Wrap rewrite globals in a struct in preparation for adding another set

diff --git a/config.c b/config.c
index 7e5594b65e4e62514fde378f4f3abb1ee3d1cbdb..e87edeab0c6b9579ecbd9bc5a9a11c3522d21ccf 100644 (file)
--- a/config.c
+++ b/config.c
@@ -1172,7 +1172,9 @@ int git_config_set_multivar(const char *key, const char *value,
 static int section_name_match (const char *buf, const char *name)
 {
        int i = 0, j = 0, dot = 0;
-       for (; buf[i] && buf[i] != ']'; i++) {
+       if (buf[i] != '[')
+               return 0;
+       for (i = 1; buf[i] && buf[i] != ']'; i++) {
                if (!dot && isspace(buf[i])) {
                        dot = 1;
                        if (name[j++] != '.')
@@ -1193,7 +1195,17 @@ static int section_name_match (const char *buf, const char *name)
                if (buf[i] != name[j++])
                        break;
        }
-       return (buf[i] == ']' && name[j] == 0);
+       if (buf[i] == ']' && name[j] == 0) {
+               /*
+                * We match, now just find the right length offset by
+                * gobbling up any whitespace after it, as well
+                */
+               i++;
+               for (; buf[i] && isspace(buf[i]); i++)
+                       ; /* do nothing */
+               return i;
+       }
+       return 0;
 }
 
 /* if new_name == NULL, the section is removed instead */
@@ -1223,11 +1235,13 @@ int git_config_rename_section(const char *old_name, const char *new_name)
        while (fgets(buf, sizeof(buf), config_file)) {
                int i;
                int length;
+               char *output = buf;
                for (i = 0; buf[i] && isspace(buf[i]); i++)
                        ; /* do nothing */
                if (buf[i] == '[') {
                        /* it's a section */
-                       if (section_name_match (&buf[i+1], old_name)) {
+                       int offset = section_name_match(&buf[i], old_name);
+                       if (offset > 0) {
                                ret++;
                                if (new_name == NULL) {
                                        remove = 1;
@@ -1238,14 +1252,29 @@ int git_config_rename_section(const char *old_name, const char *new_name)
                                        ret = write_error(lock->filename);
                                        goto out;
                                }
-                               continue;
+                               /*
+                                * We wrote out the new section, with
+                                * a newline, now skip the old
+                                * section's length
+                                */
+                               output += offset + i;
+                               if (strlen(output) > 0) {
+                                       /*
+                                        * More content means there's
+                                        * a declaration to put on the
+                                        * next line; indent with a
+                                        * tab
+                                        */
+                                       output -= 1;
+                                       output[0] = '\t';
+                               }
                        }
                        remove = 0;
                }
                if (remove)
                        continue;
-               length = strlen(buf);
-               if (write_in_full(out_fd, buf, length) != length) {
+               length = strlen(output);
+               if (write_in_full(out_fd, output, length) != length) {
                        ret = write_error(lock->filename);
                        goto out;
                }