/cache.h b/cache.h
index 58eec00..0d3b244 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -161,11 +161,13 @@ extern int hold_index_file_for_update(struct cache_file *, const char *path);
 extern int commit_index_file(struct cache_file *);
 extern void rollback_index_file(struct cache_file *);
 
+/* Environment bits from configuration mechanism */
 extern int trust_executable_bit;
 extern int assume_unchanged;
 extern int only_use_symrefs;
 extern int diff_rename_limit_default;
 extern int shared_repository;
+extern const char *apply_default_whitespace;
 
 #define GIT_REPO_VERSION 0
 extern int repository_format_version;

diff --git a/environment.c b/environment.c
index 251e53c..16c08f0 100644 (file)
--- a/environment.c
+++ b/environment.c
@@ -17,6 +17,7 @@ int only_use_symrefs = 0;
 int repository_format_version = 0;
 char git_commit_encoding[MAX_ENCODING_LENGTH] = "utf-8";
 int shared_repository = 0;
+const char *apply_default_whitespace = NULL;
 
 static char *git_dir, *git_object_dir, *git_index_file, *git_refs_dir,
        *git_graft_file;